基于可调虚拟阻抗的“柔-储-充”装置电池优化运行策略

doi:10.11930/j.issn.1004-9649.202405139

中国电力 ›› 2025, Vol. 58 ›› Issue (6): 145-155.DOI: 10.11930/j.issn.1004-9649.202405139

基于可调虚拟阻抗的“柔-储-充”装置电池优化运行策略

秦昆¹(), 渠志江¹(), 韩建伟¹(), 许涛²(), 高峰², 迟晓莉²

1. 国网山东省电力公司济宁供电公司，山东济宁　272000
2. 山东大学，山东济南　250061

收稿日期:2024-05-31 发布日期:2025-06-30 出版日期:2025-06-28
作者简介:
秦昆（1989），男，硕士，高级工程师，从事新能源并网与调度运行研究，E-mail：450751450@qq.com
渠志江（1975），男，学士，高级工程师，从事电力系统继电保护与控制研究，E-mail：quzhijiang007@sina.com
韩建伟（1981），男，高级工程师，从事电网调度运行控制研究，E-mail：151721598@qq.com
许涛（1991），男，通信作者，副研究员，从事电力电子、新型电力系统研究，E-mail：txu@sdu.edu.cn
基金资助:
国网山东省电力公司科技项目（高比例光伏配电网“柔-储-充”一体化装置及运行控制技术研究，520606240003）；国家自然科学基金资助项目（基于PWM参数协同调控的并网变流器集群优化运行方法及技术，52207213）。

Battery Optimization Operation Strategy for the "SOP-Storage-Charger" Devices Based on Adjustable Virtual Impedance

QIN Kun¹(), QU Zhijiang¹(), HAN Jianwei¹(), XU Tao²(), GAO Feng², CHI Xiaoli²

1. State Grid Shandong Jining Electric Power Supply Co., Ltd., Jining 272000, China
2. Shandong University, Jinan 250061, China

Received:2024-05-31 Online:2025-06-30 Published:2025-06-28
Supported by:
This work is supported by Science and Technology Project of State Grid Shandong Electric Power Company (Research on Integrated Device and Operation Control Technology of "SOP-Storage-Charge" for High Proportion Photovoltaic Distribution Network, No.520606240004), National Natural Science Foundation of China (Optimized Operation of Multiple Grid-Tied Converters Based on Cordinated Control of Pulse Widthc Modulation, No.52207213).

摘要/Abstract

摘要：

“柔-储-充”（SOP-storage-charger，SSC）装置集柔性互联、储能、充电于一体，可平抑配电网能量波动，然而其在运行过程中需要频繁调用储能资源，导致电池大功率充放电，影响电池寿命。为此，提出一种基于可调虚拟阻抗的SSC装置电池优化运行策略。首先，将柔性互联、储能、充电均等效为虚拟阻抗，分析了配电网能量波动过程中的多种能量通路，通过调节虚拟阻抗有效疏导波动能量。在此基础上，针对SSC运行特点，分别提出了各部分可调虚拟阻抗控制方法，并分析了关键参数的物理意义及设计原则。最后，基于硬件在环系统搭建实验平台验证所提策略。结果表明，所提方法能够在平抑配电网电压波动的同时降低储能系统的充放电电流，提高电池寿命。

关键词: 新能源配电网, “柔-储-充”装置, 储能, 虚拟阻抗, 电池寿命, 充放电

Abstract:

The soft open points-storage-charger (SSC) device integrates flexible interconnection, energy storage, and charging functions, which can mitigate energy fluctuations in the distribution network. However, during its operation, the frequent utilization of energy storage resources leads to high-power charging and discharging of batteries, thereby affecting their lifespan. To address this issue, a battery optimization operation strategy for the SSC device based on adjustable virtual impedance is proposed. Firstly, the functions of flexible interconnection, energy storage, and charging are all equivalently modeled as virtual impedances. The various energy pathways during the energy fluctuation process in the distribution network are analyzed. By adjusting the virtual impedance, the fluctuating energy can be effectively managed. Based on this, considering the operational characteristics of the SSC device, control methods for the adjustable virtual impedance of each part are proposed, and the physical significance and design principles of key parameters are analyzed. Finally, an experimental platform is built based on a hardware-in-the-loop (HIL) system to verify the theoretical results. The research demonstrates that the proposed method can mitigate voltage fluctuations in the distribution network while reducing the magnitude of charging and discharging currents in the energy storage system, thereby improving battery lifespan.

Key words: renewable energy distribution network, SOP-storage-charger device, energy storage, virtual impedance, battery lifespan, charging and discharging

秦昆, 渠志江, 韩建伟, 许涛, 高峰, 迟晓莉. 基于可调虚拟阻抗的“柔-储-充”装置电池优化运行策略[J]. 中国电力, 2025, 58(6): 145-155.

QIN Kun, QU Zhijiang, HAN Jianwei, XU Tao, GAO Feng, CHI Xiaoli. Battery Optimization Operation Strategy for the "SOP-Storage-Charger" Devices Based on Adjustable Virtual Impedance[J]. Electric Power, 2025, 58(6): 145-155.

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链接本文: https://www.electricpower.com.cn/CN/10.11930/j.issn.1004-9649.202405139

https://www.electricpower.com.cn/CN/Y2025/V58/I6/145

图/表 16

图 1 SSC装置接入配电网示意

Fig.1 Diagram of the SSC device connected to the distribution network

图 2 SSC装置拓扑结构

Fig.2 Topology diagram of the SSC device

图 3 SSC装置可调虚拟阻抗示意

Fig.3 Diagram of the adjustable virtual impedance of the SSC device

图 4 SOP装置输出功率控制侧主要控制框图

Fig.4 Main control block diagram of the output power control side of the SOP

图 5 SOP装置直流电压控制侧主要控制框图

Fig.5 Main control block diagram of the DC voltage control side of the SOP

图 6 电池储能系统主要控制框图

Fig.6 Main control block diagram of the battery energy storage system

图 7 充电系统主要控制框图

Fig.7 Main control block diagram of the charging system

图 8 基于HIL的实验平台

Fig.8 Experimental platform based on HIL

图 9 HIL内部电路结构示意

Fig.9 Schematic diagram of the internal circuit structure of HIL

表 1 SSC装置的主要控制参数

Table 1 Main control parameters of the SSC device

参数		数值
柔性互联电压控制环P调节器		5
柔性互联电压控制环I调节器		0.1
柔性互联电流控制器环P调节器		0.05
柔性互联电流控制器环I调节器		10
柔性互联虚拟电阻R_sop/Ω		0.1~10，可调
柔性互联虚拟电感L_sop/mH		1
储能电流控制环P调节器		0.01
储能电流控制环I调节器		1
充电电流控制环P调节器		0.01
充电电流控制环I调节器		1

图 10 脉冲型功率源输出功率波形

Fig.10 Waveform of the output power of a pulse-type power source

图 11 两端配电网相电压峰值变化轨迹

Fig.11 Trajectory of the peak value changes of phase voltage for the two-end distribution network

图 12 接入SSC装置前两端配电网电压波形

Fig.12 Voltage waveform of the two-end distribution network before the connection of the SSC device

图 13 采用传统方法时的u1、iB、i1波形

Fig.13 Waveform diagram of the u1, iB, and i1 when using traditional methods

图 14 加入SOP、储能虚拟阻抗控制后的u1、iB、i1波形

Fig.14 Waveform diagram of the u1, iB, and i1 after using virtual impedance control in SOP and battery storage system

图 15 加入SOP、储能、充电虚拟阻抗控制的u1、iB、i1、iC波形

Fig.15 Waveform diagram of the u1, iB, i1 and iC after using virtual impedance control in SOP, battery storage system and charger

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基于可调虚拟阻抗的“柔-储-充”装置电池优化运行策略

Battery Optimization Operation Strategy for the "SOP-Storage-Charger" Devices Based on Adjustable Virtual Impedance

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基于可调虚拟阻抗的“柔-储-充”装置电池优化运行策略

Battery Optimization Operation Strategy for the "SOP-Storage-Charger" Devices Based on Adjustable Virtual Impedance

RichHTML

PDF (PC)

可视化

摘要/Abstract

引用本文

使用本文

图/表 16

参考文献 29

相关文章 15

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