Spare power automatic switching logic simulation system and method

Abstract

The invention discloses a spare power automatic switching logic simulation system and method, and relates to the technical field of spare power automatic switching. The system is composed of a spare power automatic switching device, a simulation system power supply module, a protection information background simulation module, a first bus and first switch simulation module, a second bus and second switch simulation module, an interconnection switch simulation module and other switching value simulation modules. The invention further provides a simulation method. The spare power automatic switching device is combined and connected with each simulation module, the running conditions of the spare power automatic switching device and the control switch thereof are simulated, the simulation control of the spare power automatic switching logic is realized, a test platform is provided for the verification of the spare power automatic switching logic, risks and economic losses caused by direct application of the spare power automatic switching logic to field tests are reduced, and the test efficiency is improved. And the method can be used for practical operation training of operation and maintenance personnel, thereby reducing manpower training cost.

Description

Technical Field

[0001] This invention relates to the field of automatic switching technology, specifically to an automatic switching logic simulation system and method. Background Technology

[0002] The statements in this section are provided only as background information in connection with this disclosure and may not constitute prior art.

[0003] In power systems, medium and low voltage power supply networks such as 10kV and 400V often employ automatic transfer switching (ATS) devices to provide mutual backup for dual or multiple power sources, thereby improving power supply reliability. The core function of an ATS device is to automatically switch to a backup power source after the main power supply fails, based on preset logic, thus preventing power outages for users. However, the reliability and correctness of the ATS logic are directly related to the safe operation of the power system.

[0004] Currently, the industry's commonly used method for verifying automatic transfer switch (ATS) logic is as follows: After directly loading the designed ATS logic into the field device, the following two types of tests are conducted in a real power grid environment: Simulation test of the busbar without load: This involves briefly disconnecting the main power supply switch and observing whether the automatic transfer switch triggers the backup power supply to close. This type of test cannot simulate complex operating conditions such as voltage fluctuations and switch action sequences under real load conditions, resulting in insufficient logic verification.

[0005] Real-world busbar load testing: Directly verifying the automatic transfer switch logic under actual user power consumption scenarios. Although the test environment is realistic, flaws in the logic design (such as incorrect switch action timing or improper identification of interlocking conditions) may lead to serious accidents such as accidental switch closing or asynchronous parallel connection, causing equipment damage or even personal injury.

[0006] The shortcomings of existing technologies are mainly reflected in the following aspects: High risk: Directly relying on on-site testing to verify the logic, any logical error could trigger switch malfunctions, leading to serious accidents such as circuit breaker explosions and bus short circuits. Statistics show that in a certain region, equipment damage caused by faulty automatic transfer switch logic results in annual losses exceeding one million yuan.

[0007] High cost and long cycle: On-site testing requires power outage operation, which affects the reliability of power supply to users; if the test fails, the logic needs to be modified repeatedly and retested, resulting in project delays and a surge in labor costs.

[0008] Limitations of verification scenarios: Field tests cannot cover all possible fault scenarios (such as gradual power loss of the main power supply voltage, simultaneous power loss of multiple buses, etc.), and the completeness of logic verification is insufficient.

[0009] Lack of flexibility and repeatability: Field test conditions are limited by the actual power grid conditions, making it impossible to flexibly simulate extreme operating conditions (such as different voltage drop rates, protection blocking signal combinations, etc.), and the cost of repeated tests is extremely high.

[0010] Therefore, there is an urgent need for a simulation system that can safely and comprehensively verify standby self-starting logic in a laboratory environment, so as to eliminate design defects before the logic is loaded into the field device, reduce the risk of field testing, and improve verification efficiency and coverage. Summary of the Invention

[0011] The purpose of this invention is to address the problems existing in the prior art by proposing a backup automatic transfer switch (SATS) logic simulation system and method based on existing backup automatic transfer switch devices. During the development of new backup automatic transfer switch logic or the optimization of old logic, this system can be used to verify the correctness and feasibility of the backup automatic transfer switch logic design. After the backup automatic transfer switch logic is verified as qualified by this system, it can be used for field equipment testing, which will greatly improve the success rate of field testing and thus solve the above-mentioned problems.

[0012] The technical solution of the present invention is as follows: A backup automatic transfer logic simulation system includes: a backup automatic transfer device; The automatic transfer switch includes: a power supply module, a CPU module, an analog input module, a digital input module, and a digital output module. The analog input plug-in is connected to the first bus and the first switch analog module, the second bus and the second switch analog module respectively, and the analog input plug-in is used to acquire the voltage of the first bus and the second bus; The digital input module is connected to the first bus and the first switch simulation module, the second bus and the second switch simulation module, the tie switch simulation module, and other digital simulation modules respectively. The digital input module is used to receive the relevant status signals required by the backup automatic transfer logic. After loading the automatic transfer switch logic program, the CPU module performs logical judgment based on the voltage collected by the analog input module and the signal received by the digital input module, and issues the opening and closing commands to the digital output module respectively. The switch output module is connected to the first bus and the first switch simulation module, the second bus and the second switch simulation module, and the tie switch simulation module respectively, so as to realize the opening and closing of the first switch, the second switch, and the tie switch.

[0013] Furthermore, the backup automatic transfer device also includes: a communication plug-in; The communication plug-in is connected to the protection information background simulation module, which enables the protection information background to view the parameters, settings, and action signals of the automatic transfer switch.

[0014] Furthermore, the automatic transfer switch also includes: a power supply plug; The power supply plug is connected to the power module of the simulation system and is used to maintain the normal operation of the automatic transfer switch.

[0015] Furthermore, the power supply module of the simulation system includes: an AC / DC voltage converter; The power supply module of the simulation system is used to supply power to the power supply plug-in and various simulation modules.

[0016] Furthermore, the communication switch simulation module includes: The system includes an AC contactor for the tie switch, a time relay, a tie switch control button, and several intermediate relays and indicator lights. The AC contactor of the tie switch is used to simulate the tie switch connecting the first busbar and the second busbar; The switching output plug-in's opening and closing contacts, the coil of the AC contactor of the tie switch, the time relay, and the intermediate relay combine to form the action reset control circuit of the AC contactor of the tie switch, which is used to simulate the opening and closing of the tie switch. The instruction contact of the switch output plug-in is connected in parallel with the third trip button to directly control the reset of the AC contactor of the tie switch. The closing contact of the switch output plug-in is connected in parallel with a third closing button to directly control the operation of the AC contactor of the tie switch. Other intermediate relays are used to extend the contacts of the AC contactor of the tie switch; The action reset contact of the AC contactor of the tie switch is sent to the digital input module to simulate the open / closed position signal of the tie switch and control the indicator lights of different colors. The indicator lights are used to represent the open / closed signal of the tie switch.

[0017] Furthermore, the first busbar and first switch simulation module includes: Relay protection tester, first busbar AC contactor, first busbar main power supply voltage monitoring relay, time relay, first switch control button, and several intermediate relays and indicator lights; The first busbar AC contactor is used to simulate the first switch of the main power supply for the first busbar; The first voltage channel of the relay protection tester is connected to the upper end of the main contacts of the first busbar AC contactor to simulate the main power supply of the first busbar; the parallel tap of the first voltage channel of the relay protection tester is connected to the main power supply voltage monitoring relay of the first busbar; the voltage operating setting of the main power supply voltage monitoring relay of the first busbar is set to 80%U. N And connect the pressurized contact of the main power supply of the first busbar to the switch input plug-in; The lower ends of the main contacts of the first bus AC contactor are respectively connected to the upper ends of the main contacts of the tie switch AC contactor and the first group of voltage channels of the analog input module; the first group of voltage channels of the analog input module is used to acquire the voltage of the first bus, and its voltage setting value is set to 80%U. N The pressure setpoint is set at 25%U. N Simulate both the energized and unenergized states of the first busbar; The switch output plug-in's opening and closing command contacts, the coil of the first bus AC contactor, the time relay, and the intermediate relay combine to form the action reset control circuit of the first bus AC contactor, which is used to simulate the opening and closing of the first switch of the first bus main power supply. The tripping contact of the switch output plug-in is connected in parallel with the first tripping button to directly control the reset of the first bus AC contactor, and the closing contact of the switch output plug-in is connected in parallel with the first closing button to directly control the operation of the first bus AC contactor. Other intermediate relays are used to extend the contacts of the first bus AC contactor; The action reset contact of the first bus AC contactor is sent to the digital input module to simulate the open / closed position signal of the first switch and control the indicator lights of different colors. The indicator lights are used to represent the open / closed position of the first switch, the voltage of the first bus, and the voltage signal of the main power supply of the first bus.

[0018] Furthermore, the second busbar and second switch simulation module includes: The system includes a second busbar AC contactor, a second busbar main power supply voltage monitoring relay, a time relay, a second switch control button, and several intermediate relays and indicator lights. The second bus AC contactor is used to simulate the second switch of the main power supply for the second bus; The second voltage channel of the relay protection tester is connected to the upper end of the main contacts of the second busbar AC contactor to simulate the main power supply of the second busbar; the parallel tap of the second voltage channel of the relay protection tester is connected to the main power supply voltage monitoring relay of the second busbar, and the voltage-operated setting of the main power supply voltage monitoring relay of the second busbar is set to 80%U. N And connect the pressurized contact of the second bus main power supply to the switch input plug-in; The lower ends of the main contacts of the second bus AC contactor are respectively connected to the lower ends of the main contacts of the tie switch AC contactor and the second set of voltage channels of the analog input module; the second set of voltage channels of the analog input module is used to acquire the voltage of the second bus, and its voltage setting value is set to 80%U. N The pressure setpoint is set at 25%U. N Simulate the second busbar under both energized and unenergized conditions; The switching output plug-in's opening and closing command contacts, the coil of the second bus AC contactor, the time relay, and the intermediate relay combine to form the operation reset control circuit of the second bus AC contactor, used to simulate the opening and closing of the second switch of the second bus main power supply. The tripping contact of the switch output plug-in is connected in parallel with the second tripping button to directly control the reset of the first bus AC contactor, and the closing contact of the switch output plug-in is connected in parallel with the second closing button to directly control the operation of the second bus AC contactor. Other intermediate relays are used to extend the contacts of the second bus AC contactor; The reset contact of the second bus AC contactor is sent to the digital input module to simulate the open / closed position signal of the second switch and control the indicator lights of different colors. The indicator lights are used to represent the open / closed position of the second switch, the voltage of the second bus, and the voltage signal of the main power supply of the second bus.

[0019] Furthermore, the other switch quantity simulation modules include: The switch terminals are used to simulate the fully automatic, semi-automatic, and exit modes of the automatic transfer switch, to simulate the working, testing, and maintenance position signals of the first switch, the second switch, and the tie switch, and to simulate the protection action blocking signals of the first busbar and its main power supply, and the second busbar and its main power supply.

[0020] This invention also proposes a backup automatic transfer logic simulation method, based on the above-mentioned backup automatic transfer logic simulation system, comprising: Step S1: Power supply to the standby automatic transfer device and load the standby automatic transfer logic to be tested into the CPU module; Step S2: Power on the relay protection tester and set the first and second voltage channels of the relay protection tester to 80%U. N The above steps are followed, and the relay protection tester is started to maintain operation output, simulating that the main power supply voltage of the first bus and the second bus is normal. Step S3: Press the first closing button and the second closing button respectively. The first bus AC contactor and the second bus AC contactor will operate, and the first bus and the second bus will be energized and run, simulating the first bus and the second bus being powered by their respective main power supplies and operating in sections. Step S4: Set the switch terminals in other digital quantity simulation modules corresponding to the semi-automatic mode of the automatic transfer switch to closed, so as to set the automatic transfer switch to semi-automatic mode, and confirm that the first switch, the second switch, and the tie switch are in the working position and there is no protection action lockout signal. Step S5: Reduce the voltage of the first voltage channel of the relay protection tester to 25%U NThe following is a simulation of the first busbar and its main power supply losing power. After the automatic transfer logic delay judgment, the first busbar AC contactor resets, the tie switch AC contactor operates, and the first busbar is restored to power supply from the second busbar through the tie switch and regains power. This completes the simulation of the successful automatic transfer operation of the first busbar switching from main power supply to tie operation from the second busbar. Step S6: Close the switch terminals in other analog modules corresponding to the fully automatic mode of the automatic transfer switch, and open the switch terminals corresponding to the semi-automatic mode of the automatic transfer switch. Restore the voltage of the first voltage channel of the relay protection tester to 80%U. N The above process enables the main power supply of the first busbar to be energized. After the automatic transfer logic delay judgment, the AC contactor of the tie switch is reset, the AC contactor of the first busbar is activated, and the first busbar switches back to being powered by its own main power supply. This completes the simulation of the successful self-recovery operation of the first busbar from the tie operation of the second busbar to being powered by the main power supply of the first busbar. Step S7: Disconnect the switch terminals corresponding to the fully automatic mode of the automatic transfer switch in other switch quantity simulation modules, and close the switch terminals corresponding to the semi-automatic mode of the automatic transfer switch. Reduce the voltage of the second group of voltage channels of the relay protection tester to 25%U. N The following is a simulation of the second busbar and its main power supply losing power. After the automatic transfer logic delay judgment, the second busbar AC contactor resets, the tie switch AC contactor operates, and the second busbar is restored to power from the first busbar through the tie switch and regains power. This completes the simulation of the successful automatic transfer operation of the second busbar switching from main power supply to tie operation from the first busbar. Step S8: Close the switch terminals in other analog modules corresponding to the fully automatic mode of the automatic transfer switch, and open the switch terminals corresponding to the semi-automatic mode of the automatic transfer switch. Restore the voltage of the second voltage channel of the relay protection tester to 80%U. N The above process enables the main power supply of the second busbar to be energized. After the automatic transfer logic delay judgment, the AC contactor of the tie switch is reset, the AC contactor of the second busbar is activated, and the second busbar switches back to being powered by its own main power supply. This completes the simulation of the successful self-recovery operation of the second busbar from the tie operation of the first busbar to the main power supply of the second busbar.

[0021] Furthermore, it also includes: Step S9: If steps S5 and S7 can be completed normally based on steps S1, S2, S3, and S4, but steps S6 and S8 cannot be completed normally, then the self-recovery function of the standby automatic transfer device only takes effect when the standby automatic transfer device is fully automatic. Step S10: If, based on steps S1, S2, S3, and S4, the switch terminals in other switch quantity simulation modules corresponding to the fully automatic mode of the backup automatic transfer device are closed, and the switch terminals corresponding to the semi-automatic mode of the backup automatic transfer device are opened, steps S5, S6, S7, and S8 can be completed normally. Combined with step S9, it can be seen that the backup transfer function of the backup automatic transfer device is effective in both fully automatic and semi-automatic modes of the backup automatic transfer device. Step S11: Based on steps S1, S2, S3, and S4, set the automatic transfer switch to the off mode, and place the first switch, second switch, and tie switch in the test or maintenance position, while simultaneously closing the protection action blocking signal switch terminal of any bus main power supply; thereafter, if the backup and self-recovery processes described in steps S5, S6, S7, and S8 cannot be completed, report a backup or self-recovery failure signal for the automatic transfer switch. Step S12: After the simulation operation is completed, press the first trip button, the second trip button, and the third trip button respectively to reset the first bus AC contactor, the second bus AC contactor, and the tie switch AC contactor. After the automatic transfer device and the relay protection tester are turned off and powered off, disconnect the power supply.

[0022] Compared with existing technologies, the advantages of this invention are: 1. This invention can simulate the operation of a backup automatic transfer device, providing a test platform for the verification of backup automatic transfer logic, and reducing the risks and economic losses caused by directly using backup automatic transfer logic in field tests.

[0023] 2. This invention utilizes various simulation modules to simulate the operating status of the automatic transfer switch and its control switch, thereby realizing a simulation of the actual operation control system. It can be used for practical training of operation and maintenance personnel, reducing human resource training costs.

[0024] 3. This invention uses common electrical components such as AC contactors, intermediate relays, time relays, switch terminals, and indicator lights, as well as commonly used instruments in the protection industry, to create various simulation modules. The modules are simple in structure, low in manufacturing cost, and easy to operate. Attached Figure Description

[0025] Figure 1 This is a block diagram of a backup automatic switching logic simulation system; Figure 2 This is a schematic diagram of the structure of an electronic device provided in an embodiment of the present invention. Detailed Implementation

[0026] It should be noted that relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0027] The features and performance of the present invention will be further described in detail below with reference to embodiments.

[0028] Example 1 In power systems, 10kV and 400V power supply systems often employ automatic transfer switch (ATS) to control dual or multiple power sources as backups, ensuring power supply reliability and preventing power outages for users. These ATS devices must be loaded with pre-designed ATS logic and pass on-site ATS tests before operation. Currently, it's common practice to directly load the designed ATS logic into the on-site ATS device, conducting either a simulated ATS test with the busbar unloaded or a real ATS test with the busbar loaded. If the loaded ATS logic is flawed, it can lead to risks such as accidental switching on the field, causing serious damage to on-site equipment, increasing power construction costs, and directly impacting the construction schedule.

[0029] Therefore, this embodiment designs a backup automatic transfer logic simulation system based on the existing backup automatic transfer device. During the development of new backup automatic transfer logic or the optimization of old logic, the system can be used to verify the correctness and feasibility of the backup automatic transfer logic design. After the backup automatic transfer logic is verified by the system, it can be used for field equipment testing, which will greatly improve the success rate of field testing.

[0030] Please see Figure 1 A backup automatic transfer logic simulation system includes: a backup automatic transfer device; The automatic transfer switch includes: a power supply module, a CPU module, an analog input module, a digital input module, and a digital output module. The analog input plug-in is connected to the first bus and the first switch analog module, the second bus and the second switch analog module respectively, and the analog input plug-in is used to acquire the voltage of the first bus and the second bus; The digital input module is connected to the first bus and the first switch simulation module, the second bus and the second switch simulation module, the tie switch simulation module, and other digital simulation modules respectively. The digital input module is used to receive the relevant status signals required by the backup automatic transfer logic. After loading the automatic transfer switch logic program, the CPU module performs logical judgment based on the voltage collected by the analog input module and the signal received by the digital input module, and issues the opening and closing commands to the digital output module respectively. The switch output module is connected to the first bus and the first switch simulation module, the second bus and the second switch simulation module, and the tie switch simulation module respectively, so as to realize the opening and closing of the first switch, the second switch, and the tie switch.

[0031] In this embodiment, specifically, the backup automatic transfer device further includes: a communication plug-in; The communication plug-in is connected to the protection information background simulation module, which allows the protection information background to view information such as the parameters, settings, and action signals of the automatic transfer switch.

[0032] In this embodiment, specifically, the backup automatic transfer device further includes: a power supply plug; The power supply plug is connected to the power module of the simulation system and is used to maintain the normal operation of the automatic transfer switch.

[0033] In this embodiment, specifically, the simulation system power supply module includes: an AC / DC voltage converter; The power supply module of the simulation system is used to supply power to the power supply plug-in and various simulation modules.

[0034] In this embodiment, specifically, the handover switch simulation module includes: The system includes an AC contactor for the tie switch, a time relay, a tie switch control button, and several intermediate relays and indicator lights. The AC contactor of the tie switch is used to simulate the tie switch connecting the first busbar and the second busbar; The switching output plug-in's opening and closing contacts, the coil of the AC contactor of the tie switch, the time relay, and the intermediate relay combine to form the action reset control circuit of the AC contactor of the tie switch, which is used to simulate the opening and closing of the tie switch. The instruction contact of the switch output plug-in is connected in parallel with the third trip button to directly control the reset of the AC contactor of the tie switch. The closing contact of the switch output plug-in is connected in parallel with a third closing button to directly control the operation of the AC contactor of the tie switch. Other intermediate relays are used to extend the contacts of the AC contactor of the tie switch; The action reset contact of the AC contactor of the tie switch is sent to the digital input module to simulate the open / closed position signal of the tie switch and control the indicator lights of different colors. The indicator lights are used to represent the open / closed signal of the tie switch.

[0035] In this embodiment, specifically, the first busbar and first switch simulation module includes: Relay protection tester, first busbar AC contactor, first busbar main power supply voltage monitoring relay, time relay, first switch control button, and several intermediate relays and indicator lights; The first busbar AC contactor is used to simulate the first switch of the main power supply for the first busbar; The first voltage channel of the relay protection tester is connected to the upper end of the main contacts of the first busbar AC contactor to simulate the main power supply of the first busbar; the parallel tap of the first voltage channel of the relay protection tester is connected to the main power supply voltage monitoring relay of the first busbar; the voltage operating setting of the main power supply voltage monitoring relay of the first busbar is set to 80%U. N And connect the pressurized contact of the main power supply of the first busbar to the switch input plug-in; The lower ends of the main contacts of the first bus AC contactor are respectively connected to the upper ends of the main contacts of the tie switch AC contactor and the first group of voltage channels of the analog input module; the first group of voltage channels of the analog input module is used to acquire the voltage of the first bus, and its voltage setting value is set to 80%U. N The pressure setpoint is set at 25%U. N Simulate both the energized and unenergized states of the first busbar; The switch output plug-in's opening and closing command contacts, the coil of the first bus AC contactor, the time relay, and the intermediate relay combine to form the action reset control circuit of the first bus AC contactor, which is used to simulate the opening and closing of the first switch of the first bus main power supply. The tripping contact of the switch output plug-in is connected in parallel with the first tripping button to directly control the reset of the first bus AC contactor, and the closing contact of the switch output plug-in is connected in parallel with the first closing button to directly control the operation of the first bus AC contactor. Other intermediate relays are used to extend the contacts of the first bus AC contactor; The action reset contact of the first bus AC contactor is sent to the digital input module to simulate the open / closed position signal of the first switch and control the indicator lights of different colors. The indicator lights are used to represent the open / closed position of the first switch, the voltage of the first bus, and the voltage signal of the main power supply of the first bus.

[0036] In this embodiment, specifically, the second busbar and second switch simulation module includes: The system includes a second busbar AC contactor, a second busbar main power supply voltage monitoring relay, a time relay, a second switch control button, and several intermediate relays and indicator lights. The second bus AC contactor is used to simulate the second switch of the main power supply for the second bus; The second voltage channel of the relay protection tester is connected to the upper end of the main contacts of the second busbar AC contactor to simulate the main power supply of the second busbar; the parallel tap of the second voltage channel of the relay protection tester is connected to the main power supply voltage monitoring relay of the second busbar, and the voltage-operated setting of the main power supply voltage monitoring relay of the second busbar is set to 80%U. N And connect the pressurized contact of the second bus main power supply to the switch input plug-in; The lower ends of the main contacts of the second bus AC contactor are respectively connected to the lower ends of the main contacts of the tie switch AC contactor and the second set of voltage channels of the analog input module; the second set of voltage channels of the analog input module is used to acquire the voltage of the second bus, and its voltage setting value is set to 80%U. N The pressure setpoint is set at 25%U. N Simulate the second busbar under both energized and unenergized conditions; The switching output plug-in's opening and closing command contacts, the coil of the second bus AC contactor, the time relay, and the intermediate relay combine to form the operation reset control circuit of the second bus AC contactor, used to simulate the opening and closing of the second switch of the second bus main power supply. The tripping contact of the switch output plug-in is connected in parallel with the second tripping button to directly control the reset of the first bus AC contactor, and the closing contact of the switch output plug-in is connected in parallel with the second closing button to directly control the operation of the second bus AC contactor. Other intermediate relays are used to extend the contacts of the second bus AC contactor; The reset contact of the second bus AC contactor is sent to the digital input module to simulate the open / closed position signal of the second switch and control the indicator lights of different colors. The indicator lights are used to represent the open / closed position of the second switch, the voltage of the second bus, and the voltage signal of the main power supply of the second bus.

[0037] In this embodiment, specifically, the other switch quantity simulation modules include: The switch terminals are used to simulate the fully automatic, semi-automatic, and exit modes of the automatic transfer switch, to simulate the working, testing, and maintenance position signals of the first switch, the second switch, and the tie switch, and to simulate the protection action blocking signals of the first busbar and its main power supply, and the second busbar and its main power supply.

[0038] Example 2 Example 2, based on the backup automatic transfer logic simulation system proposed in Example 1, also proposes a backup automatic transfer logic simulation method, including: Step S1: Power supply to the standby automatic transfer device and load the standby automatic transfer logic to be tested into the CPU module; that is, take 220V AC power to power the simulation system power module, power on the standby automatic transfer device, and load the standby automatic transfer logic to be tested into the CPU module through a dedicated debugging computer. Step S2: Power on the relay protection tester and set the first and second voltage channels of the relay protection tester to 80%U. N The above steps are followed, and the relay protection tester is started and maintained in operation to simulate normal main power supply voltages for the first and second busbars; that is, 220V AC power is supplied to the relay protection tester, and the first and second voltage channels of the relay protection tester are set to 80%U. N The above steps are followed, and the relay protection tester is started to maintain operation output, simulating that the main power supply voltage of the first bus and the second bus is normal. Step S3: Press the first closing button and the second closing button respectively. The first bus AC contactor and the second bus AC contactor will operate, and the first bus and the second bus will be energized and run, simulating the first bus and the second bus being powered by their respective main power supplies and operating in sections. Step S4: Set the switch terminals in other digital quantity simulation modules corresponding to the semi-automatic mode of the automatic transfer switch to closed, so as to set the automatic transfer switch to semi-automatic mode, and confirm that the first switch, the second switch, and the tie switch are in the working position and there is no protection action lockout signal. Step S5: Reduce the voltage of the first voltage channel of the relay protection tester to 25%U N The following is a simulation of the first busbar and its main power supply losing power. After the automatic transfer logic delay judgment, the first busbar AC contactor resets, the tie switch AC contactor operates, and the first busbar is restored to power supply from the second busbar through the tie switch and regains power. This completes the simulation of the successful automatic transfer operation of the first busbar switching from main power supply to tie operation from the second busbar. Step S6: Close the switch terminals in other analog modules corresponding to the fully automatic mode of the automatic transfer switch, and open the switch terminals corresponding to the semi-automatic mode of the automatic transfer switch. Restore the voltage of the first voltage channel of the relay protection tester to 80%U. N The above process enables the main power supply of the first busbar to be energized. After the automatic transfer logic delay judgment, the AC contactor of the tie switch is reset, the AC contactor of the first busbar is activated, and the first busbar switches back to being powered by its own main power supply. This completes the simulation of the successful self-recovery operation of the first busbar from the tie operation of the second busbar to being powered by the main power supply of the first busbar. Step S7: Disconnect the switch terminals corresponding to the fully automatic mode of the automatic transfer switch in other switch quantity simulation modules, and close the switch terminals corresponding to the semi-automatic mode of the automatic transfer switch. Reduce the voltage of the second group of voltage channels of the relay protection tester to 25%U.N The following is a simulation of the second busbar and its main power supply losing power. After the automatic transfer logic delay judgment, the second busbar AC contactor resets, the tie switch AC contactor operates, and the second busbar is restored to power from the first busbar through the tie switch and regains power. This completes the simulation of the successful automatic transfer operation of the second busbar switching from main power supply to tie operation from the first busbar. Step S8: Close the switch terminals in other analog modules corresponding to the fully automatic mode of the automatic transfer switch, and open the switch terminals corresponding to the semi-automatic mode of the automatic transfer switch. Restore the voltage of the second voltage channel of the relay protection tester to 80%U. N The above process enables the main power supply of the second busbar to be energized. After the automatic transfer logic delay judgment, the AC contactor of the tie switch is reset, the AC contactor of the second busbar is activated, and the second busbar switches back to being powered by its own main power supply. This completes the simulation of the successful self-recovery operation of the second busbar from the tie operation of the first busbar to being powered by the main power supply of the second busbar. Step S9: If steps S5 and S7 can be completed normally based on steps S1, S2, S3, and S4, but steps S6 and S8 cannot be completed normally, then the self-recovery function of the standby automatic transfer device only takes effect when the standby automatic transfer device is fully automatic. Step S10: If, based on steps S1, S2, S3, and S4, the switch terminals in other switch quantity simulation modules corresponding to the fully automatic mode of the backup automatic transfer device are closed, and the switch terminals corresponding to the semi-automatic mode of the backup automatic transfer device are opened, steps S5, S6, S7, and S8 can be completed normally. Combined with step S9, it can be seen that the backup transfer function of the backup automatic transfer device is effective in both fully automatic and semi-automatic modes of the backup automatic transfer device. Step S11: Based on steps S1, S2, S3, and S4, set the automatic transfer switch to the off mode, and place the first switch, second switch, and tie switch in the test or maintenance position, while simultaneously closing the protection action blocking signal switch terminal of any bus main power supply; thereafter, if the backup and self-recovery processes described in steps S5, S6, S7, and S8 cannot be completed, report a backup or self-recovery failure signal for the automatic transfer switch. Step S12: After the simulation operation is completed, press the first trip button, the second trip button, and the third trip button respectively to reset the first bus AC contactor, the second bus AC contactor, and the tie switch AC contactor. After the automatic transfer device and the relay protection tester are powered off, disconnect the power supply; that is, disconnect the 220V AC power of the simulation system power module and the relay protection tester.

[0039] In this embodiment, it should also be noted that if the backup automatic transfer device malfunctions during the simulation operation, the backup automatic transfer logic can be modified according to the action indication signals of each simulation module before proceeding with steps S1-S11 for simulation operation.

[0040] In this embodiment, it should also be noted that during the simulation operation, the parameters, settings, and action signals of the backup automatic transfer device can be viewed through the protection information background simulation module.

[0041] Based on the same technical concept, embodiments of the present invention also provide an electronic device that can implement the backup automatic switching logic simulation method flow provided in the above embodiments of the present invention. In one embodiment, the electronic device can be a server, a terminal device, or other electronic devices. Figure 2 As shown, the electronic device may include: At least one processor and a memory connected to the at least one processor. In this embodiment of the invention, the specific connection medium between the processor and the memory is not limited. Figure 2 The example used is the connection between the processor and memory via a bus. The bus... Figure 2 The connections between other components are indicated by thick lines and are for illustrative purposes only, not as limiting information. Buses can be divided into address buses, data buses, control buses, etc., but for ease of representation, [the specific bus type is not shown here]. Figure 2 The processor is represented by a single thick line, but this does not imply that there is only one bus or one type of bus. Alternatively, a processor can also be called a controller; there are no restrictions on the name.

[0042] In this embodiment of the invention, the memory stores instructions executable by at least one processor. By executing the instructions stored in the memory, the at least one processor can perform a backup automatic switching logic simulation method as described above. The processor can implement... Figure 2 The functions of each module in the device shown.

[0043] The processor is the control center of the device. It can connect to various parts of the control device through various interfaces and lines. By running or executing instructions stored in memory and calling data stored in memory, it can monitor the device's various functions and process data, thereby enabling overall monitoring of the device.

[0044] In an alternative design, the processor may include one or more processing units. The processor may integrate an application processor and a modem processor, wherein the application processor primarily handles the operating system, user interface, and applications, while the modem processor primarily handles wireless communication. It is understood that the modem processor may also not be integrated into the processor. In some embodiments, the processor and memory may be implemented on the same chip; in some embodiments, they may also be implemented separately on separate chips.

[0045] The processor can be a general-purpose processor, such as a CPU, digital signal processor, application-specific integrated circuit, field-programmable gate array or other programmable logic device, discrete gate or transistor logic device, or discrete hardware component, capable of implementing or executing the methods, steps, and logic block diagrams disclosed in the embodiments of this invention. The general-purpose processor can be a microprocessor or any conventional processor. The steps of the automatic switching logic simulation method disclosed in the embodiments of this invention can be directly manifested as execution by a hardware processor, or execution by a combination of hardware and software modules within the processor.

[0046] Memory, as a non-volatile computer-readable storage medium, can be used to store non-volatile software programs, non-volatile computer-executable programs, and modules. Memory can include at least one type of storage medium, such as flash memory, hard disk, multimedia card, card-type memory, random access memory (RAM), static random access memory (SRAM), programmable read-only memory (PROM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), magnetic memory, magnetic disk, optical disk, etc. Memory is any other medium capable of carrying or storing desired program code in the form of instructions or data structures, and accessible by a computer, but is not limited thereto. In embodiments of the present invention, memory can also be a circuit or any other device capable of implementing storage functions, used to store program instructions and / or data.

[0047] By designing and programming the processor, the code corresponding to the automatic switching logic simulation method described in the foregoing embodiments can be embedded into the chip, enabling the chip to execute the steps of the method described in the foregoing embodiments during operation. How to design and program the processor is a technique well-known to those skilled in the art and will not be elaborated upon here.

[0048] Based on the same inventive concept, embodiments of the present invention also provide a storage medium storing computer instructions that, when executed on a computer, cause the computer to perform a backup self-starting logic simulation method described above.

[0049] In some alternative embodiments, the present invention also provides that various aspects of the automatic switchback logic simulation method can also be implemented in the form of a program product, which includes program code that, when the program product is run on a device, causes the control device to perform the steps in the automatic switchback logic simulation method according to various exemplary embodiments of the present invention described above.

[0050] It should be noted that although several units or sub-units of the apparatus have been mentioned in the detailed description above, this division is merely exemplary and not mandatory. In fact, according to embodiments of the invention, the features and functions of two or more units described above can be embodied in one unit. Conversely, the features and functions of one unit described above can be further divided and embodied by multiple units. Furthermore, although the operation of the method of the invention is described in a specific order in the drawings, this does not require or imply that these operations must be performed in that specific order, or that all the operations shown must be performed to achieve the desired result. Additionally or alternatively, certain steps may be omitted, multiple steps may be combined into one step, and / or one step may be broken down into multiple steps.

[0051] Those skilled in the art will understand that embodiments of the present invention can be provided as methods, systems, or computer program products. Therefore, the present invention can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention can take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0052] This invention is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a server, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0053] Program code for performing the operations of this invention can be written using any combination of one or more programming languages, including object-oriented programming languages ​​such as Java and C++, as well as conventional procedural programming languages ​​such as C or similar languages. The program code can be executed entirely on the user's computing device, partially on the user's device, as a standalone software package, partially on the user's computing device and partially on a remote computing device, or entirely on a remote computing device or server.

[0054] In cases involving remote computing devices, the remote computing device can be connected to the user's computing device via any type of network, including a local area network (LAN) or a wide area network (WAN), or it can be connected to an external computing device (e.g., via the Internet using an Internet service provider).

[0055] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0056] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0057] The embodiments described above merely illustrate specific implementation methods of this application, and while the descriptions are detailed and specific, they should not be construed as limiting the scope of protection of this application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the technical solution of this application, and these modifications and improvements all fall within the scope of protection of this application.

[0058] This background section is provided to generally present the context of the invention. The work of the currently named inventors, the work to the extent described in this background section, and aspects of this section that did not constitute prior art at the time of application are neither expressly nor impliedly acknowledged as prior art to the invention.

Claims

1. A backup automatic switching logic simulation system, characterized in that, include: Equipped with automatic transfer device; The automatic transfer switch includes: a power supply module, a CPU module, an analog input module, a digital input module, and a digital output module. The analog input plug-in is connected to the first bus and the first switch analog module, the second bus and the second switch analog module respectively, and the analog input plug-in is used to acquire the voltage of the first bus and the second bus; The digital input module is connected to the first bus and the first switch simulation module, the second bus and the second switch simulation module, the tie switch simulation module, and other digital simulation modules respectively. The digital input module is used to receive the relevant status signals required by the backup automatic transfer logic. After loading the automatic transfer switch logic program, the CPU module performs logical judgment based on the voltage collected by the analog input module and the signal received by the digital input module, and issues the opening and closing commands to the digital output module respectively. The switch output module is connected to the first bus and the first switch simulation module, the second bus and the second switch simulation module, and the tie switch simulation module respectively, so as to realize the opening and closing of the first switch, the second switch, and the tie switch.

2. The automatic switching logic simulation system according to claim 1, characterized in that, The backup automatic transfer device also includes: a communication plug-in; The communication plug-in is connected to the protection information background simulation module, which enables the protection information background to view the parameters, settings, and action signals of the automatic transfer switch.

3. The automatic switching logic simulation system according to claim 2, characterized in that, The backup automatic transfer device further includes: a power supply plug; The power supply plug is connected to the power module of the simulation system and is used to maintain the normal operation of the automatic transfer switch.

4. The automatic switching logic simulation system according to claim 3, characterized in that, The power supply module of the simulation system includes: an AC / DC voltage converter; The power supply module of the simulation system is used to supply power to the power supply plug-in and various simulation modules.

5. The backup automatic switching logic simulation system according to claim 4, characterized in that, The handover switch simulation module includes: The system includes an AC contactor for the tie switch, a time relay, a tie switch control button, and several intermediate relays and indicator lights. The AC contactor of the tie switch is used to simulate the tie switch connecting the first busbar and the second busbar; The switching output plug-in's opening and closing contacts, the coil of the AC contactor of the tie switch, the time relay, and the intermediate relay combine to form the action reset control circuit of the AC contactor of the tie switch, which is used to simulate the opening and closing of the tie switch. The instruction contact of the switch output plug-in is connected in parallel with the third trip button to directly control the reset of the AC contactor of the tie switch. The closing contact of the switch output plug-in is connected in parallel with a third closing button to directly control the operation of the AC contactor of the tie switch. Other intermediate relays are used to extend the contacts of the AC contactor of the tie switch; The action reset contact of the AC contactor of the tie switch is sent to the digital input module to simulate the open / closed position signal of the tie switch and control the indicator lights of different colors. The indicator lights are used to represent the open / closed signal of the tie switch.

6. The automatic switching logic simulation system according to claim 5, characterized in that, The first busbar and first switch simulation module includes: Relay protection tester, first busbar AC contactor, first busbar main power supply voltage monitoring relay, time relay, first switch control button, and several intermediate relays and indicator lights; The first busbar AC contactor is used to simulate the first switch of the main power supply for the first busbar; The first voltage channel of the relay protection tester is connected to the upper end of the main contacts of the first busbar AC contactor to simulate the main power supply of the first busbar; the parallel tap of the first voltage channel of the relay protection tester is connected to the main power supply voltage monitoring relay of the first busbar; the voltage operating setting of the main power supply voltage monitoring relay of the first busbar is set to 80%U. N And connect the pressurized contact of the main power supply of the first busbar to the switch input plug-in; The lower ends of the main contacts of the first bus AC contactor are respectively connected to the upper ends of the main contacts of the tie switch AC contactor and the first group of voltage channels of the analog input module; the first group of voltage channels of the analog input module is used to acquire the voltage of the first bus, and its voltage setting value is set to 80%U. N The pressure setpoint is set at 25%U. N Simulate both the energized and unenergized states of the first busbar; The switch output plug-in's opening and closing command contacts, the coil of the first bus AC contactor, the time relay, and the intermediate relay combine to form the action reset control circuit of the first bus AC contactor, which is used to simulate the opening and closing of the first switch of the first bus main power supply. The tripping contact of the switch output plug-in is connected in parallel with the first tripping button to directly control the reset of the first bus AC contactor, and the closing contact of the switch output plug-in is connected in parallel with the first closing button to directly control the operation of the first bus AC contactor. Other intermediate relays are used to extend the contacts of the first bus AC contactor; The action reset contact of the first bus AC contactor is sent to the digital input module to simulate the open / closed position signal of the first switch and control the indicator lights of different colors. The indicator lights are used to represent the open / closed position of the first switch, the voltage of the first bus, and the voltage signal of the main power supply of the first bus.

7. The backup automatic switching logic simulation system according to claim 6, characterized in that, The second busbar and second switch simulation module includes: The system includes a second busbar AC contactor, a second busbar main power supply voltage monitoring relay, a time relay, a second switch control button, and several intermediate relays and indicator lights. The second bus AC contactor is used to simulate the second switch of the main power supply for the second bus; The second voltage channel of the relay protection tester is connected to the upper end of the main contacts of the second busbar AC contactor to simulate the main power supply of the second busbar; the parallel tap of the second voltage channel of the relay protection tester is connected to the main power supply voltage monitoring relay of the second busbar, and the voltage-operated setting of the main power supply voltage monitoring relay of the second busbar is set to 80%U. N And connect the pressurized contact of the second bus main power supply to the switch input plug-in; The lower ends of the main contacts of the second bus AC contactor are respectively connected to the lower ends of the main contacts of the tie switch AC contactor and the second set of voltage channels of the analog input module; the second set of voltage channels of the analog input module is used to acquire the voltage of the second bus, and its voltage setting value is set to 80%U. N The pressure setpoint is set at 25%U. N Simulate the second busbar under both energized and unenergized conditions; The switching output plug-in's opening and closing command contacts, the coil of the second bus AC contactor, the time relay, and the intermediate relay combine to form the operation reset control circuit of the second bus AC contactor, used to simulate the opening and closing of the second switch of the second bus main power supply. The tripping contact of the switch output plug-in is connected in parallel with the second tripping button to directly control the reset of the first bus AC contactor, and the closing contact of the switch output plug-in is connected in parallel with the second closing button to directly control the operation of the second bus AC contactor. Other intermediate relays are used to extend the contacts of the second bus AC contactor; The reset contact of the second bus AC contactor is sent to the digital input module to simulate the open / closed position signal of the second switch and control the indicator lights of different colors. The indicator lights are used to represent the open / closed position of the second switch, the voltage of the second bus, and the voltage signal of the main power supply of the second bus.

8. The automatic switching logic simulation system according to claim 7, characterized in that, The other switch quantity simulation modules include: The switch terminals are used to simulate the fully automatic, semi-automatic, and exit modes of the automatic transfer switch, to simulate the working, testing, and maintenance position signals of the first switch, the second switch, and the tie switch, and to simulate the protection action blocking signals of the first busbar and its main power supply, and the second busbar and its main power supply.

9. A simulation method for automatic switching logic, characterized in that, A backup automatic switching logic simulation system according to any one of claims 1-9 includes: Step S1: Power supply to the standby automatic transfer device and load the standby automatic transfer logic to be tested into the CPU module; Step S2: Power on the relay protection tester and set the first and second voltage channels of the relay protection tester to 80%U. N The above steps are followed, and the relay protection tester is started to maintain operation output, simulating that the main power supply voltage of the first bus and the second bus is normal. Step S3: Press the first closing button and the second closing button respectively. The first bus AC contactor and the second bus AC contactor will operate, and the first bus and the second bus will be energized and run, simulating the first bus and the second bus being powered by their respective main power supplies and operating in sections. Step S4: Set the switch terminals in other digital quantity simulation modules corresponding to the semi-automatic mode of the automatic transfer switch to closed, so as to set the automatic transfer switch to semi-automatic mode, and confirm that the first switch, the second switch, and the tie switch are in the working position and there is no protection action lockout signal. Step S5: Reduce the voltage of the first voltage channel of the relay protection tester to 25%U. N The following is a simulation of the first busbar and its main power supply losing power. After the automatic transfer logic delay judgment, the first busbar AC contactor resets, the tie switch AC contactor operates, and the first busbar is restored to power supply from the second busbar through the tie switch and regains power. This completes the simulation of the successful automatic transfer operation of the first busbar switching from main power supply to tie operation from the second busbar. Step S6: Close the switch terminals in other analog modules corresponding to the fully automatic mode of the automatic transfer switch, and open the switch terminals corresponding to the semi-automatic mode of the automatic transfer switch. Restore the voltage of the first voltage channel of the relay protection tester to 80%U. N The above process enables the main power supply of the first busbar to be energized. After the automatic transfer logic delay judgment, the AC contactor of the tie switch is reset, the AC contactor of the first busbar is activated, and the first busbar switches back to being powered by its own main power supply. This completes the simulation of the successful self-recovery operation of the first busbar from the tie operation of the second busbar to being powered by the main power supply of the first busbar. Step S7: Disconnect the switch terminals corresponding to the fully automatic mode of the automatic transfer switch in other switch quantity simulation modules, and close the switch terminals corresponding to the semi-automatic mode of the automatic transfer switch. Reduce the voltage of the second group of voltage channels of the relay protection tester to 25%U. N The following is a simulation of the second busbar and its main power supply losing power. After the automatic transfer logic delay judgment, the second busbar AC contactor resets, the tie switch AC contactor operates, and the second busbar is restored to power from the first busbar through the tie switch and regains power. This completes the simulation of the successful automatic transfer operation of the second busbar switching from main power supply to tie operation from the first busbar. Step S8: Close the switch terminals in other analog modules corresponding to the fully automatic mode of the automatic transfer switch, and open the switch terminals corresponding to the semi-automatic mode of the automatic transfer switch. Restore the voltage of the second voltage channel of the relay protection tester to 80%U. N The above process enables the main power supply of the second busbar to be energized. After the automatic transfer logic delay judgment, the AC contactor of the tie switch is reset, the AC contactor of the second busbar is activated, and the second busbar switches back to being powered by its own main power supply. This completes the simulation of the successful self-recovery operation of the second busbar from the tie operation of the first busbar to the main power supply of the second busbar.

10. The backup automatic switching logic simulation method according to claim 9, characterized in that, Also includes: Step S9: If steps S5 and S7 can be completed normally based on steps S1, S2, S3, and S4, but steps S6 and S8 cannot be completed normally, then the self-recovery function of the standby automatic transfer device only takes effect when the standby automatic transfer device is fully automatic. Step S10: If, based on steps S1, S2, S3, and S4, the switch terminals in other switch quantity simulation modules corresponding to the fully automatic mode of the backup automatic transfer device are closed, and the switch terminals corresponding to the semi-automatic mode of the backup automatic transfer device are opened, steps S5, S6, S7, and S8 can be completed normally. Combined with step S9, it can be seen that the backup transfer function of the backup automatic transfer device is effective in both fully automatic and semi-automatic modes of the backup automatic transfer device. Step S11: Based on steps S1, S2, S3, and S4, set the automatic transfer switch to the off mode, and place the first switch, second switch, and tie switch in the test or maintenance position, while simultaneously closing the protection action blocking signal switch terminal of any bus main power supply; thereafter, if the backup and self-recovery processes described in steps S5, S6, S7, and S8 cannot be completed, report a backup or self-recovery failure signal for the automatic transfer switch. Step S12: After the simulation operation is completed, press the first trip button, the second trip button, and the third trip button respectively to reset the first bus AC contactor, the second bus AC contactor, and the tie switch AC contactor. After the automatic transfer device and the relay protection tester are turned off and powered off, disconnect the power supply.

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