| 引用本文: | 王耀翔,戴朝波,杨志昌,胥国毅,毕天姝.考虑风电机组无功潜力的风电场无功电压控制策略[J].电力系统保护与控制,2022,50(24):83-90.[点击复制] |
| WANG Yaoxiang,DAI Chaobo,YANG Zhichang,XU Guoyi,BI Tianshu.Voltage control strategy for a wind farm considering the reactive capability of DFIGs[J].Power System Protection and Control,2022,50(24):83-90[点击复制] |
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| 摘要: |
| 双馈异步风电机组可以提供无功功率参与电网无功调节，但是其无功功率范围具有不确定性，导致在制定风电场无功电压控制策略时存在困难。对此提出双馈风电场无功支撑范围评估方法，并基于评估结果优化风电场参与电网调压的无功控制策略。首先，基于双馈风电机组有功功率数据，估算出机组的无功功率极限，并分析了风电场的无功容量构成及计算方法。然后，通过两阶段评估方法评估风电场容量。第一阶段获得风电场最大无功支撑范围，第二阶段校验风电场在各种不确定条件下的无功调节能力。在此基础上，以减小风电场节点电压偏差、降低网络损耗和利用风电机组无功潜力为目标，构建多目标问题，并利用优化算法求解。最后，通过算例证明所提控制策略可以在充分利用风电机组无功潜力的前提下，减少风电场节点电压偏差和网络损耗。 |
| 关键词: 双馈异步风电机组 风电场 无功支撑范围 控制策略 |
| DOI：DOI: 10.19783/j.cnki.pspc.220401 |
| 投稿时间：2022-03-24修订日期：2022-07-11 |
| 基金项目:国家自然科学基金项目资助(51725702)；国网公司科技项目资助(SGGR0000WLJS2101325) |
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| Voltage control strategy for a wind farm considering the reactive capability of DFIGs |
| WANG Yaoxiang,DAI Chaobo,YANG Zhichang,XU Guoyi,BI Tianshu |
| (1. State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources North China Electric Power
University), Beijing 102206, China; 2. State Key Laboratory of Advanced Power Transmission Technology
State Grid Smart Grid Research Institute Co., Ltd.), Beijing 102209, China)) |
| Abstract: |
| The doubly-fed induction generator can provide reactive power to participate in reactive regulation of the grid, but its reactive power range is uncertain. This leads to difficulties in designing voltage control strategies for wind farms. A method to evaluate reactive power range of a wind farm is proposed, and a reactive power control strategy for wind farms participating in grid regulation is given based on the evaluation results. First, the reactive power limit of the turbine is estimated based on the active power. The reactive power capacity composition and calculation method of the wind farm are also analyzed. Then the reactive power capacity of the wind farm is assessed by a two-stage evaluation method. In the first stage, the maximum reactive power support range of the wind farm is obtained, and in the second stage, the reactive power capability is verified considering the uncertainty. A multi-objective optimization problem is constructed with the objectives of reducing voltage deviations, network losses and making full use of the reactive power potential of individual wind turbines. The problem is solved with an optimization algorithm. Finally, the simulation analysis has proved that under the premise of optimum utilization of the reactive power potential of the wind turbines, the voltage deviation and network loss of the wind farm can be reduced. |
| Key words: active distribution network (AND) violation risk soft open point coordinated planning renewable distributed energy operation optimization |
