| 含DC-DC变换器的直流电网拓扑结构及其运行控制 |
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| 引用本文： | 姚良忠,鲁双杨,文劲宇,孙蔚,苗璐,林卫星. 含DC-DC变换器的直流电网拓扑结构及其运行控制[J]. 电力系统自动化, 2016, 40(11): 80-86 |
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| 作者姓名： | 姚良忠 鲁双杨 文劲宇 孙蔚 苗璐 林卫星 |
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| 作者单位： | 中国电力科学研究院, 北京市 100192,强电磁工程与新技术国家重点实验室(华中科技大学), 湖北省武汉市 430074,强电磁工程与新技术国家重点实验室(华中科技大学), 湖北省武汉市 430074,中国电力科学研究院, 北京市 100192,强电磁工程与新技术国家重点实验室(华中科技大学), 湖北省武汉市 430074,强电磁工程与新技术国家重点实验室(华中科技大学), 湖北省武汉市 430074 |
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| 基金项目： | 国家自然科学基金资助项目(51261130484)；国家电网公司专项研究项目(国家电网科研2013-304号) |
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| 摘 要： | 结合中国陆上和海上新能源地域分布的特点,给出了一种适用于中国未来直流电网发展趋势的含DC-DC变换器的多电压等级直流电网拓扑结构,并对该拓扑结构的特点和优势进行了分析,提出了相应的系统启动、快速潮流分配、直流故障隔离和应对换流站退出运行的控制策略。通过PSCAD/EMTDC仿真软件建立了该直流电网的仿真模型,并对所研究的运行工况进行了仿真分析。仿真结果验证了所提出的控制策略可确保直流电网灵活可靠运行。
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| 关 键 词： | 直流输电；直流电网；DC-DC变换器；新能源接入；潮流控制；直流故障隔离 |
| 收稿时间： | 2015-06-04 |
| 修稿时间： | 2016-04-27 |
Topology and Control of DC Grid with DC-DC Converters |
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| YAO Liangzhong,LU Shuangyang,WEN Jinyu,SUN Wei,MIAO Lu and LIN Weixing. Topology and Control of DC Grid with DC-DC Converters[J]. Automation of Electric Power Systems, 2016, 40(11): 80-86 |
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| Authors: | YAO Liangzhong LU Shuangyang WEN Jinyu SUN Wei MIAO Lu LIN Weixing |
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| Affiliation: | China Electric Power Research Institute, Beijing 100192, China,State Key Laboratory of Advanced Electromagnetic Engineering and Technology(Huazhong University of Science and Technology), Wuhan 430074, China,State Key Laboratory of Advanced Electromagnetic Engineering and Technology(Huazhong University of Science and Technology), Wuhan 430074, China,China Electric Power Research Institute, Beijing 100192, China,State Key Laboratory of Advanced Electromagnetic Engineering and Technology(Huazhong University of Science and Technology), Wuhan 430074, China and State Key Laboratory of Advanced Electromagnetic Engineering and Technology(Huazhong University of Science and Technology), Wuhan 430074, China |
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| Abstract: | This paper presents a topology of a DC grid with multi-voltage levels which is suitable for the system with large scale offshore and onshore distributed renewable generations in China. The advantages of the topology are analyzed. Control strategies for starting-up, fast power flow distribution, DC fault isolating and converter station tripping off are proposed. The simulation model of the DC grid is built using the PSCAD/EMTDC software tool. Simulation results validate the effectiveness of the proposed control strategies for flexible and reliable operation of the presented DC grid. This work is supported by National Natural Science Foundation of China (No. 51261130484) and State Grid Corporation of China (No. 2013-304). |
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| Keywords: | DC transmission DC grid DC-DC converter renewable generation integration power flow control DC fault isolation |
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