摘要
大规模光伏(PV)并网给电力系统减轻了供电负担,同时也给系统运行带来了巨大挑战。为了应对孤岛效应问题,提出一种基于频率-无功电流反馈的孤岛检测方法,通过建立无功电流扰动与频率之间的正反馈关系,实现快速孤岛检测。通过PSCAD/EMTDC软件搭建光伏发电系统模型,基于IEC孤岛检测测试电路框架验证所提方法。仿真结果表明,所提方法能在0.04 s内检测出孤岛现象,验证了所提方法的有效性。
The large-scale grid-connected photovoltaic(PV)brings huge challenges to the system operation while reducing the power supply burden.To address the problem of islanding effect,an islanding detection method based on frequency-reactive current feedback is proposed.Fast islanding detection is realized by establishing a positive feedback relationship between reactive current disturbance and frequency.A PV power generation system model is established with PSCAD/EMTDC software,and the proposed method is verified based on the IEC islanding detection test circuit framework.The simulation results show that the proposed method can detect the islanding phenomenon in 0.04 s,which verifies the effectiveness of the proposed method.
作者
张健
马骁兵
张耀升
郝韩兵
ZHANG Jian;MA Xiaobing;ZHANG Yaosheng;HAO Hanbing(Huaibei Power Supply Bureau of State Grid Anhui Electric Power Grid Co.,Ltd.,Huaibei 235000,China)
出处
《微型电脑应用》
2025年第6期281-284,共4页
Microcomputer Applications
