电源学报

基于SOGI和CDCCF的复合前置滤波锁相环研究

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石径 ¹ , 杨军 ² , 文龙 ¹ , 沈俊庆 ¹ , 车广磊 ¹ , 李淞轩 ³

电源学报 | 新能源系统 2025,23(6): 237-246

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电源学报 |新能源系统 2025 , 23 (6) : 237 -246

基于SOGI和CDCCF的复合前置滤波锁相环研究

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石径¹, 杨军², 文龙¹, 沈俊庆¹, 车广磊¹, 李淞轩³

作者信息

^1.青海电研科技有限责任公司，西宁　810000

^2.国网青海省电力公司电力科学研究院，西宁　810000

^3.重庆大学电气工程学院，重庆　400044

通讯作者:

李淞轩（1998—　），男，通信作者，硕士研究生。研究方向：光伏逆变器低电压穿越。E-mail：445479301@qq.com。

作者简介:

石径（1975—　），男，本科，高级工程师。研究方向：电力系统及新能源。E-mail：13997236586@163.com。

杨军（1974—　），男，硕士，高级工程师。研究方向：新能源与储能技术。E-mail：13109743069@163.com。

文龙（1988—　），男，本科，助理工程师。研究方向：新能源场站检测。E-mail：414156550@qq.com。

沈俊庆（1986—　），男，本科，技师。研究方向：新能源现场测试。E-mail：154087569@qq.com。

车广磊（1998—　），男，本科。研究方向：线路参数检测。E-mail：438974874@qq.com。

Research on Prefiltering Phase-locked Loop Based on SOGI and CDCCF

Jing SHI¹, Jun YANG², Long WEN¹, Junqing SHEN¹, Guanglei CHE¹, Songxuan LI³

Affiliations

^1.Electrical Research Science and Technology Co., Ltd, Xining 810000, China

^2.Electric Power Research Institute, State Grid Qinghai Electric Power Company, Xining 810000, China

^3.College of Electrical Engineering, Chongqing University, Chongqing 400044, China

出版时间: 2025-10-30 doi: 10.13234/j.issn.2095-2805.2025.6.237

文章导航

摘要

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锁相环PLL（phase-locked loop）是控制光伏逆变器实现并网同步的重要结构之一。针对αβ型锁相环在电网发生不平衡故障和谐波干扰时检测频率和相位误差较大的问题，提出一种新型的基于交叉解耦复系数滤波器CDCCF（cross decoupling complex coefficient filter）与二阶广义积分器SOGI（second-order generalized integrator）这2种结构复合前置的PLL，即PFPLL（prefiltering PLL）。将具有特定次数谐波消除能力的二阶广义积分器多重消谐结构作为PFPLL的前置滤波环节；将具有反馈回路的CDCCF作为PFPLL的信号解耦环节，提出的PFPLL结构可消除电压不平衡和谐波分量，实现频率自适应。搭建了仿真模型和实验平台，并验证了PFPLL结构的滤波能力。

关键词

电网电压不平衡 / 谐波畸变 / 二阶广义积分器 / 复系数滤波器

Abstract

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Phase-locked loop (PLL) is one of the important structures to control photovoltaic inverters to realize grid-connected synchronization. Aimed at the problem that αβ-PLL will have large errors in the detection frequency and phase when unbalanced faults and harmonic interference occur in power grid, a novel prefiltering PLL (PFPLL) based on cross decoupling complex coefficient filter (CDCCF) and second-order generalized integrator (SOGI) is proposed in this paper. The SOGI with the capability of eliminating specific-order harmonics is used as the prefiltering link of PFPLL, and the CDCCF with a feedback loop is used as the signal decoupling link of PFPLL. The proposed PFPLL structure can eliminate voltage imbalance and harmonic components, thus realizing the frequency self-adaptation. A simulation model and an experimental platform were built, and results verified the filtering capability of PFPLL.

Key words

Grid voltage imbalance / harmonic distortion / second-order generalized integrator (SOGI) / complex coefficient filter

引用本文

石径, 杨军, 文龙, 沈俊庆, 车广磊, 李淞轩. 基于SOGI和CDCCF的复合前置滤波锁相环研究. 电源学报, 2025 , 23 (6) : 237 -246 . DOI: 10.13234/j.issn.2095-2805.2025.6.237

Jing SHI, Jun YANG, Long WEN, Junqing SHEN, Guanglei CHE, Songxuan LI. Research on Prefiltering Phase-locked Loop Based on SOGI and CDCCF[J]. Journal of Power Supply, 2025 , 23 (6) : 237 -246 . DOI: 10.13234/j.issn.2095-2805.2025.6.237

基金

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国网青海省电力有限公司科技资助项目(SGTYHT/20-JS-224)

参考文献

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参考文献引证文献

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2025年第23卷第6期

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文章信息

doi: 10.13234/j.issn.2095-2805.2025.6.237

接收时间：2023-02-08
首发时间：2026-10-26
出版时间：2025-10-30

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出版历史

收稿日期：2023-02-08
修回日期：2023-06-23
录用日期：2023-07-29

基金

Science and Technology Fund Project of State Grid Qinghai Electric Power Company(SGTYHT/20-JS-224)

国网青海省电力有限公司科技资助项目(SGTYHT/20-JS-224)

作者信息

^1.青海电研科技有限责任公司，西宁　810000

^2.国网青海省电力公司电力科学研究院，西宁　810000

^3.重庆大学电气工程学院，重庆　400044

通讯作者:

李淞轩（1998—　），男，通信作者，硕士研究生。研究方向：光伏逆变器低电压穿越。E-mail：445479301@qq.com。

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https://castjournals.cast.org.cn/joweb/dyxb/CN/10.13234/j.issn.2095-2805.2025.6.237

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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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