| 引用本文: | 杨起珍,陈磊,蹇傲霖,奥博宇,闵勇.适应风速随机性的变速风电机组超速减载调频控制策略及调频效果分析[J].电力自动化设备,2025,45(6):79-87. |
| YANG Qizhen,CHEN Lei,JIAN Aolin,AO Boyu,MIN Yong.Overspeed deloading control strategy for frequency regulation of variable-speed wind turbine adapting to wind speed stochasticity and frequency regulation effect[J].Electric Power Automation Equipment,2025,45(6):79-87. |
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| 摘要: |
| 变速风电机组在大功率扰动随机风速场景下进行超速减载调频时存在转子失速的风险，可能导致系统频率二次跌落。推理得到最优功率上限形式，基于此，提出适应风速随机性的超速减载调频控制策略，并证明该策略能够避免转子失速。基于所提策略推导出系统临界功率扰动满足的方程式，只要系统功率扰动不超过临界值，功率上限就不会对频率最低点与平均频率变化率造成影响。建立四机两区域仿真模型，验证了所提策略及临界功率扰动计算方法的有效性，所提策略能够在大功率扰动随机风速场景下避免转子失速并取得最优调频效果。 |
| 关键词: 变速风电机组 超速减载调频 功率上限保护 风速随机性 转子失速 |
| DOI：10.16081/j.epae.202412016 |
| 分类号:TM614 |
| 基金项目:国家重点研发计划项目(2021YFB2400500) |
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| Overspeed deloading control strategy for frequency regulation of variable-speed wind turbine adapting to wind speed stochasticity and frequency regulation effect |
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YANG Qizhen, CHEN Lei, JIAN Aolin, AO Boyu, MIN Yong
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State Key Laboratory of Power System Operation and Control, Department of Electrical Engineering, Tsinghua University, Beijing 100084, China
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| Abstract: |
| There is a risk of rotor stalling during overspeed deloading for frequency regulation of variable-speed wind turbine under the scenarios of large power disturbance and stochastic wind speed, which may leads to a secondary drop of system frequency. The form of optimal power upper limit is deduced, on this basis, an overspeed deloading control strategy for frequency regulation adapting to wind speed stochasticity is proposed, and it is proven that the proposed strategy can prevent rotor stalling. Based on the proposed strategy, the equation that the system critical power disturbance satisfies is derived. As long as the system power disturbance does not exceed the critical value, the power upper limit will not affect the frequency nadir and average rate of change of frequency. A four-machine two-area simulation model is established to verify the effectiveness of the proposed strategy and the calculation method of critical power disturbance, and the proposed strategy can prevent rotor stalling and achieve the optimal frequency regulation performance under scenarios of large power disturbance and stochastic wind speed. |
| Key words: variable-speed wind turbine overspeed deloading for frequency regulation power upper limit protection wind speed stochasticity rotor stalling |
