CN203967728U - Demagnetization connection is jumped Generator Outlet Switchgear loop field loss protection system - Google Patents
Demagnetization connection is jumped Generator Outlet Switchgear loop field loss protection system Download PDFInfo
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- CN203967728U CN203967728U CN201420261304.9U CN201420261304U CN203967728U CN 203967728 U CN203967728 U CN 203967728U CN 201420261304 U CN201420261304 U CN 201420261304U CN 203967728 U CN203967728 U CN 203967728U
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- Prior art keywords
- relay
- generator
- loop
- output
- circuit breaker
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- 230000005347 demagnetization Effects 0.000 title claims abstract description 17
- 238000004804 winding Methods 0.000 claims abstract description 41
- 230000001629 suppression Effects 0.000 claims abstract description 26
- 238000009434 installation Methods 0.000 claims abstract description 7
- 230000005389 magnetism Effects 0.000 claims description 7
- 230000008030 elimination Effects 0.000 claims description 4
- 238000003379 elimination reaction Methods 0.000 claims description 4
- 239000000523 sample Substances 0.000 claims description 3
- 230000007257 malfunction Effects 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 description 5
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 4
- 230000005284 excitation Effects 0.000 description 4
- 230000009191 jumping Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229910010271 silicon carbide Inorganic materials 0.000 description 2
- 239000011787 zinc oxide Substances 0.000 description 2
- 238000012512 characterization method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
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- Control Of Eletrric Generators (AREA)
Abstract
The utility model discloses a kind of demagnetization connection and jump Generator Outlet Switchgear loop field loss protection system, the positive pole that comprises rotor winding is connected with one end of the first field suppression switch and one end of the second field suppression switch respectively, wherein, the other end of the second field suppression switch is connected with one end of de-excitation resistance, and the other end of de-excitation resistance is connected with the negative pole of rotor winding; Generator outlet circuit breaker trip loop comprises armature winding, circuit breaker and protection equipment for generator, one end of armature winding is connected with the first end of circuit breaker, the first input end of protection equipment for generator is connected with the second end of circuit breaker, the second input of protection equipment for generator is connected with the other end of armature winding, and the 3rd input of protection equipment for generator is connected with the output of transducer; Installation of sensors is on rotor winding.The utility model can solve conventional field suppression switch connection and jump Generator Outlet Switchgear loop because of the malfunction of disturbing or make and break contact shake causes.
Description
Technical field
The utility model relates to a kind of field loss protection, particularly relates to a kind of demagnetization connection and jumps Generator Outlet Switchgear loop field loss protection system.
Background technology
Generator is in normal course of operation, because equipment or personnel's reason cause the accident of loss of exicitation to happen occasionally.Owing to will absorbing a large amount of reactive powers from electric power system after loss of exicitation, if electric network reactive-load under-reserve will cause power system voltage to decline, to generator itself, also will cause certain influence simultaneously.Once therefore generator loss of excitation, should be as early as possible by itself and system splitting.
For generator loss-of-excitation protection; at present conventional is to judge whether loss of excitation of unit by microcomputer protective relay device; its advantage is that the loss of excitation causing for all reasons can accurately judge, but for guaranteeing its Reliability of Microprocessor, generally all can be through time delay by generator and system splitting.And the loss of excitation causing due to field suppression switch mistake separating brake reason should, as early as possible by generator and system splitting, join jumping Generator Outlet Switchgear loop therefore need to increase eliminating magnetism of generator switch.Gate out switch sub-gate circuit is introduced after generally sampling eliminating magnetism of generator switch normally closed contact being connected with Generator Outlet Switchgear normal opened contact at present conventional eliminating magnetism of generator switch connection jumping gate out switch loop.
Utility model content
The utility model is intended at least solve the technical problem existing in prior art, has proposed to special innovation a kind of demagnetization connection and has jumped Generator Outlet Switchgear loop field loss protection system.
In order to realize above-mentioned purpose of the present utility model, the utility model provides a kind of demagnetization connection to jump Generator Outlet Switchgear loop field loss protection system, it is characterized in that, comprises generator outlet circuit breaker trip loop and magnetism elimination circuit; Described magnetism elimination circuit comprises rotor winding, de-excitation resistance, the first field suppression switch and the second field suppression switch; The positive pole of described rotor winding is connected with one end of the first field suppression switch and one end of the second field suppression switch respectively, and the other end of the second field suppression switch is connected with one end of de-excitation resistance, and the other end of de-excitation resistance is connected with the negative pole of rotor winding; Described generator outlet circuit breaker trip loop comprises armature winding, circuit breaker and protection equipment for generator, one end of described armature winding is connected with the first end of circuit breaker, the first input end of described protection equipment for generator is connected with the second end of circuit breaker, the second input of described protection equipment for generator is connected with the other end of armature winding, and the 3rd input of described protection equipment for generator is connected with the output of transducer; Described installation of sensors is on rotor winding.
In a kind of preferred implementation of the present utility model, described protection equipment for generator comprises relay, and one end of the output loop of described relay is connected with the second end of circuit breaker; The control input end of described relay is connected with described transducer output.
Beneficial effect: when due to field suppression switch malfunction, the first field suppression switch disconnects, the second field suppression switch interlock is closed, de-excitation resistance consumes the energy in magnetic field, and now circuit breaker tripping, can not be by electric power system and generator off-the-line, yet, because de-excitation resistance consumes the energy in magnetic field, the magnetic field intensity that rotor winding produces is zero substantially, the magnitude of voltage of Hall element output can transfer relay conducting to off-state by closed type relay by normal closure state, has reached the effect of generator and electric power system off-the-line.
In a kind of preferred implementation of the present utility model, described protection equipment for generator comprises the first relay and the second relay, one end of the output loop of described the first relay is connected with the second end of circuit breaker, and one end of the output loop of described the second relay is connected with the other end of armature winding; The output of described transducer is connected with the control input end of described the first relay and the control input end of the second relay respectively.
Beneficial effect: when accident occurs, two main lines of generator output are all disconnected, more safe and reliable.
In a kind of preferred implementation of the present utility model, described protection equipment for generator comprises double-pole single-throw (D.P.S.T.) relay, described double-pole single-throw (D.P.S.T.) relay comprises the first output loop and the second output loop, one end of the first output loop of described relay is connected with the second end of circuit breaker, and one end of the second output loop and the other end of armature winding of described relay are connected; The output of described transducer is connected with the control input end of described two-way relay.
Beneficial effect a: relay is controlled generator output main line simultaneously, safe and reliable.
In a kind of preferred implementation of the present utility model, described transducer comprises first sensor and the second transducer, described relay comprises the first relay and the second relay, one end of the output loop of described the first relay is connected with the second end of circuit breaker, and one end of the output loop of described the second relay is connected with the other end of described armature winding; The output of described first sensor is connected with the control input end of the first relay, and the output of described the second transducer is connected with the control input end of the second relay.
Beneficial effect: two main lines are a corresponding relay and transducer separately, can prevent more accurately the malfunction causing due to field suppression switch.
In a kind of preferred implementation of the present utility model, described transducer adopts Hall element.
In a kind of preferred implementation of the present utility model, described Hall element is selected linear hall sensor or switching value Hall element.
In a kind of preferred implementation of the present utility model, described number of probes is no less than 2.
In a kind of preferred implementation of the present utility model, described installation of sensors is in the different position of rotor winding.
In sum, owing to having adopted technique scheme, the beneficial effects of the utility model are: solve conventional field suppression switch connection and jump Generator Outlet Switchgear loop because of the malfunction of disturbing or make and break contact shake causes.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation.
Reference numeral: 1 first field suppression switch, 2 second field suppression switches, 3 de-excitation resistances, 4 rotor windings,
5 armature winding, 6 circuit breakers.
Embodiment
Describe embodiment of the present utility model below in detail, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has the element of identical or similar functions from start to finish.Below by the embodiment being described with reference to the drawings, be exemplary, only for explaining the utility model, and can not be interpreted as restriction of the present utility model.
In description of the present utility model, it will be appreciated that, term " longitudinally ", " laterally ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", orientation or the position relationship of indications such as " outward " are based on orientation shown in the drawings or position relationship, only the utility model and simplified characterization for convenience of description, rather than device or the element of indication or hint indication must have specific orientation, with specific orientation structure and operation, therefore can not be interpreted as restriction of the present utility model.
In description of the present utility model, unless otherwise prescribed and limit, it should be noted that, term " installation ", " being connected ", " connection " should be interpreted broadly, for example, can be mechanical connection or electrical connection, also can be the connection of two element internals, can be to be directly connected, and also can indirectly be connected by intermediary, for the ordinary skill in the art, can understand as the case may be the concrete meaning of above-mentioned term.
As shown in Figure 1, the utility model discloses a kind of demagnetization connection and jump Generator Outlet Switchgear loop field loss protection system, comprise rotor winding 4, de-excitation resistance 3, the first field suppression switch 1, the second demagnetization 2, armature winding 5, circuit breaker 6 and protection equipment for generator; The positive pole of rotor winding 4 is connected with one end of the first field suppression switch 1 and one end of the second field suppression switch 2 respectively, and the other end of the second field suppression switch 2 is connected with one end of de-excitation resistance 3, and the other end of de-excitation resistance 3 is connected with the negative pole of rotor winding 4; One end of armature winding 5 is connected with one end of circuit breaker 6; the first input end of protection equipment for generator is connected with the other end of circuit breaker 6; the second input of protection equipment for generator is connected with the other end of armature winding 5, and the 3rd input of protection equipment for generator is connected with the output of transducer.
In the present embodiment, transducer is selected Hall element, of the present utility model a kind of more preferred embodiment in, Hall element is selected switching value Hall element, Hall element is 2.
In the present embodiment, protection equipment for generator comprises relay, and one end of the output loop of relay is connected with the second end of circuit breaker; The control input end of relay is connected with transducer output.Of the present utility model a kind of more preferred embodiment in, relay is selected the relay of this model of G61L, also can select the relay of the other types of same structure.
In the present embodiment, de-excitation resistance is selected nonlinear resistance, can when shutting down, consume fast the energy in magnetic field, also can select other types de-excitation resistance; Of the present utility model a kind of more preferred embodiment in, nonlinear resistance is selected ZnO(zinc oxide) or SiC(carborundum).
Of the present utility model a kind of preferred embodiment in, protection equipment for generator comprises the first relay and the second relay, one end of the output loop of the first relay is connected with the second end of circuit breaker, and one end of the output loop of the second relay is connected with the other end of armature winding; The output of transducer is connected with the control input end of the first relay and the control input end of the second relay respectively.
Of the present utility model a kind of preferred embodiment in, protection equipment for generator comprises double-pole single-throw (D.P.S.T.) relay, double-pole single-throw (D.P.S.T.) relay comprises the first output loop and the second output loop, one end of the first output loop of relay is connected with the second end of circuit breaker, and one end of the second output loop and the other end of armature winding of relay are connected; The output of transducer is connected with the control input end of two-way relay.
In the present embodiment, relay is selected the relay of this model of GL53WF, also can select the dissimilar relay of same structure.
Of the present utility model a kind of preferred embodiment in, transducer comprises first sensor and the second transducer, relay comprises the first relay and the second relay, one end of the output loop of the first relay is connected with the second end of circuit breaker, and one end of the output loop of the second relay is connected with the other end of armature winding; The output of first sensor is connected with the control input end of the first relay, and the output of the second transducer is connected with the control input end of the second relay.
Of the present utility model a kind of preferred embodiment in, Hall element is selected linear hall sensor.
Of the present utility model a kind of preferred embodiment in, number of probes is no less than 2.In a kind of execution mode being more preferably of the present utility model, installation of sensors is in the different position of rotor winding.
In the description of this specification, the description of reference term " embodiment ", " some embodiment ", " example ", " concrete example " or " some examples " etc. means to be contained at least one embodiment of the present utility model or example in conjunction with specific features, structure, material or the feature of this embodiment or example description.In this manual, the schematic statement of above-mentioned term is not necessarily referred to identical embodiment or example.And the specific features of description, structure, material or feature can be with suitable mode combinations in any one or more embodiment or example.
Although illustrated and described embodiment of the present utility model, those having ordinary skill in the art will appreciate that: in the situation that not departing from principle of the present utility model and aim, can carry out multiple variation, modification, replacement and modification to these embodiment, scope of the present utility model is limited by claim and equivalent thereof.
Claims (9)
1. demagnetization connection is jumped a Generator Outlet Switchgear loop field loss protection system, it is characterized in that, comprises generator outlet circuit breaker trip loop and magnetism elimination circuit;
Described magnetism elimination circuit comprises rotor winding, de-excitation resistance, the first field suppression switch and the second field suppression switch; The positive pole of described rotor winding is connected with one end of the first field suppression switch and one end of the second field suppression switch respectively, and the other end of the second field suppression switch is connected with one end of de-excitation resistance, and the other end of de-excitation resistance is connected with the negative pole of rotor winding;
Described generator outlet circuit breaker trip loop comprises armature winding, circuit breaker and protection equipment for generator, one end of described armature winding is connected with the first end of circuit breaker, the first input end of described protection equipment for generator is connected with the second end of circuit breaker, the second input of described protection equipment for generator is connected with the other end of armature winding, and the 3rd input of described protection equipment for generator is connected with the output of transducer; Described installation of sensors is on rotor winding.
2. according to the demagnetization connection described in claim 1, jump Generator Outlet Switchgear loop field loss protection system, it is characterized in that, described protection equipment for generator comprises relay, and one end of the output loop of described relay is connected with the second end of circuit breaker; The control input end of described relay is connected with described transducer output.
3. according to the demagnetization connection described in claim 1, jump Generator Outlet Switchgear loop field loss protection system, it is characterized in that, described protection equipment for generator comprises the first relay and the second relay, one end of the output loop of described the first relay is connected with the second end of circuit breaker, and one end of the output loop of described the second relay is connected with the other end of armature winding; The output of described transducer is connected with the control input end of described the first relay and the control input end of the second relay respectively.
4. according to the demagnetization connection described in claim 1, jump Generator Outlet Switchgear loop field loss protection system, it is characterized in that, described protection equipment for generator comprises double-pole single-throw (D.P.S.T.) relay, described double-pole single-throw (D.P.S.T.) relay comprises the first output loop and the second output loop, one end of the first output loop of described relay is connected with the second end of circuit breaker, and one end of the second output loop and the other end of armature winding of described relay are connected; The output of described transducer is connected with the control input end of described two-way relay.
5. according to the demagnetization connection described in claim 1, jump Generator Outlet Switchgear loop field loss protection system, it is characterized in that, described transducer comprises first sensor and the second transducer, described relay comprises the first relay and the second relay, one end of the output loop of described the first relay is connected with the second end of circuit breaker, and one end of the output loop of described the second relay is connected with the other end of described armature winding; The output of described first sensor is connected with the control input end of the first relay, and the output of described the second transducer is connected with the control input end of the second relay.
6. according to the demagnetization connection described in claim 1, jump Generator Outlet Switchgear loop field loss protection system, it is characterized in that, described transducer adopts Hall element.
7. according to the demagnetization connection described in claim 6, jump Generator Outlet Switchgear loop field loss protection system, it is characterized in that, described Hall element is selected linear hall sensor or switching value Hall element.
8. according to the demagnetization connection described in claim 1, jump Generator Outlet Switchgear loop field loss protection system, it is characterized in that, described number of probes is no less than 2.
9. according to the demagnetization connection described in claim 8, jump Generator Outlet Switchgear loop field loss protection system, it is characterized in that, described installation of sensors is in the different position of rotor winding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420261304.9U CN203967728U (en) | 2014-05-21 | 2014-05-21 | Demagnetization connection is jumped Generator Outlet Switchgear loop field loss protection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420261304.9U CN203967728U (en) | 2014-05-21 | 2014-05-21 | Demagnetization connection is jumped Generator Outlet Switchgear loop field loss protection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203967728U true CN203967728U (en) | 2014-11-26 |
Family
ID=51928272
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420261304.9U Expired - Fee Related CN203967728U (en) | 2014-05-21 | 2014-05-21 | Demagnetization connection is jumped Generator Outlet Switchgear loop field loss protection system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203967728U (en) |
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2014
- 2014-05-21 CN CN201420261304.9U patent/CN203967728U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141126 |