Development of a mathematical model of the control system for a 6MW turbine-generator set

Melnikov, Dmitrij V. (author), Chubarov, Fedor L. (author), Sizov, Alexander N. (author), Raevsky, Vladimir A. (author), Orekhov, Sergey Y. (author)

The stability of the rotation frequency of the synchronous electric generator as part of the turbinegenerator set is one of the most important indicators determining the quality of the electric power and its suitability for various consumers. Maintaining the rated frequency of the generator rotor spinning and, as a consequence, the frequency of the generated current directly depends on the balance between the mechanical power developed by the steam turbine and the electric power consumed by the load. The automatic control system must constantly adjust the power generated by the steam turbine by changing the steam supply to its blade system in order to maintain the frequency at a specified level. The paper identifies the still ignored features of the control system of the turbine-generator set rotation frequency and power using a mathematical model to obtain the data needed to design of the turbine set. The development of the interconnected mathematical models of the turbine set elements is described, i.e. the synchronous generator, steam turbine, chambers in the turbine steam path and the implementation of the turbine-generator set as a whole. The results of the computational experiments simulating the disturbing impact on the turbine-generator set are presented.

• Language: English
• Keywords: steam turbine, synchronous generator, turbine-generator set, controlling system, computer modelling, computational experiment
• Work type: Article
• Typology: 1.01 - Original Scientific Article
• Organization: FE - Faculty of Electrical Engineering
• Year: 2025
• Number of pages: Str. 288-299
• Numbering: Letn. 92, št. 5
• PID: 20.500.12556/RUL-183583
• UDC: 621.311:62-52
• ISSN on article: 0013-5852
• COBISS.SI-ID: 280556291
• Publication date in RUL: 15.06.2026

Record is a part of a journal

• Title: Elektrotehniški vestnik
• Publisher: Strokovna zadruga koncesijoniranih elektrotehnikov, Elektrotehniška zveza Slovenije
• ISSN: 0013-5852
• COBISS.SI-ID: 742916

Licences

• License: CC BY 4.0, Creative Commons Attribution 4.0 International
• Link: http://creativecommons.org/licenses/by/4.0/
• Description: This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.

Secondary language

• Language: Slovenian
• Title: Razvoj matematičnega modela krmilnega sistema za 6 MW turbinsko-generatorski sklop

Abstract

Stabilnost frekvence vrtenja sinhronega električnega generatorja v turbinsko-generatorskem sklopu je ključni pokazatelj kakovosti električne energije in njene uporabnosti za različne porabnike. Ohranitev nazivnega vrtilnega momenta rotorja generatorja in s tem frekvence proizvedenega toka je odvisna od ravnovesja med mehansko močjo, ki jo razvije parna turbina, in električno močjo, ki jo porabi obremenitev. Avtomatski krmilni sistem nenehno prilagaja moč turbine z uravnavanjem dovoda pare, da ohrani frekvenco na želeni vrednosti. Članek s pomočjo matematičnega modela opiše še premalo raziskane značilnosti krmilnega sistema frekvence vrtenja in moči turbinsko-generatorskega sklopa ter opisuje razvoj povezanih modelov posameznih elementov sklopa (sinhroni generator, parna turbina, komore v parni poti) in simulacijo delovanja celotnega sistema. Predstavljeni so tudi rezultati simulacij, ki prikazujejo odziv sklopa na motnje.

• Keywords: sinhroni električni generator, kakovost električne energije, vrtilni moment, matematični model