GIL/GIS discharge source detection and positioning apparatus and method

Abstract

The invention discloses a GIL / GIS discharge source detection and positioning apparatus and a method. The apparatus and the method are used to detect and position a discharge fault of a GIL / GIS during a voltage withstanding test or operation. The apparatus comprises vibration sensors fixed to a GIL / GIS shell, detection terminals and an upper computer. The vibration sensors and the detection terminals are arranged in each air chamber of equipment to be detected. When the GIL / GIS generates discharge, each vibration sensor receives a discharge-excited vibration signal. Each detection terminal carries out amplification, filtering and acquisition processing on a discharge signal. The upper computer carries out synchronization on acquisition of each terminal through a wireless network and receives acquisition data so that accurate analysis and positioning to the discharge signal are realized.

Description

technical field [0001] The invention relates to a technology for detecting the insulation state of electric equipment and its application field, in particular to a device and method for detecting and locating a discharge source of a GIL / GIS. Background technique [0002] Gas-insulated metal-enclosed switchgear (GIS) and gas-insulated transmission lines (gas-insulated line, GIL) have the advantages of small footprint, small size, high reliability and simple maintenance, and are widely used in urban In high-voltage power transmission and transformation systems such as power grids, power plants, and large factories and mines. At present, GIS and GIL have become important equipment in the power system, and their own reliability is related to the stable and safe operation of the entire power network. [0003] Some insulation defects are sometimes introduced during the manufacture, on-site installation, commissioning and operation of GIS / GIL. After the equipment is electrified, t...

AI Technical Summary

Problems solved by technology

However, there are still some technical problems to be solved in the actual application of the existing detection devices: 1) The data communication between each detection terminal module of some devices and the host computer is connected by optical fiber cables, which can realize data transmission Real-time transmission is isolated from high voltage, but its installation and wiring are difficult when used on site, and it is not suitable for testing the GIL with a long distance; 2) For the discharge positioning device using wireless network communication, there is no effective communication between the collection terminals Time synchronization method, and if the hardware time synchronization module is used, the system structure is complicated and the cost is also increased

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