Energy efficiency analysis method of generator set

Abstract

The invention provides an energy efficiency analysis method of a generator set. The method comprises: acquiring generator set parameters, set performance target value and actual values; calculating external condition deviations according to boiler actual coal consumption, current environment temperature, turboset circulating water temperature, turboset heat-supply power generation ratio and turboset power generation capacity of the generator set parameters; respectively calculating a boiler efficiency deviation, a turboset efficiency deviation and a station service power consumption rate deviation through a boiler performance test, a turboset performance test and station service power consumption rate testing performance test under multiple working conditions, and calculating a device performance deviation according to the boiler efficiency deviation, the turboset efficiency deviation and the station service power consumption rate deviation; calculating expected values of set actual operation according to generator set design parameters, the external condition deviations and the device performance deviation; and respectively calculating difference values between the expected values and the target values and difference values between the expected values and the actual values, and calculating generator set energy efficiency according to preset weights and corresponding membership functions of the two types of difference values.

Description

technical field [0001] The invention relates to an energy efficiency analysis technology for a coal-fired generating set, in particular to an energy efficiency analysis method for a generating set. Background technique [0002] As society's demand for electricity is getting higher and higher, how to improve the energy efficiency of generator sets has become a concern of people. [0003] From the perspective of energy conversion, the energy conversion efficiency η of the generator set E It is the product of various processes such as boiler and steam turbine, expressed in the following formula: [0004] n E = η B ·η P ·η T ·(1-W S / W G ) [0005] Among them, η B is the thermal efficiency of the boiler, η P is the pipeline efficiency, η T is the turbine efficiency, W S is the self-consumption power, W G for power generation. [0006] It is usually customary to use power supply coal consumption b to represent the energy conversion efficiency η of a coal-fired power...

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Problems solved by technology

[0011] In the above method, due to energy conversion efficiency η E Or the amount of information on the power supply coal consumption b itself is too small to analyze the cause of the energy efficiency deviation problem, and it is impossible to solve the fairness problem of energy efficiency evaluation under different production conditions

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