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WO2022001362A1 - 一种无源触发的电力电子分接开关装置及触头装置 - Google Patents

一种无源触发的电力电子分接开关装置及触头装置 Download PDF

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Publication number
WO2022001362A1
WO2022001362A1 PCT/CN2021/091943 CN2021091943W WO2022001362A1 WO 2022001362 A1 WO2022001362 A1 WO 2022001362A1 CN 2021091943 W CN2021091943 W CN 2021091943W WO 2022001362 A1 WO2022001362 A1 WO 2022001362A1
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WO
WIPO (PCT)
Prior art keywords
contact
thyristor
contacts
static
trigger
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2021/091943
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English (en)
French (fr)
Inventor
袁耀
肖毅
张曦
朱强
何宗明
王帅兵
鲍连伟
杨家辉
黎文浩
赵林杰
李锐海
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shanghai Huaming Power Equipment Co Ltd
CSG Electric Power Research Institute
Original Assignee
Shanghai Huaming Power Equipment Co Ltd
CSG Electric Power Research Institute
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN202010601233.2A external-priority patent/CN111899999B/zh
Priority claimed from CN202110170877.5A external-priority patent/CN113066685B/zh
Application filed by Shanghai Huaming Power Equipment Co Ltd, CSG Electric Power Research Institute filed Critical Shanghai Huaming Power Equipment Co Ltd
Priority to US18/010,228 priority Critical patent/US12198886B2/en
Publication of WO2022001362A1 publication Critical patent/WO2022001362A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/0005—Tap change devices
    • H01H9/0016—Contact arrangements for tap changers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/0005—Tap change devices
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F29/00—Variable transformers or inductances not covered by group H01F21/00
    • H01F29/02—Variable transformers or inductances not covered by group H01F21/00 with tappings on coil or winding; with provision for rearrangement or interconnection of windings
    • H01F29/04—Variable transformers or inductances not covered by group H01F21/00 with tappings on coil or winding; with provision for rearrangement or interconnection of windings having provision for tap-changing without interrupting the load current
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H19/00—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand
    • H01H19/02—Details
    • H01H19/10—Movable parts; Contacts mounted thereon
    • H01H19/12—Contact arrangements for providing make-before-break operation, e.g. for on-load tap-changing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/0005—Tap change devices
    • H01H9/0027—Operating mechanisms

Definitions

  • the invention relates to the technical field of electronic switches, in particular to a passively triggered power electronic tap changer device and a contact device.
  • the on-load voltage regulating switch used in distribution transformers is mainly a hybrid scheme in which a mechanical switch and a thyristor cooperate.
  • the principle of this solution is that the mechanical contacts carry the current during normal operation, and the power electronic devices act only when switching is required to bear the current during the switching process to avoid arcing.
  • the main technical problem of the existing hybrid power electronic tap-changer scheme is how to realize the passive triggering of the power electronic switch. After the passive triggering is realized, no external triggering circuit and device are required. One is to increase the reliability, and the other is to reduce the cost. In the prior art, active triggering is usually used, and an external triggering circuit and device need to be configured to trigger the eventual triggering, and the circuit cost is relatively high.
  • Embodiments of the present invention provide a passively triggered power electronic tap changer device and a contact device, which can realize passive triggering during the switching process of the tap changer, with simple implementation, simple structure and high reliability.
  • an embodiment of the present invention provides a power electronic tap changer device, comprising: a first tap, a second tap, a main contact, a first auxiliary contact, a second auxiliary contact, a first a trigger contact, a second trigger contact, an output terminal, a first thyristor, a second thyristor, a first resistor, a second resistor, a third resistor and a fourth resistor; wherein,
  • the main contact, the first auxiliary contact, the second auxiliary contact, the first triggering contact and the second triggering contact are respectively used for connecting the first tap of the first tap a static contact or the second static contact of the second tap;
  • the main contact is also connected to the output end;
  • the first auxiliary contact is connected to one end of the first thyristor, and the other end of the first thyristor is connected to the output end;
  • the second auxiliary contact is connected to One end of the second thyristor, and the other end of the second thyristor is connected to the output end;
  • the first trigger contact is connected to the first end of the first resistor, the second end of the first resistor is connected to the first end of the second resistor, and the second end of the second resistor is connected to the output;
  • the second trigger contact is connected to the first end of the third resistor, the second end of the third resistor is connected to the first end of the fourth resistor, and the second end of the fourth resistor is connected to the output.
  • the power electronic tap changer device further includes a fifth resistor; wherein,
  • the first end of the fifth resistor is connected to the second thyristor, and the second end of the fifth resistor is connected to the output end.
  • the main contact, the first auxiliary contact, the second auxiliary contact, the first trigger contact and all The second trigger contacts are all connected with the first static contacts.
  • the main contact, the first auxiliary contact, the second auxiliary contact, the first trigger contact and all The second trigger contact switches the connection with the first stationary contact to the connection with the second stationary contact according to a preset switching control strategy.
  • the handover control strategy includes:
  • the main contact is disconnected from the first stationary contact
  • the first trigger contact is disconnected from the first stationary contact
  • the first auxiliary contact disconnects the connection with the first stationary contact and establishes the connection with the second stationary contact
  • the first trigger contact establishes a connection with the second static contact
  • the second trigger contact is disconnected from the first stationary contact
  • the main contact establishes a connection with the second static contact
  • the second auxiliary contact disconnects the connection with the first stationary contact and establishes the connection with the second stationary contact
  • the second trigger contact establishes a connection with the second stationary contact.
  • the first tap and the second tap are adjacent taps.
  • an embodiment of the present invention further provides a distribution transformer, where the distribution transformer includes the power electronic tap changer device described in any of the above embodiments.
  • the power electronic tap changer device and distribution transformer disclosed in the present invention can increase circuit reliability and reduce cost by realizing passive triggering of thyristors during the switching process of the tap changer.
  • Another embodiment of the present invention provides a passively triggered contact device for a power electronic tap-changer, and the contact device is suitable for the power electronic tap-changer described in the above embodiment;
  • the contact device includes: at least two static contacts, a main contact, two thyristor trigger contacts, two thyristor auxiliary contacts and a transmission shaft;
  • all the static contacts are arc-shaped conductive sheets with the same radius, and are distributed on the circumference with the rotating shaft as the center, forming a cylindrical structure around the rotating shaft;
  • the main contact, the two thyristor trigger contacts and the two thyristor auxiliary contacts are all connected to the transmission shaft, rotate with the transmission shaft, and are in sliding contact with the static contacts, the two The trajectories over which the triggering contacts of each thyristor rotates are the same, and the trajectories over which the two thyristor auxiliary contacts rotate are the same;
  • Each stationary contact includes: a first part in contact with the main contact, a second part in contact with the two thyristor trigger contacts, and a third part in contact with the two thyristor auxiliary contacts; the The length of the first part is less than the length of the second part, the length of the second part is less than the length of the third part, and the three parts of each static contact are distributed in the middle;
  • the initial position of the main contact is located between the edge line of the first part of the first stationary contact and the center line of the first stationary contact, and the first stationary contact is the at least two stationary contacts
  • the distance between the main contact and the closest first edge line is the first distance
  • the edge of the first part that is parallel to the center line is the first edge line
  • the initial positions of the two thyristor trigger contacts are symmetrically distributed on both sides of the center line of the second part of the first static contact, and one of the thyristor trigger contacts is closest to the second edge
  • the distance of the lines is a second distance, and the edge of the second portion parallel to the center line is the second edge line;
  • the initial positions of the two thyristor auxiliary contacts are symmetrically distributed on both sides of the center line of the third part of the first static contact, and one of the thyristor auxiliary contacts is closest to the third edge line
  • the distance is the third distance
  • the edge of the third part parallel to the center line is the third edge line
  • the first distance is smaller than the second distance, and the second distance is smaller than the third distance.
  • the first part of the first static contact, the second part of the first static contact and the third part of the first static contact are equipotentially connected.
  • the main contact, the two thyristor trigger contacts and the two thyristor auxiliary contacts rotate around the transmission shaft at the same angular velocity;
  • the maximum contact area between the main contact and the static contact is the largest, the maximum contact area between the thyristor auxiliary contact and the static contact is second, and the thyristor triggering contact and The maximum contact area of the static contacts is the smallest.
  • a passively triggered contact device of a power electronic tap changer includes: at least two static contacts, a main contact, two thyristor trigger contacts, two thyristor auxiliary contacts and a transmission shaft, at least two static contacts are distributed on the circumference with the transmission shaft as the center, the main contact, the thyristor triggering contact and the thyristor auxiliary contact are connected with the transmission shaft, with the difference between the transmission shaft and the at least two static contacts Partial contact, the main contact is in contact with the first part of the static contact, the thyristor trigger contact is in contact with the second part of the static contact, and the thyristor auxiliary contact is in contact with the third part of the static contact, by setting the length of the three parts , so that the main contact, the two thyristor trigger contacts and the two thyristor auxiliary contacts respectively contact different parts of different static contacts under the drive of the drive shaft to rotate.
  • the contact device realizes the passively triggered switching of the power electronic tap changer controlled
  • the invention provides a passively triggered power electronic tap changer device and a contact device.
  • the power electronic tap changer device comprises: two taps, a main contact, two auxiliary contacts, and two trigger contacts , output terminal, two thyristors, and four voltage dividing resistors, by controlling the auxiliary contact and the trigger contact, the passive triggering of the power electronic switch can be realized, the circuit reliability is increased and the cost is reduced; the invention provides a passive triggering
  • the contact device of the power electronic tap-changer includes: at least two static contacts, a main contact, two thyristor trigger contacts, two thyristor auxiliary contacts and a transmission shaft, a main contact, a thyristor trigger contact and The thyristor auxiliary contact is fixed on the transmission shaft.
  • the contact device can realize the switching of the power electronic switch to different static contacts by controlling the rotation of the rotating shaft, and maintain the switching sequence of passive triggering, and the control of the switching process is simple. The switching process has high stability and low device cost.
  • FIG. 1 is a schematic structural diagram of a power electronic tap changer device provided by an embodiment of the present invention.
  • FIG. 2 is a circuit diagram of a first power electronic tap changer device provided by an embodiment of the present invention.
  • FIG. 3 is a circuit diagram of a second power electronic tap changer device provided by an embodiment of the present invention.
  • FIG. 4 is a circuit diagram of a third power electronic tap changer device provided by an embodiment of the present invention.
  • FIG. 5 is a circuit diagram of a fourth power electronic tap changer device provided by an embodiment of the present invention.
  • FIG. 6 is a circuit diagram of a fifth power electronic tap changer device provided by an embodiment of the present invention.
  • FIG. 7 is a circuit diagram of a sixth power electronic tap changer device provided by an embodiment of the present invention.
  • FIG. 8 is a circuit diagram of a seventh power electronic tap changer device provided by an embodiment of the present invention.
  • FIG. 9 is a schematic structural diagram of a preferred embodiment of a contact device of a passively triggered power electronic tap-changer provided by the present invention.
  • FIG. 10 is a schematic structural diagram of another preferred embodiment of a contact device of a passively triggered power electronic tap-changer provided by the present invention.
  • FIG. 11 is a schematic structural diagram of the static contacts of several preferred embodiments of the contact device of a passively triggered power electronic tap-changer provided by the present invention.
  • FIG. 12 is a schematic diagram of the initial position of each contact in another preferred embodiment of the contact device of a passively triggered power electronic tap-changer provided by the present invention.
  • FIG. 13 is a switching sequence diagram of another preferred embodiment of the contact device of a passively triggered power electronic tap changer provided by the present invention.
  • FIG. 1 is a schematic structural diagram of a power electronic tap changer device provided by an embodiment of the present invention; the power electronic tap changer device includes: A tap, the second tap, the main contact MC, the first auxiliary contact S1, the second auxiliary contact S3, the first trigger contact S2, the second trigger contact S4, the output terminal O, the first thyristor VS1 , the second thyristor VS2, the first resistor TR1, the second resistor TR2, the third resistor TR3 and the fourth resistor TR4; wherein,
  • the first tap and the second tap are adjacent taps, the main contact MC, the first auxiliary contact S1, the second auxiliary contact S3, the first trigger contact
  • the head S2 and the second trigger contact S4 are respectively used to connect the first static contact A of the first tap or the second static contact B of the second tap;
  • the main contact MC is also connected to the output end O;
  • the first auxiliary contact S1 is connected to one end of the first thyristor VS1, and the other end of the first thyristor VS1 is connected to the output end O;
  • the The second auxiliary contact S3 is connected to one end of the second thyristor VS2, and the other end of the second thyristor VS2 is connected to the output end O;
  • the first trigger contact S2 is connected to the first end of the first resistor TR1, the second end of the first resistor TR1 is connected to the first end of the second resistor TR2, and the second end of the second resistor TR2 is connected.
  • the two ends are connected to the output terminal O;
  • the second trigger contact S4 is connected to the first end of the third resistor TR3, the second end of the third resistor TR3 is connected to the first end of the fourth resistor TR4, and the first end of the fourth resistor TR4 is connected.
  • the two terminals are connected to the output terminal O.
  • the power electronic tap changer device further includes a fifth resistor TR5; wherein the first end of the fifth resistor TR5 is connected to the second thyristor VS2, and the second end of the fifth resistor TR5 is connected to the second thyristor VS2. the output terminal O.
  • the first resistor TR1, the second resistor TR2, the third resistor TR3 and the fourth resistor TR4 are trigger resistors, and the fifth resistor TR5 is a transition resistor.
  • the main contact MC is in contact with the first static contact A to realize current-carrying; S1, S2, S3, and S4 communicate with the first static contact through mechanical switches. Static contact A is connected.
  • A, MC and O are equipotential, both ends of the thyristor VS1 and VS2 are short-circuited, and there is no trigger current, so the thyristor of VS1 and VS2 will not be turned on.
  • the controller controls the main contact MC to leave the first stationary contact A before S1, S2, S3, and S4.
  • the contacts S1, S2, S3, and S4 are still connected to the first static contact A, there will be a potential difference between the two ends of the thyristor VS1 and VS2, and the potential difference is the voltage of the tap of the distribution transformer. Voltage.
  • the potential difference then generates a voltage drop across the thyristors VS1 and VS2, and at the same time, the trigger current can be provided for the thyristors VS1 and VS2 by dividing the voltage by the trigger resistor, thereby realizing the passive conduction of the thyristors VS1 and VS2.
  • the main contact MC when the power electronic tap changer device operates normally, the main contact MC, the first auxiliary contact S1, the second auxiliary contact S3, the first trigger Both the contact S2 and the second triggering contact S4 are connected to the first stationary contact A.
  • the main contact MC, the first auxiliary contact S1, the second auxiliary contact S3, the first trigger contact S2 and the The second triggering contact S4 switches the connection with the first stationary contact A to the connection with the second stationary contact B according to a preset switching control strategy.
  • the handover control strategy includes S101 to S108:
  • the first auxiliary contact S1 disconnects the connection with the first stationary contact A, and establishes the connection with the second stationary contact B;
  • the first trigger contact S2 establishes a connection with the second static contact B;
  • the main contact MC establishes a connection with the second static contact B;
  • the second auxiliary contact S3 disconnects the connection with the first stationary contact A, and establishes the connection with the second stationary contact B;
  • the second trigger contact S4 establishes a connection with the second stationary contact B.
  • step S101 referring to FIG. 3 , the main contact MC is disconnected from the first static contact A, and the voltage difference between the two ends of the first thyristor VS1 is triggered to be turned on.
  • the load current It flows through the S1-VS1 branch.
  • the second thyristor VS2 will also be turned on, but since the second thyristor VS2 is connected in series with the fifth resistor TR5, the load current will go away from the VS1 branch.
  • step S102 referring to FIG. 4, the first trigger contact S2 is disconnected from the first static contact A, the first thyristor VS1 is disconnected, and the load current passes through S3-VS2 at this time -TR5 branch flows through.
  • step S103 referring to FIG. 5 , the first auxiliary contact S1 disconnects the connection with the first stationary contact A, and establishes the connection with the second stationary contact B.
  • step S104 referring to FIG. 6, the first trigger contact S2 establishes a connection with the second static contact B, at this time the first thyristor VS1 is turned on again, and the load current passes through S3-VS2- The TR5 branch and the S1-VS1 branch pass through. Since VS1 and VS2 are respectively connected to the B and A static contacts, the voltage difference between the two static contacts generates a circulating current in the loop.
  • step S105 referring to FIG. 7, the second trigger contact S4 is disconnected from the first static contact A, at this time the second thyristor VS2 is disconnected, and the load current passes through S1- The VS1 branch passes through.
  • the main contact MC is connected with the second static contact B, the first thyristor VS1 is short-circuited, and the first thyristor VS1 is disconnected , the second auxiliary contact S3 disconnects the connection with the first static contact A, and establishes a connection with the second static contact B, the second triggering contact S4 and the second static contact
  • the B contact is connected, the second thyristor VS2 is short-circuited, the second thyristor VS2 is disconnected, and the load current is finally transferred to the B branch.
  • the main contact MC, the first auxiliary contact S1, the second auxiliary contact S3, the first trigger contact S2 and the second trigger contact S4 are completed with the first
  • the connection of a stationary contact A is switched to the connection with the second stationary contact B.
  • the power electronic tap changer device disclosed in the present invention can increase the circuit reliability and reduce the cost by realizing the passive triggering of the thyristor during the switching process of the tap changer.
  • Another embodiment of the present invention provides a passively triggered contact device for a power electronic tap-changer, and the contact device is suitable for the power electronic tap-changer described in the above embodiment;
  • the contact device includes: at least two static contacts, a main contact, two thyristor trigger contacts, two thyristor auxiliary contacts and a transmission shaft;
  • all the static contacts are arc-shaped conductive sheets with the same radius, and are distributed on the circumference with the rotating shaft as the center, forming a cylindrical structure around the rotating shaft;
  • the main contact, the two thyristor trigger contacts and the two thyristor auxiliary contacts are all connected to the transmission shaft, rotate with the transmission shaft, and are in sliding contact with the static contacts, the two The trajectories of the two thyristor trigger contacts are the same, and the trajectories of the two thyristor auxiliary contacts are the same;
  • the area where the static contact is in contact with the main contact is marked as the first part
  • the area where the static contact is in contact with the two thyristor trigger contacts is marked as the second part
  • the static contact and the two thyristor trigger contacts are marked as the second part.
  • the area contacted by the thyristor auxiliary contact is denoted as the third part
  • the length of the first part is less than the length of the second part
  • the length of the second part is less than the length of the third part
  • the length of each static contact All three parts are distributed in the middle.
  • FIG. 9 it is a schematic structural diagram of a preferred embodiment of a contact device of a passively triggered power electronic tap-changer provided by the present invention.
  • the static contacts are arc-shaped conductive sheets with the same radius, which are respectively static contact A, static contact B, static contact C, static contact D, static contact E and static contact F.
  • the contacts are distributed on the circumference with the transmission shaft as the center and have the same radius;
  • the main contact, the two thyristor trigger contacts and the two thyristor auxiliary contacts are all connected to the transmission shaft, rotate with the transmission shaft, and contact the 6 static contacts respectively through rotation;
  • the given number of static contacts is 6, and in other embodiments, the number of static contacts is set according to actual needs;
  • the contact device of a passively triggered power electronic tap changer provided in this embodiment is suitable for the power electronic tap changer device described in the above embodiment;
  • FIG. 10 it is a schematic structural diagram of another preferred embodiment of a contact device of a passively triggered power electronic tap changer provided by an embodiment of the present invention.
  • the main contact MC, the thyristor triggering contact S2, the thyristor The triggering contact S4, the thyristor auxiliary contact S1 and the thyristor auxiliary contact S3 are connected to the transmission shaft, wherein the thyristor triggering contact S2 and the thyristor triggering contact S4 are fixed at the same height of the transmission shaft, so when rotating around the transmission shaft, the two The trajectories are the same, the thyristor auxiliary contact S1 and the thyristor auxiliary contact S3 are fixed at the same height of the transmission shaft, and the trajectory around the transmission shaft is the same, the main contact MC, the two thyristor trigger contacts S2/S4 and the two thyristor auxiliary contacts The contacts S1/S3 are respectively fixed at different heights of the transmission shaft.
  • the static contact A includes a first part in contact with the main contact area, a second part in contact with the two thyristor trigger contacts, and a third part in contact with the two thyristor auxiliary contacts; the first part of the The length is less than the length of the second part, the length of the second part is less than the length of the third part, the three parts of the static contact A are symmetrically distributed with reference to the center line, and the up and down order of the three parts is random. Static contacts of different structures, but all the three parts of the static contacts are arranged in the same order.
  • the upper and lower order of the first part, the second part and the third part of the static contact corresponds to the position of the main contact, the thyristor triggering contact and the thyristor auxiliary contact.
  • the structure of the static contact provided in this embodiment is that the first part is at the top, the second part is in the middle, and the third part is at the bottom.
  • the structure of the contact device provided by the present invention is explained , but the upper and lower order of the first part, the second part and the third part of the contact head has a variety of different sorting methods, the upper and lower order of the three parts are different, the position of the main contact, the thyristor triggering They are not the same; after the positions of the main contacts, the thyristor trigger contacts and the thyristor auxiliary contacts are determined, all the static contacts should be in the same order and correspond to them, which will not be repeated here.
  • the thicknesses of the first part, the second part and the third part of the static contact are the same, and the distance from the transmission shaft is the same.
  • the main contact and the thyristor trigger contact The length of the head and the thyristor auxiliary contact are equal, but in other embodiments, the thickness of the three parts can be different, and the thickness of the distance from the transmission shaft is also different.
  • it is necessary to control the main contact, the thyristor triggering contact and the thyristor auxiliary contact The length of the head is such that the main contact, the thyristor triggering contact and the thyristor auxiliary contact are respectively in contact with the three parts of the static contact.
  • the widths of the three parts of the static contact are limited, and the widths of the three different parts are not limited.
  • the widths of the three parts can be set according to the actual requirements, and the widths of the three parts can be the same. , or different, and has no impact on the specific implementation of the scheme.
  • FIG. 11 it is a front view of several preferred embodiments of the static contacts of the contact device of a passively triggered power electronic tap-changer provided by the present invention.
  • Figures a, b, and c are respectively Schematic diagrams of the structures of the static contacts of the three preferred embodiments.
  • the second part is in the middle, the first part is on the upper side of the second part, and the third part is on the lower side of the second part; in the static contact structure shown in Figure b, the first part is in the middle, and the third part is on the lower side of the second part.
  • the second part is on the upper side of the first part, and the third part is on the lower side of the first part; for the static contact structure shown in Figure c, the third part is in the middle, the second part is on the upper side of the third part, and the first part is on the third part.
  • the invention provides a passively triggered contact device of a power electronic tap changer, comprising: at least two static contacts, a main contact, two thyristor trigger contacts, two thyristor auxiliary contacts and a transmission shaft, At least two static contacts are distributed on the circumference with the transmission shaft as the center, the main contact, the thyristor triggering contact and the thyristor auxiliary contact are connected with the transmission shaft, and as the transmission shaft contacts different parts of the at least two static contacts , the main contact is in contact with the first part of the static contact, the thyristor trigger contact is in contact with the second part of the static contact, and the thyristor auxiliary contact is in contact with the third part of the static contact.
  • the contact device realizes the passively triggered switching of the power electronic tap changer controlled by the rotation of the transmission shaft, the control of the switching process is simple, the switching process stability is high, and the device cost is lower.
  • the initial position of the main contact is located between the edge line of the first part of the first static contact and the center line of the first static contact, the first static contact
  • the contact is any one of at least two static contacts, the distance between the main contact and the closest first edge line is the first distance, and the edge of the first part parallel to the center line is the first distance.
  • the initial positions of the two thyristor trigger contacts are symmetrically distributed on both sides of the center line of the second part of the first static contact, and one of the thyristor trigger contacts is closest to the second edge
  • the distance of the lines is a second distance, and the edge of the second portion parallel to the center line is the second edge line;
  • the initial positions of the two thyristor auxiliary contacts are symmetrically distributed on both sides of the center line of the third part of the first static contact, and one of the thyristor auxiliary contacts is closest to the third edge line
  • the distance is the third distance
  • the edge of the third part parallel to the center line is the third edge line
  • the first distance is smaller than the second distance, and the second distance is smaller than the third distance.
  • the first part of the first static contact, the second part of the first static contact and the third part of the first static contact are equipotentially connected.
  • the main contact, the two thyristor trigger contacts and the two thyristor auxiliary contacts rotate around the transmission shaft at the same angular velocity
  • the maximum contact area between the main contact and the static contact is the largest, the maximum contact area between the auxiliary thyristor contact and the static contact is second, and the thyristor has a second largest contact area.
  • the maximum contact area between the triggering contact and the static contact is the smallest.
  • FIG. 12 it is a schematic diagram of the initial position of each contact in another preferred embodiment of the contact device of a passively triggered power electronic tap-changer provided by the present invention.
  • the main contact MC is in contact with the first part of the static contact A
  • the thyristor trigger contacts S2 and S4 are in contact with the second part of the static contact A
  • the thyristor trigger contacts S1 and S3 are in contact with the third part of the static contact A
  • the main contact MC needs to carry current for a long time.
  • the thyristor auxiliary contacts S1 and S3 need to carry current independently in turn, while the thyristor trigger contacts S2 and S4 only need to provide a small trigger current, so , in the specific implementation, the contact area between the static contact A and the main contact MC is the largest, the contact area between the static contact A and the thyristor auxiliary contacts S3 and S1 is second, and the static contact A and the thyristor trigger contacts S2 and S4 are in contact the smallest area;
  • Differential setting of current-carrying area according to the current-carrying strength of different contacts can reduce the manufacturing cost on the premise of ensuring the stability and safety of the switching process;
  • the initial position of the main contact MC is located between the edge line of the first part of the static contact A and the center line at the initial position of the main contact, and the distance from the edge line of the first part is L1;
  • the thyristor trigger contacts S2 and S4 are respectively located on both sides of the center line of the second part of the static contact A, and are symmetrical according to the center line, and the distance from the edge line of the second part is L2;
  • the two sides of the center line of the second part of the static contact A are symmetrical according to the center line, and the distance from the edge line of the third part is L3.
  • the main contact, the thyristor trigger contact and the thyristor auxiliary contact are connected through the transmission shaft, and by rotating around the transmission shaft, they have the same angular velocity.
  • the auxiliary contacts all have the same sequence, thus keeping the switching sequence of the tap changer unchanged;
  • each static contact is equipotentially connected, but the potentials of different static contacts are not necessarily the same.
  • the switch switches on different static contact potentials;
  • the contact with different static contacts can meet the requirements of passively triggered power electronic separation.
  • the switching sequence requirements of the switch can meet the requirements of tapping and switching different voltages;
  • the circuit includes: static contact A, static contact B, main contact MC, thyristor VS1, thyristor VS2, thyristor auxiliary contact S3, thyristor auxiliary contact S1, thyristor Trigger contact S2, thyristor trigger contact S4, resistor R, first resistor TR1, second resistor TR2, third resistor TR3 and fourth resistor TR4, static contact A and static contact B are two adjacent static contacts In the initial state, the connection relationship of the tap changer is shown in the figure.
  • the static contact B is suspended, the static contact A is connected to the output terminal O through the main contact MC, and the thyristor auxiliary contact S1 is connected to the first end of the thyristor VS1.
  • the second end of the thyristor VS1 is connected to the output end O through the resistor R
  • the thyristor auxiliary contact S2 is connected to the first end of the thyristor VS2
  • the second end of the thyristor VS2 is connected to the output end O
  • one end of the thyristor trigger contact S2 is connected to the static contact Head A is connected
  • the other end of the thyristor trigger contact S2 is connected to the first end of the first resistor TR1
  • the second end of the first resistor TR1 is connected to the first end of the second resistor TR2 and the trigger end of the thyristor VS1
  • the second The second end of the resistor TR2 is connected to the output end O; one end of the thyristor
  • FIG. 13 it is a switching sequence diagram of another preferred embodiment of the contact device of a passively triggered power electronic tap-changer provided by the present invention.
  • the passively triggered switching of the power electronic tap-changer The timing is:
  • the main contact MC is disconnected from the static contact A, as shown in Figure II;
  • the thyristor triggering contact S2 is disconnected from the static contact A, as shown in Figure III;
  • the thyristor auxiliary contact S1 is disconnected from the static contact A, as shown in Figure IV;
  • the thyristor auxiliary contact S1 is established on the connection of the static contact B, as shown in Figure V;
  • the thyristor triggering contact S2 establishes a connection with the static contact B, as shown in Figure VI;
  • the thyristor triggering contact S4 is disconnected from the static contact A, as shown in Figure VII;
  • the main contact MC is established on the connection of the static contact B, as shown in Figure VIII;
  • the thyristor auxiliary contact S3 is disconnected from the static contact A, as shown in Figure IX;
  • the thyristor auxiliary contact S3 is established on the connection of the static contact B, as shown in Figure X;
  • the thyristor triggering contact S4 is established on the connection of the static contact B, as shown in Figure XI;
  • the tap changer is completely switched from the stationary contact A to the stationary contact B, completing a complete switching process, and then the process of switching from the stationary contact B to the stationary contact C adjacent to the stationary contact B is the same as this.
  • a process is the same, which is not repeated here.
  • An embodiment of the present invention provides a passively triggered contact device for a power electronic tap changer, including: at least two static contacts, a main contact, two thyristor trigger contacts, two thyristor auxiliary contacts and a drive shaft , at least two static contacts are distributed on the circumference with the transmission shaft as the center, the main contact, the thyristor triggering contact and the thyristor auxiliary contact are fixed on the transmission shaft, with the difference between the transmission shaft and the at least two static contacts Partial contact, the main contact is in contact with the first part of the static contact, the thyristor trigger contact is in contact with the second part of the static contact, and the thyristor auxiliary contact is in contact with the third part of the static contact.
  • the setting of part length, as well as the initial position setting and rotation angular velocity setting of the main contact, thyristor auxiliary contact and thyristor trigger contact can make the main contact, two thyristor trigger contacts and two thyristor auxiliary contacts Driven by the drive shaft, it rotates and contacts different parts of different static contacts in a certain order.
  • the contact device can realize the switching of the power electronic switch to different static contacts by controlling the rotation of the rotating shaft, and maintain the prescribed switching sequence, the control of the switching process is simple, the switching process stability is high, and the device cost is lower.
  • the invention provides a passively triggered power electronic tap changer device and a contact device.
  • the power electronic tap changer device comprises: two taps, a main contact, two auxiliary contacts, and two trigger contacts , output terminal, two thyristors, and four voltage dividing resistors, by controlling the auxiliary contact and the trigger contact, the passive triggering of the power electronic switch can be realized, the circuit reliability is increased and the cost is reduced; the invention provides a passive triggering
  • the contact device of the power electronic tap-changer includes: at least two static contacts, a main contact, two thyristor trigger contacts, two thyristor auxiliary contacts and a transmission shaft, a main contact, a thyristor trigger contact and The thyristor auxiliary contact is fixed on the transmission shaft.
  • the contact device can realize the switching of the power electronic switch to different static contacts by controlling the rotation of the rotating shaft, and maintain the switching sequence of passive triggering, and the control of the switching process is simple. The switching process has high stability and low device cost.
  • the device embodiments described above are only schematic, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical unit, that is, it can be located in one place, or it can be distributed over multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution in this embodiment.
  • the connection relationship between the modules indicates that there is a communication connection between them, which may be specifically implemented as one or more communication buses or signal lines. Those of ordinary skill in the art can understand and implement it without creative effort.

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Abstract

本发明公开了一种无源触发的电力电子分接开关装置及触头装置，所述电力电子分接开关装置包括：两个分接头、主触头、两个辅助触头、两个触发触头、输出端、两个晶闸管、四个分压电阻，通过控制辅助触头和触发触头，能实现电力电子开关的无源触发，增加电路可靠性和降低成本；本发明提供一种无源触发的电力电子分接开关的触头装置，包括：至少两个静触头，主触头、两个晶闸管触发触头、两个晶闸管辅助触头和传动轴，主触头、晶闸管触发触头和晶闸管辅助触头固定在传动轴上，所述触头装置能够通过控制转动轴的转动，实现电力电子开关切换到不同的静触头，并保持无源触发的切换时序，切换过程的控制简单，切换过程稳定性高，装置成本低。

Description

一种无源触发的电力电子分接开关装置及触头装置 技术领域
本发明涉及电子开关技术领域，尤其涉及一种无源触发的电力电子分接开关装置及触头装置。
背景技术
目前用于配电变压器的有载调压开关主要为机械开关与晶闸管配合的混合式方案。该方案的原理为正常工作时由机械触头载流，仅在需要切换时由电力电子器件动作，承担切换过程中的电流，避免电弧产生。
但是现有混合式电力电子分接开关方案的主要技术问题在于如何实现电力电子开关的无源触发，实现无源触发后，不需要外部触发电路和装置，一是增加了可靠性，二是减少了成本。现有技术中通常大多采用有源触发，有缘触发需要配置外部触发电路和装置，电路成本较高。
发明内容
本发明实施例提供一种无源触发的电力电子分接开关装置及触头装置，能实现分接开关切换过程中的无源触发，实现方式简单，结构简单，可靠性高。
为实现上述目的，本发明实施例提供了一种电力电子分接开关装置，包括：第一分接头、第二分接头、主触头、第一辅助触头、第二辅助触头、第一触发触头、第二触发触头、输出端、第一晶闸管、第二晶闸管、第一电阻、第二电阻、第三电阻和第四电阻；其中，
所述主触头、所述第一辅助触头、所述第二辅助触头、所述第一触发触头和所述第二触发触头分别用于连接所述第一分接头的第一静触头或所述第二分接头的第二静触头；
所述主触头还连接所述输出端；所述第一辅助触头连接所述第一晶闸管的一端，所述第一晶闸管的另一端连接所述输出端；所述第二辅助触头连接所述第二晶闸管的一端，所述第二晶闸管的另一端连接所述输出端；
所述第一触发触头连接所述第一电阻的第一端，所述第一电阻的第二端连接所述第二电阻的第一端，所述第二电阻的第二端连接所述输出端；
所述第二触发触头连接所述第三电阻的第一端，所述第三电阻的第二端连接所述第四电阻的第一端，所述第四电阻的第二端连接所述输出端。
作为上述方案的改进，所述电力电子分接开关装置还包括第五电阻；其中，
所述第五电阻的第一端连接所述第二晶闸管，所述第五电阻的第二端连接所述输出端。
作为上述方案的改进，当所述电力电子分接开关装置正常运行时，所述主触头、所述第一辅助触头、所述第二辅助触头、所述第一触发触头和所述第二触发触头均与所述第一静触头连接。
作为上述方案的改进，当所述电力电子分接开关装置开始切换时，所述主触头、所述第一辅助触头、所述第二辅助触头、所述第一触发触头和所述第二触发触头按照预设的切换控制策略将与所述第一静触头的连接切换为与所述第二静触头的连接。
作为上述方案的改进，所述切换控制策略包括：
所述主触头断开与所述第一静触头的连接；
所述第一触发触头断开与所述第一静触头的连接；
所述第一辅助触头断开与所述第一静触头的连接，且建立与所述第二静触头连接；
所述第一触发触头建立与所述第二静触头连接；
所述第二触发触头断开与所述第一静触头的连接；
所述主触头建立与所述第二静触头连接；
所述第二辅助触头断开与所述第一静触头的连接，且建立与所述第二静触头连接；
所述第二触发触头建立与所述第二静触头连接。
作为上述方案的改进，所述第一分接头和所述第二分接头为相邻分接头。
为实现上述目的，本发明实施例还提供了一种配电变压器，所述配电变压器包括上述任一实施例所述的电力电子分接开关装置。
与现有技术相比，本发明公开的电力电子分接开关装置和配电变压器，通过在分接开关切换过程中实现晶闸管无源触发，能够增加电路可靠性和降低成本。
本发明另一实施例提供一种无源触发的电力电子分接开关的触头装置，所述触头装置适用于上述实施例所述的电力电子分接开关装置；
所述触头装置包括：至少两个静触头、主触头、两个晶闸管触发触头、两个晶闸管辅助触头和传动轴；
其中，所有静触头均为半径相同的圆弧状导电片，并分布在以所述转动轴为圆心的圆周上，组成绕所述转动轴的筒形结构；
所述主触头、所述两个晶闸管触发触头和所述两个晶闸管辅助触头都连接在所述传动轴上，随所述传动轴转动，并与静触头滑动接触，所述两个晶闸管触发触头转动经过的轨迹相同，所述两个晶闸管辅助触头转动经过的轨迹相同；
每个静触头包括：与所述主触头接触的第一部分、与所述两个晶闸管触发触头接触的第二部分以及与所述两个晶闸管辅助触头接触的第三部分；所述第一部分的长小于所述第二部分的长，所述第二部分的长小于所述第三部分的长，每个静触头的三个部分均据中分布；
所述主触头的初始位置位于第一静触头的第一部分的边缘线与所述第一静触头的中心线之间，所述第一静触头是所述至少两个静触头中的任意一个，所述主触头与距离最近的第一边缘线的距离为第一距离，所述第一部分与所述中心线平行的边缘为所述第一边缘线；
所述两个晶闸管触发触头的初始位置对称分布于所述第一静触头的所述第二部分的所述中心线两侧，其中一个所述晶闸管触发触头与距离最近的第二边缘线的距离为第二距离，所述第二部分与所述中心线平行的边缘为所述第二边缘线；
所述两个晶闸管辅助触头的初始位置对称分布于所述第一静触头的所述第三部分的所述中心线两侧，其中一个所述晶闸管辅助触头与距离最近第三边缘线的距离为第三距离，所述第三部分与所述中心线平行的边缘为所述第三边缘线；
其中，所述第一距离小于所述第二距离，所述第二距离小于所述第三距离。
作为一种优选实施方式，所述第一静触头的第一部分、所述第一静触头的第二部分与所述第一静触头的第三部分等电位连接。
作为一种优选实施方式，所述主触头、所述两个晶闸管触发触头和所述两个晶闸管辅助触头以同一角速度绕传动轴转动；
作为一种优选实施方式，所述主触头与所述静触头的最大接触面积最大，所述晶闸管辅助触头与所述静触头的最大接触面积次之，所述晶闸管触发触头与所述静触头的最大接触面积最小。
本发明实施例提供的一种无源触发的电力电子分接开关的触头装置，包括：至少两个静触头，主触头、两个晶闸管触发触头、两个晶闸管辅助触头和传动轴，至少两个静触头分布在以传动轴为中心的圆周上，主触头、晶闸管触发触头和晶闸管辅助触头与传动轴连接，随着传动轴与至少两个静触头的不同部分接触，主触头与静触头的第一部分接触，晶闸管触发触头与静触头的第二部分接触，晶闸管辅助触头与静触头的第三部分接触，通过设置三个部分的长度，使得在传动轴的带动下旋转，主触头、两个晶闸管触发触头和两个晶闸管辅助触头分别接触不同静触头的不同部分。所述触头装置实现了通过传动轴的转动，控制电力电子分接开关的无源触发的切换，切换过程的控制简单，切换过程稳定性高，装置成本低。
本发明提供一种无源触发的电力电子分接开关装置及触头装置，所述电力电子分接开关装置包括：两个分接头、主触头、两个辅助触头、两个触发触头、输出端、两个晶闸管、四个分压电阻，通过控制辅助触头和触发触头，能实现电力电子开关的无源触发，增加电路可靠性和降低成本；本发明提供一种无源触发的电力电子分接开关的触头装置，包括：至少两个静触头，主触头、两个晶闸管触发触头、两个晶闸管辅助触头和传动轴，主触头、晶闸管触发触头和晶闸管辅助触头固定在传动轴上，所述触头装置能够通过控制转动轴的转动，实现电力电子开关切换到不同的静触头，并保持无源触发的切换时序，切换过程的控制简单，切换过程稳定性高，装置成本低。
附图说明
图1是本发明实施例提供的一种电力电子分接开关装置的结构示意图；
图2是本发明实施例提供的第一种电力电子分接开关装置的电路图；
图3是本发明实施例提供的第二种电力电子分接开关装置的电路图；
图4是本发明实施例提供的第三种电力电子分接开关装置的电路图；
图5是本发明实施例提供的第四种电力电子分接开关装置的电路图；
图6是本发明实施例提供的第五种电力电子分接开关装置的电路图；
图7是本发明实施例提供的第六种电力电子分接开关装置的电路图；
图8是本发明实施例提供的第七种电力电子分接开关装置的电路图；
图9是本发明提供的一种无源触发的电力电子分接开关的触头装置的一种优选实施例的结构示意图；
图10是本发明提供的一种无源触发的电力电子分接开关的触头装置的另一种优选实施例的结构示意图；
图11是本发明提供的一种无源触发的电力电子分接开关的触头装置的几种优选实施例的静触头的结构示意图；
图12是本发明提供的一种无源触发的电力电子分接开关的触头装置的又一优选实施例中各个触头初始位置的的示意图；
图13是本发明提供的一种无源触发的电力电子分接开关的触头装置的又一优选实施例的切换时序图。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
本发明实施例提供一种电力电子分接开关装置，参见图1，图1是本发明实施例提供的一种电力电子分接开关装置的结构示意图；所述电力电子分接开关装置包括：第一分接头、第二分接头、主触头MC、第一辅助触头S1、第二辅助触头S3、第一触发触头S2、第二触发触头S4、输出端O、第一晶闸管VS1、第二晶闸管VS2、第一电阻TR1、第二电阻TR2、第三电阻TR3和第四电阻TR4；其中，
所述第一分接头和所述第二分接头为相邻分接头，所述主触头MC、所述第一辅助触头S1、所述第二辅助触头S3、所述第一触发触头S2和所述第二触发触头S4分别用于连接所述第一分接头的第一静触头A或所述第二分接头的第二静触头B；
所述主触头MC还连接所述输出端O；所述第一辅助触头S1连接所述第一晶闸管VS1的一端，所述第一晶闸管VS1的另一端连接所述输出端O；所述第二辅助触头S3连接所述第二晶闸管VS2的一端，所述第二晶闸管VS2的另一端连接所述输出端O；
所述第一触发触头S2连接所述第一电阻TR1的第一端，所述第一电阻TR1的第二端连接所述第二电阻TR2的第一端，所述第二电阻TR2的第二端连接所述输出端O；
所述第二触发触头S4连接所述第三电阻TR3的第一端，所述第三电阻TR3的第二端连接所述第四电阻TR4的第一端，所述第四电阻TR4的第二端连接所述输出端O。
进一步地，所述电力电子分接开关装置还包括第五电阻TR5；其中，所述第五电阻TR5的第一端连接所述第二晶闸管VS2，所述第五电阻TR5的第二端连接所述输出端O。
可选地，所述第一电阻TR1、所述第二电阻TR2、所述第三电阻TR3和所述第四电阻TR4为触发电阻，所述第五电阻TR5为过渡电阻。
具体地，当所述电力电子分接开关装置正常运行时，所述主触头MC与第一静触头A接触，实现载流；S1、S2、S3、S4通过机械开关与所述第一静触头A连接。分接开关未切换前，由于A、MC与O为等电位，晶闸管VS1、VS2两端被短接，且也没有触发电流，VS1、VS2晶闸管不会导通。分接开关开始切换时，通过控制器控制所述主触头MC先于S1、S2、S3、S4离开所述第一静触头A。此时，由于S1、S2、S3、S4触头仍与所述第一静触头A连接，晶闸管VS1、VS2两端将会有电位差存在，该电位差即为配电变压器该分接头的电压。该电位差进而在晶闸管VS1、VS2两端产生压降，同时通过触发电阻分压可为晶闸管VS1、VS2提供触发电流，从而实现晶闸管VS1、VS2的无源导通。
具体地，参见图2，当所述电力电子分接开关装置正常运行时，所述主触头MC、所述第一辅助触头S1、所述第二辅助触头S3、所述第一触发触头S2和所述第二触发触头S4均与所述第一静触头A连接。
具体地，当所述电力电子分接开关装置开始切换时，所述主触头MC、所述第一辅助触头S1、所述第二辅助触头S3、所述第一触发触头S2和所述第二触发触头S4按照预设的切换控制策略将与所述第一静触头A的连接切换为与所述第二静触头B的连接。
可选地，所述切换控制策略包括S101～S108：
S101、所述主触头MC断开与所述第一静触头A的连接；
S102、所述第一触发触头S2断开与所述第一静触头A的连接；
S103、所述第一辅助触头S1断开与所述第一静触头A的连接，且建立与所述第二静触头B连接；
S104、所述第一触发触头S2建立与所述第二静触头B连接；
S105、所述第二触发触头S4断开与所述第一静触头A的连接；
S106、所述主触头MC建立与所述第二静触头B连接；
S107、所述第二辅助触头S3断开与所述第一静触头A的连接，且建立与所述第二静触头B连接；
S108、所述第二触发触头S4建立与所述第二静触头B连接。
具体地，在步骤S101中，参见图3，所述主触头MC与所述第一静触头A断开连接，所述第一晶闸管VS1两端产生电压差触发导通，此时负荷电流经过S1-VS1支路流过。此时所述第二晶闸管VS2也会导通，但是由于所述第二晶闸管VS2与所述第五电阻TR5串联，负荷电流都会从VS1支路走。
具体地，在步骤S102中，参见图4，所述第一触发触头S2与所述第一静触头A断开连接，所述第一晶闸管VS1断开，此时负荷电流经过S3-VS2-TR5支路流过。
具体地，在步骤S103中，参见图5，所述第一辅助触头S1断开与所述第一静触头A的连接，且建立与所述第二静触头B连接。
具体地，在步骤S104中，参见图6，所述第一触发触头S2建立与第二静触头B的连接，此时所述第一晶闸管VS1再次导通，负荷电流经过S3-VS2-TR5支路、S1-VS1支路通过，由于VS1和VS2分别接在B、A静 触头，两静触头的电压差在回路中产生环流。
具体地，在步骤S105中，参见图7，所述第二触发触头S4断开与所述第一静触头A的连接，此时所述第二晶闸管VS2断开，负荷电流经过S1-VS1支路通过。
具体地，在步骤S106～107中，参见图8，所述主触头MC与所述第二静触头B建立连接，所述第一晶闸管VS1被短接，所述第一晶闸管VS1断开，所述第二辅助触头S3断开与所述第一静触头A的连接，且建立与所述第二静触头B连接，所述第二触发触头S4与第二静触头B触头连接，所述第二晶闸管VS2被短接，所述第二晶闸管VS2断开，负荷电流最终转移到B支路。此时完成将所述主触头MC、所述第一辅助触头S1、所述第二辅助触头S3、所述第一触发触头S2和所述第二触发触头S4与所述第一静触头A的连接切换为与所述第二静触头B的连接。
与现有技术相比，本发明公开的电力电子分接开关装置，通过在分接开关切换过程中实现晶闸管无源触发，能够增加电路可靠性和降低成本。
本发明另一实施例提供一种无源触发的电力电子分接开关的触头装置，所述触头装置适用于上述实施例所述的电力电子分接开关装置；
所述触头装置包括：至少两个静触头、主触头、两个晶闸管触发触头、两个晶闸管辅助触头和传动轴；
其中，所有静触头均为半径相同的圆弧状导电片，并分布在以所述转动轴为圆心的圆周上，组成绕所述转动轴的筒形结构；
所述主触头、所述两个晶闸管触发触头和所述两个晶闸管辅助触头都连接在所述传动轴上，随所述传动轴转动，并与静触头滑动接触，所述两个晶闸管触发触头转动经过的轨迹相同，所述两个晶闸管辅助触头转动经过的轨迹相同；
所述静触头与主触头接触的区域记为第一部分，所述静触头与所述两个晶闸管触发触头接触的区域记为第二部分，所述静触头与所述两个晶闸管辅助触头接触的区域记为第三部分，所述第一部分的长小于所述第二部分的长，所述第二部分的长小于所述第三部分的长，每个静触头的三个部分均据中分布。
在本实施例具体实施时，参见图9，是本发明提供的一种无源触发的电力电子分接开关的触头装置的一种优选实施例的结构示意图，所述触头装置的6个静触头为具有相同的半径为圆弧状导电片，分别为静触头A、静触头B、静触头C、静触头D、静触头E和静触头F，6个静触头分布在以传动轴为圆心的圆周上，具有相同的半径；
主触头、两个晶闸管触发触头和两个晶闸管辅助触头均连接在传动轴上，随传动轴转动，通过转动分别与6个静触头接触；
需要说明的是，在本实施例中，给出的静触头数量是6个，在其他实施例中静触头的数量根据实际需要设置；
当所述静触头的数量为两个时，本实施例提供的一种无源触发的电力电子分接开关的触头装置适用于上述实施例所述的电力电子分接开关装置；
参见图10所示，是本发明实施例提供的一种无源触发的电力电子分接开关的触头装置的另一优选实施例的结构示意图，主触头MC、晶闸管触发触头S2、晶闸管触发触头S4、晶闸管辅助触头S1和晶闸管辅助触头S3与传动轴连接，其中，晶闸管触发触头S2与晶闸管触发触头S4固定在传动轴的同一高度，因此绕传动轴转动时，两者轨迹相同，晶闸管辅助触头S1与晶闸管辅助触头S3固定在传动轴的同一高度，绕传动轴转动的轨迹相同，主触头MC、两个晶闸管触发触头S2/S4以及两个晶闸管辅助触头S1/S3分别固定在传动轴的不同高度，绕传动轴转动时，与静触头A接触形成三条不同的轨迹；
静触头A包括与主触头接触区域的第一部分、与所述两个晶闸管触发触头接触的第二部分以及与所述两个晶闸管辅助触头接触的第三部分；所述第一部分的长小于所述第二部分的长，所述第二部分的长小于所述第三部分的长，静触头A的三个部分均参照中心线对称分布，三个部分的上下顺序随机，组成不同结构的静触头，但所有的静触头的三个部分的排列顺序相同。
静触头的第一部分、第二部分与第三部分的上下顺序与主触头、晶闸管触发触头和晶闸管辅助触头的位置对应。
需要说明的是，本实施例给出的静触头的结构是第一部分在最上面，第二部分在中间，第三部分在最下面的排列顺序的结构说明本发明提供的触头装置的结构，但是接触头的第一部分、第二部分和第三部分的上下顺序有多种不同的排序方式，三个部分的上下顺序不同，主触头、晶闸管触发触头和晶闸管辅助触头的位置也不相同；主触头、晶闸管触发触头和晶闸管辅助触头的位置确定后，所有的静触头的排序应一致并与之对应，在此不作赘述。
需要说明的是，在本发明实施例中，给出的静触头的第一部分、第二部分和第三部分的厚度相同，并且距离传动轴的距离相同，此时主触头、晶闸管触发触头和晶闸管辅助触头的长度相等，但在其他实施例中，三个部分的厚度可不相同，距离传动轴的厚度也不相同，此时需要控制主触头、晶闸管触发触头和晶闸管辅助触头的长度，使得主触头、晶闸管触发触头和晶闸管辅助触头分别与静触头的三个部分接触，其实现原理与本实施 例一致，在此不作赘述。
需要说明的是，在本实施例中，只对静触头的三个部分的长度进行限定，没有限定三个不同部分宽度，在具体实施时，按照实际需求设置，三个部分的宽度可相同，也可不同，对方案的具体实施无影响。
参见图11所示，是本发明提供的一种无源触发的电力电子分接开关的触头装置的静触头的几种优选实施例的正视图，图a，图b，图c分别为三种优选实施例的静触头的结构示意图。图a的静触头结构，第二部分在中间，第一部分在第二部分上侧，第三部分在第二部分的下侧；图b所示的静触头结构，第一部分在中间，第二部分在第一部分的上侧，第三部分在第一部分的下侧；图c所示的静触头结构，第三部分在中间，第二部分在第三部分的上侧，第一部分在第三部分下侧；当静触头三个部分的排列顺序不同时，主触头、晶闸管触发触头和晶闸管辅助触头的位置分别与静触头的第一部分、第二部分和第三部分对应。
需要说明的是，在本实施例中只给出了三种静触头的结构示意图，在其他实施例中，静触头还有其他结构，与本实施例原理一致的都在本实施例保护范围内，在此不作赘述。
本发明提供的一种无源触发的电力电子分接开关的触头装置，包括：至少两个静触头，主触头、两个晶闸管触发触头、两个晶闸管辅助触头和传动轴，至少两个静触头分布在以传动轴为中心的圆周上，主触头、晶闸管触发触头和晶闸管辅助触头与传动轴连接，随着传动轴与至少两个静触头的不同部分接触，主触头与静触头的第一部分接触，晶闸管触发触头与静触头的第二部分接触，晶闸管辅助触头与静触头的第三部分接触，通过设置三个部分的长度，使得在传动轴的带动下旋转，主触头、两个晶闸管触发触头和两个晶闸管辅助触头分别接触不同静触头的不同部分。所述触头装置实现了通过传动轴的转动，控制电力电子分接开关的无源触发的切换，切换过程的控制简单，切换过程稳定性高，装置成本更低。
在本发明提供的另一实施例中，所述主触头的初始位置位于第一静触头的第一部分的边缘线与所述第一静触头的中心线之间，所述第一静触头为至少两个静触头中的任意一个，所述主触头与距离最近的第一边缘线的距离为第一距离，所述第一部分与所述中心线平行的边缘为所述第一边缘线；
所述两个晶闸管触发触头的初始位置对称分布于所述第一静触头的所述第二部分的所述中心线两侧，其中一个所述晶闸管触发触头与距离最近的第二边缘线的距离为第二距离，所述第二部分与所述中心线平行的边缘为所述第二边缘线；
所述两个晶闸管辅助触头的初始位置对称分布于所述第一静触头的所述第三部分的所述中心线两侧，其中一个所述晶闸管辅助触头与距离最近第三边缘线的距离为第三距离，所述第三部分与所述中心线平行的边缘为所述第三边缘线；
其中，所述第一距离小于所述第二距离，所述第二距离小于所述第三距离。
在本发明提供的又一实施例中，所述第一静触头的第一部分、所述第一静触头的第二部分与所述第一静触头的第三部分等电位连接。
在本发明提供的又一实施例中，所述主触头、所述两个晶闸管触发触头和所述两个晶闸管辅助触头以同一角速度绕传动轴转动；
在本发明提供的又一实施例中，所述主触头与所述静触头的最大接触面积最大，所述晶闸管辅助触头与所述静触头的最大接触面积次之，所述晶闸管触发触头与所述静触头的最大接触面积最小。
在具体实施时，参见图12所示，是本发明提供的一种无源触发的电力电子分接开关的触头装置的又一优选实施例中各个触头初始位置的的示意图，初始状态时主触头MC与静触头A的第一部分接触，晶闸管触发触头S2、S4与静触头A的第二部分接触，晶闸管触发触头S1、S3与静触头A的第三部分接触，在初始位置时，主触头MC需要长时间载流，切换过程中，晶闸管辅助触头S1、S3需要依次单独载流，而晶闸管触发触头S2、S4只需提供较小的触发电流，因此，在具体实施时，静触头A与主触头MC接触面积最大，静触头A与晶闸管辅助触头S3、S1的接触面积次之，静触头A与晶闸管触发触头S2、S4接触的面积最小；
针对不同触头的载流强度进行差异化载流面积的设置，能够在确保切换过程稳定、安全的前提下，减小制造成本；
在本实施例中，主触头MC的初始位置，在主触头的初始位置位于静触头A的第一部分的边缘线与所述中心线之间，与第一部分边缘线的距离为L1；晶闸管触发触头S2和S4分别处于静触头A的第二部分的中心线两侧，并根据中心线对称，与第二部分边缘线的距离为L2，；晶闸管辅助触头S1和S3分别处于静触头A的第二部分的中心线两侧，并根据中心线对称，与第三部分边缘线的距离为L3，为保证切换过程中，主触头MC先与静触头A断开，其次是晶闸管触发触头S2，晶闸管辅助触头S1最后于静触头A断开；应满足L1<L2<L3；
主触头、晶闸管触发触头和晶闸管辅助触头通过传动轴连接，通过绕传动轴转动，具有相同的角速度，每次与不同的静触头接触时，主触头、晶闸管触发触头和晶闸管辅助触头都具有相同的顺序，从而保持分接开关的切换时序不变；
每个静触头的三个不同部分等电位连接，但是不同的静触头的电位不一定相同，通过主触头、晶闸管触发触头和晶闸管辅助触头接触不同的静触头，能够实现分接开关在不同静触头电位上切换；
通过对分接开关的主触头、晶闸管触发触头和晶闸管辅助触头初始位置的设置，并通过传动轴，以相同的角速度旋转，接触不同的静触头能够满足无源触发的电力电子分接开关的切换时序要求，能够满足分接切换不同电压的要求；
在本发明具体实施时，参见图1所示，电路包括：静触头A、静触头B、主触头MC、晶闸管VS1、晶闸管VS2、晶闸管辅助触头S3、晶闸管辅助触头S1、晶闸管触发触头S2、晶闸管触发触头S4、电阻R、第一电阻TR1、第二电阻TR2、第三电阻TR3与第四电阻TR4，静触头A和静触头B为相邻两个静触头，初始状态时分接开关的连接关系如图所示，静触头B悬空，静触头A通过主触头MC与输出端O连接，晶闸管辅助触头S1与晶闸管VS1的第一端连接，晶闸管VS1的第二端通过电阻R与输出端O连接，晶闸管辅助触头S2与晶闸管VS2的第一端连接，晶闸管VS2的第二端与输出端O连接，晶闸管触发触头S2一端与静触头A连接，晶闸管触发触头S2的另一端与第一电阻TR1的第一端连接，第一电阻TR1的第二端与第二电阻TR2的第一端和晶闸管VS1的触发端连接，第二电阻TR2的第二端与输出端O连接；晶闸管触发触头S4一端与静触头A连接，晶闸管触发触头S4另一端与第三电阻TR3的第一端来连接，第三电阻TR3的第二端与第四电阻TR4的第一端和晶闸管VS1的触发端连接，第四电阻TR4的第二端与输出端O连接；
参见图13所示，是本发明提供的一种无源触发的电力电子分接开关的触头装置的又一优选实施例的切换时序图，所述电力电子分接开关的无源触发的切换时序为：
初始位置时，MC、S1、S2、S3、S4均与触头A连接，如图Ⅰ所示；
主触头MC断开与静触头A的连接，如图Ⅱ所示；
晶闸管触发触头S2断开与静触头A的连接，如图Ⅲ所示；
晶闸管辅助触头S1断开与静触头A的连接，如图Ⅳ所示；
晶闸管辅助触头S1建立于静触头B的连接，如图Ⅴ所示；
晶闸管触发触头S2建立与静触头B的连接，如图Ⅵ所示；
晶闸管触发触头S4断开与静触头A的连接，如图Ⅶ所示；
主触头MC建立于静触头B的连接，如图Ⅷ所示；
晶闸管辅助触头S3断开于静触头A的连接，如图Ⅸ所示；
晶闸管辅助触头S3建立于静触头B的连接，如图Ⅹ所示；
晶闸管触发触头S4建立于静触头B的连接，如图Ⅺ所示；
此时分接开关从静触头A接头完全切换到静触头B上，完成一次完整的切换过程，之后从静触头B切换到于静触头B相邻的静触头C上的过程与这一过程相同，在此不作赘述。
本发明实施例提供一种无源触发的电力电子分接开关的触头装置，包括：至少两个静触头，主触头、两个晶闸管触发触头、两个晶闸管辅助触头和传动轴，至少两个静触头分布在以传动轴为中心的圆周上，主触头、晶闸管触发触头和晶闸管辅助触头固定在传动轴上，随着传动轴与至少两个静触头的不同部分接触，主触头与静触头的第一部分接触，晶闸管触发触头与静触头的第二部分接触，晶闸管辅助触头与静触头的第三部分接触，通过对静触头三个部分长度的设置，以及对主触头、晶闸管辅助触头和晶闸管触发触头的初始位置设定和转动角速度设置，能够使主触头、两个晶闸管触发触头和两个晶闸管辅助触头在传动轴的带动下旋转，按照一定的顺序分别接触不同静触头的不同部分。所述触头装置能够通过控制转动轴的转动，实现电力电子开关切换到不同的静触头，并保持制定的切换时序，切换过程的控制简单，切换过程稳定性高，装置成本更低。
本发明提供一种无源触发的电力电子分接开关装置及触头装置，所述电力电子分接开关装置包括：两个分接头、主触头、两个辅助触头、两个触发触头、输出端、两个晶闸管、四个分压电阻，通过控制辅助触头和触发触头，能实现电力电子开关的无源触发，增加电路可靠性和降低成本；本发明提供一种无源触发的电力电子分接开关的触头装置，包括：至少两个静触头，主触头、两个晶闸管触发触头、两个晶闸管辅助触头和传动轴，主触头、晶闸管触发触头和晶闸管辅助触头固定在传动轴上，所述触头装置能够通过控制转动轴的转动，实现电力电子开关切换到不同的静触头，并保持无源触发的切换时序，切换过程的控制简单，切换过程稳定性高，装置成本低。
需说明的是，以上所描述的装置实施例仅仅是示意性的，其中所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部模块来实现本实施例方案的目的。另外，本发明提供的装置实施例附图中，模块之间的连接关系表示它们之间具有通信连接，具体可以实现为一条或多条通信总线或信号线。本领域普通技术人员在不付出创造性劳动的情况下，即可以理解并实施。
以上所述是本发明的优选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也视为本发明的保护范围。

Claims (10)

  1. 一种电力电子分接开关装置，其特征在于，包括：第一分接头、第二分接头、主触头、第一辅助触头、第二辅助触头、第一触发触头、第二触发触头、输出端、第一晶闸管、第二晶闸管、第一电阻、第二电阻、第三电阻和第四电阻；其中，
    所述主触头、所述第一辅助触头、所述第二辅助触头、所述第一触发触头和所述第二触发触头分别用于连接所述第一分接头的第一静触头或所述第二分接头的第二静触头；
    所述主触头还连接所述输出端；所述第一辅助触头连接所述第一晶闸管的一端，所述第一晶闸管的另一端连接所述输出端；所述第二辅助触头连接所述第二晶闸管的一端，所述第二晶闸管的另一端连接所述输出端；
    所述第一触发触头连接所述第一电阻的第一端，所述第一电阻的第二端连接所述第二电阻的第一端，所述第二电阻的第二端连接所述输出端；
    所述第二触发触头连接所述第三电阻的第一端，所述第三电阻的第二端连接所述第四电阻的第一端，所述第四电阻的第二端连接所述输出端。
  2. 如权利要求1所述的电力电子分接开关装置，其特征在于，所述电力电子分接开关装置还包括第五电阻；其中，
    所述第五电阻的第一端连接所述第二晶闸管，所述第五电阻的第二端连接所述输出端。
  3. 如权利要求1所述的电力电子分接开关装置，其特征在于，当所述电力电子分接开关装置正常运行时，所述主触头、所述第一辅助触头、所述第二辅助触头、所述第一触发触头和所述第二触发触头均与所述第一静触头连接。
  4. 如权利要求3所述的电力电子分接开关装置，其特征在于，当所述电力电子分接开关装置开始切换时，所述主触头、所述第一辅助触头、所述第二辅助触头、所述第一触发触头和所述第二触发触头按照预设的切换控制策略将与所述第一静触头的连接切换为与所述第二静触头的连接。
  5. 如权利要求4所述的电力电子分接开关装置，其特征在于，所述切换控制策略包括：
    所述主触头断开与所述第一静触头的连接；
    所述第一触发触头断开与所述第一静触头的连接；
    所述第一辅助触头断开与所述第一静触头的连接，且建立与所述第二静触头连接；
    所述第一触发触头建立与所述第二静触头连接；
    所述第二触发触头断开与所述第一静触头的连接；
    所述主触头建立与所述第二静触头连接；
    所述第二辅助触头断开与所述第一静触头的连接，且建立与所述第二静触头连接；
    所述第二触发触头建立与所述第二静触头连接。
  6. 如权利要求1所述的电力电子分接开关装置，其特征在于，所述第一分接头和所述第二分接头为相邻分接头。
  7. 一种无源触发的电力电子分接开关的触头装置，其特征在于，所述触头装置适用于权利要求1所述的电力电子分接开关装置；
    所述触头装置包括：至少两个静触头、主触头、两个晶闸管触发触头、两个晶闸管辅助触头和传动轴；
    其中，所有静触头均为半径相同的圆弧状导电片，并分布在以所述转动轴为圆心的圆周上，组成绕所述转动轴的筒形结构；
    所述主触头、所述两个晶闸管触发触头和所述两个晶闸管辅助触头都连接在所述传动轴上，随所述传动轴转动，并与静触头滑动接触，所述两个晶闸管触发触头转动经过的轨迹相同，所述两个晶闸管辅助触头转动经过的轨迹相同；
    每个静触头包括：与所述主触头接触的第一部分、与所述两个晶闸管触发触头接触的第二部分以及与所述两个晶闸管辅助触头接触的第三部分；所述第一部分的长小于所述第二部分的长，所述第二部分的长小于所述第三部分的长，每个静触头的三个部分均据中分布；
    所述主触头的初始位置位于第一静触头的第一部分的边缘线与所述第一静触头的中心线之间，所述第一静触头是所述至少两个静触头中的任意一个，所述主触头与距离最近的第一边缘线的距离为第一距离，所述第一部分与所述中心线平行的边缘为所述第一边缘线；
    所述两个晶闸管触发触头的初始位置对称分布于所述第一静触头的所述第二部分的所述中心线两侧，其中一个所述晶闸管触发触头与距离最近的第二边缘线的距离为第二距离，所述第二部分与所述中心线平行的边缘为所述第二边缘线；
    所述两个晶闸管辅助触头的初始位置对称分布于所述第一静触头的所述第三部分的所述中心线两侧，其中一个所述晶闸管辅助触头与距离最近第三边缘线的距离为第三距离，所述第三部分与所述中心线平行的边缘为所述第三边缘线；
    其中，所述第一距离小于所述第二距离，所述第二距离小于所述第三距离。
  8. 根据权利要求7所述的一种无源触发的电力电子分接开关的触头装置，其特征在于，所述第一静触头的第一部分、所述第一静触头的第二部分与所述第一静触头的第三部分等电位连接。
  9. 根据权利要求7所述的一种无源触发的电力电子分接开关的触头装置，其特征在于，所述主触头、所述两个晶闸管触发触头和所述两个晶闸管辅助触头以同一角速度绕传动轴转动；
  10. 根据权利要求7所述的一种无源触发的电力电子分接开关的触头装置，其特征在于，所述主触头与所述第一静触头的最大接触面积最大，所述晶闸管辅助触头与所述第一静触头的最大接触面积次之，所述晶闸管触发触头与所述第一静触头的最大接触面积最小。
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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103189948A (zh) * 2010-11-09 2013-07-03 赖茵豪森机械制造公司 分接开关
CN205069346U (zh) * 2015-11-10 2016-03-02 刁俊起 一种新型变压器有载调压开关
CN111899999A (zh) * 2020-06-29 2020-11-06 南方电网科学研究院有限责任公司 电力电子分接开关装置和配电变压器
CN112151289A (zh) * 2020-09-23 2020-12-29 上海华明电力设备制造有限公司 一种以电力半导体器件进行分接的有载分接开关
CN113035603A (zh) * 2021-02-08 2021-06-25 南方电网科学研究院有限责任公司 一种无源触发的电力电子分接开关的异形触头装置

Family Cites Families (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2044094A5 (zh) * 1969-05-08 1971-02-19 Comp Generale Electricite
US5617091A (en) * 1994-09-02 1997-04-01 Lowe, Price, Leblanc & Becker Resistance ladder, D-A converter, and A-D converter
JP3997584B2 (ja) 1998-01-22 2007-10-24 松下電工株式会社 電子式スイッチ
CN2342452Y (zh) 1998-08-10 1999-10-06 管济洪 干式固体有载分接开关
CN2896468Y (zh) 2006-06-02 2007-05-02 郑州大学 有级带载调压开关
CN201259825Y (zh) * 2008-08-21 2009-06-17 上海华明电力设备制造有限公司 晶闸管电阻过渡切换有载分接开关
CN101430967B (zh) 2008-08-21 2010-12-08 上海华明电力设备制造有限公司 晶闸管电阻过渡切换有载分接开关
DE102010019948B4 (de) * 2010-05-08 2015-06-11 Maschinenfabrik Reinhausen Gmbh Laststufenschalter
CN102208265B (zh) 2011-03-01 2012-11-07 中国农业大学 一种复合切换开关式变压器有载分接开关
CN103019284B (zh) 2012-12-27 2014-08-27 山东大学 一种晶闸管辅助的有载分接开关
CN203119860U (zh) 2013-03-29 2013-08-07 刁俊起 一种新型变压器有载调压开关
CN104283536A (zh) 2013-07-09 2015-01-14 潘小山 一种混合式有载分接开关切换开关
CN105161274A (zh) 2015-09-30 2015-12-16 胡群荣 一种基于晶闸管无弧开关的变压器有载调压方法
CN105206402A (zh) 2015-11-10 2015-12-30 刁俊起 一种新型变压器有载调压开关
CN205751825U (zh) * 2015-11-10 2016-11-30 刁俊起 一种新型变压器有载调压开关
US20200043650A1 (en) * 2016-10-21 2020-02-06 Kabushiki Kaisha Toshiba On-load tap changing apparatus and on-load tap changing system
CN207458782U (zh) 2017-07-21 2018-06-05 上海华明电力设备制造有限公司 一种真空有载分接开关的双隔离开关、双断口真空泡切换电路
CN207381234U (zh) 2017-08-11 2018-05-18 国网江苏省电力公司南京供电公司 一种配电变压器有载调压系统
CN207833270U (zh) 2017-12-21 2018-09-07 意鲁斯电气（北京）有限公司 一种晶闸管自动调压分接开关
CN108768359B (zh) 2018-04-03 2021-06-01 李晓明 一种有载分接开关及其方法
CN210073649U (zh) 2019-08-15 2020-02-14 寻凯 一种基于电力电子切换开关的有载调压分接开关

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103189948A (zh) * 2010-11-09 2013-07-03 赖茵豪森机械制造公司 分接开关
CN205069346U (zh) * 2015-11-10 2016-03-02 刁俊起 一种新型变压器有载调压开关
CN111899999A (zh) * 2020-06-29 2020-11-06 南方电网科学研究院有限责任公司 电力电子分接开关装置和配电变压器
CN112151289A (zh) * 2020-09-23 2020-12-29 上海华明电力设备制造有限公司 一种以电力半导体器件进行分接的有载分接开关
CN113035603A (zh) * 2021-02-08 2021-06-25 南方电网科学研究院有限责任公司 一种无源触发的电力电子分接开关的异形触头装置

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