分布式發電系統（DGs）的孤島效應可能導致傳輸的電能質量問題，沖擊電網保護裝置，損壞電力設備，甚至危害人員生命安全，所以有效的孤島檢測方式是DG 入網的關鍵之一。有效的孤島檢測不僅取決于采用何種策略，同時也取決于該種策略下的參數配置。檢測盲區（NDZ）是孤島檢測優劣的重要評判標準之一。本文用目前常用的兩種盲區表述方式，即L ×Cnorm 空間和f norm Q ×C 0 空間，對主動移頻式孤島檢測方法（AFD）的檢測盲區進行分析，給出了理論推導，并進行了仿真和實驗驗證。
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.
關鍵詞：主動移頻；孤島檢測；檢測盲區
Keywords: active frequency drift; islanding detection; non detection zone