Centralized photovoltaic power station is also a kind of photovoltaic power station. The desert is used to build a large photovoltaic power station centrally, and the power generation is directly integrated into the public power grid, and connected to the high-voltage transmission system to supply the long-distance load.

Centralized large-scale grid-connected photovoltaic power stations are generally national power stations. The main feature is that the power generated energy is directly transmitted to the power grid, and it is uniformly deployed by the power grid to supply power to users. So, what are the advantages and disadvantages of centralized photovoltaic power stations?

Advantages of centralized photovoltaic power stations

1. The site selection is more flexible, the photovoltaic output stability has increased, and the pecutting effect is obvious.

2. The operation mode is relatively flexible. Compared with distributed photovoltaic, it can more easily facilitate reactive power and voltage control, and easily realize the power grid frequency adjustment.

3. Short construction cycle, strong environmental adaptability, no need for water source, coal transportation and other raw material guarantee, low operation cost, easy to centralized management, small space restrictions, can be easy to achieve capacity expansion.

Disadvantages of centralized photovoltaic power stations

1. It needs to rely on long-distance transmission lines to send power to the network, and it is also a large interference source of the power grid. Problems such as the loss, voltage drop and reactive power compensation of the transmission lines will be prominent.

2. Large-capacity photovoltaic power stations are realized by the combination of multiple transformation devices. The collaborative work of these devices requires the same management. At present, the technology in this aspect is not yet mature.

3. In order to ensure the security of the power grid, large-capacity centralized pv access needs new functions such as LVRT, which often conflicts with isolated islands.