电源学报

频谱优化的离散区间二进制序列宽频带阻抗测量方法

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韩少华 ¹ , 姜云龙 ² , 葛萱 ¹ , 喻建瑜 ² , 陈励勤 ³ , 陈燕东 ³

电源学报 | 电磁干扰与电磁兼容 2026,24(2): 312-323

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电源学报 |电磁干扰与电磁兼容 2026 , 24 (2) : 312 -323

频谱优化的离散区间二进制序列宽频带阻抗测量方法

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韩少华¹, 姜云龙², 葛萱¹, 喻建瑜², 陈励勤³, 陈燕东³

作者信息

^1.国网江苏省电力有限公司宿迁供电分公司，宿迁　223800

^2.国网江苏省电力有限公司电力科学研究院，南京　211103

^3.湖南大学电能高效高质转化全国重点实验室，长沙　410082

通讯作者:

陈励勤（2000—　），男，通信作者，博士研究生。研究方向：新能源发电系统稳态稳定性分析与控制策略。E-mail：liqinchen@hnu.edu.cn。

作者简介:

韩少华（1990—　），男，硕士，高级工程师。研究方向：电力系统自动化，交直流混合配电网。E-mail：hanshaohua9044@163.com。

姜云龙（1994—　），男，硕士，工程师。研究方向：阻抗稳定性分析。E-mail：jyl_jsdky@163.com。

葛萱（1994—　），女，本科，工程师。研究方向：交直流混合配电网。E-mail：ryan8077@foxmail.com。

喻建瑜（1994—　），男，硕士，工程师。研究方向：阻抗稳定性分析。E-mail：yujianyu3210@163.com。

陈燕东（1979—　），男，中国电源学会高级会员，博士，教授。研究方向：新能源发电系统建模与控制，微电网技术，特种电源技术。E-mail：yandong_chen@hnu.edu.cn。

Method for Wide-band Impedance Measurement Based on Discrete Interval Binary Sequence with Optimized Spectrum

Shaohua HAN¹, Yunlong JIANG², Xuan GE¹, Jianyu YU², Liqin CHEN³, Yandong CHEN³

Affiliations

^1.Suqian Power Supply Branch, State Grid Jiangsu Electric Power Co., Ltd., Suqian 223800, China

^2.Electric Power Research Institute, State Grid Jiangsu Electric Power Co., Ltd., Nanjing 211103, China

^3.State Key Laboratory of High-efficiency and High-quality Conversion for Electric Power, Hunan University, Changsha 410082, China

出版时间: 2026-02-28 doi: 10.13234/j.issn.2095-2805.2026.2.312

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摘要

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随着大量新能源装备接入直流配电网，光伏发电的随机波动性、负荷的不可预测性等因素均会对系统稳定造成影响。系统在运行时具有以电力电子装备为主导、时变性强的特点，为确保直流配电网高效稳定运行，实时、准确获取配电网中电力电子设备阻抗特性至关重要。于是提出了1种频谱优化的离散区间二进制序列DIBS（discrete interval binary sequence）宽频带阻抗测量方法，利用相位优化公式和Nelder-Mead算法优化DIBS生成信号各频率分量的相位，并对DIBS生成信号和幅值选取方式进行改进，使得信号频谱集中于目标频段，提升测量效率和精度。为验证方法的有效性，对比了多正弦信号与优化的DIBS信号时域波形和频谱，并在MATLAB/Simulink中进行了仿真验证。结果表明，在信号频谱能量相同的情况下，DIBS注入幅值更小，能够精确测量电力电子装备的阻抗特性。最后，在硬件平台上进行了无源负载阻抗测量实验，验证了所提方法的有效性。

关键词

阻抗测量 / 二进制序列 / 频谱优化 / 直流配电网

Abstract

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With a large number of renewable energy devices being integrated into DC distribution network, the factors such as the random fluctuation of photovoltaic power generation and unpredictability of loads will have an impact on the system stability. During its operation, the system has characteristics of being dominated by power electronic equipment and time-varying. To ensure the efficient and stable operation of the DC distribution network, it is crucial for obtaining the impedance characteristics of power electronic equipment in the distribution network accurately in real time. A wide-band impedance measurement method based on discrete interval binary sequence (DIBS) with optimized spectrum is proposed, and the phase optimization formula and Nelder-Mead algorithm are used for optimizing the phase of each frequency component of the DIBS generating signal. In addition, the methods of generating signal and amplitude selection are improved, so that the signal spectrum is focused on the target frequency band, and the measurement efficiency and accuracy are improved. To verify the effectiveness of the proposed method, the time-domain waveforms and spectra of the multi-sinusoidal signal and optimized DIBS signal are compared, and simulations are carried out in Matlab/Simulink to verify the method. Results show that the injected voltage amplitude of DIBS is smaller and can accurately measure the impedance characteristics of power electronic equipment with the same signal spectral energy. Finally, passive load impedance measurement experiments were carried out on a hardware platform to verify the effectiveness of the proposed method.

Key words

Impedance measurement / binary sequence / spectrum optimization / DC distribution network

引用本文

韩少华, 姜云龙, 葛萱, 喻建瑜, 陈励勤, 陈燕东. 频谱优化的离散区间二进制序列宽频带阻抗测量方法. 电源学报, 2026 , 24 (2) : 312 -323 . DOI: 10.13234/j.issn.2095-2805.2026.2.312

Shaohua HAN, Yunlong JIANG, Xuan GE, Jianyu YU, Liqin CHEN, Yandong CHEN. Method for Wide-band Impedance Measurement Based on Discrete Interval Binary Sequence with Optimized Spectrum[J]. Journal of Power Supply, 2026 , 24 (2) : 312 -323 . DOI: 10.13234/j.issn.2095-2805.2026.2.312

基金

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国网江苏省电力有限公司科技项目(J2023045)

参考文献

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参考文献引证文献

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2026年第24卷第2期

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文章信息

doi: 10.13234/j.issn.2095-2805.2026.2.312

接收时间：2024-12-05
首发时间：2026-10-29
出版时间：2026-02-28

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出版历史

收稿日期：2024-12-05
修回日期：2025-01-05
录用日期：2025-02-08

基金

Science and Technology Project of State Grid Jiangsu Electric Power Co., Ltd.(J2023045)

国网江苏省电力有限公司科技项目(J2023045)

作者信息

^1.国网江苏省电力有限公司宿迁供电分公司，宿迁　223800

^2.国网江苏省电力有限公司电力科学研究院，南京　211103

^3.湖南大学电能高效高质转化全国重点实验室，长沙　410082

通讯作者:

陈励勤（2000—　），男，通信作者，博士研究生。研究方向：新能源发电系统稳态稳定性分析与控制策略。E-mail：liqinchen@hnu.edu.cn。

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https://castjournals.cast.org.cn/joweb/dyxb/CN/10.13234/j.issn.2095-2805.2026.2.312

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2种不同金属材料的力学参数

科 Family	属数 Number of genus	种数 Number of species	占总种数比例 Percentage of total species (%)	属 Genus	种数 Number of species	占总种数比例 Percentage of total species (%)
鹅膏菌科Amanitaceae	2	11	5.26	鹅膏菌属 Amanita	10	4.78
小菇科 Mycenaceae	2	12	5.74	丝盖伞属 Inocybe	5	2.39
多孔菌科 Polyporaceae	8	14	6.70	蜡蘑属 Laccaria	5	2.39
红菇科 Russulaceae	3	23	11.00	小皮伞属 Marasmius	6	2.87
				小菇属 Mycena	11	5.26
				光柄菇属 Pluteus	5	2.39
				红菇属 Russula	17	8.13
				栓菌属 Trametes	5	2.39

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