Research on the Coordination Planning Method of Power Generation and Transmission Based on Economic Efficiency Assessment of Power Grid

Abstract

[Introduction] In order to promote the coordination of generation and transmission in the electricity market, this paper proposes a coordinated generation and transmission planning method based on economic efficiency evaluation of power grid. [Method] With the gradual advancement of the power market reform, the competition of generation side was more diversified and the selling side was gradually liberalized. Traditional planning methods of power grid might no longer be applicable in the power market. In this paper, the main causes of the inconsistency between power supply and power grid development under the new environment of power market were analyzed from the aspects of uncertainty of power supply development and power flow. [Result] The cost-benefit method to Evaluate Economic Efficiency is applied. By calculating the net benefit of the system with or without the project, the benefit-cost ratio BCR of each project is finally obtained, which is used to optimize the power distribution and serve as an important basis for the decision-making of power grid projects. [Conclusion] It is suggested that the coordination between generation and transmission in power market can be promoted by optimizing and improving the method of power grid planning and establishing an evaluation system of power grid economic efficiency.

Keywords

• generation and transmission coordination
• power market
• economic efficiency of power grid
• congestion analysis
• power distribution