基于改进极限学习机的交直流微电网并网等效建模

doi:10.3969/j.issn.1008-0198.2022.06.014

湖南电力 ›› 2022, Vol. 42 ›› Issue (6): 83-89.doi: 10.3969/j.issn.1008-0198.2022.06.014

基于改进极限学习机的交直流微电网并网等效建模

息梦蕊^1,2, 蔡昌春^1,2, 王斌³

1.江苏省输配电装备技术重点实验室(河海大学),江苏常州 213022;
2.河海大学物联网工程学院,江苏常州 213022;
3.国网江苏省电力有限公司太仓市供电分公司,江苏太仓 215400

收稿日期:2022-08-20 修回日期:2022-10-13 出版日期:2022-12-25 发布日期:2023-01-13
作者简介:息梦蕊(1998),女,硕士研究生,研究方向为微电网建模与仿真。蔡昌春(1981),男,博士,副教授,通信作者,研究方向为电力系统运行与控制。
基金资助:
国家自然科学基金(51607057);常州市应用基础研究计划项目(CJ20220245)

Equivalent Modeling of AC/DC Microgrid Connection Based on Improved Extreme Learning Machine

XI Mengrui^1,2, CAI Changchun^1,2, WANG Bin³

1. Jiangsu Key Laboratory of Power Transmission & Distribution Equipment Technology(Hohai University), Changzhou 213022, China;
2. College of The IOT Engineering, Hohai University, Changzhou 213022, China;
3. State Grid Taicang Electric Power Supply Company, Taicang 215400, China

Received:2022-08-20 Revised:2022-10-13 Online:2022-12-25 Published:2023-01-13

摘要/Abstract

摘要： 微电网接入配电网的数量不断增多,对配电网的稳定运行带来挑战,微电网等效建模是分析微电网接入影响及配电网动态仿真的基础。基于非机理建模的理论,以电压、电流的实部和虚部为输入,功率为输出,建立极限学习机的交直流微电网并网等效模型。利用麻雀搜索算法优化极限学习机的输入权重和阈值,减少极限学习机模型由于输入权重和阈值缺乏统一性带来的模型精确问题。最后,在DIgSILENT平台搭建交直流混合微电网模型进行验证,仿真结果证明了所提等效模型的有效性和准确性。

关键词: 微电网, 麻雀搜索算法, 改进极限学习机, 交直流微电网, 等效建模

Abstract: With the increasing number of microgrid connected to distribution network, it brings challenges to the stable operation of distribution network. The equivalent modeling of microgrid is the basis for analyzing the impact of microgrid access and dynamic simulation of distribution network. Based on the theory of non-mechanistic modeling, this paper establishes an AC/DC microgrid grid-connected equivalent model of extreme learning machine with real and imaginary parts of voltage and current as input and power as output. The sparrow search algorithm is used to optimize the input weight and threshold of extreme learning machine to reduce the model accuracy problem caused by the lack of unity of input weight and threshold. Finally, the AC/DC hybrid microgrid model is built on DIgSILENT platform for verification. The simulation results show the effectiveness and accuracy of the proposed equivalent model.

Key words: microgrid, sparrow search algorithm, improved extreme learning machine, AC/DC microgrid, equivalent modeling

中图分类号:

TM727

息梦蕊, 蔡昌春, 王斌. 基于改进极限学习机的交直流微电网并网等效建模[J]. 湖南电力, 2022, 42(6): 83-89.

XI Mengrui, CAI Changchun, WANG Bin. Equivalent Modeling of AC/DC Microgrid Connection Based on Improved Extreme Learning Machine[J]. Hunan Electric Power, 2022, 42(6): 83-89.

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基于改进极限学习机的交直流微电网并网等效建模

Equivalent Modeling of AC/DC Microgrid Connection Based on Improved Extreme Learning Machine

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