CN101587795B - A circuit breaker and a system having the circuit breaker - Google Patents

Abstract

An embodiment of the invention discloses a circuit breaker and a system having the circuit breaker, comprising a line breaker operating mechanism, a resistor breaker operating mechanism, a resistor breaker transmission system, a line breaker transmission system, a resistor breaker and a line breaker, wherein the line breaker transmission system drives the line breaker to carry out switching on andoff operations by receiving the operating power produced by the line breaker operating mechanism; and the resistor breaker transmission system drives the resistor breaker to carry out switching on an d off operations by receiving the operating power produced by the resistor breaker transmission system. In the embodiment of the invention, the resistor breaker and the line breaker are respectively controlled by different operating mechanism and transmission system, thereby avoiding the problem of increased processing difficulty of workpieces of operating mechanism caused by too large operating power when the operating power is produced by just one operating mechanism.

Description

A circuit breaker and a system having the circuit breaker

technical field

The present invention relates to the technical field of GIS (Gas Insulated Switchgear, sulfur hexafluoride enclosed combined electrical appliance), more specifically, to a circuit breaker for UHV GIS and a system with the circuit breaker.

Background technique

GIS is the organic combination of primary equipment in a substation except transformers, including circuit breakers, disconnectors, grounding switches, voltage transformers, current transformers, lightning arresters, busbars, cable terminals, inlet and outlet bushings, etc. into a whole. Mainly combine the bus bar, circuit breaker, CT, PT, isolating switch, and lightning arrester together, which is the switch station that we often see, also called high-voltage power distribution device.

In the high-voltage power distribution device, due to the opening and closing operation of the circuit breaker, the operating overvoltage will be caused, resulting in damage to the transmission line and the high-voltage switch. To form a resistance fracture, open and close the resistance fracture and the main fracture of its own circuit. The SF ₆ circuit breaker of the 1100kV UHV GIS, due to the high voltage level, has a considerable operating overvoltage, and the parallel resistance is the basic guarantee for opening and closing.

In the prior art, the circuit breaker includes an operating mechanism, a resistance break transmission system and a main break transmission system. The main break and the resistance break are driven by the same operating mechanism. Two sets of transmission systems composed of rods and so on are used to respectively realize the opening and closing operations of the main fracture and the resistance fracture, as shown in Figure 1. The operating work of the operating mechanism is input from point A, and the CF and DE connecting rods are driven to move through the crank arm BOD, and the CF and DE connecting rods respectively drive the movement of the main fracture movement component and the resistance fracture movement component to complete the main fracture N and resistance fracture M points, Closing operation.

The driving form shown in Figure 1 is applicable to most circuit breakers with resistors, but the operation work required to open the SF ₆ circuit breaker of 1100kV UHV GIS is very large, which causes the size of the operating mechanism to be too large, which is harmful to the processing Technology has put forward greater requirements, and it will also make it difficult to ensure stable and reliable requirements for the action of the operating mechanism.

Contents of the invention

In view of this, the embodiment of the present invention provides a circuit breaker for UHV GIS and a system with the circuit breaker, so as to solve the existing problems in the prior art because an operating mechanism is used to drive the main break and the resistance break through the transmission system. , which brings about the problem that the workpiece size of the operating mechanism is too large and the processing difficulty is increased due to the excessive operation work.

The embodiment of the present invention is realized like this:

A UHV GIS circuit breaker includes: a main break, a resistance break, an operating mechanism composed of a main break operating mechanism and a resistance break operating mechanism, a main break transmission system and a resistance break transmission system, wherein: the main break The transmission system drives the main fracture to open and close by receiving the operating work generated by the main fracture operating mechanism; the resistance fracture transmission system drives the main fracture by receiving the operating power generated by the resistance fracture operating mechanism The resistance fracture is opened and closed; the main fracture transmission system includes: a first input terminal, a first crank arm and a first connecting rod, and the first crank arm of the main fracture transmission system passes through the first input The terminal receives the operation work generated by the main break operating mechanism, and then drives the main break opening and closing operation of the circuit breaker by driving the movement of the first connecting rod;

The resistance fracture transmission system includes: a second input terminal, a second crank arm and a second connecting rod, and the second crank arm of the resistance fracture transmission system receives the input from the resistance fracture operating mechanism The generated operating work drives the opening and closing operation of the breaker resistance fracture by driving the movement of the second connecting rod.

Preferably, in the above circuit breaker, the operating mechanism further includes a synchronous closing mechanism composed of a resistance break rotation shaft and a main break rotation shaft, wherein the main break rotation shaft is aligned with the resistance break in the first rotation direction. The rotation axis is in close contact with the resistance rotation axis in the second rotation direction for a certain space;

The main fracture rotating shaft transmits the operation work from the main fracture operating mechanism to the main fracture transmission system; the resistance fracture rotating shaft transmits the operation work issued by the resistance fracture operating mechanism to the resistance Fracture transmission system.

Preferably, in the above circuit breaker, the operating mechanism further includes a delay opening control loop for controlling the opening time difference of the delay resistance break.

Preferably, in the above circuit breaker, the delay opening control circuit is a delay opening hydraulic circuit, and the delay opening hydraulic circuit includes a one-way valve and a throttle valve, wherein the opening and closing control circuit passing through the one-way valve After the passage or disconnection of the delayed opening hydraulic circuit, the liquid flow obtained by the resistance fracture operating mechanism is controlled by adjusting the opening amount of the throttle valve, and then the size of the generated operating work is controlled. According to the size of the operating work, the The speed of the resistance break transmission system is used to control the opening time of the resistance break.

A system having the high voltage circuit breaker, the system includes a circuit breaker and a user control circuit, wherein:

The circuit breaker includes a main break, a resistance break, an operating mechanism composed of the main break operating mechanism and the resistance break operating mechanism, a main break transmission system and a resistance break transmission system;

The main fracture transmission system drives the main fracture to perform opening and closing operations by receiving the operating power generated by the main fracture operating mechanism according to the control command sent by the user control loop;

The resistance break transmission system drives the resistance break to open and close by receiving the operating work generated by the resistance break operating mechanism according to the control command sent by the user control loop

The main fracture transmission system includes: a first input terminal, a first crank arm and a first connecting rod, wherein:

The first crank arm of the main breakout transmission system receives the operating work generated by the main breakout operating mechanism through the first input terminal, and then drives the breaker main breakout by driving the first connecting rod to move. Opening and closing operation;

The resistance fracture transmission system includes: a second input terminal, a second crank arm and a second connecting rod, wherein:

The second crank arm of the resistance break transmission system receives the operating work generated by the resistance break operating mechanism through the second input terminal, and then drives the resistance break of the circuit breaker by driving the movement of the second connecting rod. Opening and closing operation.

Preferably, in the above system, the operating mechanism of the resistance break is a hydraulic system operating mechanism, including a hydraulic control valve, a working cylinder of the resistance break and a piston of the working cylinder of the resistance break, wherein the hydraulic control valve includes an opening electromagnet and a closing Electromagnet, the resistance fracture working cylinder receives the control instruction sent by the user control circuit through the opening and closing electromagnet of the hydraulic control valve, opens the valve port of the hydraulic control valve to connect the hydraulic circuit, and drives the The piston of the resistance fracture working cylinder produces operating work.

Preferably, in the above system, the main break operating mechanism is a hydraulic system operating mechanism, including a hydraulic control valve, a main break working cylinder and a main break working cylinder piston, wherein the hydraulic control valve includes an opening electromagnet and a closing Electromagnet, after the main fracture working cylinder receives the control command sent by the user control circuit through the opening and closing electromagnet of the hydraulic control valve, it opens the valve port of the hydraulic control valve and then connects the hydraulic circuit to drive the The piston of the main fracture cylinder produces operating work.

Preferably, in the above system, the operating mechanism of the circuit breaker further includes a synchronous closing mechanism composed of a resistance break rotation shaft and a main break rotation shaft, wherein the main break rotation shaft is in the first rotation direction with the The rotating shaft of the resistance fracture is in close contact with the rotating shaft of the resistance in the second rotating direction;

The main fracture rotating shaft transmits the operation work from the main fracture operating mechanism to the main fracture transmission system; the resistance fracture rotating shaft transmits the operation work issued by the resistance fracture operating mechanism to the resistance Fracture transmission system.

Preferably, in the above system, the circuit breaker further includes a delay opening hydraulic circuit, and the delay opening hydraulic circuit includes a one-way valve and a throttle valve, wherein the opening and closing of the one-way valve controls the delay opening. After the passage or disconnection of the gate hydraulic circuit, the liquid flow obtained by the resistance fracture working cylinder is controlled by adjusting the opening amount of the throttle valve, and then the magnitude of the generated operation work is controlled, and the resistance fracture transmission system is controlled according to the magnitude of the operation work The speed to control the opening time of the resistance break.

Preferably, in the above system, the user control loop further includes a detection device, and after the detection device detects that the delay opening time difference of the resistance break exceeds a predetermined time difference, the control loop generates an opening signal and sends it to The opening electromagnet of the hydraulic system of the resistance break, the opening electromagnet forces the opening operation of the resistance break after receiving the opening signal.

It can be seen from the technical solution that the operating mechanism of the circuit breaker provided by the embodiment of the present invention is divided into a main break operating mechanism and a resistance break operating mechanism, and the main break operating mechanism is driven by driving the main break transmission system. The main breaker of the circuit breaker performs opening and closing operations; the resistance break operating mechanism drives the resistance breakage of the circuit breaker to perform opening and closing operations by driving the resistance break transmission system. This avoids the problem that the machining difficulty of the workpiece of the operating mechanism is increased because the operating work is too large when only one operating mechanism is used.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 (a) is the schematic diagram of drive system driving resistance fracture and main fracture closing in the prior art;

Fig. 1 (b) is the schematic diagram of drive system drive resistance fracture and main fracture opening in the prior art;

Fig. 2 (a) is the schematic diagram of drive system drive resistance fracture and main fracture closing of the present invention;

Fig. 2 (b) is the schematic diagram of driving resistance fracture and main fracture opening of the transmission system of the present invention;

Fig. 3 is the schematic diagram of resistance fracture and main fracture action sequence of the present invention;

Fig. 4 is the schematic diagram of synchronous closing mechanism of the present invention;

Fig. 5 is a schematic diagram of the delayed opening circuit of the present invention.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

The invention provides a high-voltage circuit breaker, which includes a main breakout operating mechanism, a resistance breakout operating mechanism, a main breakout transmission system, a resistance breakout transmission system, a main breakout 31 and a resistance breakout 32 . The operating mechanism of the resistance fracture drives the resistance fracture 32 of the circuit breaker by driving the transmission system of the resistance fracture to perform opening and closing operations; the operating mechanism of the main fracture drives the main fracture 31 of the circuit breaker by driving the transmission system of the main fracture Perform opening and closing operations.

The operating mechanism of the resistance fracture and the operating mechanism of the main fracture can be a hydraulic system operating mechanism, and the operating mechanism of the hydraulic system of the resistance fracture controls the opening and closing operation of the resistance fracture 32 by driving the transmission system of the resistance fracture . The operating mechanism of the main break hydraulic system controls the opening and closing operations of the main break 31 by driving the main break transmission system. The main fracture transmission system includes the input terminal A, the crank arm BOD and the connecting rod CF, wherein the O point of the crank arm BOD is a fixed fulcrum, the connecting rod CF is connected to the BD rod of the crank arm BOD through point C, and CF passes through the point C can be rotated. The resistance fracture transmission system includes the input terminal A1, the crank arm B1O1D1 and the connecting rod C1F1, wherein the O1 point of the crank arm B1O1D1 is a fixed fulcrum, the connecting rod C1F1 is connected to the B1D1 rod of the crank arm B1O1D1 through the C1 point, and C1F1 passes through the point C1 can be rotated. Below in conjunction with Fig. 2 (a)-2 (b), the working process of the embodiment of the present invention is described:

The operating mechanism of the main fracture hydraulic system sends out operation work, which is input to the main fracture transmission system through the input terminal A;

The operating work input to the main fracture transmission system acts on the crank arm BOD, causing the BOD to rotate around the point O and drive the connecting rod CF;

The CF movement further drives the main fracture 31 to complete the opening and closing operations;

The operating mechanism of the resistance fracture hydraulic system sends out operation work, and the operation work is input to the resistance fracture transmission system through the input terminal A1;

The operating work input to the resistance fracture transmission system acts on the crank arm B1O1D1, making B1O1D1 rotate around the O1 point and drive the connecting rod C1F1;

C1F1 moves and then drives the resistance break 32 to complete the opening and closing operations.

It should be noted that the circuit breaker can be a double-break circuit breaker, and the circuit breaker has two resistance breaks 32 and two main breaks 31. The resistance breaks and main breaks in the breaker will be described below in conjunction with FIG. 3 The opening and closing operation process:

(a)-(b)-(c) is the opening operation process. Since the voltage of the main fracture 31 is the voltage at both ends of the resistance fracture 32, its value is smaller than the rated voltage, which reduces the disconnection of the main fracture 31 to a certain extent. Therefore, the main fracture 31 is opened first, and the resistance fracture 32 is opened again, so as to completely extinguish the arc;

(c)-(d)-(a) is the closing operation process, the resistance fracture 32 is closed in advance, so that the pressure difference at both ends of the main fracture 31 is equal to that of the resistance fracture 32, and both are less than the rated voltage, and then the main fracture 31 is performed again. Switch on, so that the resistance break 32 suppresses the operating overvoltage of the main break 31 when closing.

As above-mentioned opening and closing operations, the main break 31 and the resistance break 32 are closed synchronously under the premise that a certain error is met, then the circuit breaker further includes a synchronous closing mechanism for controlling the main break 31 and the resistance break 32 synchronous closing, the mechanism includes a main fracture rotation shaft 41 and a resistance fracture rotation shaft 42, the main fracture rotation shaft 41 is in close contact with the resistance fracture rotation shaft 42 in the first rotation direction, and is in close contact with the resistance fracture rotation shaft in the second rotation direction 42 has a section of empty travel, as shown in Figure 4, is the working process of this synchronous closing mechanism, specifically:

When the main fracture rotating shaft 41 is in the closing state (a), clamp the resistance fracture rotating shaft 42, and when the main fracture rotating shaft 41 is in the opening state (c), there is a gap between the resistance fracture rotating shaft 42;

When the main fracture rotating shaft 41 is in the opening state (c), it rotates along the direction (1), drives the main fracture transmission system 21 and the resistance fracture transmission system 22 to move together, and completes the synchronous closing process (d);

The main fracture rotating shaft 41 rotates along the direction (2) during the closing process (a), and after driving the main fracture transmission system 21 for a period of idling operation, the resistance fracture rotation shaft 42 drives the resistance fracture transmission system 22 to run to complete the splitting process. Gate process (b).

Due to the opening operation as described above, the main break 31 performs the opening operation first, and the resistance break 32 performs the opening again. In order to ensure the delay time difference, the circuit breaker further includes a delay opening control loop. Since the resistance in the embodiment of the present invention The fracture operating mechanism is a hydraulic system operating mechanism. For the convenience of controlling it, the delayed opening control circuit in the embodiment of the present invention is a delayed opening hydraulic circuit. Its specific structure is shown in Figure 5. The delayed opening hydraulic circuit Including one-way valve 5 and throttle valve 6, when the liquid flows from the bottom to the top, it is divided into two channels: one-way valve channel 1 and throttle valve channel 2, of which one-way valve channel 1 is the main channel, most of the liquid All flow through this channel, and the throttle valve channel 2 has the function of control and adjustment, the flow of liquid flowing through this channel is very small, and its working process is:

The one-way valve 5 is opened, the one-way valve channel 1 is connected, and the liquid flows into the delay opening hydraulic circuit through this channel; the throttle valve 6 is opened, and the liquid flows into the delay opening hydraulic circuit through the throttle valve channel 2, and the adjustment The opening amount of the throttle valve 6 adjusts the flow rate of the upper and lower parts of the one-way valve 5 to adjust the opening amount of the valve port of the one-way valve 5, and then the liquid flow control obtained by controlling the resistance break operating mechanism is generated. According to the size of the operation work, the speed of the transmission system of the resistance break is controlled according to the size of the work work to control the opening time of the resistance break.

The present invention also provides a system with the high-voltage circuit breaker, which includes a circuit breaker and a user control circuit, wherein: the circuit breaker includes a main breakout 31, a resistance breakout 32, and is operated by a main breakout operating mechanism and a resistance breakout. An operating mechanism composed of an operating mechanism, a main fracture transmission system and a resistance fracture transmission system; the main fracture transmission system drives the The main fracture is opened and closed; the resistance fracture transmission system drives the resistance fracture to open and close by receiving the operating power generated by the resistance fracture operating mechanism according to the control command sent by the user control circuit operate.

The resistance break operating mechanism of the system circuit breaker may be a hydraulic system operating mechanism, including a hydraulic control valve, a resistance break working cylinder and a resistance break working cylinder piston, wherein the hydraulic control valve includes an opening electromagnet and a closing electromagnet, Its opening process is:

The user control circuit sends an opening command to the opening electromagnet;

After the opening electromagnet receives the opening signal, the coil of the opening electromagnet is electrified and generates electromagnetic induction;

The moving iron core of the electromagnet moves under the action of electromagnetic force to push the spool of the hydraulic control valve to move, so that the valve port of the control valve is opened, the hydraulic circuit is connected, and the liquid flows into the working cylinder of the resistance fracture;

Under the action of the high-pressure liquid, the piston of the resistance break working cylinder moves to generate operating work, and then drives the resistance break through the drive system of the resistance break to perform the opening operation.

Its closing process is:

The user control circuit sends a closing command to the closing electromagnet;

After the closing electromagnet receives the closing signal, the coil of the closing electromagnet is electrified and generates electromagnetic induction;

The moving iron core of the electromagnet moves under the action of electromagnetic force to push the spool of the hydraulic control valve to move, so that the valve port of the control valve is opened, the hydraulic circuit is connected, and the liquid flows into the working cylinder of the resistance fracture;

Under the action of the high-pressure liquid, the piston of the resistance break working cylinder moves to generate operating work, and then drives the resistance break through the drive system of the resistance break to perform closing operation.

Similarly, the main breakout operating mechanism of the system circuit breaker can also be a hydraulic system operating mechanism, including a hydraulic control valve, a resistance break working cylinder and a resistance break working cylinder piston, wherein the hydraulic control valve includes an opening electromagnet and a closing valve. The gate electromagnet, its opening process is:

The user control circuit sends an opening command to the opening electromagnet;

After the opening electromagnet receives the opening signal, the coil of the opening electromagnet is electrified and generates electromagnetic induction;

The moving iron core of the electromagnet moves under the action of electromagnetic force to push the spool of the hydraulic control valve to move, so that the valve port of the control valve is opened, the hydraulic circuit is connected, and the liquid flows into the main fracture working cylinder;

Under the action of the high-pressure liquid, the piston of the main breakout working cylinder moves to generate operating work, and then drives the main breakout to perform the opening operation by driving the main breakout transmission system.

Its closing process is:

The user control circuit sends a closing command to the closing electromagnet;

After the closing electromagnet receives the closing signal, the coil of the closing electromagnet is electrified and generates electromagnetic induction;

The moving iron core of the electromagnet moves under the action of electromagnetic force to push the spool of the hydraulic control valve to move, so that the valve port of the control valve is opened, the hydraulic circuit is connected, and the liquid flows into the main fracture working cylinder;

Under the action of the high-pressure liquid, the piston of the main fracture working cylinder moves to generate operating work, and then drives the main fracture to perform the closing operation by driving the transmission system of the main fracture.

The circuit breaker in the system of the present invention further includes a synchronous closing mechanism for controlling the synchronous closing of the main break 31 and the resistance break 32. The mechanism includes a main break rotation shaft 41 and a resistance break rotation shaft 42. The main break rotation shaft 41 is In the first rotation direction, it is in close contact with the resistance fracture rotation shaft 42 , and in the second rotation direction, it has a gap with the resistance rotation shaft 42 , and the specific working process is as described above.

Also due to the above-mentioned opening operation, the main break 31 performs the opening operation first, and the resistance break 32 performs the opening again. In order to ensure the delay time difference, the circuit breaker in this system further includes a delayed opening hydraulic circuit, and its working process is as described above. mentioned.

In order to realize the double insurance of the delayed opening of the resistance break of the circuit breaker, the user control circuit also includes a detection device, which is connected to the resistance break. If the detection device detects that the resistance break is not opened within the normal delay time, the The user control circuit sends an opening signal to the opening electromagnet of the hydraulic operating mechanism of the resistance fracture, and the opening electromagnet receives the opening signal and drives the piston of the resistance fracture working cylinder through the hydraulic circuit to generate operating work. Furthermore, the opening of the resistance break is completed by driving the drive system of the resistance break, wherein the normal delay time can be a certain time (eg 10 ms) slower than the predetermined time difference made according to the error (eg 2.5 ms).

Each embodiment in this specification is described in a progressive manner, each embodiment focuses on the difference from other embodiments, and the same and similar parts of each embodiment can be referred to each other. The above description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention will not be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (9)

1. A circuit breaker, comprising a main break, a resistance break, an operating mechanism, a resistance break transmission system and a main break transmission system, wherein the operating mechanism comprises a main break operation connected to the main break transmission system Actuating mechanism, and the resistance fracture operating mechanism connected with the resistance fracture transmission system, wherein: The main fracture transmission system drives the main fracture to perform opening and closing operations by receiving the operating work generated by the main fracture operating mechanism; The resistance fracture transmission system drives the resistance fracture to perform opening and closing operations by receiving the operation work generated by the resistance fracture operating mechanism; The main fracture transmission system includes: a first input terminal, a first crank arm and a first connecting rod, wherein: The first crank arm of the main breakout transmission system receives the operating work generated by the main breakout operating mechanism through the first input terminal, and then drives the breaker main breakout by driving the first connecting rod to move. Opening and closing operation; The resistance fracture transmission system includes: a second input terminal, a second crank arm and a second connecting rod, wherein: The second crank arm of the resistance break transmission system receives the operating work generated by the resistance break operating mechanism through the second input terminal, and then drives the resistance break of the circuit breaker by driving the movement of the second connecting rod. Opening and closing operation. 2. The circuit breaker according to claim 1, wherein the operating mechanism further comprises a synchronous closing mechanism composed of a resistance fracture rotation shaft and a main fracture rotation shaft, wherein: The rotation axis of the main fracture is in close contact with the rotation axis of the resistance fracture in the first rotation direction, and has a gap with the rotation axis of the resistance in the second rotation direction; The main fracture rotating shaft transmits the operating work generated by the main fracture operating mechanism to the main fracture transmission system; The resistance fracture rotating shaft transmits the operation work generated by the resistance fracture operating mechanism to the resistance fracture transmission system. 3. The circuit breaker according to claim 1, wherein the operating mechanism further comprises a delay opening control circuit. 4. The circuit breaker according to claim 3, wherein the delayed opening control circuit is a delayed opening hydraulic circuit, and the delayed opening hydraulic circuit includes a check valve and a throttle valve, wherein: After controlling the passage or disconnection of the delayed opening hydraulic circuit by opening and closing the one-way valve, the liquid flow obtained by the resistance opening operating mechanism is controlled by adjusting the opening amount of the throttle valve, and then the generated operating work is controlled. According to the magnitude of the operating work, the opening time of the resistance break is controlled by controlling the speed of the drive system of the resistance break. 5. A system with a circuit breaker, characterized in that the system comprises a circuit breaker and a user control circuit, wherein: The circuit breaker includes a main break, a resistance break, an operating mechanism composed of the main break operating mechanism and the resistance break operating mechanism, a main break transmission system and a resistance break transmission system; The main fracture transmission system drives the main fracture to perform opening and closing operations by receiving the operating power generated by the main fracture operating mechanism according to the control command sent by the user control loop; The resistance fracture transmission system drives the resistance fracture to perform opening and closing operations by receiving the operating power generated by the resistance fracture operating mechanism according to the control command sent by the user control loop; The main fracture transmission system includes: a first input terminal, a first crank arm and a first connecting rod, wherein: The first crank arm of the main breakout transmission system receives the operating work generated by the main breakout operating mechanism through the first input terminal, and then drives the breaker main breakout by driving the first connecting rod to move. Opening and closing operation; The resistance fracture transmission system includes: a second input terminal, a second crank arm and a second connecting rod, wherein: The second crank arm of the resistance break transmission system receives the operating work generated by the resistance break operating mechanism through the second input terminal, and then drives the resistance break of the circuit breaker by driving the movement of the second connecting rod. Opening and closing operation. 6. The system according to claim 5, wherein the main fracture operating mechanism is a hydraulic system operating mechanism, including a hydraulic control valve, a main fracture working cylinder and a main fracture working cylinder piston, wherein: The hydraulic control valve includes an opening electromagnet and a closing electromagnet; After receiving the control command sent by the user control circuit through the opening and closing electromagnet of the hydraulic control valve, the main fracture working cylinder opens the valve port of the hydraulic control valve to connect the hydraulic circuit to drive the main fracture to work. Cylinder piston generates operating work; The resistance fracture operating mechanism is a hydraulic system operating mechanism, including a hydraulic control valve, a resistance fracture working cylinder and a resistance fracture working cylinder piston, wherein: The hydraulic control valve includes an opening electromagnet and a closing electromagnet; After receiving the control instruction sent by the user control circuit through the opening and closing electromagnets of the hydraulic control valve, the resistance fracture working cylinder opens the valve port of the hydraulic control valve to connect the hydraulic circuit to drive the resistance fracture to work. The cylinder piston produces operating work. 7. The system according to claim 5, wherein the operating mechanism of the circuit breaker further includes a synchronous closing mechanism composed of a resistance fracture rotation axis and a main fracture rotation axis, wherein: The rotation axis of the main fracture is in close contact with the rotation axis of the resistance fracture in the first rotation direction, and has a gap with the rotation axis of the resistance in the second rotation direction; The main fracture rotating shaft transmits the operating work generated by the main fracture operating mechanism to the main fracture transmission system; The resistance fracture rotating shaft transmits the operation work generated by the resistance fracture operating mechanism to the resistance fracture transmission system. 8. The system according to claim 6, wherein the operating mechanism of the circuit breaker further includes a delayed opening hydraulic circuit, and the delayed opening hydraulic circuit includes a check valve and a throttle valve, wherein: After controlling the passage or disconnection of the delayed opening hydraulic circuit by opening and closing the one-way valve, the liquid flow obtained by the resistance opening working cylinder is controlled by adjusting the opening amount of the throttle valve, and then the generated operating work is controlled. According to the size of the operating work, the opening time of the resistance break is controlled by controlling the speed of the drive system of the resistance break. 9. The system according to claim 6, wherein the user control loop further comprises a detection device, wherein: After the detection device detects that the delayed opening time difference of the resistance break exceeds a predetermined time difference, the user control circuit generates a break signal and sends it to the break electromagnet of the hydraulic system operating mechanism of the resistance break, the After receiving the opening signal, the opening electromagnet forces the resistance breakout to perform an opening operation. the

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