微机式发电机内部短路保护  

Protection for Short Circuit Fault of Generator Based on Microcomputer

作　　者：王增平[1,2] 高中德[1,2] 黄少锋[1,2] 柳焯 

机构地区：[1]华北电力大学电力系 [2]哈尔滨工业大学电气系

出　　处：《华北电力大学学报（自然科学版）》1998年第1期8-14,共7页Journal of North China Electric Power University：Natural Science Edition

摘　　要：讨论了微机式新型转子二次谐波型负序功率方向保护、纵向零序电压型负序功率方向保护及单元件横差保护的判据、算法及有关实现方法。提出了转子二次谐波电流元件、纵向零序电压元件和负序功率方向元件的配合关系，以及提高负序功率方向元件灵敏度、可靠性的措施。The criteria, algorithms and realization of several new types of microcomputer based protection are discussed in the paper, including two types of negative phase sequence directional power protection, second-harmonic current of exciting winding type and longitudinal zero-sequence voltage type, and single-element cross differential protection.The cooperative relationship between second-harmonic current element of exciting winding, longitudinal zero-sequence voltage element and the negative phase sequence directional power elements is given out. The means of improving sensitivity and reliability of negative phase sequence directional power elements is also given. Test results show that the protection possesses high sensitivity and reliability.

关 键 词：发电机 继电保护 微型机 短路保护 

分 类 号：TM310.6[电气工程—电机]