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上海电力大学电气工程学院,上海市 200090
李宏仲(1977—),男,博士,副教授,硕士生导师,主要研究方向:非水可再生能源发电消纳与控制、主动配电网规划、电力系统可靠性与灵活性分析等。E-mail:Lhz_ab@263.net
叶翔宇(1998—),男,通信作者,硕士研究生,主要研究方向:可再生能源功率预测与电力系统优化调度。E-mail:13853750014@163.com
收稿:2022-08-22,
修回:2023-02-17,
网络出版:2023-07-11,
纸质出版:2023-08-10
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李宏仲,叶翔宇.考虑灵活性供需匹配的电力系统自适应时间尺度调度策略[J].电力系统自动化,2023,47(15):122-132.
LI Hongzhong,YE Xiangyu.Adaptive Time-scale Dispatching Strategy for Power System Considering Flexibility Supply-Demand Matching[J].Automation of Electric Power Systems,2023,47(15):122-132.
李宏仲,叶翔宇.考虑灵活性供需匹配的电力系统自适应时间尺度调度策略[J].电力系统自动化,2023,47(15):122-132. DOI: 10.7500/AEPS20220822006.
LI Hongzhong,YE Xiangyu.Adaptive Time-scale Dispatching Strategy for Power System Considering Flexibility Supply-Demand Matching[J].Automation of Electric Power Systems,2023,47(15):122-132. DOI: 10.7500/AEPS20220822006.
可再生能源和灵活性资源的大量接入,增加了电力系统调度的复杂性。为满足系统中灵活性需求波动的非平稳性,在计及灵活性资源响应特征差异化的基础上,文中提出了考虑灵活性供需幅频匹配的电力系统日前自适应时间尺度调度策略。首先,基于区间数理论描述了日前可再生能源功率预测误差率的不确定性,进而得到灵活性需求的不确定性场景。其次,采用均值变分模态分解技术对灵活性需求序列进行分解分析,建立灵活性资源的响应物理模型。然后,利用分解子模态的波动周期属性与灵活性资源的响应周期属性构建灵活性供需幅频匹配框架,并根据匹配结果建立自适应时间尺度的优化调度模型。最后,对优化后的IEEE 39节点系统和实际电网系统展开分析,验证了所提方法的合理性。
The extensive integration of renewable energy and flexible resources has increased the complexity of power system dispatching. In order to meet the non-stationary fluctuation of flexibility demand in the system
based on the differentiation of flexible resource response characteristics
this paper proposes a day-ahead adaptive time-scale dispatching strategy for the power system considering the flexibility supply-demand amplitude-frequency matching. Firstly
based on the interval number theory
the uncertainty of the error rate in predicting the power of renewable energy in the future is described
and the uncertainty scenario of flexibility demand is obtained. Secondly
the mean variational mode decomposition technique is used to decompose and analyze the sequence of flexibility requirements
and a physical model of the response of flexible resources is established. Then
the fluctuation period attribute of the decomposition submode and the response period attribute of the flexible resource are used to construct a flexibility supply-demand amplitude-frequency matching framework
and an optimal adaptive time-scale dispatching model is established based on the matching results. Finally
an analysis is conducted on the optimized IEEE 39-bus system and the actual power grid system to verify the rationality of the proposed method.
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