System for controlling intelligent electric chassis truck and electric ground switch
By designing locking circuits and electric controller circuits, connecting relays and circuit breakers in series, the problem of lack of standards and unclear design logic of electric chassis and electric ground knife wiring is solved, preventing false movements and 'five-preventing' accidents, and improving the system Safety and reliability.
Patent Information
- Application Number
- CN202422460268.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-12
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2034-10-12
AI Technical Summary
The wiring principle of existing electric chassis and electric ground knife in 10kV mid-mounted cabinet lacks unified standards, and the design logic is unclear, which leads to difficulty in checking wires and high risk of misoperation, which is easy to cause "five defenses" accidents.
A system including a locking circuit, an electric chassis controller circuit and an electric ground knife controller circuit is designed. By connecting the locking relay and the auxiliary contacts of the circuit breaker, it prevents misoperation and sets a start voltage protection to prevent the controller from misjudgment or Misacted.
It effectively prevents malfunctions and "five-prevention" accidents caused by faults or wrong instructions during operation, and improves operational safety and system reliability.
Smart Images
Figure CN222261770U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of power grid equipment, and in particular to a system for controlling an intelligent electric chassis vehicle and an electric ground knife. Background Art
[0002] The application of electric chassis and electric ground switches in 10kV central cabinets has a history of more than ten years. They have been widely used in various regions and substations. However, there is no unified standard for the wiring principle, and there are design defects of varying degrees. In the early days, the design institute directly connected the phase locking contacts in series with the controller input circuit according to the five-protection requirements of the switch cabinet, which had the disadvantages of unclear design logic and difficult line tracing.
[0003] In view of the current situation, a system for controlling intelligent electric chassis and electric ground cutters has been designed through the comprehensive design of control principles of electric chassis and electric ground cutters in hundreds of substations over the past decade to prevent the electric chassis and electric ground cutters from malfunctioning due to various reasons during operation and causing "five prevention" accidents. Utility Model Content
[0004] The utility model aims to provide a system for controlling an intelligent electric chassis vehicle and an electric ground knife, so as to prevent the electric chassis and the electric ground knife from malfunctioning due to various reasons during operation, thereby causing "five prevention" accidents.
[0005] The utility model provides a system for controlling an intelligent electric chassis vehicle and an electric ground knife, comprising three electrical circuits, namely a locking circuit, an electric chassis controller circuit, and an electric ground knife controller circuit;
[0006] The devices and contacts involved in the locking circuit include positive control busbar power supply KM+, negative control busbar power supply KM-, air switch 1DK, live display 1GSN, front middle door interlocking travel switch MK, rear door interlocking travel switch YK, HM chassis trolley manual operation valve travel switch, QE grounding knife manual operation valve travel switch, circuit breaker test position contact S8, circuit breaker QF split auxiliary contact, 01G grounding switch split auxiliary contact, electric chassis locking relay BSJ1, electric grounding knife locking relay BJS2;
[0007] The components and contacts involved in the electric chassis controller circuit include a positive-operated small bus power supply CM+, a negative-operated small bus power supply CM-, an air switch 5K, an electric chassis controller 2n, an electric chassis locking relay BSJ1 contact, a circuit breaker QF split auxiliary contact, an electric chassis motor, a 2QK local remote operation switch, a circuit breaker working position contact S9, a circuit breaker test position contact S8, an electric chassis local closing button 1HA, a local opening button 1TA, a remote operation permission connection 1LP5, a microcomputer protection device 1n, and a microcomputer five-protection lock 2WF;
[0008] The components and contacts of the electric earthing knife controller circuit include a positive-operated small bus power supply CM+, a negative-operated small bus power supply CM-, an air switch 6K, an electric earthing knife controller 3n, an electric earthing knife locking relay BSJ2 contact, a circuit breaker test position contact S8, an electric earthing knife motor, a 2QK local remote-operated switching switch, an electric earthing knife local closing button 2HA, a local opening button 2TA, a remote-operated permission connection 1LP6, a microcomputer protection device 1n, and a microcomputer five-protection lock 3WF.
[0009] Preferably, the operating power supply of the electric chassis vehicle and the electric grounding switch is a DC power supply, and the control circuits of the electric chassis controller 2n and the electric grounding switch controller 3n are connected to the CM+ and CM- DC locking circuits.
[0010] Preferably, when the current middle door is closed, the front middle door interlocking stroke switch MK is closed, the cable room door is closed, the rear door interlocking stroke switch YK is closed, the grounding switch is in the open state, the 01G grounding switch split auxiliary contact is closed, the circuit breaker splitting QF split auxiliary contact is closed, the circuit breaker chassis manual operation valve is closed, the HM chassis trolley manual operation valve stroke switch is closed, and the electric chassis locking relay BSJ1 is energized and closed, and the electric chassis locking relay BSJ1 normally open contact is connected to the electric chassis controller operation interlocking contact, and the electric chassis is allowed to operate; when the current middle door is closed, the front middle door interlocking stroke switch MK is closed, the cable room door is closed, the rear door interlocking stroke switch YK is closed, the live indicator 1GSN of the grounding switch position is out of power, its locking point is closed, the circuit breaker is in the test position, that is, the circuit breaker test position contact S8 is closed, and the QE grounding knife manual operation valve stroke switch is closed, the BSJ2 relay is energized, Connect the normally open contact of BSJ2 to the operation interlock contact of the electric ground knife controller, and the electric ground knife is allowed to operate.
[0011] Preferably, when the locking circuit meets the electric chassis operation conditions and the electric chassis locking relay BSJ1 is energized, its normally open contacts are connected to the 9th, 10th and 11th pins of the electric chassis controller 2n for interlocking. When the 2n electric chassis controller interlocking input circuit obtains a high level, the electric chassis controller allows operation; at this time, the 2QK local and remote operation conversion switch is turned to the local operation direction, the 3rd and 4th pins of the 2QK local and remote operation conversion switch are connected, and the 2WF microcomputer five-protection lock is inserted, and the electric chassis can be rocked in or out; when the 2QK local and remote operation conversion switch is turned to the remote operation direction, the 11th and 12th pins of the 2QK local and remote operation conversion switch are connected, and the remote operation permission connecting piece 1LP5 is connected, the electric chassis can be remotely operated through the microcomputer protection device 1n in the background, and the local operation is invalid at this time.
[0012] Here, the normally open contact of the electric chassis locking relay BSJ1 is connected in series in the motor output circuit of the electric chassis controller 2n, which can prevent the electric chassis from malfunctioning due to the output of erroneous instructions due to an internal fault of the electric chassis controller 2n when the control operation conditions are not met. The motor output circuit of the electric chassis controller 2n is connected in series with the auxiliary contact of the circuit breaker QF split position, which can prevent the electric chassis from operating due to erroneous instructions issued by the controller due to an internal fault when the circuit breaker is closed, thereby causing an accident of load isolation.
[0013] Preferably, when the locking circuit meets the operating conditions of the electric earth knife and BSJ2 is energized, its normally open point is connected to the interlocking input circuit of the 11th pin of the electric earth knife controller 3n. When the interlocking input circuit of the 3n electric earth knife controller is at a high level, the electric earth knife controller allows operation; at this time, the 2QK local and remote operation conversion switch is turned to the local operation direction, the 5th and 6th pins of the 2QK local and remote operation conversion switch are connected, and the 3WF microcomputer five-protection lock is inserted, and the electric earth knife can be opened and closed; when the 2QK local and remote operation conversion switch is turned to the remote operation direction, the 13th and 14th pins of the 2QK local and remote operation conversion switch are connected, and the remote operation permission connecting piece 1LP6 is connected, the electric earth knife can be remotely operated through the microcomputer protection device 1n in the background, and the local operation is invalid at this time.
[0014] Here, the normally open contact of the electric ground knife locking relay BJS2 is connected in series in the motor circuit of the electric ground knife controller 3n, which can prevent the electric ground knife from malfunctioning due to the output of erroneous instructions due to an internal fault of the electric ground knife controller 3n when the control operation conditions are not met. The circuit breaker test position contact S8 is connected in series in the motor circuit of the electric ground knife controller 3n, which can prevent the electric ground knife from being actuated due to an internal fault of the electric ground knife controller 3n when the circuit breaker is in the working position, thereby causing the ground knife to be energized.
[0015] Preferably, the starting voltage of the electric chassis controller 2n and the electric ground knife controller 3n is set so that when the operating power supply is DC220V, the controller will not start if it is lower than 143V. This can effectively prevent the high level generated by the induced voltage in 9, 10, 11, 12, 13, 14, and 15 of the controller, thereby causing accidents such as misjudgment or malfunction of the controller.
[0016] Preferably, the starting voltage of the electric chassis controller 2n and the electric ground knife controller 3n is set so that when the operating power supply is DC110V, the controller will not operate if the voltage is lower than 70V. This can effectively prevent the high level generated by the induced voltage at 9, 10, 11, 12, 13, 14, and 15 of the controller, thereby causing accidents such as misjudgment or malfunction of the controller.
[0017] Through the above scheme, it is known that the utility model is a system for controlling an intelligent electric chassis vehicle and an electric ground knife. By connecting the normally open contact of the electric chassis locking relay BSJ1 in series with the motor output circuit of the electric chassis controller 2n, it can prevent the electric chassis from malfunctioning due to the output of an erroneous instruction due to an internal fault of the electric chassis controller 2n when the control operation conditions are not met. The motor output circuit of the electric chassis controller 2n is connected in series with the auxiliary contact of the circuit breaker QF split position, which can prevent the circuit breaker from issuing an erroneous instruction due to an internal fault of the controller when closing the circuit breaker, causing the electric chassis to operate, thereby causing an accident of load isolation. The motor circuit of the ground knife controller 3n is connected in series with the normally open contact of the electric ground knife locking relay BJS2, which can prevent the electric ground knife from malfunctioning due to the internal fault of the electric ground knife controller 3n when the control operation conditions are not met. The motor circuit of the electric ground knife controller 3n is connected in series with the circuit breaker test position contact S8, which can prevent the electric ground knife from operating due to the internal fault of the electric ground knife controller 3n when the circuit breaker is in the working position. The electric ground knife is caused to close the ground knife with power, which can effectively prevent the electric chassis and the electric ground knife from malfunctioning due to various reasons during the operation process, thereby causing the "five prevention" accidents. With the continuous improvement of the digitalization and standardization of the power grid, this perfect control principle will be continuously recognized, adopted and promoted by various power supply bureaus to achieve standardization. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the technical solution of the present invention, the following is a brief introduction to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0019] Figure 1 This is a schematic diagram of a locking device circuit for a system for controlling an intelligent electric chassis vehicle and an electric ground knife according to the utility model;
[0020] Figure 2 It is a schematic diagram of an electric chassis controller 2n of a system for controlling an intelligent electric chassis vehicle and an electric ground knife according to the utility model;
[0021] Figure 3 The utility model is a schematic diagram of an electric ground knife controller 3n for controlling an intelligent electric chassis vehicle and an electric ground knife system. DETAILED DESCRIPTION
[0022] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.
[0023] Example 1
[0024] See also Figure 1 — Figure 3 A system for controlling an intelligent electric chassis vehicle and an electric ground knife shown in the figure includes three electrical circuits, namely a locking circuit, an electric chassis controller circuit, and an electric ground knife controller circuit;
[0025] The devices and contacts involved in the locking circuit include positive control busbar power supply KM+, negative control busbar power supply KM-, air switch 1DK, live display 1GSN, front middle door interlocking travel switch MK, rear door interlocking travel switch YK, HM chassis trolley manual operation valve travel switch, QE grounding knife manual operation valve travel switch, circuit breaker test position contact S8, circuit breaker QF split auxiliary contact, 01G grounding switch split auxiliary contact, electric chassis locking relay BSJ1, electric grounding knife locking relay BJS2;
[0026] The components and contacts involved in the electric chassis controller circuit include a positive-operated small bus power supply CM+, a negative-operated small bus power supply CM-, an air switch 5K, an electric chassis controller 2n, an electric chassis locking relay BSJ1 contact, a circuit breaker QF split auxiliary contact, an electric chassis motor, a 2QK local remote operation switch, a circuit breaker working position contact S9, a circuit breaker test position contact S8, an electric chassis local closing button 1HA, a local opening button 1TA, a remote operation permission connection 1LP5, a microcomputer protection device 1n, and a microcomputer five-protection lock 2WF;
[0027] The components and contacts of the electric earthing knife controller circuit include a positive-operated small bus power supply CM+, a negative-operated small bus power supply CM-, an air switch 6K, an electric earthing knife controller 3n, an electric earthing knife locking relay BSJ2 contact, a circuit breaker test position contact S8, an electric earthing knife motor, a 2QK local remote-operated switching switch, an electric earthing knife local closing button 2HA, a local opening button 2TA, a remote-operated permission connection 1LP6, a microcomputer protection device 1n, and a microcomputer five-protection lock 3WF.
[0028] The operating power supply of the electric chassis vehicle and the electric grounding switch is a DC power supply, and the control circuits of the electric chassis controller 2n and the electric grounding switch controller 3n are connected to the CM+ and CM- DC locking circuits.
[0029] The current middle door is closed, the front middle door interlocking stroke switch MK is closed, the cable room door is closed, the rear door interlocking stroke switch YK is closed, the grounding switch is in the open state, the 01G grounding switch split auxiliary contact is closed, the circuit breaker split QF split auxiliary contact is closed, the circuit breaker chassis manual operation valve is closed, the HM chassis trolley manual operation valve stroke switch is closed, and the electric chassis locking relay BSJ1 is energized and closed. The normally open contact of the electric chassis locking relay BSJ1 is connected to the electric chassis controller operation interlocking contact. At this time, the electric chassis allows operation; the current middle door is closed, the front middle door interlocking stroke switch MK is closed, the cable room door is closed, the rear door interlocking stroke switch YK is closed, the live display 1GSN of the grounding switch position is out of power, its locking point is closed, the circuit breaker is in the test position, that is, the circuit breaker test position contact S8 is closed, and the QE grounding knife manual operation valve stroke switch is closed, the BSJ2 relay is energized, Connect the normally open contact of BSJ2 to the operation interlock contact of the electric ground knife controller, and the electric ground knife is allowed to operate.
[0030] The starting voltage of the electric chassis controller 2n and the electric ground knife controller 3n is set so that when the operating power supply is DC220V, the controller will not start if it is lower than 143V. This can effectively prevent the high level generated by the induced voltage at 9, 10, 11, 12, 13, 14, and 15 of the controller, thereby causing the accident of misjudgment or malfunction of the controller.
[0031] The starting voltage of the electric chassis controller 2n and the electric ground knife controller 3n is set so that when the operating power supply is DC110V, the controller will not operate if the voltage is lower than 70V. This can effectively prevent the high level generated by the induced voltage at 9, 10, 11, 12, 13, 14, and 15 of the controller, thereby causing the accident of misjudgment or malfunction of the controller.
[0032] Example 2
[0033] See also Figure 1 — Figure 3A system for controlling an intelligent electric chassis vehicle and an electric ground knife shown in the figure includes three electrical circuits, namely a locking circuit, an electric chassis controller circuit, and an electric ground knife controller circuit;
[0034] The devices and contacts involved in the locking circuit include positive control busbar power supply KM+, negative control busbar power supply KM-, air switch 1DK, live display 1GSN, front middle door interlocking travel switch MK, rear door interlocking travel switch YK, HM chassis trolley manual operation valve travel switch, QE grounding knife manual operation valve travel switch, circuit breaker test position contact S8, circuit breaker QF split auxiliary contact, 01G grounding switch split auxiliary contact, electric chassis locking relay BSJ1, electric grounding knife locking relay BJS2;
[0035] The components and contacts involved in the electric chassis controller circuit include a positive-operated small bus power supply CM+, a negative-operated small bus power supply CM-, an air switch 5K, an electric chassis controller 2n, an electric chassis locking relay BSJ1 contact, a circuit breaker QF split auxiliary contact, an electric chassis motor, a 2QK local remote operation switch, a circuit breaker working position contact S9, a circuit breaker test position contact S8, an electric chassis local closing button 1HA, a local opening button 1TA, a remote operation permission connection 1LP5, a microcomputer protection device 1n, and a microcomputer five-protection lock 2WF;
[0036] The components and contacts of the electric earthing knife controller circuit include a positive-operated small bus power supply CM+, a negative-operated small bus power supply CM-, an air switch 6K, an electric earthing knife controller 3n, an electric earthing knife locking relay BSJ2 contact, a circuit breaker test position contact S8, an electric earthing knife motor, a 2QK local remote-operated switching switch, an electric earthing knife local closing button 2HA, a local opening button 2TA, a remote-operated permission connection 1LP6, a microcomputer protection device 1n, and a microcomputer five-protection lock 3WF.
[0037] The operating power supply of the electric chassis vehicle and the electric grounding switch is a DC power supply, and the control circuits of the electric chassis controller 2n and the electric grounding switch controller 3n are connected to the CM+ and CM- DC locking circuits.
[0038] The current middle door is closed, the front middle door interlocking stroke switch MK is closed, the cable room door is closed, the rear door interlocking stroke switch YK is closed, the grounding switch is in the open state, the 01G grounding switch split auxiliary contact is closed, the circuit breaker split QF split auxiliary contact is closed, the circuit breaker chassis manual operation valve is closed, the HM chassis trolley manual operation valve stroke switch is closed, and the electric chassis locking relay BSJ1 is energized and closed. The normally open contact of the electric chassis locking relay BSJ1 is connected to the electric chassis controller operation interlocking contact. At this time, the electric chassis allows operation; the current middle door is closed, the front middle door interlocking stroke switch MK is closed, the cable room door is closed, the rear door interlocking stroke switch YK is closed, the live display 1GSN of the grounding switch position is out of power, its locking point is closed, the circuit breaker is in the test position, that is, the circuit breaker test position contact S8 is closed, and the QE grounding knife manual operation valve stroke switch is closed, the BSJ2 relay is energized, Connect the normally open contact of BSJ2 to the operation interlock contact of the electric ground knife controller, and the electric ground knife is allowed to operate.
[0039] When the locking circuit meets the electric chassis operation conditions and the electric chassis locking relay BSJ1 is energized, its normally open contacts are connected to the interlocking inputs of the 9th, 10th and 11th pins of the electric chassis controller 2n. When the interlocking input circuit of the 2n electric chassis controller is high, the electric chassis controller allows operation; at this time, turn the 2QK local and remote operation conversion switch to the local operation direction, connect the 3rd and 4th pins of the 2QK local and remote operation conversion switch, insert the 2WF microcomputer five-protection lock, and the electric chassis can be rocked in or out; turn the 2QK local and remote operation conversion switch to the remote operation direction, connect the 11th and 12th pins of the 2QK local and remote operation conversion switch, and when the remote operation permission link 1LP5 is connected, the electric chassis can be remotely operated in the background through the microcomputer protection device 1n, and the local operation is invalid at this time.
[0040] Here, the normally open contact of the electric chassis locking relay BSJ1 is connected in series in the motor output circuit of the electric chassis controller 2n, which can prevent the electric chassis from malfunctioning due to the output of erroneous instructions due to an internal fault of the electric chassis controller 2n when the control operation conditions are not met. The motor output circuit of the electric chassis controller 2n is connected in series with the auxiliary contact of the circuit breaker QF split position, which can prevent the circuit breaker from issuing erroneous instructions due to an internal fault of the controller when closing, causing the electric chassis to operate, thereby causing an accident of load isolation.
[0041] The starting voltage of the electric chassis controller 2n and the electric ground knife controller 3n is set so that when the operating power supply is DC220V, the controller will not start if it is lower than 143V. This can effectively prevent the high level generated by the induced voltage at 9, 10, 11, 12, 13, 14, and 15 of the controller, thereby causing the accident of misjudgment or malfunction of the controller.
[0042] The starting voltage of the electric chassis controller 2n and the electric ground knife controller 3n is set so that when the operating power supply is DC110V, the controller will not operate if the voltage is lower than 70V. This can effectively prevent the high level generated by the induced voltage at 9, 10, 11, 12, 13, 14, and 15 of the controller, thereby causing the accident of misjudgment or malfunction of the controller.
[0043] Example 3
[0044] See also Figure 1 — Figure 3 A system for controlling an intelligent electric chassis vehicle and an electric ground knife shown in the figure includes three electrical circuits, namely a locking circuit, an electric chassis controller circuit, and an electric ground knife controller circuit;
[0045] The devices and contacts involved in the locking circuit include positive control busbar power supply KM+, negative control busbar power supply KM-, air switch 1DK, live display 1GSN, front middle door interlocking travel switch MK, rear door interlocking travel switch YK, HM chassis trolley manual operation valve travel switch, QE grounding knife manual operation valve travel switch, circuit breaker test position contact S8, circuit breaker QF split auxiliary contact, 01G grounding switch split auxiliary contact, electric chassis locking relay BSJ1, electric grounding knife locking relay BJS2;
[0046] The components and contacts involved in the electric chassis controller circuit include a positive-operated small bus power supply CM+, a negative-operated small bus power supply CM-, an air switch 5K, an electric chassis controller 2n, an electric chassis locking relay BSJ1 contact, a circuit breaker QF split auxiliary contact, an electric chassis motor, a 2QK local remote operation switch, a circuit breaker working position contact S9, a circuit breaker test position contact S8, an electric chassis local closing button 1HA, a local opening button 1TA, a remote operation permission connection 1LP5, a microcomputer protection device 1n, and a microcomputer five-protection lock 2WF;
[0047] The components and contacts of the electric earthing knife controller circuit include a positive-operated small bus power supply CM+, a negative-operated small bus power supply CM-, an air switch 6K, an electric earthing knife controller 3n, an electric earthing knife locking relay BSJ2 contact, a circuit breaker test position contact S8, an electric earthing knife motor, a 2QK local remote-operated switching switch, an electric earthing knife local closing button 2HA, a local opening button 2TA, a remote-operated permission connection 1LP6, a microcomputer protection device 1n, and a microcomputer five-protection lock 3WF.
[0048] The operating power supply of the electric chassis vehicle and the electric grounding switch is a DC power supply, and the control circuits of the electric chassis controller 2n and the electric grounding switch controller 3n are connected to the CM+ and CM- DC locking circuits.
[0049] The current middle door is closed, the front middle door interlocking stroke switch MK is closed, the cable room door is closed, the rear door interlocking stroke switch YK is closed, the grounding switch is in the open state, the 01G grounding switch split auxiliary contact is closed, the circuit breaker split QF split auxiliary contact is closed, the circuit breaker chassis manual operation valve is closed, the HM chassis trolley manual operation valve stroke switch is closed, and the electric chassis locking relay BSJ1 is energized and closed. The normally open contact of the electric chassis locking relay BSJ1 is connected to the electric chassis controller operation interlocking contact. At this time, the electric chassis allows operation; the current middle door is closed, the front middle door interlocking stroke switch MK is closed, the cable room door is closed, the rear door interlocking stroke switch YK is closed, the live display 1GSN of the grounding switch position is out of power, its locking point is closed, the circuit breaker is in the test position, that is, the circuit breaker test position contact S8 is closed, and the QE grounding knife manual operation valve stroke switch is closed, the BSJ2 relay is energized, Connect the normally open contact of BSJ2 to the operation interlock contact of the electric ground knife controller, and the electric ground knife is allowed to operate.
[0050] When the locking circuit meets the electric chassis operation conditions and the electric chassis locking relay BSJ1 is energized, its normally open contacts are connected to the interlocking inputs of the 9th, 10th and 11th pins of the electric chassis controller 2n. When the interlocking input circuit of the 2n electric chassis controller is high, the electric chassis controller allows operation; at this time, turn the 2QK local and remote operation conversion switch to the local operation direction, connect the 3rd and 4th pins of the 2QK local and remote operation conversion switch, insert the 2WF microcomputer five-protection lock, and the electric chassis can be rocked in or out; turn the 2QK local and remote operation conversion switch to the remote operation direction, connect the 11th and 12th pins of the 2QK local and remote operation conversion switch, and when the remote operation permission link 1LP5 is connected, the electric chassis can be remotely operated through the microcomputer protection device 1n in the background, and the local operation is invalid at this time.
[0051] Here, the normally open contact of the electric chassis locking relay BSJ1 is connected in series in the motor output circuit of the electric chassis controller 2n, which can prevent the electric chassis from malfunctioning due to the output of erroneous instructions due to an internal fault of the electric chassis controller 2n when the control operation conditions are not met. The motor output circuit of the electric chassis controller 2n is connected in series with the auxiliary contact of the circuit breaker QF split position, which can prevent the circuit breaker from issuing erroneous instructions due to an internal fault of the controller when closing, causing the electric chassis to operate, thereby causing an accident of load isolation.
[0052] When the locking circuit meets the electric earth knife operation conditions and BSJ2 is energized, its normally open point is connected to the interlocking input circuit of the 11th pin of the electric earth knife controller 3n. When the interlocking input circuit of the 3n electric earth knife controller is at a high level, the electric earth knife controller allows operation; at this time, turn the 2QK local and remote operation conversion switch to the local operation direction, connect the 5th and 6th pins of the 2QK local and remote operation conversion switch, insert the 3WF microcomputer five-protection lock, and the electric earth knife can be opened and closed; turn the 2QK local and remote operation conversion switch to the remote operation direction, connect the 13th and 14th pins of the 2QK local and remote operation conversion switch, and when the remote operation permission link 1LP6 is connected, the electric earth knife can be remotely operated through the microcomputer protection device 1n in the background, and the local operation is invalid at this time.
[0053] Here, the normally open contact of the electric ground knife locking relay BJS2 is connected in series in the motor circuit of the electric ground knife controller 3n, which can prevent the electric ground knife from malfunctioning due to the output of erroneous instructions due to an internal fault of the electric ground knife controller 3n when the control operation conditions are not met. The circuit breaker test position contact S8 is connected in series in the motor circuit of the electric ground knife controller 3n, which can prevent the electric ground knife from being actuated due to an internal fault of the electric ground knife controller 3n when the circuit breaker is in the working position, thereby causing the ground knife to be energized.
[0054] The starting voltage of the electric chassis controller 2n and the electric ground knife controller 3n is set so that when the operating power supply is DC220V, the controller will not start if it is lower than 143V. This can effectively prevent the high level generated by the induced voltage at 9, 10, 11, 12, 13, 14, and 15 of the controller, thereby causing the accident of misjudgment or malfunction of the controller.
[0055] The starting voltage of the electric chassis controller 2n and the electric ground knife controller 3n is set so that when the operating power supply is DC110V, the controller will not operate if the voltage is lower than 70V. This can effectively prevent the high level generated by the induced voltage at 9, 10, 11, 12, 13, 14, and 15 of the controller, thereby causing the accident of misjudgment or malfunction of the controller.
[0056] The specific embodiments described above further illustrate the technical problems, technical solutions and beneficial effects solved by the present invention. It should be understood that the above are only specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A system for controlling an intelligent electric chassis vehicle and an electric ground cutter, characterized in that: It includes three electrical circuits, namely the locking circuit, the electric chassis controller circuit, and the electric ground knife controller circuit; The devices and contacts involved in the locking circuit include positive control busbar power supply KM+, negative control busbar power supply KM-, air switch 1DK, live display 1GSN, front middle door interlocking travel switch MK, rear door interlocking travel switch YK, HM chassis trolley manual operation valve travel switch, QE grounding knife manual operation valve travel switch, circuit breaker test position contact S8, circuit breaker QF split auxiliary contact, 01G grounding switch split auxiliary contact, electric chassis locking relay BSJ1, electric grounding knife locking relay BJS2; The components and contacts involved in the electric chassis controller circuit include a positive-operated small bus power supply CM+, a negative-operated small bus power supply CM-, an air switch 5K, an electric chassis controller 2n, an electric chassis locking relay BSJ1 contact, a circuit breaker QF split auxiliary contact, an electric chassis motor, a 2QK local remote operation switch, a circuit breaker working position contact S9, a circuit breaker test position contact S8, an electric chassis local closing button 1HA, a local opening button 1TA, a remote operation permission connection 1LP5, a microcomputer protection device 1n, and a microcomputer five-protection lock 2WF; The components and contacts of the electric earthing knife controller circuit include a positive-operated small bus power supply CM+, a negative-operated small bus power supply CM-, an air switch 6K, an electric earthing knife controller 3n, an electric earthing knife locking relay BSJ2 contact, a circuit breaker test position contact S8, an electric earthing knife motor, a 2QK local remote-operated switching switch, an electric earthing knife local closing button 2HA, a local opening button 2TA, a remote-operated permission connection 1LP6, a microcomputer protection device 1n, and a microcomputer five-protection lock 3WF.
2. A system for controlling an intelligent electric chassis vehicle and an electric ground cutter according to claim 1, characterized in that: The operating power supply of the electric chassis vehicle and the electric grounding switch is a DC power supply, and the control circuits of the electric chassis controller 2n and the electric grounding switch controller 3n are connected to the CM+ and CM- DC locking circuits.
3. A system for controlling an intelligent electric chassis vehicle and an electric ground cutter according to claim 1, characterized in that: The current middle door is closed, the front middle door interlocking stroke switch MK is closed, the cable room door is closed, the rear door interlocking stroke switch YK is closed, the grounding switch is in the open state, the 01G grounding switch split auxiliary contact is closed, the circuit breaker split QF split auxiliary contact is closed, the circuit breaker chassis manual operation valve is closed, the HM chassis trolley manual operation valve stroke switch is closed, and the electric chassis locking relay BSJ1 is energized and closed. The normally open contact of the electric chassis locking relay BSJ1 is connected to the electric chassis controller operation interlocking contact. At this time, the electric chassis allows operation; the current middle door is closed, the front middle door interlocking stroke switch MK is closed, the cable room door is closed, the rear door interlocking stroke switch YK is closed, the live display 1GSN of the grounding switch position is out of power, its locking point is closed, the circuit breaker is in the test position, that is, the circuit breaker test position contact S8 is closed, and the QE grounding knife manual operation valve stroke switch is closed, the BSJ2 relay is energized, Connect the normally open contact of BSJ2 to the operation interlock contact of the electric ground knife controller, and the electric ground knife is allowed to operate.
4. A system for controlling an intelligent electric chassis vehicle and an electric ground cutter according to claim 1, characterized in that: When the locking circuit meets the electric chassis operation conditions and the electric chassis locking relay BSJ1 is energized, its normally open contacts are connected to the interlocking inputs of the 9th, 10th and 11th pins of the electric chassis controller 2n. When the interlocking input circuit of the 2n electric chassis controller is high, the electric chassis controller allows operation; at this time, turn the 2QK local and remote operation conversion switch to the local operation direction, connect the 3rd and 4th pins of the 2QK local and remote operation conversion switch, insert the 2WF microcomputer five-protection lock, and the electric chassis can be rocked in or out; turn the 2QK local and remote operation conversion switch to the remote operation direction, connect the 11th and 12th pins of the 2QK local and remote operation conversion switch, and when the remote operation permission link 1LP5 is connected, the electric chassis can be remotely operated through the microcomputer protection device 1n in the background, and the local operation is invalid at this time.
5. A system for controlling an intelligent electric chassis vehicle and an electric ground cutter according to claim 1, characterized in that: When the locking circuit meets the electric earth knife operation condition BSJ2 is energized, its normally open point is connected to the interlocking input circuit of the 11th pin of the electric earth knife controller 3n. When the interlocking input circuit of the 3n electric earth knife controller is at a high level, the electric earth knife controller allows operation; at this time, turn the 2QK local and remote operation conversion switch to the local operation direction, connect the 5th and 6th pins of the 2QK local and remote operation conversion switch, insert the 3WF microcomputer five-protection lock, and the electric earth knife can be opened and closed; turn the 2QK local and remote operation conversion switch to the remote operation direction, connect the 13th and 14th pins of the 2QK local and remote operation conversion switch, and when the remote operation permission link 1LP6 is connected, the electric earth knife can be remotely operated through the microcomputer protection device 1n in the background, and the local operation is invalid at this time.
6. A system for controlling an intelligent electric chassis vehicle and an electric ground cutter according to claim 1, characterized in that: The starting voltage of the electric chassis controller 2n and the electric ground knife controller 3n is set so that when the operating power supply is DC220V, the controller will not start if it is lower than 143V.
7. A system for controlling an intelligent electric chassis vehicle and an electric ground cutter according to claim 1, characterized in that: The starting voltage of the electric chassis controller 2n and the electric ground knife controller 3n is set so that when the operating power supply is DC110V, the controller will not operate if it is lower than 70V.