电工技术学报  2019, Vol. 34 Issue (zk2): 646-653    DOI: 10.19595/j.cnki.1000-6753.tces.L80300
电力系统 |
无功电压优化对新能源消纳的影响
刘华志1, 李永刚1, 王优胤2, 张晓天2, 曹南君2
1. 新能源电力系统国家重点实验室(华北电力大学) 保定 071000;
2. 国网辽宁省电力有限公司经济技术研究院 沈阳 110000
Influence about Reactive Power Voltage Optimization on the Dissipation of New Energy
Liu Huazhi1, Li Yonggang1, Wang Youyin2, Zhang Xiaotian2, Cao Nanjun2
1. State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources North China Electric Power University Baoding 071000 China;
2. Economic and Technology Research Institute of State Grid Liaoning Electric Power Shenyang 110000 China
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摘要 大规模风电和光伏接入电力系统将会加剧配电网节点的电压波动,而无功电压优化能有效改善系统的电压水平。该文首先对双馈风机的无功调节能力进行分析,建立了无功优化对配电网电压和新能源消纳的影响模型。考虑到风电和光伏等分布式电源存在一定的无功余量,具有一定无功调节能力,利用这些无功余量进行无功优化,将节点电压和额定电压偏差的方差作为目标,建立了无功电压的优化模型。在常规粒子群算法基础上,使用智能粒子数控制提高计算效率。最后,通过IEEE 33节点系统对模型进行了多场景仿真分析,结果表明所提出的无功电压优化模型可以起到改善系统电压质量,提高消纳能力的作用。在高渗透率场景下,系统可以利用风电光伏的无功余量对系统电压水平进行优化,在提高系统电压水平的同时保证新能源的消纳。新能源接入的位置不同,无功电压优化对其消纳的影响也不同。
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刘华志
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关键词 配电网无功电压优化新能源消纳智能粒子数控制粒子群算法    
Abstract:Large-scale wind power and photovoltaic access to the power system will exacerbate the voltage fluctuations of the distribution network node, and the optimization of reactive voltage can effectively improve the voltage level of the system. The reactive power adjustment capability of the doubly-fed fan is analyzed firstly, and the influence model of reactive power optimization on distribution network voltage and new energy consumption is established. The distributed power sources such as wind power and photovoltaic have a certain amount of reactive power. In this paper, the margin reactive power optimization was used to optimize the reactive power, and the variance of the node voltage and the rated voltage deviation was taken as the target. Based on the conventional particle swarm optimization algorithm, intelligent particle number control was applied to improve the computational efficiency. Finally, the multi-scenario simulation analysis of the model is carried out by the IEEE 33 node system. The results show that the proposed reactive voltage optimization model can ameliorate the system voltage quality and improve the consumption capacity. In the high-permeability scenario, the system can use the reactive power of the wind power photovoltaic to optimize the system voltage level, and improve the system voltage level while ensuring the consumption of new energy. The location of new energy access affects the effect of reactive voltage optimization.
Key wordsDistribution network    reactive voltage optimization    new energy consumption    intelligent particle number control    PSO   
收稿日期: 2018-07-01      出版日期: 2020-01-02
PACS: TM71  
作者简介: 刘华志 男,1994年生,硕士研究生,研究方向为新能源消纳、多能源灵活性调度。E-mail: lhzncepu2018@outlook.com;李永刚 男,1967年生,教授,博士生导师,研究方向为大型电机系统及其故障诊断、多能源系统优化调度。E-mail: lygzxm0@163.com(通信作者)
引用本文:   
刘华志, 李永刚, 王优胤, 张晓天, 曹南君. 无功电压优化对新能源消纳的影响[J]. 电工技术学报, 2019, 34(zk2): 646-653. Liu Huazhi, Li Yonggang, Wang Youyin, Zhang Xiaotian, Cao Nanjun. Influence about Reactive Power Voltage Optimization on the Dissipation of New Energy. Transactions of China Electrotechnical Society, 2019, 34(zk2): 646-653.
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