|本期目录/Table of Contents|

[1]晏 坤,甘景福,赵 昕,等.一种新能源公共连接点系统谐波阻抗计算方法[J].工业仪表与自动化装置,2024,(01):76-82.[doi:DOI:10.19950/j.cnki.CN61-1121/TH.2024.01.017]
　YAN Kun,GAN Jingfu,Zhao xin,et al.System harmonic impedance estimation method of new energy access point[J].Industrial Instrumentation & Automation,2024,(01):76-82.[doi:DOI:10.19950/j.cnki.CN61-1121/TH.2024.01.017]
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一种新能源公共连接点系统谐波阻抗计算方法(PDF)

《工业仪表与自动化装置》[ISSN:1000-0682/CN:61-1121/TH]

卷:
期数:
2024年01期
页码:
76-82
栏目:
出版日期:
2024-02-15

文章信息/Info

Title:
System harmonic impedance estimation method of new energy access point
文章编号:
1000-0682（2024）01-0076-07
作者:
晏 坤1; 甘景福1; 赵 昕1; 李昕溯2; 潘建铭2
（1．国网冀北电力有限公司唐山供电公司，河北 唐山 063000；2.华北电力大学 电力工程系，河北 保定 071000）
Author(s):
YAN Kun1;  GAN Jingfu1;  Zhao xin1;  LI Xinsu2;  PAN Jianming2
(1. State Grid Jibei Electric Power CO., LTD Tangshan Power Supply Company, Hebei Tangshan 063000, China; 2. Department of Electric Power Engineering, North China Electric Power University, Hebei Baoding 071000, China)
关键词:
新型电力系统; 系统谐波阻抗; 快速独立分量分析; 谐波责任; 谐波放大
Keywords:
new power systems;  system harmonic impedance;  FastICA;  harmonic responsibility;  harmonic amplification
分类号:
TM743
DOI:
DOI:10.19950/j.cnki.CN61-1121/TH.2024.01.017
文献标志码:
A
摘要:
针对新型电力系统中谐波责任划分及谐波放大问题研究中的谐波阻抗获取这一关键环节，提出一种改进的基于快速独立分量分析的公共连接点系统谐波阻抗估算方法。通过对公共连接点处电压和电流快速变化分量进行快速独立分量分析，得到四个独立分量及混合矩阵，推导了混合矩阵各元素与谐波阻抗间的线性关系，并基于系统侧和电源侧谐波电流、阻抗的关系及特性，根据独立分量与混合信号间的相关性求取变换矩阵并重新确定独立分量的正确次序和对应的混合矩阵，进而通过该混合矩阵各元素间的关系，推导系统谐波阻抗计算公式。搭建了仿真模型对所提方法进行仿真验证，仿真结果表明，改进的谐波阻抗估算方法可准确估算系统谐波阻抗值，在系统谐波电流幅值小于电源谐波电流幅值且差距较大时，具有较高的估算精度及稳定性。
Abstract:
This paper proposes an improved harmonic impedance estimation method for access point systems based on fast independent component analysis (FastICA), which is a key step in the study of harmonic responsibility division and harmonic amplification in new power systems. By using FastICA for the rapidly changing components of the common connection point, mixing matrices and independent components are obtained, then the linear relationship between the elements of the mixing matrix and the harmonic impedance is derived. Based on the relationship and characteristics of the harmonic current and impedance on the system side and power supply side, then according to the correlation between independent components and mixed signals, a transformation matrix is obtained and the correct order of independent components and the relative mixed matrix are obtained. Finally the calculation formula of harmonic impedance of the system is deduced through the relationship between the elements of the mixed matrix. A simulation model was built to verify the proposed method. The simulation results show that the improved harmonic impedance estimation method can accurately estimate the harmonic impedance of the system. When the amplitude of the system harmonic current is smaller than that of the power supply harmonic current and the gap is large, the proposed method gain higher estimation accuracy and stability.

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备注/Memo

备注/Memo:
收稿日期：2023-08-31基金项目：国家电网有限公司科技项目（52010320019L）；国网唐山供电公司新型电力系统研究项目（B3010322000N）第一作者：晏坤（1988—），男，湖北人，硕士，工程师，研究方向为电网调度与负荷预测及电力设备故障识别。E-mail：370035816@qq.com
更新日期/Last Update: 1900-01-01