Circuit breaker control system and control method

Abstract

The application discloses a kind of circuit breaker control system and control method, the system includes L type frame, propulsion mechanism, power module, display control screen, measurement and control terminal, host computer, handcart drive circuit and operating mechanism drive circuit, handcart drive circuit includes drive module MCU, drive motor M2, auxiliary switch FK, mode conversion switch SA, first position confirmation mechanism, second position confirmation mechanism and travel switch TQ1;Operating mechanism drive circuit includes drive module DL, operating mechanism energy storage module, relay KT1, auxiliary switch FK, mode conversion switch SA, closing coil LH and opening coil LF.The application realizes remote operation to circuit breaker handcart and propulsion mechanism, operating mechanism by measurement and control terminal and two drive circuits, greatly improves the operating efficiency of circuit breaker in and out car, reduces operating strength and operation and maintenance cost.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of circuit breakers, and particularly relates to a circuit breaker control system and a control method. BACKGROUND

[0002] At present, in a traditional 27.5kV indoor railway circuit breaker scheme, a current transformer is installed on a circuit breaker trolley, and is designed to be integrated with a circuit breaker operating mechanism and a propulsion mechanism, so as to realize circuit breaker opening and closing operations, manual propulsion or withdrawal operations of the propulsion mechanism, and primary main loop current measurement, and to achieve the functions of receiving or distributing electric energy and fault protection.

[0003] At present, the operation means of the propulsion mechanism of the indoor 27.5kV railway circuit breaker is mainly mechanical operation, which increases the operation strength and operation and maintenance costs. Taking the propulsion mechanism as an example, a commonly used technical solution is a mechanical propulsion system, which is composed of a trolley frame, a manual operating mechanism, an interlocking mechanism (a foot pedal or a lever), a position indicating assembly and the like. If the circuit breaker trolley is operated to be propelled from a test position to a working position: first, an operator confirms that the circuit breaker is in an "opening" state, the manual operating mechanism is locked at a "split" position, the interlocking mechanism is unlocked by a foot pedal (or the interlocking mechanism is unlocked by a lever), the trolley frame handle is manually pushed, the trolley frame is moved to the working position, and when the trolley frame is blocked (i.e., the lock hook of the manual operating mechanism reaches the locking preparation position), the handle of the manual operating mechanism is moved to the "closing" position according to the corresponding indication direction, the interlocking pedal or lever is reset and locked, and the circuit breaker trolley enters the working position. If the circuit breaker trolley is operated to be withdrawn from the working position to the test position: first, an operator confirms that the circuit breaker is in an "opening" state, and then reverses the above steps.

[0004] The patent document with the authorized announcement number CN205248686U discloses a circuit breaker in-out trolley system, which drives a lead screw to rotate through a motor, and then drives a chassis trolley to move through a lead screw nut, so that the chassis trolley moves along a track; when the circuit breaker trolley moves to the static contact to insert the dynamic contact, the circuit breaker trolley enters the working position; the motor is reversely controlled to make the circuit breaker trolley exit.

[0005] The current transformer is installed on the circuit breaker trolley, significantly increasing its overall weight. When operating the trolley to advance or withdraw, maintenance personnel cannot implement electric control or remote control, and can only rely on manual on-site operation. This results in high operational intensity, low work efficiency, high error rate, and low safety, which limits the development of intelligent circuit breaker products in electrified railways. Relying solely on manual inspections and on-site manual operation, which relies too much on human work experience and operating skills, increases the risk of human factors, is labor-intensive, and has low work efficiency, which invisibly increases the labor and time costs of operation and maintenance work. During on-site operation, any failure or misoperation will have a serious impact on the safety of operators and equipment, making remote electric control impossible and failing to meet the needs of the intelligent development of electrified railways. Summary of the Invention

[0006] The purpose of the present invention is to provide a circuit breaker control system and control method to solve the problem that traditional mechanical operation schemes rely too much on human work experience and operating strength, resulting in high intensity of circuit breaker entry and exit and opening and closing operations, low work efficiency, high operation and maintenance costs, and inability to achieve remote electric control.

[0007] The present invention solves the above-mentioned technical problems through the following technical solutions: a circuit breaker control system comprising an L-shaped frame provided with a first track and a static contact, a propulsion mechanism provided with a second track, a display and control screen, a measurement and control terminal, a host computer, a trolley drive circuit, and an operating mechanism drive circuit; the propulsion mechanism is slidably provided on the first track; the display and control screen is provided on an operating panel of the circuit breaker trolley;

[0008] The display and control screen is used to display the position status of the circuit breaker trolley and the propulsion mechanism, as well as the opening and closing status of the circuit breaker operating mechanism;

[0009] The host computer is used to display the position status of the circuit breaker trolley and the propulsion mechanism and the opening and closing status of the circuit breaker operating mechanism; generate a propulsion or exit demand instruction in the remote operation mode and send it to the measurement and control terminal; generate an opening and closing demand instruction in the remote operation mode and send it to the measurement and control terminal;

[0010] The measurement and control terminal is used to: when the circuit breaker trolley and the propulsion mechanism are in the test position and the operating mechanism is in the open state, issue a first propulsion control instruction to the trolley drive circuit according to the propulsion demand instruction issued by the host computer; when the circuit breaker trolley and the propulsion mechanism are in the working position and the circuit breaker operating mechanism is in the open state, issue a first exit control instruction to the trolley drive circuit according to the exit demand instruction issued by the host computer; when the circuit breaker trolley and the propulsion mechanism reach the working position or the test position, issue a stop propulsion or exit instruction to the trolley drive circuit;

[0011] The measurement and control terminal is further configured to: issue a first closing control instruction to the operating mechanism drive circuit according to a closing demand instruction issued by an upper computer when the circuit breaker trolley and the propulsion mechanism are in the test position or the working position and the operating mechanism is in an open state; and issue a first opening control instruction to the operating mechanism drive circuit according to an opening demand instruction issued by the upper computer when the circuit breaker trolley and the propulsion mechanism are in the test position or the working position and the operating mechanism is in a closed state.

[0012] The trolley drive circuit is configured to: control the circuit breaker trolley and the propulsion mechanism to move from the test position to the working position according to the first propulsion control instruction and a remote operation mode signal; control the circuit breaker trolley and the propulsion mechanism to move from the working position to the test position according to the first exit control instruction and the remote operation mode signal; and control the circuit breaker trolley and the propulsion mechanism to stop according to a stop propulsion or exit instruction.

[0013] The operating mechanism drive circuit is configured to: drive the operating mechanism transmission device to perform a closing action according to the first closing control instruction and the remote operation mode signal; and drive the operating mechanism transmission device to perform an opening action according to the first opening control instruction and the remote operation mode signal.

[0014] Further, the trolley drive circuit comprises a drive module MCU, a drive motor M2, seventh and eighth contacts of an auxiliary switch FK, a contact SA-1 of a mode conversion switch SA, a first position confirmation mechanism, a second position confirmation mechanism, and a travel switch TQ1; a third end of the drive module MCU is connected to a fourth end of the drive module MCU through a contact TQ1-4 of the travel switch TQ1 and the drive motor M2; a seventh end of the drive module MCU is connected to an eighth end of the drive module MCU through the contact SA-1; the seventh and eighth contacts of the auxiliary switch FK are connected to the measurement and control terminal; the drive motor M2 is arranged on an L-shaped frame and connected to the propulsion mechanism through a motion mechanism; and the travel switch TQ1 is arranged on an upper part of a bottom plate of the circuit breaker trolley and connected to a pedal of the circuit breaker trolley.

[0015] The first position confirmation mechanism is configured to confirm whether the circuit breaker trolley and the propulsion mechanism are in the working position; the second position confirmation mechanism is configured to confirm whether the circuit breaker trolley and the propulsion mechanism are in the test position; and the mode conversion switch SA is configured to generate a remote operation mode signal or an on-site operation mode signal.

[0016] The measurement and control terminal is further configured to: determine, according to feedback signals of the first position confirmation mechanism and the second position confirmation mechanism, whether the circuit breaker handcart and the pushing mechanism are in a test position or a working position, and feed back to the display control screen and the upper computer; and determine, according to states of the seventh contact and the eighth contact of the auxiliary switch FK, whether the operating mechanism is in an open state or a closed state, and feed back to the display control screen and the upper computer.

[0017] The driving module MCU is configured to: control the driving motor M2 to work according to a first pushing control instruction and a remote operation mode signal, so that the circuit breaker handcart and the pushing mechanism move from the test position to the working position; control the driving motor M2 to work according to a first exit control instruction and the remote operation mode signal, so that the circuit breaker handcart and the pushing mechanism move from the working position to the test position; and control the driving motor M2 to stop according to a stop pushing or exit instruction.

[0018] Further, the first position confirmation mechanism comprises a travel switch SQ2, a travel switch S11, a first baffle and a second baffle; the travel switch SQ2 is arranged at the bottom of the circuit breaker handcart, the first baffle is arranged at the bottom surface of the L-shaped frame, and when the first baffle contacts the travel switch SQ2, the circuit breaker handcart is in the working position; the travel switch S11 is arranged on the first track, the second baffle is arranged on the pushing mechanism, and when the second baffle contacts the travel switch S11, the pushing mechanism is in the working position; a third end of the measurement and control terminal is connected to a fourth end of the measurement and control terminal through a contact S11-2 of the travel switch S11 and a contact SQ2-2 of the travel switch SQ2;

[0019] The second position confirmation mechanism comprises a travel switch SQ3, a travel switch S12, a third baffle and a fourth baffle; the travel switch SQ3 is arranged at the bottom of the circuit breaker handcart, the third baffle is arranged at the bottom surface of the L-shaped frame, and when the third baffle contacts the travel switch SQ3, the circuit breaker handcart is in the test position; the travel switch S12 is arranged on the first track, the fourth baffle is arranged on the pushing mechanism, and when the fourth baffle contacts the travel switch S12, the pushing mechanism is in the test position; a fifth end of the measurement and control terminal is connected to a sixth end of the measurement and control terminal through a contact S12-2 of the travel switch S12 and a contact SQ3-2 of the travel switch SQ3.

[0020] Further, a contact SQ2-1 of the travel switch SQ2 and a contact S11-1 of the travel switch S11 are connected in series and then connected to a connector T; a contact SQ3-1 of the travel switch SQ3 and a contact S12-1 of the travel switch S12 are connected in series and then connected to the connector T; the driving module MCU is further connected to the connector T.

[0021] The fifth contact of the auxiliary switch FK is connected with the contact T3 and T13 of the connector T respectively; the sixth contact of the auxiliary switch FK is connected with the contact T5 and T15 of the connector T respectively; the contact SQ2-3 of the travel switch SQ2 and the contact S11-3 of the travel switch S11 are connected in series to form a first series branch, the contact SQ3-3 of the travel switch SQ3 and the contact S12-3 of the travel switch S12 are connected in series to form a second series branch, the first series branch and the second series branch are connected in parallel to form a parallel branch, and the parallel branch is connected in the branch between the driving module DL and the first contact of the relay KT1.

[0022] Further, the handcart driving circuit further comprises a travel switch SQ1, a fifth baffle, an operation hole and a first handle, the operation hole is arranged on the operation panel of the circuit breaker handcart; the contact SQ1-1 of the travel switch SQ1 is connected in parallel to the both ends of the contact TQ1-1, the contact SQ1-2 of the travel switch SQ1 is connected in the branch corresponding to the contact TQ1-2, and the contact SQ1-4 of the travel switch SQ1 is connected in the branch corresponding to the contact TQ1-4 and the driving motor M2;

[0023] The fifth baffle is arranged on the upper part of the bottom plate of the circuit breaker handcart, and the fifth baffle is actuated when the first handle is inserted into the operation hole, the travel switch SQ1 is touched by the fifth baffle, the contact SQ1-1 is closed, and the contact SQ1-2 and the contact SQ1-4 are disconnected; the first handle is connected with the movement mechanism through the operation hole, the movement mechanism is driven to act by operating the first handle, so that the advancing mechanism is driven to act, and the manual operation of advancing or withdrawing the circuit breaker handcart is realized.

[0024] Further, the operating mechanism driving circuit comprises a driving module DL, an operating mechanism energy storage module, a relay KT1, first to third contact points of an auxiliary switch FK, contact points SA-2 to SA-5 of a mode conversion switch SA, a closing coil LH and an opening coil LF; a thirteenth end of the driving module DL is connected with a fourteenth end of the driving module DL through the operating mechanism energy storage module; the closing coil LH and the opening coil LF are connected with the driving module DL respectively; one end of a first contact point of the auxiliary switch FK is connected with a contact point T4 of a connector T through a contact point SA-4, and the other end of the first contact point of the auxiliary switch FK is connected with the driving module DL through a contact point TQ1-2 of a travel switch TQ1; one end of a second contact point of the auxiliary switch FK is connected with one end of the first contact point of the auxiliary switch FK through a coil of the relay KT1, and the other end of the second contact point of the auxiliary switch FK is connected with the driving module DL through a first contact point of the relay KT1, and a second contact point of the relay KT1 is connected in parallel to the second contact point of the auxiliary switch FK; one end of a third contact point of the auxiliary switch FK is connected with a contact point T30 of the connector T through a contact point SA-5, and the other end of the third contact point of the auxiliary switch FK is connected with the driving module DL, and the other end of the third contact point of the auxiliary switch FK is also connected with the driving module DL through a contact point TQ1-1 of the travel switch TQ1; a contact point SA-3 of the mode conversion switch SA is connected in parallel to both ends of the contact point TQ1-1, and both ends of a contact point SA-2 of the mode conversion switch SA are connected with the first contact point of the auxiliary switch FK and the contact point SA-3 respectively.

[0025] The driving module DL is configured to: control the closing coil LH to be powered on according to the first closing control instruction and the remote operation mode signal, trigger the operating mechanism transmission device to perform a closing action, and disconnect the first contact point and the seventh contact point of the auxiliary switch FK and connect the second contact point, the third contact point and the eighth contact point of the auxiliary switch FK; control the opening coil LF to be powered on according to the first opening control instruction and the remote operation mode signal, trigger the operating mechanism transmission device to perform an opening action, and connect the first contact point and the seventh contact point of the auxiliary switch FK and disconnect the second contact point, the third contact point and the eighth contact point of the auxiliary switch FK.

[0026] Further, the display and control screen is further configured to: generate a pushing or exiting demand instruction in the on-site operation mode and send the instruction to the measurement and control terminal; and generate a closing or opening demand instruction in the on-site operation mode and send the instruction to the measurement and control terminal.

[0027] The measurement and control terminal is further configured to: under the condition that the circuit breaker handcart and the propulsion mechanism are in the test position and the circuit breaker operating mechanism is in the open state, issue a second propulsion control instruction to the handcart drive circuit according to a propulsion demand instruction issued by the display and control screen; and under the condition that the circuit breaker handcart and the propulsion mechanism are in the working position and the circuit breaker operating mechanism is in the open state, issue a second exit control instruction to the handcart drive circuit according to an exit demand instruction issued by the display and control screen.

[0028] The measurement and control terminal is further configured to: under the condition that the circuit breaker handcart and the propulsion mechanism are in the test position or the working position and the operating mechanism is in the open state, issue a second closing control instruction to the operating mechanism drive circuit according to a closing demand instruction issued by the display and control screen; and under the condition that the circuit breaker handcart and the propulsion mechanism are in the test position or the working position and the operating mechanism is in the closed state, issue a second opening control instruction to the operating mechanism drive circuit according to an opening demand instruction issued by the display and control screen.

[0029] The handcart drive circuit is further configured to: control the circuit breaker handcart and the propulsion mechanism to move from the test position to the working position according to the second propulsion control instruction and the local operation mode signal; and control the circuit breaker handcart and the propulsion mechanism to move from the working position to the test position according to the second exit control instruction and the local operation mode signal.

[0030] The operating mechanism drive circuit is further configured to: drive the operating mechanism transmission to perform a closing action according to the second closing control instruction and the local operation mode signal; and drive the operating mechanism transmission to perform an opening action according to the second opening control instruction and the local operation mode signal.

[0031] Further, the handcart drive circuit further comprises a knob SB2 connected with the handcart drive circuit.

[0032] The knob SB2 is configured to generate a third propulsion control instruction or a third exit control instruction, and the handcart drive circuit is configured to control the circuit breaker handcart and the propulsion mechanism to move from the test position to the working position according to the third propulsion control instruction and the local operation mode signal, and control the circuit breaker handcart and the propulsion mechanism to move from the working position to the test position according to the third exit control instruction and the local operation mode signal.

[0033] The operating mechanism drive circuit further comprises a knob SB1, first and second contact points of the knob SB1 are connected in series between a first contact point of an auxiliary switch FK and a contact point SA-2, third and fourth contact points of the knob SB1 are connected in series between a third contact point of the auxiliary switch FK and a contact point SA-3, and the knob SB1 is configured to generate a third opening control instruction or a third closing control instruction.

[0034] The operating mechanism drive circuit is further configured to drive the operating mechanism transmission device to perform a closing action according to a third closing control instruction and the on-site operation mode signal, and to perform an opening action according to a third opening control instruction and the on-site operation mode signal.

[0035] Further, the control system further comprises a first vision sensor, a second vision sensor, a current sensor LT, a current sensor L1, a current sensor L2, a current sensor L3 and a displacement sensor ZW connected with the measurement and control terminal; the first vision sensor is configured to monitor the motion state of the motion mechanism, the second vision sensor is configured to monitor the position state of the movable contact of the circuit breaker handle, the current sensor LT is configured to monitor the operating current of the drive motor M2, the current sensor L1 is configured to monitor the closing current of the operating mechanism, the current sensor L2 is configured to monitor the opening current of the operating mechanism, the current sensor L3 is configured to monitor the energy storage current of the operating mechanism, and the displacement sensor ZW is configured to monitor the stroke displacement parameter of the operating mechanism.

[0036] The display control screen and the upper computer are further configured to display in real time the motion state of the motion mechanism, the position state of the movable contact of the circuit breaker handle, the operating state of the drive motor M2, the opening and closing currents of the operating mechanism, and the stroke displacement parameter of the operating mechanism.

[0037] Further, the power supply module comprises a capacitor bank C, a diode D1, a diode D2, a resistor R and a relay KT2; a third series branch is formed by the diode D2, the resistor R and the contact KT2-1 of the relay KT2 in sequence, the diode D1 is connected in parallel to the two ends of the third series branch, the positive electrode of the diode D2 and the coil of the relay KT2 are connected with the contact T10 of the connector T respectively, the positive electrode of the capacitor bank C is connected with the contact KT2-1 of the relay KT2 and the resistor R, the negative electrode of the capacitor bank C is connected with the coil of the relay KT2, the contact T20 of the connector T, the handle drive circuit and the operating mechanism drive circuit, and the contact KT2-1 of the relay KT2 is connected with the handle drive circuit and the operating mechanism drive circuit.

[0038] Further, the operating mechanism drive circuit further comprises a voltage relay YJ, the contact YJ-1 of the voltage relay YJ is connected in series to the branch corresponding to the contact TQ1-2, the contact KT2-2 of the relay KT2 is connected in parallel to the two ends of the contact YJ-1 of the voltage relay YJ, the positive electrode of the capacitor bank C is further connected with the voltage measuring coil U0 of the voltage relay YJ, and the coil of the voltage relay YJ is further connected with the contact T10 of the connector T.

[0039] Based on the same concept, the application also provides a control method of the circuit breaker control system as described above, comprising remote operation control; wherein the remote operation control of the circuit breaker handcart comprises:

[0040] When the circuit breaker handcart and the propulsion mechanism are in the test position or the working position and the operating mechanism is in the open state, the mode switch SA is rotated to the remote gear, the operating mechanism drive circuit receives the remote operation mode signal, the control terminal sends the first closing control instruction to the operating mechanism drive circuit according to the closing demand instruction issued by the upper computer, and the operating mechanism drive circuit drives the operating mechanism transmission device to perform the closing action according to the first closing control instruction and the remote operation mode signal.

[0041] When the circuit breaker handcart and the propulsion mechanism are in the test position or the working position and the operating mechanism is in the open state, the mode switch SA is rotated to the remote gear, the operating mechanism drive circuit receives the remote operation mode signal, the control terminal sends the first closing control instruction to the operating mechanism drive circuit according to the closing demand instruction issued by the upper computer, and the operating mechanism drive circuit drives the operating mechanism transmission device to perform the closing action according to the first closing control instruction and the remote operation mode signal.

[0042] When the circuit breaker handcart and the propulsion mechanism are in the test position or the working position and the operating mechanism is in the open state, the mode switch SA is rotated to the remote gear, the operating mechanism drive circuit receives the remote operation mode signal, the control terminal sends the first closing control instruction to the operating mechanism drive circuit according to the closing demand instruction issued by the upper computer, and the operating mechanism drive circuit drives the operating mechanism transmission device to perform the closing action according to the first closing control instruction and the remote operation mode signal.

[0043] When the circuit breaker handcart and the propulsion mechanism are in the test position or the working position and the operating mechanism is in the open state, the mode switch SA is rotated to the remote gear, the operating mechanism drive circuit receives the remote operation mode signal, the control terminal sends the first closing control instruction to the operating mechanism drive circuit according to the closing demand instruction issued by the upper computer, and the operating mechanism drive circuit drives the operating mechanism transmission device to perform the closing action according to the first closing control instruction and the remote operation mode signal.

[0044] When the circuit breaker handcart and the propulsion mechanism are in the test position or the working position and the operating mechanism is in the open state, the mode switch SA is rotated to the remote gear, the operating mechanism drive circuit receives the remote operation mode signal, the control terminal sends the first closing control instruction to the operating mechanism drive circuit according to the closing demand instruction issued by the upper computer, and the operating mechanism drive circuit drives the operating mechanism transmission device to perform the closing action according to the first closing control instruction and the remote operation mode signal.

[0045] The remote operation control of the operating mechanism comprises:

[0046] When the circuit breaker handcart and the propulsion mechanism are in the test position or the working position and the operating mechanism is in the open state, the mode switch SA is rotated to the remote gear, the operating mechanism drive circuit receives the remote operation mode signal, the control terminal sends the first closing control instruction to the operating mechanism drive circuit according to the closing demand instruction issued by the upper computer, and the operating mechanism drive circuit drives the operating mechanism transmission device to perform the closing action according to the first closing control instruction and the remote operation mode signal.

[0047] The operating mechanism drive circuit drives the operating mechanism transmission device to perform the closing action according to the first closing control instruction and the remote operation mode signal, the seventh contact of the auxiliary switch FK is disconnected, the eighth contact of the auxiliary switch FK is connected, the control terminal determines that the operating mechanism is in the closed state according to the states of the seventh contact and the eighth contact of the auxiliary switch FK, and displays on the display and control screen and the upper computer.

[0048] Under the condition that the circuit breaker trolley and the advancing mechanism are in the test position or the working position and the operating mechanism is in the closing state, the mode switching switch SA is rotated to the remote gear, and the operating mechanism drive circuit receives the remote operation mode signal; the control terminal issues the first opening control instruction to the operating mechanism drive circuit according to the opening demand instruction issued by the upper computer;

[0049] The operating mechanism drive circuit drives the operating mechanism transmission device to execute the opening action according to the first opening control instruction and the remote operation mode signal, the seventh contact of the auxiliary switch FK is closed, and the eighth contact of the auxiliary switch FK is disconnected, and the control terminal determines that the operating mechanism is in the opening state according to the states of the seventh contact and the eighth contact of the auxiliary switch FK, and displays on the display and control screen and the upper computer.

[0050] Beneficial effects

[0051] Compared with the prior art, the circuit breaker control system has the advantages that:

[0052] The second position confirming mechanism is used to confirm that the circuit breaker trolley and the advancing mechanism are in the test position, and the first position confirming mechanism is used to confirm that the circuit breaker trolley and the advancing mechanism are in the working position; under the condition that the circuit breaker trolley and the advancing mechanism are in the working position or the test position and the circuit breaker operating mechanism is in the opening state, the remote exit or advancing operation of the circuit breaker trolley and the advancing mechanism is realized through the control terminal and the drive module MCU, so that the operation efficiency of the circuit breaker trolley and the advancing mechanism is greatly improved, and the operation strength and the operation and maintenance cost are reduced.

[0053] The circuit breaker control system has the advantages that: under the condition that the circuit breaker trolley and the advancing mechanism are in the test position or the working position and the operating mechanism is in the opening and closing state, the opening and closing remote operation of the circuit breaker operating mechanism is realized through the control terminal and the drive module DL, so that the opening and closing operation reliability of the circuit breaker operating mechanism is greatly improved, and the risk of misoperation is reduced.

[0054] The circuit breaker control system has the advantages that: under the condition that the circuit breaker trolley and the advancing mechanism are in the test position or the working position and the operating mechanism is in the opening and closing state, the opening and closing remote operation of the circuit breaker operating mechanism is realized through the control terminal and the drive module DL, so that the opening and closing operation reliability of the circuit breaker operating mechanism is greatly improved, and the risk of misoperation is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0055] In order to more clearly illustrate the technical solutions of the present application, the following will briefly introduce the drawings needed in the embodiment description. Obviously, the drawings in the following description are only one embodiment of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0056] Figure 1 It is a structural block diagram of the circuit breaker control system in the embodiment of the present application.

[0057] Figure 2 is the control principle diagram of the circuit breaker control system in the embodiment of the present application;

[0058] Figure 3 is the three-dimensional schematic diagram of the L-shaped frame and the propulsion mechanism in the embodiment of the present application;

[0059] Figure 4 is the top view of the L-shaped frame and the propulsion mechanism in the embodiment of the present application;

[0060] Figure 5 is the three-dimensional schematic diagram of the circuit breaker in the embodiment of the present application;

[0061] Figure 6 is the partial sectional view of the circuit breaker trolley in the embodiment of the present application;

[0062] Figure 7 is the schematic diagram of the test position of the circuit breaker trolley in the embodiment of the present application;

[0063] Figure 8 is the schematic diagram of the working position of the circuit breaker trolley in the embodiment of the present application;

[0064] Figure 9 is the principle diagram of the power module in the embodiment of the present application.

[0065] BRIEF DESCRIPTION OF DRAWINGS 1 - display control screen, 1a - operating mechanism on-off indicator, 2a - working position indicator, 3 - handle, 3a - test position indicator, 4 - second handle, 7 - pedal, 8 - operating hole, 12 - circuit breaker operating mechanism, 14 - measurement and control terminal and driving module MCU, 16 - lock hook, 17 - first visual sensor, 18 - second visual sensor, 21 - first lock post, 23 - fifth baffle, 25 - first baffle, 26 - third baffle, 27 - second lock post, 29 - fourth baffle, 30 - lock hole, 31 - second track, 32 - first track, 33 - second lead screw, 34 - second baffle, 36 - turbine, 37 - propulsion mechanism, 38 - first lead screw, 39 - limiting post, 40 - L-shaped frame, 41 - static contact, 43 - dynamic contact. DETAILED DESCRIPTION

[0066] The technical solutions in the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0067] The following specific embodiments are used to describe the technical solution of the present application in detail. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described in detail in some embodiments.

[0068] like Figures 1 to 3 As shown, a circuit breaker control system provided by an embodiment of the present invention includes an L-shaped frame 40 provided with a first track 32 and a static contact 41, a propulsion mechanism 37 provided with a second track 31, a power module, a display and control screen 1, a measurement and control terminal, a host computer, a trolley drive circuit, and an operating mechanism 12 drive circuit; the propulsion mechanism 37 is slidably provided on the first track 32; the measurement and control terminal is connected to the display and control screen 1, the host computer, the trolley drive circuit, and the operating mechanism 12 drive circuit; the trolley drive circuit is connected to the operating mechanism 12 drive circuit; the power module is used to supply power to the display and control screen 1, the measurement and control terminal, the trolley drive circuit, and the operating mechanism 12 drive circuit; the display and control screen 1 is provided on the operation panel of the circuit breaker trolley.

[0069] The trolley drive circuit is used to confirm that the circuit breaker trolley and the propulsion mechanism 37 are in the working position or the test position, and to drive the circuit breaker trolley and the propulsion mechanism 37 to move under the control of the measurement and control terminal. Figure 2 As shown, the trolley drive circuit includes a drive module MCU, a drive motor M2, the seventh and eighth contacts of the auxiliary switch FK, the contact SA-1 of the mode conversion switch SA, a first position confirmation mechanism, a second position confirmation mechanism and a limit switch TQ1; the third end of the drive module MCU is connected to the fourth end of the drive module MCU through the contact TQ1-4 of the limit switch TQ1 and the drive motor M2; the seventh end of the drive module MCU is connected to the eighth end of the drive module MCU through the contact SA-1; the seventh and eighth contacts of the auxiliary switch FK are respectively connected to the measurement and control terminal; the drive motor M2 is arranged on the L-shaped frame 40 and is connected to the propulsion mechanism 37 through the motion mechanism; the limit switch TQ1 is arranged on the upper part of the bottom plate of the circuit breaker trolley and is connected to the pedal 7 of the circuit breaker trolley; the measurement and control terminal is connected to the first and second position confirmation mechanisms.

[0070] The mode conversion switch SA is used to select the remote operation mode or the local operation mode. When the mode conversion switch SA is rotated to the remote position, the contact SA-1 is disconnected (i.e., a remote operation mode signal is generated), and the drive module MCU receives the remote operation mode signal; when the mode conversion switch SA is rotated to the local position, the contact SA-1 is closed (i.e., a local operation mode signal is generated), and the drive module MCU receives the local operation mode signal.

[0071] The driving motor M2 is used to start or stop under the control of the driving module MCU, thereby driving the propulsion mechanism 37 and the circuit breaker trolley locked with the propulsion mechanism 37 to advance, retreat or stop.

[0072] The mechanical transmission caused by the closing and opening actions of the breaker operating mechanism 12 can cause the state of the first contact of the auxiliary switch FK to change, thereby causing the states of the seventh and eighth contacts of the auxiliary switch FK to change, so the states of the seventh and eighth contacts of the auxiliary switch FK reflect the closing and opening states of the operating mechanism 12. When the seventh contact of the auxiliary switch FK is open and the eighth contact is closed, the operating mechanism 12 is in the closing state; when the seventh contact of the auxiliary switch FK is closed and the eighth contact is open, the operating mechanism 12 is in the opening state. The measurement and control terminal judges whether the operating mechanism 12 is in the opening state or the closing state according to the states of the seventh and eighth contacts of the auxiliary switch FK, and feeds back to the display and control screen 1 and the upper computer.

[0073] The first position confirmation mechanism is used to confirm whether the breaker truck and the advancing mechanism 37 are in the working position; the second position confirmation mechanism is used to confirm whether the breaker truck and the advancing mechanism 37 are in the test position; the measurement and control terminal judges whether the breaker truck and the advancing mechanism 37 are in the working position or the test position according to the feedback signals of the first and second position confirmation mechanisms.

[0074] In the remote operation mode, under the condition that the breaker truck and the advancing mechanism 37 are in the test position and the operating mechanism 12 is in the opening state, the measurement and control terminal issues a first advancing control instruction to the drive module MCU according to the advancing demand instruction issued by the upper computer; under the condition that the breaker truck and the advancing mechanism 37 are in the working position and the operating mechanism 12 is in the opening state, the measurement and control terminal issues a first exit control instruction to the drive module MCU according to the exit demand instruction issued by the upper computer; the measurement and control terminal issues a stop advancing or exit instruction to the drive module MCU when the breaker truck and the advancing mechanism 37 reach the working position or the test position. The drive module MCU controls the drive motor M2 to work according to the first advancing control instruction and the remote operation mode signal, so that the breaker truck and the advancing mechanism 37 move from the test position to the working position; the drive module MCU controls the drive motor M2 to work according to the first exit control instruction and the remote operation mode signal, so that the breaker truck and the advancing mechanism 37 move from the working position to the test position; and the drive motor M2 is controlled to stop according to the stop advancing or exit instruction.

[0075] The first position confirmation mechanism and the second position confirmation mechanism have various embodiments. In one specific embodiment of the present application, as shown in Figures 3 to 8As shown, the first position confirming mechanism comprises a travel switch SQ2, a travel switch S11, a first baffle 25 and a second baffle 34; the travel switch SQ2 is arranged at the bottom of the circuit breaker trolley, the first baffle 25 is arranged at the bottom surface of the L-shaped frame 40, and when the first baffle 25 contacts the travel switch SQ2, the circuit breaker trolley is in the working position; the travel switch S11 is arranged on the first track 32, the second baffle 34 is arranged on the advancing mechanism 37, and when the second baffle 34 contacts the travel switch S11, the advancing mechanism 37 is in the working position; the third end of the measurement and control terminal is connected with the fourth end of the measurement and control terminal through the contact S11-2 of the travel switch S11 and the contact SQ2-2 of the travel switch SQ2; the measurement and control terminal judges whether the circuit breaker trolley and the advancing mechanism 37 are in the working position according to the states of the contact S11-2 and the contact SQ2-2.

[0076] The second position confirming mechanism comprises a travel switch SQ3, a travel switch S12, a third baffle 26 and a fourth baffle 29; the travel switch SQ3 is arranged at the bottom of the circuit breaker trolley, the third baffle 26 is arranged at the bottom surface of the L-shaped frame 40, and when the third baffle 26 contacts the travel switch SQ3, the circuit breaker trolley is in the test position; the travel switch S12 is arranged on the first track 32, the fourth baffle 29 is arranged on the advancing mechanism 37, and when the fourth baffle 29 contacts the travel switch S12, the advancing mechanism 37 is in the test position; the fifth end of the measurement and control terminal is connected with the sixth end of the measurement and control terminal through the contact S12-2 of the travel switch S12 and the contact SQ3-2 of the travel switch SQ3; the measurement and control terminal judges whether the circuit breaker trolley and the advancing mechanism 37 are in the working position according to the states of the contact S12-2 and the contact SQ3-2.

[0077] The present application realizes the double confirmation of the circuit breaker trolley and the advancing mechanism 37 in the test position through the contact SQ3-2 of the third baffle 26 and the travel switch SQ3 and the contact S12-2 of the fourth baffle 29 and the travel switch S12, realizes the double confirmation of the circuit breaker trolley and the advancing mechanism 37 in the working position through the contact SQ2-2 of the first baffle 25 and the travel switch SQ2 and the contact S11-2 of the second baffle 34 and the travel switch S11, effectively improves the reliability of the remote operation and the on-site operation, and better promotes the technical progress of the railway circuit breaker product and the intelligent development of the electrified railway.

[0078] In another specific embodiment of the present application, the first position confirming mechanism comprises a first laser sensor and a second laser sensor, and the first laser sensor and the second laser sensor are used to detect whether the operating mechanism 12 trolley and the advancing mechanism 37 are in the working position respectively; the second position confirming mechanism comprises a third laser sensor and a fourth laser sensor, and the third laser sensor and the fourth laser sensor are used to detect whether the operating mechanism 12 trolley and the advancing mechanism 37 are in the test position respectively.

[0079] In another embodiment of the application, the first position confirming mechanism comprises a first infrared sensor and a second infrared sensor, and the first infrared sensor and the second infrared sensor are used to detect whether the operating mechanism 12 trolley and the advancing mechanism 37 are in the working position respectively; the second position confirming mechanism comprises a third infrared sensor and a fourth infrared sensor, and the third infrared sensor and the fourth infrared sensor are used to detect whether the operating mechanism 12 trolley and the advancing mechanism 37 are in the test position respectively.

[0080] In another embodiment of the application, the first position confirming mechanism comprises a first micro switch and a second micro switch, and the first micro switch and the second micro switch are used to detect whether the operating mechanism 12 trolley and the advancing mechanism 37 are in the working position respectively; the second position confirming mechanism comprises a third micro switch and a fourth micro switch, and the third micro switch and the fourth micro switch are used to detect whether the operating mechanism 12 trolley and the advancing mechanism 37 are in the test position respectively.

[0081] In the embodiment of the application, as shown in Figure 6 , the pedal 7 of the circuit breaker trolley is connected with the first locking column 21, and an elastic member is sleeved outside the first locking column 21, one end of the elastic member abuts against the bottom of the circuit breaker trolley, and the other end of the elastic member is fixed on the first locking column 21; the advancing mechanism 37 is provided with a locking hole 30, and the first locking column 21 cooperates with the locking hole 30 to realize the mutual locking of the circuit breaker trolley and the advancing mechanism 37; as shown in Figure 7 , the second handle 4 of the circuit breaker trolley is further connected with a locking hook 16, and the advancing mechanism 37 is provided with a second locking column 27, and the locking hook 16 cooperates with the second locking column 27 to realize the mutual locking of the circuit breaker trolley and the advancing mechanism 37. In another embodiment of the application, when the circuit breaker trolley and the advancing mechanism 37 are in the test position, other ways can also be used to realize the mutual locking of the circuit breaker trolley and the advancing mechanism 37.

[0082] As shown in Figure 2 , Figure 6 , and Figure 7 , the travel switch TQ1 is arranged on the upper part of the bottom plate of the circuit breaker trolley and is connected with the pedal 7, and the travel switch TQ1 is used to realize the electrical interlocking of the pedal 7 operation. When the pedal 7 is stepped on, the state of each contact of the travel switch TQ1 is converted, the contact TQ1-1 is converted from open to closed, and the contacts TQ1-2 and TQ1-4 are converted from closed to open.

[0083] When the circuit breaker operating mechanism 12 is in the open state, the closing control circuit of the circuit breaker operating mechanism 12 is locked by disconnecting the contact TQ1-2, preventing the circuit breaker trolley from being mistakenly closed when the circuit breaker trolley is moving, and the driving motor M2 is disconnected by disconnecting the contact TQ1-4, preventing the circuit breaker trolley from operating the propulsion mechanism 37 when the circuit breaker trolley and the propulsion mechanism 37 are not locked; when the circuit breaker operating mechanism 12 is in the closed state, the third contact of the auxiliary switch FK is closed, the opening control circuit of the circuit breaker operating mechanism 12 is closed by closing the contact TQ1-1, the circuit breaker is interlocked to prevent the circuit breaker trolley from being mistakenly operated in the closed state before the circuit breaker trolley is moving, the closing control circuit of the circuit breaker operating mechanism 12 is locked by disconnecting the contact TQ1-2, preventing the circuit breaker trolley from being mistakenly operated again when the circuit breaker trolley is moving, and the driving motor M2 is disconnected by disconnecting the contact TQ1-4, preventing the circuit breaker trolley from operating the propulsion mechanism 37 when the circuit breaker trolley and the propulsion mechanism 37 are not locked.

[0084] Based on the control system of the application, the circuit breaker trolley has three working modes: remote operation mode, local operation mode and manual operation mode.

[0085] Before the circuit breaker trolley is remotely operated, locally operated or manually operated, the circuit breaker trolley and the propulsion mechanism 37 need to be in the test position and locked to each other, and the specific operation process is as follows: the operator confirms that the circuit breaker operating mechanism 12 is in the open state, the second handle 4 of the circuit breaker trolley is in the open position, the pedal 7 of the circuit breaker trolley is stepped on, the first locking column 21 is lifted, the elastic member is compressed, the circuit breaker trolley is pushed to the second rail 31 by the handle 3, and is propelled along the second rail 31 until the circuit breaker trolley is propelled to the blocked state (the first locking column 21 falls into the locking hole 30), the second handle 4 is turned to the closed position, the locking hook 16 is locked on the second locking column 27, and the mutual locking of the circuit breaker trolley and the propulsion mechanism 37 in the test position is realized, as shown in Figure 7 The display control screen 1 and the upper computer display that the circuit breaker trolley and the propulsion mechanism 37 are in the test position.

[0086] When the circuit breaker trolley is pushed to the test position, the first locking column 21 falls into the locking hole 30 under the action of the elastic member, and the circuit breaker trolley and the pushing mechanism 37 are locked in the test position. When the third baffle 26 triggers the travel switch SQ3 and the fourth baffle 29 triggers the travel switch S12, the measurement and control terminal determines that the circuit breaker trolley and the pushing mechanism 37 are in the test position according to the action signals of the contact S12-2 and the contact SQ3-2, and sends the signals to the display and control screen 1 and the upper computer. The display and control screen 1 and the upper computer display that the circuit breaker trolley and the pushing mechanism 37 are in the test position. At the same time, the measurement and control terminal determines whether the circuit breaker operating mechanism 12 is in the opening state or the closing state according to the states of the seventh contact and the eighth contact of the auxiliary switch FK, and feeds back the signals to the display and control screen 1 and the upper computer. The display and control screen 1 and the upper computer display that the circuit breaker is in the opening state or the closing state.

[0087] The mechanical transmission caused by the closing action of the circuit breaker operating mechanism 12 causes the first contact of the auxiliary switch FK to change from closed to open, thereby cutting off the closing control circuit. The third contact of the auxiliary switch FK is closed to connect the contacts T30 and T31 of the connector T in the opening control circuit, which is prepared for the control of the opening operation. The seventh contact of the auxiliary switch FK changes from closed to open, and the eighth contact of the auxiliary switch FK changes from open to closed. The measurement and control terminal determines that the circuit breaker operating mechanism 12 is in the closing state. The mechanical transmission caused by the opening action of the circuit breaker operating mechanism 12 causes the third contact of the auxiliary switch FK to change from closed to open, thereby cutting off the opening control circuit. The first contact of the auxiliary switch FK is closed to connect the contacts T4 and T14 of the connector T in the closing control circuit, which is prepared for the control of the closing operation. The seventh contact of the auxiliary switch FK changes from open to closed, and the eighth contact of the auxiliary switch FK changes from closed to open. The measurement and control terminal determines that the circuit breaker operating mechanism 12 is in the opening state.

[0088] The pushing operation of the circuit breaker trolley and the pushing mechanism 37 in the remote operation mode: under the condition that the circuit breaker trolley and the pushing mechanism 37 are in the test position and the circuit breaker operating mechanism 12 is in the opening state, the mode switching switch SA is rotated to the remote gear, the contact SA-1 is open, and the drive module MCU receives the remote operation mode signal. The measurement and control terminal sends the first pushing control instruction to the drive module MCU according to the pushing demand instruction sent by the upper computer. The drive module MCU controls the drive motor M2 to work according to the first pushing control instruction and the remote operation mode signal, and drives the pushing mechanism 37 to move through the motion mechanism, so that the circuit breaker trolley and the pushing mechanism 37 move from the test position to the working position.

[0089] When the first baffle 25 touches the travel switch SQ2 and the second baffle 34 touches the travel switch S11, the control terminal determines that the circuit breaker truck and the advancing mechanism 37 reach the working position (as shown in Figure 8 Fig. 2) according to the action signals of the contact S11-2 and the contact SQ2-2, and sends a stop advancing instruction to the driving module MCU, which controls the driving motor M2 to stop according to the stop advancing instruction, so that the circuit breaker truck and the advancing mechanism 37 are in the working position.

[0090] The circuit breaker truck and the advancing mechanism 37 in the remote operation mode exit the operation: under the condition that the circuit breaker truck and the advancing mechanism 37 are in the working position and the circuit breaker operating mechanism 12 is in the open state, the mode conversion switch SA is rotated to the remote gear, the contact SA-1 is disconnected, and the driving module MCU receives the remote operation mode signal; the control terminal sends a first exit control instruction to the driving module MCU according to the exit demand instruction sent by the upper computer; the driving module MCU controls the driving motor M2 to work according to the first exit control instruction and the remote operation mode signal, and drives the advancing mechanism 37 to move through the movement mechanism, so that the circuit breaker truck and the advancing mechanism 37 move from the working position to the test position;

[0091] When the third baffle 26 touches the travel switch SQ3 and the fourth baffle 29 touches the travel switch S12, the control terminal determines that the circuit breaker truck and the advancing mechanism 37 reach the test position (as shown in Figure 7 Fig. 3) according to the action signals of the contact S12-2 and the contact SQ3-2, and sends a stop exit instruction to the driving module MCU, which controls the driving motor M2 to stop according to the stop exit instruction, so that the circuit breaker truck and the advancing mechanism 37 are in the test position.

[0092] The first advancing control instruction and the first exit control instruction are both sent by the control terminal to the driving module MCU. In another specific embodiment of the present application, the advancing control instruction and the exit control instruction in the remote operation mode can also be directly input through the dry contact of the driving module MCU. Specifically, as shown in Figure 2 Fig. 4, the contact SQ2-1 of the travel switch SQ2 and the contact S11-1 of the travel switch S11 are connected in series and then connected to the contacts T7 and T17 of the connector T; the contact SQ3-1 of the travel switch SQ3 and the contact S12-1 of the travel switch S12 are connected in series and then connected to the contacts T9 and T19 of the connector T; and the driving module MCU is also connected to the connector T.

[0093] When the first baffle 25 touches the travel switch SQ2, the contact SQ2-2 and the contact SQ2-1 are closed; when the second baffle 34 touches the travel switch S11, the contact S11-2 and the contact S11-1 are closed; at this time, the contact T7 and the contact T17 of the connector T are connected, and a working position feedback signal is output. When the third baffle 26 touches the travel switch SQ3, the contact SQ3-2 and the contact SQ3-1 are closed; when the fourth baffle 29 touches the travel switch S12, the contact S12-2 and the contact S12-1 are closed; at this time, the contact T9 and the contact T19 of the connector T are connected, and a test position feedback signal is output. The contact T7 and the contact T17 of the connector T are used as a working position feedback end, and the contact T9 and the contact T19 of the connector T are used as a test position feedback end. The position state of the circuit breaker trolley and the pushing mechanism 37 is fed back to the outside (for example, an indicator light or a display screen 1) through the connector T. According to the position state and the breaking state of the operating mechanism 12 of the circuit breaker, the external device directly sends a pushing control instruction to the driving module MCU through the contact T8 and the contact T18 of the connector T or directly sends an exit control instruction to the driving module MCU through the contact T6 and the contact T16 of the connector T, so that the remote operation of the circuit breaker trolley is realized.

[0094] In one specific embodiment of the present application, the pushing control instruction and the exit control instruction of the circuit breaker trolley and the pushing mechanism 37 in the on-site operation mode are generated by the display screen 1. The pushing operation of the circuit breaker trolley and the pushing mechanism 37 in the on-site operation mode is as follows: under the condition that the circuit breaker trolley and the pushing mechanism 37 are in the test position and the circuit breaker operating mechanism 12 is in the breaking state, the mode conversion switch SA is rotated to the on-site position, the contact SA-1 is closed, and the driving module MCU receives the on-site operation mode signal; the control terminal sends a second pushing control instruction to the driving module MCU according to the pushing demand instruction sent by the display screen 1; the driving module MCU controls the driving motor M2 to work according to the second pushing control instruction and the on-site operation mode signal, and drives the pushing mechanism 37 to move through the movement mechanism, so that the circuit breaker trolley and the pushing mechanism 37 move from the test position to the working position.

[0095] When the first baffle 25 touches the travel switch SQ2 and the second baffle 34 touches the travel switch S11, the control terminal determines that the circuit breaker trolley and the pushing mechanism 37 reach the working position according to the action signals of the contact S11-2 and the contact SQ2-2, and sends a stop pushing instruction to the driving module MCU. The driving module MCU controls the driving motor M2 to stop according to the stop pushing instruction, so that the circuit breaker trolley and the pushing mechanism 37 are in the working position.

[0096] The exit operation of the circuit breaker trolley and the propulsion mechanism 37 in the on-site operation mode is specifically as follows: under the condition that the circuit breaker trolley and the propulsion mechanism 37 are in the working position and the circuit breaker operating mechanism 12 is in the open state, the mode conversion switch SA is rotated to the on-site position, the contact SA-1 is closed, the on-site operation mode signal is received by the driving module MCU, the second exit control instruction is sent to the driving module MCU by the measurement and control terminal according to the exit demand instruction sent by the display and control screen 1, the driving module MCU controls the driving motor M2 to work according to the second exit control instruction and the on-site operation mode signal, the propulsion mechanism 37 is moved by the movement mechanism, and the circuit breaker trolley and the propulsion mechanism 37 are moved from the working position to the test position.

[0097] When the third baffle 26 acts on the travel switch SQ3 and the fourth baffle 29 acts on the travel switch S12, the measurement and control terminal determines that the circuit breaker trolley and the propulsion mechanism 37 reach the test position according to the action signals of the contact S12-2 and the contact SQ3-2, sends a stop exit instruction to the driving module MCU, and the driving module MCU controls the driving motor M2 to stop according to the stop exit instruction, so that the circuit breaker trolley and the propulsion mechanism 37 are in the test position.

[0098] In another specific embodiment of the present application, the propulsion control instruction and the exit control instruction in the on-site operation mode can also be generated by the knob SB2, the knob SB2 is connected with the driving module MCU, and the knob SB2 is arranged on the operation panel of the circuit breaker trolley. Under the condition that the circuit breaker trolley and the propulsion mechanism 37 are in the test position and the circuit breaker operating mechanism 12 is in the open state, the mode conversion switch SA is rotated to the on-site position, the contact SA-1 is closed, the on-site operation mode signal is received by the driving module MCU, the knob SB2 is rotated to the propulsion position, the first contact and the second contact of the knob SB2 are closed, the closing signal (i.e., the third propulsion control instruction) is input through the fifteenth end and the sixteenth end of the driving module MCU, the driving module MCU controls the driving motor M2 to work according to the third propulsion control instruction and the on-site operation mode signal, and the circuit breaker trolley and the propulsion mechanism 37 are moved from the test position to the working position; the knob SB2 is rotated to the exit position, the third contact and the fourth contact of the knob SB2 are closed, the closing signal (i.e., the third exit control instruction) is input through the thirteenth end and the fourteenth end of the driving module MCU, the driving module MCU controls the driving motor M2 to work according to the third exit control instruction and the on-site operation mode signal, and the circuit breaker trolley and the propulsion mechanism 37 are moved from the working position to the test position.

[0099] When the seventh contact of the auxiliary switch FK is closed and the eighth contact is open, it indicates that the circuit breaker operating mechanism 12 is in the open state, and the measuring and control terminal obtains the open state of the circuit breaker operating mechanism 12; when the seventh contact of the auxiliary switch FK is open and the eighth contact is closed, it indicates that the circuit breaker operating mechanism 12 is in the closed state, and the measuring and control terminal obtains the closed state of the circuit breaker operating mechanism 12. In another embodiment of the application, the open and closed states of the circuit breaker operating mechanism 12 can also be obtained in other ways, and then sent to the measuring and control terminal through the upper computer or the display control screen 1.

[0100] In order to avoid the situation that the circuit breaker handcart cannot be operated without power supply, the control system of the application also has a manual operation mode. Specifically, the handcart drive circuit further comprises a travel switch SQ1, a fifth baffle 23, an operation hole 8 and a first handle, the operation hole 8 is arranged on the operation panel of the circuit breaker handcart; the contact SQ1-1 of the travel switch SQ1 is connected in parallel across the contacts TQ1-1, the contact SQ1-2 of the travel switch SQ1 is connected in series into the branch corresponding to the contact TQ1-2, and the contact SQ1-4 of the travel switch SQ1 is connected in series into the branch corresponding to the contact TQ1-4 and the drive motor M2; the fifth baffle 23 is arranged on the upper part of the bottom plate of the circuit breaker handcart, and the fifth baffle 23 is actuated when the first handle is inserted into the operation hole 8, so that the travel switch SQ1 is actuated by the fifth baffle 23, the contact SQ1-1 is closed, and the contacts SQ1-2 and SQ1-4 are open; the first handle is connected with the movement mechanism through the operation hole 8, and the movement mechanism is actuated by operating the first handle, so as to drive the advancing mechanism 37 to act, thereby realizing the manual operation of advancing or withdrawing the circuit breaker handcart.

[0101] As shown in Figure 6 , the electrical interlocking during the manual advancing or withdrawing operation of the circuit breaker handcart is realized by the travel switch SQ1 and the fifth baffle 23, the fifth baffle 23 is actuated when the first handle is inserted into the operation hole 8, the travel switch SQ1 is actuated by the fifth baffle 23, the contact SQ1-1 is closed, and the contacts SQ1-2 and SQ1-4 are open.

[0102] If the circuit breaker operating mechanism 12 is in the open state, the closing of the circuit breaker control circuit is locked by the opening of the contact SQ1-2, so as to prevent the circuit breaker from being mistakenly closed during the manual operation, and the drive motor M2 is locked by the opening of the contact SQ1-4, so as to make the manual operation have priority; if the circuit breaker operating mechanism 12 is in the closed state, the third contact of the auxiliary switch FK is closed, the open circuit breaker control circuit is locked by the closing of the contact SQ1-1, so as to prevent the circuit breaker from being mistakenly operated by the handcart before the movement of the circuit breaker handcart, and the closing of the circuit breaker control circuit is locked by the opening of the contact SQ1-2, so as to prevent the circuit breaker from being mistakenly closed during the manual operation, and the drive motor M2 is locked by the opening of the contact SQ1-4, so as to make the manual operation have priority.

[0103] The application has a manual priority operation locking function, i.e. the electric control circuit is locked when manually operated; the application has a manual operation interlocking locking function, i.e. the interlocking circuit breaker operating mechanism 12 can only be in the open state during manual operation, the circuit breaker operating mechanism 12 cannot be closed, and the advancing mechanism 37 cannot be electrically operated.

[0104] In the specific embodiment of the application, as shown in Figure 3 The motion mechanism includes a first screw rod 38, a turbine 36 and a second screw rod 33; the first end of the first screw rod 38 is connected with the driving motor M2, the second end of the first screw rod 38 and the first end of the second screw rod 33 are respectively engaged with the turbine 36, and the second end of the second screw rod 33 is connected with the first handle.

[0105] In the remote operation mode or the on-site operation mode, the driving motor M2 drives the first screw rod 38 to move, and the first screw rod 38 drives the advancing mechanism 37 to move; in the manual operation mode, the first handle is connected with the second screw rod 33 through the operation hole 8, the first handle is rotated (clockwise or counterclockwise), the second screw rod 33 is rotated, the second screw rod 33 drives the first screw rod 38 to rotate through the turbine 36, and the movement (advancing or withdrawing) of the advancing mechanism 37 is realized.

[0106] As shown in Figure 3 In the electric advancing or withdrawing process of the advancing mechanism 37, if a fault occurs, the eleventh end and the twelfth end of the driving module MCU are connected with the contact points T27 and T37 of the connector T, a fault alarm signal is sent out to the outside through the contact points T27 and T37 of the connector T, the operator is prompted to pay attention and timely repair, meanwhile, a reset instruction is sent to the driving module MCU through the contact points T28 and T38 of the connector T through the ninth end and the tenth end of the driving module MCU, the circuit breaker trolley can also be reset locally through the reset button of the driving module MCU, the circuit breaker trolley is retreated to the test position or kept in the fault position, and the expansion of the fault is avoided.

[0107] In the specific embodiment of the application, a limiting column 39 is further arranged on the L-shaped frame 40, and the limiting column 39 is used to limit the position of the advancing mechanism 37 in the working position.

[0108] The operating mechanism 12 driving circuit is used to drive the opening and closing actions of the circuit breaker operating mechanism 12 under the control of the measurement and control terminal. As Figure 2As shown, the operating mechanism 12 drive circuit includes a drive module DL, an operating mechanism 12 energy storage module, a relay KT1, first to third contacts of an auxiliary switch FK, contacts SA-2 to SA-5 of a mode conversion switch SA, a closing coil LH and an opening coil LF; a thirteenth terminal of the drive module DL is connected with a fourteenth terminal of the drive module DL through the operating mechanism 12 energy storage module; the closing coil LH and the opening coil LF are connected with the drive module DL respectively; one end of a first contact of the auxiliary switch FK is connected with a contact T4 of a connector T through a contact SA-4, and the other end of the first contact of the auxiliary switch FK is connected with the drive module DL through a contact TQ1-2 of a travel switch TQ1; one end of a second contact of the auxiliary switch FK is connected with one end of the first contact of the auxiliary switch FK through a coil of the relay KT1, and the other end of the second contact of the auxiliary switch FK is connected with the drive module DL through a first contact of the relay KT1, and a second contact of the relay KT1 is connected in parallel to the second contact of the auxiliary switch FK; one end of a third contact of the auxiliary switch FK is connected with a contact T30 of the connector T through a contact SA-5, and the other end of the third contact of the auxiliary switch FK is connected with the drive module DL, and the other end of the third contact of the auxiliary switch FK is also connected with the drive module DL through a contact TQ1-1 of the travel switch TQ1; a contact SA-3 of the mode conversion switch SA is connected in parallel to both ends of the contact TQ1-1, and both ends of a contact SA-2 of the mode conversion switch SA are connected with the first contact of the auxiliary switch FK and the contact SA-3 respectively.

[0109] The mode conversion switch SA is used for selecting a remote operation module or an on-site operation mode; when the mode conversion switch SA is rotated to a remote gear, the contact SA-2 and the contact SA-3 are disconnected, that is, a remote operation mode signal is generated; the contact SA-4 and the contact SA-5 are closed, and a closing control instruction can be directly input to the drive module DL through the contacts T4 and T14 of the connector T, and an opening control instruction can be directly input to the drive module DL through the contacts T30 and T31 of the connector T, thereby providing another implementation mode of the closing and opening control; when the mode conversion switch SA is rotated to an on-site gear, the contact SA-2 and the contact SA-3 are closed, that is, an on-site operation mode signal is generated; and the contact SA-4 and the contact SA-5 are disconnected.

[0110] The driving module DL can drive the spring operating mechanism 12 or the permanent magnet operating mechanism 12. When the operating mechanism 12 is the spring operating mechanism 12, the operating mechanism 12 energy storage module comprises a series connection of an energy storage motor M1, a micro switch S1 and a micro switch S2. After the operating mechanism 12 energy storage is completed by the energy storage motor M1, the micro switches S1 and S2 are triggered to be disconnected by the mechanical interlocking of the operating mechanism 12, so as to cut off the energy storage circuit. When the energy storage is restarted, the micro switches S1 and S2 are triggered to be reset and closed by the mechanical interlocking of the operating mechanism 12, the energy storage circuit is turned on again, and the operating mechanism 12 energy storage motor M1 is started to store energy until completion. When the operating mechanism 12 is the permanent magnet operating mechanism 12, the operating mechanism 12 energy storage module is a power supply circuit of the permanent magnet operating mechanism 12, which provides energy for the permanent magnet operating mechanism 12 energy storage.

[0111] The closing coil LH is powered on to trigger the operating mechanism 12 transmission to execute the closing action. The mechanical transmission caused by the closing action will make the first contact point of the auxiliary switch FK switch from closed to open, cut off the closing control circuit, and make the seventh contact point of the auxiliary switch FK open and the eighth contact point of the auxiliary switch FK close, so that the operating mechanism 12 is in the closing state. The opening coil LF is powered on to trigger the operating mechanism 12 transmission to execute the opening action. The mechanical transmission caused by the opening action will make the first contact point of the auxiliary switch FK switch from open to closed, cut off the opening control circuit, and make the seventh contact point of the auxiliary switch FK close and the eighth contact point of the auxiliary switch FK open, so that the operating mechanism 12 is in the opening state.

[0112] Based on the control system of the application, the circuit breaker operating mechanism 12 has two working modes: a remote operation mode and an on-site operation mode.

[0113] In the remote operation mode, under the condition that the circuit breaker trolley and the advancing mechanism 37 are in the test position or the working position and the operating mechanism 12 is in the opening state, the measurement and control terminal issues a first closing control instruction to the driving module DL according to the closing demand instruction issued by the upper computer. Under the condition that the circuit breaker trolley and the advancing mechanism 37 are in the test position or the working position and the operating mechanism 12 is in the closing state, the measurement and control terminal issues a first opening control instruction to the driving module DL according to the opening demand instruction issued by the upper computer. The driving module DL controls the closing coil LH to be powered on according to the first closing control instruction and the remote operation mode signal to trigger the operating mechanism 12 transmission to execute the closing action, and the first contact point and the seventh contact point of the auxiliary switch FK are open, and the second contact point, the third contact point and the eighth contact point of the auxiliary switch FK are closed. The driving module DL controls the opening coil LF to be powered on according to the first opening control instruction and the remote operation mode signal to trigger the operating mechanism 12 transmission to execute the opening action, and the first contact point and the seventh contact point of the auxiliary switch FK are closed, and the second contact point, the third contact point and the eighth contact point of the auxiliary switch FK are open.

[0114] The first closing control instruction and the first opening control instruction are sent by the control terminal to the driving module DL. In another embodiment of the application, the closing control instruction and the opening control instruction in the remote operation mode can also be directly input through the contacts T4 and T14, the contacts T30 and T31 of the connector T, and specifically as shown in Figure 2 The fifth contact of the auxiliary switch FK is connected to the contacts T3 and T13 of the connector T, the sixth contact of the auxiliary switch FK is connected to the contacts T5 and T15 of the connector T, the contact SQ2-3 of the travel switch SQ2 and the contact S11-3 of the travel switch S11 form a first series branch, the contact SQ3-3 of the travel switch SQ3 and the contact S12-3 of the travel switch S12 form a second series branch, the first series branch and the second series branch are connected in parallel to form a parallel branch, and the parallel branch is connected in series in the branch between the driving module DL and the first contact of the relay KT1.

[0115] The auxiliary switch FK can feedback the opening and closing states of the operating mechanism 12. The first contact, the sixth contact and the seventh contact of the auxiliary switch FK are in the same state, the second contact, the third contact, the fifth contact and the eighth contact of the auxiliary switch FK are in the same state, the closing state of the operating mechanism 12 is fed back through the fifth contact of the auxiliary switch FK, the opening state of the operating mechanism 12 is fed back through the sixth contact of the auxiliary switch FK, the opening and closing states of the operating mechanism 12 are fed back to the outside (such as the indicator or the display screen 1) through the contacts T3 and T13, the contacts T5 and T15 of the connector T, and the external device sends the opening control instruction and the closing control instruction to the driving module DL through the contacts T30 and T31, the contacts T4 and T14 of the connector T, so as to realize the remote operation of the circuit breaker operating mechanism 12.

[0116] In one specific embodiment of the present application, the on-site operation mode of the breaker operating mechanism 12 is controlled by the display and control screen 1. The closing operation of the breaker operating mechanism 12 in the on-site operation mode is as follows: under the condition that the breaker handcart and the advancing mechanism 37 are in the test position or the working position and the operating mechanism 12 is in the open state, the mode switching switch SA is rotated to the on-site position, the contact SA-2 and the contact SA-3 are closed, the contact SA-4 and the contact SA-5 are disconnected, and the drive module DL receives the on-site operation mode signal; the second closing control instruction is sent to the drive module DL by the measurement and control terminal according to the closing demand instruction sent by the display and control screen 1; the drive module DL controls the closing coil LH to be powered on according to the second closing control instruction and the on-site operation mode signal, triggers the operating mechanism 12 transmission device to perform the closing action, the first contact and the seventh contact of the auxiliary switch FK are disconnected, the second contact, the third contact and the eighth contact of the auxiliary switch FK are closed, and the measurement and control terminal determines that the operating mechanism 12 is in the closing state according to the state of the seventh contact and the eighth contact of the auxiliary switch FK, and displays on the display and control screen 1 and the upper computer.

[0117] The opening operation of the breaker operating mechanism 12 in the on-site operation mode is as follows: under the condition that the breaker handcart and the advancing mechanism 37 are in the test position or the working position and the operating mechanism 12 is in the open state, the mode switching switch SA is rotated to the on-site position, the contact SA-2 and the contact SA-3 are closed, the contact SA-4 and the contact SA-5 are disconnected, and the drive module DL receives the on-site operation mode signal; the second opening control instruction is sent to the drive module DL by the measurement and control terminal according to the opening demand instruction sent by the display and control screen 1; the drive module DL controls the opening coil LF to be powered on according to the second opening control instruction and the on-site operation mode signal, triggers the operating mechanism 12 transmission device to perform the opening action, the first contact and the seventh contact of the auxiliary switch FK are closed, the second contact, the third contact and the eighth contact of the auxiliary switch FK are disconnected, and the measurement and control terminal determines that the operating mechanism 12 is in the opening state according to the state of the seventh contact and the eighth contact of the auxiliary switch FK, and displays on the display and control screen 1 and the upper computer.

[0118] In another specific embodiment of the present application, the on-site operation mode of the breaker operating mechanism 12 is controlled by the display and control screen 1. The closing operation of the breaker operating mechanism 12 in the on-site operation mode is as follows: under the condition that the breaker handcart and the advancing mechanism 37 are in the test position or the working position and the operating mechanism 12 is in the open state, the mode switching switch SA is rotated to the on-site position, the contact SA-2 and the contact SA-3 are closed, the contact SA-4 and the contact SA-5 are disconnected, and the drive module DL receives the on-site operation mode signal; the second closing control instruction is sent to the drive module DL by the measurement and control terminal according to the closing demand instruction sent by the display and control screen 1; the drive module DL controls the closing coil LH to be powered on according to the second closing control instruction and the on-site operation mode signal, triggers the operating mechanism 12 transmission device to perform the closing action, the first contact and the seventh contact of the auxiliary switch FK are disconnected, the second contact, the third contact and the eighth contact of the auxiliary switch FK are closed, and the measurement and control terminal determines that the operating mechanism 12 is in the closing state according to the state of the seventh contact and the eighth contact of the auxiliary switch FK, and displays on the display and control screen 1 and the upper computer.

[0119] When the conditions that the circuit breaker trolley and the advancing mechanism 37 are in the test position or the working position and the operating mechanism 12 is in the open state are met, the mode switch SA is rotated to the local gear, the contact SA-2 and the contact SA-3 are closed, the contact SA-4 and the contact SA-5 are disconnected, the local operation mode signal is received by the drive module DL; the knob SB1 is rotated to the closing gear, the first contact and the second contact of the knob SB1 are closed, the closing signal (i.e. the third closing control instruction) is input to the drive module DL, the drive module DL controls the closing coil LH to be powered on according to the third closing control instruction and the local operation mode signal, and the operating mechanism 12 transmission executes the closing action; the knob SB1 is rotated to the open gear, the third contact and the fourth contact of the knob SB1 are closed, the open signal (i.e. the third open control instruction) is input to the drive module DL, the drive module DL controls the open coil LF to be powered on according to the third open control instruction and the local operation mode signal, and the operating mechanism 12 transmission executes the open action.

[0120] In the specific embodiment of the application, the control system further comprises a first visual sensor 17, a second visual sensor 18, a current sensor LT, a current sensor L1, a current sensor L2, a current sensor L3 and a displacement sensor ZW connected with the measurement and control terminal; the first visual sensor 17 is used for monitoring the motion state of the motion mechanism, the second visual sensor 18 is used for monitoring the position state of the movable contact 43 of the circuit breaker trolley; the current sensor LT is used for monitoring the running current of the driving motor M2; the current sensor L1 is used for monitoring the closing current of the operating mechanism 12; the current sensor L2 is used for monitoring the opening current of the operating mechanism 12; the current sensor L3 is used for monitoring the energy storage current of the operating mechanism 12; and the displacement sensor ZW is used for monitoring the stroke displacement parameter of the operating mechanism 12. The measurement and control terminal feeds back these monitoring information to the display screen and the upper computer, and the display and control screen 1 and the upper computer display in real time the motion state of the motion mechanism, the position state of the movable contact 43 of the circuit breaker trolley and the running state of the driving motor M2, the opening and closing currents of the operating mechanism 12, the energy storage current of the operating mechanism 12 and the stroke displacement parameter of the operating mechanism 12.

[0121] In the embodiment, the first visual sensor 17 and the second visual sensor 18 are both cameras. By monitoring the motion state of the motion mechanism, the position state of the movable contact 43 of the circuit breaker trolley, the running state of the driving motor M2, the opening and closing currents of the operating mechanism 12 and the stroke displacement parameter of the operating mechanism 12, the basis for fault analysis can be provided. The video monitoring real-time feedbacks the position state of the circuit breaker trolley and the advancing mechanism 37, and can also be linked when the advancing mechanism 37 moves, real-time monitoring the motion of the advancing mechanism 37, timely mastering the execution state of the operation action, timely discovering faults when abnormal state is encountered, simultaneously recording relevant process image data, and facilitating fault analysis.

[0122] In the specific embodiment of the present application, as shown in Figure 9 The power module includes a capacitor bank C, a diode D1, a diode D2, a resistor R, and a relay KT2; a third series branch is formed by the diode D2, the resistor R, and the contact KT2-1 of the relay KT2 in sequence, the diode D1 is connected in parallel to the two ends of the third series branch, the positive electrode of the diode D2 and the coil of the relay KT2 are connected with the contact T10 of the connector T respectively, the positive electrode of the capacitor bank C is connected with the resistor R and the contact KT2-1 of the relay KT2, the negative electrode of the capacitor bank C is connected with the coil of the relay KT2, the contact T20 of the connector T, the handcart driving circuit, and the driving circuit of the operating mechanism 12, and the contact KT2-1 of the relay KT2 is connected with the handcart driving circuit and the driving circuit of the operating mechanism 12.

[0123] When the external power supply is connected through the contact T10 and the contact T20, the driving power supply is provided to the handcart driving circuit and the driving circuit of the operating mechanism 12 through the diode D1 respectively, and the capacitor bank C is charged and stored energy through the diode D2 and the resistor R; when the external power supply is unexpectedly lost, the coil of the relay KT2 loses power, the contact KT2-1 of the relay KT2 resets and closes, and the handcart driving circuit and the driving circuit of the operating mechanism 12 automatically switch to the standby power supply provided by the capacitor bank C, effectively solving the emergency operation demand in emergency situations.

[0124] In the specific embodiment of the present application, the driving circuit of the operating mechanism 12 further includes a voltage relay YJ, the contact YJ-1 of the voltage relay YJ is connected into the branch corresponding to the contact TQ1-2, the contact KT2-2 of the relay KT2 is connected in parallel to the two ends of the contact YJ-1 of the voltage relay YJ, the positive electrode of the capacitor bank C is further connected with the voltage measuring coil U0 of the voltage relay YJ, and the coil of the voltage relay YJ is further connected with the contact T10 of the connector T.

[0125] The voltage measuring coil U0 is used to measure the stored energy voltage of the capacitor bank C, when the stored energy voltage is lower than the under-voltage protection threshold, the contact YJ-1 of the voltage relay YJ is disconnected, cutting off the closing control circuit, ensuring that the operating mechanism 12 performs closing operation in a reliable voltage range; when the external power supply loses power, the coil of the voltage relay YJ loses voltage and interrupts the work, the contact YJ-1 is disconnected, the coil of the relay KT2 loses power, the contacts KT2-1 and KT2-2 reset and close, the capacitor bank C supplies power to the driving module MCU, the driving module DL, and the driving motor M2, and the diode D1 prevents the capacitor bank C from discharging reversely to the power supply side and other circuits.

[0126] The application realizes remote control of the pushing mechanism 37 and the operating mechanism 12 through the measurement and control terminal, and can switch between local and remote operation modes, greatly improving the convenience and flexibility of power management, effectively reducing the labor operation and maintenance cost, thereby reducing the operation intensity of operation and maintenance management and improving the work efficiency; the measurement and control terminal communicates with the upper computer to realize remote control, state information transmission, real-time alarm receiving and the like.

[0127] The application is suitable for multiple types of circuit breaker operating mechanisms 12 and multiple mode control interfaces, expands the application range and improves the universality; the control locking, manual operation locking and anti-misoperation locking are provided, the circuit breaker trolley driving fault alarm and reset functions are provided, the artificial misoperation is reduced and the safety is improved.

[0128] The control method of the circuit breaker control system in the embodiment includes control of the circuit breaker trolley and the pushing mechanism 37 and control of the circuit breaker operating mechanism 12; wherein the control of the circuit breaker trolley and the pushing mechanism 37 includes remote operation control (i.e. remote operation mode), on-site operation control (i.e. on-site operation mode) and manual operation control (i.e. manual operation mode); the control of the circuit breaker operating mechanism 12 includes remote operation control and on-site operation control.

[0129] The remote operation control of the circuit breaker trolley and the pushing mechanism 37 specifically includes:

[0130] The operator pushes the circuit breaker trolley along the second track 31, and the circuit breaker trolley and the pushing mechanism 37 are locked in the test position through the lock hook 16 and the second lock column 27 and the first lock column 21 and the lock hole 30; after the connector T is connected, the third baffle 26 drives the travel switch SQ3 to act and the fourth baffle 29 drives the travel switch S12 to act, and the circuit breaker trolley and the pushing mechanism 37 are displayed in the test position on the display control screen 1 and the upper computer;

[0131] Under the condition that the circuit breaker operating mechanism 12 is in the tripping state and the circuit breaker trolley and the pushing mechanism 37 are in the test position, the mode conversion switch is rotated to the remote gear, the contact SA-1 is disconnected, the driving module MCU receives the remote operation mode signal; when the measurement and control terminal receives the pushing demand instruction issued by the upper computer, the first pushing control instruction is issued to the driving module MCU;

[0132] The driving module MCU controls the driving motor M2 to work according to the first pushing control instruction and the remote operation mode signal, so that the circuit breaker trolley and the pushing mechanism 37 move from the test position to the working position;

[0133] When the first baffle 25 touches the travel switch SQ2 and the second baffle 34 touches the travel switch S11, the measurement and control terminal determines that the circuit breaker trolley and the advancing mechanism 37 reach the working position according to the action signals of the contact S11-2 and the contact SQ2-2, and sends a stop advancing instruction to the drive module MCU, and the drive module MCU controls the drive motor M2 to stop according to the stop advancing instruction;

[0134] When the first baffle 25 touches the travel switch SQ2 and the second baffle 34 touches the travel switch S11, the measurement and control terminal determines that the circuit breaker trolley and the advancing mechanism 37 reach the working position according to the action signals of the contact S11-2 and the contact SQ2-2, and sends a stop advancing instruction to the drive module MCU, and the drive module MCU controls the drive motor M2 to stop according to the stop advancing instruction;

[0135] When the third baffle 26 touches the travel switch SQ3 and the fourth baffle 29 touches the travel switch S12, the measurement and control terminal determines that the circuit breaker trolley and the advancing mechanism 37 reach the test position according to the action signals of the contact S12-2 and the contact SQ3-2, and sends a stop exiting instruction to the drive module MCU, and the drive module MCU controls the drive motor M2 to stop according to the stop exiting instruction.

[0136] Before remote control, the operator first pushes the circuit breaker trolley to the second rail 31, and continues to advance along the second rail 31 until the first lock post 21 falls into the lock hole 30, so that the advancing of the circuit breaker trolley is blocked, and then the second handle 4 is actuated to lock the hook 16 on the second lock post 27, so that the circuit breaker trolley and the advancing mechanism 37 are locked in the test position; after the connector T is connected, the third baffle 26 touches the travel switch SQ3 and the fourth baffle 29 touches the travel switch S12, and the measurement and control terminal determines that the circuit breaker trolley and the advancing mechanism 37 are both in the test position, and displays that the circuit breaker trolley and the advancing mechanism 37 are both in the test position on the display and control screen 1 and the upper computer.

[0137] The local operation control of the circuit breaker trolley and the advancing mechanism 37 specifically includes:

[0138] The operator advances the circuit breaker trolley along the second rail 31, and locks the circuit breaker trolley and the advancing mechanism 37 in the test position through the hook 16 and the second lock post 27, and the first lock post 21 and the lock hole 30; after the connector T is connected, the third baffle 26 touches the travel switch SQ3 and the fourth baffle 29 touches the travel switch S12, and the measurement and control terminal determines that the circuit breaker trolley and the advancing mechanism 37 are both in the test position, and displays that the circuit breaker trolley and the advancing mechanism 37 are both in the test position on the display and control screen 1 and the upper computer.

[0139] When the mode switch SA is rotated to the local position under the condition that the circuit breaker operating mechanism 12 is in the open state and the circuit breaker trolley and the pushing mechanism 37 are in the test position, the contact SA-1 is closed, the drive module MCU receives the local operation mode signal, and the measurement and control terminal sends the second pushing control instruction to the drive module MCU according to the pushing demand instruction sent by the display and control screen 1;

[0140] The drive module MCU controls the drive motor M2 to work according to the second pushing control instruction and the local operation mode signal, and drives the pushing mechanism 37 to move through the movement mechanism, so that the circuit breaker trolley and the pushing mechanism 37 move from the test position to the working position;

[0141] When the first baffle 25 acts on the travel switch SQ2 and the second baffle 34 acts on the travel switch S11, the measurement and control terminal determines that the circuit breaker trolley and the pushing mechanism 37 reach the working position according to the action signals of the contact S11-2 and the contact SQ2-2, sends the stop pushing instruction to the drive module MCU, and the drive module MCU controls the drive motor M2 to stop according to the stop pushing instruction, so that the circuit breaker trolley and the pushing mechanism 37 are in the working position;

[0142] When the circuit breaker trolley and the pushing mechanism 37 are in the working position and the circuit breaker operating mechanism 12 is in the open state, the measurement and control terminal receives the exit demand instruction sent by the display and control screen 1, sends the second exit control instruction to the drive module MCU, and the drive module MCU controls the drive motor M2 to work according to the second exit control instruction and the local operation mode signal, so that the circuit breaker trolley and the pushing mechanism 37 move from the working position to the test position;

[0143] When the third baffle 26 acts on the travel switch SQ3 and the fourth baffle 29 acts on the travel switch S12, the measurement and control terminal determines that the circuit breaker trolley and the pushing mechanism 37 reach the test position according to the action signals of the contact S12-2 and the contact SQ3-2, sends the stop exit instruction to the drive module MCU, and the drive module MCU controls the drive motor M2 to stop according to the stop exit instruction.

[0144] The manual operation control of the circuit breaker trolley and the pushing mechanism 37 specifically includes:

[0145] The operator pushes the circuit breaker trolley to the second rail 31 and continues to push along the second rail 31 until the first lock post 21 falls into the lock hole 30, so that the pushing of the circuit breaker trolley is blocked, then the second handle 4 is actuated, the lock hook 16 is locked on the second lock post 27, and the mutual locking of the circuit breaker trolley and the pushing mechanism 37 in the test position is realized;

[0146] The operating mechanism 12 is determined according to the split indication plate 1a, and whether the circuit breaker trolley is in the working position is determined according to the working position indication plate 2a, and whether the circuit breaker trolley is in the test position is determined according to the test position indication plate 3a;

[0147] When the circuit breaker operating mechanism 12 is in the split state and the circuit breaker trolley and the advancing mechanism 37 are in the test position, the first handle is inserted into the operating hole 8, the fifth baffle 23 is turned, the travel switch SQ1 is triggered through the fifth baffle 23, the split control loop is turned on through the closed contact SQ1-1, the closed control loop is locked through the contact SQ1-2, and the driving motor M2 is locked off through the open contact SQ1-4; the first handle is turned clockwise, the first screw rod 38 is driven to move through the second screw rod 33 and the turbine 36, the advancing mechanism 37 is advanced, the circuit breaker trolley and the advancing mechanism 37 are moved from the test position to the working position, and the advancing is realized; the first handle is counterclockwise, the first screw rod 38 is driven to move through the second screw rod 33 and the turbine 36, the advancing mechanism 37 is withdrawn, the circuit breaker trolley and the advancing mechanism 37 are moved from the working position to the test position, and the withdrawal is realized.

[0148] When the circuit breaker operating mechanism 12 is in the split state and the circuit breaker trolley and the advancing mechanism 37 are in the test position, the first handle is inserted into the operating hole 8, the fifth baffle 23 is turned, the travel switch SQ1 is triggered through the fifth baffle 23, the split control loop is turned on through the closed contact SQ1-1, the closed control loop is locked through the contact SQ1-2, and the driving motor M2 is locked off through the open contact SQ1-4; the first handle is turned clockwise, the first screw rod 38 is driven to move through the second screw rod 33 and the turbine 36, the advancing mechanism 37 is advanced, the circuit breaker trolley and the advancing mechanism 37 are moved from the test position to the working position, and the advancing is realized; the first handle is counterclockwise, the first screw rod 38 is driven to move through the second screw rod 33 and the turbine 36, the advancing mechanism 37 is withdrawn, the circuit breaker trolley and the advancing mechanism 37 are moved from the working position to the test position, and the withdrawal is realized.

[0149] The remote operation control of the circuit breaker operating mechanism 12 specifically includes:

[0150] When the circuit breaker trolley and the advancing mechanism 37 are in the test position or the working position and the operating mechanism 12 is in the split state, the mode conversion switch SA is rotated to the remote gear, the contacts SA-2 and SA-3 are disconnected, the contacts SA-4 and SA-5 are closed, and the driving module DL receives the remote operation mode signal; the control terminal issues a first closing control instruction to the driving module DL according to the closing demand instruction issued by the upper computer; the driving module DL controls the closing coil LH to be powered on according to the first closing control instruction and the remote operation mode signal, triggers the operating mechanism 12 transmission to execute the closing action, the first contact and the seventh contact of the auxiliary switch FK are disconnected, the second contact, the third contact and the eighth contact of the auxiliary switch FK are closed, and the closing state of the operating mechanism 12 is fed back to the control terminal;

[0151] When the circuit breaker trolley and the propulsion mechanism 37 are in the test position or the working position, and the operating mechanism 12 is in the closed state, the mode switch SA is rotated to the remote gear, the contact SA-2 and the contact SA-3 are disconnected, the contact SA-4 and the contact SA-5 are connected, and the drive module DL receives the remote operation mode signal; the control terminal sends the first opening control instruction to the drive module DL according to the opening demand instruction from the upper computer; the drive module DL controls the energization of the opening coil LF according to the first opening control instruction and the remote operation mode signal, triggers the transmission device of the operating mechanism 12 to execute the opening action, the first contact and the seventh contact of the auxiliary switch FK are connected, and the second contact, the third contact and the eighth contact of the auxiliary switch FK are disconnected, and the opening state of the operating mechanism 12 is fed back to the control terminal.

[0152] The local operation control of the circuit breaker operating mechanism 12 specifically includes:

[0153] When the circuit breaker trolley and the propulsion mechanism 37 are in the test position or the working position, and the operating mechanism 12 is in the open state, the mode switch SA is rotated to the local gear, the contact SA-2 and the contact SA-3 are connected, the contact SA-4 and the contact SA-5 are disconnected, and the drive module DL receives the local operation mode signal; the control terminal sends the second closing control instruction to the drive module DL according to the closing demand instruction from the display and control screen 1; the drive module DL controls the energization of the closing coil LH according to the second closing control instruction and the local operation mode signal, triggers the transmission device of the operating mechanism 12 to execute the closing action, the first contact and the seventh contact of the auxiliary switch FK are disconnected, and the second contact, the third contact and the eighth contact of the auxiliary switch FK are connected, and the closing state of the operating mechanism 12 is fed back to the control terminal.

[0154] When the circuit breaker trolley and the propulsion mechanism 37 are in the test position or the working position, and the operating mechanism 12 is in the closed state, the mode switch SA is rotated to the local gear, the contact SA-2 and the contact SA-3 are connected, the contact SA-4 and the contact SA-5 are disconnected, and the drive module DL receives the local operation mode signal; the control terminal sends the second opening control instruction to the drive module DL according to the opening demand instruction from the display and control screen 1; the drive module DL controls the energization of the opening coil LF according to the second opening control instruction and the local operation mode signal, triggers the transmission device of the operating mechanism 12 to execute the opening action, the first contact and the seventh contact of the auxiliary switch FK are connected, and the second contact, the third contact and the eighth contact of the auxiliary switch FK are disconnected, and the opening state of the operating mechanism 12 is fed back to the control terminal.

[0155] The above merely provides the specific embodiments of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of the changes or modifications within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A circuit breaker control system, characterized in that: The control system includes an L-shaped frame with a first track and a static contact, a propulsion mechanism with a second track, a display and control screen, a measurement and control terminal, a host computer, a trolley drive circuit, and an operating mechanism drive circuit; the propulsion mechanism is slidably mounted on the first track; the display and control screen is mounted on the operating panel of the circuit breaker trolley; The display and control screen is used to display the position status of the circuit breaker trolley and the propulsion mechanism, as well as the opening and closing status of the circuit breaker operating mechanism; The host computer is used to display the position status of the circuit breaker trolley and the propulsion mechanism and the opening and closing status of the circuit breaker operating mechanism, and to generate a propulsion or exit demand instruction in the remote operation mode and send it to the measurement and control terminal; generate an opening and closing demand instruction in the remote operation mode and send it to the measurement and control terminal; The measurement and control terminal is used to: when the circuit breaker trolley and the propulsion mechanism are in the test position and the operating mechanism is in the open state, issue a first propulsion control instruction to the trolley drive circuit according to the propulsion demand instruction issued by the host computer; when the circuit breaker trolley and the propulsion mechanism are in the working position and the circuit breaker operating mechanism is in the open state, issue a first exit control instruction to the trolley drive circuit according to the exit demand instruction issued by the host computer; when the circuit breaker trolley and the propulsion mechanism reach the working position or the test position, issue a stop propulsion or exit instruction to the trolley drive circuit; The measurement and control terminal is further configured to: issue a first closing control instruction to the operating mechanism drive circuit according to a closing demand instruction issued by the host computer, under the condition that the circuit breaker trolley and the propulsion mechanism are in the test position or the working position and the operating mechanism is in the open state; and issue a first opening control instruction to the operating mechanism drive circuit according to an opening demand instruction issued by the host computer, under the condition that the circuit breaker trolley and the propulsion mechanism are in the test position or the working position and the operating mechanism is in the closed state; The trolley drive circuit is used to: control the circuit breaker trolley and the propulsion mechanism to move from the test position to the working position according to the first propulsion control instruction and the remote operation mode signal; control the circuit breaker trolley and the propulsion mechanism to move from the working position to the test position according to the first exit control instruction and the remote operation mode signal; and control the circuit breaker trolley and the propulsion mechanism to stop according to the stop propulsion or exit instruction; wherein, the trolley drive circuit includes a drive module MCU, a drive motor M2, the seventh contact and the eighth contact of the auxiliary switch FK, the contact SA-1 of the mode conversion switch SA, the first position confirmation mechanism, the second position confirmation mechanism, and the second position confirmation mechanism. The third terminal of the drive module MCU is connected to the fourth terminal of the drive module MCU through the contact TQ1-4 of the limit switch TQ1 and the drive motor M2; the seventh terminal of the drive module MCU is connected to the eighth terminal of the drive module MCU through the contact SA-1; the seventh and eighth contacts of the auxiliary switch FK are respectively connected to the measurement and control terminal; the drive motor M2 is arranged on the L-shaped frame and connected to the propulsion mechanism through the motion mechanism; the limit switch TQ1 is arranged on the upper part of the bottom plate of the circuit breaker trolley and connected to the pedal of the circuit breaker trolley; The operating mechanism drive circuit is used to: drive the operating mechanism transmission device to perform closing action according to the first closing control instruction and the remote operation mode signal; drive the operating mechanism transmission device to perform opening action according to the first opening control instruction and the remote operation mode signal.

2. The circuit breaker control system according to claim 1, characterized in that: The first position confirmation mechanism is used to confirm whether the circuit breaker trolley and the propulsion mechanism are in the working position; the second position confirmation mechanism is used to confirm whether the circuit breaker trolley and the propulsion mechanism are in the test position; the mode conversion switch SA is used to generate a remote operation mode signal or a local operation mode signal; The measurement and control terminal is further configured to: determine whether the circuit breaker trolley and propulsion mechanism are in the test position or the working position based on feedback signals from the first position confirmation mechanism and the second position confirmation mechanism, and provide feedback to the display and control panel and the host computer; determine whether the operating mechanism is in the open state or the closed state based on the states of the seventh contact and the eighth contact of the auxiliary switch FK, and provide feedback to the display and control panel and the host computer; The drive module MCU is used to: control the drive motor M2 to operate according to the first propulsion control instruction and the remote operation mode signal, so that the circuit breaker trolley and the propulsion mechanism move from the test position to the working position; control the drive motor M2 to operate according to the first exit control instruction and the remote operation mode signal, so that the circuit breaker trolley and the propulsion mechanism move from the working position to the test position; and control the drive motor M2 to stop according to the stop propulsion or exit instruction.

3. The circuit breaker control system according to claim 1, characterized in that: The first position confirmation mechanism includes a travel switch SQ2, a travel switch S11, a first baffle, and a second baffle; the travel switch SQ2 is provided at the bottom of the circuit breaker trolley, the first baffle is provided at the bottom surface of the L-shaped frame, and when the first baffle contacts the travel switch SQ2, the circuit breaker trolley is in the working position; the travel switch S11 is provided on the first track, the second baffle is provided on the propulsion mechanism, and when the second baffle contacts the travel switch S11, the propulsion mechanism is in the working position; the third end of the measurement and control terminal is connected to the fourth end of the measurement and control terminal via the contact S11-2 of the travel switch S11 and the contact SQ2-2 of the travel switch SQ2; The second position confirmation mechanism includes a travel switch SQ3, a travel switch S12, a third baffle and a fourth baffle; the travel switch SQ3 is arranged at the bottom of the circuit breaker trolley, the third baffle is arranged at the bottom surface of the L-shaped frame, and when the third baffle contacts the travel switch SQ3, the circuit breaker trolley is in the test position; the travel switch S12 is arranged on the first track, the fourth baffle is arranged on the propulsion mechanism, and when the fourth baffle contacts the travel switch S12, the propulsion mechanism is in the test position; the fifth end of the measurement and control terminal is connected to the sixth end of the measurement and control terminal through the contact S12-2 of the travel switch S12 and the contact SQ3-2 of the travel switch SQ3.

4. The circuit breaker control system according to claim 3, characterized in that: The contact SQ2-1 of the travel switch SQ2 is connected in series with the contact S11-1 of the travel switch S11 and then connected to the connector T; the contact SQ3-1 of the travel switch SQ3 is connected in series with the contact S12-1 of the travel switch S12 and then connected to the connector T; the drive module MCU is also connected to the connector T; The two ends of the fifth contact of the auxiliary switch FK are respectively connected to the contacts T3 and T13 of the connector T; the two ends of the sixth contact of the auxiliary switch FK are respectively connected to the contacts T5 and T15 of the connector T; the contact SQ2-3 of the limit switch SQ2 and the contact S11-3 of the limit switch S11 are connected in series to form a first series branch, and the contact SQ3-3 of the limit switch SQ3 and the contact S12-3 of the limit switch S12 are connected in series to form a second series branch. The first series branch and the second series branch are connected in parallel to form a parallel branch, and the parallel branch is connected in series to the branch between the drive module DL and the first contact of the relay KT1.

5. The circuit breaker control system according to claim 1, characterized in that: The trolley drive circuit also includes a travel switch SQ1, a fifth baffle, an operating hole, and a first handle. The operating hole is provided on the operating panel of the circuit breaker trolley. The contact SQ1-1 of the travel switch SQ1 is connected in parallel to both ends of the contact TQ1-1. The contact SQ1-2 of the travel switch SQ1 is connected in series to the branch corresponding to the contact TQ1-2. The contact SQ1-4 of the travel switch SQ1 is connected in series to the branch corresponding to the contact TQ1-4 and the drive motor M2. The fifth baffle is provided on the upper portion of the bottom plate of the circuit breaker trolley, and when the first handle is inserted into the operating hole, the fifth baffle is toggled, thereby triggering the travel switch SQ1 through the fifth baffle, closing the contact SQ1-1, and disconnecting the contacts SQ1-2 and SQ1-4. The first handle is connected to the motion mechanism through the operating hole. By operating the first handle, the motion mechanism is driven to move, thereby driving the propulsion mechanism to move, thereby realizing manual operation of advancing or retreating the circuit breaker trolley.

6. The circuit breaker control system according to claim 1, characterized in that: The operating mechanism drive circuit includes a drive module DL, an operating mechanism energy storage module, a relay KT1, the first to third contacts of the auxiliary switch FK, contacts SA-2 to SA-5 of the mode conversion switch SA, a closing coil LH, and an opening coil LF; the thirteenth terminal of the drive module DL is connected to the fourteenth terminal of the drive module DL through the operating mechanism energy storage module; the closing coil LH and the opening coil LF are respectively connected to the drive module DL; one end of the first contact of the auxiliary switch FK is connected to the contact T4 of the connector T through the contact SA-4, and the other end of the first contact of the auxiliary switch FK is connected to the drive module DL through the contact TQ1-2 of the travel switch TQ1; one end of the second contact of the auxiliary switch FK is connected to the coil of the relay KT1 One end of the first contact of the auxiliary switch FK is connected to the driver module DL via the first contact of the relay KT1. The other end of the second contact of the auxiliary switch FK is connected to the driver module DL via the first contact of the relay KT1. The second contact of the relay KT1 is connected in parallel to both ends of the second contact of the auxiliary switch FK. One end of the third contact of the auxiliary switch FK is connected to the contact T30 of the connector T via the contact SA-5. One end of the third contact of the auxiliary switch FK is also connected to the driver module DL via the contact TQ1-1 of the limit switch TQ1. The other end of the third contact of the auxiliary switch FK is connected to the driver module DL. The contact SA-3 of the mode conversion switch SA is connected in parallel to both ends of the contact TQ1-1. The two ends of the contact SA-2 of the mode conversion switch SA are respectively connected to the first contact and the contact SA-3 of the auxiliary switch FK. The drive module DL is used to: control the closing coil LH to be energized according to the first closing control instruction and the remote operation mode signal, trigger the operating mechanism transmission device to perform the closing action, disconnect the first contact and the seventh contact of the auxiliary switch FK, and close the second contact, the third contact and the eighth contact of the auxiliary switch FK; control the opening coil LF to be energized according to the first opening control instruction and the remote operation mode signal, trigger the operating mechanism transmission device to perform the opening action, close the first contact and the seventh contact of the auxiliary switch FK, and disconnect the second contact, the third contact and the eighth contact of the auxiliary switch FK.

7. The circuit breaker control system according to claim 1, characterized in that: The display and control screen is also used to: generate an advance or exit demand instruction in the local operation mode and send it to the measurement and control terminal; generate an opening and closing demand instruction in the local operation mode and send it to the measurement and control terminal; The measurement and control terminal is further configured to: issue a second propulsion control instruction to the trolley drive circuit according to the propulsion demand instruction issued by the display and control panel, under the condition that the circuit breaker trolley and the propulsion mechanism are in the test position and the circuit breaker operating mechanism is in the open state; and issue a second exit control instruction to the trolley drive circuit according to the exit demand instruction issued by the display and control panel, under the condition that the circuit breaker trolley and the propulsion mechanism are in the working position and the circuit breaker operating mechanism is in the open state; The measurement and control terminal is further configured to: issue a second closing control instruction to the operating mechanism drive circuit according to the closing demand instruction issued by the display and control panel, under the condition that the circuit breaker trolley and the propulsion mechanism are in the test position or the working position and the operating mechanism is in the open state; and issue a second opening control instruction to the operating mechanism drive circuit according to the opening demand instruction issued by the display and control panel, under the condition that the circuit breaker trolley and the propulsion mechanism are in the test position or the working position and the operating mechanism is in the closed state; The trolley drive circuit is further configured to: control the circuit breaker trolley and the propulsion mechanism to move from the test position to the working position according to the second propulsion control instruction and the local operation mode signal; and control the circuit breaker trolley and the propulsion mechanism to move from the working position to the test position according to the second exit control instruction and the local operation mode signal; The operating mechanism drive circuit is further used to: drive the operating mechanism transmission device to perform closing action according to the second closing control instruction and the local operation mode signal; drive the operating mechanism transmission device to perform opening action according to the second opening control instruction and the local operation mode signal.

8. The circuit breaker control system according to any one of claims 1 to 7, characterized in that: The control system includes a power supply module, which is used to power the display and control screen, the measurement and control terminal, the trolley drive circuit and the operating mechanism drive circuit; the power supply module includes a capacitor group C, a diode D1, a diode D2, a resistor R and a relay KT2; the diode D2, the resistor R and the contact KT2-1 of the relay KT2 are connected in sequence to form a third series branch, the diode D1 is connected in parallel to both ends of the third series branch, the positive electrode of the diode D2 and the coil of the relay KT2 are respectively connected to the contact T10 of the connector T, the positive electrode of the capacitor group C is connected to the resistor R and the contact KT2-1 of the relay KT2, the negative electrode of the capacitor group C is connected to the coil of the relay KT2, the contact T20 of the connector T, the trolley drive circuit and the operating mechanism drive circuit, and the contact KT2-1 of the relay KT2 is connected to the trolley drive circuit and the operating mechanism drive circuit.

9. The circuit breaker control system according to claim 8, characterized in that: The operating mechanism drive circuit also includes a voltage relay YJ, the contact YJ-1 of the voltage relay YJ is connected in series with the branch corresponding to the contact TQ1-2, the contact KT2-2 of the relay KT2 is connected in parallel to the two ends of the contact YJ-1 of the voltage relay YJ, the positive pole of the capacitor group C is also connected to the voltage measuring coil U0 of the voltage relay YJ, and the coil of the voltage relay YJ is also connected to the contact T10 of the connector T.

10. A control method for a circuit breaker control system according to any one of claims 1 to 9, comprising remote operation control; wherein: The remote operation control of the circuit breaker trolley includes: Under the conditions that the circuit breaker operating mechanism is in the open state and the circuit breaker trolley and propulsion mechanism are in the test position, the mode conversion switch SA is rotated to the remote position, the contact SA-1 is disconnected, and the trolley drive circuit receives the remote operation mode signal; when the measurement and control terminal receives the propulsion demand instruction issued by the host computer, it sends the first propulsion control instruction to the trolley drive circuit; The trolley drive circuit controls the circuit breaker trolley and the propulsion mechanism to move from the test position to the working position according to the first propulsion control instruction and the remote operation mode signal; When the circuit breaker trolley and propulsion mechanism reach the working position, the measurement and control terminal sends a stop propulsion instruction to the trolley drive circuit, and the trolley drive circuit controls the circuit breaker trolley and propulsion mechanism to stop according to the stop propulsion instruction; Under the conditions that the circuit breaker trolley and the propulsion mechanism are in the working position and the circuit breaker operating mechanism is in the open state, when the measurement and control terminal receives the exit demand instruction issued by the host computer, it sends the first exit control instruction to the trolley drive circuit. The trolley drive circuit controls the circuit breaker trolley and the propulsion mechanism to move from the working position to the test position according to the first exit control instruction and the remote operation mode signal; When the circuit breaker trolley and propulsion mechanism reach the test position, the measurement and control terminal sends a stop exit command to the trolley drive circuit, and the trolley drive circuit controls the circuit breaker trolley and propulsion mechanism to stop according to the stop exit command; The remote operation control of the operating mechanism includes: Under the conditions that the circuit breaker trolley and propulsion mechanism are in the test position or working position and the operating mechanism is in the open state, the mode conversion switch SA is rotated to the remote position, and the operating mechanism drive circuit receives the remote operation mode signal; the measurement and control terminal sends the first closing control instruction to the operating mechanism drive circuit according to the closing demand instruction issued by the host computer; The operating mechanism drive circuit drives the operating mechanism transmission device to perform the closing action according to the first closing control command and the remote operation mode signal. The seventh contact of the auxiliary switch FK is opened and the eighth contact of the auxiliary switch FK is closed. The measurement and control terminal determines that the operating mechanism is in the closed state based on the status of the seventh and eighth contacts of the auxiliary switch FK, and displays it on the display and control screen and the host computer. Under the conditions that the circuit breaker trolley and propulsion mechanism are in the test position or working position and the operating mechanism is in the closed state, the mode conversion switch SA is rotated to the remote position, and the operating mechanism drive circuit receives the remote operation mode signal; the measurement and control terminal sends the first opening control instruction to the operating mechanism drive circuit according to the opening demand instruction issued by the host computer; The operating mechanism drive circuit drives the operating mechanism transmission device to perform the opening action according to the first opening control instruction and the remote operation mode signal. The seventh contact of the auxiliary switch FK is closed and the eighth contact of the auxiliary switch FK is opened. The measurement and control terminal determines that the operating mechanism is in the opening state according to the status of the seventh and eighth contacts of the auxiliary switch FK, and displays it on the display and control screen and the host computer.

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