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本文对大型水轮发电机失励磁保护,在动模试验的基础上进行了理论分析;论证了机组在失励和其他特殊运行情况下的基本特性;阐明了在阻抗复数平面上失励保护动作区的要求范围和在各种特殊运行情况下机组的测量阻抗变化轨迹;为评价已有失励保护和研制新型失励保护提供了理论根据,并对现有阻抗型失励保护进行了分析和评价,提出了新的方案。
In this paper, the theoretical analysis of dynamic magneto-impulse magnetrons protection of large-scale hydroelectric generator is given. The basic characteristics of the generator in case of excitation and other special operation are demonstrated. The scope of the requirements of the district and the variation of the measured impedance of the unit under various special operating conditions. This provides a theoretical basis for evaluating the existing under-protection and developing a new type of protection against inrush and analyzes the existing impedence-type protection against inrush protection Evaluation, proposed a new program.