Neutral Earthing Via Arc Analysis Of Arc Suppression Coil Grounding System

Neutral point grounding mode is an important technology in grid system, andwith the application of electric power enterprise in our country’s continuousdevelopment of increasingly widespread. Nowadays the development speed ofChinese city distribution network is accelerating, the extensive application ofcable inthe city distribution network, which makes the city power systemgrounding capacitycontinues to increase, make the single-phase instantaneousgrounding fault currentincreases, causing the ground current can not extinguish,cause the single-phaseinstantaneous grounding fault cannot be released, how to solve the problem? Todaymost is the use of neutral grounding via arc suppression coil system to solve.The neutral grounding via arc suppression coil system can be reducedbycapacitive current of fault point, achieve lower voltage, easy arc extinguishing, soas to improve the reliability of power network of power system, and has agoodelectromagnetic compatibility effect. But this kind of eliminate arc currentalsoexist some problems, such as fault line selection protection configuration. It isworth further research and improvement.This article first describes the development situation of neutral grounding modeathome and abroad, and points out that the existence of the midline point groundingmode of the question and the trend of development, and further to theneutral principleof arc suppression coil grounding system compare and analysis,in-depth study of theadvantages and disadvantages of three kinds of importantgrounding type, and the userthe reliability of power supply, communication system, personal safety, electricalequipment insulating the level effect of simpleanalysis.Secondly, the distribution network of a simple single phase to groundfaultsimulation using the power simulation tools of MATLAB, and analyzes andstudiesthree kinds of main grounding mode.Finally, a summary of the advantages of neutral point via arc suppression coilgrounding system, and the neutral point through discussing the arc suppression coilgrounding manner of the related problems.