A high-voltage switch cabinet anti-static misoperation grounding knife system

Abstract

The utility model provides a kind of high voltage switch cabinet anti-electrification false closing grounding knife system, including switch cabinet main body, control system is set on the switch cabinet main body, the control system signal connection induction module, grounding knife gate shaft mechanical lock, cabinet door lock, knife gate operating hole alarm switch and alarm unit;The induction module is set in the switch cabinet main body, and the power-on or power-off signal of switch cabinet is reported to the control system;The control system is based on induction module signal reporting control grounding knife gate shaft mechanical lock and cabinet door lock opening and closing;In the power-on state, after the knife gate operating hole alarm switch triggers, alarm unit is controlled by control system to alarm.The utility model solves the problem that existing technology high voltage switch cabinet grounding knife closing operation process is not safe, realizes the real-time monitoring under the power-on state, and strictly locks the opening and closing action of cabinet door based on this, prevent the occurrence of misoperation condition, improve equipment operation safety.

Description

Technical Field

[0001] This utility model relates to the field of general electromechanical engineering, and in particular to a high-voltage switchgear anti-accidental closing of the grounding switch system. Background Technology

[0002] The anti-misclosing method of the grounding switch of high voltage switchgear is mostly composed of mechanical interlocking and electronic interlocking of the five-prevention system. The mechanical interlocking logic is that when the circuit breaker is closed, the handcart cannot be pulled to the test position, and when the handcart is not in the test position, the grounding switch cannot be closed. In other words, the mechanical interlocking has no electrical logic relationship.

[0003] The five-prevention interlocking system simulates the operation process in the background machine. The operator downloads the operation ticket step by step, and the system simulates the operation according to the principle of the switchgear. It does not involve the operation mode of the running line, so the energization status of the lower end of the ring network switchgear cannot be effectively determined.

[0004] When personnel operate transformers, dual-power supply cabinets, and other ring main units, the electronic five-proof lock downloads the operation ticket according to the operation items. The fact that the bottom of the ring main unit switch is energized does not involve the operation content. If the operator is negligent, the grounding switch or grounding wire may be accidentally connected while the switch is energized, causing a serious electrical accident. Utility Model Content

[0005] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a high-voltage switchgear anti-accidental grounding switch system with reliable operating logic, multi-locking interlocking, and the inability to close the switch in a live state.

[0006] The equipment includes a switch cabinet body, on which an integrated control system is installed. The integrated control system is connected to a signal sensing module, a grounding switch shaft mechanical interlock, a cabinet door interlock, an alarm switch and alarm unit for the switch operating hole. The sensing module is installed inside the main body of the switch cabinet and sends a power-on or power-off signal to the integrated control system. The integrated control system controls the mechanical locking of the grounding switch shaft and the opening and closing of the cabinet door based on the signal reported by the sensing module; when the power is on, after the alarm switch of the switch operation hole is triggered, the integrated control system controls the alarm unit to sound an alarm.

[0007] The effect achieved is that, in the high-voltage power-off state, the integrated control system controls the mechanical interlock of the grounding switch shaft and the cabinet door interlock to open, and the alarm unit and the alarm switch of the switch operating hole are disconnected, and maintenance and disconnection are performed in this state; in the power-on state, the integrated control system controls the mechanical interlock of the grounding switch shaft and the cabinet door interlock to close, and it cannot be opened from the outside; after the alarm switch of the switch operating hole is triggered, an alarm is triggered immediately to remind the staff of dangerous operation, and in this state, based on the locked state of the mechanical interlock of the grounding switch shaft, even if a rocker arm is inserted into the switch operating hole, the disconnection operation cannot be performed.

[0008] The beneficial effects of this utility model are: This utility model solves the problem of insufficient safety in the grounding switch closing operation process of high voltage switchgear in the prior art, realizes real-time monitoring under the power-on state, and strictly locks the tripping action, i.e. cabinet door opening and closing action, to prevent the occurrence of misoperation and improve the safety of equipment operation. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the positional relationship structure of a high-voltage switchgear anti-accidental closing grounding switch system according to the present invention; Figure 2 This is a schematic diagram of the operating logic of a high-voltage switchgear anti-accidental closing of the grounding switch system according to the present invention; Figure label: 1-Integrated control system; 2-Induction module; 3-Cabinet door interlock; 4-Grounding switch shaft mechanical interlock; 5-Switch operating hole alarm switch; 6-Alarm unit The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0010] Reference Figure 1 , Figure 2 The present invention provides a high-voltage switchgear anti-accidental grounding switch system, comprising a switchgear body, on which an integrated control system 1 is provided. The integrated control system 1 is connected to a signal sensing module 2, a grounding switch shaft mechanical interlock 4, a cabinet door interlock 3, a switch operating hole alarm switch 5, and an alarm unit 6. The sensing module 2 is installed inside the main body of the switch cabinet and sends a power-on or power-off signal to the integrated control system 1. The integrated control system 1 controls the opening and closing of the mechanical interlock 4 of the grounding switch shaft and the cabinet door interlock 3 based on the signal sent by the sensing module 2; when the power is on, after the alarm switch 5 of the switch operation hole is triggered, the integrated control system 1 controls the alarm unit 6 to sound an alarm.

[0011] The effect achieved is that, in the high-voltage power-off state, the integrated control system 1 controls the mechanical interlock of the grounding switch shaft and the cabinet door interlock 3 to open, and the alarm unit 6 and the alarm switch 5 of the switch operating hole are disconnected, and maintenance and disconnection are performed in this state; in the power-on state, the integrated control system 1 controls the mechanical interlock of the grounding switch shaft and the cabinet door interlock 3 to close, and it cannot be opened from the outside; after the alarm switch 5 of the switch operating hole is triggered, an alarm is triggered immediately to remind the staff of dangerous operation, and in this state, based on the locked state of the mechanical interlock of the grounding switch shaft, even if a rocker arm is inserted into the switch operating hole, the disconnection operation cannot be performed.

[0012] In Example 1, the sensing module 2 is installed on the inner bottom surface of the switch cabinet body, and the sensing module 2 adopts a photoelectric sensor or a magnetic sensor.

[0013] The effect achieved in this way is to adapt to the power system.

[0014] Example 2: The integrated control system 1 uses a microprocessor and a single-chip microcomputer.

[0015] The effect achieved in this way is to coordinate the control of each module based on existing mature control technologies.

[0016] Furthermore, the integrated control system 1 is also equipped with a display module for signal connection, and the integrated control system 1 and the display module are integrated together. The display module displays the status information of the grounding switch, including its open / closed state and position information.

[0017] This achieves the effect of real-time display of the grounding switch status.

[0018] In Example 3, the alarm unit 6 is an audible and visual alarm unit.

[0019] Preferably, the audible and visual alarm unit includes both audible and visual prompts. The audible prompts may include voice prompts such as "Please disconnect the power before operating"; the visual prompts may include visual prompts such as a red indicator light illuminating. The audible prompts can be implemented using audio devices such as speakers or buzzers, and the visual prompts can be implemented using light source devices such as LED lights or neon lights.

[0020] In Example 4, both the grounding switch shaft mechanical lock 4 and the cabinet door lock 3 are electromagnetic mechanical locks. The locking bar of the mechanical lock 4 of the grounding switch shaft is inserted into the pin hole on the grounding switch shaft; The cabinet door lock 3 is fixedly installed inside the switch cabinet body, and its lock bar passes through the switch cabinet body and its cabinet door.

[0021] The effect achieved in this way is to fully lock it in place.

[0022] In Example 5, the alarm switch 5 for the knife switch operation port is a piezoelectric switch.

[0023] This means that the pressure point switch corresponds to the baffle of the alarm switch 5 in the knife switch operating hole. Specifically, a baffle is hinged to the outside of the knife switch operating hole, and the alarm switch 5 is located in a slot below the baffle. When the baffle is activated, the pressure point switch is triggered, thus activating the alarm.

[0024] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0025] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A system for preventing accidental closing of a grounding switch on a high-voltage switchgear, comprising a switchgear body, characterized in that: An integrated control system is installed on the main body of the switch cabinet. The integrated control system is connected to a signal sensing module, a grounding switch shaft mechanical interlock, a cabinet door interlock, an alarm switch and alarm unit for the switch operating hole. The sensing module is installed inside the main body of the switch cabinet and sends a power-on or power-off signal to the integrated control system. The integrated control system controls the mechanical locking of the grounding switch shaft and the opening and closing of the cabinet door based on the signal reported by the sensing module; when the power is on, after the alarm switch of the switch operation hole is triggered, the integrated control system controls the alarm unit to sound an alarm.

2. The high-voltage switchgear anti-accidental closing of the grounding switch system according to claim 1, characterized in that, The sensing module is located on the bottom surface inside the main body of the switch cabinet, and the sensing module adopts a photoelectric sensor or a magnetic sensor.

3. A high-voltage switchgear anti-accidental closing of grounding switch system according to claim 1, characterized in that, The integrated control system uses a microprocessor and a single-chip microcomputer.

4. A high-voltage switchgear anti-accidental closing of grounding switch system according to claim 3, characterized in that, The integrated control system is also equipped with a display module for signal connection, and the integrated control system and the display module are integrated together. The display module displays the status information of the grounding switch, including its open / closed state and position information.

5. A high-voltage switchgear anti-accidental closing of grounding switch system according to claim 1, characterized in that, The alarm unit is an audible and visual alarm unit.

6. A high-voltage switchgear anti-accidental closing of grounding switch system according to claim 1, characterized in that, The aforementioned grounding switch shaft mechanical interlock and cabinet door interlock are both electromagnetic mechanical interlocks; The locking bar for mechanical locking of the grounding switch shaft is inserted into the pin hole on the grounding switch shaft; The cabinet door lock is fixedly installed inside the switch cabinet body, and its lock bar passes through the switch cabinet body and the cabinet door.

7. A high-voltage switchgear anti-accidental closing of grounding switch system according to claim 1, characterized in that, The alarm switch for the knife switch operating port is a piezoelectric switch.

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