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1.强电磁技术全国重点实验室(华中科技大学),湖北省武汉市 430074
2.华中科技大学电气与电子工程学院,湖北省武汉市 430074
成昕雨(2000—),女,硕士研究生,主要研究方向:电力系统运行与控制。E-mail:xinyucheng@hust.edu.cn
王丹(1977—),男,通信作者,博士,教授,博士生导师,主要研究方向:电力系统运行与控制、大功率电力电子技术在电力系统中应用。E-mail:wangdan@mail.hust.edu.cn
李文浩(2000—),男,硕士研究生,主要研究方向:电力系统优化控制。E-mail:nuclear_li@hust.edu.cn
收稿:2023-06-27,
修回:2023-12-06,
网络出版:2024-03-06,
纸质出版:2024-08-25
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成昕雨,王丹,李文浩等.考虑不对称转速边界约束的变速抽蓄机组综合惯量调频控制[J].电力系统自动化,2024,48(16):88-98.
CHENG Xinyu,WANG Dan,LI Wenhao,et al.Comprehensive Inertia Frequency Regulation Control of Variable-speed Pumped Storage Unit Considering Asymmetric Speed Boundary Constraints[J].Automation of Electric Power Systems,2024,48(16):88-98.
成昕雨,王丹,李文浩等.考虑不对称转速边界约束的变速抽蓄机组综合惯量调频控制[J].电力系统自动化,2024,48(16):88-98. DOI: 10.7500/AEPS20230627004.
CHENG Xinyu,WANG Dan,LI Wenhao,et al.Comprehensive Inertia Frequency Regulation Control of Variable-speed Pumped Storage Unit Considering Asymmetric Speed Boundary Constraints[J].Automation of Electric Power Systems,2024,48(16):88-98. DOI: 10.7500/AEPS20230627004.
当系统出现频率跌落时,变速抽蓄机组可大幅降低转速、迅速释放转子动能,从而为系统提供惯量支撑,但目前已有的调频方案未能有效发挥变速抽蓄机组的这一优势。为充分利用转子动能,提出一种考虑不对称转速边界约束的变速抽蓄机组综合惯量调频控制策略。首先,从变速抽蓄机组的有功支撑特性和不对称转速约束条件出发,得出适用于变速抽蓄机组的最优频率控制结构,该结构中包含两个时间常数不同的虚拟惯量控制环节。然后,分析各惯量控制环节的作用并整定相关参数。在此基础上,计及变速抽蓄机组运行特性与电力系统调频需求,设计了变速抽蓄机组不对称综合惯量控制策略,使得机组转速降低时可以为系统提供更大的惯量支撑。仿真结果表明,所提调频策略能够充分发挥变速抽蓄机组的优势,维持系统频率稳定。
When the frequency of the power system drops
the variable-speed pumped storage (VSPS) unit can greatly reduce its speed and quickly release the rotor kinetic energy to provide inertia support for the system. However
the existing frequency regulation strategies fail to effectively take the advantage of the VSPS unit. In order to make full use of the rotor kinetic energy
a comprehensive inertia frequency regulation control strategy of the VSPS unit is proposed
which takes into account the asymmetric speed boundary constraints. First
based on the active power support characteristics and asymmetric speed constraints of the VSPS unit
the optimal frequency control structure suitable for the VSPS unit is derived
which includes two virtual inertia control links with different time constants. Then
the function of each inertia control link is analyzed and the related parameters are set. On this basis
considering the operation characteristics of the VSPS unit and the frequency regulation demands of the power system
the asymmetric comprehensive inertia control strategy of the VSPS unit is designed
through which the unit can provide greater inertia support to the system when the speed is reduced. Simulation results show that the proposed frequency regulation strategy can give full play to the advantages of the VSPS unit and maintain system frequency stability.
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