GIS局部放电带电检测技术在保定供电公司的应用研究
[Abstract]:GIS equipment is widely used in various voltage level substations because of its compact structure, small area, less daily maintenance workload and so on. But once the GIS equipment has insulation failure, it will cause a large area power failure, and its repair time is longer than the open equipment. Therefore, it is of great practical significance to strengthen the research of GIS partial discharge live detection technology and discover the insulation defects and faults in GIS in time for ensuring the safe and reliable operation of GIS. Firstly, the mechanism and characteristics of partial discharge (PD) in GIS equipment are deeply studied, and on the basis of this, several common GIS PD live detection techniques, such as pulse current method, UHF method and ultrasonic method, are analyzed. According to the characteristics of UHF method and ultrasonic method, the two methods mentioned above are proposed to detect GIS partial discharge charge simultaneously. Secondly, the principle of the new GIS partial discharge detection system is expounded, and the hardware and software parts of the detection system are designed in detail. The core technologies such as synchronous phase calculation and multi-source local separation are introduced in detail. On the basis of this, the detailed detection steps are designed. Finally, the GIS partial discharge detection device mentioned in this paper is used to detect and locate the internal defects of GIS equipment in several substations in Baoding area. According to the test results, the hidden dangers of the defects are eliminated in time. Ensure the safe and stable operation of GIS equipment.
【学位授予单位】:华北电力大学
【学位级别】:硕士
【学位授予年份】:2017
【分类号】:TM595
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