【论文推荐】日本工学院大学新井淳一等：独立型微电网中构网逆变器与跟网逆变器协调控制研究

摘要

在配电网中，电池储能系统、燃料电池和光伏发电系统的使用是实现二氧化碳减排的重要手段。这些电源都需要逆变器以实现与交流电网的连接。然而，子网络（例如包含逆变器电源的微电网）可能与公用电网断开，并在长时间停电期间以独立模式运行。本研究主要针对无需同步发电机的逆变器电源独立微电网，提出了一种新的微电网逆变器控制方法。在该方法中，单个构网逆变器作为主电源运行以实现频率和电压的同步控制，其他逆变器（称为跟网逆变器）作为具有有功和无功功率控制的辅助电源运行。本研究进一步对能量管理系统中的必要功能进行了检验，并通过仿真演示了微电网中所有逆变器的协调运行。

Coordinated control between a grid forming inverter and grid following inverters suppling power in a standalone microgrid

独立型微电网中构网逆变器与跟网逆变器协调控制研究

Junichi Arai¹, Yasuhiro Taguchi¹

(1.Kogakuin University, 1-24-2 Nishi-Shinjuku, Shinjuku, Tokyo 163-8677, Japan Kanagawa, Japan 2.Energy and Environment Technology Research Institute, 1-22-2 Nishi-Waseda Shinjuku, Nishi- Waseda East Wing 106, Tokyo 169-0051, Japan)

Abstract

Battery energy storage systems, fuel cells, and photovoltaic generators are being adopted in distribution networks to achieve CO2 emission reduction. These power sources require inverters to connect to AC networks. However, sub- networks, such as a microgrids containing inverter power sources, may be disconnected from the utility network and operated in a standalone mode during extended blackouts. This study focuses on a standalone microgrid supplied by inverter power sources without a synchronous generator and proposes a new microgrid inverter control. In this inverter control, a single grid forming inverter is operated as a master power source to determine frequency and voltage, and other inverters, called grid following inverters, are operated as subordinate power sources with active and reactive power control. The necessary functions in the energy management system are examined, and the coordinated operation of all inverters in the microgrid is demonstrated via simulation.

Keywords

Inverter control, Microgrid, Standalone operation, Energy management system, Grid forming inverter, Grid following inverter.

Fig.1 Inverter circuit

Fig.2 Microgrid inverter-supplied power diagram

Fig.3 Control block of INV_1

Fig.4 Control block of INV_2 and INV_3

Fig.5 Load increase (Case 1)

Fig.6 Change of P order (Case 2)

Fig.7 Change of Q order (Case 3)

Fig.8 Load increase with three inverters (Case 4)

Fig.9 EMS coordinated control

Fig.10 Active power with coordinated control

本文引文信息

Junichi A, Yasuhiro T (2022) Coordinated control between a grid forming inverter and grid following inverters suppling power in a standalone microgrid. Global Energy Interconnection, 5(3): 259-265

新井淳一，田口康裕 (2022) 独立型微电网中构网逆变器与跟网逆变器协调控制研究. 全球能源互联网（英文）, 5(3): 259-265

Biographies

Junichi Arai

Junichi Arai received BS and MS degrees in Electrical Engineering from Waseda University in 1970 and 1972, respectively. He received a doctorate degree in Engineering from Tokyo Metropolitan University in 1995 in Japan. He joined Toshiba Corporation in 1972 as a power systems research engineer. He became a professor in the Engineering Department of Kogakuin University, Tokyo, in 2006. He is now a professor emeritus at Kogakuin University and executive researcher at the Energy and Environment Technology Research Institute. His research focuses on power system control, power electronics applications, microgrid control, and power quality. He is a fellow of IET, C. Eng., senior member of IEEE, and fellow of IEEJ.

Yasuhiro Taguchi

Yasuhiro Taguchi received BS and MS degrees in Electrical Engineering from Waseda University in 1979 and 1981, respectively. He joined Toshiba Corporation in 1981, where he was engaged in research on power system analysis, including grid stabilization and evaluation of microgrids and smart grids. He began conducting research on microgrids at the Energy and Environment Technology Research Institute in 2020. His research focuses on power system stabilization, monitoring and control, and microgrid analysis and evaluation.

编辑：王彦博

审核：王伟

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Coordinated control between a grid forming inverter and grid following inverters suppling power in a standalone microgrid

【论文推荐】日本工学院大学 新井淳一等：独立型微电网中构网逆变器与跟网逆变器协调控制研究

郑重声明

【论文推荐】日本工学院大学新井淳一等：独立型微电网中构网逆变器与跟网逆变器协调控制研究