浙江电力

2019, v.38;No.282(10) 12-19

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含分布式电源的交直流混合配电网潮流分析
Flow Analysis of Hybrid AC/DC Distribution Network with Distributed Generation

郑眉,陆翌,许烽,倪晓军,孟显海
ZHENG Mei,LU Yi,XU Feng,NI Xiaojun,MENG Xianhai

摘要(Abstract):

随着电力电子技术的不断发展,直流输出型分布式电源不断接入不同等级配电系统,伴随着交直流敏感负荷数量的显著增加,急需研究一种满足分布式电源接入的交直流混合配电网潮流分析方法。针对具有多端点结构的交直流混合配电网,通过分析VSC(电压源变换器)损耗和直流、交流线路损耗对配电系统的影响,并考虑因换流站数量增加所导致的不可忽略的换流站损耗,提出混合交直流配电网连续潮流计算方法,建立混合交直流配电网模型,设计2种不同的混合交直流配电网的拓扑结构,并对其进行仿真分析。仿真结果表明,考虑网络损耗和网络内换流器数量较多的变换器损耗,特别是考虑到交流或直流母线占主导地位的网络,会导致网络间的潮流解和功率转移有很大的不同。
With the continuous development of power electronics technology, DC output-type distributed generation is continuously connected to distribution network systems of different grades, and the number of ACDC sensitive loads increases significantly. Therefore, it is urgent to study an AC-DC hybrid power distribution network power flow analysis method that satisfies the access of distributed power supply. AC/DC hybrid power distribution network with multiple endpoints structure, this paper, by analyzing the influence of VSC(voltage source converter) loss and the DC/AC loss on distribution system and considering converter station loss that cannot be ignored due to converter station increase, proposes a hybrid AC/DC distribution network power flow calculation method, establishes a hybrid AC/DC power distribution network model and constructs topology structures of two hybrid AC/DC distribution networks; besides, it also analyzes and simulates the structures. The result shows that the converter loss that considers much about network loss and converter number, especially considers the AC/DC bus dominant network, the power flow solution and power transfer between networks are different.

关键词(KeyWords): 分布式电源;交直流敏感负荷;混合交直流配电网;潮流分析;电压源换流器损耗
distributed generation;AC/DC sensitive load;hybrid AC/DC distribution network;flow analysis;VSC loss

Abstract:

Keywords:

基金项目(Foundation): 国网浙江省电力有限公司科技项目(5211DS170016)

作者(Author): 郑眉,陆翌,许烽,倪晓军,孟显海
ZHENG Mei,LU Yi,XU Feng,NI Xiaojun,MENG Xianhai

DOI: 10.19585/j.zjdl.201910003

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