Circuit breaker control system and control method

Abstract

The invention discloses a circuit breaker control system and method, and the system comprises an L-shaped frame, a propelling mechanism, a power module, a display control screen, a measurement and control terminal, an upper computer, a handcart drive loop, and an operation mechanism drive loop. The handcart driving loop comprises a driving module MCU, a driving motor M2, an auxiliary switch FK, a mode change-over switch SA, a first position confirmation mechanism, a second position confirmation mechanism and a travel switch TQ1; the operating mechanism driving loop comprises a driving module DL, an operating mechanism energy storage module, a relay KT1, an auxiliary switch FK, a mode change-over switch SA, a closing coil LH and an opening coil LF. According to the invention, remote operation of the circuit breaker handcart, the propulsion mechanism and the operation mechanism is realized through the measurement and control terminal and the two driving loops, the operation efficiency of the circuit breaker in and out of the handcart is greatly improved, and the operation intensity and the operation and maintenance cost are reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of circuit breakers, and in particular relates to a circuit breaker control system and a control method. Background Art

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

[0003] At present, the operation method of the propulsion mechanism of indoor 27.5kV railway circuit breakers is still mainly mechanical operation, which increases the operation intensity and operation and maintenance costs. Taking the propulsion mechanism as an example, its common technical solution is a mechanical propulsion system, which is composed of a trolley frame, a manual operating mechanism, an interlocking mechanism (pedal or lever), a position indication assembly and other components. If the circuit breaker trolley is pushed from the test position to the working position: first, the operator confirms that the circuit breaker is in the "open" state, the manual operating mechanism is locked in the "open" position, and the interlocking mechanism is unlocked by the foot (or the lever unlocks the interlocking mechanism), and then the trolley frame handle is manually pushed to move the trolley frame to the working position. When it is pushed to the blocked state (that is, the lock hook of the manual operating mechanism reaches the locking preparation position), the manual operating mechanism handle is moved to the "closed" position according to the corresponding indication direction, and the interlocking pedal or lever is automatically reset and locked, and the circuit breaker trolley enters the working position. If the circuit breaker trolley is exiting the operation from the working position to the test position: first, the operator confirms that the circuit breaker is in the "open" state, and then reverses the above steps.

[0004] The patent document with authorization announcement number CN205248686U discloses a circuit breaker in and out system, which drives the lead screw to rotate through a motor, and then pulls the chassis car to move through the lead screw nut, so that the chassis car moves along the track; when the circuit breaker trolley moves to the point where the static contact is inserted into the moving contact, the circuit breaker trolley enters the working position; the motor is controlled in reverse to make the circuit breaker trolley exit.

[0005] The current transformer is installed on the circuit breaker trolley, which greatly increases the overall weight of the circuit breaker trolley. When the operation and maintenance personnel operate the circuit breaker trolley to advance or withdraw, they cannot implement electric control and do not have the conditions for remote control. They can only operate manually on the spot, resulting in high operation intensity, low work efficiency, high error rate, and low safety, which limits the intelligent development of electrified railway circuit breaker products. Simply relying on manual inspection and on-site manual operation, relying too much on people's work experience and operating strength, increases the risk of human factors, high operation intensity, low work efficiency, and invisibly increases the labor cost and time cost of operation and maintenance work; during on-site operation, if a fault or misoperation occurs, it will have a serious impact on the safety of operators and equipment, and remote electric control cannot be achieved, and it cannot 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 are too dependent 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 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 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 arranged on the first track; the display control screen is arranged on the operating panel of the circuit breaker trolley;

[0008] The display control screen 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;

[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: under the condition that 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; 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, 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 also used to: 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, issue a first closing control instruction to the operating mechanism drive circuit according to the 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 closed state, issue a first opening control instruction to the operating mechanism drive circuit according to the opening demand instruction issued by the host computer;

[0012] The trolley driving 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;

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

[0014] Furthermore, the trolley driving circuit includes a driving module MCU, a driving motor M2, the seventh contact and the eighth contact 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 travel switch TQ1; the third end of the driving module MCU is connected to the fourth end of the driving module MCU through the contact TQ1-4 of the travel switch TQ1 and the driving motor M2; the seventh end of the driving module MCU is connected to the eighth end of the driving module MCU through the contact SA-1; the seventh contact and the eighth contact of the auxiliary switch FK are respectively connected to the measurement and control terminal; the driving motor M2 is arranged on the L-shaped frame and is connected to the propulsion mechanism through a motion mechanism; the travel switch TQ1 is arranged on the upper part of the bottom plate of the circuit breaker trolley and is connected to the pedal of the circuit breaker trolley;

[0015] 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;

[0016] The measurement and control terminal is also used to: determine whether the circuit breaker trolley and the propulsion mechanism are in the test position or the working position according to the feedback signals of the first position confirmation mechanism and the second position confirmation mechanism, and feed back to the display and control screen and the host computer; determine whether the operating mechanism 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 feed back to the display and control screen and the host computer;

[0017] The drive module MCU is used to: control the drive motor M2 to work 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 work 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.

[0018] Further, 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 arranged at the bottom of the circuit breaker trolley, 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 trolley is in a working position; the travel switch S11 is arranged on a first track, the second baffle is arranged on a propulsion mechanism, and when the second baffle contacts the travel switch S11, the propulsion mechanism is in a working position; the third end of the measurement and control terminal is connected to 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;

[0019] 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 is in contact with 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 is in contact with 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.

[0020] Furthermore, 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;

[0021] 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 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 series into the branch between the drive module DL and the first contact of the relay KT1.

[0022] Furthermore, the trolley driving circuit also includes a travel switch SQ1, a fifth baffle, an operating hole and a first handle, wherein 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, and the contact SQ1-4 of the travel switch SQ1 is connected in series to 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 trolley, and when the first handle is inserted into the operating hole, the fifth baffle is toggled, and the travel switch SQ1 is triggered through the fifth baffle, the contact SQ1-1 is closed, and the contacts SQ1-2 and SQ1-4 are disconnected; the first handle is connected to the motion mechanism through the operating hole, and the motion mechanism is driven to move by operating the first handle, thereby driving the propulsion mechanism to move, thereby realizing the manual operation of advancing or withdrawing the circuit breaker trolley.

[0024] Furthermore, 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 end of the drive module DL is connected to the fourteenth end 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 drive module DL through the relay KT1 The coil is connected to one end of the first contact of the auxiliary switch FK, the other end of the second contact of the auxiliary switch FK is connected to the drive module DL through the first contact of the relay KT1, and the second contact of the relay KT1 is connected in parallel to the two 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 through the contact SA-5, and one end of the third contact of the auxiliary switch FK is also connected to the drive module DL through the contact TQ1-1 of the travel switch TQ1, and the other end of the third contact of the auxiliary switch FK is connected to the drive module DL; the contact SA-3 of the mode conversion switch SA is connected in parallel to the two ends of the contact TQ1-1, and 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;

[0025] The driving 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, 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 closed; 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, the first contact and the seventh contact of the auxiliary switch FK are closed, and the second contact, the third contact and the eighth contact of the auxiliary switch FK are disconnected.

[0026] Furthermore, 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;

[0027] The measurement and control terminal is also used for: 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, issuing a second propulsion control instruction to the trolley drive circuit according to the propulsion demand instruction issued by the display and control screen; 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, issuing a second exit control instruction to the trolley drive circuit according to the exit demand instruction issued by the display and control screen;

[0028] The measurement and control terminal is also used to: 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, issue a second closing control instruction to the operating mechanism drive circuit according to the closing demand instruction issued by the display and control screen; 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, issue a second opening control instruction to the operating mechanism drive circuit according to the opening demand instruction issued by the display and control screen;

[0029] The trolley drive circuit is also used 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; 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;

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

[0031] Further, the trolley driving circuit further comprises a knob SB2, and the knob SB2 is connected to the trolley driving circuit;

[0032] The knob SB2 is used to generate a third propulsion control instruction or a third exit control instruction, and 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 third 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 third exit control instruction and the local operation mode signal;

[0033] The operating mechanism driving circuit also includes a knob SB1; the first contact and the second contact of the knob SB1 are connected in series between the contact SA-2 and the first contact of the auxiliary switch FK, and the third contact and the fourth contact of the knob SB1 are connected in series between the contact SA-3 and the third contact of the auxiliary switch FK; the knob SB1 is used to generate a third opening control instruction or a third closing control instruction;

[0034] The operating mechanism drive circuit is also used to: drive the operating mechanism transmission device to perform closing action according to the third closing control instruction and the local operation mode signal; drive the operating mechanism transmission device to perform opening action according to the third opening control instruction and the local operation mode signal.

[0035] Furthermore, the control system also includes a first visual sensor, a second visual sensor, a current sensor LT, a current sensor L1, a current sensor L2, a current sensor L3 and a displacement sensor ZW connected to the measurement and control terminal; the first visual sensor is used to monitor the motion state of the motion mechanism, and the second visual sensor is used to monitor the position state of the moving contact of the circuit breaker trolley; the current sensor LT is used to monitor the operating current of the drive motor M2; the current sensor L1 is used to monitor the closing current of the operating mechanism; the current sensor L2 is used to monitor the opening current of the operating mechanism; the current sensor L3 is used to monitor the energy storage current of the operating mechanism; the displacement sensor ZW is used to monitor the stroke displacement parameter of the operating mechanism;

[0036] The display control screen and the host computer are also used to display in real time the motion state of the motion mechanism, the position state of the moving contact of the circuit breaker trolley and the operating state of the drive motor M2, the opening and closing current of the operating mechanism and the travel displacement parameters of the operating mechanism.

[0037] Furthermore, the power 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.

[0038] Furthermore, the operating mechanism driving 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 both 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.

[0039] Based on the same concept, the present invention also provides a control method of the circuit breaker control system as described above, including remote operation control; wherein the remote operation control of the circuit breaker trolley includes:

[0040] Under the condition 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;

[0041] The trolley driving 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;

[0042] When the circuit breaker trolley and the propulsion mechanism reach the working position, the measurement and control terminal sends a stop propulsion command to the trolley drive circuit, and the trolley drive circuit controls the circuit breaker trolley and the propulsion mechanism to stop according to the stop propulsion command;

[0043] 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, 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, and 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;

[0044] When the circuit breaker trolley and the 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 the propulsion mechanism to stop according to the stop exit command;

[0045] Wherein, the remote operation control of the operating mechanism includes:

[0046] 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, 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;

[0047] The operating mechanism driving 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, and the eighth contact of the auxiliary switch FK is closed. The measurement and control terminal determines that the operating mechanism is in the closing state according to the states of the seventh and eighth contacts of the auxiliary switch FK, and displays it on the display and control screen and the host computer;

[0048] 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 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;

[0049] 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 contact and the eighth contact of the auxiliary switch FK, and displays it on the display and control screen and the host computer.

[0050] Beneficial Effects

[0051] Compared with the prior art, the advantages of the present invention are:

[0052] The present invention realizes confirmation that the circuit breaker trolley and the propulsion mechanism are in the test position through the second position confirmation mechanism, and realizes confirmation that the circuit breaker trolley and the propulsion mechanism are in the working position through the first position confirmation mechanism; under the condition that the circuit breaker trolley and the propulsion mechanism are in the working position or the test position, and the circuit breaker operating mechanism is in the open state, the remote exit or propulsion operation of the circuit breaker trolley and the propulsion mechanism is realized through the measurement and control terminal and the drive module MCU, which greatly improves the operation efficiency of the circuit breaker in and out of the vehicle and reduces the operation intensity and operation and maintenance costs;

[0053] 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 opening and closing state, the present invention realizes the remote closing and opening operation of the circuit breaker operating mechanism through the measurement and control terminal and the drive module DL, which greatly improves the opening and closing operation reliability of the circuit breaker operating mechanism and reduces the risk of misoperation.

[0054] The present invention greatly reduces the operation intensity and operation and maintenance cost of the circuit breaker, improves work efficiency, and enhances the convenience and flexibility of power management through remote operation of the circuit breaker trolley, the propulsion mechanism, and the circuit breaker operating mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] In order to more clearly illustrate the technical solution of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only one embodiment of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0056] Figure 1 is a structural block diagram of a circuit breaker control system in an embodiment of the present invention;

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

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

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

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

[0061] Figure 6 is a partial cross-sectional view of a circuit breaker trolley in an embodiment of the present invention;

[0062] Figure 7 1 is a schematic diagram of the test position of the circuit breaker trolley in an embodiment of the present invention;

[0063] Figure 8 Schematic diagram of the working position of the circuit breaker trolley in the embodiment of the present invention;

[0064] Fig. 9 It is a schematic diagram of a power supply module in an embodiment of the present invention.

[0065] Explanation of the accompanying drawings: 1-display and control screen, 1a-operating mechanism separation and combination 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 drive module MCU, 16-lock hook, 17-first visual sensor, 18-second visual sensor, 21-first lock column, 23-fifth baffle, 25-first baffle, 26-third baffle, 27-second lock column, 29-fourth baffle, 30-lock hole, 31-second rail, 32-first rail, 33-second lead screw, 34-second baffle, 36-turbine, 37-propulsion mechanism, 38-first lead screw, 39-limiting column, 40-L-shaped frame, 41-static contact, 43-moving contact. DETAILED DESCRIPTION

[0066] The following is a clear and complete description of the technical solutions in the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0067] The technical solution of the present application is described in detail with specific embodiments below. 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 arranged on the first track 32; the measurement and control terminal is connected with 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 with 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 arranged on the operation panel of the circuit breaker trolley.

[0069] The trolley driving 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 driving circuit includes a driving module MCU, a driving motor M2, the seventh contact and the eighth contact 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 travel switch TQ1; the third end of the driving module MCU is connected to the fourth end of the driving module MCU through the contact TQ1-4 of the travel switch TQ1 and the driving motor M2; the seventh end of the driving module MCU is connected to the eighth end of the driving module MCU through the contact SA-1; the seventh contact and the eighth contact of the auxiliary switch FK are respectively connected to the measurement and control terminal; the driving motor M2 is arranged on the L-shaped frame 40 and is connected to the propulsion mechanism 37 through the motion mechanism; the travel 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 position confirmation mechanism and the second position confirmation mechanism.

[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 work 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, withdraw or stop.

[0072] The mechanical transmission caused by the opening and closing action of the circuit breaker operating mechanism 12 will 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. Therefore, the states of the seventh and eighth contacts of the auxiliary switch FK reflect the opening and closing states of the operating mechanism 12. When the seventh contact of the auxiliary switch FK is disconnected and the eighth contact is closed, the operating mechanism 12 is in the closed state; when the seventh contact of the auxiliary switch FK is closed and the eighth contact is disconnected, the operating mechanism 12 is in the open state. The measurement and control terminal determines whether the operating mechanism 12 is in the open state or the closed state according to the states of the seventh and eighth contacts of the auxiliary switch FK, and feeds back to the display control screen 1 and the host computer.

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

[0074] In the remote operation mode, under the condition that the circuit breaker trolley and the propulsion mechanism 37 are in the test position and the operating mechanism 12 is in the open state, the measurement and control terminal sends the first propulsion control instruction to the drive module MCU according to the propulsion demand instruction issued by the host computer; 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 measurement and control terminal sends the first exit control instruction to the drive module MCU according to the exit demand instruction issued by the host computer; the measurement and control terminal sends the stop propulsion or exit instruction to the drive module MCU when the circuit breaker trolley and the propulsion 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 propulsion control instruction and the remote operation mode signal, so that the circuit breaker trolley and the propulsion 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 circuit breaker trolley and the propulsion mechanism 37 move from the working position to the test position; and controls the drive motor M2 to stop according to the stop propulsion or exit instruction.

[0075] There are many implementations of the first position confirmation mechanism and the second position confirmation mechanism. In a specific implementation of the present invention, Figures 3 to 8As shown, the first position confirmation mechanism includes 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 on 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 propulsion mechanism 37, and when the second baffle 34 contacts the travel switch S11, the propulsion mechanism 37 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 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 determines whether the circuit breaker trolley and the propulsion 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 confirmation mechanism includes 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 propulsion mechanism 37, and when the fourth baffle 29 contacts the travel switch S12, the propulsion mechanism 37 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; the measurement and control terminal determines whether the circuit breaker trolley and the propulsion mechanism 37 are in the working position according to the status of the contact S12-2 and the contact SQ3-2.

[0077] The present invention realizes double confirmation that the circuit breaker trolley and the propulsion mechanism 37 are in the test position through the third baffle plate 26 and the contact SQ3-2 of the travel switch SQ3, and the fourth baffle plate 29 and the contact S12-2 of the travel switch S12, and realizes double confirmation that the circuit breaker trolley and the propulsion mechanism 37 are in the working position through the first baffle plate 25 and the contact SQ2-2 of the travel switch SQ2, and the second baffle plate 34 and the contact S11-2 of the travel switch S11, which effectively improves the reliability of remote operation and local operation, and better promotes the technological progress of railway circuit breaker products and the intelligent development of electrified railways.

[0078] In another specific embodiment of the present invention, the first position confirmation mechanism includes a first laser sensor and a second laser sensor, which respectively detect whether the operating mechanism 12 trolley and the propulsion mechanism 37 are in the working position through the first laser sensor and the second laser sensor; the second position confirmation mechanism includes a third laser sensor and a fourth laser sensor, which respectively detect whether the operating mechanism 12 trolley and the propulsion mechanism 37 are in the test position through the third laser sensor and the fourth laser sensor.

[0079] In another specific embodiment of the present invention, the first position confirmation mechanism includes a first infrared sensor and a second infrared sensor, and the first infrared sensor and the second infrared sensor are used to respectively detect whether the operating mechanism 12 trolley and the propulsion mechanism 37 are in the working position; the second position confirmation mechanism includes a third infrared sensor and a fourth infrared sensor, and the third infrared sensor and the fourth infrared sensor are used to respectively detect whether the operating mechanism 12 trolley and the propulsion mechanism 37 are in the test position.

[0080] In another specific embodiment of the present invention, the first position confirmation mechanism includes a first micro switch and a second micro switch, and the first micro switch and the second micro switch are used to respectively detect whether the operating mechanism 12 trolley and the propulsion mechanism 37 are in the working position; the second position confirmation mechanism includes a third micro switch and a fourth micro switch, and the third micro switch and the fourth micro switch are used to respectively detect whether the operating mechanism 12 trolley and the propulsion mechanism 37 are in the test position.

[0081] In a specific embodiment of the present invention, Figure 6 As shown, the pedal 7 of the circuit breaker trolley is connected to the first lock column 21, an elastic member is provided on the outer cover of the first lock 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 to the first lock column 21; a lock hole 30 is provided on the propulsion mechanism 37, and the first lock column 21 cooperates with the lock hole 30 to realize the mutual locking of the circuit breaker trolley and the propulsion mechanism 37; Figure 7 As shown, the second handle 4 of the circuit breaker trolley is also connected to the lock hook 16, and a second lock column 27 is provided on the propulsion mechanism 37. The lock hook 16 cooperates with the second lock column 27 to realize the mutual locking of the circuit breaker trolley and the propulsion mechanism 37. In another specific embodiment of the present invention, when the circuit breaker trolley and the propulsion mechanism 37 are in the test position, other methods can also be used to realize the mutual locking of the circuit breaker trolley and the propulsion mechanism 37.

[0082] like Figure 2 , Figure 6 and Figure 7 As shown, the travel switch TQ1 is arranged on the upper part of the bottom plate of the circuit breaker trolley and is connected to the pedal 7. The travel switch TQ1 realizes the electrical interlocking of the operation of the pedal 7. When the pedal 7 is stepped on, the state conversion of each contact of the travel switch TQ1 is triggered, and the contact TQ1-1 changes from open to closed, and the contacts TQ1-2 and TQ1-4 change 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 to prevent the circuit breaker trolley from closing by mistake when the circuit breaker trolley moves, and the drive motor M2 is disconnected by the contact TQ1-4 to prevent the circuit breaker trolley and the propulsion mechanism 37 from being operated when the circuit breaker trolley is not locked; when the circuit breaker operating mechanism 12 is in the closed state, the third contact of the auxiliary switch FK is closed, and the opening control circuit of the circuit breaker operating mechanism 12 is turned on by closing the contact TQ1-1. Before the circuit breaker trolley moves, the circuit breaker is interlocked to open to prevent the circuit breaker trolley from being operated by mistake in the closed state. At the same time, the closing control circuit of the circuit breaker operating mechanism 12 is locked by disconnecting the contact TQ1-2 to prevent the circuit breaker trolley from closing by mistake again when the circuit breaker trolley moves, and the drive motor M2 is disconnected by disconnecting the contact TQ1-4 to prevent the circuit breaker trolley and the propulsion mechanism 37 from being operated when the circuit breaker trolley is not locked.

[0084] Based on the control system of the present invention, 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 with each other. The specific operation process is: the operator confirms that the circuit breaker operating mechanism 12 is in the open state, and the second handle 4 of the circuit breaker trolley is in the open position. Here, the pedal 7 of the circuit breaker trolley is stepped on to lift the first lock column 21, and the elastic member is compressed. The circuit breaker trolley is pushed to the second track 31 through the handle 3 and pushed along the second track 31 until the circuit breaker trolley is pushed to the blocked state (the first lock column 21 falls into the lock hole 30), and the second handle 4 is moved to the closed position to lock the lock hook 16 on the second lock column 27, so that the circuit breaker trolley and the propulsion mechanism 37 are mutually locked in the test position, as shown in FIG. Figure 7 As shown, the display control screen 1 and the host 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, under the action of the elastic member, the first lock column 21 resets itself and falls into the lock hole 30, causing the advancement to be blocked, and at the same time, the circuit breaker trolley and the pushing mechanism 37 are mutually locked in the test position; when the third baffle 26 triggers the travel switch SQ3 to act and the fourth baffle 29 triggers the travel switch S12 to act, 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 contacts S12-2 and SQ3-2, and sends them to the display control screen 1 and the host computer, and the display control screen 1 and the host 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 open state or the closed state according to the states of the seventh and eighth contacts of the auxiliary switch FK, and feeds back to the display control screen 1 and the host computer, and the display control screen 1 and the host computer display whether the circuit breaker is in the open state or the closed 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 closes and connects the opening control circuit between the contacts T30 and T31 of the connector T, preparing 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 thus determines that the circuit breaker operating mechanism 12 is in the closed 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 closes and connects the closing control circuit between the contacts T4 and T14 of the connector T. In preparation 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 thus 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 open state, the mode conversion switch SA is rotated to the remote position, the contact SA-1 is disconnected, 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 host 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 triggers the travel switch SQ2 to operate and the second baffle 34 triggers the travel switch S11 to operate, the measurement and control terminal determines that the circuit breaker trolley and the propulsion mechanism 37 have reached the working position (such as Figure 8 As shown), the drive module MCU is issued a stop propulsion instruction, and the drive module MCU controls the drive motor M2 to stop according to the stop propulsion instruction, so that the circuit breaker trolley and the propulsion mechanism 37 are in the working position.

[0090] Exit operation of the circuit breaker trolley and the propulsion mechanism 37 in the remote operation mode: 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 remote position, the contact SA-1 is disconnected, and the drive module MCU receives the remote operation mode signal; the measurement and control terminal sends the first exit control instruction to the drive module MCU according to the exit demand instruction sent by the host computer; the drive module MCU controls the drive motor M2 to work according to the first exit control instruction and the remote operation mode signal, and drives the propulsion mechanism 37 to move through the motion mechanism, so that the circuit breaker trolley and the propulsion mechanism 37 move from the working position to the test position;

[0091] When the third baffle 26 triggers the travel switch SQ3 to operate, and the fourth baffle 29 triggers the travel switch S12 to operate, the measurement and control terminal determines that the circuit breaker trolley and the propulsion mechanism 37 have reached the test position (such as Figure 7 As shown), the drive module MCU is issued a stop exit instruction, and the drive module MCU controls the drive 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.

[0092] The first propulsion control instruction and the first exit control instruction are both sent by the measurement and control terminal to the drive module MCU. In another specific implementation of the present invention, the propulsion control instruction and the exit control instruction in the remote operation mode can also be directly input through the dry contact of the drive module MCU, specifically: Figure 2 As shown, the contact SQ2-1 of the limit switch SQ2 is connected in series with the contact S11-1 of the limit switch S11 and then connected to the contacts T7 and T17 of the connector T; the contact SQ3-1 of the limit switch SQ3 is connected in series with the contact S12-1 of the limit switch S12 and then connected to the contacts T9 and T19 of the connector T; the drive module MCU is also connected to the connector T.

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

[0094] In a specific embodiment of the present invention, the push control instruction and exit control instruction of the circuit breaker trolley and the push mechanism 37 in the local operation mode are generated by the display and control screen 1, and the push operation of the circuit breaker trolley and the push mechanism 37 in the local operation mode is specifically as follows: under the condition that the circuit breaker trolley and the push 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 local gear, the contact SA-1 is closed, and the drive module MCU receives the local operation mode signal; the measurement and control terminal sends a second push control instruction to the drive module MCU according to the push demand instruction sent by the display and control screen 1; the drive module MCU controls the drive motor M2 to work according to the second push control instruction and the local operation mode signal, and drives the push mechanism 37 to move through the motion mechanism, so that the circuit breaker trolley and the push mechanism 37 move from the test position to the working position;

[0095] When the first baffle 25 triggers the travel switch SQ2 to operate and the second baffle 34 triggers the travel switch S11 to operate, the measurement and control terminal determines that the circuit breaker trolley and the propulsion mechanism 37 have reached the working position according to the action signals of the contacts S11-2 and SQ2-2, and sends a stop propulsion instruction to the drive module MCU. The drive module MCU controls the drive motor M2 to stop according to the stop propulsion instruction, so that the circuit breaker trolley and the propulsion mechanism 37 are in the working position.

[0096] The exit operation of the circuit breaker trolley and the propulsion mechanism 37 in the local 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 local position, the contact SA-1 is closed, and the drive module MCU receives the local operation mode signal; the measurement and control terminal sends a second exit control instruction to the drive module MCU according to the exit demand instruction sent by the display and control screen 1; the drive module MCU controls the drive motor M2 to work according to the second exit control instruction and the local operation mode signal, and drives the propulsion mechanism 37 to move through the motion mechanism, so that the circuit breaker trolley and the propulsion mechanism 37 move from the working position to the test position;

[0097] When the third baffle 26 triggers the travel switch SQ3 to operate and the fourth baffle 29 triggers the travel switch S12 to operate, the measurement and control terminal determines that the circuit breaker trolley and the propulsion mechanism 37 have reached the test position according to the action signals of the contacts S12-2 and SQ3-2, and sends a stop exit instruction to the drive module MCU. The drive module MCU controls the drive 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 implementation of the present invention, the propulsion control command and the exit control command in the local operation mode can also be generated by a knob SB2, the knob SB2 is connected to the drive 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 local position, the contact SA-1 is closed, and the driving module MCU receives the local operation mode signal; the knob SB2 is turned to the propulsion position to close the first contact and the second contact of the knob SB2, and the closing signal (i.e., the third propulsion control instruction) is input through the fifteenth and sixteenth terminals 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 local operation mode signal, so that the circuit breaker trolley and the propulsion mechanism 37 move from the test position to the working position; the knob SB2 is turned to the exit position to close the third contact and the fourth contact of the knob SB2, and the closing signal (i.e., the third exit control instruction) is input through the thirteenth and fourteenth terminals 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 local operation mode signal, so that the circuit breaker trolley and the propulsion mechanism 37 move 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 disconnected, it indicates that the circuit breaker operating mechanism 12 is in an open state, and the measurement and control terminal obtains the open state of the circuit breaker operating mechanism 12; when the seventh contact of the auxiliary switch FK is disconnected and the eighth contact is closed, it indicates that the circuit breaker operating mechanism 12 is in a closed state, and the measurement and control terminal obtains the closed state of the circuit breaker operating mechanism 12. In another embodiment of the present invention, other methods can also be used to obtain the open and closed states of the circuit breaker operating mechanism 12, and then send them to the measurement and control terminal through the host computer or the display and control screen 1.

[0100] In order to avoid being unable to operate the circuit breaker trolley when there is no power supply, the control system of the present invention also has a manual operation mode. Specifically, the trolley driving circuit also includes a travel switch SQ1, a fifth baffle 23, an operating hole 8 and a first handle, and the operating hole 8 is arranged 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 with the branch corresponding to the contact TQ1-2, and the contact SQ1-4 of the travel switch SQ1 is connected in series with 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 trolley, and when the first handle is inserted into the operating hole 8, the fifth baffle 23 is moved, and the travel switch SQ1 is triggered by the fifth baffle 23, the contact SQ1-1 is closed, and the contacts SQ1-2 and SQ1-4 are disconnected; the first handle is connected to the motion mechanism through the operating hole 8, and the motion mechanism is driven to move by operating the first handle, thereby driving the propulsion mechanism 37 to move, thereby realizing the manual operation of advancing or withdrawing the circuit breaker trolley.

[0101] like Figure 6 As shown, the electrical interlocking of the circuit breaker trolley during manual advancement or withdrawal operation is realized by the travel switch SQ1 and the fifth baffle 23. When the first handle is inserted into the operating hole 8, the fifth baffle 23 is moved, and the fifth baffle 23 triggers the travel switch SQ1 to operate, the contact SQ1-1 is closed, and the contacts SQ1-2 and SQ1-4 are disconnected.

[0102] If the circuit breaker operating mechanism 12 is in the open state, the closing control circuit is locked by disconnecting the contact SQ1-2 to prevent the circuit breaker from closing accidentally during manual operation, and the drive motor M2 is locked by disconnecting the contact SQ1-4, so that the manual operation has priority response; if the circuit breaker operating mechanism 12 is in the closed state, the third contact of the auxiliary switch FK is closed, and the opening control circuit is closed and turned on by the contact SQ1-1. Before the circuit breaker trolley moves, the circuit breaker is interlocked to open to prevent the trolley from being operated accidentally in the closed state. At the same time, the closing control circuit is locked by disconnecting the contact SQ1-2 to prevent the circuit breaker from closing accidentally during manual operation, and the drive motor M2 is locked by disconnecting the contact SQ1-4, so that the manual operation has priority response.

[0103] The present invention has a manual priority operation locking function, that is, the electric control circuit is locked during manual operation; the present invention has a manual operation interlocking function, that is, during manual operation, the interlocked circuit breaker operating mechanism 12 can only be in the open state, the locked circuit breaker operating mechanism 12 cannot be closed, and the propulsion mechanism 37 cannot be electrically operated.

[0104] In a specific embodiment of the present invention, Figure 3 As shown, the motion mechanism includes a first screw 38, a turbine 36 and a second screw 33; the first end of the first screw 38 is connected to the drive motor M2, the second end of the first screw 38 and the first end of the second screw 33 are respectively engaged with the turbine 36, and the second end of the second screw 33 is connected to the first handle.

[0105] In the remote operation mode or the local operation mode, the first lead screw 38 is driven to move by the driving motor M2, and the first lead screw 38 drives the propulsion mechanism 37 to move; in the manual operation mode, the first handle is connected to the second lead screw 33 through the operating hole 8, and the first handle is rotated (clockwise or counterclockwise) to rotate the second lead screw 33 accordingly, and the second lead screw 33 drives the first lead screw 38 to rotate accordingly through the turbine 36, thereby realizing the movement (advancement or withdrawal) of the propulsion mechanism 37.

[0106] like Figure 3 As shown, during the electric advancement or withdrawal process of the propulsion mechanism 37, if a fault occurs, the eleventh and twelfth terminals of the drive module MCU can be connected to the contacts T27 and T37 of the connector T, and a fault alarm signal can be sent out through the contacts T27 and T37 of the connector T to prompt the operator to pay attention and conduct timely maintenance; at the same time, a reset instruction can be sent to it through the contacts T28 and T38 of the connector T via the ninth and tenth terminals of the drive module MCU, and the reset button of the drive module MCU body can also be used to reset it on the spot, so that the circuit breaker trolley returns to the test position or remains in the fault position to avoid the expansion of the fault.

[0107] In a specific embodiment of the present invention, a limiting column 39 is further provided on the L-shaped frame 40, and the limiting column 39 is used to limit the position of the propulsion mechanism 37 at 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. Figure 2As shown, the operating mechanism 12 drive circuit includes a drive module DL, an operating mechanism 12 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 end of the drive module DL is connected to the fourteenth end of the drive module DL through the operating mechanism 12 energy storage module; the closing coil LH and the opening coil LF are connected to the drive module DL respectively; 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 drive module DL through the The coil is connected to one end of the first contact of the auxiliary switch FK, the other end of the second contact of the auxiliary switch FK is connected to the drive module DL through the first contact of the relay KT1, and the second contact of the relay KT1 is connected in parallel to the two 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 through the contact SA-5, and one end of the third contact of the auxiliary switch FK is also connected to the drive module DL through the contact TQ1-1 of the travel switch TQ1, and the other end of the third contact of the auxiliary switch FK is connected to the drive module DL; the contact SA-3 of the mode conversion switch SA is connected in parallel to the two ends of the contact TQ1-1, and 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.

[0109] The mode conversion switch SA is used to select the remote operation module or the local operation mode. When the mode conversion switch SA is rotated to the remote position, the contacts SA-2 and SA-3 are disconnected, and a remote operation mode signal is generated; the contacts SA-4 and SA-5 are closed, and the closing control command can be directly input to the drive module DL through the contacts T4 and T14 of the connector T, and the opening control command can be directly input to the drive module DL through the contacts T30 and T31 of the connector T, providing another implementation method of the opening and closing control; when the mode conversion switch SA is rotated to the local position, the contacts SA-2 and SA-3 are closed, and a local operation mode signal is generated; the contacts SA-4 and 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 a spring operating mechanism 12, the operating mechanism 12 energy storage module includes a series-connected energy storage motor M1, a micro switch S1 and a micro switch S2. After the energy storage of the operating mechanism 12 is completed by the energy storage motor M1, the operating mechanism 12 mechanical interlock triggers the micro switches S1 and S2 to disconnect, thereby cutting off the energy storage circuit; when re-energy storage is required, the operating mechanism 12 mechanical interlock triggers the micro switches S1 and S2 to reset and close, the energy storage circuit is reopened, and the operating mechanism 12 energy storage motor M1 is started to store energy until completion. When the operating mechanism 12 is a permanent magnet operating mechanism 12, the operating mechanism 12 energy storage module is a permanent magnet operating mechanism 12 power supply circuit, which provides the permanent magnet operating mechanism 12 with energy storage electricity.

[0111] The closing coil LH is energized, triggering the transmission device of the operating mechanism 12 to perform the closing action. The mechanical transmission caused by the closing action will cause the first contact of the auxiliary switch FK to change from closed to open, cutting off the closing control circuit, the seventh contact of the auxiliary switch FK is open, and the eighth contact is closed, and the operating mechanism 12 is in the closed state; the opening coil LF is energized, triggering the transmission device of the operating mechanism 12 to perform the opening action. The mechanical transmission caused by the opening action will cause the first contact of the auxiliary switch FK to change from open to closed, cutting off the opening control circuit, the seventh contact of the auxiliary switch FK is closed, and the eighth contact is open, and the operating mechanism 12 is in the opening state.

[0112] Based on the control system of the present invention, the circuit breaker operating mechanism 12 has two working modes: a remote operation mode and a local operation mode.

[0113] In the remote operation mode, under the condition that 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 measurement and control terminal sends the first closing control instruction to the drive module DL according to the closing demand instruction issued by the host computer; under the condition that 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 measurement and control terminal sends the first opening control instruction to the drive module DL according to the opening demand instruction issued by the host computer. The drive module DL controls the closing coil LH to be energized according to the first closing control instruction and the remote 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, and the second contact, the third contact and the eighth contact of the auxiliary switch FK are closed; the drive module DL controls the opening coil LF to be energized according to the first opening control instruction and the remote 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, and the second contact, the third contact and the eighth contact of the auxiliary switch FK are disconnected.

[0114] The first closing control instruction and the first opening control instruction are both sent by the measurement and control terminal to the drive module DL. In another specific embodiment of the present invention, 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, and the contacts T30 and T31 of the connector T, specifically: Figure 2 As shown, 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 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 series to the branch between the drive module DL and the first contact of the relay KT1.

[0115] The auxiliary switch FK can feedback the opening and closing status 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 status of the operating mechanism 12 is fed back through the fifth contact of the auxiliary switch FK, and the opening status of the operating mechanism 12 is fed back through the sixth contact of the auxiliary switch FK. The opening and closing status of the operating mechanism 12 is fed back to the outside (for example, the indicator light or the display control screen 1) through the contacts T3 and T13, and the contacts T5 and T15 of the connector T. The external device directly sends the opening control instructions and the closing control instructions to the drive module DL through the contacts T30 and T31, and the contacts T4 and T14 of the connector T, so as to realize the remote opening and closing operation of the circuit breaker operating mechanism 12.

[0116] In a specific embodiment of the present invention, the opening and closing control instructions of the circuit breaker operating mechanism 12 in the local operation mode are generated by the display control screen 1, and the closing operation of the circuit breaker operating mechanism 12 in the local operation mode is specifically as follows: under the condition that 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 conversion 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, and the drive module DL receives the local operation mode signal; the measuring The control terminal sends a second closing control instruction to the drive module DL 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 energized according to the second closing control instruction and the local operation mode signal, triggers the operating mechanism 12 transmission device to perform the closing action, and 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 closed. The measurement and control terminal determines that the operating mechanism 12 is in the closed state according to the status of the seventh contact and the eighth contact of the auxiliary switch FK, and displays it on the display and control screen 1 and the host computer.

[0117] The opening operation of the circuit breaker operating mechanism 12 in the local operation mode is specifically as follows: under the conditions that 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 opening state, the mode conversion switch SA is rotated to the local gear, the contacts SA-2 and SA-3 are closed, the contacts SA-4 and SA-5 are disconnected, and the drive module DL receives the local operation mode signal; the measurement and control terminal sends a second opening control instruction to the drive module DL 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 energized according to the second opening control instruction and the local operation mode signal, triggering 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, and 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 status of the seventh contact and the eighth contact of the auxiliary switch FK, and displays it on the display and control screen 1 and the host computer.

[0118] In another specific embodiment of the present invention, the opening and closing control instructions in the local operation mode can also be generated by the knob SB1, the first contact and the second contact of the knob SB1 are connected in series between the contact SA-2 and the first contact of the auxiliary switch FK, and the third contact and the fourth contact of the knob SB1 are connected in series between the contact SA-3 and the third contact of the auxiliary switch FK; the knob SB1 is used to generate a third opening control instruction or a third closing control instruction.

[0119] Under the condition that 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 conversion switch SA is rotated to the local position, the contacts SA-2 and SA-3 are closed, the contacts SA-4 and SA-5 are disconnected, and the drive module DL receives the local operation mode signal; the knob SB1 is turned to the closing position to close the first contact and the second contact of the knob SB1, and the closing signal (i.e., the third closing control instruction) is input to the drive module DL, and the drive module DL controls the closing coil LH to be energized according to the third closing control instruction and the local operation mode signal, triggering the operating mechanism 12 transmission device to perform the closing action; the knob SB1 is turned to the opening position to close the third contact and the fourth contact of the knob SB1, and the closing signal (i.e., the third opening control instruction) is input to the drive module DL, and the drive module DL controls the opening coil LF to be energized according to the third opening control instruction and the local operation mode signal, triggering the operating mechanism 12 transmission device to perform the opening action.

[0120] In a specific embodiment of the present invention, the control system further includes 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 to the measurement and control terminal; the first visual sensor 17 is used to monitor the motion state of the motion mechanism, the second visual sensor 18 is used to monitor the position state of the moving contact 43 of the circuit breaker trolley; the current sensor LT is used to monitor the operating current of the drive motor M2; the current sensor L1 is used to monitor the closing current of the operating mechanism 12; the current sensor L2 is used to monitor the opening current of the operating mechanism 12; the current sensor L3 is used to monitor the energy storage current of the operating mechanism 12; and the displacement sensor ZW is used to monitor the travel displacement parameter of the operating mechanism 12. The measurement and control terminal feeds back these monitoring information to the display screen and the host computer, and the display and control screen 1 and the host computer display the motion state of the motion mechanism, the position state of the moving contact 43 of the circuit breaker trolley and the operating state of the drive motor M2, the opening and closing current of the operating mechanism 12, the energy storage current of the operating mechanism 12 and the travel displacement parameter of the operating mechanism 12 in real time.

[0121] In this embodiment, both the first visual sensor 17 and the second visual sensor 18 are cameras. By monitoring the motion state of the motion mechanism, the position state of the moving contact 43 of the circuit breaker trolley, the operating state of the drive motor M2, the opening and closing current of the operating mechanism 12, and the stroke displacement parameter of the operating mechanism 12, a basis for fault analysis can be provided. Video monitoring provides real-time feedback on the position state of the circuit breaker trolley and the propulsion mechanism 37, and can also be linked when the propulsion mechanism 37 moves, monitor the motion of the propulsion mechanism 37 in real time, and grasp the execution state of the operating action in a timely manner. In case of abnormal conditions, faults can be discovered in a timely manner, and relevant process image data can be recorded at the same time to facilitate fault analysis.

[0122] In a specific embodiment of the present invention, Fig. 9 As shown, the power 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 12 drive circuit, and the contact KT2-1 of the relay KT2 is connected to the trolley drive circuit and the operating mechanism 12 drive circuit.

[0123] When the external power supply is connected through contacts T10 and T20, the driving power is provided to the trolley driving circuit and the operating mechanism 12 driving circuit respectively through the diode D1, and the capacitor group C is charged and stored through the diode D2 and the resistor R; when the external power supply loses power unexpectedly, the coil of the relay KT2 loses power, the contact KT2-1 of the relay KT2 resets and closes, and the trolley driving circuit and the operating mechanism 12 driving circuit automatically switch to the backup power supply provided by the capacitor group C, which effectively solves the emergency operation needs in emergency situations.

[0124] In a specific embodiment of the present invention, the driving circuit of the operating mechanism 12 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.

[0125] The voltage measuring coil U0 is used to measure the energy storage voltage of the capacitor group C. When the energy storage voltage is lower than the undervoltage protection threshold, the contact YJ-1 of the voltage relay YJ is disconnected, cutting off the closing control circuit to ensure that the operating mechanism 12 performs the closing operation within a reliable voltage range; when the external power supply fails, the coil of the voltage relay YJ loses pressure and interrupts work, the contact YJ-1 is disconnected, the coil of the relay KT2 loses power, the contacts KT2-1 and KT2-2 are reset and closed, and the capacitor group C supplies power to the drive module MCU, the drive module DL and the drive motor M2. The diode D1 prevents the capacitor group C from discharging in reverse to the power supply side and other circuits.

[0126] The present invention realizes remote control of the propulsion mechanism 37 and the operating mechanism 12 through the measurement and control terminal, and can switch between local and remote operation modes, which greatly improves the convenience and flexibility of power management, effectively reduces the manpower operation and maintenance costs, thereby reducing the operational intensity of operation and maintenance management and improving work efficiency; the measurement and control terminal communicates with the host computer to realize remote control, status information transmission, reception of real-time alarms, etc.

[0127] The present invention is suitable for multiple types of circuit breaker operating mechanisms 12 and multi-mode control interfaces, expands the scope of application and improves versatility; it is provided with control interlock, manual operation interlock and anti-misconnection interlock, and has circuit breaker trolley drive fault alarm and reset functions, reduces human error operation and improves safety.

[0128] The control method of the circuit breaker control system in the embodiment of the present invention includes the control of the circuit breaker trolley and the propulsion mechanism 37, and the control of the circuit breaker operating mechanism 12; wherein, the control of the circuit breaker trolley and the propulsion mechanism 37 includes remote operation control (i.e., remote operation mode), local operation control (i.e., local 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 local operation control.

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

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

[0131] Under the condition that the circuit breaker operating mechanism 12 is in the open state and the circuit breaker trolley and the propulsion mechanism 37 are in the test position, the mode conversion switch is rotated to the remote position, the contact SA-1 is disconnected, and the drive module MCU 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 drive module MCU;

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

[0133] When the first baffle 25 triggers the travel switch SQ2 to act and the second baffle 34 triggers the travel switch S11 to act, the measurement and control terminal determines that the circuit breaker trolley and the propulsion mechanism 37 have reached the working position according to the action signals of the contacts S11-2 and SQ2-2, and sends a stop propulsion instruction to the drive module MCU. The drive module MCU controls the drive motor M2 to stop according to the stop propulsion instruction.

[0134] 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, when the measurement and control terminal receives the exit demand instruction issued by the host computer, it sends a first exit control instruction to the drive module MCU. 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 circuit breaker trolley and the propulsion mechanism 37 move from the working position to the test position;

[0135] When the third baffle 26 triggers the travel switch SQ3 to operate and the fourth baffle 29 triggers the travel switch S12 to operate, the measurement and control terminal determines that the circuit breaker trolley and the propulsion mechanism 37 have reached the test position according to the action signals of the contacts S12-2 and SQ3-2, and sends a stop exit instruction to the drive module MCU. The drive module MCU controls the drive motor M2 to stop according to the stop exit instruction.

[0136] Before remote control, the operator first pushes the circuit breaker trolley to the second track 31, and continues to push it along the second track 31 until the first lock column 21 falls into the lock hole 30, so that the advancement of the circuit breaker trolley is blocked, and then the second handle 4 is turned to lock the lock hook 16 on the second lock column 27, so that the circuit breaker trolley and the propulsion mechanism 37 are mutually locked in the test position; after the connector T is docked, the third baffle 26 triggers the travel switch SQ3 to act and the fourth baffle 29 triggers the travel switch S12 to act, and the measurement and control terminal determines that the circuit breaker trolley and the propulsion mechanism 37 are both in the test position, and displays on the display and control screen 1 and the host computer that the circuit breaker trolley and the propulsion mechanism 37 are both in the test position.

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

[0138] The operator pushes the circuit breaker trolley along the second track 31, and locks the circuit breaker trolley and the pushing mechanism 37 in the test position through the lock hook 16 and the second lock column 27, the first lock column 21 and the lock hole 30; after the connector T is docked, the third baffle 26 triggers the travel switch SQ3 to act, and the fourth baffle 29 triggers the travel switch S12 to act, and the display control screen 1 and the host computer display that the circuit breaker trolley and the pushing mechanism 37 are both in the test position;

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

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

[0141] When the first baffle 25 triggers the travel switch SQ2 to act and the second baffle 34 triggers the travel switch S11 to act, the measurement and control terminal determines that the circuit breaker trolley and the propulsion mechanism 37 have reached the working position according to the action signals of the contacts S11-2 and SQ2-2, and sends a stop propulsion instruction to the drive module MCU. The drive module MCU controls the drive motor M2 to stop according to the stop propulsion instruction, so that the circuit breaker trolley and the propulsion mechanism 37 are in the working position;

[0142] 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, when the measurement and control terminal receives the exit demand instruction issued by the display and control screen 1, it sends a second exit control instruction to the drive module MCU. 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 propulsion mechanism 3737 move from the working position to the test position;

[0143] When the third baffle 26 triggers the travel switch SQ3 to operate and the fourth baffle 29 triggers the travel switch S12 to operate, the measurement and control terminal determines that the circuit breaker trolley and the propulsion mechanism 37 have reached the test position according to the action signals of the contacts S12-2 and SQ3-2, and sends a stop exit instruction to the drive module MCU. 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 propulsion mechanism 37 specifically includes:

[0145] The operator pushes the circuit breaker trolley to the second track 31 and continues to push it along the second track 31 until the first lock column 21 falls into the lock hole 30, so that the advancement of the circuit breaker trolley is blocked, and then the second handle 4 is turned to lock the lock hook 16 on the second lock column 27, so that the circuit breaker trolley and the pushing mechanism 37 are mutually locked in the test position;

[0146] Determine the opening and closing state of the operating mechanism 12 according to the opening and closing indicator 1a of the operating mechanism 12, determine whether the circuit breaker trolley is in the working position according to the working position indicator 2a, and determine whether the circuit breaker trolley is in the test position according to the test position indicator 3a;

[0147] Under the condition that the circuit breaker operating mechanism 12 is in the open state and the circuit breaker trolley and the propulsion mechanism 37 are in the test position, the first handle is inserted into the operating hole 8, the fifth baffle 23 is moved, and the travel switch SQ1 is triggered by the fifth baffle 23, and the opening control circuit is turned on by closing the contact SQ1-1, and the closing control circuit is locked by the contact SQ1-2, and the drive motor M2 is locked by disconnecting the contact SQ1-4; the first handle is rotated clockwise, and the first screw 38 is driven to move through the second screw 33 and the turbine 36, and the propulsion mechanism 37 is driven to advance, so that the circuit breaker trolley and the propulsion mechanism 37 move from the test position to the working position to achieve advancement; the first handle is rotated counterclockwise, and the first screw 38 is driven to move through the second screw 33 and the turbine 36, and the propulsion mechanism 37 is driven to withdraw, so that the circuit breaker trolley and the propulsion mechanism 37 move from the working position to the test position to achieve withdrawal.

[0148] During manual operation, the working position indicator 2a and the test position indicator 3a provided on the first track 32 are used to manually determine whether the circuit breaker trolley and the propulsion mechanism 37 are in the working position or the test position.

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

[0150] Under the condition that 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 conversion switch SA is rotated to the remote position, the contacts SA-2 and SA-3 are disconnected, the contacts SA-4 and SA-5 are closed, and the drive module DL receives the remote operation mode signal; the measurement and control terminal sends the first closing control instruction to the drive module DL according to the closing demand instruction issued by the host computer; the drive module DL controls the closing coil LH to be energized according to the first closing control instruction and the remote 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, and 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 measurement and control terminal;

[0151] Under the condition that 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 conversion switch SA is rotated to the remote position, the contacts SA-2 and SA-3 are disconnected, the contacts SA-4 and SA-5 are closed, and the drive module DL receives the remote operation mode signal; the measurement and control terminal sends the first opening control instruction to the drive module DL according to the opening demand instruction issued by the upper computer; the drive module DL controls the opening coil LF to be energized according to the first opening control instruction and the remote 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, 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 measurement and control terminal.

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

[0153] Under the condition that 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 conversion switch SA is rotated to the local position, the contacts SA-2 and SA-3 are closed, the contacts SA-4 and SA-5 are disconnected, and the drive module DL receives the local operation mode signal; the measurement and control terminal sends the second closing control instruction to the drive module DL according to the closing demand instruction issued by the display and control screen 1; the drive module DL controls the closing coil LH to be energized according to the second closing control instruction and the local 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, and 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 measurement and control terminal;

[0154] Under the condition that 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 conversion switch SA is rotated to the local position, the contacts SA-2 and SA-3 are closed, the contacts SA-4 and SA-5 are disconnected, and the drive module DL receives the local operation mode signal; the measurement and control terminal sends a second opening control instruction to the drive module DL according to the opening demand instruction issued by the display and control screen 1; the drive module DL controls the opening coil LF to be energized according to the second opening control instruction and the local 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 opening state of the operating mechanism 12 is fed back to the measurement and control terminal.

[0155] What is disclosed above is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or modifications within the technical scope disclosed in the present invention, which should be covered within the protection scope of the present invention.

Claims

1. A circuit breaker control system, characterized in that: The control system comprises 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 arranged on the first track; the display and control screen is arranged on the operating panel of the circuit breaker trolley; The display control screen 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; 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: under the condition that 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; 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, 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 also used to: 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, issue a first closing control instruction to the operating mechanism drive circuit according to the 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 closed state, issue a first opening control instruction to the operating mechanism drive circuit according to the opening demand instruction issued by the host computer; The trolley driving 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; The operating mechanism drive circuit is used to: drive the operating mechanism transmission device to perform a closing action according to a first closing control instruction and a remote operation mode signal; and drive the operating mechanism transmission device to perform an opening action according to a first opening control instruction and a remote operation mode signal.

2. The circuit breaker control system according to claim 1, characterized in that: The trolley driving circuit includes a driving module MCU, a driving motor M2, the 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; the third end of the driving module MCU is connected to the fourth end of the driving module MCU through the contact TQ1-4 of the travel switch TQ1 and the driving motor M2; the seventh end of the driving module MCU is connected to the eighth end of the driving 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 driving motor M2 is arranged on an L-shaped frame and is connected to the propulsion mechanism through a motion mechanism; the travel switch TQ1 is arranged on the upper part of the bottom plate of the circuit breaker trolley and is connected to the pedal of the circuit breaker trolley; 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 also used to: determine whether the circuit breaker trolley and the propulsion mechanism are in the test position or the working position according to the feedback signals of the first position confirmation mechanism and the second position confirmation mechanism, and feed back to the display and control screen and the host computer; determine whether the operating mechanism 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 feed back to the display and control screen and the host computer; The drive module MCU is used to: control the drive motor M2 to work 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 work 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 2, 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 arranged at the bottom of the circuit breaker trolley, 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 trolley is in a working position; the travel switch S11 is arranged on a first track, the second baffle is arranged on a propulsion mechanism, and when the second baffle contacts the travel switch S11, the propulsion mechanism is in a working position; the third end of the measurement and control terminal is connected to 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 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 is in contact with 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 is in contact with 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 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 series into the branch between the drive module DL and the first contact of the relay KT1.

5. The circuit breaker control system according to claim 2, characterized in that: The trolley driving circuit also includes a travel switch SQ1, a fifth baffle, an operating hole and a first handle, wherein the operating hole is arranged 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, and the contact SQ1-4 of the travel switch SQ1 is connected in series to the branch corresponding to the contact TQ1-4 and the driving motor M2; The fifth baffle is arranged on the upper part 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, and the travel switch SQ1 is triggered through the fifth baffle, the contact SQ1-1 is closed, and the contacts SQ1-2 and SQ1-4 are disconnected; the first handle is connected to the motion mechanism through the operating hole, and the motion mechanism is driven to move by operating the first handle, thereby driving the propulsion mechanism to move, thereby realizing the manual operation of advancing or withdrawing the circuit breaker trolley.

6. The circuit breaker control system according to claim 1, characterized in that: The operating mechanism driving circuit includes a driving 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 end of the driving module DL is connected to the fourteenth end of the driving module DL through the operating mechanism energy storage module; the closing coil LH and the opening coil LF are respectively connected to the driving 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 driving 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 driving module DL through the coil of the relay KT1 One end of the first contact of the auxiliary switch FK is connected to the driving module DL through the first contact of the relay KT1, and the second contact of the relay KT1 is connected in parallel to the two 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 through the contact SA-5, and one end of the third contact of the auxiliary switch FK is also connected to the driving module DL through the contact TQ1-1 of the travel switch TQ1, and the other end of the third contact of the auxiliary switch FK is connected to the driving module DL; the contact SA-3 of the mode conversion switch SA is connected in parallel to the two ends of the contact TQ1-1, and 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 driving 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, 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 closed; 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, the first contact and the seventh contact of the auxiliary switch FK are closed, and the second contact, the third contact and the eighth contact of the auxiliary switch FK are disconnected.

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 also used for: 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, issuing a second propulsion control instruction to the trolley drive circuit according to the propulsion demand instruction issued by the display and control screen; 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, issuing a second exit control instruction to the trolley drive circuit according to the exit demand instruction issued by the display and control screen; The measurement and control terminal is also used to: 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, issue a second closing control instruction to the operating mechanism drive circuit according to the closing demand instruction issued by the display and control screen; 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, issue a second opening control instruction to the operating mechanism drive circuit according to the opening demand instruction issued by the display and control screen; The trolley drive circuit is also used 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; 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 also used to: drive the operating mechanism transmission device to perform a closing action according to the second closing control instruction and the local operation mode signal; and drive the operating mechanism transmission device to perform an 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 module, which is used to supply power to the display and control screen, the measurement and control terminal, the trolley drive circuit and the operating mechanism drive circuit; the power 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 driving 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 condition 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 driving 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 the propulsion mechanism reach the working position, the measurement and control terminal sends a stop propulsion command to the trolley drive circuit, and the trolley drive circuit controls the circuit breaker trolley and the propulsion mechanism to stop according to the stop propulsion command; 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, 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, and 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 the 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 the propulsion mechanism to stop according to the stop exit command; Wherein, the remote operation control of the operating mechanism includes: 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, 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 driving 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, and the eighth contact of the auxiliary switch FK is closed. The measurement and control terminal determines that the operating mechanism is in the closing state according to the states 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 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 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 contact and the eighth contact of the auxiliary switch FK, and displays it on the display and control screen and the host computer.

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