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Method for dynamically setting parameters of coordinated control system on basis of preliminary coal supply control model

A technology for coordinating control systems and control models, applied in control/regulation systems, general control systems, adaptive control, etc., can solve problems such as control effects depending on the technical level of thermal engineers, complicated parameter tuning process, and difficulty in establishing mathematical models. , to achieve the effect of shortening the calculation time, high precision and large time span

Active Publication Date: 2014-12-31
LIAONING ELECTRIC POWER COMPANY LIMITED POWER SCI RES INSTION +2
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Problems solved by technology

In specific engineering practice, existing control schemes are difficult to establish mathematical models, the parameter setting process is complicated, and the control effect is heavily dependent on the technical level of thermal engineers.

Method used

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  • Method for dynamically setting parameters of coordinated control system on basis of preliminary coal supply control model
  • Method for dynamically setting parameters of coordinated control system on basis of preliminary coal supply control model
  • Method for dynamically setting parameters of coordinated control system on basis of preliminary coal supply control model

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Embodiment Construction

[0031] The present invention is a method for dynamically setting parameters of a coordinated control system based on a pre-feeding coal control model, comprising the following steps:

[0032] The first step: add the pre-feeding coal control loop interface to the logic configuration boiler main control loop of the original coordinated control system;

[0033] The second step: Carry out the logic configuration of the pre-feeding coal control loop, and introduce its output into the interface of the pre-feeding coal control loop as the feed-forward signal for boiler control;

[0034] The third step: add the main steam pressure internal model controller, and introduce its output into the main control circuit of the boiler as the input signal of the pressure circuit;

[0035] Step 4: Export historical data from the DCS historical station of the unit, and use computer software to assist in setting the parameters of the pre-feeding coal control model;

[0036] Step 5: Put the control...

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Abstract

The invention belongs to the field of boiler-turbine coordinated control for thermal generator sets, and particularly relates to a method for dynamically setting parameters of a coordinated control system on the basis of a preliminary coal supply control model. The method is applied to optimizing the dynamic parameters of the coordinated control system when a thermal power generating unit runs in an AGC (automatic gain control) mode, performance indexes of main controlled variables of the unit are improved, and load of the unit meets requirements of a power grid on technical indexes. Computer software assists in solving parameters of a control algorithm, a debugging process is simplified, and dynamic parameter solving time is shortened. In addition, characteristics of comprehensiveness of historical data, high precision, long time span and the like of a current DCS (data communication system) are sufficiently played, the historical running data of the unit are analyzed by the software, and the method is combined with field load change tests for the unit, and realizes an effect of yielding twice the result with half the effort by using the computer software to assist in solving the parameters of the control algorithm.

Description

technical field [0001] The invention belongs to the field of coordinated control of a thermal power generating set, and in particular relates to a method for dynamically setting parameters of a coordinated control system based on a pre-feeding coal control model. It is applied to optimize the dynamic parameters of the coordinated control system when the AGC mode of thermal power units is running, improve the performance indicators of the main controlled quantities of the units, and make the unit load meet the technical index requirements of the power grid. Background technique [0002] The thermal power unit coordination control system is the highest level controller in the unit control, responsible for coordinating the energy balance control between the steam turbine and the boiler, ensuring the safe and stable power supply of the unit to the power grid, and maintaining the safe and stable operation of the power grid. The controlled object of coordinated control is a multi-...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B13/00G06F17/50
CPCY02E60/76Y04S40/22Y02E60/00
Inventor 郝欣王英荟宋圣军张天放
Owner LIAONING ELECTRIC POWER COMPANY LIMITED POWER SCI RES INSTION
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