电力系统自动化2017，Vol.41Issue(18)：67-73,7.DOI:10.7500/AEPS20170116008
基于阻抗特性的IIDG孤岛保护与故障穿越协调运行方法
Impedance Characteristic Based Coordinated Operation Method for Islanding Protection and Fault Ride-through of Inverter Interfaced Distributed Generator
摘要
Abstract
For the operation conflict problems existing between islanding protection (IP) and fault ride-through (FRT) function of inverter interfaced distributed generator (IIDG),an impedance characteristic based coordinated operation method for IP and FRT of IIDG is proposed.Based on the transfer function analytical model of equivalent impedance at point of common connection (PCC),the impedance characteristics under conditions of grid connected and islanding operation are analyzed.The simultaneous detection of islanding and transient voltage disturbance in the same inverter is achieved according to the variable features of PCC harmonic impedance,thus the IP and FRT functions are performed correctly.Example analysis shows that the proposed method is able to effectively identify islanding and transient voltage disturbance,while coordinating the IP and FRT functions.It has better compatibility for available FRT and dynamic reactive power support methods.Thus,it is beneficial for IIDG to actively participate in grid regulation and better adapt to high penetration integration in distributed networks.关键词
阻抗特性/孤岛保护/故障穿越/动态无功支撑/逆变型分布式电源Key words
impedance characteristic/islanding protection (IP)/fault ride-through (FRT)/dynamic reactive power support inverter interfaced distributed generator (IIDG)引用本文复制引用
叶林,苗丽芳,苏剑,吕志鹏,饶日晟,张亚丽..基于阻抗特性的IIDG孤岛保护与故障穿越协调运行方法[J].电力系统自动化,2017,41(18):67-73,7.基金项目
This work is supported by State Grid Corporation of China (No.PD71-15-038).国家电网公司科技项目(PD71-15-038). （No.PD71-15-038）
