Analysis and Suggestion on Neutral Grounding Mode for Shanghai Distribution Network Considering Power Supply Reliability

2019 4th Asia Conference on Power and Electrical Engineering

能源学;电工学

Jun, Liu^1 ; Ling, Shi^2 ; Haifeng, Tang^2 ; Lei, Yang^3 ; Fan, Yang^1

Electric Power Research Institute, SMEPC, 171# HanDan Rd., Shanghai, China^1

Shibei Electric Power Supply Company, SMEPC, 2511# HongHeXin Rd., Shanghai, China^2

Shinan Electric Power Supply Company, SMEPC, 1651# YiShan Rd., Shanghai, China^3

关键词: Analysis and suggestions;    Medium-voltage distribution networks;    Neutral grounding modes;    Power supply reliability;    Protection configurations;    Reliable power supply;    Safety requirements;    Technical principle;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/486/1/012017/pdf
DOI  :  10.1088/1757-899X/486/1/012017

来源: IOP

【 摘 要 】

The demand for reliable power supply in large cities is the major concern for both consumers and company, and power outages have uprising influence on economic losses and social impacts. With the continuing growth of underground cable ratio in Shanghai, the medium-voltage distribution network structures are experiencing changes. The choice of grounding method has considerable impact on operation safety and system reliability. It is crucial to carry out in-depth and systematic analysis on different grounding modes. This paper analyzes the technical route, insulation coordination, protection configuration and system reliability for neutral grounding mode for Shanghai distribution network with regard to the development status and safety requirements of urban medium voltage distribution grid, providing effective technical principles and engineering proposals for system planning and safe operation.