Operation Control Strategy of Low Voltage Direct Current Supply and Utilization System
- Resource Type
- Conference
- Authors
- Tian, Chunyi; Sun, Kaiqi; Sun, Yuanyuan; Pang, Yanqing; An, Peng; Diao, Shoubin
- Source
- 2022 China International Conference on Electricity Distribution (CICED) Electricity Distribution (CICED), 2022 China International Conference on. :1548-1553 Sep, 2022
- Subject
- Engineering Profession
Power, Energy and Industry Applications
Low voltage
Renewable energy sources
Simulation
Switches
Current supplies
Control systems
Market research
low voltage direct current supply and utilization system
Coordinated control
operating mode division
pure DC ecology
- Language
- ISSN
- 2161-749X
The trend of low voltage integration and direct current (DC) form of renewable energy and flexible loads promote the development of the low voltage direct current supply and utilization system (LVDCSUS). However, the operation characteristics and operating modes analysis of the LVDCSUS have not received too much attention. This paper proposes four typical operating modes of the LVDCSUS. With the analysis of the operating characteristics and application scenarios of the system, the switching conditions are proposed between different operating modes considering the DC bus voltage as the control goal. In addition, the corresponding voltage coordination control strategies of the four operating modes are proposed. These strategies can ensure that the DC bus voltage does not cross the line when the environment or load changes and works stably in the corresponding operating mode. The simulation results verify the validity and feasibility of the mode division and the proposed control strategy.