TWM638850U - Capacitor tripping device with automatic closing function - Google Patents

Abstract

The present invention is a capacitor tripping device with automatic reclosing function, which integrates the capacitor tripping device and the automatic reclosing device into one, so as to solve the problem of multiple automatic reclosing devices in a power distribution system, resulting in the repeated configuration of function. It can be used to improve the automatic recloser when there is no backup power supply in the event of a power failure, resulting in the inability to perform safe power recovery operations in accordance with the set order during power recovery. The present invention is effective improve the use space, and ensure that the main circuit breaker and shunt circuit breaker of the entire power circuit have the function of automatic closing in a safe sequence.

Description

Capacitor tripping with automatic reclosing device

This creation has an automatic reclosing device for the capacitor tripping device, which integrates the capacitor tripping device and the automatic reclosing device to solve the problem that there are multiple automatic reclosing devices in a power distribution system. There is no backup power supply for the circuit breaker during a power outage. When the power is restored, the automatic circuit breaker causes the main circuit breaker panel to be closed under load and cannot be closed in accordance with the set sequence. This creation can improve the use space and make the The function of automatic reclosing of the main circuit breaker and the branch circuit breaker of the entire power circuit in sequence.

In the known technology, the high-voltage circuit breaker panel has three functions, power ON, start-off OFF, and trip trip. Generally speaking, there is a main circuit breaker in the high-voltage circuit breaker panel that is responsible for the above three functions of the power circuit system. There must be a working power supply to actuate the closing coil of the circuit breaker. When the power is to be cut off or a fault occurs, there must be a working power supply to actuate the tripping coil of the circuit breaker. High-voltage circuit breakers generally have another spring energy storage actuating coil, which is divided into There are two types of energy storage after power on and off and energy storage after power-on. Generally speaking, the closing coil and energy storage coil of the high-voltage circuit breaker supply power after the power circuit is energized, so there will be nothing under normal conditions. If there is a power supply source in the power circuit system, there is no problem with the action of the tripping coil, but if the power circuit system such as the secondary side power feeder of the high voltage circuit breaker has a short circuit accident, it will cause the second voltage ratio of the high voltage circuit breaker panel. Second-rate The side voltage drops suddenly, causing no power supply to the trip coil of the circuit breaker, so that there is no way to trip the circuit breaker to isolate the accident point when an accident occurs. The capacitor tripping device is a common standard accessory, that is, the capacitor tripping device is in the high-voltage circuit breaker panel, which is a commonly used device in the AC control circuit; there is also a commonly used device in the high-voltage circuit breaker panel in the known art. Closing device, as the name implies, the automatic reclosing device can automatically reclose and close the circuit breaker to restore power to the power circuit when the power circuit is powered off. The above two devices are installed and wired separately, resulting in limited space and wiring. It is relatively complicated, and the two can be combined and arranged on the high-voltage circuit breaker panel, which can reduce the volume. The conventional technology does not have the above equipment.

In the conventional technology, the capacitor tripping device for high-voltage circuit breakers generally uses an AC power supply as the input of the power supply, and the other is that the control power supply of the power loop system is powered by a DC power supply. Generally speaking, it is a battery pack, that is, The working power supply of the tripping circuit in the high-voltage circuit breaker panel has two different working power sources, AC or DC, and the capacitor tripping device can provide a backup power supply, but when the power circuit is powered off and then restored, the capacitor tripping device does not It can automatically reset the circuit breaker, but the general automatic reset device does not have a backup power supply inside. When the power circuit fails, the automatic reset device cannot operate because there is no backup power supply, so the circuit breaker can be tripped with a capacitor The combination of the device and the automatic closing device complements the functions of the two, making the volume smaller, more powerful, and improving the quality of electricity. The conventional technology does not have the above-mentioned functional characteristics.

In the conventional technology, in the high-voltage power distribution circuit, because unmanned substation rooms are becoming more and more common, and power transformation and power distribution are becoming more and more technologically intelligent, under the trend of automatic monitoring, the number of electrical maintenance personnel is also increasing. Simplified, so in the high-voltage switchboard, in response to the power failure of the power circuit, when the power is restored, the high-voltage circuit breaker panel can automatically re-close and power on. Many power users have such demand, but the high voltage circuit breaker panel of a power distribution system may have many shunts. A shunt high-voltage circuit breaker panel is also set. This setting method is because the functions of each automatic reset device are similar, so there is a phenomenon of repeated investment. Therefore, the automatic reset in the main circuit breaker panel and the branch circuit breaker panel The closing device is integrated into one body, which can be more streamlined, more economical and can improve the safety of electricity consumption. The automatic closing device in the prior art cannot meet the above functional requirements.

In the known technology, a high-voltage power distribution system has many high-voltage circuit breaker panels. Generally, there is a main circuit breaker panel and a branch circuit breaker panel; When there are many electrical equipment in the factory, the number of shunt circuit breaker panels will increase with the number of circuits to be protected by the system. Therefore, when each high-voltage circuit breaker panel is equipped with a capacitor tripping device and an automatic reset Under normal circumstances, it will cause the situation of repeated investment, and it is also uneconomical. Moreover, when there are more equipment installed in a power system, the more space it must use, the more wiring will be more complicated, and the maintenance and repair points will be more complicated. If there are too many, some errors may occur in the coordination time, which will increase the source of the fault point. If the capacitor tripping device is combined with the automatic closing device to have the function of multiple automatic closing devices, it can solve the problem that cannot be achieved in the conventional technology. Improved functionality.

In the conventional technology, the automatic reset device is used in the power circuit system with multi-layer protection, and it often happens that the automatic reset device can only perform reclosing and power transmission on a main circuit breaker panel. When the power circuit is powered off, there is no control power supply. Therefore, there is no power supply for all the branch boards to turn on and off the circuit breaker of the branch board. Reclosing the main circuit breaker for power transmission may be equivalent to power transmission under load, which may burn the equipment, or cause the automatic recloser to lock and cut off the power, which will cause concerns about work safety. If multiple automatic reclosers can be combined in one Only in the middle can solve the problem that there is no power supply when the branch circuit breaker panel is powered off The problem of starting and breaking when the power is cut off also solves the problem of re-closing power transmission under load when the power is cut off and then restored, resulting in a dangerous situation for industrial safety. And in the conventional technology, the automatic reclosing device may fail to make all the circuit breakers on the power circuit system sequentially put into reclosing and power transmission. The conventional technology achieves this function by adjusting the difference in time, but in fact the The circuit breakers on the circuit and the low-voltage circuit may not be turned on and off during the power failure, and the automatic reset device has no control power supply during the power failure. The function of reclosing after power transmission can combine multiple automatic reclosing devices in one and has the electric energy of the capacitor tripping device. When the power circuit is powered off after power failure, the main circuit breaker panel can be reclosed first and then according to the internal setting. The program makes the shunt circuit breaker panels reclose according to the set order, which solves the defects in the past. All automatic recloser products in the prior art cannot solve the above-mentioned common problems.

In the conventional technology, the main source of the general control power of the automatic closing device comes from the secondary side of the voltage comparator of the power circuit, so when the power circuit is powered off, the automatic closing device loses the power source, so after losing In the case of controlling the power and energy, there is no power to drive the switch to open or trip. Therefore, the automatic reclosing device can be used to improve the power supply problem by using the capacitor tripped. Traditional automatic reclosers are reclosed in the known technology. It is a major deficiency that it is impossible to confirm whether there is a connected load to the branch circuit breaker or the entire power system before power transmission. When a power failure occurs in the power circuit, the main circuit breaker panel should send an on-off action message to the branch circuit breaker panel. Make the shunt circuit breaker panel confirm that it is in the on-off state, avoid causing accidents caused by power transmission under load, and prevent losses caused by power circuit failure. A capacitive tripping device with a backup power supply is used to improve its lack. When the automatic recloser has the function of using the power supply to drive the actuating shunt circuit breaker to open and close, it avoids the problem of reclosing under load. In the known technology Unable to solve the above problem.

In the prior art, since the automatic recloser equipment is installed on a separate high-voltage circuit breaker panel, the status of each circuit breaker panel cannot be displayed on the same automatic recloser, and the equipment of the capacitor tripping device has some The part is set in the panel body of the high-voltage circuit breaker panel, which will make it impossible to judge the working power state of the trip circuit on the panel surface, which is one of its shortcomings. Generally speaking, the automatic reset device is set on the panel surface of the high-voltage circuit breaker panel Above all, combining the capacitor tripping device into one type can solve the problem of unclear display in the past, and it is easy to interpret the status to improve the safety of electricity use.

To sum up, the automatic reclosing device for capacitor tripping in the prior art can improve the problem that the automatic reclosing device does not have a backup power supply in the past, and can solve the problem of not being able to judge the status on the disk due to insufficient space in the past, and improve the possibility of automatic reclosing in the past The problem of re-closing under load and the problem of repeated investment in equipment can be solved, and the problem of non-panel-type capacitive tripping devices that cannot be displayed can be improved to improve the safety and quality of electricity consumption.

The main purpose of this creation is that the capacitor tripping device is an automatic reclosing device that combines two conventional devices, a capacitor tripping device and an automatic reclosing device, which can effectively save space and will be installed in the The automatic reclosers in each high-voltage circuit breaker panel are integrated into the main circuit breaker panel to make it more functional and reduce the error in time setting of multiple automatic reclosers, and prevent load failure. For the problem of reclosing, the automatic reclosing device of the capacitor tripping device is installed on the panel of the switchboard, which can improve the lack of clear display caused by the capacitor tripping device in the past. The setting can be used for the sequence reclosing function of the main circuit breaker and the branch circuit breaker, and the backup power generated by the capacitor tripping device can provide the automatic reclosing device to solve the problem that the automatic reclosing device does not have the power required for actuation when the power is cut off in the past, which is economical The function of saving space and improving the safety of electricity use.

In order to achieve the above purpose, this invention has an automatic reclosing device for capacitor tripping, which is electrically connected to the power circuit, a main circuit breaker is connected to the power circuit, and a shunt circuit breaker is connected to the load side of the main circuit breaker , the main circuit breaker and the branch circuit breaker are respectively equipped with a tripping coil, a closing coil, and a circuit breaker state auxiliary contact; the automatic reclosing device for the capacitor tripping includes: a power input unit, a power input detection measurement unit, a power switching substation unit, a capacitor energy storage unit, a power supply bypass unit, a capacitor tripping power output unit, a voltage input unit, a protection relay status unit, a circuit breaker status unit, and a sequence Control unit, a microprocessor unit, an on-off actuating unit, a shunt on-off actuating unit, a reclosing actuating unit, a shunt reclosing actuating unit, and a display unit; the power input unit is connected to an AC power input such as The secondary side power supply of the voltage comparator, the power supply of the uninterruptible power supply system or the DC power supply such as the battery pack, the DC power supply of other capacitor tripping devices, etc., at least one of the above; the power input detection unit is electrically connected with the power input unit, An electronic circuit with a voltage detection circuit and a comparison circuit inside, and the voltage detection result is electrically connected to the sequence control unit to the microprocessor unit; the power switching unit is internally rectified and stepped down according to the power input unit Power transformation, providing the appropriate DC power for the automatic reclosing device of the capacitor tripping device; the capacitor energy storage unit is electrically connected with the power switching substation unit, and is equipped with capacitor energy storage inside, providing energy storage DC power to the capacitor tripping Off power output unit; the power bypass unit is electrically connected to the power input unit, and the power bypass unit is internally rectified into a DC power supply, electrically connected and connected to the capacitor trip power output unit; the capacitor trip power output The unit is electrically connected to the capacitor energy storage unit and the power bypass unit to provide DC power for the tripping coil of the main circuit breaker; the voltage input unit is connected to the power circuit and connected to the primary side power supply of the main circuit breaker; the voltage input unit Electrically connected to the power input detection unit; the protection relay status unit is connected to the status output contact of the protection relay, and the protection relay status unit is electrically connected to the sequence control unit to the microprocessor unit for interpretation; the open circuit The state unit of the main circuit breaker is connected with a state contact of the main circuit breaker, which is the auxiliary state contact of the main circuit breaker, and a state contact of the branch circuit breaker, which is the state contact of the branch circuit breaker. The circuit breaker state supplementary contact, the circuit breaker state unit is electrically connected to the sequence control unit to the microprocessor unit for interpretation; It is electrically connected to the microprocessor unit for interpretation, and according to the interpretation result, it provides electric energy through the sequence control unit to include: the opening and closing action unit, the shunt opening and closing action unit, the reclosing action unit, and the shunt reclosing action unit, the display unit; the microprocessor unit is electrically connected to the sequence control unit, and through internal logic judgment and internal time setting, it sends out information sequentially to drive the actuation unit of the capacitor tripping automatic reclosing device, including: the start The breaking action unit, the shunt opening and closing action unit, the reclosing action unit, the shunt reclosing action unit, and send information to the display unit to display all the lights; the opening and closing actuation unit, the shunt opening and closing action unit, the reclosing actuating unit, the shunt reclosing actuating unit, and the display unit are all actuated according to the information sent by the microprocessor unit; an automatic reclosing device for capacitor tripping is connected to the power input unit through the power supply The switching substation unit outputs an appropriate DC voltage source through the capacitor energy storage unit and connects the power supply bypass unit to the capacitor tripping power output unit, providing electric energy as the working power supply of the tripping coil of the main circuit breaker, and the power input detection unit passes through The sequence control unit to the microprocessor unit sends information to the display unit to display the state information of its capacitor tripping, and the power switching unit provides an appropriate power supply as the power supply for the automatic reclosing device of the capacitor tripping device. When the sequence control unit detects that the protection relay state unit has an abnormal state or when the power circuit is powered off, the microprocessor unit sends a message according to the internal key setting program to drive the start-off action unit, and the main circuit breaker The tripping coil actuates to achieve the on-off function, and drives the shunt on-off actuating unit to actuate to turn off the shunt circuit breaker. When the power circuit is restored, the microprocessor unit sends a message to confirm the shunt The circuit breaker is on and off, and then The microprocessor unit sends a message to drive the reclosing action unit to reclose the main circuit breaker to the closed position. The microprocessor unit sets a program with a time interval to send information according to the internal setting program order to actuate the branch circuit breaker. The closing actuation unit closes and energizes the shunt circuit breaker to achieve the function of automatic reclosing when the capacitor trips.

In order to achieve the above-mentioned purpose, the automatic reclosing device of the capacitor tripping device in this creation is electrically connected with the power circuit, and a main circuit breaker is connected to the power circuit. The main circuit breaker is equipped with a tripping coil, a closing coil, Auxiliary contact for circuit breaker status; the automatic reclosing device for capacitor tripping includes: a power input unit, a power switching transformer unit, a capacitor tripping power output unit, a voltage input unit, a power input detection unit, A protection relay state unit, a circuit breaker state unit, a sequence control unit, a microprocessor unit, an opening and closing action unit, a reclosing action unit, and a display unit; the power input unit can be connected to the voltage comparator two At least one of secondary side power supply or uninterruptible power supply system or battery pack power supply or other capacitor tripping devices, the power input unit is electrically connected to the power switching substation unit, and the power switching substation unit contains an AC-DC conversion circuit , and then through the internal step-down rectification and switching transformation, the output of an appropriate DC power supply electrical connection includes: the sequence control unit, the reclosing actuation unit, the on-off actuation unit, the display unit, and the capacitor tripping power output unit; The voltage input unit is connected to the primary side of the main circuit breaker of the power circuit, and is electrically connected to the power input detection unit. The power input detection unit is equipped with a voltage detection circuit inside to detect whether the voltage exists and whether the power supply is valid etc.; including: the state contacts of the power input detection unit, the protection relay state unit, and the circuit breaker state unit are all electrically connected to the sequence control unit; the sequence control unit has a logic control sequence circuit and a key in the sequence control unit The microprocessor unit; the microprocessor unit sends an action message to include: the opening and closing action unit, the closing action according to the information of all the status contacts externally connected to the automatic closing device of the capacitor tripping device and the sequence control unit. unit, the display unit; The automatic reclosing device for capacitor tripping has a capacitor tripping power output unit that can provide the working power of the main circuit breaker tripping circuit. When the protection relay status unit is in an abnormal state or when the power circuit is powered off, the microprocessor After reading the internal program of the circuit breaker unit, it sends a message to actuate the start-off actuation unit, and the main circuit breaker is turned off. When the power is cut off and then restored, the power circuit has a power source, and the microprocessor unit sends out a message according to the internal sequence logic. Drive the reclosing actuating unit to reclose the main circuit breaker to achieve the function of automatic reclosing when the capacitor trips.

10: Capacitor tripping with automatic reclosing device

11: Power circuit

12: Main circuit breaker

13: Shunt circuit breaker

14: Power input unit

15: Power input detection unit

16: Power switching substation unit

17: Capacitive energy storage unit

18: Power bypass unit

19: Capacitor tripping power output unit

20: Voltage input unit

21: Protection relay state unit

22: Circuit breaker status unit

23: Sequential control unit

24: Microprocessor unit

25: Start and break actuation unit

26: Shunt start and break actuation unit

27: Reclosing action unit

28: Shunt reclose action unit

29: Display unit

30: Secondary side power supply of voltage comparator

31:Uninterruptible power supply system

32: battery pack

33: Other capacitor tripping devices

34: Voltage detection circuit

35: Comparison circuit

36: Main circuit breaker status contact

37: Shunt circuit breaker status contact

[Fig. 1] It is a configuration schematic diagram of the first embodiment of the automatic reclosing device of the capacitive tripping device of this creation

[Fig. 2] It is a schematic diagram of the configuration of the second embodiment of the automatic reclosing device of the capacitive tripping device of this creation

The first implementation case of the automatic reclosing device 10 of the capacitor tripping tool of the present invention is shown in Figure 1. An automatic reclosing device 10 of the capacitor tripping tool is electrically connected with the power circuit 11, and a main circuit breaker 12 is connected in parallel. On the power circuit 11, a shunt circuit breaker 13 is connected to the load side of the main circuit breaker 12. The main circuit breaker 12 and the shunt circuit breaker 13 are respectively equipped with a tripping coil, a closing coil, and a circuit breaker status. Auxiliary contact; the automatic reclosing device 10 for capacitor tripping includes: a power input unit 14, a power input detection unit 15, a power switching transformation unit 16, a capacitor energy storage unit 17, and a power bypass unit 18. A capacitor tripping power output unit 19, a voltage input unit 20, a protection relay status unit 21, a circuit breaker status unit 22, a sequence control unit 23, a microprocessor unit 24, and a start-up actuation unit 25. A shunt opening and closing actuating unit 26, a reclosing actuating unit 27, a shunting reclosing actuating unit 28, and a display unit 29; the power input unit 14 is connected to an AC power input such as a voltage comparator secondary side power supply 30 , Uninterruptible power supply system 31 power supply or DC power supply such as battery pack 32, other capacitor tripping devices 33 DC power supply, etc., at least one of the above; the power input detection unit 15 is electrically connected with the power supply input unit 14, and an electronic circuit with a voltage detection circuit 34 and a comparison circuit 35 is arranged inside, and the voltage detection result is electrically connected to the sequence control unit 23 to the microprocessor unit 24; the power supply The switching power conversion unit 16 is internally rectified and step-down transformed according to the power input unit 14 to provide the appropriate DC power for the capacitor tripping device 10; the capacitor energy storage unit 17 is connected to the power switching power conversion unit 16 Electrically connected, internally equipped with capacitor energy storage, providing energy storage DC power to the capacitor tripping power output unit 19; the power bypass unit 18 is electrically connected to the power input unit 14, and the power bypass unit 18 is internally rectified A DC power supply is electrically connected and connected to the capacitor tripping power output unit 19; the capacitor tripping power output unit 19 is electrically connected to the capacitor energy storage unit 17 and the power supply bypass unit 18, providing the main circuit breaker 12 The tripping coil DC power supply; the voltage input unit 20 is connected to the power circuit 11 and connected to the primary side power supply of the main circuit breaker 12, and the voltage input unit 20 is electrically connected to the power input detection unit 15; the protection relay state The unit 21 is connected to the state output contact of the protection relay, and the protection relay state unit 21 is electrically connected to the sequence control unit 23 to the microprocessor unit 24 for judgment; the circuit breaker state unit 22 is connected to a main circuit breaker state connection Point 36, the main circuit breaker state contact 36 is the state auxiliary contact of the main circuit breaker 12, and a branch circuit breaker state contact 37, the branch circuit breaker state contact 37 is the state of the branch circuit breaker 13 State auxiliary contact, the circuit breaker state unit 22 is electrically connected to the sequence control unit 23 to the microprocessor unit 24 for interpretation; the sequence control unit 23 is connected to all state units of the automatic reclosing device 10 for the capacitor tripping device It is also electrically connected to the microprocessor unit 24 for judgment, and according to the judgment result, it provides electric energy through the sequence control unit 23 to include: the opening and closing action unit 25, the shunt opening and closing action unit 26, the reclosing action unit 27, The shunt reclosing action unit 28, the display unit 29; the microprocessor unit 24 is electrically connected to the sequence control unit 23, and through internal logic judgment and internal time setting, sequentially sends out information to drive the capacitor tripping device to automatically reclose The actuation unit of the device 10 actuates, including: the on-off actuation unit 25, the shunt opening and closing actuation unit 26, the reclosing actuation unit 27, the shunt reclosing actuation unit 28, and send information to the display unit 29 to display all lights; the opening and closing actuation unit 25, the branch The circuit opening and closing actuating unit 26, the reclosing actuating unit 27, the shunt reclosing actuating unit 28, and the display unit 29 all operate according to the information sent by the microprocessor unit 24; an automatic reclosing device for a capacitor tripping tool 10. Connect the power input unit 14 to output an appropriate DC voltage source through the power switching unit 16 and connect the power supply bypass unit 18 to the capacitor tripping power output unit 19 through the capacitor energy storage unit 17 to provide electric energy as the main circuit breaker The working power of the tripping coil of the device 12, the power input detection unit 15 sends a message to the display unit 29 through the sequence control unit 23 to the microprocessor unit 24 to display the status information of its capacitor tripping, and the power switching unit 16 provides an appropriate power supply as the power supply of the automatic reclosing device 10 for the capacitor tripping tool. When the sequence control unit 23 detects that the protection relay status unit 21 has an abnormal state or when the power circuit 11 is powered off, the The microprocessor unit 24 sends information according to the internal key setting program, drives the start-off actuating unit 25, activates the tripping coil of the main circuit breaker 12 to achieve the start-off function, and drives the shunt start-off actuating unit 26 to actuate The branch circuit breaker 13 is turned on and off. When the power circuit 11 is restored, the microprocessor unit 24 sends a message to first confirm that the branch circuit breaker 13 is in the on-off state, and then the microprocessor unit 24 sends a message Drive the reclosing action unit 27 to first reclose the main circuit breaker 12 to the closed position. The microprocessor unit 24 sets a program with a time interval to send information according to the sequence of the internal setting program, and actuates the shunt reclosing action unit 28 to The shunt circuit breaker 13 is closed and energized to achieve the function of automatic reclosing when the capacitor trips.

The second implementation case of the automatic reclosing device 10 of the capacitor tripping tool of the present invention is shown in Figure 2. An automatic reclosing device 10 of the capacitor tripping tool is electrically connected with the power circuit 11, and a main circuit breaker 12 is connected in parallel. On the power circuit 11, the main circuit breaker 12 is equipped with a tripping coil, a closing coil, and a circuit breaker state auxiliary contact; the automatic reclosing device 10 of the capacitor tripping tool includes: a power input unit 14. A power switching transformation unit 16, a capacitor tripping power output unit 19, a voltage input unit 20, a power input detection unit 15, a protection relay status unit 21, a circuit breaker status unit 22, a sequence Control unit 23, a microprocessor unit 24, an opening and closing action unit 25, a reclosing action unit 27, and a display unit 29; the power input unit 14 can be connected to the secondary side power supply 30 of the voltage comparator or an uninterruptible power supply At least one of the power supply of the system 31 or the battery pack 32 or other capacitor tripping devices 33, the power input unit 14 is electrically connected to the power switching transformation unit 16, and the power switching transformation unit 16 contains an AC-DC conversion circuit, and then After internal step-down rectification, switching and transformation, the electrical connection of an appropriate output DC power supply includes: the sequence control unit 23, the reclosing action unit 27, the opening and closing action unit 25, the display unit 29, and the capacitor tripping power output Unit 19; the voltage input unit 20 is connected to the primary side of the main circuit breaker 12 of the power circuit 11, and is electrically connected to the power input detection unit 15, and the power input detection unit 15 is internally provided with a voltage detection circuit 34, Detect whether the voltage is present or not, and whether the power supply is valid; including: the power input detection unit 15, the protection relay status unit 21, and the status contacts of the circuit breaker status unit 22 are all electrically connected to the sequence control unit 23; The key in the sequence control unit 23 has a logic control sequence circuit and a microprocessor unit 24; Information interpretation sends action messages to include: the opening and closing action unit 25, the reclosing action unit 27, and the display unit 29; the capacitor tripping device automatic reclosing device 10 has a capacitor tripping power output unit 19 that can provide the main circuit breaker Device 12 trips the loop working power supply, and when the protection relay state unit 21 is in an abnormal state or when the power loop 11 is powered off, the microprocessor unit 24 internal program will send a message to actuate the start-up actuating unit 25 after reading the The main circuit breaker 12 is turned on and off. When the power is turned off and then restored, the power circuit 11 has a power source, and the microprocessor unit 24 reads and sends information according to the internal sequence logic to drive the reclosing action unit 27 to reclose the main circuit breaker. The device 12 is closed to achieve the function of automatic reclosing of the capacitor tripping tool able.

To sum up, this invention has an automatic reclosing device for capacitor tripping, which further improves the stability and safety of the circuit breaker panel in the power supply system, and has deep industrial applicability. In addition, after checking the relevant products on the market and the approved patent announcements, there is no one with the same technical characteristics as this creation, which also meets the statutory patent application requirements of novelty and advancement. To file a patent application in accordance with the law, I urge your review committee to grant the patent for this case as soon as possible to ensure the rights and interests of the applicant. However, what is disclosed in this case is only a preferred embodiment of this creation, which cannot limit the scope of rights of this creation. Any equivalent changes or modifications made in accordance with the spirit of this creation are still covered by the scope of patent applications for this creation. middle.

10: Capacitor tripping with automatic reclosing device

11: Power circuit

12: Main circuit breaker

13: Shunt circuit breaker

14: Power input unit

15: Power input detection unit

16: Power switching substation unit

17: Capacitive energy storage unit

18: Power bypass unit

19: Capacitor tripping power output unit

20: Voltage input unit

21: Protection relay state unit

22: Circuit breaker status unit

23: Sequential control unit

24: Microprocessor unit

25: Start and break actuation unit

26: Shunt start and break actuation unit

27: Reclosing action unit

28: Shunt reclose action unit

29: Display unit

30: Secondary side power supply of voltage comparator

31:Uninterruptible power supply system

32: battery pack

33: Other capacitor tripping devices

34: Voltage detection circuit

35: Comparison circuit

36: Main circuit breaker status contact

37: Shunt circuit breaker status contact

Claims (2)

An automatic reclosing device for capacitor tripping, which is electrically connected to a power circuit, a main circuit breaker is connected to the power circuit, a shunt circuit breaker is connected to the load side of the main circuit breaker, and the main circuit breaker is connected to the load side of the main circuit breaker. Each of the branch circuit breakers is equipped with a tripping coil, a closing coil, and a circuit breaker state auxiliary contact; The automatic reclosing device for a capacitor trip includes: a power input unit, a power input detection unit, a power switching and transformation unit, a capacitor energy storage unit, a power bypass unit, a capacitor trip power output unit, A voltage input unit, a protection relay state unit, a circuit breaker state unit, a sequence control unit, a microprocessor unit, an opening and breaking action unit, a shunt opening and breaking action unit, a reclosing action unit, a A shunt reclosing action unit and a display unit; The power input unit is connected to the AC power input such as the secondary side power supply of the voltage comparator, the power supply of the uninterruptible power supply system or the DC power supply such as the battery pack, the DC power supply of other capacitor tripping devices, etc., at least one of the above; The power input detection unit is electrically connected to the power input unit, and an electronic circuit with a voltage detection circuit and a comparison circuit is provided inside, and the voltage detection result is electrically connected to the sequence control unit to the microprocessor unit; The power switching substation unit is internally rectified and step-down transformed according to the power input unit, and provides appropriate DC power for the capacitor tripping and automatic closing device; The capacitive energy storage unit is electrically connected with the power switching substation unit, and is internally provided with capacitor energy storage, which provides a DC power supply for energy storage to the capacitor tripping electric energy output unit; The power supply bypass unit is electrically connected to the power input unit, and the power supply bypass unit is internally rectified into a DC power supply and electrically connected to the capacitor tripping power output unit; the capacitor tripping power output unit is electrically connected to the The capacitor energy storage unit and the power bypass unit provide DC power for the tripping coil of the main circuit breaker; the voltage input unit is connected to the power circuit and connected to the primary side power supply of the main circuit breaker, and the voltage input unit is electrically connected to the Power input detection unit; the protection relay status unit is connected to the status output contact of the protection relay, and the protection relay status unit is electrically connected to the sequence control unit to the microprocessor unit for judgment; the circuit breaker status unit is connected to A state contact of the main circuit breaker, the state contact of the main circuit breaker is the state auxiliary contact of the main circuit breaker, and a state contact of the branch circuit breaker, the state contact of the branch circuit breaker is the state contact of the branch circuit breaker State auxiliary contact, the circuit breaker state unit is electrically connected to the sequence control unit to the microprocessor unit for judgment; the sequence control unit is connected to all state units with automatic reclosing devices connected to the capacitor and electrically connected to The microprocessor unit makes a judgment, and according to the judgment result, provides electric energy through the sequence control unit to include: the opening and closing action unit, the shunt opening and closing action unit, the reclosing action unit, the shunt reclosing action unit, the display unit; the microprocessor unit is electrically connected to the sequence control unit, and through internal logic judgment and internal time setting, it sends out information sequentially to drive the actuation unit of the capacitor tripping automatic reclosing device, including: the start-off actuation unit, The shunt opening and closing actuating unit, the reclosing actuating unit, and the shunt reclosing actuating unit send information to the display unit to display all lights; the opening and closing actuating unit, the shunt opening and closing actuating unit, the resetting The closing actuating unit, the shunt reclosing actuating unit, and the display unit are all actuated according to the information sent by the microprocessor unit; an automatic reclosing device for capacitor tripping is connected to the power input unit through the power switch to change The electrical unit outputs an appropriate DC voltage source through the capacitor energy storage unit and connects the power supply bypass unit to the capacitor tripping power output unit to provide electric energy as the working power supply for the tripping coil of the main circuit breaker. The power input detection unit passes through this sequence The control unit sends a message to the microprocessor unit to display the status information of the capacitor tripping, and the power switching unit provides an appropriate power supply as the power supply for the automatic closing device of the capacitor tripping device. When the sequence control When the unit detects that the protection relay state unit has an abnormal state or when the power circuit is powered off, the microprocessor unit sends a message according to the internal key setting program to drive the start-off action unit to trip the main circuit breaker. The off-coil actuation achieves the on-off function, and drives the shunt on-off actuation unit to actuate to turn on and off the shunt circuit breaker. When the power circuit is restored, the microprocessor unit sends a message to confirm the shunt circuit breaker first In the on-off state, the microprocessor unit sends a message to drive the reclosing action unit to reclose the main circuit breaker to the closed position. The microprocessor unit sets a time interval program to send out information in accordance with the internal setting program sequence , actuating the shunt reclosing actuating unit to close and energize the shunt circuit breaker to achieve the function of automatic reclosing when the capacitor trips. An automatic reclosing device for a capacitor tripping device, which is electrically connected to a power circuit, and a main circuit breaker is connected to the power circuit in parallel. The main circuit breaker is equipped with a tripping coil, a closing coil, and a circuit breaker state auxiliary contact The automatic reclosing device of the capacitor tripping tool includes: a power input unit, a power switching and transformation unit, a capacitor tripping power output unit, a voltage input unit, a power input detection unit, and a protection relay state unit , a circuit breaker status unit, a sequence control unit, a microprocessor unit, an opening and closing action unit, a reclosing action unit, and a display unit; the power input unit can be connected to the secondary side power supply of the voltage comparator or continuously Electric power supply system or battery pack At least one of the power supply or other capacitor tripping devices, the power input unit is electrically connected to the power switching and transformation unit, the power switching and transformation unit contains an AC-DC conversion circuit, and then the internal step-down rectification is switched and transformed, and the output Appropriate DC power supply electrical connections include: the sequence control unit, the reclosing action unit, the opening and closing action unit, the display unit, the capacitor tripping power output unit; the voltage input unit is connected to the power circuit and the main circuit breaker The primary side is electrically connected to the power input detection unit, and the power input detection unit is equipped with a voltage detection circuit inside to detect the presence or absence of voltage and whether the power supply is valid; including: the power input detection unit, the The state contacts of the protection relay state unit and the circuit breaker state unit are electrically connected to the sequence control unit; the sequence control unit has a logic control sequence circuit and a microprocessor unit; the microprocessor unit depends on The automatic reclosing device of the capacitor tripping device is externally connected to all state contacts and the sequence control unit for information interpretation and sends an action message to include: the opening and closing actuating unit, the reclosing actuating unit, and the display unit; the capacitor tripping device automatically The reclosing device has a capacitor tripping power output unit that can provide the main circuit breaker tripping circuit working power. When the protection relay state unit is in an abnormal state or when the power circuit is powered off, the microprocessor unit internal program is judged Send a message to actuate the opening and closing actuation unit to open and close the main circuit breaker. When the power is cut off and then restored, the power circuit has a power source, and the microprocessor unit judges and sends information according to the internal sequence logic to drive the reclosing actuation unit , Reclosing the main circuit breaker is closed to achieve the function of automatic reclosing when the capacitor trips.

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