scholarly journals Extending the applied software in the contemporary thermal power plants for increasing the intelligence of the automatic control system

2017 ◽  
Vol 891 ◽  
pp. 012277 ◽  
Author(s):  
G Krokhin ◽  
A Pestunov ◽  
E Arakelyan ◽  
V Mukhin
Keyword(s):  
Control System ◽  
Automatic Control ◽  
Automatic Control System ◽  
Power Plants ◽  
Thermal Power ◽  
Thermal Power Plants ◽  
Applied Software

Application of Siemens S7-300 PLC in the Thermal Power Plant Flue Gas Desulfurization Control System

2014 ◽  
Vol 511-512 ◽  
pp. 1123-1127
Author(s):  
Mei Long Ju ◽  
Xiu Qin Zhai ◽  
Qing Zhang
Keyword(s):  
Control System ◽  
Automatic Control ◽  
Automatic Control System ◽  
Flue Gas ◽  
Thermal Power ◽  
Flue Gas Desulfurization ◽  
Industrial Control ◽  
Economic Operation ◽  
Control Computer ◽  
Industrial Control Computer

According to the characteristics of Wet Flue Gas Desulphurization (FGD), this paper brings forward the automatic control requirements and the control methods. The automatic control system is composed of a Programmable Logic Controller (PLC) and an industrial control computer (PC). The automatic control system can monitor the operating parameters of FGD system automatically and conduct automatic control and adjustment to FGD system. The PLC is responsible for the data collection and automatic control, while the PC is responsible for the surveillance of FGD system operation and the data processing through mutual communications between PC and PLC, which realizes the communication between human and machine and ensures the safe, stable and economic operation of the FGD system.

scholarly journals Structural-and-Parametric Optimization of Automatic Control System for Power Units of 300 MW in Wide Range of Load Variations

2019 ◽  
Vol 62 (5) ◽  
pp. 469-481 ◽  
Author(s):  
K. I. Artsiomenka
Keyword(s):  
Control System ◽  
Power Plant ◽  
Automatic Control ◽  
Automatic Control System ◽  
Power Plants ◽  
Parametric Optimization ◽  
Load Curve ◽  
Basic Part ◽  
Daily Schedule ◽  
Electric Loads

The structural-parametric optimization of the automatic control system for power units (ACSPU) of 300 MW of Lukoml’skaya GRES (Lukoml Local Condensing Power Plant) in the mode of both the permanent and the variable superheated steam pressure upstream of the turbine is under consideration. During 1974–1979, eight units of the Lukoml’skaya GRES implemented the ACSPU with a leading boiler power control. At the moment, these systems no longer meet all the frequency control quality requirements. In 2016, the daily schedule of electric loads of the Belarusian power system was as follows: the basic part of the schedule of electric loads was covered by combined heat and power plants (CHP) and by mini-CHP (which are the least maneuverable of the power plants), the semi-peak part of it–by local condensing power plants (Lukoml’skaya GRES and Berezovskaya GRES), the peak part–by import electric energy from neighboring power systems. However, this year the first unit of the Belorussian NPP will be put into operation, while the second one–in 2020. After the launch of the Belorussian NPP, it will cover basic part of load curve; CPPs will cover the semi-peak part, while the peak part of load curve will be covered by local condensing power plants. Correspondingly, due to the alteration of the structure of daily schedule of electric loads of the Belarusian power system, it is necessary to improve the efficiency of power units of Lukoml’skaya GRES as well as of the entire Lukoml’skaya GRES in general. This can be achieved with the help of the method of parametric optimization of the typical ACSPU proposed in the present paper. As a result, the quality of control of power and pressure upstream of the turbine will be improved; the flow of fuel will be reduced, as well as the turbine regulation valve displacement; environmental performance of entire power plant will be improved, too. The proposed technique has been confirmed by the results of computer simulation of transient processes in the automatic control system under external and internal disturbances.

Research and Design of the PLC-Based Control System for Thermal Power Plant Flue Gas Desulfurization

2013 ◽  
Vol 805-806 ◽  
pp. 991-995
Author(s):  
Huo Jun Liu
Keyword(s):  
Control System ◽  
Automatic Control ◽  
Automatic Control System ◽  
Flue Gas ◽  
Thermal Power ◽  
Flue Gas Desulfurization ◽  
Industrial Control ◽  
Control Computer ◽  
Industrial Control Computer ◽  
Research And Design

According to the characteristics of Wet Flue Gas Desulphurization (FGD), this paper brings forward the automatic control requirements and the control methods. The automatic control system is composed of a Programmable Logic Controller (PLC) and an industrial control computer (PC). The automatic control system can monitor the operating parameters of FGD system automatically and conduct automatic control and adjustment to FGD system. The PLC is responsible for the data collection and automatic control, while the PC is responsible for the surveillance of FGD system operation and the data processing through mutual communications between PC and PLC, which realizes the communication between human and machine and ensures the safe, stable and economic operation of the FGD system.

Automatic Regulating System Model of Thermal Power Plant Based on Single Loop Feedback Control

2014 ◽  
Vol 543-547 ◽  
pp. 580-584
Author(s):  
Gui Qiu Su ◽  
Chao Zhang
Keyword(s):  
Control System ◽  
Power Plant ◽  
Automatic Control ◽  
Production Process ◽  
Automatic Control System ◽  
Thermal Power Plant ◽  
Thermal Power ◽  
System Model ◽  
Single Loop ◽  
Loop Feedback

The production process of the thermal power plant is transferring primary energy to secondary energy. Loss of energy is quite large for coal machine. When using air supply machine and other boiler auxiliary equipments, saving energy, reducing energy consumption is an important way to reduce the cost. This paper first analyzes the basic principle of energy transformations generation field and principle characteristics of thermal automatic control system during the production process. On the basis of energy saving and low cost framework, according to the single loop feedback construction, we establish automatic control system model of thermal power plant. Through comprehensive cloud generator we do simulation on thermal power enterprises, the result is significant. It shows that this model can provide scientific theoretical basis for the operation mode of power generation enterprises in a certain degree.

scholarly journals SYSTEM OF AUTOMATIC CONTROL OF THE LEVEL OF STEAM POWER GENERATORS ON THE BASIS OF THE REGULATION CIRCUIT WITH SMOOTHING OF THE SIGNAL

2021 ◽  
Vol 22 (1) ◽  
pp. 287-297
Author(s):  
Dilnoza Umurzakova
Keyword(s):  
Automatic Control ◽  
Water Level ◽  
Power Plants ◽  
Thermal Power ◽  
Thermal Power Plants ◽  
Steam Generators ◽  
Wide Range ◽  
Steam Boilers ◽  
The Impact

The purpose of this article is to develop high-quality combined automatic control systems (ACS) for the water level in the drum of steam boilers of thermal power plants (TPPs), which can significantly improve the quality of regulation and increase the efficiency of TPPs in a wide range of load changes. To improve the quality of water level control in the drum of steam generators of nuclear power plants with a pressurized water-cooled power reactor (PWPR), it is proposed to use a combined automatic control system based on a control loop with a correcting PI-controller tuned to a symmetrical optimum, with smoothing the reference signal and device compensation of the most dangerous internal and external measurable disturbances. A technique has been developed for assessing the impact of changes in the quality characteristics of transients of combined self-propelled guns by the water level in the drum of steam boilers and steam generators on the safety, reliability, durability, and efficiency of thermal power equipment of thermal power plants. Comparison was made of direct indicators of the quality of three ACS (typical and three-pulse, digital system with an observer state, and the proposed combined ACS). The simulation results of transients of the proposed and typical three-pulse self-propelled guns confirmed the advantages of the first. ABSTRAK: Artikel ini bertujuan bagi membina sistem kombinasi automatik (ACS) berkualiti tinggi bagi aras air dalam drum dandang stim tenaga terma logi kuasa (TPP). Ini dapat meningkatkan mutu peraturan dan meningkatkan kecekapan TPP secara signifikan dengan pelbagai perubahan beban. Bagi meningkatkan kualiti kawalan aras air dalam drum penjana wap loji kuasa tenaga nuklear dengan reaktor berpendingin air bertekanan (PWPR). Gabungan sistem kawalan automatik berdasarkan gelung kawalan dengan pembetulan PI telah dicadangkan dan diselaraskan simetri secara optimum, dengan melancarkan isyarat rujukan dan pembetulan peranti dari gangguan yang boleh diukur dari dalam dan luar. Satu teknik telah dibina bagi menilai kesan perubahan ciri kualiti transien gabungan berjentera pada aras air di tong dandang stim dan drum penjana wap pada keselamatan, kebolehpercayaan, ketahanan dan kecekapan peralatan tenaga terma loji janakuasa. Perbandingan dibuat pada kualiti tiga ACS (sistem digital khas dan tiga signal dengan keadaan pemerhati dan gabungan ACS yang dicadangkan). Hasil sistem simulasi transien yang dicadangkan dan tiga signal biasa berjentera mengesahkan kelebihan pada yang pertama.

Some Applications and Trends in Automatic Control of Thermal Power Plants

1978 ◽  
Vol 11 (1) ◽  
pp. 57-72 ◽  
Author(s):  
J. Debelle ◽  
R. Baeyens ◽  
J.Cl. Lemoine ◽  
F. Van de Meulebroeke
Keyword(s):  
Automatic Control ◽  
Power Plants ◽  
Thermal Power ◽  
Thermal Power Plants
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