电力系统保护与控制2024，Vol.52Issue(10)：44-53,10.DOI:10.19783/j.cnki.pspc.231050
含换流器型分布式电源配电网的不对称短路电流计算方法
Asymmetric short-circuit current calculation of a distribution network with inverter-based distributed generation
摘要
Abstract
To meet the general requirements for asymmetric short-circuit calculation in distribution networks,a study is conducted on the calculation method with inverter-based distributed generation(IBDG),considering the diverse characteristics of asymmetrical short-circuits caused by IBDG.This method establishes a universal model that is applicable to the equivalent of IBDG asymmetric short-circuit positive and negative sequences with various control objectives.The establishment of this model is based on the principle of positive and negative sequence current control with IBDG asymmetric short-circuit and the short-circuit current output characteristics with different control objectives,as well as the specific requirements of low voltage ride-through and current limiting control for IBDG output asymmetric short-circuit current.Based on this model,a universal asymmetric short-circuit equivalent circuit and calculation equation are established,and a general calculation process for short-circuit current occurring at any node of the distribution network with any asymmetric short-circuit for multiple IBDG control objectives is obtained.Finally,the proposed method is verified in a distribution network example,and the results show that the proposed method is correct and effective.关键词
配电网/不对称短路电流计算/换流器型分布式电源/控制原理/通用计算Key words
distribution network/asymmetric short-circuit current calculation/inverter based distributed generation/control principle/general-purpose computation引用本文复制引用
杨杉,喻希,罗朝旭,张晓彤..含换流器型分布式电源配电网的不对称短路电流计算方法[J].电力系统保护与控制,2024,52(10):44-53,10.基金项目
This work is supported by the National Natural Science Foundation of China(No.52207205). 国家自然科学基金项目资助(52207205) （No.52207205）
湖南省教育厅科学研究项目资助(22C0308) （22C0308）
