An Improved ADRC Design Based on a Generalized Differentiator for a Nonlinear Hydraulic Turbine Regulating System Article Swipe
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· 2025
· Open Access
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· DOI: https://doi.org/10.3390/pr13010086
· OA: W4405987930
In recent years, with the advancement of renewable energy technologies, hydropower has assumed an increasingly important regulatory and balancing role in the power system. It plays an important role in grid frequency stability. This requires a faster response speed and superior disturbance immunity of the hydropower regulation system. The characteristics of active disturbance rejection control (ADRC) make it suitable for solving these kinds of nonlinearities, oscillations, and disturbances of hydro-generating units. The traditional ADRC has a complex structure and a large amount of parameter adjustments. In this paper, an improved ADRC based on a generalized differentiator is proposed, and the control loop consists of only the proportional and integrator. The parameters to be adjusted are reduced to two. The structure of the traditional ADRC is simplified. In several types of typical linear systems, the improved ADRC can harvest almost the same dynamic performance as the traditional ADRC. After applying the improved method to the simulation of a hydraulic turbine speed control system, a satisfactory response speed, superior anti-interference ability, and robustness are obtained.
