基于广域同步数据的就地化保护在线分析方法  

On-line analysis method of installation protection based on wide-area synchronous data

作　　者：宋福海 翟博龙 唐志军 SONG Fuhai;ZHAI Bolong;TANG Zhijun(State Grid Fujian Electric Power Co.,Ltd.,Fuzhou 350003,China;Electric Power Research Institute of State Grid Fujian Electric Power Co.,Ltd.,Fuzhou 350007,China)

机构地区：[1]国网福建省电力有限公司,福建福州350003 [2]国网福建省电力有限公司电力科学研究院,福建福州350007

出　　处：《电力系统保护与控制》2020年第18期156-163,共8页Power System Protection and Control

基　　金：国家电网公司科技项目资助(521304170028);国网福建省电力有限公司科技项目资助(521304180013)。

摘　　要：为了及时准确识别就地化系统中进行误操作的保护装置,以保障电力系统运行安全,提出了一种基于广域同步数据的就地化保护决策实时分析方法。根据网络拓扑结构选定测量节点并对就地化保护同步信号进行检测,基于广域同步数据计算保护指标,针对过电流保护、距离保护和方向保护建立故障识别函数。基于EMTP对一个38节点系统进行仿真,针对四类故障情况计算故障分析函数,并通过函数计算结果验证保护决策正确性。结果表明,基于广域同步数据的就地化保护在线分析方法是有效和实用的。该方法能准确识别保护方案中的决策错误。To accurately identify,in a timely fashion,a protection device that has been mis-operated in the installation protection system,and in order to ensure the safety of power system operation,a real-time analysis method of installation protection decision based on wide-area synchronous data is proposed.A measurement node is selected according to the network topology and the installation protection synchronization signal is detected.Protection indices are calculated based on the wide-area synchronization data.A fault identification function is established for overcurrent,distance and direction protection.Based on EMTP,a 38-node system is simulated,and a fault analysis function is calculated for the four types of fault conditions,and the correctness of the protection decision is verified by the function calculation result.The results show that the online analysis method of installation protection based on wide-area synchronous data is effective and practical,and the method can accurately identify decision errors in protection schemes.

关 键 词：就地化保护 广域同步数据 故障识别 

分 类 号：TM73[电气工程—电力系统及自动化]