HGIS intelligent switch

Abstract

The invention discloses a hybrid gas insulated switchgear (HGIS) intelligent switch. An intelligent component cabinet and a split-phase combined electronic current transformer are arranged on a conventional HGIS, wherein the intelligent component cabinet comprises three parts, namely an intelligent controller, a switch online monitoring device and a digital energy meter; the intelligent controller comprises a protection functional module, a measurement and control functional module, a merge unit module and an operation box module, wherein the switch online monitoring device is a physically independent switch online monitoring device, comprises an installed displacement sensor, an installed SF6 micro-water pressure and temperature sensor and an installed current sensor, and performs switchself-diagnosis together with the intelligent controller; the physically independent digital energy meter is connected with the merge unit module of the intelligent controller through a multimode optical fiber and acquires voltage and current signals from the merge unit module to perform related operations in the aspect of metering; and the split-phase combined electronic current and voltage transformer is arranged between the switch of the HGIS and a leading-out terminal insulator. The HGIS intelligent switch solves outdoor operation problems of intelligent components.

Description

technical field [0001] The invention relates to a primary HGIS intelligent switchgear used in a smart grid. Background technique [0002] Switchgear is an important control and protection device in power system. The task of the circuit breaker in the switchgear is to put the power equipment or lines into or out of operation according to the requirements of the grid operation, or to quickly remove the faulty power equipment or lines from the grid to ensure the normal operation of the fault-free part of the grid. Once the switchgear fails, it may cause an accident in the power system and cause economic losses to users. [0003] The structure of the traditional HGIS switch is: a conventional current transformer (CT) 1; a spring operating mechanism box 2; a control box 3. The conventional current transformer is installed between the circuit breaker and the outlet terminal, and outputs analog signals for sampling by traditional analog secondary equipment, including protection, ...

AI Technical Summary

Problems solved by technology

[0005] In the current stage of digital substation construction, although the process layer equipment has been digitized, due to insufficient integration, most manufacturers, such as protection equipment, intelligent terminals, merging units, measurement and control devices, and online monitoring devices, are all independent physical units, which leads to inability and disconnection. The original secondary circuit of the switchgear cannot be simplified, and only the semi-intelligence of the switchgear can be achieved.

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