| 引用本文: | 李国庆,王浩翔,王振浩,王鹤,房尧熠.含直流潮流控制器的交直流混合系统多目标最优潮流研究[J].电力系统保护与控制,2019,47(15):124-132.[点击复制] |
| LI Guoqing,WANG Haoxiang,WANG Zhenhao,WANG He,FANG Yaoyi.Study of multi-objective optimal power flow of AC-DC hybrid system with DC power flow controller[J].Power System Protection and Control,2019,47(15):124-132[点击复制] |
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| 摘要: |
| 直流潮流控制器是直流电网潮流分析与控制领域的研究热点，一般安装在枢纽换流站的直流母线处，能够有效提高直流电网的潮流控制自由度。在交直流混合系统中加入直流潮流控制器并在直流电网中建模，把网络损耗、静态电压稳定指标和电压偏移量作为优化目标进行潮流优化，依据优化结果协调换流站和直流潮流控制器分步调整交直流系统潮流，实现了换流站和直流潮流控制器的协调控制。利用所提出的协调控制方法可使系统从某个状态安全稳定地过渡到另一个状态，在提升系统经济效益的同时，也可以减小网络损耗、电压偏移量，提高静态电压稳定裕度。利用Matlab对混合系统进行潮流优化，以一个五端混合系统为例，验证该方法的有效性。 |
| 关键词: 潮流控制自由度 直流潮流控制器 多目标潮流 协调控制 |
| DOI：10.7667/PSPC20191517 |
| 投稿时间：2018-08-29修订日期：2018-10-28 |
| 基金项目:国家自然科学基金项目资助(51677023) |
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| Study of multi-objective optimal power flow of AC-DC hybrid system with DC power flow controller |
| LI Guoqing,WANG Haoxiang,WANG Zhenhao,WANG He,FANG Yaoyi |
| (School of Electrical Engineering, Northeast Electric Power University, Jilin 132012, China;Tonghua Power Supply Company, State Grid Jilin Electric Power Co., Ltd., Tonghua 134001, China) |
| Abstract: |
| DC power flow controller is a research hotspot in the field of DC power flow analysis and control, and it is generally installed on the DC bus at the hub converter station, which can effectively improve the power flow control degree of DC power grid. The DC power flow controller is added to the AC-DC hybrid system to establish the model in the DC grid. The network loss, static voltage stability index and voltage offset are optimized as the optimization targets, and the converter station and the DC power flow controller are coordinated according to the optimization results. The controller adjusts the power flow of AC-DC system step by step, realizing the coordination control of the converter station and DC power flow controller. Using the proposed coordinated control method, the system can be safely and stably shifted from one state to another. While improving the economic benefits of the system, it can also reduce the network loss and voltage offset and increase the static voltage stability margin. Using Matlab to optimize the power flow of the hybrid system and taking a five-terminal hybrid system as an example, the effectiveness of the proposed method is verified. This work is supported by National Natural Science Foundation of China (No. 51677023). |
| Key words: power flow control degree DC Power Flow Controller (DCPFC) multi-objective power flow coordination control |
