基于时序卷积网络的低压柔性互联配电网短期最大供电能力评估

彭寒梅 , 肖千皓 , 谭貌 , 苏永新 , 李辉

南方电网技术 ›› 2025, Vol. 19 ›› Issue (10) : 111 -120.

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南方电网技术 ›› 2025, Vol. 19 ›› Issue (10) : 111 -120. DOI: 10.13648/j.cnki.issn1674-0629.2025.10.011

基于时序卷积网络的低压柔性互联配电网短期最大供电能力评估

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Evaluation of Short-Term Total Supply Capability for Low-Voltage Flexible Interconnected Distribution Network Based on Temporal Convolutional Network

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摘要

低压柔性互联将同一区域配电网的低压台区间形成互联互供,可提高配电系统的最大供电能力(total supply capability,TSC),且低压台区接入的分布式能源具有时序性和不确定性,影响TSC值的变动。为此,提出了一种基于时序卷积神经网络(temporal convolutional network,TCN)的低压柔性互联配电网短期TSC评估方法,以兼具快速性和准确性。首先,进行低压柔性互联配电网短期TSC分析,建立基于数据驱动的短期TSC评估架构;然后,采用模型驱动的短期TSC评估方法,得到短期TSC值以获得训练样本,再离线训练TCN模型,得到短期TSC值与具有一定时序性的影响因素间非线性映射的TCN模型,实现由TCN在线评估系统短期TSC。最后,低压柔性互联配电网算例系统测试验证了所提方法的有效性。

Abstract

Low-voltage flexible interconnection forms interconnection and mutual power supply between low-voltage substation areas in the same regional distribution network, which can improve the total supply capacity (TSC) of the distribution system. Moreover, the distributed energy connected to the low-voltage substation area has temporal and uncertain characteristics, which affect the variation of TSC value. Therefore, a short-term TSC evaluation method for low-voltage flexible interconnected distribution networks based on temporal convolutional network (TCN) is proposed, which combines speed and accuracy. Firstly, short-term TSC analysis of low-voltage flexible interconnected distribution networks is conducted and establish a data-driven short-term TSC evaluation architecture is established. Then, a model-driven short-term TSC evaluation method is adopted to obtain short-term TSC values to obtain training samples. The TCN model is then trained offline to obtain a nonlinear mapping between short-term TSC values and influencing factors with certain temporal characteristics. This enables the online evaluation of short-term TSC by the TCN system. Finally, the effectiveness of the proposed method is verified through system testing of low-voltage flexible interconnected distribution networks.

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关键词

低压柔性互联 / 数据驱动 / 模型驱动 / 时序卷积网络 / 短期最大供电能力

Key words

low-voltage flexible interconnection / data-driven / model-driven / temporal convolutional network / short-term total supply capability

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彭寒梅,肖千皓,谭貌,苏永新,李辉. 基于时序卷积网络的低压柔性互联配电网短期最大供电能力评估[J]. 南方电网技术, 2025, 19(10): 111-120 DOI:10.13648/j.cnki.issn1674-0629.2025.10.011

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基金资助

国家自然科学基金资助项目(51777179)

湖南省自然科学基金项目(2023JJ50241)

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