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1.大连理工大学电气工程学院,辽宁省大连市 116024
2.国家电网有限公司东北分部,辽宁省沈阳市 110180
刘子琦(1999—),女,硕士研究生,主要研究方向:电力系统一次调频评价。E-mail:lzq12345@mail.dlut.edu.cn
刘洋(1985—),男,高级工程师,主要研究方向:大容量电力电子设备与电网稳定运行。E-mail:liuyanghitsz@126.com
李卫东(1964—),男,通信作者,教授,博士生导师,主要研究方向:电力系统频率稳定分析与控制和电力系统频率响应资源的优化协调与调度。E-mail:wdli@dlut.edu.cn
收稿:2023-02-18,
修回:2023-05-16,
网络出版:2023-07-19,
纸质出版:2023-08-25
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刘子琦,刘洋,李卫东等.火电机组一次调频和二次调频响应功率数据剥离方法[J].电力系统自动化,2023,47(16):132-141.
LIU Ziqi,LIU Yang,LI Weidong,et al.Data Separation Method for Primary and Secondary Frequency Regulation Response Power of Thermal Power Units[J].Automation of Electric Power Systems,2023,47(16):132-141.
刘子琦,刘洋,李卫东等.火电机组一次调频和二次调频响应功率数据剥离方法[J].电力系统自动化,2023,47(16):132-141. DOI: 10.7500/AEPS20230218001.
LIU Ziqi,LIU Yang,LI Weidong,et al.Data Separation Method for Primary and Secondary Frequency Regulation Response Power of Thermal Power Units[J].Automation of Electric Power Systems,2023,47(16):132-141. DOI: 10.7500/AEPS20230218001.
火电机组一次调频和二次调频控制成本差异较大,需要对其控制性能分别评价,为合理补偿或付费提供依据。一次和二次调频响应功率是机组控制性能评价的基础参量,但两者彼此交织于机端有功功率而无法直接使用,导致分别评价缺乏依据。基于数值解析方法得到的一次和二次调频功率时间序列的时频差异,利用惯性比例-时延参量最小二乘拟合和Hodrick-Prescott趋势特征提取函数,提出了一种迭代分离算法;采用系统频率响应模型的响应功率和二次调频指令分别作为一次和二次调频功率迭代初值,可进一步提高数据剥离效果。仿真算例验证了所提方法的有效性与可行性。
There is a great difference between control costs of primary frequency regulation and secondary frequency regulation of thermal units
so it is necessary to respectively evaluate their control performance to provide a basis for reasonable compensation or payment. Primary and secondary frequency regulation response power are the basic parameters for the control performance evaluation of the units
but they are interwoven with the active power of the unit and cannot be used directly
resulting in the lack of the evaluation basis. Based on the time-frequency difference of the primary and secondary frequency regulation power time series obtained by the numerical analysis method
an iterative separation algorithm is proposed by the least square fitting of inertia proportional and delay parameter and Hodrick-Prescott trend feature extraction function. The response power of the system frequency response model and the secondary frequency regulation instruction are used as the initial iteration values of the primary and secondary frequency regulation power
respectively
which can further improve the data separation effect. The effectiveness and feasibility of the proposed method are verified by a simulation case.
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