Evaluation Method for Single-phase Fault Processing Technology of Distribution Network based on Safety Protection

摘要

The causes and processes of personal accidents in the distribution network have extremely complicated factors. Due to the lack of scientific understanding of the basic laws of safety risks, personal accidents are repeatedly happened, leading to vicious electric shock accidents. In addition, if faults cannot be handled quickly and in a timely manner, ground faults can easily cause device overvoltage, causing equipment burnout and even causing fire accidents. Single phase grounding fault and power failure will reduce the reliability of power supply and directly affect industrial production and people’s living standards. This article is mainly based on the international advanced safety management concept. By identifying the influencing factors of single-phase grounding in distribution networks and closely integrated with power grid enterprises actual field operations, using the “5M safety risk factor” theory to analyze the personal safety and equipment safety influencing factors in power supply operations, extract six major influence factors that have a greater impact on the distribution network operation and personal safety. Based on the above points, a quantitative assessment model, index, and method system for single-phase fault processing based on security protection are proposed to effectively improve the person and device safety in power grid companies. Pre-control ability has very important practical value and promotion significance. It can provide a strong reference for the primary and secondary equipment and structure design of the new distribution network and the adjustment of the operating mode of the distribution network in operation, and effectively guide the operation and maintenance of the distribution network.