A Static Optimization Method for External Transmission Capacity of Photovoltaic Power Plant Group Based on Energy Storage

Abstract

The invention relates to a photovoltaic power station group output power transmission capacity static optimization method based on stored energy. In order to solve the problems that current photovoltaic power station group output power capacity is not reasonable in distribution and the using rate is low, the photovoltaic power station group output power transmission capacity static optimization method is based on photovoltaic power station active power output characteristics and load characteristics, factors such as power transmission earnings, power transmission line building cost, energy storage system cost, reduction of reserve capacity and environmental influences are comprehensively considered, an optimization function with maximization of the comprehensive investment revenue of a power transmission system as a target is built, and the photovoltaic power station output power transmission capacity is accordingly optimized. The photovoltaic power station group output power transmission capacity static optimization method has the advantages of being scientific, reasonable, high in applicability, maximized in comprehensive revenue and the like.

Description

technical field [0001] The invention relates to an energy storage-based method for statically optimizing the power transmission capacity of photovoltaic power station groups. Background technique [0002] With the rapid development of the economy, people are facing enormous pressure on energy and environment at the same time. As a renewable energy source, solar energy has the characteristics of safety, cleanliness and wide distribution, and has attracted more and more attention. Large-scale centralized photovoltaic grid-connected power generation systems are one of the development trends of solar power generation. Most of them are distributed in remote areas with relatively rich and stable solar energy resources, far away from the load center, and connected to the system through high-voltage, long-distance transmission lines. [0003] Solar energy is different from other renewable energy sources such as wind energy and water energy, and has its unique natural characteristic...

AI Technical Summary

Problems solved by technology

If the capacity of the transmission line is configured according to the installed capacity, this will lead to a low utilization level of the transmission line; if the capacity of the transmission line is reduced, it is very likely that the power cannot be sent out in time during the peak period of photovoltaic power generation, resulting in the phenomenon of "abandoning light and limiting electricity"

[0005] For large-scale photovoltaic power station groups, the construction investment of photovoltaic power station is large, but the conversion efficiency of solar energy is not high

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