电力系统保护与控制
電力繫統保護與控製
전력계통보호여공제
POWER SYSTM PROTECTION AND CONTROL
2013年
22期
149-153
,共5页
卜强生%宋亮亮%张道农%袁宇波%高磊%黄浩声
蔔彊生%宋亮亮%張道農%袁宇波%高磊%黃浩聲
복강생%송량량%장도농%원우파%고뢰%황호성
差动保护%智能变电站%分散采样%采样延时%采样同步%GPS对时
差動保護%智能變電站%分散採樣%採樣延時%採樣同步%GPS對時
차동보호%지능변전참%분산채양%채양연시%채양동보%GPS대시
differential protection%smart substation%distributed sampling%sampling delay%sampling synchronization%GPS time
阐述了线路差动保护和智能变电站中各类分散采样的差动保护产生同步问题的原因，说明了差动保护在工程现场进行采样同步测试的必要性。重点提出了基于GPS精确对时的差动保护采样同步性远程测试的方法及其具体实现方式，分析了该同步测试方法误差特性及产生原因。最终给出了500 kV智能变电站线路和主变差动保护的测试实例，验证了该方法应用的可行性。
闡述瞭線路差動保護和智能變電站中各類分散採樣的差動保護產生同步問題的原因，說明瞭差動保護在工程現場進行採樣同步測試的必要性。重點提齣瞭基于GPS精確對時的差動保護採樣同步性遠程測試的方法及其具體實現方式，分析瞭該同步測試方法誤差特性及產生原因。最終給齣瞭500 kV智能變電站線路和主變差動保護的測試實例，驗證瞭該方法應用的可行性。
천술료선로차동보호화지능변전참중각류분산채양적차동보호산생동보문제적원인，설명료차동보호재공정현장진행채양동보측시적필요성。중점제출료기우GPS정학대시적차동보호채양동보성원정측시적방법급기구체실현방식，분석료해동보측시방법오차특성급산생원인。최종급출료500 kV지능변전참선로화주변차동보호적측시실례，험증료해방법응용적가행성。
Firstly, the sampling synchronization problems of line differential protection and other distributed sampling differential protection in smart substations are analyzed. Then, the necessity of sampling synchronization test carried out in project site is explained. The remote test method of differential protection sampling synchronization based on GPS precise time is mainly proposed and its specific implementation is put forward. The error characteristics of this method and the cause of the error are analyzed in detail. At last, the sampling synchronization test cases of line differential protections and transformer differential protections in 500 kV smart substations are given, which verifies the feasibility of this method in practical applications.
