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Method for recognizing parameters of steam turbine and speed regulating system thereof through combined thickness and thinness adjustment

A speed control system and parameter identification technology, which is applied in electrical digital data processing, special data processing applications, instruments, etc., and can solve the problems of high manual participation, poor adaptability, and long cycle.

Active Publication Date: 2015-12-02
GUIZHOU POWER GRID CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the problems of traditional steam turbine and speed control system parameter identification methods such as long period, poor adaptability and excessive manual participation

Method used

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  • Method for recognizing parameters of steam turbine and speed regulating system thereof through combined thickness and thinness adjustment
  • Method for recognizing parameters of steam turbine and speed regulating system thereof through combined thickness and thinness adjustment
  • Method for recognizing parameters of steam turbine and speed regulating system thereof through combined thickness and thinness adjustment

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Embodiment Construction

[0059] In the actual test, the step signal test of the steam turbine is often performed in the single valve mode. The step signal is sent by the valve position command, and the valve stroke opening is adjusted by the actuator to control the amount of steam entering the steam turbine to complete the adjustment of the speed and power of the steam turbine.

[0060] First, sort out the test data involved in the identification process: valve position stroke opening change data, high-pressure cylinder regulating stage pressure change data, reheat pipeline pressure change data, middle exhaust pressure change data, and power change data. In the actual process, the specific identification steps are as follows:

[0061] 1) T 1 , T 3 Assign initial value. Take the valve position stroke opening change data as input, the high pressure cylinder regulating stage pressure change data as output, locate T 1 value; take the reheat pipe pressure change data as input, the middle row pressure ch...

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Abstract

The purpose of the invention is to solve the problems of long period, poor adaptability and high artificial participation degree of a traditional method for parameters of a steam turbine and a speed regulating system thereof. The method comprises: based on a steam turbine and speed regulating system model provided by PSD-BPA, analyzing the sensitivity of parameters in the system to obtain the sensitivity of a parameter to be recognized, adopting a combined thickness and thinness adjustment mode according to the sensitivity of the parameters, primarily locating the recognition range of important parameters based on a particle swarm optimization (PSO), and precisely adjusting the recognition range of the important parameters to finish a recognition process finally. The recognition strategy has the advantages of high recognition speed, high precision, strong adaptability, less human intervention and strong automation ability.

Description

[0001] 1. The name of the invention: [0002] A method for parameter identification of steam turbine and its speed control system realized by combining thickness and fineness adjustment 2. Technical field [0003] The invention relates to a method for identifying key parameters of a steam turbine and a speed control system in a power system, in particular to a method for identifying important parameters based on an intelligent optimization algorithm using a brand-new identification strategy, belonging to the field of automatic control technology application and optimization control. 3. Background technology [0004] ① As one of the most important equipment of thermal power generating units, the steam turbine is responsible for the energy conversion in the process of power production, and its dynamic performance is directly related to the economical and safe operation of the unit. The change of the steam pressure in the steam turbine directly affects the dynamic change of the...

Claims

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Application Information

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IPC IPC(8): G06F17/50
Inventor 钟晶亮邓彤天王家胜张颖
Owner GUIZHOU POWER GRID CO LTD
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