A Method for Interconnection Grid Planning

Abstract

An interconnected grid planning method. Firstly, according to the large-scale wind power grid-connected system, the flexibility of the power system should be improved as much as possible, so that wind power can be connected to the grid to the greatest extent, and the basic idea of ​​building the economic cost of the interconnected grid should be considered to establish a two-tier planning of the interconnected grid. The mathematical model; the model is divided into an upper-level planning model and a lower-level planning model. The upper-level determines the topology of the power grid to make overall decisions. Under the constraints of the upper-level planning model, the lower-level planning model considers economic costs and verifies the upper-level planning model. In the upper-level planning model, the wind TV is regarded as a negative load, and the characteristic index between the generalized power load and the load is compared to determine the topology structure of the power grid and the division of the balance area. The lower-level planning model is based on the decision information of the upper-level planning model. The investment cost, operating cost, and power shortage cost of the power grid" are the objective functions; finally, the mathematical model is solved by using the particle swarm optimization algorithm.

Description

technical field [0001] The invention relates to a planning method for an interconnected power grid. Background technique [0002] In recent years, the growth of global power demand has accelerated, the power structure is unreasonable, and the problem of power energy shortage is very serious. The growing energy crisis has had a serious impact on people's lives and severely restricted economic growth. The power demand for peak power consumption is huge, and the power demand gap is very severe. Due to the huge power demand gap in the short term, this provides opportunities for the surrounding areas with relatively rich power resources to export power. With the construction of economic corridors, Central Asia has become a hot spot for global investment. However, the west of my country is located in the "core area of ​​the Silk Road Economic Belt" and has the advantage of resource endowment. However, with the rapid development of wind power, the wind abandonment rate remains h...

AI Technical Summary

Problems solved by technology

The present invention scientifically and reasonably proposes how to build a power grid and the economic cost of building a power grid, and considers wind power as a negative load, and compares the characteristic index between the generalized power load and the load in the upper model to determine the topological structure and balance area of ​​the power grid The division of the lower-level model checks the upper-level model based on economic efficiency, so as to reasonably solve the problem of wind power grid connection and realize the interconnection of the power grid

Images