基于云-边协同的配电网快速供电恢复智能决策方法
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作者单位:

1.南方电网数字电网研究院有限公司;2.智能电网教育部重点实验室天津大学

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中图分类号:

TM74

基金项目:

国家重点研发计划资助(2020YFB0906000,2020YFB0906002)


Cloud-Edge Collaboration-based Supply Restoration Intelligent Decision-Making Method
Author:
Affiliation:

1.Digital Grid Research Institute,China Southern Power Grid;2.Key Laboratory of Smart grid of Ministry of Education,Tianjin University

Fund Project:

National Key R&D Program of China (2020YFB0906000, 2020YFB0906002)

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    摘要:

    分布式电源高渗透率接入对配电网故障自愈能力提出了更高的要求。基于模型的供电恢复方法利用准确网络参数构建优化模型,可以实现供电恢复策略的准确制定。但在配电网实际运行中,精准的配电网络参数往往难以获取,基于模型的供电恢复方法应用受限。边缘计算技术及云-边协同运行模式可作为配电网快速供电恢复的一种实现方案。本文提出一种基于云-边协同的配电网快速供电恢复智能决策智能决策方法,首先,在云端基于图卷积神经网络建立配电网快速供电恢复智能决策模型,训练网络重构模块和潮流模拟模块;当故障发生后,云端利用网络重构模块,快速定制网络重构策略,经过破圈法/避圈法后验校正后下发至配电网边缘侧的边缘计算装置;边缘侧根据云端的网络重构策略利用潮流模拟模块就地制定负荷恢复策略,实现系统的快速供电恢复;最后,依托典型配电网算例,对所提模型进行分析,验证方法的有效性。

    Abstract:

    The wide integration of distributed generators (DGs) puts forward high requirements on the self-healing ability of distribution network. However, commonly used model-based supply restoration method depends upon accurate network parameters, which may be absent in practical operation. The rapid development of edge computing has promoted a significant change in the operation structure of distribution network. In this paper, a supply restoration method is proposed based on cloud-edge collaboration. Firstly, an intelligent decision-making model is established based on graph convolutional neural network (GCN) on the cloud, which contains network reconstruction module and power flow simulation module. The network reconstruction module is used to customize the reconstruction strategy on the cloud. After the correction by loop-breaking/loop-avoiding method, the reconstruction strategy will be sent to the edge. With the power flow simulation module, the supply recovery strategy can be determined rapidly at the edge side. Finally, the effectiveness of the proposed strategy is validated using the modified IEEE 33-node system. The results show that the proposed supply restoration strategy can effectively improve the self-healing ability of distribution network.

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  • 收稿日期:2022-12-09
  • 最后修改日期:2023-02-18
  • 录用日期:2023-03-01
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