Energy storage capacity optimization method for wind-solar combined power generation system

Abstract

The invention relates to an energy storage capacity optimization method for a wind-solar combined power generation system, and is used for determining the reference output power for storage battery energy storage configuration. The method comprises the following steps: step 1), constructing a wind-solar combined system power generation model; step 2), defining two types of control indexes, including a fluctuation stabilization index and an effect evaluation index; and step 3), selecting an optimal fluctuation stabilization control method according to the stabilization index and the effect evaluation index, and obtaining the system reference output power. Compared with the prior art, the energy storage capacity optimization method for the wind-solar combined power generation system providedby the invention has the advantages of being quantitative and accurate in evaluation, good in optimization effect and the like.

Description

technical field [0001] The invention relates to the field of power system energy storage control, in particular to an energy storage capacity optimization method of a wind-solar combined power generation system. Background technique [0002] With the continuous development of social industries and the rapid growth of the global economy, the demand for energy in countries around the world is also increasing. The development and utilization of new energy has become an important strategic deployment for the sustainable development of energy in countries all over the world. As sustainable and clean energy, wind energy and solar energy have received widespread attention from the whole society. However, the output power fluctuations caused by changes in natural conditions such as light intensity, temperature, and wind speed pose a huge threat to the safe and stable operation of renewable energy grid-connected. Therefore, the research on smoothing the output power fluctuation of ...

AI Technical Summary

Problems solved by technology

[0003] At present, there are mainly three methods to stabilize the fluctuation of renewable energy output power: one is to take into account the optimal dispatch of renewable energy system power generation. The second is to adopt an effective control strategy to adjust the operation mode of the renewable energy power generation system to achieve the purpose of stabilizing output power fluctuations. At present, it is mainly used in the field of wind power. The influence of wind speed, the control method is more complex and at the expense of wind energy capture efficiency

Images