分布式發(fā)電系統(tǒng)（DGs）的孤島效應(yīng)可能導(dǎo)致傳輸?shù)碾娔苜|(zhì)量問(wèn)題，沖擊電網(wǎng)保護(hù)裝置，損壞電力設(shè)備，甚至危害人員生命安全，所以有效的孤島檢測(cè)方式是DG 入網(wǎng)的關(guān)鍵之一。有效的孤島檢測(cè)不僅取決于采用何種策略，同時(shí)也取決于該種策略下的參數(shù)配置。檢測(cè)盲區(qū)（NDZ）是孤島檢測(cè)優(yōu)劣的重要評(píng)判標(biāo)準(zhǔn)之一。本文用目前常用的兩種盲區(qū)表述方式，即L ×Cnorm 空間和f norm Q ×C 0 空間，對(duì)主動(dòng)移頻式孤島檢測(cè)方法（AFD）的檢測(cè)盲區(qū)進(jìn)行分析，給出了理論推導(dǎo)，并進(jìn)行了仿真和實(shí)驗(yàn)驗(yàn)證。
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.
關(guān)鍵詞：主動(dòng)移頻；孤島檢測(cè)；檢測(cè)盲區(qū)
Keywords: active frequency drift; islanding detection; non detection zone