Operation back pressure continuous optimized control method and system for air-cooled generator unit steam turbine

A generator set, optimization control technology, applied in the direction of engine components, machines/engines, mechanical equipment, etc., can solve the problems of the background technology that has no useful system, vacuum optimization control problem, etc., and achieve accurate solution to the objective function , Reasonably deal with the problem of blocking back pressure, and accurately predict the effect of changes in energy consumption

Active Publication Date: 2016-05-11
北京互嘉联盟科技中心(有限合伙)
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Problems solved by technology

[0015] Because the cold source optimization problem involves the theoretical and practical problems of various models such as the steam turbine cycle model, the cold source model, and the condenser model, especially due to the complexity caused by the above-mentioned various time-varying factors, the vacuum optimal control problem becomes very difficult
Background technology No useful systematic results have been obtained

Method used

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  • Operation back pressure continuous optimized control method and system for air-cooled generator unit steam turbine
  • Operation back pressure continuous optimized control method and system for air-cooled generator unit steam turbine

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Embodiment Construction

[0091] The principles and features of the present invention are described below in conjunction with the accompanying drawings, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.

[0092] Such as figure 1 As shown, it is the air-cooled generating set steam turbine running back pressure continuous optimization control method described in Embodiment 1 of the present invention, which specifically includes the following steps:

[0093] Fan model establishment step: establish a fan model for determining the relationship between the fan operation mode, the flow rate of the cooling medium, and the power consumption of the fan;

[0094] Condenser heat transfer model establishment steps: establish a condenser heat transfer model for determining the relationship between cooling medium flow, cooling medium temperature rise, cooling medium outlet temperature, and condenser saturation temperature;

[0095...

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Abstract

The invention relates to an operation back pressure continuous optimized control method and system for an air-cooled generator unit steam turbine, belongs to the field of optimized control of condensing type steam turbine circulation in the large thermal power generation process of fire coal, gas, nuclear energy and the like, and particularly relates to the field of direct air-cooled condenser back pressure or vacuum optimized control. Universal methods of operation back pressure continuous optimized control of a large direct air-cooled generator unit steam turbine are realized and include a cold source optimized mathematical model of complete constant characteristic parameters including blocking back pressure, a method taking necessary time-varying factor influences into consideration and a method for measuring the constant characteristic parameters, computer software is developed by means of the methods, the computer software is used for online calculation to obtain the optimal solution or cycling comparison calculation through the enumeration method so that a vacuum optimized control scheme can be obtained. The obtained vacuum optimized control scheme serves as a basis of strict and systematic vacuum optimized operation, and vacuum automatic and optimized control is achieved.

Description

technical field [0001] The invention relates to a continuous optimization control method and system for the running back pressure of an air-cooled generating set steam turbine, which belongs to the field of optimal control of the condensing steam turbine cycle in large-scale thermal power generation processes such as coal, gas and nuclear energy, especially the back pressure of direct air-cooled condensers. Optimally controlled areas of pressure or vacuum. Background technique [0002] The cooling system of the steam turbine cycle condenser of a large direct air-cooled generating set is an air-cooled island, or a cold source system. The cooling medium is delivered by multiple single-stage axial flow fans driven by multiple motors and equipped with frequency converters for speed regulation. , that is, air. Air cooling fans consume a lot of electricity. During the operation of the generator set, the air cooling island can continuously adjust the flow of cooling medium by adj...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F28B11/00F01D21/00
CPCY02E60/00
Inventor 王砧
Owner 北京互嘉联盟科技中心(有限合伙)
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