CN117411166A - Power supply circuit - Google Patents
Power supply circuit Download PDFInfo
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- CN117411166A CN117411166A CN202311168512.4A CN202311168512A CN117411166A CN 117411166 A CN117411166 A CN 117411166A CN 202311168512 A CN202311168512 A CN 202311168512A CN 117411166 A CN117411166 A CN 117411166A
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- Prior art keywords
- power supply
- branch
- standby
- switch
- supply branch
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- 230000002159 abnormal effect Effects 0.000 claims abstract description 18
- 238000010248 power generation Methods 0.000 abstract description 7
- 230000001934 delay Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 8
- 238000005461 lubrication Methods 0.000 description 4
- 239000003921 oil Substances 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
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- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Direct Current Feeding And Distribution (AREA)
Abstract
The present disclosure relates to a power supply circuit including: the voltage protection assembly is connected with the main power supply branch, the standby power supply branch, the delay control branch and the interlocking branch, so that the main power supply branch and the standby power supply branch can be controlled to be in a non-interlocking state through the interlocking branch, the voltage protection assembly outputs a first switching signal to the delay control branch under the condition that the power supply of the main power supply branch is abnormal, the delay control branch delays and controls the standby power supply branch to supply power for the security assembly, the main power supply branch is effectively switched to the standby power supply branch, the power supply circuit is ensured to continuously supply power for the security assembly, the stability and the reliability of the power supply circuit are improved, and the stability of power generation of a power plant is facilitated.
Description
Technical Field
The present disclosure relates to the field of power technology, and in particular, to a power supply circuit.
Background
The safety section of the power generation plant is a circuit which is required to keep running in order to ensure the safety of the power generation plant unit and under the condition that the power generation unit is stopped in an accident or a unit system is stopped, and mainly comprises a thermal control system, a turbine alternating-current lubricating oil pump, a turbine turning oil pump, a generator sealing oil pump and the like. If the security load is shut down, serious problems such as damage to the generator set, failure of a control system and the like can be caused, so that the recovery of the power supply time of the generator set is delayed. The safety power supply in the power plant provides power for the safety section and is an important power supply for guaranteeing the safe operation of the power plant, so that under the condition that the power supply of the power plant is interrupted, the safety standby power supply system is required to be reliably switched, the continuous power supply to the safety section is guaranteed, and the damage of a generator set is prevented.
Disclosure of Invention
In order to achieve the above object, the present disclosure provides a power supply circuit including: the voltage protection assembly, the security assembly, the main power supply branch, at least one standby power supply branch, the delay control branch and the interlocking branch;
the security component is connected with the main power supply branch circuit and the standby power supply branch circuit;
the voltage protection component is connected with the main power supply branch, the standby power supply branch, the delay control branch and the interlocking branch;
the interlocking branch circuit is used for controlling the main power supply branch circuit and the standby power supply branch circuit to be in an interlocking state or a non-interlocking state;
the voltage protection component is used for outputting a first switching signal to the delay control branch circuit if the interlocking branch circuit is in the non-interlocking state under the condition that the power supply of the main power supply branch circuit is abnormal;
and the delay control branch circuit is used for controlling the standby power supply branch circuit to supply power for the security component in a delay manner under the condition of receiving the first switching signal.
Optionally, the interlocking branch is further configured to control the multiple standby power supply branches to be in an interlocking state or a non-interlocking state if the multiple standby power supply branches are included;
the voltage protection component is further configured to, when determining that the plurality of backup power supply branches are in a non-interlocked state, output a second switching signal to the delay control branch if determining that the current power supply branch is abnormal, where the current power supply branch is one of the plurality of backup power supply branches;
and the delay control branch circuit is used for controlling one of the standby power supply branches except the current power supply branch circuit to supply power to the security component in a delay manner under the condition that the second switching signal is received.
Optionally, the interlocking branch includes: and one end of the knob switch is connected with the first end of the voltage protection assembly, and the other end of the knob switch is connected with the positive electrode of the power supply access end and is used for determining that the main power supply branch and the standby power supply branch are in the non-interlocking state under the condition that the knob switch is positioned at a designated position.
Optionally, the delay control branch includes: the power supply comprises a first time relay and a coil of a first outlet relay, wherein one end of the coil of the first time relay is connected with a second end of the voltage protection assembly, the other end of the coil of the first time relay is connected with a negative electrode of the power supply access end, a contact switch of the first time relay is connected with the coil of the first outlet relay in series, one end of the contact switch of the first time relay is connected with a positive electrode of the power supply access end, and the other end of the contact switch of the first time relay is connected with the negative electrode of the power supply access end;
the interlock bypass further comprises: the contact switch of the first outlet relay, one end of the contact switch of the first outlet relay is connected with the knob switch, the other end of the contact switch of the first outlet relay is connected with the negative electrode of the power supply access end, and the contact switch is used for determining that the main power supply branch and the current standby power supply branch are in the non-interlocking state and the current standby power supply branch and other standby power supply branches except the current standby power supply branch are in the non-interlocking state under the condition that the knob switch is in a designated position.
Optionally, the delay control branch further includes: one end of the coil of the second time relay is connected with a third end of the voltage protection component, the other end of the coil of the second time relay is connected with a negative electrode of the power supply access end, a contact switch of the second time relay is connected with the coil of the second outlet relay in series, one end of the contact switch of the second time relay is connected with a positive electrode of the power supply access end, and the other end of the contact switch of the second time relay is connected with the negative electrode of the power supply access end;
the interlock bypass further comprises: the protection assembly is connected with the contact switch of the second outlet relay in series, one end of the contact switch of the second outlet relay is connected with the knob switch, the other end of the contact switch is connected with the negative electrode of the power supply access end, and the contact switch is used for determining that the main power supply branch and the current standby power supply branch are in the non-interlocking state and the current standby power supply branch and other standby power supply branches except the current standby power supply branch are in the non-interlocking state under the condition that the knob switch is in a designated position.
Optionally, the delay control branch further includes: one end of the coil of the third time relay is connected with the fourth end of the voltage protection component, and the other end of the coil of the third time relay is connected with the negative electrode of the power supply access end;
the interlock bypass further comprises: the contact switch of the third time relay, one end of the contact switch of the third time relay is connected with the knob switch, the other end of the contact switch of the third time relay is connected with the negative electrode of the power supply access end, and the contact switch is used for determining that the main power supply branch and the current standby power supply branch are in the non-interlocking state under the condition that the knob switch is at a specified position, and the current standby power supply branch and other standby power supply branches except the current standby power supply branch are in the non-interlocking state.
Optionally, the backup power supply branch includes: the first standby power supply branch is connected with the security component through the standby incoming line switch;
the first backup power supply branch includes: the device comprises a first standby power supply and a first standby switch, wherein the first standby power supply is connected with one end of the first standby switch, and the other end of the first standby switch is connected with the standby incoming line switch;
the control end of the first standby switch is connected with the voltage protection component.
Optionally, the backup power supply branch includes: the second standby power supply branch is connected with the security component through the standby incoming line switch;
the second backup power supply branch includes: the second standby power supply is connected with one end of the second standby switch, and the other end of the second standby switch is connected with the standby incoming line switch;
and the control end of the second standby switch is connected with the voltage protection component.
Optionally, the primary power supply branch includes: a main power supply and a main incoming line switch;
the main power supply is connected with the security component through the main incoming line switch.
Optionally, the voltage protection component further comprises a power supply access port;
the power supply access port is used for connecting the power supply access end.
Through above-mentioned technical scheme, power supply circuit includes: the voltage protection assembly is connected with the main power supply branch, the standby power supply branch, the delay control branch and the interlocking branch, so that the main power supply branch and the standby power supply branch can be controlled to be in a non-interlocking state through the interlocking branch, the voltage protection assembly outputs a first switching signal to the delay control branch under the condition that the power supply of the main power supply branch is abnormal, the delay control branch delays and controls the standby power supply branch to supply power for the security assembly, the main power supply branch is effectively switched to the standby power supply branch, the power supply circuit is ensured to continuously supply power for the security assembly, the stability and the reliability of the power supply circuit are improved, and the stability of power generation of a power plant is facilitated.
Additional features and advantages of the present disclosure will be set forth in the detailed description which follows.
Drawings
The accompanying drawings are included to provide a further understanding of the disclosure, and are incorporated in and constitute a part of this specification, illustrate the disclosure and together with the description serve to explain, but do not limit the disclosure. In the drawings:
FIG. 1 is a schematic diagram of the line connections of a prior art power plant security segment;
FIG. 2 is a schematic diagram of a power supply circuit shown in accordance with an exemplary embodiment of the present disclosure;
FIG. 3 is a schematic diagram of another power supply circuit shown according to an exemplary embodiment of the present disclosure;
fig. 4 is a schematic diagram of yet another power supply circuit shown in accordance with the embodiment of fig. 2.
Detailed Description
Specific embodiments of the present disclosure are described in detail below with reference to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the disclosure, are not intended to limit the disclosure.
Fig. 1 is a schematic diagram of circuit connection of a safety section of an existing power plant, as shown in fig. 1, the safety section of the power plant may include a working power supply section, a standby power supply section and a safety load, the safety load may be an auxiliary lubrication pump of a water supply pump, an ac lubrication pump of a cooling fan turbo generator for flame monitoring, a top shaft pump, a sealed oil pump, a charging device of a storage battery, and the like, the working power supply section includes a working power supply switch, the working power supply section is connected with the safety load through the working power supply switch, the standby power supply section includes a standby power supply switch, the standby power supply section is connected with the safety load through the standby power supply switch, and the safety section is used for ensuring safe operation of a generator set and rapidly starting the generator set under the condition of accident elimination. However, the low voltage protection device simultaneously sends out a jump power supply switching instruction, and when the jump power supply switching instruction is combined with a third power supply instruction or a diesel engine starting instruction, the switching between the working power supply and the standby power supply and the switching between the current standby power supply and other standby power supplies are disordered, so that the power supply of the security section is lost, and a generator set and other power generating equipment are damaged.
Fig. 2 is a schematic diagram of a power supply circuit, as shown in fig. 2, according to an exemplary embodiment of the present disclosure, the power supply circuit may include: a voltage protection component 201, a security component 202, a primary power supply leg 203, at least one backup power supply leg 204, a delay control leg 205, and an interlock leg 206; the security component 202 is connected with the main power supply branch 203 and the standby power supply branch 204; the voltage protection component 201 is connected with the main power supply branch 203, the standby power supply branch 204, the delay control branch 205 and the interlocking branch 206; the interlocking branch 206 is configured to control the primary power supply branch 203 and the backup power supply branch 204 to be in an interlocking state or a non-interlocking state; the voltage protection component 201 may be configured to, in a case where it is determined that the power supply of the main power supply branch 203 is abnormal, output a first switching signal to the delay control branch 205 if the interlock branch 206 is in the non-interlock state; the delay control branch 205 may be configured to delay control the standby power supply branch 204 to supply power to the security component 202 when the first switching signal is received.
The voltage protection component 201 may be a voltage protection device, such as an RCS-9698 microcomputer protection device or an RCS-9628 microcomputer protection device, or may be a device that can be used to monitor a circuit and control switching of the circuit. The security assembly 202 may be an auxiliary lubrication pump for a feed pump, a cooling fan for flame monitoring, and an ac lubrication pump, a jackshaft pump, a seal pump, etc. for a turbo generator.
It should be noted that, the detection end of the voltage protection component 201 is connected to the main power supply branch 203, the first control output end of the voltage protection component 201 is connected to the main power supply branch 203, the second control output end of the voltage protection component 201 is connected to the standby power supply branch 204, the third control output end of the voltage protection component 201 is connected to the delay control branch 205, the output end of the voltage protection component 201 is connected to the first input end of the delay control branch 205, the second input end of the delay control branch 205 is connected to the positive electrode of the power supply access end, the output end of the delay control branch 205 is connected to the negative electrode of the power supply access end, the input end of the voltage protection component 201 is connected to the first output end of the interlocking branch 206, the input end of the interlocking branch 206 is connected to the positive electrode of the power supply access end, and the voltage protection component 201 determines that the interlocking branch 206 is in a non-interlocking state through the input end of the voltage protection component 201 when it is determined that the main power supply branch 203 is abnormal, the protection device in the main power supply branch 203 is controlled, so that the main power supply branch 203 is disconnected, the second input end of the delay control branch 205 outputs a power supply signal to the first delay control branch 205, and a switching signal is received in the delay control branch 204.
According to the scheme, the main power supply branch and the standby power supply branch can be controlled to be in the non-interlocking state through the interlocking branch, the voltage protection component outputs a first switching signal to the delay control branch under the condition that the power supply of the main power supply branch is abnormal, the delay control branch delays to control the standby power supply branch to supply power to the security component, the main power supply branch is effectively switched to the standby power supply branch, the power supply circuit is ensured to continuously supply power to the security component, and therefore the stability and the reliability of the power supply circuit are improved, and the stability of power generation of a power plant is facilitated.
Alternatively, still taking fig. 2 as an example, the interlocking branch 206 may be further configured to control the interlocking state or the non-interlocking state of the plurality of backup power supply branches 204 in the case that the plurality of backup power supply branches 204 are included; the voltage protection component 201 may be further configured to, in a case where it is determined that the plurality of backup power supply branches 204 are in an unlinked state, output a second switching signal to the delay control branch 205 if it is determined that a current power supply branch is abnormal in power supply, where the current power supply branch is one of the plurality of backup power supply branches 204; the delay control branch 205 may be configured to delay control one of the standby power supply branches 204 other than the current power supply branch 204 to supply power to the security component 202 when the second switching signal is received.
It should be noted that, the power supply circuit may include a plurality of standby power supply branches 204, the interlocking branch 206 may also control the plurality of standby power supply branches 204 to be in an interlocking state or a non-interlocking state, if it is determined that the plurality of standby power supply branches 204 are in the non-interlocking state, the voltage protection component 201 controls the current standby power supply branch 204 to be disconnected and outputs a second switching signal to the delay control branch 205 when it is determined that the current standby power supply branch 204 is abnormal in power supply, and the delay control branch 205 controls one of the standby power supply branches 204 except the current standby power supply branch 204 to be connected when it receives the second switching signal, so as to supply power to the security component 202.
It should be further noted that, if it is determined that the plurality of backup power supply branches 204 are in the interlocked state, the voltage protection component 201 cannot control the current backup power supply branch 204 to be disconnected and cannot output the second switching signal to the delay control branch 205 when it is determined that the current backup power supply branch 204 is abnormal in power supply, and the maintenance personnel is required to manually operate the switching between the plurality of backup power supply branches 204, so that one of the backup power supply branches 204 other than the current backup power supply branch 204 is turned on to supply power to the security component 202.
Fig. 3 is a schematic diagram of another power supply circuit according to an exemplary embodiment of the present disclosure, and as shown in fig. 3, the interlock bypass 206 includes: and a knob switch 2061, wherein one end of the knob switch 2061 is connected with the first end of the voltage protection assembly 201, and the other end of the knob switch 2061 is connected with the positive electrode of the power supply access end, so as to determine that the main power supply branch 203 and the standby power supply branch 204 are in the non-interlocking state when the knob switch 2061 is at a specified position.
The designated position may be a position where the knob switch 2061 is in a closed state.
When the knob switch 2061 is at the designated position, the interlock branch 206 is in the non-interlocked state, the main power supply branch 203 and the standby power supply branch 204 may be switched, one end of the knob switch 2061 may be connected to the first end of the voltage protection component 201, a signal that the interlock branch 206 is in the non-interlocked state may be sent to the voltage protection component 201, and when the voltage protection component 201 receives the signal, if it is determined that the power supply of the main power supply branch 203 is abnormal, the standby power supply branch 204 may be controlled by the delay control branch 205 to supply power to the security component 202.
Alternatively, still taking fig. 3 as an example, the delay control branch 205 includes: the power supply comprises a first time relay KT1 and a coil of a first outlet relay KM1, wherein one end of the coil of the first time relay KT1 is connected with a second end of the voltage protection assembly 201, the other end of the coil of the first time relay KT1 is connected with a negative electrode of the power supply access end, a contact switch of the first time relay KT1 is connected with the coil of the first outlet relay KM1 in series, one end of the contact switch is connected with a positive electrode of the power supply access end, and the other end of the contact switch is connected with the negative electrode of the power supply access end; the interlock bypass 206 further comprises: the contact switch of the first outlet relay KM1, one end of the contact switch of the first outlet relay KM1 is connected with the knob switch 2061, and the other end of the contact switch of the first outlet relay KM1 is connected with the negative pole of the power supply access end, so as to determine that the main power supply branch 203 and the current standby power supply branch 204 are in the non-interlocking state, and the current standby power supply branch 204 and other standby power supply branches 204 except the current standby power supply branch 204 are in the non-interlocking state when the knob switch 2061 is in a specified position.
It should be noted that, when the knob switch 2061 is at the designated position, the interlock branch 206 is in the non-interlocked state, the voltage protection component 201 sends a voltage signal to the coil of the first time relay KT1 when it is determined that the power supply of the main power supply branch 203 is abnormal, the first time relay KT1 closes the contact switch of the first time relay KT1 according to the preset time delay when the coil of the first time relay KT1 is energized, the contact switch of the first time relay KT1 is closed, the coil of the first outlet relay KM1 is energized, and the voltage protection component 201 controls the standby power supply branch 204 to supply power to the security component 202.
Optionally, still taking fig. 3 as an example, the delay control branch 205 further includes: a coil of a second time relay KT2 and a coil of a second outlet relay KM2, wherein one end of the coil of the second time relay KT2 is connected with a third end of the voltage protection component 201, the other end of the coil of the second time relay KT2 is connected with a negative electrode of the power supply access end, a contact switch of the second time relay KT2 and the coil of the second outlet relay KM2 are connected in series, one end of the contact switch is connected with a positive electrode of the power supply access end, and the other end of the contact switch is connected with the negative electrode of the power supply access end; the interlock bypass 206 further comprises: the protection component XB and the contact switch of the second outlet relay KM2, the contact switch of the second outlet relay KM2 is connected with one end of the protection component XB in series, and the other end of the contact switch is connected with the negative electrode of the power supply access end, so as to determine that the main power supply branch 203 and the current standby power supply branch 204 are in the non-interlocking state, and the current standby power supply branch 204 and other standby power supply branches 204 except the current standby power supply branch 204 are in the non-interlocking state when the knob switch 2061 is in a specified position.
Wherein the protection component XB may be a trip clamp for detecting a current passing through the contact switch of the second outlet relay KM2, and opening the circuit in case the current passing is greater than a rated current of the contact switch of the second outlet relay KM 2.
It should be noted that, when it is determined that the power supply of the main power supply branch 203 is abnormal, the voltage protection component 201 sends a voltage signal to the coil of the second time relay KT2, and when the coil of the second time relay KT2 is energized, the second time relay KT2 closes the contact switch of the second time relay KT2 according to the preset time delay, the contact switch of the second time relay KT2 is closed, the coil of the second outlet relay KM2 is energized, and the voltage protection component 201 controls the standby power supply branch 204 to supply power to the security component 202.
Optionally, still taking fig. 3 as an example, the delay control branch 205 further includes: a coil of a third time relay KT3, wherein one end of the coil of the third time relay KT3 is connected with a fourth end of the voltage protection assembly 201, and the other end of the coil of the third time relay KT3 is connected with a negative electrode of the power supply access end; the interlock bypass 206 further comprises: the contact switch of the third time relay KT3, one end of the contact switch of the third time relay KT3 is connected with the knob switch 2061, and the other end of the contact switch of the third time relay KT3 is connected with the negative electrode of the power supply access end, so as to determine that the main power supply branch 203 and the current standby power supply branch 204 are in the non-interlocking state and the current standby power supply branch 204 and other standby power supply branches 204 except the current standby power supply branch 204 are in the non-interlocking state when the knob switch 2061 is in a specified position.
When it is determined that the power supply of the main power supply branch 203 is abnormal, the voltage protection component 201 sends a voltage signal to the coil of the second time relay KT3, and when the coil of the second time relay KT3 is energized, the second time relay KT3 closes the contact switch of the second time relay KT3 according to the preset time delay, the contact switch of the second time relay KT2 is closed, and the voltage protection component 201 controls the standby power supply branch 204 to supply power to the security component 202.
Fig. 4 is a schematic diagram of yet another power supply circuit according to the embodiment shown in fig. 2, and as shown in fig. 4, the backup power supply branch 204 includes: a first backup power supply branch and a backup incoming switch 2041, said first backup power supply branch being connected to said security assembly 202 via said backup incoming switch 2041; the first backup power supply branch includes: a first standby power supply 2042 and a first standby switch 2043, wherein the first standby power supply 2042 is connected with one end of the first standby switch 2043, and the other end of the first standby switch 2043 is connected with the standby incoming line switch 2041; the control terminal of the first backup switch 2043 is connected to the voltage protection assembly 201.
It should be noted that, the control end of the standby incoming line switch 2041 is connected to the voltage protection component 201, and when the power supply of the main power supply branch 203 is abnormal, the voltage protection component 201 controls the standby incoming line switch 2041 to be closed, and turns on the standby power supply branch 204, and the voltage protection component 201 controls the first standby switch 2043 to be closed, so that the first standby power source 2042 is connected to the standby power supply branch 204, and supplies power to the security component 202.
Alternatively, still taking fig. 4 as an example, the backup power supply branch 204 includes: a second backup power supply branch coupled to the security assembly 202 via the backup line switch 2041; the second backup power supply branch includes: a second standby power supply 2044 and a second standby switch 2045, wherein the second standby power supply 2044 is connected with one end of the second standby switch 2045, and the other end of the second standby switch 2045 is connected with the standby incoming line switch 2041; the control terminal of the second backup switch 2045 is connected to the voltage protection component 201.
It should be noted that, in the case of abnormal power supply of the first backup power supply branch, the voltage protection component 201 controls the second backup switch 2045 to be closed, and the second backup power source 2044 is connected to the backup power supply branch 204 to supply power to the safety component 202.
Alternatively, still taking fig. 4 as an example, the main power supply branch 203 includes: a main power supply and a main incoming line switch; the primary power supply is connected to the security assembly 202 through the primary incoming line switch.
The main power supply can be a power supply provided by the power generation of a generator set of a power plant.
Optionally, the voltage protection component 201 further includes a power supply access port; the power supply access port is used for connecting the power supply access end.
The preferred embodiments of the present disclosure have been described in detail above with reference to the accompanying drawings, but the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solutions of the present disclosure within the scope of the technical concept of the present disclosure, and all the simple modifications belong to the protection scope of the present disclosure.
In addition, the specific features described in the foregoing embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, the present disclosure does not further describe various possible combinations.
Moreover, any combination between the various embodiments of the present disclosure is possible as long as it does not depart from the spirit of the present disclosure, which should also be construed as the disclosure of the present disclosure.
Claims (10)
1. A power supply circuit, the power supply circuit comprising: the voltage protection assembly, the security assembly, the main power supply branch, at least one standby power supply branch, the delay control branch and the interlocking branch;
the security component is connected with the main power supply branch circuit and the standby power supply branch circuit;
the voltage protection component is connected with the main power supply branch, the standby power supply branch, the delay control branch and the interlocking branch;
the interlocking branch circuit is used for controlling the main power supply branch circuit and the standby power supply branch circuit to be in an interlocking state or a non-interlocking state;
the voltage protection component is used for outputting a first switching signal to the delay control branch circuit if the interlocking branch circuit is in the non-interlocking state under the condition that the power supply of the main power supply branch circuit is abnormal;
and the delay control branch circuit is used for controlling the standby power supply branch circuit to supply power for the security component in a delay manner under the condition of receiving the first switching signal.
2. The power supply circuit of claim 1, wherein the interlock branch is further configured to control the plurality of backup power supply branches to an interlocked state or a non-interlocked state if the plurality of backup power supply branches are included;
the voltage protection component is further configured to, when determining that the plurality of backup power supply branches are in a non-interlocked state, output a second switching signal to the delay control branch if determining that the current power supply branch is abnormal, where the current power supply branch is one of the plurality of backup power supply branches;
and the delay control branch circuit is used for controlling one of the standby power supply branches except the current power supply branch circuit to supply power to the security component in a delay manner under the condition that the second switching signal is received.
3. The power supply circuit of claim 2, wherein the interlock bypass comprises: and one end of the knob switch is connected with the first end of the voltage protection assembly, and the other end of the knob switch is connected with the positive electrode of the power supply access end and is used for determining that the main power supply branch and the standby power supply branch are in the non-interlocking state under the condition that the knob switch is positioned at a designated position.
4. A power supply circuit according to claim 3, wherein the delay control branch comprises: the power supply comprises a first time relay and a coil of a first outlet relay, wherein one end of the coil of the first time relay is connected with a second end of the voltage protection assembly, the other end of the coil of the first time relay is connected with a negative electrode of the power supply access end, a contact switch of the first time relay is connected with the coil of the first outlet relay in series, one end of the contact switch of the first time relay is connected with a positive electrode of the power supply access end, and the other end of the contact switch of the first time relay is connected with the negative electrode of the power supply access end;
the interlock bypass further comprises: the contact switch of the first outlet relay, one end of the contact switch of the first outlet relay is connected with the knob switch, the other end of the contact switch of the first outlet relay is connected with the negative electrode of the power supply access end, and the contact switch is used for determining that the main power supply branch and the current standby power supply branch are in the non-interlocking state and the current standby power supply branch and other standby power supply branches except the current standby power supply branch are in the non-interlocking state under the condition that the knob switch is in a designated position.
5. The power supply circuit of claim 4, wherein the delay control branch further comprises: one end of the coil of the second time relay is connected with a third end of the voltage protection component, the other end of the coil of the second time relay is connected with a negative electrode of the power supply access end, a contact switch of the second time relay is connected with the coil of the second outlet relay in series, one end of the contact switch of the second time relay is connected with a positive electrode of the power supply access end, and the other end of the contact switch of the second time relay is connected with the negative electrode of the power supply access end;
the interlock bypass further comprises: the protection assembly is connected with the contact switch of the second outlet relay in series, one end of the contact switch of the second outlet relay is connected with the knob switch, the other end of the contact switch is connected with the negative electrode of the power supply access end, and the contact switch is used for determining that the main power supply branch and the current standby power supply branch are in the non-interlocking state and the current standby power supply branch and other standby power supply branches except the current standby power supply branch are in the non-interlocking state under the condition that the knob switch is in a designated position.
6. The power supply circuit of claim 5, wherein the delay control branch further comprises: one end of the coil of the third time relay is connected with the fourth end of the voltage protection component, and the other end of the coil of the third time relay is connected with the negative electrode of the power supply access end;
the interlock bypass further comprises: the contact switch of the third time relay, one end of the contact switch of the third time relay is connected with the knob switch, the other end of the contact switch of the third time relay is connected with the negative electrode of the power supply access end, and the contact switch is used for determining that the main power supply branch and the current standby power supply branch are in the non-interlocking state under the condition that the knob switch is at a specified position, and the current standby power supply branch and other standby power supply branches except the current standby power supply branch are in the non-interlocking state.
7. The power supply circuit of claim 6, wherein the backup power supply branch comprises: the first standby power supply branch is connected with the security component through the standby incoming line switch;
the first backup power supply branch includes: the device comprises a first standby power supply and a first standby switch, wherein the first standby power supply is connected with one end of the first standby switch, and the other end of the first standby switch is connected with the standby incoming line switch;
the control end of the first standby switch is connected with the voltage protection component.
8. The power supply circuit of claim 7, wherein the backup power supply branch comprises: the second standby power supply branch is connected with the security component through the standby incoming line switch;
the second backup power supply branch includes: the second standby power supply is connected with one end of the second standby switch, and the other end of the second standby switch is connected with the standby incoming line switch;
and the control end of the second standby switch is connected with the voltage protection component.
9. The power supply circuit of claim 8, wherein the active power supply branch comprises: a main power supply and a main incoming line switch;
the main power supply is connected with the security component through the main incoming line switch.
10. The power supply circuit of claim 9, wherein the voltage protection component further comprises a power supply access port;
the power supply access port is used for connecting the power supply access end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311168512.4A CN117411166A (en) | 2023-09-08 | 2023-09-08 | Power supply circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311168512.4A CN117411166A (en) | 2023-09-08 | 2023-09-08 | Power supply circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117411166A true CN117411166A (en) | 2024-01-16 |
Family
ID=89497006
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311168512.4A Pending CN117411166A (en) | 2023-09-08 | 2023-09-08 | Power supply circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117411166A (en) |
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2023
- 2023-09-08 CN CN202311168512.4A patent/CN117411166A/en active Pending
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