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介绍了PMH-150型中阻抗母线差动保护装置的原理和特点,分析了这种母线差动保护在小浪底水电厂的实际应用,其性能较稳定,对电网的安全运行有着非常重要的意义。
The principle and characteristics of PMH-150 medium impedance bus differential protection device are introduced. The practical application of this bus differential protection in Xiaolangdi Hydropower Plant is analyzed. Its performance is stable and it is very important to the safe operation of power grid.