Centralized photovoltaic power stations are also a type of photovoltaic power station. They use deserts or Gobi to build large-scale photovoltaic power stations, directly connect power generation to the public power grid, and connect to the high-voltage transmission system to supply long-distance loads. Centralized large-scale grid-connected photovoltaic power stations are generally national-level power stations. The main feature is that the generated energy is directly transmitted to the power grid, and the power grid is uniformly allocated to supply power to users. So, what are the advantages and disadvantages of centralized photovoltaic power stations?
1. The site selection is more flexible, the stability of photovoltaic output has increased, and the peak-cutting effect is obvious.
2. The operation mode is more flexible. Compared with distributed photovoltaics, it can more conveniently control reactive power and voltage, and it is easy to achieve grid frequency regulation.
3. The construction period is short, the environmental adaptability is strong, and there is no need for raw material guarantees such as water sources and coal transportation. The operating cost is low, it is easy to centrally manage, and it is less restricted by space, and it can be easily expanded.
Disadvantages of centralized photovoltaic power stations
1. It needs to rely on long-distance transmission lines to transmit electricity to the grid. At the same time, it is also a large source of interference to the power grid. Problems such as transmission line loss, voltage drop, and reactive power compensation will be prominent.
2. Large-capacity photovoltaic power stations are realized by combining multiple conversion devices. The coordinated work of these devices needs to be managed in the same way. The technology in this area is not yet mature.
3. To ensure the safety of the power grid, large-capacity centralized photovoltaic access requires new functions such as LVRT, which often conflicts with islands.
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