Energy efficiency comprehensive evaluation method for thermal power plant

Abstract

The invention relates to an energy efficiency comprehensive evaluation method for a thermal power plant. The method comprises the following steps: building an energy efficiency comprehensive evaluation index system of the thermal power plant; determining comprehensive weight of the energy efficiency comprehensive evaluation indexes of the thermal power plant by using an order relation method and a sequence comprehensive method; analyzing by using a grey relational degree and building positive and negative ideal grey correlation decision matrixes; calculating weighting grey correlation decision matrixes through the combination of comprehensive index weight of the energy efficiency indexes; finally, calculating projection coefficient values of a unit to be evaluated according to a protection vector principle. By using a combination weighting method, the defect of single weighting is overcome; by combining TOPSIS, the grey relation theory and a projection vector theory, the weakness of grey correlation one-way evaluation is effectively avoided; meanwhile, a vector space of an index factor set is fully utilized, so that the method is particularly suitable for solving the energy efficiency evaluation problems of large-scale thermal power plants with more index factors and provides a new way for energy efficiency evaluation of the power plants.

Description

technical field [0001] The invention relates to a comprehensive method for thermal power unit energy efficiency evaluation, and relates to the fields of thermal power plant comprehensive evaluation and energy-saving management research. Background technique [0002] Thermal power plants, as primary energy consumers and large pollutant emitters, have put forward higher requirements for power plants' energy conservation and emission reduction work as the country attaches great importance to energy conservation, emission reduction and environmental protection. How to provide power guarantee for the development of the national economy On the basis of energy conservation, achieving high efficiency and low emissions is the starting point for power plant energy conservation work and research. [0003] At present, the research on energy saving and consumption reduction in thermal power plants is mainly to analyze the energy loss and optimize the operation of a single unit, and there...

AI Technical Summary

Problems solved by technology

Analytic Hierarchy Process is a decision-making method that divides various factors in complex problems into multi-level and multi-objective decision-making methods. It is characterized by relying on the experience of experts; A comprehensive evaluation of various relevant factors also has the characteristics of relying on human subjectivity and not strong objectivity; the matter-element analysis method is suitable for the internal comprehensive evaluation analysis of a single unit, but not suitable for the comprehensive evaluation of large-scale thermal power units Problem: Gray relational analysis is widely used in the field of comprehensive decision-making, but the characteristics of one-way evaluation are not easy to widen the distance between evaluation schemes, and the degree of discrimination is not high. the key of

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