Authors: I.A. Lobur, R.V. Kotlyarov

Title of the article: Development of a system for automatic control of steam turbine network water temperature

Year: 2026, Issue: 2, Pages: 3-9

Branch of knowledge: 2.4.2. Electrotechnical complexes and systems (engineering)

Index UDK: 681.516.32:621.165

DOI: 10.26730/1816-4528-2026-2-3-9

Abstract: The development and implementation of automatic control systems for the main technological parameters of a steam turbine makes it possible to increase its productivity, reduce the risks of accidents and breakdowns, and therefore is an urgent scientific and practical task. The main technological parameters of a steam turbine that are subject to measurement, control and regulation are temperatures at various points of the turbine unit. In the article, the technological control object is a horizontal network heater and a heating steam pipeline entering the heater. The temperature of the network water at the heater outlet is selected as an adjustable technological parameter. Based on the mathematical model of the control object in the form of a transfer function, the parameters of the automatic controller as part of a single-circuit automatic temperature control system were calculated. Simulation of a single-circuit automatic control system was carried out using standard tools of the SciLAB program. Direct indicators of the quality of regulation have been determined. As a result of comparing direct indicators of the quality of regulation with their permissible values, it was established that a single-circuit automatic control system cannot cope with regulating the temperature of network water. Based on mathematical models of the leading and inertial sections of the control object in the form of transfer functions, the parameters of the master and slave automatic controllers as part of a multi-circuit cascade automatic temperature control system were calculated. A cascade automatic control system was modeled using standard SciLAB software. Direct indicators of the quality of regulation have been determined. As a result of comparing direct indicators of the quality of regulation with their permissible values, it was established that the cascade automatic control system copes with regulating the temperature of network water and is characterized by a sufficient margin of stability.

Key words: automatic temperature control system single-circuit automatic control system cascade automatic control system control quality indicators steam turbine simulation SciLAB

Receiving date: 27.01.2026

Approval date: 15.03.2026

Publication date: 04.06.2026

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