摘要
低压直流微电网(DCMG)能够满足未来日益增长的能源需求和解决传统电力系统所带来的问题。尽管DCMG相对于交流微电网有一些优势,但DCMG仍有几个问题有待研究,如DCMG系统的接地,选择一个合适的接地方案将加快DCMG与电网的整合。为了设计适合DCMG的接地和保护方案,确定系统暂态和稳态接地故障特征至关重要。文章模拟了不同接地配置的接地故障,并对结果进行了分析,以确定接地配置和接地故障检测方案,从而实现可靠的故障检测和负载不间断供电。
Low voltage DC microgrid(DCMG)can meet the increasing energy demand in the future and solve the problems brought by the traditional power system.Although DCMG has some advantages over AC microgrid,DCMG still has several problems to be studied,such as the grounding of DCMG system.Selecting an appropriate grounding scheme will accelerate the integration of DCMG and power grid.In order to design a suitable grounding and protection scheme for DCMG,it is very important to determine the characteristics of transient and steady-state grounding faults.This paper simulates the ground faults of different ground configurations,and analyzes the results to determine the ground configuration and ground fault detection scheme,so as to achieve reliable fault detection and uninterrupted load power supply.
作者
赵勇呓
赵创业
孙振兴
Zhao Yongyi;Zhao Chuangye;Sun Zhenxing(State Grid Anhui Electric Power Co.,Ltd.,Huaibei Power Supply Company,Huaibei 235000,China)
出处
《江苏科技信息》
2022年第16期33-37,共5页
Jiangsu Science and Technology Information
关键词
直流微电网
接地故障
接地设计
DC microgrid
grounding fault
grounding design
