摘要
毫秒级精准负荷控制系统将切负荷控制方式从传统的集中切变电站负荷线路方式转变为快速精准控制用户可中断分支负荷线路。在分析现有终端接入通信技术的基础上,提出了系统的总体架构,即控制主站层、控制子站层、终端用户接入层,描述了各层级的功能定义,给出了计及直流故障落点位置和负荷分层的整体最小欠切控制策略;详细介绍了系统实现所需的关键技术:STM-1接口(155M接口)技术、多用户共享2M通道接入技术、模拟大规模可中断负荷批量切除及有序恢复的试验技术等。该技术方案已应用于江苏电网精准切负荷一期、二期工程中,现场实切试验表明满足运行要求。
The millisecond precision load control system transforms the load-shedding control mode from the traditional centralized power cut-off of the substation load lines to the fast and accurate control of the user-intemlptible branch load- carrying lines. Based on the analysis of the existing terulinal access communication technology, the overall structure of the system is proposed, which consists of the control master station layer, the control sub station layer and the end user access layer, describes the function definition of each level, and also gives the overall minimum-cut control strategy in consideration of the DC fault position and the load stratification. The key technologies needed in the system implementation are introduced in detail： the STM-1 communication interface technology, the 2M channel access technology of multiuser sharing, the test teehnology of simulating the mass resection of large-scale intetTuptible load and the sequential recovery. The technical scheme proposed in this paper has been applied in the first and second phase project of the precise load shedding in Jiangsu Power Grid, and the field test shows that it satisfies the running requirements.
作者
任建锋
颜云松
罗剑波
司庆华
陶翔
郭勋
万芳茹
REN Jianfeng;YAN Yunsong;LUO Jianbo;SI Qinghua;TAO Xiang;GUO Xun;WAN Fangru(NARI Technology Co., Ltd., Nanjing 211106, China)
出处
《电力工程技术》
2018年第1期45-50,共6页
Electric Power Engineering Technology
基金
国家电网公司科技项目"面向特高压交直流大受端电网的大规模负荷精准协调互动控制技术研究"
关键词
毫秒级
精准负荷控制
可中断负荷
millisecond-level
precisive load control
interruptible load
