电力系统自动化Issue(23)：108-113,6.DOI:10.7500/AEPS20140115001
继电保护相关二次回路的在线状态检测技术
On-line State Detection Technology of Relay Protection Relevant Secondary Circuits
摘要
Abstract
The critical technology of condition-based maintenance of relay protection is analyzed,and the on-line state detection method of main relay protection secondary circuits such as AC secondary circuit,switching value input secondary circuit and breaker operating secondary circuit are studied.For secondary AC circuit on-line status detection,a solution of making comparative analysis between its AC input value and reference value is proposed.Specific on-line state detection schemes each for the single and dual configured relay protection devices are proposed,respectively.As for on-line status detection schemes of switching value input secondary circuit,an abnormal status detecting scheme using microcomputer is proposed for certain types of switching value input secondary circuit.With respect to on-line status detection of the breaker operating secondary circuit,a detailed state detecting circuit is designed,and the proposed switch on/off export contact reliability detecting method based on double relay contacts in series is analyzed at length.The proposed method is simple and practical,and can be better to realize the real-time on-line detection of switch on/off export contact action. This work is supported by Special Fund of Key Science and Technology Proj ects of State Grid Corporation of China.关键词
继电保护/二次回路/状态检修/状态检测/在线检测Key words
relay protection/secondary circuit/condition-based maintenance/state detection/on-line detection引用本文复制引用
叶远波,孙月琴,黄太贵,陈玉兰,王正航,宋斌..继电保护相关二次回路的在线状态检测技术[J].电力系统自动化,2014,(23):108-113,6.基金项目
国家电网公司重大科技项目“继电保护状态检修智能决策系统开发与应用” （）
国家实用新型专利(ZL201220681555.3, ZL201220534801.2,ZL201220681532.2)。 （ZL201220681555.3, ZL201220534801.2,ZL201220681532.2）
