Method and device for energy optimization of park energy system

Abstract

The application provides a method and device for energy optimization of park energy systems, which relate to the field of energy. The method includes: calculating and obtaining the theoretical optimal values ​​of the respective output powers of the photovoltaics and the wind turbines according to the predicted value of the load demand on the user side, the predicted value of the photovoltaic output power, the predicted value of the output power of the wind turbine, and the optimization constraints, and according to the respective output powers of the photovoltaics and the wind turbine Calculate the operating cost of the energy system in the park and the actual optimal values ​​of the respective output powers of photovoltaics and wind turbines. According to the actual optimal values ​​of the respective output powers of photovoltaics and wind turbines, the actual output powers of photovoltaics and wind turbines are controlled to The utilization rate of the distributed power source is optimized and the operating cost of the park energy system is minimized. The method of the present invention maximizes the utilization rate of distributed power sources while minimizing the cost, reduces the curtailment rate of wind and light, optimizes the energy of the energy system of the park as a whole, and has high practical value.

Description

technical field [0001] The invention relates to the field of energy, in particular to a method and device for energy optimization of park energy systems. Background technique [0002] "Source-Network-Load-Storage" is an important way to realize the Energy Internet. Its operation mode is a unified overall solution operation mode including "power supply", "grid", "load" and "energy storage". Mainly for "source-source" complementarity, "source-network" coordination, "network-load-storage" interaction. The "source-network-load-storage" model based on the Energy Internet can be applied to the entire energy industry, and the information interaction is more diverse. [0003] The park microgrid is a typical energy Internet "source-grid-load-storage" model, and it is an autonomous system with self-control and self-energy management. It can be connected to the external power grid or run in isolation. The park energy system includes dispatchable units, energy storage systems, and dem...

AI Technical Summary

Problems solved by technology

[0004] However, at present, the energy coordination and optimization of the microgrid in the park is not enough, and there are problems such as high operating costs of the park energy system, low utilization rate of distributed generation (DG) in the park, and high wind and light curtailment rates.

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