What are the components of a distributed photovoltaic (PV) power station system?
The basic equipment of a distributed photovoltaic power generation system includes photovoltaic cell modules, photovoltaic array brackets, DC combiner boxes, DC distribution cabinets, grid-connected inverters, AC distribution cabinets, and other equipment, as well as power supply system monitoring devices and environmental monitoring devices.
Its operating mode is that, under the condition of solar radiation, the solar cell module array of the photovoltaic power generation system converts solar energy into electrical energy, which is then sent to the DC distribution cabinet through the DC combiner box. The grid-connected inverter then converts the electrical energy into AC power to supply the building's own load. Excess or insufficient power is regulated by connecting to the power grid.
Characteristics of distributed photovoltaic power station systems
1. The systems are independent of each other and can be controlled independently, avoiding large-scale power outages and ensuring high safety;
2. It compensates for the instability of the main power grid, continuing to supply power in the event of an accident, thus becoming an indispensable and important supplement to centralized power supply;
3. It can monitor the quality and performance of regional power in real time, making it ideal for supplying electricity to residents in rural areas, pastoral areas, mountainous areas, and developing large, medium, and small cities or commercial areas, greatly reducing environmental pressure;
4. Low or even zero transmission and distribution losses, eliminating the need for substations, reducing or avoiding additional transmission and distribution costs, and lowering civil engineering and installation costs;
5. Excellent peak-shaving performance and simple operation;
6. Due to the small number of systems involved in operation, startup and shutdown are quick, making it easy to achieve full automation.
Distributed photovoltaic (PV) power generation systems can be built in rural areas, pastoral areas, mountainous areas, and near developing large, medium, and small cities or commercial areas to meet the electricity needs of local users. It is a new type of power generation and comprehensive energy utilization method with broad development prospects. It advocates the principles of local power generation, local grid connection, local conversion, and local use, which not only effectively increases the power generation of PV power plants of the same scale but also effectively solves the problems of power loss during voltage boosting and long-distance transmission.
