| 基于电压源型换流器的多端直流配电网潮流计算 |
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| 引用本文： | 吴红斌,杨超,陈煜,王刘芳,徐斌.基于电压源型换流器的多端直流配电网潮流计算[J].电力系统自动化,2018,42(11):79-85. |
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| 作者姓名： | 吴红斌 杨超 陈煜 王刘芳 徐斌 |
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| 作者单位： | 合肥工业大学电气与自动化工程学院;国网安徽省电力公司经济技术研究院;国网安徽省电力公司电力科学研究院 |
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| 基金项目： | 国家重点研发计划资助项目(2016YFB0900400) |
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| 摘 要： | 随着分布式电源及电力电子技术的发展,基于电压源型换流器(VSC)的直流配电网具有接入灵活、可靠性高、经济性好等优点。在详细分析了VSC稳态潮流模型的基础上,计及直流配电网的运行控制策略,研究了基于VSC的多端直流配电网潮流计算。在潮流计算过程中,采用节点关联矩阵对网络结构进行自动搜索和自动开环处理,提出了针对环网和下垂节点的统一功率修正方法,并考虑了VSC的功率限制及其控制方式的转换。最后,利用修改后的IEEE 14节点直流配电网算例,验证了所提直流配电网潮流计算方法的有效性和正确性。
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| 关 键 词： | 电压源型换流器 多端直流配电网 潮流计算 分布式电源 控制策略 自动搜索 |
| 收稿时间： | 2017/8/15 0:00:00 |
| 修稿时间： | 2018/5/6 0:00:00 |
VSC Based Power Flow Calculation of Multi-terminal DC Distribution Network |
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| WU Hongbin,YANG Chao,CHEN Yu,WANG Liufang and XU Bin.VSC Based Power Flow Calculation of Multi-terminal DC Distribution Network[J].Automation of Electric Power Systems,2018,42(11):79-85. |
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| Authors: | WU Hongbin YANG Chao CHEN Yu WANG Liufang and XU Bin |
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| Affiliation: | School of Electrical Engineering and Automation, Hefei University of Technology, Hefei 230009, China,School of Electrical Engineering and Automation, Hefei University of Technology, Hefei 230009, China,State Grid Anhui Economic Research Institute, Hefei 230022, China,State Grid Anhui Electric Power Research Institute, Hefei 230601, China and State Grid Anhui Electric Power Research Institute, Hefei 230601, China |
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| Abstract: | With the development of distributed generation and power electronic technology, DC distribution network based on voltage source converter(VSC)has many advantages, such as flexible access, high reliability and good economic efficiency. Based on the detailed analysis of the VSC steady-state power flow model, the power flow calculation of multi-terminal DC distribution network is studied through taking into account the operation control strategy of the DC distribution network. In the process of power flow calculation, it uses the node correlation matrix to search automatically the network structure and open automatically the looped network. It proposes a unified power correction method for looped network and droop node, and takes into account the power limitation and control mode conversion of VSC. With the modified IEEE 14-node DC distribution example system, it verifies the correctness and validity of the proposed power flow calculation method. |
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| Keywords: | voltage source converter multi-terminal DC distribution network power flow calculation distributed generator control strategy automatic search |
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