TWM637120U - An automatic sequence tripping and reclosing device - Google Patents

Abstract

The invention is the device of automatic sequence tripping and reclosing, which can detect the power state of the power circuit on the supply side and the load side of the circuit breaker and locks automatically in abnormal condition. This invention let the circuit breakers in power circuit get OFF in order since the power cut and get ON in order since the power back to achieve automatic sequence tripping and reclosing, it can reduce the labor cost and improve the electricity security.

Description

Automatic sequential tripping reclosing device

This invention creates an automatic sequence tripping reclosing device, which can improve the automatic reclosing device in the prior art that cannot independently test the power state of the power supply side and the load side of the circuit breaker in the power circuit, and automatically locks when it is in an abnormal state. The circuit breakers are turned OFF in order, and the circuit breakers in the power circuit are turned ON in order when the power is restored, which saves manpower to achieve economy and safety of power consumption, and achieves the function of automatic sequence tripping and reclosing.

In the conventional technology, the automatic recloser is used in the low-voltage power supply system, because the power circuit is generally not equipped with a voltage relay for detecting the voltage state in the power circuit, nor is there a current relay for detecting the current state in the power circuit. The traditional automatic closing device is not equipped with current state or phase sequence or directional current and voltage detection. It is a big disadvantage that it must rely on external electrical inspection and detection components to provide interpretation information. Furthermore, the traditional automatic closing device is especially Before putting into operation, the biggest defect of the automatic closing device is that there is no detection of the power state of the load side of the circuit breaker at all. All automatic closing device 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 electric power, there is no power to drive the switch Generally, the circuit breaker on the low-voltage power panel does not have an equipment detection sensor or an insufficient voltage trip device, so the circuit breaker will not trip or start when the power is off. so that the automatic closing device is generally not installed in the low-voltage power circuit, and all automatic closing device products in the prior art cannot solve the above-mentioned common problems.

In the conventional technology, even if the automatic reset device is in the high-voltage power circuit, generally only the power circuit of the main high-voltage circuit breaker panel is equipped with a voltage protection relay for voltage detection, and the general shunt panel is not installed. Voltage protection relay. When there is a voltage protection relay in the high-voltage power circuit, the voltage action is based on the voltage relay. The voltage detection content inside the automatic reset device is not approved by Taipower. The sensing element, namely the protection relay, is attached great importance to by the whole world, including Teclast. Only the relay approved by Teclast, which is recognized by the world's IEEE, can be used in the switchboard of high-voltage circuit breaker. In the low-voltage circuit breaker panel, except for the above-mentioned control In addition to the power source, there are generally no other power sensing elements, so that there is no power source to trip or open the circuit breaker. All automatic recloser products in the prior art cannot solve the above common problems.

In the conventional technology, when the automatic recloser resumes power after a power failure, the automatic recloser cannot detect whether the secondary side of the circuit breaker is in a normal state. In the existing technology, the automatic reclosing device only temporarily stores the data status of the power supply side of the power circuit breaker before the last power resumption. There is a point of failure, or it may be a PLC control circuit on the equipment side, feeder, production line, plastic melting furnace, petrochemical plant, electronics factory production process, furnace...etc. In the event of relay actuation, the conventional automatic reclosing device will automatically switch on the power transmission, because there is no induction detection action for the equipment and power circuit on the load side of the circuit breaker, which may cause loss of personnel or life and property. The automatic recloser cannot self-pressurize the test, if the power returns There is a reverse-phase power supply (reverse power transmission) in the road, or there is a problem with the equipment itself, or there is a fault on the line... The automatic reset device should be able to automatically detect and automatically lock when there is an abnormal state. When troubleshooting, the lock can be automatically released, instead of a simple manual/automatic operation in the prior art that may cause malfunction. All automatic recloser products in the prior art cannot solve the above-mentioned common problems.

In the conventional technology, the automatic reset device is used in a multi-level power circuit system. The conventional automatic reset device can only perform the function of reclosing and transmitting power on a main circuit breaker panel. Since there is no control power supply, all There is no way for the branch panel to turn on and off the circuit breaker of the branch panel by itself. If the circuit breakers below the main panel are not turned on and off, and the circuit breakers are all ON, it may be the same as when the power is restored and closed. There will be doubts about work safety when there is power transmission under load, and all the automatic recloser products in the prior art cannot solve the above common problems.

In the known technology, if the high-voltage circuit of the automatic reclosing device is powered off, and the following circuit breakers are not switched off, at this time, the general building has its own generator. When the generator starts to generate electricity and sends it to the power circuit, the The power voltage may go to the high-voltage circuit through the bus bar or cable through the transformer. At this time, maintenance workers on the high-voltage plate may touch the high-voltage circuit. Therefore, when the power fails, it is safer to turn off the main circuit breaker first. And all automatic recloser products in the prior art can't solve the above-mentioned common problem.

In the known technology, if the high-voltage circuit of the automatic reclosing device is powered off, and the following circuit breakers are not switched off, at this time, the general building has its own generator. When the generator starts to generate electricity and sends it to the power circuit, the The power voltage may go to the load side of the circuit breaker below the transformer through the bus bar or cable. the possibility of fire, so the circuit breaker should be stopped It should be turned on and off after 30 seconds to 3 minutes to ensure safety. The conventional automatic closing device has no independent power supply and no mechanism for opening and closing the circuit breaker sequentially. All automatic closing devices in the conventional art Products cannot solve the common problems mentioned above.

In the prior art, the automatic reclosing device does not make all the circuit breakers on the power circuit system sequentially put into reclosing and power transmission. In the past, this function was achieved by adjusting the time difference. The circuit breakers on some circuits were not turned on and off during the power failure, and the automatic reset device did not control the power supply during the power failure. Closed function, all automatic recloser products in the prior art cannot solve the above-mentioned common problems.

In the conventional technology, all the information of the automatic reset device such as the state of the circuit breaker such as closed ON, open break OFF, and trip trip must be connected externally when the relationship between the automatic reset device and other automatic reset devices Insufficient input points of the conventional automatic recloser will also cause confusion in the internal control circuit, which will cause the automatic recloser to fail to automatically lock when the fault occurs, and cannot be turned off in order to OFF the power circuit in the event of a power failure. The circuit breaker cannot be sequentially reclosed when the power is restored, and the circuit breaker in the power circuit that is turned on and turned ON. All automatic recloser products in the prior art cannot solve the above-mentioned common problems.

In summary, the automatic reset device in the prior art has no self-detection function of the power circuit status, and is not connected to the power side and the load side of the circuit breaker, so it cannot be used in a low-power circuit system, especially after a power failure In addition, it is generally used in medium and high voltage power systems. The information of the automatic reset device comes from the contact state of the protection relay. When there is doubt about the control power supply of the tripping circuit, there will be no signal input, resulting in the interpretation of information may be wrong, and when the control power supply is for some reason such as the fuse is burned, it may also cause failure. Generally speaking, the automatic reset in the prior art The closing device is not automatic at all. It should be called a passive closing device. Its real function is probably just a control relay, plus a time relay. Therefore, the actual function of the automatic closing device is when the power is lost. The power system should be able to automatically turn off the circuit breaker section by section from top to bottom in sequence, and when the power is restored, it should be able to automatically detect that the power system is in a normal state, and it should be possible to use the power system from top to bottom in sequence. For circuit breakers that can be automatically closed and put into power transmission section by section, when the blocking relay encounters an abnormal state, no matter whether it is the power supply side of the circuit breaker or the load side of the circuit breaker, it can control the power supply in the power circuit. In the case of no electricity and no energy, it can automatically lock when the fault occurs. Such a basic functional requirement, all automatic reclosing devices in the prior art cannot solve the above common problems. Therefore, there is a new type of automatic sequence trip reclosing device in this case. , has the importance and urgency of its development in the actual application of the market.

In order to solve the above-mentioned problems of the prior art, the present invention creates an automatic sequence trip reclosing device, which can improve the power status of the power supply side and the load side of the circuit breaker in the power circuit that cannot be independently tested by the automatic recloser in the prior art. When the power is off, the circuit breakers in the power circuit are turned OFF in order, and when the power is restored, the circuit breakers in the power circuit are closed in order, saving manpower to achieve economy and electricity safety, and to achieve automatic sequence tripping and recovery. off function.

In order to achieve the above purpose, this invention creates an automatic sequential tripping and reclosing device. It is first necessary to establish a circuit breaker power supply side and load side to detect the state of the power circuit, and to establish a control power supply with multiple power inputs such as an uninterruptible power supply system. , battery pack, and capacitor tripping device, including at least the input power and external electric energy on the power supply side and the load side. The control power supply should preferably have an energy storage power supply, so as to have power to make the circuit breaker turn OFF or trip Trip when there is a power failure. Or the power supply that can be blocked when the fault is abnormal, the internal key has a logic circuit or a microprocessor unit, and the circuit breaker can be turned off and turned on in sequence when there is a power failure When the power is restored, the circuit breaker will be ON and closed in order. It is best to output a test circuit on the load side to detect whether the circuit is normal or not to prevent short-circuit or grounding faults. When abnormality is detected, the circuit breaker can be blocked and opened The breaker cannot be closed or opened. A better method is to judge the power status of the circuit breaker itself and receive the power status of other circuit breakers, such as ON, OFF state auxiliary contacts or fault trip Trip auxiliary contacts, and external Command and relay status contacts are used as subsidy parameters to make the interpretation of the automatic recloser more correct and achieve the function of automatic sequential tripping and reclosing.

In order to achieve the above purpose, this invention creates an automatic sequential tripping and reclosing device. When the power circuit is powered off, in order to prevent the self-provided generator in the power system, the generator will start within 30 seconds to 3 minutes, so the automatic There must be a timing delay circuit after the power failure of the main circuit breaker inside the sequence trip reclosing device. After confirming that the self-contained generator is not powered, the circuit breaker switch of the branch is turned off. When the power circuit is restored, it is relatively The best way is also to have a timing delay circuit to detect whether there is a phase loss or reverse phase abnormal state in the power circuit of the power supply side of the circuit breaker to be closed, and to detect whether there is a reverse phase power supply (reverse power transmission) on the load side of the circuit breaker, and then send it to A message detects whether there is a short circuit between phases on the load side and whether there is an abnormal grounding state. When the power supply side and the load side detect that the power circuit has an abnormal state, a locking signal is sent to lock the circuit breaker so that the circuit breaker cannot be closed again. Put ON or turn OFF, when there is no abnormal state on the power supply side and the load side, the automatic sequence tripping reclosing device sends a reclosing message to make the circuit breaker reclose and turn it on, and the automatic sequence tripping reclosing The device will judge all the states of the power circuit by itself. If it fails to switch on, it will restart the above action and then switch on again. Generally speaking, if it fails to close three times, it will stop sending messages and lock the automatic sequence tripping reset device to lock the circuit breaker. It has the function of self-detection and protection, and achieves the function of automatic sequential escape and reclosure.

In order to achieve the above purpose, this invention creates an automatic sequential tripping reclosing device, which is electrically connected with a power circuit, a circuit breaker is connected to the power circuit, and the circuit breaker is equipped with a tripping machine. structure, auxiliary contact, electric operator; the automatic sequence trip reclosing device includes: an external support power supply, a power state detection control unit, an external command unit, an actuation unit, and a display unit; the external support power supply can be It is connected to the power supply of the uninterruptible power supply system or the battery pack or the capacitor tripping device, etc. The external support power supply includes an AC and DC power input unit, and then the internal step-down rectification switches the power conversion unit to output an appropriate DC power supply for the power state. The detection control unit and the action unit; the power state detection control unit includes a voltage detection circuit, the voltage detection circuit is electrically connected to the power supply side and the load side of the circuit breaker, and an electronic circuit is connected to the voltage detection circuit, It is used to sense the voltage information of the power supply side and the load side of the circuit breaker, and the state signals of whether each phase sequence of the electronic circuit has power or no power is electrically connected to the inside of the power state detection control unit through a control circuit A microprocessor unit is installed, and the program of the key in the microprocessor unit judges and calculates the internal connection of the circuit breaker according to the state of the voltage signal of each phase sequence of the power supply side and the load side of the circuit breaker under inspection. Point state, and judge the abnormal state of the power supply side and the load side of the circuit breaker, such as at least one of phase loss, reverse phase, reverse phase power supply, high voltage, low voltage, internal contact welding, etc., the power state detection The control unit is electrically connected to the external command unit, the actuating unit, the display unit and a load-side impedance detection circuit, and the load-side impedance detection circuit is electrically connected to the load side. The processor unit sends a power supply to the load side. When the detected impedance value is zero, it is a short circuit or ground fault state; the external command unit is electrically connected to a relay state contact, an external command, and an external state contact. The external command unit electrically connects all the state contacts to the microprocessor unit, and the microprocessor unit analyzes and interprets and sends a message to the actuation unit and the display unit; the actuation unit and the power state detection control unit Electrically connected, according to the information sent by the microprocessor unit, the power supply is provided by the power circuit or the external support power supply. The actuation unit includes: a blocking actuation circuit, an opening and closing actuation circuit, and a reclosing actuation circuit circuit; when the microprocessor unit detects an abnormal power state in the power circuit, the blocking power circuit in the blocking power circuit is turned on, and the power supply circuit is electrically connected to the power state detection control unit according to the micro The processor unit command is actuated, and the blocking actuating circuit is electrically connected to actuate. When the blocking actuating circuit is actuated, the opening and closing actuating circuit and the reclosing actuating circuit are not actuated, and the tripping mechanism of the circuit breaker is blocked; When the power circuit stops supplying power, the microprocessor unit inside the power state detection control unit sends a message. After a set time of relay, when there is no abnormal power on the load side, the electric operation power circuit is turned on. , the electric operation power circuit is electrically connected to the electric operator, and the electric operator is actuated according to the instruction of the microprocessor unit, and the electric operator of the circuit breaker is driven by the external support power supply through the control circuit to start. When the reclosing actuating circuit stops power supply and then resumes power supply, the reclosing actuating circuit judges that the power circuit is in normal state according to the external command unit and the microprocessor unit inside the power state detection control unit , the control circuit inside the power state detection control unit and the microprocessor unit send a message to the load side impedance detection circuit to the load side, detect the load side line impedance value, and judge it by the microprocessor unit The load side circuit of the circuit breaker is short-circuited or grounded. If the power state is normal, the power state detection control unit passes the time set by the time relay, the electric operation power circuit is turned on, the reclosing actuation circuit is turned on, and the power circuit The electric power supply or the external supporting power supply provides power to drive the electric operator of the circuit breaker to the closed position; the display unit is activated by the microprocessor unit inside the power state detection control unit; an automatic sequence trip reset When the power circuit detects an abnormal power state, the blocking actuation circuit automatically blocks the circuit breaker. When the power circuit stops supplying power, the power state detection control unit and the external command unit pass the microprocessor The unit judges to send a message to open and close the circuit breaker. After the time is set by the time relay, the circuit breaker The circuit of the power supply for manual operation is turned on, and the circuit for starting and breaking is turned on. The electric operator of the circuit breaker is powered by the external support power supply to drive the electric operator of the circuit breaker to the on-off position. The external command unit determines that the state of the power circuit is normal through the microprocessor unit inside the power state detection control unit, and then the microprocessor unit inside the power state detection control unit sends a message through the load side impedance detection circuit to The load side detection, when the power state is normal, the power state detection control unit passes through the set time of the time relay, the electric operation power circuit is turned on, the reclosing action circuit is turned on, the power circuit or the external support power supply Power is provided to drive the electric operator of the circuit breaker to the closed position.

In order to achieve the above-mentioned purpose, this invention creates an automatic sequential tripping reclosing device, which is electrically connected with a power circuit, and a circuit breaker is connected to the power circuit. The circuit breaker is equipped with a tripping mechanism, auxiliary contacts, Electric manipulator; the automatic sequence tripping reclosing device includes: an external support power supply, a power state detection control unit, an external command unit, an actuating unit, and a display unit; the external support power supply can be connected to the uninterruptible power supply system Or the power supply of the battery pack or the capacitor tripping device, etc., the external support power supply includes an AC and DC power input unit, and then through the internal step-down rectification switching power conversion unit, the output of an appropriate DC power supply for the power state detection control unit and the action unit; the power state detection control unit includes a voltage detection circuit, the voltage detection circuit is electrically connected to the power supply side and the load side of the circuit breaker, and an electronic circuit is embedded in the voltage detection circuit to sense the open circuit The voltage information on the power supply side and the load side of the device, and the state signals of whether there is power or no power in each phase sequence of the electronic circuit, are then electrically connected to a microprocessor provided inside the power state detection control unit through a control circuit unit, the program of the key in the microprocessor unit judges and calculates the state of the internal contacts of the circuit breaker according to the state of the voltage signal of each phase sequence of the power supply side and the load side of the circuit breaker under inspection, and judges the state of the circuit breaker. The abnormal state of the power supply side and the load side of the circuit breaker, such as phase loss, At least one of reverse phase, reverse phase power supply, high voltage, low voltage, internal contact welding, etc., the power state detection control unit is electrically connected to the external command unit, the operating unit, and the display unit; the external command unit is electrically Sexually connect a relay state contact, an external command, and an external state contact. The external command unit electrically connects all the state contacts to the microprocessor unit, which is analyzed and interpreted by the microprocessor unit and sent out A message to the actuation unit and the display unit; the actuation unit is electrically connected to the power state detection control unit, and is actuated by the power supply provided by the power circuit or the external support power supply according to the information sent by the microprocessor unit. The unit includes: a locking actuating circuit, an opening and closing actuating circuit, and a reclosing actuating circuit; when the microprocessor unit detects an abnormal power state in the power circuit, the locking actuating circuit locks the power circuit in the actuating circuit circuit conduction, the blocking power supply circuit is electrically connected to the power state detection control unit to operate according to the microprocessor unit instruction, and is electrically connected to activate the blocking actuation circuit. When the actuating circuit does not actuate, the tripping mechanism of the circuit breaker is blocked; when the power circuit stops supplying the actuating circuit, a message is sent by the microprocessor unit inside the power state detection control unit, and after a period of time, the relay After the set time, when there is no abnormal power on the load side, the electric operation power circuit is turned on, and the electric operation power circuit is electrically connected to the electric operator, and the electric operator is activated according to the instruction of the microprocessor unit, and the external support power supply Provide power supply through the control circuit to drive the electric operator of the circuit breaker to the on-off position; when the reclosing actuation circuit stops power supply and then resumes power supply, the reclosing actuation circuit communicates with the power supply according to the external command unit. When the microprocessor unit inside the state detection control unit determines that the state of the power loop is normal, the microprocessor unit inside the power state detection control unit sends a message, and the power state detection control unit is set by the time relay After a certain time, the electric operation power circuit is turned on, the reclosing action circuit is turned on, and the electric circuit power supply or the external support power supply provides Power supply, which drives the electric operator of the circuit breaker to the closed position; the display unit is activated by the microprocessor unit inside the power state detection control unit; an automatic sequence trip reclosing device, when the power circuit detects When an abnormal power state is detected, the blocking actuation circuit will automatically block the circuit breaker. When the power circuit stops supplying power, the power state detection control unit and the external command unit will send a message through the microprocessor unit to open and close the circuit breaker. For the circuit breaker, after the time is set by the time relay, the electric operation power supply circuit is turned on, the start-off actuating circuit is turned on, and the electric operator of the circuit breaker is powered by the external support power supply to drive the electric operator to the start-off position. When the power circuit returns to normal When supplying power, the power state detection control unit and the external command unit determine that the power loop state is normal and send a message through the microprocessor unit inside the power state detection control unit. After the set time of the time relay, the electric power The operating power circuit is turned on, the reclosing actuating circuit is turned on, and the power circuit or the external supporting power supply provides power to drive the electric operator of the circuit breaker to actuate to the closed position.

10: Automatic sequential tripping reclosing device

11: Power circuit

12: circuit breaker

13: escape mechanism

14: Auxiliary contact

15: Electric operator

16: Power side

17: Load side

20: External support power supply

21:Uninterruptible power supply system

22: battery pack

23: Capacitor tripping device

30: Power state detection control unit

31: Voltage detection circuit

32: Control circuit

33: Microprocessor unit

40: External command unit

50: Action unit

51: Locking actuation circuit

52: Start and break actuation circuit

53: Reclosing actuation circuit

54:Lock power circuit

55: Time Relay

56: Electric operation power supply circuit

60: Display unit

70: load side impedance detection circuit

[Fig. 1] It is a configuration schematic diagram of the first embodiment of the automatic sequence jump-off reclosing device of this creation

[Fig. 2] It is the configuration schematic diagram of the second embodiment of the automatic sequence jump-off reclosing device of this creation

The first implementation case of an automatic sequential tripping reclosing device 10 of the present invention is shown in Figure 1. An automatic sequential tripping reclosing device 10 is electrically connected to a power circuit 11, and a circuit breaker 12 is connected to the On the power circuit 11, the circuit breaker 12 is equipped with a tripping mechanism 13, an auxiliary contact 14, and an electric operator 15; the automatic sequential tripping reclosing device 10 includes: an external supporting power supply 20, a power state detection control unit 30. An external command unit 40, an actuating unit 50, and a display unit 60; the external support power supply 20 can be connected to the power supply or power supply of the uninterruptible power supply system 21 or the battery pack 22. Capacitance tripping device 23, etc., the external support power supply 20 includes an AC and DC power input unit, and then through the internal step-down rectification and switching power conversion unit, an appropriate DC power supply is output to power the power state detection control unit 30 and the actuation unit 50; The power state detection control unit 30 includes a voltage detection circuit 31, the voltage detection circuit 31 is electrically connected to the power side 16 and the load side 17 of the circuit breaker 12, the voltage detection circuit 31 is internally connected to an electronic circuit for use By sensing the voltage information of the power supply side 16 and the load side 17 of the circuit breaker 12, the status signal of each phase sequence of the electronic circuit with power or no power is electrically connected to the power status detection through a control circuit 32 A microprocessor unit 33 is installed inside the control unit 30, and the program of the key in the microprocessor unit 33 is based on whether the voltage signal of each phase sequence of the circuit breaker 12, the power supply side 16 and the load side 17 is detected. , to judge and calculate the internal contact state of the circuit breaker 12, and judge the abnormal state of the power supply side 16 and the load side 17 in the circuit breaker 12, such as under-phase, reverse phase, reverse phase power supply, high voltage, low voltage, internal At least one of contact welding, etc., the power state detection control unit 30 is electrically connected to the external command unit 40, the action unit 50, the display unit 60 and a load-side impedance detection circuit 70, the load-side impedance detection circuit 70 The test circuit 70 is electrically connected to the load side 17, and the internal microprocessor unit 33 of the power state detection control unit 30 sends a power supply to the load side 17. When the detected impedance value is zero, it is a short circuit or ground fault state; the external command The unit 40 is electrically connected to a relay state contact, an external command, and an external state contact, and the external command unit 40 is electrically connected to all the state contacts to the microprocessor unit 33. The unit 33 analyzes and interprets, and sends a message to the actuation unit 50 and the display unit 60; the actuation unit 50 is electrically connected to the power state detection control unit 30, and the information sent by the microprocessor unit 33 is generated by the power circuit 11 or the external support power supply 20 to provide power supply operation, the actuation unit 50 includes: a locking actuation circuit 51, an opening and closing actuation circuit 52, a reclosing actuation circuit 53; When an abnormal power state is detected in the power circuit 11, the closed The lock power supply circuit 54 in the lock actuation circuit 51 is turned on, and the lock power supply circuit 54 is electrically connected to the power state detection control unit 30 to operate according to the instruction of the microprocessor unit 33, and is electrically connected to activate the lock actuation circuit 51. When the lock When the actuating circuit 51 is actuated, the on-off actuating circuit 52 and the reclosing actuating circuit 53 do not actuate, and the tripping mechanism 13 of the circuit breaker 12 is locked; The microprocessor unit 33 inside the power state detection control unit 30 sends a message. After a set time of a time relay 55, when the load side 17 has no abnormal power, the electric operation power circuit 56 is turned on, and the electric operation power circuit 56 is electrically connected to the electric operator 15, the electric operator 15 is actuated according to the instruction of the microprocessor unit 33, and the electric operator 15 of the circuit breaker 12 is driven by the external support power supply 20 through the control circuit 32. To the on-off position; when the reclosing actuating circuit 53 resumes power supply after the power circuit 11 stops power supply, the reclosing actuating circuit 53 detects the internal microprocessor unit of the control unit 30 according to the external command unit 40 and the power state 33 When it is determined that the state of the power circuit 11 is normal, the control circuit 32 and the microprocessor unit 33 inside the power state detection control unit 30 send a message to the load side impedance detection circuit 70 to the load side 17 to detect The line impedance value of the load side 17 is judged by the microprocessor unit 33 in the short circuit or ground state of the load side 17 line of the circuit breaker 12. If the power state is normal, the power state detection control unit 30 is set by the time relay 55 After a period of time, the electric operation power supply circuit 56 is turned on, the reclosing actuation circuit 53 is turned on, the electric power supply of the electric circuit 11 or the external support power supply 20 provides power, and the electric operator 15 driving the circuit breaker 12 is actuated to the closed position; The display unit 60 is actuated by information sent by the microprocessor unit 33 inside the power state detection control unit 30; a kind of automatic sequential tripping reclosing device 10, when the power circuit 11 detects an abnormal power state, the blocking actuation circuit 51 to automatically block the circuit breaker 12, when the power circuit 11 stops supplying power, the power state detection control unit 30 and the external command unit 40 are determined by the microprocessor unit 33 to send The circuit breaker 12 must be turned on and off when a message is sent out. After the time is set by the time relay 55, the electric operation power supply circuit 56 is turned on, the start and break actuating circuit 52 is turned on, and the electric operation of the circuit breaker 12 is powered by the external support power supply 20 When the power circuit 11 returns to the normal power supply, the power state detection control unit 30, the external command unit 40 and the microprocessor unit 33 inside the power state detection control unit 30 determine the power The state of the circuit 11 is normal, and then the microprocessor unit 33 in the power state detection control unit 30 sends a message to the load side 17 for detection through the load side impedance detection circuit 70. When the power state is normal, the power After the state detection control unit 30 passes the set time of the time relay 55, the electric operation power supply circuit 56 is turned on, the reclosing actuation circuit 53 is turned on, and the power circuit 11 or the external support power supply 20 provides power to drive the circuit breaker 12. The electric operator 15 moves to the closed position.

The second implementation case of an automatic sequential tripping reclosing device of this invention is shown in Figure 2. An automatic sequential tripping reclosing device 10 is electrically connected to a power circuit 11, and a circuit breaker 12 is connected to the power circuit in parallel. On the circuit 11, the circuit breaker 12 is equipped with a tripping mechanism 13, an auxiliary contact 14, and an electric operator 15; the automatic sequential tripping reclosing device 10 includes: an external supporting power supply 20, a power state detection control unit 30 , an external command unit 40, an actuating unit 50, and a display unit 60; the external support power supply 20 can be connected to the power supply of the uninterruptible power supply system 21 or the battery pack 22 or the capacitor tripping device 23, etc., and the external support power supply 20 It includes an AC and DC power input unit, and then through the internal step-down and rectification switching power conversion unit, it outputs an appropriate DC power supply to power the power state detection control unit 30 and the actuation unit 50; the power state detection control unit 30 includes a voltage detection circuit 31. The voltage detection circuit 31 is electrically connected to the power supply side 16 and the load side 17 of the circuit breaker 12. An electronic circuit is embedded in the voltage detection circuit 31 for sensing the power supply side 16 and the load side 17 of the circuit breaker 12. The voltage information of the load side 17, the state signal of each phase sequence of the electronic circuit with electricity and no electricity, is re-energized through a control circuit 32 Sexually connected to a microprocessor unit 33 provided inside the power state detection control unit 30, the program of the key in the microprocessor unit 33 is based on the detected circuit breaker 12, the power supply side 16 and the load side 17 respectively Whether the voltage signal of the phase sequence is in the state is used to judge and calculate the internal contact state of the circuit breaker 12, and to judge the abnormal state of the power supply side 16 and the load side 17 of the circuit breaker 12, such as underphase, reverse phase, reverse phase power supply, At least one of high voltage, low voltage, internal contact welding, etc., the power state detection control unit 30 is electrically connected to the external command unit 40, the action unit 50, and the display unit 60; the external command unit 40 is electrically connected to A relay state contact, an external command, and an external state contact, all the state contacts are electrically connected to the microprocessor unit 33 by the external command unit 40, analyzed and judged by the microprocessor unit 33, Send a message to the actuation unit 50 and the display unit 60; the actuation unit 50 is electrically connected to the power state detection control unit 30, and is supported by the power circuit 11 or the external support according to the information sent by the microprocessor unit 33 The power supply 20 provides power supply operation, and the actuation unit 50 includes: a locking actuation circuit 51, an opening and closing actuation circuit 52, and a reclosing actuation circuit 53; When there is an abnormal power state, the blocking power supply circuit 54 in the blocking operation circuit 51 is turned on, and the blocking power supply circuit 54 is electrically connected to the power state detection control unit 30 to operate according to the instruction of the microprocessor unit 33, and is electrically connected to activate the blocking Actuating circuit 51, when the blocking actuating circuit 51 is actuated, the opening and breaking actuating circuit 52 and the reclosing actuating circuit 53 are not actuated, and the tripping mechanism 13 of the circuit breaker 12 is blocked; the opening and breaking actuating circuit 52 acts as a power When the circuit 11 stops supplying power, the microprocessor unit 33 inside the power state detection control unit 30 sends a message, and after a set time of the time relay 55, when the load side 17 has no abnormal power, the power supply circuit 56 is electrically operated. Conduction, the electric operation power circuit 56 is electrically connected to the electric operator 15, and the electric operator 15 is actuated according to the instruction of the microprocessor unit 33, and the external support power supply 20 provides power to drive the circuit breaker 12 through the control circuit 32 The electric operator 15 actuates To the on-off position; when the reclosing actuating circuit 53 resumes power supply after the power circuit 11 stops power supply, the reclosing actuating circuit 53 detects the internal microprocessor unit of the control unit 30 according to the external command unit 40 and the power state 33 When it is determined that the state of the power circuit 11 is normal, the microprocessor unit 33 inside the power state detection control unit 30 sends a message, and the power state detection control unit 30 passes through the set time of the time relay 55. The operating power supply circuit 56 is turned on, the reclosing actuating circuit 53 is turned on, the electric power supply of the power circuit 11 or the external support power supply 20 provides power, and the electric operator 15 driving the circuit breaker 12 is actuated to the closed position; the display unit 60 is controlled by The microprocessor unit 33 inside the power state detection control unit 30 sends information to activate; an automatic sequential tripping reclosing device 10, when the power circuit 11 detects an abnormal power state, the blocking actuation circuit 51 is activated to automatically block the The circuit breaker 12, when the power circuit 11 stops supplying power, the power state detection control unit 30 and the external command unit 40 determine that the microprocessor unit 33 sends a message to open and close the circuit breaker 12, which is set by the time relay 55 After a period of time, the electric operation power supply circuit 56 is turned on, the start-off actuating circuit 52 is turned on, and the electric operator 15 of the circuit breaker 12 is powered by the external support power supply 20 to the start-off position. When the power circuit 11 resumes normal power supply After the power state detection control unit 30 and the external command unit 40 determine that the state of the power circuit 11 is normal through the microprocessor unit 33 inside the power state detection control unit 30, a message is sent out, and through the setting of the time relay 55 After a period of time, the electric operation power supply circuit 56 is turned on, the reclosing actuation circuit 53 is turned on, and the power circuit 11 or the external support power supply 20 provides power to drive the electric operator 15 of the circuit breaker 12 to actuate to the closed position.

To sum up, the automatic sequential tripping and reclosing device of this creation further improves the stability and safety of the circuit breaker panel in the power supply system, and has deep industrial applicability. And check the relevant products on the market and the approved patent announcements, did not find the same technical features as the essence of this creation Those that also meet the statutory patent application requirements for novelty and progressiveness. 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: Automatic sequential tripping reclosing device

11: Power circuit

12: circuit breaker

13: escape mechanism

14: Auxiliary contact

15: Electric operator

16: Power side

17: Load side

20: External support power supply

21:Uninterruptible power supply system

22: battery pack

23: Capacitor tripping device

30: Power state detection control unit

31: Voltage detection circuit

32: Control circuit

33: Microprocessor unit

40: External command unit

50: Action unit

51: Locking actuation circuit

52: Start and break actuation circuit

53: Reclosing actuation circuit

54:Lock power circuit

55: Time Relay

56: Electric operation power supply circuit

60: Display unit

70: load side impedance detection circuit

Claims (2)

An automatic sequence trip reclosing device, which is electrically connected to a power circuit, and a circuit breaker is connected to the power circuit. The circuit breaker is equipped with a trip mechanism, auxiliary contacts, and an electric operator; the automatic sequence The tripping reclosing device includes: an external support power supply, a power state detection control unit, an external command unit, an action unit, and a display unit; the external support power supply can be connected to the power supply or capacitor of the uninterruptible power supply system or battery pack tripping device, etc., the external support power supply includes an AC and DC power input unit, and then through the internal step-down and rectification switching power transformation unit, an appropriate DC power supply is output to supply the power state detection control unit and the actuation unit; the power state detection control unit The unit includes a voltage detection circuit, the voltage detection circuit is electrically connected to the power side and the load side of the circuit breaker, and an electronic circuit is embedded in the voltage detection circuit for sensing the power side and the load side of the circuit breaker. The voltage information on the load side, the status signal of each phase sequence of the electronic circuit with power and no power, is electrically connected to a microprocessor unit installed inside the power state detection control unit through a control circuit, and the microprocessor unit The program of the internal key judges and calculates the state of the internal contacts of the circuit breaker according to the state of the voltage signal of each phase sequence of the power supply side and the load side of the circuit breaker under inspection, and judges the power supply side and the load side of the circuit breaker. The abnormal state of the load side, such as at least one of phase loss, reverse phase, reverse power supply, high voltage, low voltage, internal contact welding, etc., the power state detection control unit is electrically connected to the external command unit and the action unit , the display unit and a load-side impedance detection circuit, the load-side impedance detection circuit is electrically connected to the load side, and the internal microprocessor unit of the power state detection control unit sends a power supply to the load side, when the impedance is detected value If it is zero, it means a short circuit or a ground fault state; the external command unit is electrically connected to a relay state contact, an external command, and an external state contact, and the external command unit electrically connects all state contacts to the micro The processor unit is analyzed and interpreted by the microprocessor unit, and sends a message to the actuation unit and the display unit; the actuation unit is electrically connected to the power state detection control unit, and the information sent by the microprocessor unit is obtained by The power circuit or the external support power supply provides power for actuation. The actuation unit includes: a locking actuation circuit, an opening and closing actuation circuit, and a reclosing actuation circuit; when the microprocessor unit detects that the power circuit has When the power state is abnormal, the blocking power supply circuit in the blocking operation circuit circuit is turned on, and the blocking power supply circuit is electrically connected to the power state detection control unit to operate according to the instruction of the microprocessor unit, and is electrically connected to activate the blocking operation circuit. When the actuating circuit is actuated, the on-off actuating circuit and the reclosing actuating circuit do not actuate, and the tripping mechanism of the circuit breaker is blocked; The microprocessor unit sends out a message, and after the set time of a time relay, when there is no abnormal power on the load side, the electric operation power circuit is turned on, and the electric operation power circuit is electrically connected to the electric manipulator, according to the microprocessor The device unit commands to actuate the electric operator, and the external support power supply provides power to drive the electric operator of the circuit breaker to the on-off position through the control circuit; the reclosing actuation circuit resumes power supply after the power circuit stops power supply When the reclosing action circuit judges that the state of the power loop is normal according to the external command unit and the microprocessor unit inside the power state detection control unit, the control circuit and the microprocessor inside the power state detection control unit The unit sends a message to the load side impedance detection circuit to The load side detects the impedance value of the load side line, and the microprocessor unit judges the short circuit or grounding state of the load side line of the circuit breaker. If the power state is normal, the power state detection control unit is set by the time relay After a certain time, the electric operation power circuit is turned on, the reclosing actuation circuit is turned on, the power circuit power supply or the external support power supply provides power, and the electric operator of the circuit breaker is driven to the closed position; the display unit is controlled by the power supply. The microprocessor unit inside the state detection control unit sends information to activate; an automatic sequence trip reclosing device, when the power circuit detects an abnormal power state, the blocking actuation circuit operates to automatically block the circuit breaker, when the power circuit When the power supply is stopped, the circuit breaker must be turned on and off after the power state detection control unit and the external command unit determine through the microprocessor unit that the circuit breaker must be turned on and off. conduction, the electric operator of the circuit breaker is driven to the on-off position by the external support power supply, and when the power circuit resumes normal power supply, the power state detection control unit, the external command unit, and the power state detection control unit The internal microprocessor unit determines that the state of the power circuit is normal, and then the internal microprocessor unit of the power state detection control unit sends a message to the load side for detection through the load side impedance detection circuit, when the power state is normal When the power state detection control unit passes the set time of the time relay, the electric operation power circuit is turned on, the reclosing action circuit is turned on, and the power circuit or the external supporting power supply provides power to drive the electric operator of the circuit breaker actuated to the closed position. An automatic sequential tripping reclosing device, which is electrically connected to a power circuit, and a circuit breaker is connected to the power circuit. The circuit breaker is equipped with a tripping mechanism, auxiliary contacts, Electric manipulator; the automatic sequence tripping reclosing device includes: an external support power supply, a power state detection control unit, an external command unit, an actuating unit, and a display unit; the external support power supply can be connected to the uninterruptible power supply system Or the power supply of the battery pack or the capacitor tripping device, etc., the external support power supply includes an AC and DC power input unit, and then through the internal step-down rectification switching power conversion unit, the output of an appropriate DC power supply for the power state detection control unit and the action unit; the power state detection control unit includes a voltage detection circuit, the voltage detection circuit is electrically connected to the power supply side and the load side of the circuit breaker, and an electronic circuit is embedded in the voltage detection circuit to sense the open circuit The voltage information on the power supply side and the load side of the device, and the state signals of whether there is power or no power in each phase sequence of the electronic circuit, are then electrically connected to a microprocessor provided inside the power state detection control unit through a control circuit unit, the program of the key in the microprocessor unit judges and calculates the state of the internal contacts of the circuit breaker according to the state of the voltage signal of each phase sequence of the power supply side and the load side of the circuit breaker under inspection, and judges the state of the circuit breaker. In the circuit breaker, the power supply side and the load side have abnormal states, such as at least one of phase loss, reverse phase, reverse power supply, high voltage, low voltage, internal contact welding, etc., and the power state detection control unit is electrically connected to the An external command unit, the actuating unit, and the display unit; the external command unit is electrically connected to a relay state contact, an external command, and an external state contact, and the external command unit electrically connects all the state contacts to the microprocessor unit, analyzed and interpreted by the microprocessor unit, and send a message to the actuation unit and the display unit; the actuation unit is electrically connected to the power state detection control unit, according to the microprocessor unit The information sent is powered by the power circuit or the external support power supply. The actuating unit includes: a locking actuating circuit, an opening and closing actuating circuit, and a reclosing actuating circuit; When an abnormal power state is detected in the power circuit, the blocking power supply circuit in the blocking operation circuit circuit is turned on, and the blocking power supply circuit is electrically connected to the power state detection control unit to operate according to the instruction of the microprocessor unit, and is electrically connected to activate the blocking operation circuit, when the locking actuating circuit is actuated, the opening and closing actuating circuit and the reclosing actuating circuit are not actuated, and the tripping mechanism of the circuit breaker is locked; The microprocessor unit inside the state detection control unit sends out a message. After a set time of the relay, when there is no abnormal power on the load side, the electric operation power circuit is turned on, and the electric operation power circuit is electrically connected to the electric operator. , actuate the electric operator according to the instruction of the microprocessor unit, and the electric operator of the circuit breaker is driven to the on-off position by the external support power supply through the control circuit; When the power supply is restored after power supply, the reclosing actuation circuit judges that the state of the power circuit is normal according to the external command unit and the microprocessor unit inside the power state detection control unit, and the microprocessing unit inside the power state detection control unit After the power state detection control unit has passed the set time of the time relay, the electric operation power circuit is turned on, the reclosing actuation circuit is turned on, and the power circuit power supply or the external support power supply provides power to drive The electric operator of the circuit breaker is actuated to the closed position; the display unit is actuated by information sent by the microprocessor unit inside the power state detection control unit; an automatic sequence trip reclosing device, when the power circuit detects an abnormality power status, The locking actuation circuit automatically locks the circuit breaker. When the power circuit stops supplying power, the power state detection control unit and the external command unit determine to send a message through the microprocessor unit to open and close the circuit breaker. Through the time relay After the set time, the electric operation power supply circuit is turned on, the start-off actuating circuit is turned on, and the electric operator of the circuit breaker is driven to the start-off position by the external support power supply. When the power circuit returns to normal power supply, the power state The detection control unit and the external command unit determine that the state of the power circuit is normal and send a message through the microprocessor unit inside the power state detection control unit. The closing actuation circuit is turned on, and the power circuit or the external support power supply provides power to drive the electric operator of the circuit breaker to the closed position.

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