文章摘要
吴红斌,杨超,陈煜,等.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. DOI: 10.7500/AEPS20170815011.
WU Hongbin,YANG Chao,CHEN Yu, et al.VSC Based Power Flow Calculation of Multi-terminal DC Distribution Network[J].Automation of Electric Power Systems,2018,42(11):79-85. DOI: 10.7500/AEPS20170815011.
基于电压源型换流器的多端直流配电网潮流计算
VSC Based Power Flow Calculation of Multi-terminal DC Distribution Network
DOI:10.7500/AEPS20170815011
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
KeyWords: voltage source converter  multi-terminal DC distribution network  power flow calculation  distributed generator  control strategy  automatic search
上网日期:2018-05-04
基金项目:国家重点研发计划资助项目(2016YFB0900400)
作者单位E-mail
吴红斌 合肥工业大学电气与自动化工程学院, 安徽省合肥市 230009 hfwuhongbin@163.com 
杨超 合肥工业大学电气与自动化工程学院, 安徽省合肥市 230009  
陈煜 国网安徽省电力公司经济技术研究院, 安徽省合肥市230022  
王刘芳 国网安徽省电力公司电力科学研究院, 安徽省合肥市 230601  
徐斌 国网安徽省电力公司电力科学研究院, 安徽省合肥市 230601  
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。
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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