| 引用本文: | 杜晓东,曾四鸣,刘科研,等.基于云模型的配电网运行画像数字孪生构建方法[J].电力系统保护与控制,2022,50(10):105-113. |
| DU Xiaodong,ZENG Siming,LIU Keyan,et al.Construction of portraits for a distribution network with digital twins based on a cloud model[J].Power System Protection and Control,2022,50(10):105-113 |
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| 摘要: |
| 随着新型电力系统的形成，配电网运行的不确定性和复杂性日益加大。运用数字孪生技术建立虚拟空间对物理电网的映射和交互，是掌握配电网复杂运行特性的有效手段。提出了基于数字孪生的配电网运行画像构建方法。首先，建立反映配电台区和线路运行状态的指标体系，运用客观统计排序策略将特征指标转化为模糊标签模板。然后，以日为单位提取运行指标构成采集样本，作为云模型的一个云滴，运用逆向云发生器形成运行指标的模糊表征。最后，用运行指标与标签模板的模糊距离进行加权求和，得到运行指标的打分值，形成物理意义清晰、评价依据客观的配电网运行画像，为全面刻画新型数字化配电网运行特征提供了技术手段。 |
| 关键词: 数字孪生 配电网 运行画像 云模型 模糊距离 |
| DOI：DOI: 10.19783/j.cnki.pspc.211484 |
| 分类号: |
| 基金项目:河北省重点研发计划项目资助(21312102D)；国网河北省电力有限公司科技项目资助(kj2020-084) |
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| Construction of portraits for a distribution network with digital twins based on a cloud model |
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DU Xiaodong1, ZENG Siming1, LIU Keyan2, ZHAN Huiyu2
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(1. Electric Power Research Institute of State Grid Hebei Electric Power Co., Ltd., Shijiazhuang 050021, China;
2. Power Distribution Technology Center, China Electric Power Research Institute Co., Ltd., Beijing 100192, China)
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| Abstract: |
| As new power systems develop, the uncertainty and complexity of distribution network operation are increasing. Using digital twin technology to establish the mapping and interaction between virtual spaces and physical power grids is an effective way to reveal the complex operation of distribution networks. A method of constructing distribution network operation portraits based on digital twins is proposed. First, an index that reflects the operations of supply districts and feeders is established, and a statistical ranking strategy is used to transform the characteristic index into a fuzzy label template. Then, the day operation index is extracted as a unit of acquired samples and as a cloud drop of the cloud model. Fuzzy expressions of the index are obtained using a reverse cloud generator. The fuzzy distances between the index and the labels are weighted and summed to obtain the score of the operation. A distribution network operation portrait with clear physical meaning and objective evaluation basis is formed. The distribution network operation portrait also provides a technical means for comprehensively depicting the operational characteristics of the new digital distribution network.
This work is supported by the Key Research and Development Program of Hebei Province (No. 21312102D). |
| Key words: digital twins distribution networks operation portraits cloud model fuzzy distance |
