The startup process of gas turbines driven by the static frequency converter (SFC) exhibits complicated electromechanical coupling characteristics. Conventional simulation methods fail to integrate physical modeling with sequence of event (SOE) data and cannot support co-simulation of multiple startup schemes at the power station level. In this paper, a hierarchical digital twin architecture oriented to gas turbine SFC startup is established to realize intelligent deduction of sequential control and break through the technical limitations of traditional simulations. Relevant waveforms and data of the F-class heavy-duty gas turbine during startup are obtained via the digital twin. The maximum effective value of voltage is 12.07 kV, the maximum effective value of current is 1.6 kA, and the peak output power of the SFC reaches 15.67 MW. The system achieves the rated speed (3000 rpm) within an acceptable start-up duration, demonstrating satisfactory dynamic response. All the above data conform to the preset startup parameters and operation control logic of heavy-duty gas turbines.
As a crucial auxiliary system of hydropower stations with long diversion pipelines, the pressure oil system (POS) undertakes the control of ball valve opening and closing, which directly determines the safe and stable operation of hydropower units. To meet the industrial demand of intelligent operation and maintenance...
Ling-Hua Hou, Meng-Lin Wang, Zhi-Jun Zhou et al.· Engineering Research Express· 0 citations
Abstract Gas turbines are widely used as prime movers in marine power systems due to their high power density and thermal efficiency. With the increasing application of high-power gas turbine systems in the maritime industry, the modelling and dynamic characteristic analysis of medium-voltage gas turbine power systems...
Yu-Bo Geng, Yi Guo, Kai-Jie Zhang et al.· Polish Maritime Research· 0 citations
To ensure both safety and rapidity in the start-up process of the supercritical carbon dioxide (S-CO₂) power generation system, this paper proposes a two-stage hot start-up control strategy (SUCS) for a 600 MW S-CO₂ recompression cycle power generation system (SCRCPGS). The two stages respectively utilize a valve and i...
Ya-Long Guo, Chen Yang, Nan Yin et al.· International Conference on...· 0 citations
Significant and prolonged voltage drops during emergencies in external power supply grids of industrial companies result in disruptions of continuous production processes that use asynchronous motors. Voltage drops normally last from hundreds of milliseconds to several seconds. The use of supercapacitor-based (SC-based...
P. Ilyushin, Sergey Shavlovskiy, E. Boyko· 2026 International Russian A...· 0 citations
Modeling and simulation of jet engine start-up is a complex and challenging field, as it involves intricate modules and processes. Achieving accurate results depends on the correct and synchronized operation of the engine, starter, controller, and fuel system components. This paper presents a comprehensive mathematical...
M. Montazeri-Gh, A. Y. Dastjerdi· International Journal of Eng...· 0 citations
Startup transients are critical in gas generator cycle liquid rocket engines because pressure overshoot, mixture-ratio excursions, and turbopump instability can occur before steady operation. This study compares conventional pyrostarter and tank head start sequences using a system-level transient model of propellant fe...
S. Yoon, Insang Moon· Aerospace· 1 citation
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