Real-time energy efficiency optimization method for combustion gas turbine

Abstract

The invention relates to a real-time energy efficiency optimization method for a combustion gas turbine. The method comprises the following steps of S1, according to detailed information and historical index parameters of the combustion gas turbine, establishing a high-precision combustion gas turbine simulation model; S2, by taking real-time index parameters of the combustion gas turbine as inputs of the combustion gas turbine simulation model, initializing a working condition, performing simulation operation based on the working condition, and recording an output result of the combustion gas turbine simulation model; S3, based on the output result of the combustion gas turbine simulation model, performing energy loss analysis, introducing a sensitivity analysis method to search for a method capable of effectively reducing the energy loss so as to determine optimal index parameters; and S4, performing verification by taking the optimal index parameters as the inputs of the combustion gas turbine simulation model.

Description

technical field [0001] The invention relates to the field of gas turbines, and more specifically, to a method for optimizing real-time energy efficiency of a gas turbine. Background technique [0002] The gas turbine intake system is equipped with heating and cooling devices. It is necessary to study the operating rules of the unit under partial load and in different environments in advance, and because the operating characteristics of the gas turbine are very different from the traditional coal-fired units. At present, my country's gas-fired units The comprehensive analysis and evaluation of performance is not yet perfect. The operation and control rules of gas-fired units are complicated, and there are problems such as large fluctuations in unit output due to environmental influences, closed technology of gas turbines, and low transparency; at the same time, with changes in external demand load, ambient temperature and other factors, gas turbine output, efficiency or heat c...

AI Technical Summary

Problems solved by technology

The operation and control rules of gas-fired units are complicated, and there are problems such as large fluctuations in unit output due to environmental influences, closed technology of gas turbines, and low transparency; at the same time, with changes in external demand load, ambient temperature and other factors, gas turbine output, efficiency or heat consumption rate, etc. The performance index also changes accordingly, and the unit is often in a state of variable operating conditions; in addition to the composition and calorific value of the natural gas used as fuel, the difference in the operating environment of the unit, the design scheme of the unit, and the level of operation and maintenance also affect the actual output and efficiency of the unit. Have a great impact

The traditional thermal power SIS consumption difference analysis method is not applicable to gas-fired power plants, and the application of the small-indicator assessment system to gas-fired units also has various deficiencies. At present, domestic high-precision models and real-time energy consumption index analysis researches for gas turbine systems are not yet available. Perfect, in the absence of real-time on-line monitoring and performance analysis, there may be a large gap between the actual operating conditions of the unit and the design operating conditions, and often operate under conditions that deviate from the rated or optimal conditions

In addition, due to different design schemes, production operation and management level gaps, the actual power generation performance of the units also has certain differences.

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