| 引用本文: | 黄 蕾,王 辉,张鑫灏,等.面向电压主动支撑和抗扰能力提升的光伏场站两阶段协同优化控制[J].电力系统保护与控制,2025,53(21):28-39. |
| HUANG Lei,WANG Hui,ZHANG Xinhao,et al.Two-stage coordinated optimization control for active voltage support and disturbance rejection enhancement in PV power plants[J].Power System Protection and Control,2025,53(21):28-39 |
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| 摘要: |
| 光伏场站内不同类型无功源在补偿容量和响应速度等方面存在明显差异，如何协调无功源提升场站主动电压支撑与抵抗电压扰动能力成为关键问题。为此，提出了一种面向电压主动支撑和抗扰能力提升的光伏场站两阶段协同优化控制。首先，在电压主动支撑阶段，提出动态无功需求校正策略，基于无功电压关系式动态校正无功需求值，并协调动态无功源快速支撑并网点电压。然后，在抗扰能力提升阶段，提出渐进式电容器组优化投切策略，逐步替代静止无功发生器出力，提升其无功裕度，增强场站抵抗电压扰动的能力。最后，基于并网光伏场站的仿真分析表明，所提控制相较于自适应下垂控制与多无功源控制，具有更优的电压支撑、抗扰效果和经济效益。 |
| 关键词: 光伏场站 电压支撑 抗扰能力 两阶段控制 动态无功源 电容器组 |
| DOI：10.19783/j.cnki.pspc.250626 |
| 分类号: |
| 基金项目:国家重点研发计划项目资助(2022YFB4202304)；中国华电集团有限公司科技项目资助(CHDKJ24-04-02-270) |
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| Two-stage coordinated optimization control for active voltage support and disturbance rejection enhancement in PV power plants |
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HUANG Lei1, WANG Hui1, ZHANG Xinhao2, XIAO Bitao1, LIU Yuan1, YAO Wei2, WEN Jinyu2
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1. Guodian Nanjing Automation Co., Ltd., Nanjing 210032, China; 2. State Key Laboratory of Advanced Electromagnetic
Technology (School of Electrical and Electronic Engineering, Huazhong University of
Science and Technology), Wuhan 430074, China
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| Abstract: |
| In photovoltaic (PV) power plants, different types of reactive power sources exhibit significant differences in compensation capacity and response speed. How to coordinate these reactive sources to enhance the plant’s active voltage support and resistance to voltage disturbances has become a key issue. To address this, a two-stage coordinated optimization control strategy is proposed for PV power plants, aimed at improving active voltage support and disturbance rejection capability. First, during the active voltage support stage, a dynamic reactive power demand correction method is introduced, which dynamically adjusts the reactive power demand based on the Q-V relationship and coordinates dynamic reactive power sources to rapidly support the voltage at the point of common coupling. Then, during the disturbance rejection enhancement stage, a progressive capacitor bank switching strategy is proposed to gradually replace the output of the static var generators, thereby improving its reactive power reserve and enhancing the plant’s ability to withstand voltage disturbances. Finally, simulation results based on a grid-connected PV power plant demonstrate its superior voltage support, disturbance rejection, and economic performance compared to adaptive droop control and multi-reactive- source control methods. |
| Key words: PV power plant voltage support disturbance rejection capability two-stage control dynamic reactive source capacitor bank |
