电气技术  2021, Vol. 22 Issue (5): 17-23    DOI:
研究与开发 |
基于多端柔性直流输电系统潮流控制策略的交直流电网合环模型研究
蔡建逸1, 林裕新1, 白浩2
1.广东电网有限责任公司汕头供电局,广东 汕头 515000;
2.南方电网科学研究院,广州 510663
Research on loop closing model of AC-DC power grid based on voltage source converter multi-terminal DC power flow control strategy
CAI Jianyi1, LIN Yuxin1, BAI Hao2
1. Shantou Power Supply Bureau of Guangdong Power Grid Co., Ltd, Shantou, Guangdong 515000;
2. Electric Power Research Institute, CSG, Guangzhou 510663
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摘要 对于多端直流输电与交流混合运行电网,在电网合环后可能因多端柔性直流输电(VSC-MTDC)系统潮流控制策略导致潮流迂回,进而造成设备过载或跳闸,严重威胁电网的安全运行。本文基于南澳AC-DC混合运行电网的合环操作案例,分析启动多端柔性直流输电系统潮流控制策略前后的两种场景状态,以此建立合环电流约束的AC-DC混合运行电网合环模型,证明潮流控制策略是影响安全合环的关键因素,在此基础上确定安全合环的边界参数,并提出有效的合环风险管控策略。
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关键词 交直流混合运行合环潮流控制电流约束边界    
Abstract:For the voltage source converter multi-terminal DC (VSC-MTDC) and AC hybrid operation power grid, the voltage source converter multi-terminal DC system power flow control strategy may lead to power flow detour when the power grid is closed, and then lead to the risk of equipment overload or tripping, which seriously threatens the safe operation of the power grid. This paper presents a typical AC-DC hybrid operation case of intelligent distribution network, analyzes the two scenarios before and after starting the power flow control strategy of voltage source converter multi-terminal DC system, and establishes the closed-loop model of AC-DC hybrid operation power grid with closed-loop current constraint. It is proved that the power flow control strategy is the key factor affecting the loop closing. On this basis, the boundary parameters of the security loop are determined and effective risk management and control strategies are proposed.
Key wordsAC-DC hybrid operation    loop closing    power flow control    current constraint    boundary   
收稿日期: 2020-10-09     
作者简介: 蔡建逸(1987—),男,本科,工程师,主要研究方向为智能调度和配网自动化。
引用本文:   
蔡建逸, 林裕新, 白浩. 基于多端柔性直流输电系统潮流控制策略的交直流电网合环模型研究[J]. 电气技术, 2021, 22(5): 17-23. CAI Jianyi, LIN Yuxin, BAI Hao. Research on loop closing model of AC-DC power grid based on voltage source converter multi-terminal DC power flow control strategy. Electrical Engineering, 2021, 22(5): 17-23.
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https://dqjs.cesmedia.cn/CN/Y2021/V22/I5/17