基于母线电压分层的直流微网系统协调控制

doi:10.11930/j.issn.1004-9649.202012071

中国电力 ›› 2022, Vol. 55 ›› Issue (2): 166-171,180.DOI: 10.11930/j.issn.1004-9649.202012071

基于母线电压分层的直流微网系统协调控制

林其友¹, 蒋文良², 李媛媛², 汪冬冬², 牟思南³

1. 国网安徽省电力有限公司芜湖供电公司，安徽芜湖 241000;
2. 安徽工程大学电气工程学院，安徽芜湖 241000;
3. 中国城市能源变革产业发展联盟，北京 100123

收稿日期:2020-12-15 修回日期:2022-01-06 出版日期:2022-02-28 发布日期:2022-02-23
作者简介:林其友（1976—），男，硕士，高级工程师（教授级），从事电网规划、经济运行及微电网控制分析研究，E-mail：njhnlqy@sina.com;蒋文良（1995—），男，硕士，从事微电网下垂控制研究，E-mail：1466838363@qq.com;李媛媛（1994—），女，硕士，从事微电网协同控制研究，E-mail：2723374588@qq.com
基金资助:
国家自然科学基金资助项目（基于不变网络的大型分布式信息系统故障检测与定位研究，61572032）。

Coordinated Control of DC Microgrid System Based on Bus Voltage Stratification

LIN Qiyou¹, JIANG Wenliang², LI Yuanyuan², WANG Dongdong², MOU Sinan³

1. State Grid Wuhu Electric Power Co., Ltd., Wuhu 241000, China;
2. College of Electrical Engineering, Anhui Polytechnic University, Wuhu 241000, China;
3. China City Energy Development Industrial Alliance, Beijing 100123, China

Received:2020-12-15 Revised:2022-01-06 Online:2022-02-28 Published:2022-02-23
Supported by:
This work is supported by the National Natural Science Foundation of China (Invariant Networks-based Fault Detection and Location for Large Scale Distributed Information Systems, No.61572032)

摘要/Abstract

摘要： 在直流微网系统中，各分布式单元通常以分散的方式接入直流母线，而分布式电源和负荷易受到外界环境影响，从而影响直流微网母线电压稳定性。因此设计一种基于母线电压分层的直流微网系统协调控制策略，构建以光伏发电为主的直流微网系统结构，将母线电压划分为5个层级，针对不同层级对应的运行模式，研究分布式单元运行方式及其控制策略，最后通过仿真实验验证了所提控制策略在因环境因素变化导致光伏发电波动和负荷波动的情况下对抑制系统母线电压波动的有效性。

关键词: 直流微网, 电压分层, 协调控制, 能量调度, 运行模式

Abstract: In a DC microgrid system, distributed units are usually connected to the DC bus in a decentralized manner, and distributed power sources and loads are easily affected by the external environment, which degrades the bus voltage stability of the DC microgrid. In order to solve this problem, a coordinated control strategy for DC microgrid system based on bus voltage stratification is proposed in this paper. The strategy builds a DC microgrid system structure mainly based on photovoltaic power generation, and then divides the bus voltage into five levels. Under the corresponding operation mode of each level, the operation mode and the control strategy are studied. Finally, the effectiveness of the proposed control strategy in suppressing the fluctuation of the system bus voltage is verified when the fluctuation of the photovoltaic power generation and the load is caused by the change of environmental factors.

Key words: DC microgrid system, voltage stratification, coordinated control, energy scheduling, operation mode

林其友, 蒋文良, 李媛媛, 汪冬冬, 牟思南. 基于母线电压分层的直流微网系统协调控制[J]. 中国电力, 2022, 55(2): 166-171,180.

LIN Qiyou, JIANG Wenliang, LI Yuanyuan, WANG Dongdong, MOU Sinan. Coordinated Control of DC Microgrid System Based on Bus Voltage Stratification[J]. Electric Power, 2022, 55(2): 166-171,180.

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基于母线电压分层的直流微网系统协调控制

Coordinated Control of DC Microgrid System Based on Bus Voltage Stratification

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基于母线电压分层的直流微网系统协调控制

Coordinated Control of DC Microgrid System Based on Bus Voltage Stratification

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