| 引用本文: | 金泳霖,戈阳阳,晁璞璞,等.基于系统功率扰动程度的风电机组主动频率支撑控制策略[J].电力系统保护与控制,2025,53(14):49-58.[点击复制] |
| JIN Yonglin,GE Yangyang,CHAO Pupu,et al.Wind turbine active frequency support control strategy based on system power disturbance severity[J].Power System Protection and Control,2025,53(14):49-58[点击复制] |
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| 摘要: |
| 风电参与系统调频是提升新能源高占比电力系统频率安全稳定水平的关键措施之一。然而风电机组的现有调频控制策略难以适应系统多样化的功率扰动，未能充分发挥风电机组的快速频率支撑能力。建立了直驱型风电机组调频控制的通用电磁暂态模型，并对现有调频控制策略下风电机组的动态特性进行了分析，明确了限制其调频能力的原因。在此基础上，通过建立计及风电调频的改进系统频率响应模型，实现了系统功率扰动程度的评估，并进一步提出了基于该评估结果的风电机组的主动频率支撑控制策略。该策略基于扰动发生后的最大频率变化率(rate of change of frequency, RoCoF)判断系统功率扰动程度，结合风电机组的运行模式，选择不同的调频控制组合，能够在充分发挥风电机组的主动频率支撑能力的同时，显著降低系统频率的二次跌落风险。仿真结果表明，相比于定参数调频策略和传统自适应调频策略，所提方法在不同扰动程度下的调频性能优势明显，证明了方法的有效性。 |
| 关键词: 风电机组 减载备用控制 虚拟惯量控制 下垂控制 短时增发控制 转速恢复控制 |
| DOI：10.19783/j.cnki.pspc.241375 |
| 投稿时间：2024-10-15修订日期：2025-02-11 |
| 基金项目:国家电网公司科技项目资助(2023ZX-18) |
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| Wind turbine active frequency support control strategy based on system power disturbance severity |
| JIN Yonglin1,GE Yangyang2,CHAO Pupu1,MA Xintong2,ZENG Pengquan1,ZHANG Ruihao1,LI Weixing1 |
| (1. School of Electrical Engineering, Dalian University of Technology, Dalian 116024, China; 2. Electric Power Research
Institute of State Grid Liaoning Electric Power Co., Ltd., Shenyang 110006, China) |
| Abstract: |
| Wind power participation in system frequency regulation is a key measure for enhancing the frequency security and stability of power systems with high renewable energy penetration. However, existing wind turbine frequency regulation strategies struggle to cope with diverse power disturbances in such systems and fail to fully utilize wind turbines’ fast frequency support capabilities. This paper develops a generalized electromagnetic transient model for frequency regulation control of direct-drive wind turbines and examines their dynamic behaviors under current frequency regulation strategies to identify the factors that limit their regulation capability. Building on this analysis, an improved system frequency response model that incorporates wind power frequency regulation is established to assess the severity of system power disturbances. A novel active frequency support control strategy for wind turbines is then proposed based on this assessment. The strategy evaluates disturbance severity using the maximum rate of change of frequency (RoCoF) following a disturbance and selects different combinations of frequency control methods according to the wind turbine’s operational mode. This allows wind turbines to effectively provide active frequency support while significantly reducing the risk of second frequency dips. Simulation results demonstrate that compared with fixed-parameter and traditional adaptive frequency control strategies, the proposed strategy offers superior frequency regulation performance under varying levels of disturbance, demonstrating its effectiveness. |
| Key words: wind turbines de-loading reserve control virtual inertia control droop control short-time incremental control rotor speed recovery control |
