Choosing Actuators for Automatic Control Systems of Thermal Power Plants

2015 ◽  
Vol 48 (6) ◽  
pp. 464-466
Author(s):  
A. I. Gorbunov ◽  
O. V. Serdyukov
Keyword(s):  
Automatic Control ◽  
Control Systems ◽  
Power Plants ◽  
Thermal Power ◽  
Thermal Power Plants ◽  
Automatic Control Systems

Automatic Control Systems of Thermal Power Plants. State of the Art and Development Prospects

2019 ◽  
pp. 116-137
Author(s):  
V.A. Markov ◽  
V.I. Shatrov
Keyword(s):  
Automatic Control ◽  
Control Systems ◽  
Power Plants ◽  
Internal Combustion Engines ◽  
Thermal Power ◽  
Technical Conference ◽  
Thermal Power Plants ◽  
Combustion Engines ◽  
Automatic Control Systems ◽  
Russian Scientific

The article considers the relevance of research aimed at improving the automatic control systems for thermal power plants, mainly with piston internal combustion engines, based on the analysis of the reports of the all-Russian scientific and technical conference named after Professor V.I. Krutov. These plants are widely used in various sectors of the economy --- power engineering, transport, agriculture. The current level of development of such systems is assessed; the conclusions about the prospects for further development of automatic control systems for thermal power plants with piston engines are drawn. The main directions of their improvement are associated with the need for further improvement of fuel efficiency and reduction of toxicity of exhaust gases of thermal power plants, increasing the dynamic characteristics of internal combustion engines. The main directions of research in the field of fuel supply equipment of diesel engines, the working process of engines, and their adaptation for working on various alternative fuels are discussed. The article is based on the reports of the All-Russian Scientific and Technical Conference n.a. Professor V.I. Krutov (30.01.2019)

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.

scholarly journals Повышение астатизма системы автоматического управления путем введения положительной обратной связи

2020 ◽  
Vol 43 (2) ◽  
Author(s):  
ANDREY KHANNANOV ◽  
KIRA CHUPINA ◽  
VALERY USOLTCEV
Keyword(s):  
Automatic Control ◽  
Control Systems ◽  
Positive Feedback ◽  
Power Plants ◽  
Proportional Integral ◽  
Automatic Control Systems ◽  
Non Linear ◽  
Additional Positive Feedback

Подчиненные системы автоматического управления (САУ) широко используются в технике, в том числе в судовых энергетических установках. Необходимость ограничения параметров объекта управления, таких как синхронный генератор или судовой электропривод, делает их нелинейными. Применение пропорционально-интегральных регуляторов создает проблему «интегрального насыщения», возникновения свободных движений в САУ при сходе регуляторов с ограничения. Авторами предлагается повысить астатизм САУ и решить проблему «интегрального насыщения» путем введения дополнительной положительной обратной связи с выхода объекта управления в пропорциональный канал регулятора. Эффективность таких САУ исследовалась нами с помощью анализа математических моделей нелинейных САУ и их цифрового моделирования. Результаты исследования: описана математическая модель одного из контуров САУ с дополнительной положительной обратной связью. Доказано, что введение такого вида связи позволяет увеличить астатизм САУ и исключить эффект «интегрального насыщения» при астатизме первого порядка, что повышает точность САУ при отработке управляющих сигналов. Предложен новый способ исключения эффекта «интегрального насыщения» в широкодиапазонных регуляторах напряжения судовых синхронных генераторов промысловых систем освещения без применения аппаратных защитных средств. Таким образом, доказана эффективность введения дополнительной положительной обратной связи на увеличение точности САУ и исключения эффекта «интегрального насыщения». Отмечена низкая чувствительность эффекта введения положительной обратной связи к изменению параметров САУ. Subordinate automatic control systems (SACS) are widely used in engineering inclusive of ship power plants. The need to limit specific parameters of the object makes them non-linear. The use of proportional-integral regulators leads to the problem of integral saturation, the emergence of free movements in SACS when the regulators descend from the limit. The authors propose to increase astatism of SACS and solve the problem of integral saturation by introducing additional positive feedback.

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

CONTINUAL OPTIMISATION OF CONTROL SYSTEMS IN THERMAL POWER PLANTS

1989 ◽  
pp. 145-152
Author(s):  
M.N. Narakesari ◽  
V.S. Dorai ◽  
Indu Narasimhan ◽  
M. Venkatram
Keyword(s):  
Control Systems ◽  
Power Plants ◽  
Thermal Power ◽  
Thermal Power Plants
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