Vibration Analysis and Optimal Control of Hydraulic Turbine Based on Sliding Mode Control Strategy
The turbine generator unit plays a very important role in maintaining the stability of the power system and improving the quality of power. However, hydropower units will bring the risk of low-frequency oscillation or ultra-low frequency oscillation to the power system, threatening the stable operat...
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IEEE
2025-01-01
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| Series: | IEEE Access |
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| Online Access: | https://ieeexplore.ieee.org/document/10829572/ |
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| author | Xiaoping Huang Yaqiong Zhang Wenzhe Huang |
| author_facet | Xiaoping Huang Yaqiong Zhang Wenzhe Huang |
| author_sort | Xiaoping Huang |
| collection | DOAJ |
| description | The turbine generator unit plays a very important role in maintaining the stability of the power system and improving the quality of power. However, hydropower units will bring the risk of low-frequency oscillation or ultra-low frequency oscillation to the power system, threatening the stable operation of the power grid. Therefore, it is necessary to deeply study the mechanism of low-frequency oscillation of hydropower units, analyze the adverse factors to the system and adjust and control them. In this paper, a speed change method based on exponential rules is proposed on the basis of the traditional axial flow turbine model, and a coupling model of fuzzy sliding mode control of the turbine is constructed. A control strategy combining fuzzy logic and sliding mode is adopted to adjust the convergence speed according to the change of working conditions and working points by using mechanical power. By incorporating the angle and voltage variables into the sliding mode function design, the influence of controller output on system damping is improved, and the stability of working angle output is improved. The simulation results under various working conditions show that the control law can suppress the low-frequency oscillation of the system when the system is subjected to power disturbance, effectively improve the power angle oscillation behavior of the hydropower unit, significantly improve the stability of the system and the robustness of the controller, and verify the effectiveness and feasibility of the designed controller’s power angle oscillation suppression ability. It provides theoretical support and a new solution for suppressing low frequency oscillation of hydro-generator set. |
| format | Article |
| id | doaj-art-19bd61afd1674d549f19ca0fd3937f07 |
| institution | Kabale University |
| issn | 2169-3536 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Access |
| spelling | doaj-art-19bd61afd1674d549f19ca0fd3937f072025-01-24T00:01:59ZengIEEEIEEE Access2169-35362025-01-01139615962610.1109/ACCESS.2025.352618210829572Vibration Analysis and Optimal Control of Hydraulic Turbine Based on Sliding Mode Control StrategyXiaoping Huang0https://orcid.org/0000-0002-8918-519XYaqiong Zhang1https://orcid.org/0000-0003-4755-7431Wenzhe Huang2https://orcid.org/0000-0001-6146-2493School of Electrical and Electronic Engineering, Guilin University of Technology, Guilin, ChinaSchool of Electrical and Electronic Engineering, Guilin University of Technology, Guilin, ChinaCollege of Energy and Mechanical Engineering, Shanghai University of Electric Power, Shanghai, ChinaThe turbine generator unit plays a very important role in maintaining the stability of the power system and improving the quality of power. However, hydropower units will bring the risk of low-frequency oscillation or ultra-low frequency oscillation to the power system, threatening the stable operation of the power grid. Therefore, it is necessary to deeply study the mechanism of low-frequency oscillation of hydropower units, analyze the adverse factors to the system and adjust and control them. In this paper, a speed change method based on exponential rules is proposed on the basis of the traditional axial flow turbine model, and a coupling model of fuzzy sliding mode control of the turbine is constructed. A control strategy combining fuzzy logic and sliding mode is adopted to adjust the convergence speed according to the change of working conditions and working points by using mechanical power. By incorporating the angle and voltage variables into the sliding mode function design, the influence of controller output on system damping is improved, and the stability of working angle output is improved. The simulation results under various working conditions show that the control law can suppress the low-frequency oscillation of the system when the system is subjected to power disturbance, effectively improve the power angle oscillation behavior of the hydropower unit, significantly improve the stability of the system and the robustness of the controller, and verify the effectiveness and feasibility of the designed controller’s power angle oscillation suppression ability. It provides theoretical support and a new solution for suppressing low frequency oscillation of hydro-generator set.https://ieeexplore.ieee.org/document/10829572/Hydraulic turbinefuzzy sliding mode controlrobust controlvibration analysisoptimal controlHTRS |
| spellingShingle | Xiaoping Huang Yaqiong Zhang Wenzhe Huang Vibration Analysis and Optimal Control of Hydraulic Turbine Based on Sliding Mode Control Strategy IEEE Access Hydraulic turbine fuzzy sliding mode control robust control vibration analysis optimal control HTRS |
| title | Vibration Analysis and Optimal Control of Hydraulic Turbine Based on Sliding Mode Control Strategy |
| title_full | Vibration Analysis and Optimal Control of Hydraulic Turbine Based on Sliding Mode Control Strategy |
| title_fullStr | Vibration Analysis and Optimal Control of Hydraulic Turbine Based on Sliding Mode Control Strategy |
| title_full_unstemmed | Vibration Analysis and Optimal Control of Hydraulic Turbine Based on Sliding Mode Control Strategy |
| title_short | Vibration Analysis and Optimal Control of Hydraulic Turbine Based on Sliding Mode Control Strategy |
| title_sort | vibration analysis and optimal control of hydraulic turbine based on sliding mode control strategy |
| topic | Hydraulic turbine fuzzy sliding mode control robust control vibration analysis optimal control HTRS |
| url | https://ieeexplore.ieee.org/document/10829572/ |
| work_keys_str_mv | AT xiaopinghuang vibrationanalysisandoptimalcontrolofhydraulicturbinebasedonslidingmodecontrolstrategy AT yaqiongzhang vibrationanalysisandoptimalcontrolofhydraulicturbinebasedonslidingmodecontrolstrategy AT wenzhehuang vibrationanalysisandoptimalcontrolofhydraulicturbinebasedonslidingmodecontrolstrategy |