A locking control system for busbar switchgear trolley and busbar isolation trolley

Abstract

The present invention discloses a locking control system for a busbar switchgear trolley and a busbar isolation trolley. The system uses a first locking device sensing element to control an actuator of the first locking device to lock the trolley crank operating handle of the busbar switchgear trolley when the busbar isolation trolley is in a non-working position, and unlock it otherwise. The system uses a second locking device sensing element to control an actuator of the second locking device to lock the trolley crank operating handle of the busbar isolation trolley when the busbar switchgear trolley is in a working position, and unlock it otherwise. This system ensures that the busbar isolation trolley can only be moved from the working position to the test position when the busbar switchgear trolley is in a test position, and that the busbar isolation trolley can only be moved from the test position to the working position when the busbar isolation trolley is in a working position. This system achieves interlocking of the moving positions between the busbar switchgear trolley and the busbar isolation trolley, and avoids operational accidents caused by operator misoperation.

Description

Technical Field

[0001] The present invention relates to the technical field of safe operation of high-voltage switch cabinets, and in particular to a locking control system for a busbar switch cabinet trolley and a busbar isolation cabinet trolley. Background Art

[0002] In the power system, in order to ensure the safe operation of the power grid, the switch cabinet must be equipped with a complete and reliable interlocking device to ensure the correctness of the equipment operation procedure itself and personal safety, and prevent the occurrence of misoperation accidents.

[0003] Current high-voltage switchgear typically uses electrical interlocking, or a combination of mechanical and electrical interlocking, between switchgear panels to achieve the switchgear's "five-protection" interlocking function. However, due to complex operation and high failure rates, some interlocks are removed, others are improperly used and maintained, and some have incomplete functional design and unreliable interlocking devices, all of which can lead to safety hazards during the switching operation and operation of the switchgear.

[0004] To isolate two high-voltage busbar sections, both trolley-type and knife-type switchgear require a busbar coupler switchgear and a busbar coupler isolation cabinet. These cabinets serve two purposes: first, to facilitate maintenance. If one busbar section is under maintenance while the other is in operation, without an isolation cabinet, either the upper or lower contacts inside the busbar coupler will be energized, preventing thorough maintenance. Second, to facilitate busbar reversal, if both busbar sections are connected to a single busbar coupler, the busbar may not fit properly if the busbar cross-section is large, requiring an isolation cabinet. Trolley-type switchgear lacks a dedicated arc-extinguishing device and cannot be used to connect or disconnect load current. Therefore, when moving the busbar coupler isolation cabinet trolley between the test and operating positions, the busbar coupler trolley must be in the test position. This means that to prevent operational accidents caused by pulling out the trolley cabinet while under load, the busbar coupler isolation cabinet trolley cannot be moved between the test and operating positions while the busbar coupler trolley is in the operating position.

[0005] However, when staff lack experience and operate improperly, they may mistakenly operate the busbar switch cabinet trolley and the busbar isolation cabinet trolley, causing safety accidents. Summary of the Invention

[0006] The purpose of the present invention is to provide a locking control system for a busbar switch cabinet trolley and a busbar isolation cabinet trolley, which is used to achieve interlocking of the moving positions between the busbar switch cabinet trolley and the busbar isolation cabinet trolley to avoid operational accidents caused by staff misoperation.

[0007] In order to solve the above technical problems, the present invention provides a locking control system for a busbar switchgear trolley and a busbar isolation trolley, comprising: a first locking device and a second locking device;

[0008] Wherein, the sensing element of the first locking device is provided on the bus-couple isolation cabinet trolley, and the actuator of the first locking device is provided on the bus-couple switch cabinet trolley; when the bus-couple isolation cabinet trolley is in the non-working position, the sensing element of the first locking device controls the actuator of the first locking device to lock the trolley crank operating handle of the bus-couple switch cabinet trolley; when the bus-couple isolation cabinet trolley is in the working position, the sensing element of the first locking device controls the actuator of the first locking device to unlock the trolley crank operating handle of the bus-couple switch cabinet trolley;

[0009] The sensing component of the second locking device is provided on the bus coupler switch cabinet trolley, and the executive component of the second locking device is provided on the bus coupler isolation cabinet trolley; when the bus coupler switch cabinet is in the working position, the sensing component of the second locking device controls the executive component of the second locking device to lock the movement of the trolley crank operating handle of the bus coupler isolation cabinet trolley; when the bus coupler switch cabinet trolley is in the test position, the sensing component of the second locking device controls the executive component of the second locking device to unlock the trolley crank operating handle of the bus coupler isolation cabinet trolley.

[0010] Optionally, the sensing element of the first locking device and the sensing element of the second locking device are both specifically travel switches.

[0011] Optionally, the sensing element of the first locking device is specifically provided at the chassis position of the bus-coupled isolation cabinet trolley, so that when the bus-coupled isolation cabinet trolley reaches the working position, the sensing element of the first locking device touches the metal baffle at the working position of the bus-coupled isolation cabinet trolley, so that the contacts inside the sensing element of the first locking device are closed;

[0012] The sensing component of the second locking device is specifically arranged at the chassis position of the main switch cabinet trolley, so that when the main switch cabinet trolley reaches the test position, the sensing component of the second locking device touches the metal baffle at the working position of the main switch cabinet trolley, so that the contacts inside the sensing component of the second locking device are closed.

[0013] Optionally, the actuator of the first locking device and the actuator of the second locking device are both electromagnets.

[0014] Optionally, the actuator of the first locking device is specifically provided at the chassis position of the bus tie switch cabinet trolley. When the sensing member of the first locking device loses power, the actuator of the first locking device abuts against the clamping strip under the chassis of the bus tie switch cabinet trolley to lock the trolley crank operating handle of the bus tie switch cabinet trolley. When the sensing member of the first locking device is energized, the actuator of the first locking device is released to unlock the trolley crank operating handle of the bus tie switch cabinet trolley, so as to move the bus tie switch cabinet trolley from the test position to the working position.

[0015] The actuator of the second locking device is specifically arranged at the chassis position of the main bus isolation cabinet trolley. When the sensing component of the second locking device loses power, the actuator of the second locking device presses against the card bar under the chassis of the main bus isolation cabinet trolley to lock the trolley crank operating handle of the main bus isolation cabinet trolley; when the sensing component of the second locking device is energized, the actuator of the second locking device is released to unlock the trolley crank operating handle of the main bus isolation cabinet trolley, so as to move the main bus isolation cabinet trolley from the working position to the test position.

[0016] Optionally, it also includes a first emergency unlocking device provided on the actuator of the first locking device for unlocking the actuator of the first locking device, and a second emergency unlocking device provided on the actuator of the second locking device for unlocking the actuator of the second locking device.

[0017] Optionally, a DC circuit breaker is also included;

[0018] The first end of the first contact of the DC circuit breaker is connected to the positive pole of the DC power supply, and the second end of the first contact of the DC circuit breaker is connected to the first end of the first locking device and the first end of the second locking device; the first end of the second contact of the DC circuit breaker is connected to the negative pole of the DC power supply, and the second end of the second contact of the DC circuit breaker is connected to the second end of the first locking device and the second end of the second locking device.

[0019] The locking control system for the bus coupler switch cabinet trolley and the bus coupler isolation cabinet trolley provided by the present invention includes: a first locking device and a second locking device. When the bus coupler isolation cabinet trolley is in the non-working position, the sensing element of the first locking device controls the actuator of the first locking device to lock the trolley crank operating handle of the bus coupler switch cabinet trolley, otherwise it is unlocked; when the bus coupler switch cabinet trolley is in the working position, the sensing element of the second locking device controls the actuator of the second locking device to lock the trolley crank operating handle of the bus coupler isolation cabinet trolley, otherwise it is unlocked. It can ensure that the bus coupler isolation cabinet trolley can only be moved from the working position to the test position when the bus coupler switch cabinet trolley is in the test position, and the bus coupler isolation cabinet trolley can only be moved from the test position to the working position when the bus coupler isolation cabinet trolley is in the working position, thereby realizing the interlocking of the moving positions between the bus coupler switch cabinet trolley and the bus couple isolation cabinet trolley, and avoiding operational accidents caused by misoperation of the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. 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 any creative work.

[0021] Figure 1 This is a schematic diagram of the primary power supply system connection between a bus tie switch cabinet trolley and a bus tie isolation cabinet trolley in the prior art;

[0022] Figure 2 A circuit diagram of a locking control system for a bus tie switchgear trolley and a bus tie isolation trolley provided in an embodiment of the present invention;

[0023] Among them, 101 is the busbar switch cabinet trolley, and 102 is the busbar isolation cabinet trolley. DETAILED DESCRIPTION

[0024] The core of the present invention is to provide a locking control system for the busbar switch cabinet trolley and the busbar isolation cabinet trolley, which is used to achieve interlocking of the moving positions between the busbar switch cabinet trolley and the busbar isolation cabinet trolley to avoid operational accidents caused by staff misoperation.

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0026] Figure 1 This is a schematic diagram of the primary power supply system connection between a bus tie switch cabinet trolley and a bus tie isolation cabinet trolley in the prior art; Figure 2 A circuit diagram of a locking control system for a bus tie switchgear trolley and a bus tie isolation trolley provided in an embodiment of the present invention.

[0027] like Figure 1 As shown, the bus tie switchgear trolley 101 is located on the busbar section II side, and the bus tie isolator trolley 102 is located on the busbar section I side. The bus tie switchgear trolley 101 is equipped with a bus tie circuit breaker QF. By operating the bus tie switchgear and bus tie isolator, electrical connection can be established between busbar sections I and II.

[0028] Combine Figure 1 The power outage operation procedures for the high-voltage I and II busbar interconnection cabinets are described as follows:

[0029] Power outage operation procedure: First, disconnect the busbar circuit breaker QF of the busbar switch cabinet trolley 101; second, swing the busbar switch cabinet trolley 101 from the working position to the test position; third, swing the busbar isolation cabinet trolley 102 from the working position to the test position.

[0030] Power supply operation procedure: First, move the bus coupler isolation cabinet trolley 102 from the test position to the working position; second, move the bus coupler switch cabinet trolley 101 from the test position to the working position; third, close the bus coupler circuit breaker QF of the bus coupler switch cabinet trolley 101.

[0031] The bus tie circuit breaker QF is mounted on the bus tie switchgear trolley 101 and can be moved from the working position to the test position and from the test position to the maintenance position. The bus tie isolation cabinet trolley 102 is equipped with a busbar copper busbar that connects the upper and lower sets of conductive contacts (three in each set) within the bus tie isolation cabinet. It can also be moved from the working position to the test position and from the test position to the maintenance position. Both the bus tie switchgear trolley 101 and the bus tie isolation cabinet trolley 102 have three positions and can be moved between them according to work needs.

[0032] The completion status of each step of the above power outage operation can be monitored and confirmed through the switch status comprehensive monitoring device, microcomputer protection measurement and control device, or background monitoring microcomputer.

[0033] like Figure 2 As shown, the locking control system for the bus tie switch cabinet trolley and the bus tie isolation cabinet trolley provided in the embodiment of the present invention includes: a first locking device and a second locking device;

[0034] The sensing element S1 of the first locking device is provided on the bus coupling isolation cabinet trolley 102, and the actuator of the first locking device is provided on the bus coupling switch cabinet trolley 101; when the bus coupling isolation cabinet trolley 102 is in a non-working position (such as a test position or a maintenance position), the sensing element S1 of the first locking device controls the actuator of the first locking device to lock the action of the trolley crank operating handle of the bus coupling switch cabinet trolley 101; when the bus coupling isolation cabinet trolley 102 is in a working position, the sensing element S1 of the first locking device controls the actuator of the first locking device to be energized, so that the trolley crank operating handle of the bus coupling switch cabinet trolley 101 is unlocked;

[0035] The sensing element S2 of the second locking device is provided on the bus coupler switch cabinet trolley 101, and the actuator of the second locking device is provided on the bus coupler isolation cabinet trolley 102; when the bus coupler switch cabinet 101 is in the working position, the sensing element S2 of the second locking device controls the actuator of the second locking device to lock the movement of the trolley crank operating handle of the bus coupler isolation cabinet trolley 102; when the bus coupler switch cabinet trolley 101 is in the test position, the sensing element S2 of the second locking device controls the actuator of the second locking device to be energized, so that the trolley crank operating handle of the bus coupler isolation cabinet trolley 102 is unlocked.

[0036] In a specific implementation, both the first locking device and the second locking device may be electrically controlled locking devices, that is, the action or position of the actuator is controlled by whether the sensing element is energized or not.

[0037] The sensing element S1 of the first locking device and the sensing element S2 of the second locking device can be limit switches. The sensing element S1 of the first locking device can be installed at the chassis position of the bus-coupled isolation cabinet trolley 102, so that when the bus-coupled isolation cabinet trolley 102 reaches the working position, the sensing element S1 of the first locking device touches the metal baffle at the working position of the bus-coupled isolation cabinet trolley 102, causing the contacts inside the sensing element S1 of the first locking device to close. The sensing element S2 of the second locking device can be installed at the chassis position of the bus-coupled switch cabinet trolley 101, so that when the bus-coupled switch cabinet trolley 101 reaches the test position, the sensing element S2 of the second locking device touches the metal baffle at the test position of the bus-coupled switch cabinet trolley 101, causing the contacts inside the sensing element S2 of the second locking device to close. When the contacts in the limit switch are closed, the components in the branch where the contacts are located are triggered to be energized, thereby performing the action.

[0038] Both the first and second locking device actuators can be electromagnets. These electromagnets consist of an electromagnetic coil, an electromagnet core, an electromagnet pin, a metal frame, and an emergency mechanical release lock. The magnetization of the electromagnet core, and thus the position of the electromagnet pin, is controlled by energizing and de-energizing the electromagnet coil, thereby locking and unlocking the electromagnets. When the electromagnetic coil in the locking device actuator is energized, the electromagnet pin is engaged, unlocking the lock.

[0039] like Figure 2 As shown, the inductive element S1 of the first locking device can be connected in series with the electromagnetic coil 1DS1 in the actuator of the first locking device, and the inductive element S2 of the second locking device can be connected in series with the electromagnetic coil 1DS2 in the actuator of the second locking device. Then, the branch containing the first locking device and the branch containing the second locking device can be connected in parallel and then connected in series to both sides of the DC power supply (+KM / -KM). The DC power supply (+KM / -KM) can be a 220V DC power supply.

[0040] In practical applications, the actuator of the first locking device can be set at the chassis position of the main switch cabinet trolley 101. When the sensing element S1 of the first locking device loses power, the actuator of the first locking device presses against the card strip under the chassis of the main switch cabinet trolley 101 to lock the trolley crank operating handle of the main switch cabinet trolley 101; when the sensing element S1 of the first locking device is energized, the actuator of the first locking device is released to unlock the trolley crank operating handle of the main switch cabinet trolley 101, so as to move the main switch cabinet trolley 101 from the test position to the working position. Similarly, the actuator of the second locking device is set at the chassis position of the main bus isolation cabinet trolley 102. When the sensing element S2 of the second locking device loses power, the actuator of the second locking device presses against the card strip under the chassis of the main bus isolation cabinet trolley 102 to lock the trolley crank operating handle of the main bus isolation cabinet trolley 102; when the sensing element S2 of the second locking device is energized, the actuator of the second locking device is released to unlock the trolley crank operating handle of the main bus isolation cabinet trolley 102, and the main bus isolation cabinet trolley 102 can be moved from the working position to the test position.

[0041] For the first locking device and the second locking device, when the sensing member of the locking device loses power, the executive member of the locking device presses against the card bar under the chassis of the handcart cabinet, and the corresponding mechanism connecting rod makes it impossible to press down the pressure plate of the handcart crank operating hole, so that the handcart crank operating handle of the handcart cabinet cannot enter the operating hole, and the handcart cabinet cannot be rocked in and out, thereby achieving the locking of the handcart cabinet; when the sensing member of the locking device is energized, the executive member of the locking device is released to unlock the handcart crank operating handle of the corresponding handcart cabinet.

[0042] In order to avoid the situation where the line is incorrectly locked or cannot be unlocked due to circuit damage (such as the electromagnet coil burns out, the electromagnet lock pin fails to work, etc.) or reduced sensitivity, the locking control system of the busbar switch cabinet trolley and the busbar isolation cabinet trolley provided in the embodiment of the present invention can also include a first emergency unlocking device provided on the actuator of the first locking device for unlocking the actuator of the first locking device, and a second emergency unlocking device provided on the actuator of the second locking device for unlocking the actuator of the second locking device. The emergency unlocking device can specifically be a mechanical transmission structure that connects the actuator of the locking device to the outside of the trolley cabinet, and reserves a button, knob, rocker or keyhole so that when a mechanical trigger is received, the mechanical transmission structure drives the actuator of the locking device to unlock.

[0043] The locking control system for the bus coupler switch cabinet trolley and the bus coupler isolation cabinet trolley provided in an embodiment of the present invention includes: a first locking device and a second locking device. When the bus coupler isolation cabinet trolley is in the non-working position, the sensing element of the first locking device controls the actuator of the first locking device to lock the trolley crank operating handle of the bus coupler switch cabinet trolley, otherwise it is unlocked; when the bus coupler switch cabinet trolley is in the working position, the sensing element of the second locking device controls the actuator of the second locking device to lock the trolley crank operating handle of the bus coupler isolation cabinet trolley, otherwise it is unlocked. It can ensure that the bus coupler isolation cabinet trolley can only be moved from the working position to the test position when the bus coupler switch cabinet trolley is in the test position, and the bus coupler isolation cabinet trolley can only be moved from the test position to the working position when the bus coupler isolation cabinet trolley is in the working position, thereby realizing the interlocking of the moving positions between the bus coupler switch cabinet trolley and the bus couple isolation cabinet trolley, and avoiding operational accidents caused by misoperation of the staff.

[0044] On the basis of the above embodiment, in order to further improve the safety factor of the bus tie switch cabinet trolley 101 and the bus tie isolation cabinet trolley 102, as shown in FIG. Figure 2 As shown, the locking control system of the bus tie switch cabinet trolley 101 and the bus tie isolation cabinet trolley 102 provided in the embodiment of the present invention may further include a DC circuit breaker 1DK;

[0045] The first end of the first contact of the DC circuit breaker 1DK is connected to the positive pole (+KM) of the DC power supply, and the second end of the first contact of the DC circuit breaker 1DK is connected to the first end of the first locking device and the first end of the second locking device; the first end of the second contact of the DC circuit breaker 1DK is connected to the negative pole (-KM) of the DC power supply, and the second end of the second contact of the DC circuit breaker 1DK is connected to the second end of the first locking device and the second end of the second locking device.

[0046] In a specific implementation, the DC circuit breaker 1DK may be a 2P type miniature circuit breaker.

[0047] The sensing element S1 of the first locking device and the electromagnetic coil 1DS1 in the actuator of the first locking device are connected in series between the first end of the first locking device and the second end of the first locking device; the sensing element S2 of the second locking device and the electromagnetic coil 1DS2 in the actuator of the second locking device are connected in series between the first end of the second locking device and the second end of the second locking device.

[0048] By configuring the DC circuit breaker 1DK, the effectiveness of the locking of the first and second locking devices can be controlled. Both the actuators of the first and second locking devices utilize a power-on unlocking mechanism. This means that when the DC circuit breaker 1DK is closed, the first and second locking devices can implement the lock-unlocking control described in the above embodiments. When the DC circuit breaker 1DK is open, both the first and second locking devices become inoperative, and the actuators of the first and second locking devices are de-energized, maintaining the locked state.

[0049] Based on the locking control system of the bus tie switch cabinet trolley and the bus tie isolation cabinet trolley provided in the embodiment of the present invention, and the power outage operation procedure of the high-voltage I and II two-section bus tie cabinet mentioned in the above embodiment, the present invention provides a locking control method for the bus tie switch cabinet trolley and the bus tie isolation cabinet trolley, which specifically includes:

[0050] Close the DC circuit breaker.

[0051] Power outage operation: After disconnecting the busbar circuit breaker QF, move the busbar switch cabinet trolley 101 from the working position to the test position, release the actuator of the second locking device, and then move the busbar isolation cabinet trolley 102 from the working position to the test position.

[0052] Power supply operation: Move the bus coupler isolation cabinet trolley 102 from the test position to the working position, release the actuator of the first locking device, move the bus coupler switch cabinet trolley 101 from the test position to the working position, and close the bus coupler circuit breaker QF.

[0053] The completion status of each of the above operations can be monitored and confirmed through the switch status integrated monitoring device, microcomputer protection measurement and control device or background monitoring machine.

[0054] The above is a detailed introduction to the locking control system for the busbar switchgear trolley and busbar isolation trolley provided by the present invention. The various embodiments in the specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same and similar parts between the various embodiments can be referenced to each other. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

[0055] It should also be noted that, in this specification, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus comprising the element.

Claims

1. A locking control system for a busbar switchgear trolley and a busbar isolation trolley, characterized in that: include: a first locking device and a second locking device; Wherein, the sensing element of the first locking device is provided on the bus-couple isolation cabinet trolley, and the actuator of the first locking device is provided on the bus-couple switch cabinet trolley; when the bus-couple isolation cabinet trolley is in the non-working position, the sensing element of the first locking device controls the actuator of the first locking device to lock the trolley crank operating handle of the bus-couple switch cabinet trolley; when the bus-couple isolation cabinet trolley is in the working position, the sensing element of the first locking device controls the actuator of the first locking device to unlock the trolley crank operating handle of the bus-couple switch cabinet trolley; The sensing element of the second locking device is provided on the bus tie switchgear trolley, and the actuator of the second locking device is provided on the bus tie isolation cabinet trolley; when the bus tie switchgear is in the working position, the sensing element of the second locking device controls the actuator of the second locking device to lock the trolley crank operating handle of the bus tie isolation cabinet trolley; when the bus tie switchgear trolley is in the test position, the sensing element of the second locking device controls the actuator of the second locking device to unlock the trolley crank operating handle of the bus tie isolation cabinet trolley; Also included is a first emergency unlocking device provided on the actuator of the first locking device for unlocking the actuator of the first locking device, and a second emergency unlocking device provided on the actuator of the second locking device for unlocking the actuator of the second locking device; Also includes DC circuit breakers; The first end of the first contact of the DC circuit breaker is connected to the positive pole of the DC power supply, and the second end of the first contact of the DC circuit breaker is connected to the first end of the first locking device and the first end of the second locking device; the first end of the second contact of the DC circuit breaker is connected to the negative pole of the DC power supply, and the second end of the second contact of the DC circuit breaker is connected to the second end of the first locking device and the second end of the second locking device.

2. The locking control system according to claim 1, characterized in that: The sensing element of the first locking device and the sensing element of the second locking device are both specifically travel switches.

3. The locking control system according to claim 2, characterized in that: The sensing element of the first locking device is specifically arranged at the chassis position of the bus-coupled isolation cabinet trolley, so that when the bus-coupled isolation cabinet trolley reaches the working position, the sensing element of the first locking device touches the metal baffle at the working position of the bus-coupled isolation cabinet trolley, so that the contact inside the sensing element of the first locking device is closed; The sensing component of the second locking device is specifically arranged at the chassis position of the main switch cabinet trolley, so that when the main switch cabinet trolley reaches the test position, the sensing component of the second locking device touches the metal baffle at the working position of the main switch cabinet trolley, so that the contacts inside the sensing component of the second locking device are closed.

4. The locking control system according to claim 1, characterized in that: The actuator of the first locking device and the actuator of the second locking device are both specifically electromagnets.

5. The locking control system according to claim 4, characterized in that: The actuator of the first locking device is specifically arranged at the chassis position of the bus tie switch cabinet trolley. When the sensing member of the first locking device loses power, the actuator of the first locking device abuts against the clamping strip under the chassis of the bus tie switch cabinet trolley to lock the trolley crank operating handle of the bus tie switch cabinet trolley. When the sensing member of the first locking device is energized, the actuator of the first locking device is released to unlock the trolley crank operating handle of the bus tie switch cabinet trolley, so as to move the bus tie switch cabinet trolley from the test position to the working position. The actuator of the second locking device is specifically arranged at the chassis position of the main bus isolation cabinet trolley. When the sensing component of the second locking device loses power, the actuator of the second locking device presses against the card bar under the chassis of the main bus isolation cabinet trolley to lock the trolley crank operating handle of the main bus isolation cabinet trolley; when the sensing component of the second locking device is energized, the actuator of the second locking device is released to unlock the trolley crank operating handle of the main bus isolation cabinet trolley, so as to move the main bus isolation cabinet trolley from the working position to the test position.

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