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主动移频式孤岛检测方法的盲区分析与实验研究
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2010-02-22
刘杰
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分布式发电系统（DGs）的孤岛效应可能导致传输的电能质量问题，冲击电网保护装置，损坏电力设备，甚至危害人员生命安全，所以有效的孤岛检测方式是DG 入网的关键之一。有效的孤岛检测不仅取决于采用何种策略，同时也取决于该种策略下的参数配置。检测盲区（NDZ）是孤岛检测优劣的重要评判标准之一。本文用目前常用的两种盲区表述方式，即L ×Cnorm 空间和f norm Q ×C 0 空间，对主动移频式孤岛检测方法（AFD）的检测盲区进行分析，给出了理论推导，并进行了仿真和实验验证。
Abstract: Islanding of distribution power system have adverse impact on power quality and utility
equipments, even worse, it may damage people’s lives. Anti-islanding is a key consideration for grid-connected
DG. The effects of anti-islanding are not only subject to the strategy it employed, but also the parameter setting.
Non-detection zone (NDZ) is important index to evaluate the anti-islanding performance. In this paper, the NDZs
of active frequency drift with positive (AFDPF) are mapped into two different load space, i.e. L×Cnorm space and Qf 0×Cnorm space. Based on it, theoretical deductions are given and simulations as well as experiments are developed to validate the discussions.
关键词：主动移频；孤岛检测；检测盲区
Keywords: active frequency drift; islanding detection; non detection zone
Abstract: Islanding of distribution power system have adverse impact on power quality and utility
equipments, even worse, it may damage people’s lives. Anti-islanding is a key consideration for grid-connected
DG. The effects of anti-islanding are not only subject to the strategy it employed, but also the parameter setting.
Non-detection zone (NDZ) is important index to evaluate the anti-islanding performance. In this paper, the NDZs
of active frequency drift with positive (AFDPF) are mapped into two different load space, i.e. L×Cnorm space and Qf 0×Cnorm space. Based on it, theoretical deductions are given and simulations as well as experiments are developed to validate the discussions.
关键词：主动移频；孤岛检测；检测盲区
Keywords: active frequency drift; islanding detection; non detection zone
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