JPH08223773A - System protective system employing semiconductor breaker - Google Patents

Abstract

PURPOSE: To obtain a system protective system in which repair and inspection can be carried out while disconnecting a semiconductor breaker from the system upon occurrence of abnormality in the semiconductor breaker by monitoring the operating state of the semiconductor breaker, deciding whether the semiconductor breaker has failed based on a signal receiving therefrom and then controlling the semiconductor breaker or a switchgear. CONSTITUTION: An breaker protective system 30 monitors a signal indicative of the operating conditions, e.g. current, voltage and temperature, of a semiconductor breaker 20 thus deciding whether an abnormality is present therein. Operation of the semiconductor breaker 20 or a switchgear 40a is then determined based on the decision results and a make/break instruction signal for the semiconductor breaker 20 or the switchgear 40a is delivered to a breaker control system 21. At the same time, the type, location or the operating conditions of the semiconductor breaker 20 is notified to the outside. When the failure has effect on the conduction, transmission of power is switched to other system.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a system protection device used in a power system for interrupting a current by a semiconductor element, and particularly, when a failure occurs in the system protection device, the influence on the power system is minimized. The present invention relates to a protection system that can be suppressed to the limit and a control method thereof.

[0002]

2. Description of the Related Art When a system protection device that cuts off current by a semiconductor element (hereinafter referred to as a semiconductor type breaker) detects the occurrence of a short-circuit accident, it cuts off the current at a current cut-off part made up of semiconductor elements, causing an overcurrent. It is possible to suppress the voltage drop and to prevent the voltage drop of the upper system. In particular, in the semiconductor type breaker that forcibly cuts off the current using the self-extinguishing type element, if the current is cut off at the rising edge, the system can be protected without causing a large overcurrent, and it was connected to the same bus as the fault line. The voltage drop time of a healthy line can be greatly reduced.

[0003]

However, conventionally, a countermeasure against a failure of a semiconductor element when a load current is constantly applied is not sufficiently studied. For example, a short-circuit failure occurs when the semiconductor element fails. Then, there is a problem in that the short-circuit failure protection cannot be performed because the semiconductor element does not have a current interruption capability, and there is a possibility that the reliability of the system by the semiconductor interruption device cannot be sufficiently improved.

[0004]

In order to solve the above problems, a monitoring unit for monitoring the operating state of a semiconductor type breaker,
By providing a protection system that includes a determination unit that determines a failure of the semiconductor interruption device based on a signal from the monitoring device and a control unit that controls the semiconductor interruption device and the switchgear according to the determination result, the semiconductor interruption device is provided. Even if an abnormality occurs, the semiconductor breaker and switchgear are controlled so that the power transmission of the grid is not adversely affected, the semiconductor breaker is separated from the grid, and the semiconductor breaker can be repaired and inspected. To do.

[0005]

By using the above means, it is possible to prevent a failure in power transmission caused by a failure of the semiconductor type breaker. In particular, since the semiconductor breaking device loses its breaking ability due to an element failure, it is possible to improve the reliability of the semiconductor breaking device by detecting the element failure by the time when the current interruption such as the occurrence of a short circuit failure becomes necessary. it can.
Further, by using the switchgear, it can be easily separated from the system, and the semiconductor type breaker can be repaired and inspected even during system operation.

[0006]

EXAMPLES Examples of the present invention will be shown below. FIG. 1 shows an example of application of a system protection system using a semiconductor type breaker according to the present invention to a power system. The system protection system 10 using a semiconductor type breaker includes a semiconductor type breaker 20, a switchgear 40a, a breaker control system 21, and a breaker protection system 30. Semiconductor type breaker 20
Protects the short-circuit fault of the power system 1 by interrupting the short-circuit current that flows when the short-circuit fault 3 occurs in the power system 1 with a breaker using a semiconductor. The switchgear 40a connects the semiconductor type breaker 20 to the power system 1 or the power system 1
Separate from. The circuit breaker control system 21 monitors the state of the power system 1 and, if a short circuit fault is detected, controls the semiconductor type circuit breaker 20 and the switchgear 40a to protect the system. In addition, the circuit breaker control system 21 monitors the signal from the current measuring device 50a or the signal from the voltage measuring device 50b of the power system 1 and determines from each signal that a short-circuit fault has occurred in the power system 1. First, the semiconductor type breaker 20 is controlled to cut off the short circuit current to protect the power system 1 from a short circuit failure. The circuit breaker protection system 30 monitors the state of the semiconductor circuit breaker 20, judges the abnormality of the semiconductor circuit breaker 20 by this monitoring, and depending on the result of this judgment, the semiconductor circuit breaker 20 or the switchgear 40a.
Is sent to the circuit breaker control system 21 to notify the abnormality of the semiconductor circuit breaker 20 to the outside to protect the semiconductor circuit breaker. Further, the circuit breaker protection system 30 monitors signals indicating operating states of the semiconductor circuit breaker 20, such as current, voltage across both ends, and temperature, to determine whether the semiconductor circuit breaker 20 is abnormal. Based on the determination result, the operation of the semiconductor breaker 20 or the switchgear 40a is determined, and an opening / closing command signal of the semiconductor breaker 20 or the switchgear 40a is sent to the breaker control system 21. At the same time, the type, position or operating state of the failure of the semiconductor type breaker 20 is notified to the outside, and when there is a problem in energization due to the influence of the failure, control is performed to switch to power transmission from another system. The circuit breaker control system 21 turns off the semiconductor type circuit breaker 20 based on a signal sent from the circuit breaker protection system 30 or opens the switchgear 40a to stop the energization, so that the semiconductor circuit breaker 20 operates. It is possible to prevent the influence of an abnormality from affecting a healthy line of the power system 1.
This configuration is the minimum configuration example of the system protection system using the semiconductor type breaker, and the reliability of the power system can be improved at the minimum cost.

FIG. 2 shows an example of the structure of the semiconductor type breaker 20 shown in FIG. The semiconductor breaker 20 includes a current breaker 22 and a current breaker 22 configured by using semiconductor elements.
And a non-linear resistance 24 connected in parallel to the current interrupting section 22. Current cutoff unit 22
Is configured by connecting self-arc-extinguishing type semiconductor elements in anti-parallel, cuts off a short-circuit current of a power system, and eliminates a short-circuit state of the system at high speed, thereby suppressing a decrease in system voltage. Also,
The current interruption unit 22 sends a signal including information about the temperature of the current interruption unit 22, the voltage across both ends, and the flowing current to the interruption device protection system 30, and is controlled by the interruption device control system 21. The cooling device 22 cools the heat generated by the conduction loss of the current cutoff unit 22. Further, the cooling device 22a is
A signal including at least one piece of information about the temperature and pressure of the cooling medium of the cooling device 22a is sent to the shutoff device protection system 30 to monitor the operating state. The non-linear resistance 24 protects the current interruption part 22 from an overvoltage generated at both ends of the current interruption part 22, and interrupts a signal including at least one information of temperature, both-end voltage and current of the non-linear resistance 24. It is sent to the device protection system 30 and is monitored for operating conditions. By configuring the semiconductor type breaker 20 with such a configuration, short circuit or opening of the current breaker 22 and the non-linear resistance 24, abnormal overheating or pressure excess of the cooling medium of the cooling device 22a are detected, and presence or absence of these failures is detected. It is possible to prevent the operation of the electric power system 1 from being affected and to improve the reliability of the electric power system 1 by determining whether or not the electric power cutoff unit 22 or the switchgear 40a is opened and closed. The current cutoff unit 22 may be a normal thyristor (for example, an optical thyristor).

FIG. 3 shows another structural example of the semiconductor type breaker 20 shown in FIG. The semiconductor type breaker 20 is composed of a current breaker 22 configured by using a semiconductor element, a cooling device 22 a for cooling the current breaker 22, a current limiting element 23 connected in parallel to the current breaker 22, and a non-linear resistor 24. To be done. The current limiting element 23 sends a signal including at least one information of temperature, voltage across the terminal and current of the current limiting element 23 to the circuit breaker protection system 30 and is monitored by the circuit breaker protection system 30. By configuring the semiconductor type breaker 20 with such a configuration, a short-circuit current generated due to a short-circuit fault of the power system 1 is cut off by the current cut-off unit 22, commutated to the current limiting element 23, and current-limited, During the time when protection coordination with the receiving end circuit breaker is taken, the burden on the equipment due to the electromagnetic force generated by the short circuit current can be reduced without flowing a large short circuit current on the downstream side, and the voltage of the sound line of the same bus bar can be reduced. It can prevent the deterioration.

FIG. 4 is a structural example of the circuit breaker protection system 30 in FIG. Circuit breaker protection system 30
Is a monitoring unit 30a that monitors the operating state of the semiconductor breaker 20, and a determination unit 30 that determines a failure by monitoring the monitoring unit.
b, and a control command output unit 30c that issues a command to control the current interruption unit 22 and the switchgear 40a based on the determination result of the determination unit.
Composed of The monitoring unit 30a receives a signal including the operating state of the semiconductor breaker 20 or the operating state of the breaker control system 21, records the operating state of the semiconductor breaker 20 or the breaker control system 21 while constantly monitoring, The result is passed to the determination unit 30b. The determination unit 30b determines the presence / absence and type of an abnormality of the semiconductor-type circuit breaker 20 and the circuit breaker control system 21, the location of the abnormality, and the countermeasure against the abnormality from the monitoring result of the monitoring unit 30a,
The result is passed to the control command output unit 30c. The control command output unit 30c sends an opening / closing control command to the semiconductor breaking device 20 or the switching device 40a to the breaking device control system 21 based on the determination result of the determination unit 30b. By configuring the circuit breaker protection system 30 as described above, the maintenance unit, the determination unit, and the control command output unit are individually maintained and inspected during maintenance and inspection of the circuit breaker protection system, and when an abnormality is recognized. , The unit only needs to be replaced, and maintenance and inspection work can be performed easily and quickly.

FIG. 5 shows a configuration example of a circuit breaker protection system 31 in which the circuit breaker protection system 30 shown in FIG. 1 is provided with the function of the circuit breaker control system 21. By combining the circuit breaker protection system 30 and the circuit breaker control system 21 into one device, the entire device can be downsized, and the control time delay due to communication between the circuit breaker protection system 30 and the circuit breaker control system 21 can be reduced. When the current consumption is reduced and high-speed current interruption is required, the operation can be started quickly.

FIG. 6 shows an example of the configuration of a system protection system using the interruption device protection system 31 shown in FIG. The circuit breaker protection system 31 is configured by a control unit 30d that controls the current breaker 22 (see FIG. 3) or the switchgear 40a based on the determination result of the determination unit 30b. The control command output unit 30d sends an opening / closing control signal to the semiconductor type breaking device 20 and the opening / closing device 40a based on the determination result of the determination unit 30b. Similar to the configuration of FIG. 4, this configuration also allows easy and quick maintenance and inspection.

FIG. 7 shows another embodiment of the present invention, in which a switchgear 40 is provided on the upper side of the system in which the semiconductor type breaker 20 is installed.
The switchgear 40b is connected to the lower side a. The switchgear 40a, 40b is monitored by the circuit breaker protection system 30 via the circuit breaker control system 21, and is controlled by the circuit breaker control system 21. With such a configuration, the semiconductor breaker 20 can be electrically and easily separated from the system by opening the opening / closing devices 40a and 40b when the semiconductor breaker 20 is repaired or inspected.

FIG. 8 shows a switchgear 40 in parallel with the configuration of FIG.
It is a structural example when c is connected. During normal operation of the system, the switchgear 40a, 40b is closed and the switchgear 40c is opened, and a load current is supplied. Semiconductor type breaker 2
When repairing or inspecting 0, the switchgear 40a,
By opening 40b and simultaneously closing the switchgear 40c, power can be transmitted to the load while the semiconductor type breaker 20 is separated from the system.

FIG. 9 shows the configuration of FIG. 1 in which the power supplies for driving the semiconductor type circuit breaker 20, the circuit breaker control system 21, and the circuit breaker protection system 30 are set to the upper side of the system in which the semiconductor circuit breaker 20 is installed. It is an example of the configuration obtained more. With such a configuration, the system for supplying power is protected by the system protection system 10 using the semiconductor type breaker of the present invention, so that a power supply with less voltage drop due to system failure can be obtained, and The reliability can be improved. In this case, by using a battery or an uninterruptible power supply that can supply power for a time longer than the momentary power failure of the system, the control power supply can maintain control even when the power is lost for a time longer than the momentary voltage drop. The reliability can be improved.

FIG. 10 shows that the power supply for driving the semiconductor type circuit breaker 20, the circuit breaker control system 21 and the circuit breaker protection system 30 is obtained from a power system 2 different from the system in which the semiconductor circuit breaker 20 is installed. In the configuration example, even if an abnormality occurs in the system in which the semiconductor breaker 20 is installed, the semiconductor breaker 20, the breaker control system, and the breaker protection system can operate normally, and reliability is improved. Can be improved. Further, reliability can be further improved by using the power supply shown in FIG. 9 or a power supply device which has a charging function itself and can supply electric power for a predetermined time.

11 to 18 show an example of the present invention, FIG.
An operation example of a system protection system using the semiconductor type breaker of FIG. The semiconductor type breaker 20 in FIG. 1 is configured as shown in FIG. In addition, this operation example is a case in which the current interruption unit 22 in FIG. 3 is configured by connecting self-arc-extinguishing type semiconductor elements in anti-parallel.

FIG. 11 shows an operation example (101) during normal operation after the start (100). The circuit breaker control system (21 in FIG. 1) of the system protection system using the semiconductor circuit breaker monitors the operating state of the power system (102), and if a short circuit current of the power system is detected (103), a short circuit fault occurs. The operation moves to time operation 111. In parallel with this, the circuit breaker protection system (30 in FIG. 1) of the system protection system using the semiconductor circuit breaker monitors the operating state of the semiconductor circuit breaker (104), and When the abnormality of the semiconductor element used in the current cutoff unit (22 in FIG. 3) is detected (105), the operation 112 at the time of current cutoff unit abnormality is started. Similarly, when an abnormality is detected in the cooling device (22a in FIG. 3) of the current interrupting unit (106), the operation proceeds to operation 113 when the cooling device is abnormal, and an abnormality in the switchgear (40a in FIG. 1) is detected. In the case of (107), the operation proceeds to the operation 114 when the switchgear is abnormal, and when the abnormality of the control unit (21 and 30 in FIG. 1) is detected (108), the operation 11 when the control unit is abnormal
5, when the loss of the control power source (not shown) is detected (109), the operation 116 when the control power source is lost
When the abnormality of the non-linear resistance 24 is detected (see 11
In 0), the operation 117 when the non-linear resistance is abnormal is started.

FIG. 12 shows the operation 111 at the time of short circuit failure in FIG. The circuit breaker control system 21 that has detected the short-circuit current of the power system is the current circuit breaker 2 of the semiconductor type circuit breaker.
2 is turned off (111a), and if turned off successfully (111a)
b), the current interrupting unit interrupts the short-circuit current, commutates to the current limiting element 23, and performs the current limiting protection operation (111c). If the temperature of the current limiting element during the current limiting operation is normal (111d), the current limiting protection operation (111c) is performed until the elimination of the short circuit fault is confirmed. When the elimination of the short circuit fault is confirmed (111e), the current cutoff unit is turned on. Turned on (111f), and if turned on successfully (111f)
g) Then, return to the operation 101 during normal operation. If the current cutoff unit fails to turn off (111b), it is confirmed whether the gate signal is normal (111h), and if it is normal, the short circuit current is cut off by an element in the direction opposite to the semiconductor element that failed to turn off ( 1
11i), if the interruption is successful, the current is commutated to the current limiting element and the current is temporarily limited, so the switchgear 40a is opened (1
11j), externally informs which semiconductor element has failed to turn off and has failed (111k), and requests repair.
(111m). If the current breaker fails to turn on (111
g), try to turn on (111n), and if on is successful (11
1o), and returns to operation 101 during normal operation. If turning on again fails (111o), open the switchgear (111j),
It informs the outside which semiconductor element has failed and cannot be turned on (111k), and requests repair (111k).
m). When the gate signal of the current cutoff unit is not normal (111h), the gate is again turned off (111p), and when the off is successful (111q), the process returns to the determination 111h whether the gate signal is normal. If turning off again fails ((1
11q), and proceed to shut-off (111i) in the reverse direction.
If the circuit breaks in the reverse direction (111i), the circuit breaker on the upper side of the system is opened (111r), the energization is stopped, and the process proceeds to the operation 111j for opening the switchgear.

FIG. 13 shows the operation (112) when the current interrupting part in FIG. 11 is abnormal. The circuit breaker protection system that detects an abnormality such as a short circuit of the semiconductor element used in the current circuit breaker 22 of the semiconductor circuit breaker switches to power transmission from another system (112a) and opens the switchgear 40a (112a).
b), externally informing what kind of abnormality has occurred in the semiconductor element and having failed (112c), and requesting repair (11).
2d).

FIG. 14 shows the operation (113) when the cooling device in FIG. 11 is abnormal. Cooling device 22a for current interruption unit
The disconnector protection system that detected an abnormality such as overheating or overpressure of the switch switched to power transmission from another system (113a), opened the switchgear 40a (113b), and caused any abnormality in the cooling device and failed. It is reported to the outside (113c) and repair is requested (113d).

FIG. 15 shows the operation (114) when the switchgear in FIG. 11 is abnormal. The circuit breaker protection system that detects the abnormality of the switchgear 40a turns off the current breaker (11
4a), energization is stopped by opening an external switchgear (not shown) (114b), abnormality of the switchgear is notified to the outside (114c), and repair is requested (114d).

FIG. 16 shows the operation (115) when the control unit in FIG. 11 is abnormal. The current interruption unit and the switchgear of the semiconductor type interruption device are automatically turned off after confirming the loss of the signals from the control units 21 and 30, and an abnormality occurs in the control unit and the control signal is lost. In this case, switching to power transmission from another system (115a), turning off the current interruption unit (115b), opening the switchgear (115c) to stop energization, and externally reporting an abnormality in the control unit (115d),
Request repair (115e).

FIG. 17 shows the operation (116) when the control power supply is lost in FIG. The shutdown device protection system that detects the loss of the control power supply (not shown) switches the power supply to the battery or the backup power supply of another system (116a), and operates with the backup power supply until the regular power supply is restored. (101) After confirming that the regular power supply is restored (116b), switch to the regular power supply (116).
c) Return to normal operation (101).

FIG. 18 shows the operation (117) when the nonlinear resistance is abnormal in FIG. The circuit breaker protection system that has detected the abnormality of the nonlinear resistance 24 switches to power transmission from another system (117a), and turns off the current circuit breaker (117a).
b), the energization is stopped by opening the switchgear (117
c), the abnormality of the non-linear resistance is notified to the outside (117d),
Request for repair (117e).

[0025]

According to the present invention, the reliability and maintainability of the semiconductor type current limiting interrupter can be improved.

[Brief description of drawings]

FIG. 1 is a block diagram of a system protection system using a semiconductor type breaker according to the present invention.

FIG. 2 is a block diagram of a semiconductor type breaker used in the present invention.

FIG. 3 is another block diagram of the semiconductor type breaker used in the present invention.

FIG. 4 is an explanatory diagram of a circuit breaker protection system used in the present invention.

FIG. 5 is a block diagram of a system protection system using a semiconductor type breaker according to the present invention.

FIG. 6 is an explanatory diagram of a circuit breaker protection system used in the present invention.

FIG. 7 is a block diagram of a system protection system using a semiconductor type breaker according to the present invention.

FIG. 8 is a block diagram of a system protection system using a semiconductor type breaker according to the present invention.

FIG. 9 is a block diagram of a system protection system using a semiconductor type breaker according to the present invention.

FIG. 10 is a block diagram of a system protection system using the semiconductor type breaker according to the present invention.

FIG. 11 is a flow chart during normal operation of the system protection system using the semiconductor type breaker according to the present invention.

FIG. 12 is a flowchart of an operation at the time of a short circuit failure of the system protection system using the semiconductor type breaker according to the present invention.

FIG. 13 is a flowchart of the operation of the system protection system using the semiconductor interruption device of the present invention when the current interruption unit is abnormal.

FIG. 14 is a flowchart of an operation example when the cooling device is abnormal in the system protection system using the semiconductor interruption device according to the present invention.

FIG. 15 is a flowchart of an operation example when the switchgear of the system protection system using the semiconductor type breaker of the present invention is abnormal.

FIG. 16 is a flowchart of an operation example when the control unit of the system protection system using the semiconductor type breaker according to the present invention is abnormal.

FIG. 17 is a flowchart of an operation example when the power supply for control of the system protection system using the semiconductor interruption device of the present invention is lost.

FIG. 18 is a flowchart of an operation example of a system protection system using the semiconductor type breaker according to the present invention when a nonlinear resistance is abnormal.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Electric power system, 10 ... System protection system using a semiconductor type breaker, 20 ... Semiconductor type breaker, 21 ... Breaker control system, 40a ... Switchgear, 50a ... Current measuring device, 50b ... Voltage measuring device.

Claims (36)

[Claims] 1. A system protection system using a semiconductor type breaker that protects against a short-circuit fault in the power system by interrupting a short-circuit current generated by a short-circuit fault in the power system with a breaker configured using semiconductor elements. In the above, a monitoring unit that monitors the operating state of the semiconductor-type circuit breaker, a determination unit that determines a failure of the semiconductor-type circuit breaker based on the monitoring of the monitoring unit, and the semiconductor-type shutdown based on the result of the determination by the determination unit. It is configured by a control unit that controls a current interrupting unit of the device, prevents the influence of the failure of the semiconductor type current limiting interrupter from affecting the power system, and notifies the failure of the semiconductor interrupting device to the outside, A system protection system using a semiconductor-type circuit breaker, which uses a circuit-breaker protection system that performs control to protect the circuit breaker. 2. The semiconductor type breaker according to claim 1, wherein a non-linear resistance for protecting the breaking section from an overvoltage is connected in parallel with a current breaking section constituted by using the semiconductor element. System protection system using a breaker. 3. The semiconductor type interrupting device according to claim 1, wherein the semiconductor type interrupting device comprises a current interrupting part using a semiconductor element and a current limiting device connected in parallel to the current interrupting part. System protection system. 4. The system protection system according to claim 1, wherein said semiconductor type breaker uses a semiconductor type breaker composed of a current breaking part using a semiconductor element and a parallel connection body of a non-linear resistance and a current limiting element. system. 5. The semiconductor breaker according to claim 1, 2, 3 or 4, for cooling heat generated by a conduction loss of the current breaker in the current breaker composed of a semiconductor element. A system protection system that uses a semiconductor-type circuit breaker configured by connecting a cooling device. 6. The current cut-off section of claim 1, 2, 3 or 4 which is formed by using a semiconductor element of the semiconductor type breaker is formed by connecting self-extinguishing type semiconductor elements in antiparallel. System protection system that uses the semiconductor cutoff device. 7. The system protection system according to claim 6, wherein the self-extinguishing type semiconductor element of the current interrupting section uses a semiconductor type interrupting device configured by using a thyristor, a gate turn-off thyristor and a transistor. 8. The breaker control system according to claim 1, 2, 3 or 4, wherein the semiconductor type breaker has at least one switchgear connected in series, and the switchgear has a breaker control system of the semiconductor breaker. System protection system using a semiconductor-type circuit breaker controlled by. 9. The power supply for driving the system protection system according to claim 1, 2, 3 or 4, wherein power is obtained from at least a system higher than the semiconductor type circuit breaker,
A system protection system using a semiconductor interruption device using either a power source that obtains power from a system independent of the system in which the semiconductor interruption device is installed, or a power source that has a charging function itself and can supply power for a predetermined time . 10. The current cutoff of the semiconductor breaker according to claim 1, wherein at least voltage or current of a power cutoff system using the semiconductor cutoff device is monitored, and when it is detected that a short-circuit current flows in the power cutoff system. A system protection system using a semiconductor type breaker using a circuit breaker control system that cuts off a short-circuit current by a section and protects a short-circuit fault of the power system. 11. The system protection system according to claim 1, wherein the monitoring unit uses at least a voltage or current of the power system and a semiconductor interruption device that monitors an operating state of the semiconductor interruption device. 12. The system protection system according to claim 6, wherein the monitoring unit monitors the gate signal of a current interrupting unit using the self-extinguishing type element of the semiconductor interrupting device. . 13. The system protection system according to claim 1, wherein the determination unit determines whether at least a short-circuit failure of the power system or a failure of the semiconductor interrupter is detected by monitoring of the monitoring unit. . 14. The short circuit failure of the power system according to claim 1, wherein the circuit breaker protection system controls ON / OFF of a current circuit breaker of the semiconductor circuit breaker according to a result of the judgment made by the judging section. And a system protection system using the semiconductor type breaker for protecting the semiconductor type breaker. 15. The circuit breaker protection system according to claim 2, wherein at least the current flowing through the semiconductor circuit breaker, the temperature of the current circuit breaker, the voltage at both ends, and the temperature of the non-linear resistance, the voltage at both ends, and the current. A system protection system using a semiconductor type breaker for monitoring the operation of the semiconductor type breaker using any one of them as an input signal. 16. The system protection system according to claim 3, wherein the monitoring unit of the semiconductor breaker uses at least a semiconductor breaker that monitors an operating state of the current breaker or the current limiting element. 17. The system protection according to claim 3, wherein the determination unit of the semiconductor type breaker uses a semiconductor type breaker to determine a failure of the current cutoff unit or the current limiting element by monitoring of the monitoring unit. system. 18. The control unit of the semiconductor type interrupting device according to claim 3, wherein at least the current interrupting unit or the switchgear is controlled by the determination of the determining unit, and the short circuit current is interrupted by the current interrupting unit. , A system protection system using a semiconductor type breaker for suppressing short circuit faults in the power system by suppressing the current by commuting to the current limiting element. 19. The circuit breaker protection system according to claim 4, wherein at least a current flowing through the semiconductor circuit breaker, a temperature of a current circuit breaker of the semiconductor circuit breaker, a voltage across both ends, and a current of the semiconductor circuit breaker. Temperature of current limiting element,
A system protection system using a semiconductor breaker that monitors, as an input signal, either one of the voltage and current across the terminal, the temperature of the non-linear resistance, and the voltage and current across the terminal. 20. The short-circuit fault according to claim 4, wherein the operating state of the power system is monitored during operation of the semiconductor type breaker during normal operation, and if a short-circuit current due to a short-circuit fault of the power system is detected. A system protection system using a semiconductor-type circuit breaker that uses a circuit breaker control system that operates at the time. 21. The operation of the circuit breaker control system at the time of a power system short-circuit fault according to claim 20, wherein the self-extinguishing type semiconductor element of the current circuit breaker of the semiconductor type circuit breaker is turned off, and if it is turned off successfully. If the temperature of the current limiting element is within a specified value during the current limiting protection operation, the short circuit current is commutated to the current limiting element to perform the current limiting protection operation. Continues the current limiting protection operation until it confirms the elimination of the short-circuit fault, and after confirming the elimination of the short-circuit fault, turns on the self-extinguishing type semiconductor element again, and if it is successfully turned on, the operation during the normal operation System protection system that uses a semiconductor-type circuit breaker to control the system. 22. In claim 20, when the self-extinguishing type semiconductor element fails to turn off, an operation at the time of failure to turn off is performed, and an abnormal temperature of the current limiting element is detected during the current limiting protection operation. If the current limit element temperature is abnormal, the self-extinguishing semiconductor element fails to turn on, and if it fails to turn on, it operates when it fails to turn on. A system using a semiconductor breaker using a control system. Protection system. 23. The circuit breaker control system according to claim 20, wherein if the gate signal of the current circuit breaker is normal when the current circuit breaker fails to turn off in the event of a short circuit failure, the current circuit breaker is in the opposite direction. Since the short-circuit current is interrupted by the semiconductor element and is temporarily limited by the current limiting element, the switchgear is opened during that time to stop energization, and the failure of the semiconductor element that failed to turn off is externally reported. A system protection system that uses a semiconductor breaker that notifies you and prompts repairs. 24. The circuit breaker control system according to claim 20, wherein when the current breaker fails to turn off at the time of a short circuit failure,
If the gate current is abnormal, it is turned off again when the polarity is opposite to that when the turn-off fails, the switchgear is opened, the energization is stopped, and the circuit that generates the gate current has failed. System protection system that uses a semiconductor-type circuit breaker to notify the outside to prompt repair. 25. The circuit breaker control system according to claim 20, wherein when the temperature of the current limiting element is abnormal, the switching device is switched to separate the semiconductor type circuit breaker from the system, and the current limiting element has failed. To the outside,
A system protection system that uses a semiconductor type breaker that prompts repairs. 26. The circuit breaker control system according to claim 20, wherein when the semiconductor circuit breaker starts to energize, the operation at the time of failure in the turn-on is turned on again, and when successful, the operation at the time of normal operation. Returning to step 2, if the second turn-on fails, the switching device is switched to start and stop energization, and a circuit for generating the gate current is informed to the outside that a failure has occurred, and control for prompting repair is performed. System protection system using semiconductor type circuit breaker with circuit breaker control system. 27. The semiconductor device according to claim 4, wherein the circuit breaker protection system monitors an operating state of the semiconductor type circuit breaker during operation during normal operation, and is used for a current circuit breaker of the semiconductor circuit breaker. A system protection system that uses a semiconductor type breaker that operates when an abnormality occurs in the current breaker when an abnormality is detected in the element. 28. The circuit breaker protection system according to claim 27, when the current interrupting section is abnormal, switches the switchgear to stop energization, informs the outside of the failure of the current interrupting section, and repairs. System protection system that uses a semiconductor-type disconnection device that prompts the emergency. 29. The cooling device according to claim 5, wherein the circuit breaker protection system monitors the operating state of the semiconductor type circuit breaker during operation during normal operation and cools the current circuit breaker of the semiconductor circuit breaker. A system protection system using a semiconductor-type circuit breaker that operates when a cooling device has an abnormality when at least an abnormal temperature or an abnormal pressure is detected. 30. The circuit breaker protection system according to claim 29, when the cooling device is abnormal, switches the switching device to stop energization, notifies the outside that the cooling device has failed, and prompts repair. A system protection system that uses a semiconductor-type circuit breaker for control. 31. The circuit breaker protection system according to claim 8, wherein the operating state of the semiconductor type circuit breaker is monitored during operation during normal operation, and when an abnormality such as inability to open / close the switch is detected, the circuit breaker is opened / closed. A system protection system that uses a semiconductor breaker that operates in the event of a device failure. 32. The circuit breaker protection system according to claim 31, wherein when the switchgear is abnormal, the current breaker of the semiconductor type circuit breaker is turned off, and the energization is stopped by an external switchgear. A system protection system that uses a semiconductor-type circuit breaker to notify the outside of the failure of the equipment and prompt repair. 33. The circuit breaker protection system according to claim 7, wherein the operating state of the semiconductor type circuit breaker is monitored during operation during normal operation, and at least the control signal is lost to the control unit of the semiconductor type circuit breaker. Alternatively, a system protection system using a semiconductor type breaker that operates when the control unit is abnormal when an abnormality such as overheating is detected. 34. The circuit breaker protection system according to claim 33, wherein, when the control unit is abnormal, the current breaker unit and the switchgear of the semiconductor type breaker are automatically operated when a signal from the control unit is lost in advance. A system protection system using a semiconductor type breaker that is turned off to notify the outside that the control unit has failed to prompt repair. 35. The circuit breaker protection system according to claim 1, wherein the operating state of the semiconductor type circuit breaker is monitored during operation during normal operation, and when the control power supply for the semiconductor type circuit breaker is confirmed to be lost. , A system protection system using a semiconductor breaker that moves to the operation when the control power supply is lost. 36. The circuit breaker protection system according to claim 35, when the control power source is lost, switches to a backup power source, waits for the regular power source to return while operating in the normal operation, and returns to the normal state. A system protection system using a semiconductor type breaker that switches to a normal power supply and returns to the operation during the normal operation when the power supply is restored.