Abstract
In electric power system, because there is no stability problems of the bus of 35kV and below the voltage level, usually not installed bus bar protection. The generated arc when short circuit fault take place caused great harm to equipment and personnel, and some may trigger a chain of accidents. For the current situation, the main work of this paper is as follows: detailed analysis of the reasons for switchgear short circuit, and generated harms. Switchgear equipment overheating, composition of arc fault warning and protection systems and the function of every section. Analysis and research the reasons and influencing factors of the malfunction of the bus caused by switchgear short circuit failure, and then take effective protective measures. It has a very important practical significance. Discussed the configuration application of the new switchgear equipment arc warning and protection equipment in electric power system, seek the minimum cost and easiest connection for maximum claimed for protected distribution equipment to safely operate.
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