电力系统保护与控制2025，Vol.53Issue(14)：27-39,13.DOI:10.19783/j.cnki.pspc.240902
电力系统中的RTU测量非同步分析及其校正方法研究
Research on asynchronous analysis and correction method of RTU measurement in power systems
摘要
Abstract
The remote terminal unit(RTU)is the main measurement terminal in power grids,but its measurements lack a unified timestamp,has low update frequency,and is affected by uncertain transmission delays.In contrast,the phasor measurement unit(PMU)offers high synchronization and accuracy,and has become an important data acquisition device in modern power systems.To enable coordinated use of these two types of measurement data,this paper first summarizes the sources of RTU non-synchronous measurements and analyzes the influence of non-synchronous measurement data on state estimation and power flow calculation,with supporting verification results.A measurement data correlation analysis method is proposed based on energy interaction operator.The method applies the principle of maximum correlation among synchronous data and uses the accurate data from PMU to align RTU measurements,establishing a reference timestamp for hybrid measurement systems.Simulations on the IEEE 39-node grid and a real 83-node grid in Guangdong province show that the proposed method can effectively correct the non-synchronous measurement data and improve the accuracy of state estimation and power flow calculation.关键词
同步相量测量单元/远程终端单元/电力系统/状态估计/潮流计算/数据对齐Key words
phasor measurement unit/remote terminal unit/electric power system/state estimation/load flow calculation/data alignment引用本文复制引用
林俊杰,陈冰冰,郭宜通,宋文超,江昌旭,陆超..电力系统中的RTU测量非同步分析及其校正方法研究[J].电力系统保护与控制,2025,53(14):27-39,13.基金项目
This work is supported by the National Natural Science Foundation of China(No.52407087). 国家自然科学基金项目资助(52407087) （No.52407087）
新型电力系统运行与控制全国重点实验室开放基金课题资助(SKLD23KZ06) （SKLD23KZ06）
