新建变电站的监控信息验收系统研究
2020-05-11宫德锋王振华柴颖张桂芹郝福友
宫德锋 王振华 柴颖 张桂芹 郝福友



摘 要: 近年来,随着二级变电站新建需求的提升,如何对设备进行全面管理不仅对于变电站监视和规划目的特别有用,而且对于设备错误检测的测量也是特别有用的;同时通过监控信息可对负荷进行预测,可帮助电力公司作出关于电量采购的决策。短期负荷预测(Short Term Load Forecasting,STLF)要在从一小时到一周的范围内预测电力负荷,从而可判断变电站运行是否正常。为此提出了一种新的基于STLF的方法来解决新建变电站在验收过程中通过监控信息手段检测测量设备引入的增益和偏移误差,并通过实验验证了该方法可获取不同的增益和偏移误差。
关键词: 变电站; 设备错误检测; 短期负荷预测; 监控信息验收
中图分类号: TP393 文献标志码: A
Research on Monitoring Information Acceptance System of New Substations
GONG Defeng1, WANG Zhenhua1, CHAI Ying1, ZHANG Guiqin1, HAO Fuyou2
(1. State Grid Tai An power supply Co. Ltd., Taian 271000; 2. Shandong AnXinYuan
Information Technology Co. Ltd., Jinan 250100)
Abstract: In recent years, with the increase of new requirements for secondary substations, how to comprehensively manage equipment is not only useful for substation monitoring and planning purposes, but also for the measurement of equipment error detection. At the same time, the load can be monitored by monitoring information. Forecasting can help power companies make decisions about power purchases. Short term load forecasting (STLF) allows the power load to be predicted from one hour to one week to determine whether the substation is operating normally. In this paper, a new STLF-based method is proposed to solve the gain and offset error introduced by the monitoring equipment during the acceptance process of a new substation. The experimental results show that the method can obtain different gain and offset errors.
Key words: Substation; Equipment error detection; Short term load forecasting; Monitoring information acceptance
0 引言
在過去的几十年中,通信和信息技术的重大进步加速了电力系统中新的宽带通信技术的开发和引入,这一事实促进了一级和二级变电站的电力系统自动化,IEC 61850变电站自动化全球标准的制定推进了电子系统自动化的快速发展。
如今,电子仪器传感器(Electronic Instrumental Transducer,EIT)的发展以及通信和信息技术的重要性正逐渐被变电站自动化系统所接受。不同的EIT执行必要的电流和电压测量,用于控制和保护变电站运行,然而,这种方法带来的问题是可能会受到信号采集过程中错误测量的负面影响。另一方面,负载曲线以及电流消耗与其历史测量数据强烈相关,该结果取决于不同的变量,例如经济因素和环境数据等。……
