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Five-prevention loop control system and method for hybrid gas insulated switchgear

An insulating switch, mixed gas technology, applied in electrical components, emergency protection circuit devices, etc., can solve the problems of difficult construction, limited capacity of the mechanism box, high cost, reduce power grid operation accidents, reduce construction difficulty, and reduce equipment damage. Effect

Inactive Publication Date: 2019-07-16
内蒙古电力勘测设计院有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The inventor found in the process of realizing the present invention that the cost of the five-proof operating system is relatively high, which increases the cost of preventing misoperation; if an electrical locking circuit is added to the HGIS equipment, a circuit breaker, an isolating switch, and a grounding switch are required during the locking process. Provide a lot of original auxiliary contacts, due to the limited capacity of the mechanism box, it is difficult to increase auxiliary contacts
In addition, the electrical locking circuit is complicated, and it is necessary to connect the auxiliary contacts of the equipment in each compartment through cables, which makes the construction difficult, the amount of cables is also large, and the cost is high

Method used

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  • Five-prevention loop control system and method for hybrid gas insulated switchgear

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Embodiment 1

[0035] as attached figure 1 As shown, the embodiment of the present invention provides a five-proof loop control system for mixed gas insulated switchgear, including: a power supply 10 , a disconnector control loop 20 , a control switch device 30 and a measurement and control device 40 .

[0036] Among them, the measurement and control device 40 is connected to the mixed gas insulated switchgear body through a cable, so that it can receive the normally open and normally closed position information of the circuit breaker, the normally open and normally closed position information of the isolating switch, and the normally open and normally closed position information of the grounding switch in the device. Information; five anti-blocking circuits 41 are provided in the measurement and control device 40, which are used to carry out five anti-logic judgments based on the normally open and normally closed position information of the above-mentioned circuit breaker, the normally open ...

Embodiment 2

[0048] figure 2 It is a flow chart of the five-proof loop control method for mixed gas insulated switchgear provided in Embodiment 2 of the present invention, and the method is applied to the five-proof loop control system for mixed gas insulated switchgear provided in Embodiment 1. Such as figure 2 As shown, the five-proof circuit control method for mixed gas insulated switchgear provided by Embodiment 2 of the present invention specifically includes:

[0049] S201, in response to closing of the closing control switch or the opening control switch, start the isolation switch control loop.

[0050] Specifically, the operation on the isolating switch includes a closing operation and an opening operation, and the closing control switch and the opening control switch are respectively connected in series in the isolating switch control circuit. In this step, the isolation switch control loop is activated in response to the closing of the closing control switch; or, the isolati...

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Abstract

Embodiments of the invention provide a five-prevention loop control system and method for hybrid gas insulated switchgear; the device comprise a power supply, an isolation switch control loop, a control switch device and a measurement and control device, wherein the measurement and control device is connected with a hybrid gas insulated switchgear body through a cable, and a five-prevention locking loop is arranged in the measurement and control device; a switch-on control switch and a switch-off control switch are arranged in the control switch device, and the switch-on control switch and theswitch-off control switch are connected with the isolation switch control loop in series separately; the isolation switch control loop is connected with the five-prevention locking loop in series; and the control switch device and the five-prevention locking loop are connected with the positive electrode and the negative electrode of the power supply respectively. According to the system and themethod, the cost can be lowered, the cable amount is reduced, the construction difficulty is reduced, the safety operation of the isolation switch in the equipment can be ensured, the misoperation ofthe isolation switch is prevented, and the damage to equipment is reduced.

Description

[0001] 【Technical field】 [0002] The invention relates to the technical field of relay protection, in particular to a five-proof circuit control system and method for mixed gas insulated switchgear. [0003] 【Background technique】 [0004] With the continuous expansion of the grid scale, the ultra-high voltage substations have increased significantly. Due to the pressure of the environment and land occupation, the selection of the main equipment of the ultra-high voltage 500kV substation in my country is very important. Hybrid Gas Insulated Switchgear (HGIS, HybridGas Insulated Switch) is a new type of high-voltage switchgear between gas-insulated metal fully enclosed switchgear (GIS) and conventional open switchgear (AIS), with a small footprint, It has the characteristics of high operational reliability, strong anti-pollution and anti-seismic capabilities, and relatively low price, and easy to repair equipment failures. [0005] In order to prevent misoperation during subs...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H11/00
CPCH02H11/008
Inventor 赵丽君费雪萍菅晓清刘晓明
Owner 内蒙古电力勘测设计院有限责任公司
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