Nonlinear simulation device of overheater of power generating set

A technology of thermal power unit and simulation device, which is applied in the control of superheated temperature, steam superheating, program control in sequence/logic controller, etc. It can solve the problems that the dynamic characteristics of the superheater cannot be simulated, and achieve good simulation test and good continuity running effect

Active Publication Date: 2009-09-30
CHINA ELECTRIC POWER RES INST +1
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Problems solved by technology

The establishment of the simulation model of the superheater is particularly important, so that on this basis, a good control strategy can be researched and developed. The current method for modeling the superheater is mainly to describe the superheater object with a transfer function for different load segments Come out: These methods have the following defects: Since different load segments are described separately, the dynamic characteristics of the superheater cannot be well simulated when the load changes in a large range

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  • Nonlinear simulation device of overheater of power generating set
  • Nonlinear simulation device of overheater of power generating set

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Embodiment Construction

[0010] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments. (Please give a specific example to describe the following simulation device. It is necessary to describe the formulas of each function, the formulas of various relationships, and the formulas of the inertial link in detail.)

[0011] figure 1 It is a configuration diagram of the thermal power unit superheater simulation device according to the present invention. The actual load and rated value of the thermal power unit superheater to be simulated are used as the two inputs of the divider a, and the output of the divider a is used as six function generators 1-6 input, and the divider a also outputs the load rate, wherein the function generator 5 is the corresponding relationship function between the load rate and the opening of the desuperheating water valve, which is the stable working condition of the unit under the actual load of the superheater of th...

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Abstract

The invention provides a nonlinear simulation device of an overheater of a thermal generator set, which realizes unification of conditions when the prior four linear models simulate different loads, so that the use of the nonlinear simulation device is more convenient and quick, the switching of simulation models is greatly simplified, and a specific load is obtained from a given load through a divider, and then a related parameters of an operating point can be obtained from the specific load through a corresponding function for operation. In addition, the nonlinear simulation device can continuously simulate the overheater of a thermal power plant.

Description

technical field [0001] The invention belongs to the field of thermal automatic control, in particular to a nonlinear simulation device for a thermal power unit superheater. Background technique [0002] With the continuous development of my country's electric power industry, the power generation capacity of the unit thermal power generation unit has also been greatly improved, and higher requirements are put forward for the control level of the unit. The temperature of the main steam is an important factor for the safe operation of the unit. Parameters, high or low main steam temperature have seriously affected the safety temperature and economic benefits of the unit. However, the control of the main steam temperature in the operation of the unit is a link with great inertia, and there are many other interference factors, such as flue gas flow rate, unit efficiency, etc., so the control of the main steam temperature in thermal power plants has always been a Very difficult to...

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Application Information

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IPC IPC(8): G05B19/04F22G1/00F22G5/00
Inventor 韩忠旭周传心闫翠会
Owner CHINA ELECTRIC POWER RES INST
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