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Method and system for island detection and anti-islanding protection in distributed power generation systems
Method and system for island detection and anti-islanding protection in distributed power generation systems
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机译:分布式发电系统中孤岛检测和防孤岛保护的方法和系统
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摘要
An effective, yet relatively simple and inexpensive, method for detection of islanding in distributed power generation systems. Statistical analysis of the local line frequency, as measured at the distributed generator, is performed to detect when an island has been formed. The statistical characteristics of the local frequency are controlled by the grid when the distributed generator is not islanding. When an island is formed, however, frequency control switches to circuitry associated with the distributed generator. Because the statistical characteristics of the frequency control performed by the distributed generator are markedly different from those of the grid, the islanding condition can be detected and corrected.
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