广东电力2025，Vol.38Issue(2)：38-46,9.DOI:10.3969/j.issn.1007-290X.2025.02.005
含新能源交流电网的故障电流分布及对过流保护整定的影响
Fault Current Distribution of AC Power Grids with New Energy and Its Effect on Overcurrent Protection Setting
摘要
Abstract
When a short-circuit fault occurs in a power grid,the new energy has a bidirectional current source characteristic of outputting inductive current and absorbing inductive current,which makes the AC grid with new energy show a different fault current distribution characteristic from the traditional grid,and it may bring impact on the overcurrent protection rectification calculation.In order to make setting calculation adapt to the fault conditions with new energy,this paper studies the fault current distribution characteristics of AC grids with new energy sources,and then gives the quantitative conditions of new energy outputs with different fault current distributions,and discusses the influence of fault current distribution characteristics on overcurrent protection rectification.The simulation example demonstrates the correctness of the fault current distribution characteristics and quantitative conditions.关键词
新能源/交流电网/过流保护/故障电流分布/相电气量选择Key words
new energy/AC grid/overcurrent protection/fault current distribution/phase power quantity selection分类
动力与电气工程引用本文复制引用
杨之翰,王峰,朱佳..含新能源交流电网的故障电流分布及对过流保护整定的影响[J].广东电力,2025,38(2):38-46,9.基金项目
中国南方电网有限责任公司科技项目(036000KK52210063/GDKJXM20210094) （036000KK52210063/GDKJXM20210094）
