变电站状态估计的工程实践与效益分析  

Application and benefit analysis of substation state estimation

作　　者：李青芯[1] 汪德星[2] 孙宏斌[1] 吴文传[1] 王晶[1] 郭庆来[1] 张伯明[1] 

机构地区：[1]电力系统及发电设备控制和仿真国家重点实验室(清华大学电机系),北京100084 [2]华东电网有限公司华东电力调控分中心,上海200002

出　　处：《电力系统保护与控制》2012年第12期56-61,共6页Power System Protection and Control

基　　金：国家杰出青年科学基金资助(51025725)

摘　　要：基于零阻抗支路的变电站三相非线性状态估计在变电站内进行拓扑和量测错误的辨识,从而提高调度中心状态估计的可靠性和精度。报告了该技术在工程实现中的硬件配置、站域量测信息集成、与调度中心的互联、对时与周期选择等问题,并分析其效益,表明该技术具有高可靠性和通信量小的优点,并有效提高了对电网的监控能力和实时模型的可靠性。仿真实验及华东电网现场应用验证了该技术的有效性,满足实时在线应用需求,具有广阔的推广应用前景。A substation three-phase nonlinear state estimation method based on zero impedance branches helps to identify topology and analogy errors at substation level and accordingly enhances the control center＇s state estimation reliability and accuracy. Some issues during the practical implementation process of the technology are reported, such as the hardware configuration, measurement integration, the communication between substation and control center, time setting and period selection. The benefits of the proposed technology have also been analyzed. It is shown that this technology has high reliability and low burden on communication, and improves the ability of monitoring of power grids and the reliability of the real-time power network model significantly. The proposed technology is verified effective by both simulation experiments and field-site applications in East China Power Grid, and is well qualified for real-time online applications, which has broad popularization and application prospects.

关 键 词：变电站状态估计 坏数据辨识 拓扑错误辨识 效益分析 智能变电站 

分 类 号：TM76[电气工程—电力系统及自动化]