A hybrid microgrid application platform and its control method

Abstract

The invention relates to the field of new energy power generation, and particularly discloses a hybrid microgrid application platform and a control method of the hybrid microgrid application platform. The application platform comprises a microgrid system, a grid connection switch and a control system, the microgrid system comprises a direct-current microgrid and an alternating-current microgrid, the direct-current microgrid comprises a direct-current interval device, the alternating-current microgrid comprises an alternating-current interval device, the direct-current interval device and the alternating-current interval device are connected in parallel and connected to a microgrid alternating-current bus, and the microgrid alternating-current bus is connected with a power distribution network bus through the grid connection switch; the control system comprises a monitoring layer and a master control layer. Fast response of energy can be met through the hybrid microgrid application platform, the control accuracy is high, a system is flexible and stable, meanwhile, switching between a grid connection mode and an island mode can be completed by the microgrid system with the control method of the hybrid microgrid application platform without any supplementary means, and control over peak load shaving, power smoothness, time shifting, electric energy quality improvement and the like can be achieved at the same time in the grid connection mode.

Description

technical field [0001] The invention relates to the field of new energy power generation, in particular to a hybrid micro-grid application platform and a control method thereof. Background technique [0002] Compared with traditional thermal power generation and hydropower generation, due to the volatility of wind energy and solar energy, they cannot meet the requirements of multi-access points and high penetration rates to be connected to the traditional power grid. This has become a major obstacle to the large-scale development of renewable energy in my country. . There is a two-way flow of energy between the distributed power generation unit composed of wind energy and solar energy and the traditional large power grid, and the energy on the busbar of the energy storage unit flows in two directions. In addition, the energy transmission between the distributed power generation unit and the load, and the response speed also exist All of these differences increase the operati...

AI Technical Summary

Problems solved by technology

[0010] The purpose of the present invention is to provide a hybrid micro-grid application platform and its control method to overcome the inability of the micro-grid system in the prior art to realize peak shaving, power smoothing, Multiple functions such as time shifting and power quality improvement

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