CN116742788B - Automatic switching-on method and device for standby power supply - Google Patents
Automatic switching-on method and device for standby power supply Download PDFInfo
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- CN116742788B CN116742788B CN202311027751.8A CN202311027751A CN116742788B CN 116742788 B CN116742788 B CN 116742788B CN 202311027751 A CN202311027751 A CN 202311027751A CN 116742788 B CN116742788 B CN 116742788B
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- 230000005611 electricity Effects 0.000 abstract 1
- 230000006870 function Effects 0.000 description 7
- 230000000903 blocking effect Effects 0.000 description 6
- 230000003111 delayed effect Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 230000003287 optical effect Effects 0.000 description 6
- 238000004590 computer program Methods 0.000 description 5
- 238000007599 discharging Methods 0.000 description 4
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Classifications
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- 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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
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- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Stand-By Power Supply Arrangements (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The disclosure provides an automatic switching method and device of a standby power supply, which relate to the technical field of power supply of station service electricity and comprise the following steps: in response to determining that the first power supply is in a fault state, opening the first circuit breaker and closing the second circuit breaker of the second power supply, if the second circuit breaker is successfully closed and the power supply is not recovered by the power system, opening the second circuit breaker and closing the third circuit breaker of the third power supply, in response to detecting that the first power supply is recovered to be in an available state and receiving a switching instruction, opening the second circuit breaker and closing the first circuit breaker; if the first circuit breaker is successfully switched on and the power supply system does not recover the power supply, the first circuit breaker is disconnected and the third circuit breaker of the third power supply is switched on, or if the first circuit breaker is failed to be switched on, the third circuit breaker of the third power supply is switched on. Therefore, besides ensuring the power supply reliability of the station service power system, the station service power system switching operation is facilitated, and the switching operation efficiency is improved.
Description
Technical Field
The disclosure relates to the technical field of power supply for industrial use, in particular to an automatic input method and device for a standby power supply.
Background
The power plant in a large hydropower plant is a prerequisite for ensuring the safe and stable operation of the generator set, and the power plant is interrupted to cause the forced shutdown of the generator set. In order to ensure the reliability of the station service power system, a plurality of power supplies are generally configured in the station service power system, and in order to prevent the power supply to equipment from being influenced when one power supply fails, an automatic standby power supply switching-on device is configured in the station service power system, so that the working power supply can be rapidly and automatically switched off after the working power supply is powered off, the standby power supply is switched on, and the power supply continuity is ensured. Meanwhile, the wiring mode of a factory power system in a large hydropower plant is complex, the power supply points are more, and the switching operation is complex and the efficiency is low when equipment overhaul, accidents and operation modes are adjusted. Therefore, how to provide a set of spare power automatic switching method with reliability, safety and high convenience is a problem to be solved in the prior art.
Disclosure of Invention
The present disclosure aims to solve, at least to some extent, one of the technical problems in the related art.
The first aspect of the present disclosure provides an automatic switching method of a standby power supply, including:
in response to determining that the first power source is in a fault state or an overhaul state, opening the first circuit breaker and closing a second circuit breaker of the second power source;
if the second circuit breaker is successfully switched on and the power supply system does not recover the power supply, the second circuit breaker is disconnected and a third circuit breaker of a third power supply is switched on, or if the second circuit breaker is failed to be switched on, the third circuit breaker of the third power supply is switched on;
in response to detecting that the first power supply is in a recovery available state and receiving a switching instruction, opening the second circuit breaker and closing the first circuit breaker;
and if the first circuit breaker is successfully switched on and the power supply system does not recover the power supply, switching off the first circuit breaker and switching on a third circuit breaker of a third power supply, or if the first circuit breaker is failed to be switched on, switching on the third circuit breaker of the third power supply.
The second aspect of the present disclosure provides an automatic switching device of a standby power supply, including:
the first switch module is used for responding to the determination that the first power supply is in a fault state or an overhaul state, opening the first circuit breaker and closing the second circuit breaker of the second power supply;
the judging module is used for switching off the second circuit breaker and switching on a third circuit breaker of a third power supply if the second circuit breaker is switched on successfully and the power supply system does not recover the power supply, or switching on the third circuit breaker of the third power supply if the second circuit breaker is switched on failed;
the detection module is used for switching off the second circuit breaker and closing the first circuit breaker in response to the condition that the first power supply is detected to be in a usable state and a switching instruction is received;
and the second switch module is used for switching off the first circuit breaker and switching on a third circuit breaker of a third power supply if the first circuit breaker is switched on successfully and the power supply system does not recover the power supply, or switching on the third circuit breaker of the third power supply if the first circuit breaker is switched on failed.
A third aspect of the present disclosure proposes an electronic device comprising: the system comprises a memory, a processor and a computer program stored in the memory and capable of running on the processor, wherein the processor realizes the automatic switching-on method of the standby power supply as proposed in the first aspect of the disclosure when the processor executes the program.
A fourth aspect of the present disclosure proposes a non-transitory computer-readable storage medium storing a computer program which, when executed by a processor, implements the automatic switching-on method of a backup power source as proposed in the first aspect of the present disclosure.
The method has the following beneficial effects:
in the disclosure, a first circuit breaker is opened and a second circuit breaker of a second power supply is closed in response to determining that the first power supply is in a fault state or an overhaul state, if the second circuit breaker is closed successfully and the power supply is not restored by an electric system, the second circuit breaker is opened and a third circuit breaker of a third power supply is closed, or if the second circuit breaker is closed failed, the third circuit breaker of the third power supply is closed, then in response to detecting that the first power supply is restored to an available state and receiving a switching instruction, the second circuit breaker is opened and the first circuit breaker is closed, and then if the first circuit breaker is closed successfully and the power supply is not restored by the electric system, the first circuit breaker is opened and the third circuit breaker of the third power supply is closed, or if the first circuit breaker is closed failed, the third circuit breaker of the third power supply is closed. Therefore, besides ensuring the power supply reliability of the power system of the plant, the switching operation of the power system of the plant is facilitated, and the switching operation efficiency is improved so as to meet the requirements of the hydropower plant under various conditions such as normal operation, accidents, overhaul and the like.
Additional aspects and advantages of the disclosure will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the disclosure.
Drawings
The foregoing and/or additional aspects and advantages of the present disclosure will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:
fig. 1 is a schematic flow chart of an automatic switching method of a standby power supply according to an embodiment of the disclosure;
fig. 2 is an application scenario diagram of an automatic standby power supply switching method according to an embodiment of the present disclosure;
FIG. 3 is a flowchart of another method for automatically switching on a standby power supply according to an embodiment of the disclosure;
fig. 4 is a block diagram of an automatic switching device of a standby power supply according to an embodiment of the disclosure;
fig. 5 illustrates a block diagram of an exemplary computer device suitable for use in implementing embodiments of the present disclosure.
Detailed Description
Embodiments of the present disclosure are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and intended for the purpose of explaining the present disclosure and are not to be construed as limiting the present disclosure.
The automatic switching method, apparatus, computer device and storage medium of the standby power supply according to the embodiments of the present disclosure are described below with reference to the accompanying drawings.
The execution subject of the automatic switching method of the standby power supply in the embodiment of the present disclosure is an automatic switching device of the standby power supply.
Fig. 1 is a flowchart of an automatic switching method of a standby power supply according to a first embodiment of the disclosure.
As shown in fig. 1, the automatic switching method of the standby power may include the steps of:
in response to determining that the first power source is in a fault or service condition, the first circuit breaker is opened and a second circuit breaker of the second power source is closed, step 101.
The first power source may be a working power source. The second power source may be a backup power source. Wherein the first circuit breaker
As shown in fig. 2, fig. 2 shows an application scenario diagram of a spare power automatic switching logic, where 1DL, 2DL, and 3DL are all circuit breakers. Wherein, 1DL is first circuit breaker, 2DL is the second circuit breaker, 3DL is the third circuit breaker, and power 1 is first power, and power 2 is the second power, and power 3 is the third power.
The three power supply voltages Ux1, ux2 and Ux3 can be used for judging whether the power supply of the corresponding branch circuit has voltage or not, and can be used or not through selection of the control word.
The tripping position contacts of 1DL, 2DL and 3DL can be used for system operation mode identification, automatic switching preparation and automatic switching action.
In addition, as an example of a self-switching method, if the first power supply is in a fault state or an inspection state, the first power supply does not have a power supply operation condition at this time. It is necessary to automatically open the first circuit breaker and close the second circuit breaker of the second power supply.
Optionally, if the second circuit breaker fails to be turned on, a third circuit breaker of a third power supply is turned on, wherein the second power supply and the third power supply are both standby power supplies. Alternatively, if the power supply is not restored after the second circuit breaker is closed, the second circuit breaker may be again opened, and the third circuit breaker 3DL may be closed.
It should be noted that, if the first power supply can normally supply power, and the second power supply and the third power supply are not operated as standby power supplies, the following 3 charging conditions need to be satisfied, and after a preset charging time, the completion of charging can be confirmed. The 3 charging conditions are: 1. the three phases of the bus are pressed; 2. the second power supply or the third power supply ready signal is 1; 3. 1DL is in the combining position, 2DL and 3DL are in the dividing position. It should be noted that, if the first automatic switching mode is that the first power supply operates, the second power supply and the third power supply are standby, then any one of the following discharging conditions can be satisfied to realize discharging:
1) The second power supply ready signal and the third power supply ready signal are both 0, and the discharge is carried out after 15s delay;
2) When the third power supply exits the spare power switching on and enters 1, the second power supply does not meet the pressure condition, and the discharge is delayed for 15 seconds;
3) When the second power supply exits the spare power switching on and enters 1, the third power supply does not meet the condition of pressure existence, and the discharge is delayed for 15 seconds;
4) 3DL is in the close position;
5) When 1DL is in the closed position, the 1DL protection blocking opening is changed into 1;
6) When 2DL is in the closed position, 2DL protection blocking opening is changed into 1;
7) The 'blocking standby power automatic switching' is started;
8) At least two of 1DL and 2DL exit spare power switching devices and 3DL exit spare power switching devices are 1;
9) A skip bit exception of 1DL, 2DL, or 3 DL;
101 DL or 2DL switch reject;
11 After a 2DL closing instruction is sent out, the bus is restored to have pressure within a preset switch refusing judgment time period;
12 2DL failure and the third power ready signal is 0;
13 Receiving a closing 3DL closing instruction;
14 A charging protection action;
15 When the first automatic switching mode is not operated, 2DL is at the closing position.
After the charging is completed, the bus is out of voltage (the line voltage is smaller than the preset bus non-voltage starting fixed value), the I1 is not in current, the second power supply is ready or the third power supply is ready, the direct starting is performed, and after the starting, the tripping time delay of the first power supply is performed, and the first power supply breaker 1DL is jumped. Confirm 1DL clear, then:
if the bus is not pressed (the line voltage is smaller than the preset bus non-voltage starting fixed value), the second power supply ready signal is 1, the 2DL breaker is delayed to be closed through the first automatic switching mode closing time, and if the bus is restored to be pressed (the minimum interphase voltage is larger than the bus pressed fixed value) within the preset switch refusing judging time, the spare power automatic switching is finished.
If the closing condition is not met or the closing of 2DL fails and the third power supply readiness signal is 1, when 2DL is in the closing position, a 2DL skip instruction is immediately sent, after 1DL and 2DL are confirmed to be tripped and no current exists, the bus is not pressed (the line voltage is smaller than the bus non-pressing brake fixed value), and the 3DL breaker is closed by the time delay of the closing time.
Optionally, in a preset switch refusing judging time period, if the bus voltage corresponding to the second power supply does not meet a preset condition, determining that the closing of the second circuit breaker fails, and alarming.
If the bus voltage corresponding to the second power supply is smaller than the set value, the preset condition is considered to be not met, wherein the set value can be determined according to actual experience.
Step 102, if the second circuit breaker is successfully closed and the power supply of the power utilization system is not restored, the second circuit breaker is disconnected and the third circuit breaker of the third power supply is closed, or if the second circuit breaker is failed to be closed, the third circuit breaker of the third power supply is closed.
And step 103, in response to detecting that the first power supply is in a recovery available state and receiving a switching instruction, opening the second circuit breaker and closing the first circuit breaker.
Specifically, if the first power supply can supply power and receive a switching instruction, the second circuit breaker can be opened again.
If the service power system needs to be switched to the condition that the 1DL breaker supplies power or the 2DL breaker fails, the 2DL breaker can be tripped by manual or automatic spare power switching operation, the 1DL of the main power breaker is automatically closed by the automatic spare power switching operation, and when the 1DL breaker is closed, the power supply is restored, and the automatic spare power switching operation is finished.
If the second power supply can normally supply power and the first power supply and the third power supply are not operated as standby power supplies, the following 3 charging conditions need to be satisfied, and the completion of charging can be confirmed after a preset charging time has elapsed. The 3 charging conditions are: 1. the three phases of the bus are pressed; 2. the first power supply or the third power supply ready signal is 1; 3. 2DL is in the combining position, 1DL and 3DL are in the dividing position. It should be noted that, if the second automatic switching mode is that the second power supply operates, the first power supply and the third power supply are standby, and then any one of the following discharging conditions can be satisfied to realize discharging:
1) The first power supply ready signal and the third power supply ready signal are 0, and the discharge is carried out after 15s delay;
2) When the third power supply exits the spare power switching on and enters 1, the first power supply does not meet the pressure condition, and the discharge is delayed for 15 seconds;
3) When the first power supply exits the spare power switching on and enters 1, the third power supply does not meet the condition of pressure existence, and the discharge is delayed for 15 seconds;
4) 3DL is in the close position;
5) When 1DL is in the closed position, the 1DL protection blocking opening is changed into 1;
6) When 2DL is in the closed position, 2DL protection blocking opening is changed into 1;
7) The 'blocking standby power automatic switching' is started;
8) At least two of 1DL and 2DL exit spare power switching devices and 3DL exit spare power switching devices are 1;
9) A skip bit exception of 1DL, 2DL, or 3 DL;
101 DL or 2DL switch reject;
11 After a 1 DL-on instruction is sent out, the bus is restored to have pressure within a preset switch refusing judgment time period;
12 1DL fail and the third power ready signal is 0;
13 Receiving a closing 3DL closing instruction;
14 A charging protection action;
15 If the second automatic switching mode is not operated, 1DL is at the closing position.
After the charging is completed, the bus is out of voltage (the line voltage is smaller than the preset bus non-voltage starting fixed value), the I2 is not in current, the first power supply is ready or the third power supply is ready, the direct starting is performed, and after the starting, the second power supply circuit breaker 2DL is tripped through the second power supply tripping time delay. Confirm 2DL clear, then:
if the bus is not pressed (the line voltage is smaller than the preset bus non-voltage starting fixed value), the first power supply ready signal is 1, the 1DL breaker is delayed to be closed through the [ second automatic switching mode closing time ], and if the bus is restored to be pressed (the minimum interphase voltage is larger than the bus pressed fixed value) within the preset switch refusing judging time, the automatic switching is finished.
If the closing condition is not met or the closing 1DL fails and the third power supply readiness signal is 1, when the 1DL is in the closing position, a jump 1DL instruction is immediately sent, after the 1DL and the 2DL are confirmed to be jumped and no current exists, the bus is not pressed (the line voltage is smaller than the bus non-pressing brake fixed value), and the 3DL breaker is closed by the time delay of the closing time.
Step 104, if the first circuit breaker is successfully closed and the power supply of the power utilization system is not recovered, the first circuit breaker is disconnected and the third circuit breaker of the third power supply is closed, or if the first circuit breaker is failed to be closed, the third circuit breaker of the third power supply is closed.
Optionally, in a preset switch refusing judging time period, if the bus voltage corresponding to the first power supply does not meet the preset condition, determining that the first circuit breaker fails to close, and alarming.
In the embodiment of the disclosure, first, in response to determining that a first power supply is in a fault state or an overhaul state, a first circuit breaker is opened, a second circuit breaker of a second power supply is closed, if the second circuit breaker is closed successfully and the power supply is not restored by an electric system, a third circuit breaker of a third power supply is opened, or if the second circuit breaker is closed failed, the third circuit breaker of the third power supply is closed, then in response to detecting that the first power supply is restored to an available state and receiving a switching instruction, the second circuit breaker is opened, the first circuit breaker is closed, then if the first circuit breaker is closed successfully and the power supply is not restored by the electric system, the first circuit breaker is opened and the third circuit breaker of the third power supply is closed, or if the first circuit breaker is closed failed, the third circuit breaker of the third power supply is closed. Therefore, besides ensuring the power supply reliability of the power plant system, the switching operation of the power plant system is facilitated, the switching operation efficiency is improved, the requirements of the hydropower plant under various conditions such as normal operation, accidents, overhaul and the like are met, and the power supply reliability of the power plant is improved, and the switching operation is convenient, standardized and normalized.
Fig. 3 is a flowchart illustrating an automatic standby power supply switching method according to a second embodiment of the disclosure.
As shown in fig. 3, the automatic switching method of the standby power may include the steps of:
in response to determining that the first power source is in a fault or service condition, the first circuit breaker is opened and a second circuit breaker of the second power source is closed 201.
Step 202, if the second circuit breaker is successfully switched on and the power supply of the power utilization system is not recovered, the second circuit breaker is disconnected and a third circuit breaker of a third power supply is switched on, or if the second circuit breaker is failed to be switched on, the third circuit breaker of the third power supply is switched on.
And step 203, in response to detecting that the first power supply is in a recovery available state and receiving a switching instruction, opening the second circuit breaker and closing the first circuit breaker.
Step 204, if the first circuit breaker is successfully closed and the power supply is not recovered by the power utilization system, the first circuit breaker is disconnected and a third circuit breaker of a third power supply is closed, or if the first circuit breaker is failed to be closed, the third circuit breaker of the third power supply is closed.
It should be noted that the specific implementation manner of the steps 201, 202, 203, 204 may refer to the above embodiments, and will not be described herein.
In step 205, in response to determining that the jumper relay contacts are changed from closed to open, or that the current transformer detects that the current starts to increase from zero and is greater than a preset threshold, it is determined that any circuit breaker is in a state of being changed from open to closed, and charging protection is put into operation in a preset time period.
The charging protection is the protection of the circuit breaker which is instantly input when the circuit breaker is switched by the switching, a section of inter-phase overcurrent protection is configured, and the input of the bus-bar switch is set to be 500ms in a preset time period of the switching by the switching. The breaker is put into short charging protection in a preset time period of jump-on. If the protection is not started, automatically exiting after a preset time period until the next time of the bus-tie switch is switched on again by jump; and (3) protection starting in a preset time period is always carried out, and the protection is automatically withdrawn until the fault is removed and the protection is returned.
The switch is judged by jumping to be combined with the position: under the precondition of dividing and no current, any one of the following two conditions is met, and the switch is considered to be switched on by jump, so that charging protection is put into:
1. the jump relay contact is changed from closed to open;
2. the current transformer detects that the current increases from zero and is greater than a preset threshold.
And step 206, in response to the trip command being sent to any circuit breaker, and the any circuit breaker not tripping in a preset switch refusal judgment time period, determining that the any circuit breaker refuses tripping, and giving an alarm.
In the embodiment of the disclosure, first, in response to determining that a first power supply is in a fault state or an overhaul state, a first breaker is opened, and a second breaker of a second power supply is closed, if the second breaker is successfully closed and the power supply is not restored to a power supply system, the second breaker is opened, and a third breaker of a third power supply is closed, or if the second breaker is failed to be closed, the third breaker of the third power supply is closed, then in response to detecting that the first power supply is restored to an available state and receiving a switching instruction, the second breaker is opened, and the first breaker is closed, then if the first breaker is successfully closed and the power supply is not restored to a power supply system, the first breaker is opened, and the third breaker of the third power supply is closed, or if the first breaker is failed to be closed, the third breaker of the third power supply is closed, then in response to determining that a bit relay is closed, or the current breaker is detected to be opened, the current is increased to be zero, and the current is not increased to be in a preset state, and the tripping threshold is not set in any tripping period, and the tripping period is not determined to be in response to a tripping period, and the tripping period is not set in a tripping period is determined, and the tripping period is started, and the tripping period is not is triggered. Therefore, besides the power supply reliability of the station service system, the station service system switching operation is facilitated, the switching operation efficiency is improved, the requirements of the hydropower plant under various conditions such as normal operation, accidents and overhaul are met, the station service power supply reliability is improved, and the switching operation convenience, standardization and standardization are improved.
In order to achieve the above embodiments, the present disclosure further provides an automatic switching device of a standby power supply.
Fig. 4 is a block diagram of an automatic switching device of a standby power supply according to a third embodiment of the present disclosure.
As shown in fig. 4, the automatic switching device 400 for standby power may include:
a first switching module 410 for opening the first circuit breaker and closing the second circuit breaker of the second power supply in response to determining that the first power supply is in a fault state or an overhaul state;
a judging module 420, configured to disconnect the second circuit breaker and close a third circuit breaker of a third power supply if the second circuit breaker is closed successfully and the power supply system does not recover the power supply, or close the third circuit breaker of the third power supply if the second circuit breaker fails to close;
a detection module 430, configured to open the second circuit breaker and close the first circuit breaker in response to detecting that the first power supply is in a state of being restored to be available and receiving a switching instruction;
the second switch module 440 is configured to disconnect the first circuit breaker and close the third circuit breaker of the third power supply if the first circuit breaker is successfully closed and the power supply is not restored by the power system, or close the third circuit breaker of the third power supply if the first circuit breaker is failed to close.
Optionally, the first switching unit is further configured to:
in a preset switch refusing judging time period, if the bus voltage corresponding to the second power supply does not meet a preset condition, determining that the switching-on of the second circuit breaker fails, and alarming;
the second switch module is further configured to:
and in a preset switch refusing judging time period, if the bus voltage corresponding to the first power supply does not meet the preset condition, determining that the switching-on of the first circuit breaker fails, and alarming.
Optionally, the apparatus further includes:
and the protection module is used for determining that any circuit breaker is in a state of switching from on to off and putting into charging protection in a preset time period in response to determining that the jump relay contact is changed from on to off, or the current transformer detects that the current starts to increase from zero and is larger than a preset threshold value.
Optionally, the apparatus further includes:
and the alarm module is used for responding to a tripping command sent to any breaker, determining that the any breaker is not tripped within a preset switch refusal judgment time period, and alarming.
In the embodiment of the disclosure, first, in response to determining that a first power supply is in a fault state or an overhaul state, a first circuit breaker is opened, and a second circuit breaker of a second power supply is closed, then, in response to detecting that the first power supply is recovered to be in an available state and receiving a switching instruction, the second circuit breaker is opened, the first circuit breaker is closed, then, if the first circuit breaker is closed successfully and the power supply is not recovered by an electric system, the first circuit breaker is opened, and a third circuit breaker of a third power supply is closed, or if the first circuit breaker is closed failed, the third circuit breaker of the third power supply is closed. Therefore, besides ensuring the power supply reliability of the power plant system, the switching operation of the power plant system is facilitated, the switching operation efficiency is improved, the requirements of the hydropower plant under various conditions such as normal operation, accidents, overhaul and the like are met, and the power supply reliability of the power plant is improved, and the switching operation is convenient, standardized and normalized.
To achieve the above embodiments, the present disclosure further proposes a computer device including: the automatic switching-on method of the standby power supply provided by the previous embodiment of the disclosure is realized when the processor executes the program.
In order to implement the above-mentioned embodiments, the present disclosure also proposes a non-transitory computer-readable storage medium storing a computer program which, when executed by a processor, implements an automatic switching-on method of a backup power source as proposed in the foregoing embodiments of the present disclosure.
To achieve the above embodiments, the present disclosure also proposes a computer program product that, when executed by an instruction processor in the computer program product, performs the automatic switching-in method of the backup power source as proposed in the foregoing embodiments of the present disclosure.
Fig. 5 illustrates a block diagram of an exemplary computer device suitable for use in implementing embodiments of the present disclosure. The computer device 12 shown in fig. 5 is merely an example and should not be construed as limiting the functionality and scope of use of the disclosed embodiments.
As shown in FIG. 5, the computer device 12 is in the form of a general purpose computing device. Components of computer device 12 may include, but are not limited to: one or more processors or processing units 16, a system memory 28, a bus 18 that connects the various system components, including the system memory 28 and the processing units 16.
Bus 18 represents one or more of several types of bus structures, including a memory bus or memory controller, a peripheral bus, an accelerated graphics port, a processor, and a local bus using any of a variety of bus architectures. By way of example, and not limitation, such architectures include industry Standard architecture (Industry Standard Architecture; hereinafter ISA) bus, micro channel architecture (Micro Channel Architecture; hereinafter MAC) bus, enhanced ISA bus, video electronics standards Association (Video Electronics Standards Association; hereinafter VESA) local bus, and peripheral component interconnect (Peripheral Component Interconnection; hereinafter PCI) bus.
Computer device 12 typically includes a variety of computer system readable media. Such media can be any available media that is accessible by computer device 12 and includes both volatile and nonvolatile media, removable and non-removable media.
Memory 28 may include computer system readable media in the form of volatile memory, such as random access memory (Random Access Memory; hereinafter: RAM) 30 and/or cache memory 32. The computer device 12 may further include other removable/non-removable, volatile/nonvolatile computer system storage media. By way of example only, storage system 34 may be used to read from or write to non-removable, nonvolatile magnetic media (not shown in FIG. 5, commonly referred to as a "hard disk drive"). Although not shown in fig. 5, a magnetic disk drive for reading from and writing to a removable non-volatile magnetic disk (e.g., a "floppy disk"), and an optical disk drive for reading from or writing to a removable non-volatile optical disk (e.g., a compact disk read only memory (Compact Disc Read Only Memory; hereinafter CD-ROM), digital versatile read only optical disk (Digital Video Disc Read Only Memory; hereinafter DVD-ROM), or other optical media) may be provided. In such cases, each drive may be coupled to bus 18 through one or more data medium interfaces. Memory 28 may include at least one program product having a set (e.g., at least one) of program modules configured to carry out the functions of the various embodiments of the disclosure.
A program/utility 40 having a set (at least one) of program modules 42 may be stored in, for example, memory 28, such program modules 42 including, but not limited to, an operating system, one or more application programs, other program modules, and program data, each or some combination of which may include an implementation of a network environment. Program modules 42 generally perform the functions and/or methods in the embodiments described in this disclosure.
The computer device 12 may also communicate with one or more external devices 14 (e.g., keyboard, pointing device, display 24, etc.), one or more devices that enable a user to interact with the computer device 12, and/or any devices (e.g., network card, modem, etc.) that enable the computer device 12 to communicate with one or more other computing devices. Such communication may occur through an input/output (I/O) interface 22. Moreover, the computer device 12 may also communicate with one or more networks such as a local area network (Local Area Network; hereinafter LAN), a wide area network (Wide Area Network; hereinafter WAN) and/or a public network such as the Internet via the network adapter 20. As shown, network adapter 20 communicates with other modules of computer device 12 via bus 18. It should be appreciated that although not shown, other hardware and/or software modules may be used in connection with computer device 12, including, but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, data backup storage systems, and the like.
The processing unit 16 executes various functional applications and data processing by running programs stored in the system memory 28, for example, implementing the methods mentioned in the foregoing embodiments.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present disclosure, the meaning of "a plurality" is at least two, such as two, three, etc., unless explicitly specified otherwise.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and additional implementations are included within the scope of the preferred embodiment of the present disclosure in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the embodiments of the present disclosure.
Logic and/or steps represented in the flowcharts or otherwise described herein, e.g., a ordered listing of executable instructions for implementing logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). In addition, the computer readable medium may even be paper or other suitable medium on which the program is printed, as the program may be electronically captured, via, for instance, optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner, if necessary, and then stored in a computer memory.
It should be understood that portions of the present disclosure may be implemented in hardware, software, firmware, or a combination thereof. In the above-described embodiments, the various steps or methods may be implemented in software or firmware stored in a memory and executed by a suitable instruction execution system. As with the other embodiments, if implemented in hardware, may be implemented using any one or combination of the following techniques, as is well known in the art: discrete logic circuits having logic gates for implementing logic functions on data signals, application specific integrated circuits having suitable combinational logic gates, programmable Gate Arrays (PGAs), field Programmable Gate Arrays (FPGAs), and the like.
Those of ordinary skill in the art will appreciate that all or a portion of the steps carried out in the method of the above-described embodiments may be implemented by a program to instruct related hardware, where the program may be stored in a computer readable storage medium, and where the program, when executed, includes one or a combination of the steps of the method embodiments.
Furthermore, each functional unit in the embodiments of the present disclosure may be integrated in one processing module, or each unit may exist alone physically, or two or more units may be integrated in one module. The integrated modules may be implemented in hardware or in software functional modules. The integrated modules may also be stored in a computer readable storage medium if implemented in the form of software functional modules and sold or used as a stand-alone product.
The above-mentioned storage medium may be a read-only memory, a magnetic disk or an optical disk, or the like. Although embodiments of the present disclosure have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the present disclosure, and that variations, modifications, alternatives, and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the present disclosure.
Claims (4)
1. The automatic switching-on method of the standby power supply is characterized in that a section of bus is connected with three power supplies, wherein a first power supply, a second power supply and a third power supply are respectively connected to the bus through a first circuit breaker, a second circuit breaker and a third circuit breaker, and the automatic switching-on method comprises the following steps:
in response to determining that the first power source is in a fault state or an overhaul state, opening the first circuit breaker and closing a second circuit breaker of the second power source;
if the second circuit breaker is successfully switched on and the power supply system does not recover the power supply, the second circuit breaker is disconnected and a third circuit breaker of a third power supply is switched on, or if the second circuit breaker is failed to be switched on, the third circuit breaker of the third power supply is switched on;
in response to detecting that the first power supply is in a recovery available state and receiving a switching instruction, opening the second circuit breaker and closing the first circuit breaker;
if the first circuit breaker is successfully switched on and the power supply system does not recover the power supply, the first circuit breaker is disconnected and a third circuit breaker of a third power supply is switched on, or if the first circuit breaker is failed to be switched on, the third circuit breaker of the third power supply is switched on;
before the step of closing the third circuit breaker of the third power supply if the second circuit breaker fails, the method further comprises:
in a preset switch refusing judging time period, if the bus voltage corresponding to the second power supply does not meet a preset condition, determining that the second circuit breaker fails to close, immediately sending a second circuit breaker tripping instruction when the second circuit breaker is in a closing position, determining that the first circuit breaker and the second circuit breaker are tripped and no current exists, and after the bus is not pressed, closing a third circuit breaker by the closing time delay, and alarming;
before the step of closing the third circuit breaker of the third power supply if the first circuit breaker fails to close, the method further comprises: in a preset switch refusing judging time period, if the bus voltage corresponding to the first power supply does not meet the preset condition, determining that the first circuit breaker fails to close, immediately sending a first circuit breaker tripping instruction when the first circuit breaker is in a closing position, determining that the first circuit breaker and the second circuit breaker are tripped and no current exists, and after the bus is not pressed, closing a third circuit breaker by the closing time delay, and alarming;
and in response to determining that the jump relay contact is changed from closed to open, or the current transformer detects that the current starts to increase from zero and is larger than a preset threshold value, determining that any circuit breaker is in a state of being changed from open to closed, and putting into charge protection in a preset time period.
2. The method as recited in claim 1, further comprising:
and responding to the tripping command sent to any circuit breaker, and determining that the any circuit breaker is not tripped within a preset switch tripping judgment time period, and alarming.
3. The utility model provides an automatic switching device of stand-by power supply, its characterized in that, one section generating line is connected with three routes power, and wherein, first power, second power, third power are connected to the generating line through first circuit breaker, second circuit breaker, third circuit breaker respectively, include:
the first switch module is used for responding to the determination that the first power supply is in a fault state or an overhaul state, opening the first circuit breaker and closing the second circuit breaker of the second power supply;
the judging module is used for switching off the second circuit breaker and switching on a third circuit breaker of a third power supply if the second circuit breaker is switched on successfully and the power supply system does not recover the power supply, or switching on the third circuit breaker of the third power supply if the second circuit breaker is switched on failed;
the detection module is used for switching off the second circuit breaker and closing the first circuit breaker in response to the condition that the first power supply is detected to be in a usable state and a switching instruction is received;
the second switch module is used for switching off the first circuit breaker and switching on a third circuit breaker of a third power supply if the first circuit breaker is switched on successfully and the power supply system does not recover the power supply, or switching on the third circuit breaker of the third power supply if the first circuit breaker is switched on failed;
the judging module is further configured to:
in a preset switch refusing judging time period, if the bus voltage corresponding to the second power supply does not meet a preset condition, determining that the second circuit breaker fails to close, immediately sending a second circuit breaker tripping instruction when the second circuit breaker is in a closing position, determining that the first circuit breaker and the second circuit breaker are tripped and no current exists, and after the bus is not pressed, closing a third circuit breaker by the closing time delay, and alarming;
the second switch module is further configured to:
in a preset switch refusing judging time period, if the bus voltage corresponding to the first power supply does not meet the preset condition, determining that the first circuit breaker fails to close, immediately sending a first circuit breaker tripping instruction when the first circuit breaker is in a closing position, determining that the first circuit breaker and the second circuit breaker are tripped and no current exists, and after the bus is not pressed, closing a third circuit breaker by the closing time delay, and alarming;
and the protection module is used for determining that any circuit breaker is in a state of switching from on to off and putting into charging protection in a preset time period in response to determining that the jump relay contact is changed from on to off, or the current transformer detects that the current starts to increase from zero and is larger than a preset threshold value.
4. A device according to claim 3, further comprising:
and the alarm module is used for responding to a tripping command sent to any breaker, determining that the any breaker is not tripped within a preset switch refusal judgment time period, and alarming.
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