Wind-solar-diesel storage type microgrid coordinated control optimization method

Abstract

The invention discloses a wind-solar-diesel storage type microgrid coordinated control optimization method, which is characterized in that firstly an operating mode of a microgrid is judged in real time in real time according to microgrid PCC point switch information and scheduling information; then the number of on-off times of a diesel engine is reduced in allusion to different operating modes such as a grid-connected operating mode, an off-grid operating mode, a grid-connected-to-off-grid operating mode and an off-grid-to-grid-connected operating mode; the number of charge-discharge conversion times of energy storage is reduced; and local consumption of wind and solar resources is an optimization control target, and a corresponding control sequence of distributed power supplies is provided. The method disclosed by the invention can ensure safe and stable running of the wind-solar-diesel storage type microgrid in different operating modes when coordinated control measures are made in allusion to the wind-solar-diesel storage type microgrid, and gives consideration to the economy of the system at the same time.

Description

technical field [0001] The invention relates to the technical field of micro-grid control, in particular to a coordinated control optimization method for a wind-solar-diesel-storage micro-grid. Background technique [0002] Microgrid is a small-scale power generation and distribution system composed of various distributed power sources, energy storage systems, energy conversion devices, loads, and monitoring and protection devices. It is an independent autonomous system capable of self-control, protection and management. The development of microgrid is still in the initial stage in my country, but the characteristics of microgrid adapt to the needs and direction of my country's electric power development, and has broad development prospects. The guidelines for new energy micro-grid demonstration projects have been issued. Micro-grids are the basic core unit of the Energy Internet. With the help of the energy Internet and the reform of the new power system, the microgrid wil...

AI Technical Summary

Problems solved by technology

Due to the complex composition and operation of the microgrid system, this poses new challenges to the coordinated control of the microgrid.

[0004] At present, the research on the coordinated control of wind, diesel and storage microgrid focuses on the control mode, and lacks the consideration of system economy. Therefore, it is necessary to study a coordinated control method that takes into account the system economy.

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