| 特高压直流闭锁引发送端电网过频的系统保护方案 |
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| 引用本文： | 邵广惠,侯凯元,王克非,夏德明,刘明松,刘永奇.特高压直流闭锁引发送端电网过频的系统保护方案[J].电力系统自动化,2018,42(22):26-31. |
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| 作者姓名： | 邵广惠 侯凯元 王克非 夏德明 刘明松 刘永奇 |
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| 作者单位： | 国家电网有限公司东北分部, 辽宁省沈阳市 110180,国家电网有限公司东北分部, 辽宁省沈阳市 110180,国家电网有限公司东北分部, 辽宁省沈阳市 110180,国家电网有限公司东北分部, 辽宁省沈阳市 110180,国家电网有限公司, 北京市 100031,国家电网有限公司东北分部, 辽宁省沈阳市 110180 |
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| 摘 要： | 针对无配套电源的特高压直流高比例外送电网面临的运行风险，设计了抵御直流闭锁故障下电网过频风险的系统保护方案。提出了涵盖送端电网风、水、火等电源的系统保护双层结构；研究了面向多对象的实时信息通信复接技术，以满足主站和多个执行站实时通信的需求；根据不同类型电源的特点及对电网安全运行的影响，提出了直流调制和风、水、火等电源全局优化控制策略。基于实际电网仿真验证了所提系统保护方案的有效性和实用性。
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| 关 键 词： | 系统保护 特高压直流 频率稳定 信息通信 |
| 收稿时间： | 2018/5/3 0:00:00 |
| 修稿时间： | 2018/10/17 0:00:00 |
System Protection Scheme for Over Frequency of Sending-end Power Grid Caused by Ultra-HVDC blocking |
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| SHAO Guanghui,HOU Kaiyuan,WANG Kefei,XIA Deming,LIU Mingsong and LIU Yongqi.System Protection Scheme for Over Frequency of Sending-end Power Grid Caused by Ultra-HVDC blocking[J].Automation of Electric Power Systems,2018,42(22):26-31. |
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| Authors: | SHAO Guanghui HOU Kaiyuan WANG Kefei XIA Deming LIU Mingsong and LIU Yongqi |
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| Affiliation: | Northeast Branch of State Grid Corporation of China, Shenyang 110180, China,Northeast Branch of State Grid Corporation of China, Shenyang 110180, China,Northeast Branch of State Grid Corporation of China, Shenyang 110180, China,Northeast Branch of State Grid Corporation of China, Shenyang 110180, China,State Grid Corporation of China, Beijing 100031, China and Northeast Branch of State Grid Corporation of China, Shenyang 110180, China |
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| Abstract: | A system protection scheme against operation risk faced by the ultra-high voltage direct current(HVDC)without corresponding direct power supply is designed, which can resist the over-frequency risk under the HVDC blocking fault. Double-layer structure of system protection covering wind, hydro and thermal power of sending-end power grid is put forward. The multi-object oriented real-time information communication multiplexing technology is studied to meet the communication requirements between master station and multiple execution stations. According to the characteristics of different types of power and its influence on the safe operation of power grid, the DC modulation and global optimization control strategy of wind, hydro and thermal power is presented. The simulation on a real power system shows the effectiveness and practicability of the proposed system protection strategy. |
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| Keywords: | system protection ultra-high voltage direct current(HVDC) frequency stability information communication |
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