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Efficiency dynamic optimizing operation closed-loop optimization control method based on optimum operating conditions of thermal generator set

A technology for thermal power generating units and optimal working conditions, which is applied in the direction of electrical program control, comprehensive factory control, etc., and can solve the problem of not realizing closed-loop optimization control of efficiency automatic control system.

Active Publication Date: 2012-08-01
内蒙古自治区电力科学研究院
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the existing generator set operation optimization system still only stays at the stage of providing optimization guidance and suggestions to operators through analysis and calculation, and has not realized the closed-loop optimization control of the automatic control system for efficiency optimization.

Method used

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  • Efficiency dynamic optimizing operation closed-loop optimization control method based on optimum operating conditions of thermal generator set
  • Efficiency dynamic optimizing operation closed-loop optimization control method based on optimum operating conditions of thermal generator set
  • Efficiency dynamic optimizing operation closed-loop optimization control method based on optimum operating conditions of thermal generator set

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Embodiment 1

[0015] Such as figure 1 As shown, the present invention is based on the efficiency dynamic optimization operation flow chart of the closed-loop optimization control method of the optimal working condition of the thermal power generating set. The operating parameters of the thermal power generating set are read from the DCS to the intelligent plug-in system through the network, and in the smart plug-in system through Optimize the control algorithm to obtain the operating parameter guidance values ​​to optimize the unit efficiency and achieve the best operating conditions, and then return some valuable optimization parameter operation guidance values ​​to the DCS system through the network, and introduce these optimization parameters into the unit automatic In the control system DCS, as the given value (command) of each automatic control system, the unit operating parameters are consistent with the optimized parameters through the adjustment function of the automatic control syst...

Embodiment 2

[0028] Embodiment 2, optimize operation process

[0029] 2.1 Prediction of unit operating parameters

[0030] Some key parameters of thermal power units, such as steam turbine exhaust enthalpy, carbon content in fly ash, etc., are difficult to measure accurately, and these parameters are necessary for the calculation and optimization of unit operation economic performance. In recent years, soft sensor on-line monitoring technology has been greatly developed. This technology uses some variables that are easy to measure in real time and are closely related to the measured variable. The core is the soft sensor model. At present, soft sensor modeling methods can generally be divided into: mechanism modeling, regression analysis, state estimation, pattern recognition, artificial neural network, fuzzy mathematics, methods based on support vector machines and kernel functions, and modern nonlinear system information processing technology, etc. . Among them, support vector machine ...

Embodiment 3

[0112] 1 Self-optimization mode to determine the target value

[0113] 1.1 Fuzzy comprehensive evaluation decision

[0114] The fuzzy comprehensive evaluation decision is to apply the fuzzy set method to make a single decision on the factors involved in the object, and then synthesize all aspects of the situation to give an overall decision for the object.

[0115] The mathematical model of fuzzy comprehensive evaluation decision-making is composed of three elements, and its steps are divided into four steps:

[0116] (1) Factor set U={u 1 , u 2 ,...u n}, a set composed of various factors of the evaluated object;

[0117] (2) Judgment set (evaluation set or decision set) V={v 1 , v 2 ,…v m}, a set of comments;

[0118] (3) Single factor judgment, that is, for a single factor u i (i=1,...,n) evaluation, get the fuzzy set on V (r i1 , r i2 ,...r im ), so it is a fuzzy mapping from U to V

[0119] f : ...

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Abstract

The invention discloses an efficiency dynamic optimizing operation closed-loop optimization control method based on optimum operating conditions of a thermal generator set, which includes the following steps: A1 reading set operation data from a generator set data communication system (DCS) to an intelligent plug-in system; A2 in the intelligent plug-in system, achieving integrated modeling and set efficiency optimizing operation according to the set operation data obtained by reading, and obtaining a set operation data guidance value of efficiency optimizing; A3 backward reading the set operation data guidance value to the DCS through a network, and achieving data filtering of an operation reference value in the DCS; A4 switching data commands in an automatic control system to the processed operation reference value, and achieving undisturbed switching of the system through logic programming; and A5 achieving efficiency automatic optimizing process of the system. Parameter automatic optimizing of the set can be achieved by means of automatic correction of the automatic control system commands and regulation of the automatic control system, and accordingly operating conditions of the set and efficiency of a generator set boiler and a steam turbine can be improved.

Description

technical field [0001] The invention relates to the technical field of thermal power generation, in particular to a closed-loop optimization control method for efficiency dynamic optimization operation based on the optimal working condition of a thermal power generating set. Background technique [0002] In the form of increasingly scarce fossil energy and increasingly serious environmental pollution, while accelerating the development of renewable energy, human beings are paying more attention to energy saving and consumption reduction in traditional industries. Thermal power plants are not only power generation enterprises but also energy-consuming enterprises. How to improve the operating economy of thermal power plants and reduce energy loss and pollutant emissions has become a hot topic of research at home and abroad. The thermal power plant operation optimization system is increasingly showing its importance as a function of guiding the optimal operation of the power p...

Claims

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Application Information

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IPC IPC(8): G05B19/418
Inventor 辛晓钢王彪李斌陈世慧周鹏杨建蒙陈起李卫华霍红岩李建强
Owner 内蒙古自治区电力科学研究院
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