LCC theory-based method of comprehensive evaluation of transmission network planning scheme

Abstract

The invention relates to an LCC theory-based method of comprehensive evaluation of a transmission network planning scheme. The method is characterized in that the method comprises the following steps that: step 1.1, according to power grid data published by an electric power company, calculation is respectively carried out on risk indexes Rs, efficiency indexes Es and LCC indexes Cs of N transmission network planning schemes by employing different computing methods; step 1.2, the risk indexes Rs, the efficiency indexes Es and the LCC indexes Cs of the N transmission network planning schemes are respectively substituted into a formula (1) to obtain N composite indicators RECs, wherein the formula is: REC= R + E + C (1) and the risk indexes Rs, the efficiency indexes Es and the LCC indexes Cs are obtained by the step 1.2; and step 1.3, comparison is carried out on the N composite indicators RECs that are obtained by the step 1.2; and a scheme that is corresponded to a composite indicator REC with a minimum numerical value is an optimum scheme and a scheme that is corresponded to a composite indicator REC with an infinite numerical value is an ineffective scheme. According to the invention, economy and technique rationality of a transmission network planning scheme as well as an influence on the environment can be evaluated comprehensively; and coordination optimization of the transmission network planning in the aspects of economy, technology and environmental protection can be realized.

Description

technical field [0001] The invention relates to a method for comprehensive evaluation of transmission network planning schemes based on LCC theory, and belongs to the technical field of power system planning. Background technique [0002] Transmission network planning is an important part of power system planning and the basis for transmission network construction and development. It has a long-term impact on power grid development, economic growth and the surrounding environment. Therefore, it is necessary to comprehensively evaluate the performance of the transmission network planning scheme and make a Correct development decision-making has become an important issue to be solved in practice. [0003] The comprehensive evaluation of the transmission network planning scheme involves many fields such as technology, economy, environment, etc., and includes various uncertain factors in the future for a long time. The complexity and difficulty of comprehensive evaluation and op...

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Problems solved by technology

[0004] In order to overcome the one-sidedness of the traditional transmission network planning evaluation scheme, solve the problem that it cannot comprehensively reflect the characteristics of various attributes of the power grid planning scheme, and improve the accuracy of scheme evaluation and comparison, the purpose of this invention is to propose a method based on LCC Theoretical Comprehensive Evaluation Method of Transmission Network Planning Scheme

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