基于多源信息融合的配电网继电保护灵敏度校验系统

Sensitivity Verification System of Relay Protection in Distribution Network Based on Multi-source Information Fusion

提出基于多源信息融合的配电网继电保护灵敏度校验系统,保障配电网稳定安全运行。系统数据层利用多个电能传感器采集配电网继电保护装置的电压、电流等故障录波数据,经服务层保护管理机打包、解包处理故障录波数据后,通过通信服务器将多传感器采集数据传输至应用层,录波分析故障录波数据后,通过采用D-S证据理论的多源信息融合模块获取配电网故障诊断结果,整定计算模块依据故障诊断结果完成继电保护定值计算以及灵敏度校验。实验说明,多源信息融合可提升该系统故障诊断精度,该系统可有效校验配电网继电保护灵敏性,保障配电网安全稳定运行。

The sensitivity verification system of relay protection in distribution network based on multi-source information fusion is proposed to ensure the stable and safe operation of distribution network.The system data layer uses multiple electric energy sensors to collect fault recording data such as voltage and current of relay protection devices in the distribution network.After the of protection manager service layer packages and unpacks the fault recording data,the multi-sensor collected data is trans-mitted to the application layer through the communication server.After recording and analyzing the fault recorder data,the dis-tribution network fault diagnosis results are obtained through the multi-source information fusion module using D-S evidence theory.The setting calculation module completes the relay protection setting calculation and sensitivity verification according to the fault diagnosis results.The experiment shows that multi-source information fusion can improve the accuracy of fault diag-nosis of the system,and the system can effectively verify the sensitivity of relay protection of distribution network and ensure the safe and stable operation of distribution network.