| 改善系统频率稳定性的多直流功率紧急支援协调控制策略 |
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| 引用本文： | 许涛,吴雪莲,李兆伟,张剑云,郄朝辉,刘明松,方勇杰,张怡,王超,李威,庄侃沁.改善系统频率稳定性的多直流功率紧急支援协调控制策略[J].电力系统自动化,2018,42(22):69-77. |
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| 作者姓名： | 许涛 吴雪莲 李兆伟 张剑云 郄朝辉 刘明松 方勇杰 张怡 王超 李威 庄侃沁 |
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| 作者单位： | 国家电力调度控制中心, 北京市 100031,南瑞集团(国网电力科学研究院)有限公司, 江苏省南京市 211106; 国电南瑞科技股份有限公司, 江苏省南京市 211106,南瑞集团(国网电力科学研究院)有限公司, 江苏省南京市 211106; 国电南瑞科技股份有限公司, 江苏省南京市 211106,国家电力调度控制中心, 北京市 100031,南瑞集团(国网电力科学研究院)有限公司, 江苏省南京市 211106; 国电南瑞科技股份有限公司, 江苏省南京市 211106,国家电力调度控制中心, 北京市 100031,南瑞集团(国网电力科学研究院)有限公司, 江苏省南京市 211106; 国电南瑞科技股份有限公司, 江苏省南京市 211106,国家电力调度控制中心, 北京市 100031,国家电力调度控制中心, 北京市 100031,南瑞集团(国网电力科学研究院)有限公司, 江苏省南京市 211106; 国电南瑞科技股份有限公司, 江苏省南京市 211106,国家电网公司华东分部, 上海市 200120 |
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| 基金项目： | 国家电网公司科技项目“大型能源基地多直流、交直流送出系统网源协同频率稳定控制技术研究” |
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| 摘 要： | 直流功率紧急支援能够有效改善多直流馈入电网在大功率缺额故障扰动后的系统频率稳定性。文中分析了直流功率紧急支援的原理，提出了一种综合考虑直流过负荷能力、直流运行工况和交流输电能力的单回直流实时可提升功率的估算方法。基于交流电网的安全稳定约束，提出了区域电网最大可支援能力的计算方法和“同送出同馈入”的多回直流实际支援量的协调优化算法。在此基础上，提出了改善系统频率稳定性的多直流功率紧急支援的协调控制方案，并在华东多直流馈入电网中进行了仿真验证。
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| 关 键 词： | 直流功率紧急支援 频率稳定性 多直流馈入系统 过负荷能力 |
| 收稿时间： | 2018/6/3 0:00:00 |
| 修稿时间： | 2018/10/9 0:00:00 |
Coordinated Control Strategy of Multi-DC Emergency Power Support to Improve Frequency Stability of Power Systems |
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| XU Tao,WU Xuelian,LI Zhaowei,ZHANG Jianyun,QIE Zhaohui,LIU Mingsong,FANG Yongjie,ZHANG Yi,WANG Chao,LI Wei and ZHUANG Kanqin.Coordinated Control Strategy of Multi-DC Emergency Power Support to Improve Frequency Stability of Power Systems[J].Automation of Electric Power Systems,2018,42(22):69-77. |
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| Authors: | XU Tao WU Xuelian LI Zhaowei ZHANG Jianyun QIE Zhaohui LIU Mingsong FANG Yongjie ZHANG Yi WANG Chao LI Wei and ZHUANG Kanqin |
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| Affiliation: | National Electric Power Dispatching and Control Center, Beijing 100031, China,NARI Group Corporation(State Grid Electric Power Research Institute), Nanjing 211106, China; NARI Technology Co. Ltd., Nanjing 211106, China,NARI Group Corporation(State Grid Electric Power Research Institute), Nanjing 211106, China; NARI Technology Co. Ltd., Nanjing 211106, China,National Electric Power Dispatching and Control Center, Beijing 100031, China,NARI Group Corporation(State Grid Electric Power Research Institute), Nanjing 211106, China; NARI Technology Co. Ltd., Nanjing 211106, China,National Electric Power Dispatching and Control Center, Beijing 100031, China,NARI Group Corporation(State Grid Electric Power Research Institute), Nanjing 211106, China; NARI Technology Co. Ltd., Nanjing 211106, China,National Electric Power Dispatching and Control Center, Beijing 100031, China,National Electric Power Dispatching and Control Center, Beijing 100031, China,NARI Group Corporation(State Grid Electric Power Research Institute), Nanjing 211106, China; NARI Technology Co. Ltd., Nanjing 211106, China and East China Branch of State Grid Corporation of China, Shanghai 200120, China |
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| Abstract: | Emergency DC power support can effectively improve the frequency stability of multi-infeed DC power grids after the disturbance of high-power shortage fault. This paper analyzes the principle of emergency DC power support. Considering the DC overload capacity, DC operation conditions and AC transmission capacity, a method is proposed to estimate the real-time boosting power of single DC line. Based on the safety and stability constraints of DC power transmission network, this paper proposes a calculation method of calculation the maximum supportability of the regional power grid and the coordination and optimization algorithm of the actual support amount of DC lines with the same sending-ends and same receiving-ends. On this basis, the frequency coordinated control scheme of multi-DC power emergency support is proposed and simulated in the East China multi-infeed power grid. |
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| Keywords: | emergency DC power support frequency stability multi-infeed DC system overload capacity |
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