• CSCD核心库收录期刊
  • 中文核心期刊
  • 中国科技核心期刊

电力建设 ›› 2021, Vol. 42 ›› Issue (8): 18-28.doi: 10.12204/j.issn.1000-7229.2021.08.003

• 能源互联网人工智能关键技术及其应用·栏目主持 刘友波副教授、胡伟副教授、王迎新主任、顾雨嘉高级工程师· • 上一篇    下一篇

基于极限学习机的有源配电网多场景静态电压安全分析

撖晨宇1, 胥鹏1, 朱红2, 刘少君2, 王蓓蓓1   

  1. 1.东南大学电气工程学院,南京市 210096
    2.国网江苏省电力有限公司南京供电分公司,南京市210000
  • 收稿日期:2020-11-27 出版日期:2021-08-01 发布日期:2021-07-30
  • 作者简介:撖晨宇(1996),男,硕士研究生,主要研究方向为人工智能在电力系统中的应用;
    胥鹏 (1994),男,博士研究生,主要从事数据挖掘、人工智能在电力系统中的应用等方面的研究工作;
    朱红(1971),硕士,研究员级高级工程师,主要从事电力系统数据挖掘等研究工作;
    刘少君(1980),硕士,高级工程师,主要从事电力系统智能化的研究工作;
    王蓓蓓(1979),女,博士,副教授,博士生导师,主要研究方向为电力市场、需求侧管理等。
  • 基金资助:
    国家电网公司科技项目“电力物联背景下主动配电网电压控制深度强化学习策略研究”

Static Voltage Safety Analysis Based on ELM for Active Distribution Power Grid

HAN Chenyu1, XU Peng1, ZHU Hong2, LIU Shaojun2, WANG Beibei1   

  1. 1. Scool of Electrical Engineering,Southeast University, Nanjing 210096, China
    2. Nanjing Power Supply Branch of State Grid Jiangsu Electric Power Co., Ltd., Nanjing 210000, China
  • Received:2020-11-27 Online:2021-08-01 Published:2021-07-30
  • Supported by:
    research program “Research on Deep Reinforcement Learning Strategy of Active Distribution Network Voltage Control under Power Internet of Things”of State Grid Corporation of China

摘要:

随着配电网中分布式可再生能源(distributed renewable generation,DRG)单相接入及其出力波动带来的不确定性增加,DRG接入情景下的配电网过电压、三相不平衡等静态电压安全分析面临新的挑战。为此,提出采用极限学习机模型挖掘配电网的三相潮流计算输入输出之间复杂的映射关系,训练后的网络能够大幅提升不同拓扑结构及不同DRG输出场景下三相潮流的计算效率。基于此提出了一种考虑多场景的有源配电网静态电压安全分析方法,该方法能够快速地对配电网中不同接入节点的安全性做出分析判别。最后采用接入DRG的IEEE 13节点、33节点及118节点系统进行仿真计算。仿真结果表明,所提方法较传统的三相潮流计算方法具有更高的计算速度,且不存在收敛性能上的问题,较BP神经网络方法也具有更高的效率与准确性,验证了所提方法的有效性与实用性。

关键词: 极限学习机, 电压越限分析, 安全分析, 神经网络

Abstract:

With the increase of uncertainty caused by the single phase access of distributed renewable generation (DRG) in the distribution power grid, the static safety analysis for overvoltage and imbalance of the distribution power grid with DRG faces new challenges. This paper proposes to use the extreme learning machine to analyze the complex relationship between the input and output of the three-phase power flow calculations in distribution network. The trained network can greatly improve the efficiency of power flow calculation in different scenarios caused by DRG fluctuations with this topology. On this basis, a voltage safety analysis method considering multiple scenarios of distribution power grid is proposed, which can quickly analyze and judge the safety of grid nodes. Finally, this paper uses IEEE 13-node,IEEE 33-node and IEEE 118-node systems with DRG for simulation calculation. The experimental results show that the method proposed in this paper is more effective than the traditional three-phase power flow calculation method without any convergence problem, and has higher efficiency and accuracy than BP neural network. The effectiveness of the proposed method is verified.

Key words: extreme learning machine, overvoltage analysis, safety analysis, neural network

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