电源学报

计及多环耦合的分布式新能源并网变流器有源阻尼控制

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高泽明 ¹^,² , 程伦 ¹ , 孙利强 ¹ , 陈琳浩 ¹

电源学报 | 电力电子化电力系统 2026,24(6): 232-241

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电源学报 |电力电子化电力系统 2026 , 24 (6) : 232 -241

计及多环耦合的分布式新能源并网变流器有源阻尼控制

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高泽明¹^,², 程伦¹, 孙利强¹, 陈琳浩¹

作者信息

^1.国网河北省电力有限公司，石家庄　050021

^2.浙江大学电气工程学院，杭州　310058

通讯作者:

高泽明（1981—　），男，通信作者，硕士，正高级工程师。研究方向：新能源并网控制技术，电力系统运行与电网规划技术。E-mail：cknjut@163.com。

作者简介:

程伦（1982—　），男，硕士，正高级工程师。研究方向：电力系统运行与电网规划技术。E-mail：cean1h@163.com。

孙利强（1975—　），男，本科，正高级工程师。研究方向：电力系统运行、控制与保护技术。E-mail：qfjsgccsd@163.com。

陈琳浩（1991—　），男，博士，工程师。研究方向：新型电力系统运行与控制技术。E-mail：k1hrbi@163.com。

Active Damping Control of Distributed New Energy Grid-connected Converters Considering Multi-loop Coupling

Zeming GAO¹^,², Lun CHENG¹, Liqiang SUN¹, Linhao CHEN¹

Affiliations

^1.State Grid Hebei Electric Power Co., Ltd., Shijiazhuang 050021, China

^2.College of Electrical Engineering, Zhejiang University, Hangzhou 310058, China

出版时间: 2026-06-30 doi: 10.13234/j.issn.2095-2805.2026.6.232

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摘要

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在弱电网中，并网变流器的锁相环会与电流环产生动态交互进而引发小信号（或谐波）失稳问题。为了解决这一问题，利用小信号建模方法建立了并网变流器等效阻抗模型，并在此基础上将变流器阻抗模型与系统稳定性判断方法相结合，利用极点变化轨迹及伯德图分析了弱电网工况下并网变流器的失稳机理。针对多输入多输出系统，在考虑多环耦合的同时，提出了一种基于最小相位数字滤波器的有源阻尼控制策略，用于控制系统稳定性，提高系统稳定裕度。给出了控制策略具体的实现方案、参数设计方法及控制策略对多环耦合部分的影响。另外，为了研究不同工况下所提控制策略的有效性，分析了不同电网强度、锁相环带宽和电流环带宽下采用所提控制策略的系统稳定裕度，并将其与传统控制进行了对比。最后，通过硬件在环实验验证了所提理论的正确性。

关键词

分布式新能源并网 / 有源阻尼控制 / 解耦控制 / 锁相环 / 电流环 / 阻抗建模 / 稳定性分析

Abstract

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In a weak grid, the phase-locked loop (PLL) of a grid-connected converter will dynamically interact with the current loop and further lead to a small-signal (or harmonic) instability problem. To solve this problem, a small-signal modeling method is used to establish an equivalent impedance model of the grid-connected converter. On this basis, the impedance model of the converter is combined with a system stability judgment method, and the instability mechanism of the grid-connected converter under the weak grid condition is analyzed by using the pole variation trajectory and the Bode plot. For a multiple-input multiple-output system, an active damping control strategy based on minimum phase digital filters is proposed while considering multi-loop coupling, so as to improve the system stability margin. At the same time, a specific implementation scheme of the control strategy, a parameter design method and the impact of the control strategy on the multi-loop coupling part are given. In addition, to study the effectiveness of the proposed control strategy under different operating conditions, the system stability margin under the proposed control strategy in the cases of different grid strengths, PLL bandwidths and current loop bandwidths is analyzed, and it is compared with that under the traditional control. Finally, the correctness of the proposed theory was verified by the result of a hardware-in-the-loop experiment.

Key words

Distributed new energy grid-connection / active damping control / decoupling control / phase-locked loop (PLL) / current loop / impedance modeling / stability analysis

引用本文

高泽明, 程伦, 孙利强, 陈琳浩. 计及多环耦合的分布式新能源并网变流器有源阻尼控制. 电源学报, 2026 , 24 (6) : 232 -241 . DOI: 10.13234/j.issn.2095-2805.2026.6.232

Zeming GAO, Lun CHENG, Liqiang SUN, Linhao CHEN. Active Damping Control of Distributed New Energy Grid-connected Converters Considering Multi-loop Coupling[J]. Journal of Power Supply, 2026 , 24 (6) : 232 -241 . DOI: 10.13234/j.issn.2095-2805.2026.6.232

基金

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国家电网有限公司科技资助项目(5204BB23000U)

参考文献

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2026年第24卷第6期

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文章信息

doi: 10.13234/j.issn.2095-2805.2026.6.232

接收时间：2024-07-05
首发时间：2026-10-29
出版时间：2026-06-30

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出版历史

收稿日期：2024-07-05
修回日期：2024-07-27
录用日期：2024-07-31

基金

State Grid Corporation of China Technology Project(5204BB23000U)

国家电网有限公司科技资助项目(5204BB23000U)

作者信息

^1.国网河北省电力有限公司，石家庄　050021

^2.浙江大学电气工程学院，杭州　310058

通讯作者:

高泽明（1981—　），男，通信作者，硕士，正高级工程师。研究方向：新能源并网控制技术，电力系统运行与电网规划技术。E-mail：cknjut@163.com。

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https://castjournals.cast.org.cn/joweb/dyxb/CN/10.13234/j.issn.2095-2805.2026.6.232

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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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