Dual-loop synergetic feedback control strategy for single penstock multi-machine hydropower system
Source abstract
Abstract
Large-scale pumped-storage power stations typically employ a single-penstock, multi-unit configuration to reduce construction costs. However, the shared pipeline can introduce hydraulic coupling effects. During power regulation, interactions between units may compromise system stability. To address this, we propose a dual-loop synergetic feedback control method for both guide vanes and power angles, based on synergetic control theory and designed to account for inter-unit coupling. Control objectives are defined and integrated into the original differential equations to refine the model. The variations in guide vane opening and power angle for each unit are selected as the macro-variables for their respective control loops. Corresponding control laws are then derived and fed back to individual units for regulation, enabling stable output control. Simulation results demonstrate that the proposed method effectively suppresses hydraulic coupling in the shared pipeline, mitigates output oscillations, and shortens the regulation time, confirming its effectiveness.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Hydraulic flow and structures · Water Systems and Optimization · Cavitation Phenomena in Pumps
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
SDIC Yunnan Dachaoshan Hydropower Co., Ltd. 1 , Kunming 650214,
Dongfang Electric Corp Ltd. 2 , Deyang 618000,
Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology 3 , Kunming 650093,
Funding
Yun Zeng
References (35)
Show source-provided references
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