Method for designing micro-grid system

Abstract

The invention discloses a method for designing a micro-grid system. The method for designing the micro-grid system includes a scheme for designing a micro-grid access distribution network, a scheme for designing a micro-grid network structure and a scheme for designing distributed powers in a micro-grid. As for the scheme for designing the micro-grid access distribution network, the mode is first determined to be either an isolated network mode or a grid connection mode; and a voltage level and an access location of the access distribution network are then determined based on the micro-grid capacity. As for the scheme for designing micro-grid network structure, a mode of power supply is selected as dual power supply or single power supply based on load levels of different users. As for the scheme for designing distributed powers in the micro-grid, types of the distributed powers are selected, forms of renewable energy generation such as wind power, photovoltaic power and the like are preferred choices, cooperative corresponding storage equipment are used; and capacities of the distributed powers are chosen. The invention provides the basis for the construction of the micro-grid system. The micro-grid system is designed based on the actual needs of users, the method is highly practical and costs for the construction of the micro-grid system are reduced.

Description

technical field [0001] The invention relates to a power system design method, in particular to a micro grid system design method. This method is aimed at the construction of microgrid. Background technique [0002] With the depletion of traditional fossil energy and the requirements of low-carbon and environmental protection, the distributed power generation of clean energy has become a current research hotspot, but the direct connection of distributed power to the grid may cause many problems such as the power quality of the power system, the safety and stability of the power grid, etc. question. In order to further improve the flexibility, controllability and economy of power system operation, and to better meet the higher requirements of power users for power quality and power supply reliability, the concept of microgrid came into being. [0003] The micro-grid system is a highly independent decentralized power network, which is composed of energy storage devices such a...

AI Technical Summary

Problems solved by technology

[0005] 1) The existing microgrid is for scientific research, there are many experimental equipment, and the actual application requirements are not considered;

[0006] 2) The existing microgrid lacks technical and economical analysis;

[0007] 3) It has no engineering promotion value;

[0008] 4) The determination of the capacity of various distributed power sources in the microgrid is often selected based on experience, the cost of the entire system is high, and some equipment cannot be fully utilized;

[0009] 5) There is no complete microgrid grid and distributed power supply design scheme