付红军, 孙冉, 赵华, 李海波, 江坷滕, 雷一, 王睿喆. 计及机组有功与无功耦合特性的集群新能源电站无功优化[J]. 现代电力, 2022, 39(4): 422-430. DOI: 10.19725/j.cnki.1007-2322.2021.0159
引用本文: 付红军, 孙冉, 赵华, 李海波, 江坷滕, 雷一, 王睿喆. 计及机组有功与无功耦合特性的集群新能源电站无功优化[J]. 现代电力, 2022, 39(4): 422-430. DOI: 10.19725/j.cnki.1007-2322.2021.0159
FU Hongjun, SUN Ran, ZHAO Hua, LI Haibo, JIANG Keteng, LEI Yi, WANG Ruizhe. Reactive Power Optimization of Clustered New Energy Power Stations Considering Active and Reactive Coupling Characteristics of Generating Units[J]. Modern Electric Power, 2022, 39(4): 422-430. DOI: 10.19725/j.cnki.1007-2322.2021.0159
Citation: FU Hongjun, SUN Ran, ZHAO Hua, LI Haibo, JIANG Keteng, LEI Yi, WANG Ruizhe. Reactive Power Optimization of Clustered New Energy Power Stations Considering Active and Reactive Coupling Characteristics of Generating Units[J]. Modern Electric Power, 2022, 39(4): 422-430. DOI: 10.19725/j.cnki.1007-2322.2021.0159

计及机组有功与无功耦合特性的集群新能源电站无功优化

Reactive Power Optimization of Clustered New Energy Power Stations Considering Active and Reactive Coupling Characteristics of Generating Units

  • 摘要: 随着风电、光伏等新能源并网规模持续扩大和特高压直流等设备的接入,电力系统逐步呈现出高度电力电子化特征,为无功控制带来了新需求和新挑战。针对这一问题,首先介绍了双馈风机、直驱风机和光伏的动态无功调节能力模型,其次提出了考虑主动降有功的无功调节控制策略,并建立了新能源电站集群层面考虑有功的无功优化模型。然后采用二阶锥凸松弛算法和分段线性化算法相结合,提出了混合整数和二阶锥优化的求解方法,有效解决了模型的非线性非凸及混合整数规划求解的难题。最后基于某实际新能源集群并网系统进行仿真分析。仿真结果表明采用考虑主动降有功的无功调节控制策略能够显著提升系统的无功控制能力,改善电压控制效果,提高系统经济性,验证了所提模型的正确性和经济价值。

     

    Abstract: Along with the increasingly grid-connected scale of such new energy as wind power stations and photovoltaic (abbr. PV) stations and the grid-connection of HVDC equipments, the power grid gradually presents the feature of high degree power electronization, and it brings new demands and new challenges to reactive power control. In allusion to this problem, firstly, the dynamic reactive power regulation ability model of doubly fed induction generator (abbr. DFIG), direct-driven wind turbine (abbr. DDWT) and PV were presented. Secondly, a reactive power control strategy, in which the active power was proactively considered to reduce, was proposed, and a reactive power optimization model, in which the active power was considered at the clustered level of new energy stations, was established. Thirdly, by means of combining the Second-order cone-convex relaxation algorithm with piecewise linearization algorithm, a solving method for mixed integer and second-order cone optimization was put forward, by use of this method the difficult nonlinear nonconvex and mixed integer programming problems in the established model were effectively solved. Finally, the simulation-based analysis on the grid-connection system of a certain practical clustered new energy power stations was performed. Simulation results show that adopting this reactive power regulation and control strategy, in which the active power is proactively considered to reduce, the reactive power control ability of the system can be evidently enhanced, and the voltage control effect can be improved, the economy of the system can be ameliorated as well, thus, both the correctness and the economic value of the established model were verified.

     

/

返回文章
返回