采用傅里叶算法对部分主设备保护继电器性能的影响分析  

Influence on some main-apparatus protection performance by adopting DFT-based digital relays

作　　者：陈建玉[1] 侯喆[1] 李志坚 

机构地区：[1]国电自动化研究院,江苏南京210003 [2]南瑞集团动力控制公司,江苏南京210003

出　　处：《继电器》2005年第23期9-11,40,共4页Relay

摘　　要：在分析傅里叶算法的基础上,指出了基于傅里叶算法的数字式继电器在电力主设备保护中应用的局限性,论证了采用此算法的电流差动、过电压、过负荷、零序过电流等继电器在发电机、串联电抗器、并补电容器、接地变压器等主设备中应用时对保护性能的影响,介绍了该类继电器在实际运行中出现不正确动作行为的事例,提出了改善保护性能的改进算法。This paper points out the shortcomings of the digital relay based on DFT, which is applied in main-apparatus protection. And it discusses the influence on performance of the protections of main apparatus, which apply several digital relays based on DFT such as current differential relay, over voltage relay, over load relay, zero sequence over current relay, etc. It also introduces the uncorrected judgement of these relays in operation and promotes the improved method to enhance the performance.

关 键 词：傅里叶算法 数字式继电器 电力主设备 继电保护 

分 类 号：TM58[电气工程—电器]