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发明公开
CN105917539A 一种电抗器的匝间保护方法和装置 失效 - 放弃专利权

一种电抗器的匝间保护方法和装置
摘要：
本发明实施方式公开了一种电抗器的匝间保护方法和装置。方法包括：根据实际零序电流确定虚拟零序电压，和/或根据实际负序电流确定虚拟负序电压；根据实际零序电压和虚拟零序电压确定零序动作量和零序制动量，和/或根据实际负序电压和虚拟负序电压确定负序动作量和负序制动量；当零序动作量大于零序制动量和/或负序动作量大于负序制动量时，执行匝间保护动作。本发明可以准确区别电抗器外部故障和内部匝间故障，提高保护灵敏度。
摘要（英）：

A method and apparatus of reactor turn-to-turn protection are provided. The method comprises: determining a virtual zero sequence voltage based on an actual zero sequence current; and / or determining a virtual negative sequence voltage based on the actual negative sequence current; determining a zero sequence operation quantity and a zero sequence restraining quantity based on the actual zero sequence voltage and the virtual zero sequence voltage; and / or determining a negative sequence operation quantity and a negative sequence restraining quantity based on the actual negative sequence voltage and the virtual negative sequence voltage; performing a turn-to-turn protection when the zero sequence operation quantity is greater than the zero sequence restraining quantity and / or when the negative sequence operation quantity is greater than the negative sequence restraining quantity.

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