可再生能源2024，Vol.42Issue(5)：655-663,9.
新能源场站高比例接入下主流类型工频量距离保护比对
Comparison of manufacturers'power frequency distance protection algorithms with high proportion of renewable energy
摘要
Abstract
With the increasing connection of renewable energy power plants(REPPs),there are some problems that power frequency distance protection criterion cannot identify grid faults.Therefore,this paper focuses on the extraction algorithm of power frequency and protection criteria in the device,and analyzes the adaptability of distance protection algorithms from different manufacturers with high proportion of renewable energy power plants.Regarding the power frequency extraction algorithm,the aperiodic component characteristics of the short-circuit current provided by different renewable energy power plants were explored.The error of Fourier algorithm caused by the influence of harmonic was further derived.For the protection criteria,the adaptability of directional circle,polygon,phase comparison,and power frequency variation distance protection was compared and analyzed,and the distance protection criteria that can be well applied to high proportion of renewable energy power plants were clarified.关键词
新能源场站/距离保护判据/工频量提取/短路电流/谐波分量Key words
renewable energy power plants/distance protection operating equation/fundamental frequency extraction/short-circuit current/harmonic component分类
能源科技引用本文复制引用
王丹枫,刘素梅,郑燃,李伟,于子轩..新能源场站高比例接入下主流类型工频量距离保护比对[J].可再生能源,2024,42(5):655-663,9.基金项目
国家自然科学基金项目(52107069) （52107069）
中央高校基本科研业务费专项资金项目研究项目(2018BLRD02). （2018BLRD02）
