| Document Type
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BL
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| Record Number
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861631
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| Main Entry
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Yang, Weijia
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| Title & Author
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Hydropower plants and power systems : : dynamic processes and control for stable and efficient operation /\ Weijia Yang.
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| Publication Statement
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Cham, Switzerland :: Springer,, 2019.
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| Series Statement
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Springer theses
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| Page. NO
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1 online resource
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| ISBN
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3030172422
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: 3030172430
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: 3030172449
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: 9783030172428
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: 9783030172435
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: 9783030172442
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3030172414
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9783030172411
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| Notes
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Doctoral thesis accepted by Uppsala University, Sweden.
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| Contents
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Intro; Supervisor's Foreword; Parts of this thesis have been published in the following articles:; Acknowledgements; Contents; Abbreviations and Symbols; 1 Introduction; 1.1 Power System Stability; 1.2 Features of Hydropower Generating Systems; 1.2.1 Hydraulic-Mechanical-Electrical Coupling System; 1.2.2 Problems of Oscillations; 1.3 Previous Research; 1.3.1 Dynamic Processes and Modelling of Hydropower Plants; 1.3.2 Regulation Quality and Operating Stability; 1.3.3 Efficient Operation: Wear, Efficiency and Financial Impacts; 1.3.4 Brief Summary; 1.4 Hydropower Research at Uppsala University
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1.5 Scope of This Thesis1.6 Outline of This Thesis; References; 2 Methods and Theory; 2.1 Principles of Methods; 2.1.1 Numerical Simulation; 2.1.2 On-Site Measurement; 2.1.3 Theoretical Derivation; 2.2 Engineering Cases: HPPs in Sweden and China; References; 3 Various Hydropower Plant Models; 3.1 Numerical Models in TOPSYS; 3.1.1 Model 1; 3.1.2 Model 4 and 4-S; 3.2 Numerical Models in MATLAB; 3.2.1 Model 2-L (in Simulink); 3.2.2 Model 5 and 5-S (in SPS); 3.3 Models for Theoretical Derivation; 3.3.1 Model 3-F; 3.3.2 Model 3-L; 3.3.3 Model 6
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3.4 Numerical Models in MATLAB for HPPs with Kaplan Turbines (Model 2-K)3.4.1 System Components; 3.4.2 Turbine Characteristic from Measurements; References; 4 Stable Operation Regarding Frequency Stability; 4.1 Case Studies on Different Operating Conditions; 4.1.1 Comparison of Simulations and Measurements; 4.1.2 Discussion; 4.2 Response Time for Primary Frequency Control; 4.2.1 Specifications of Response of PFC; 4.2.2 Formula and Simulation of Response Time; 4.3 Frequency Stability of Isolated Operation; 4.3.1 Theoretical Derivation with the Hurwitz Criterion; 4.3.2 Numerical Simulation
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6 Efficient Operation and Balancing Renewable Power Systems6.1 Wear and Tear Due to Frequency Control; 6.1.1 Description and Definition; 6.1.2 Cause; 6.1.3 Analysis on Influencing Factors; 6.2 Controller Filters for Wear Reduction Considering Frequency Quality of Power Systems; 6.2.1 Method and Model; 6.2.2 On-Site Measurements; 6.2.3 Time Domain Simulation; 6.2.4 Frequency Domain Analysis: Stability of the System; 6.2.5 Concluding Comparison Between Different Filters; 6.3 Framework for Evaluating the Regulation of Hydropower Units; 6.3.1 The Framework; 6.3.2 Methods
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| Abstract
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This book reports on a comprehensive study addressing the dynamic responses of hydropower plants under diverse conditions and disturbances, and analyzes their stability and oscillations. Multiple models based on eight existing hydropower plants in Sweden and China were developed and used for simulations and theoretical analysis with various degrees of complexity and for different purposes, and compared with on-site measurements for validations. The book offers important insights into the understanding of the hydraulic, mechanical and electrical coupling mechanisms, up to market conditions and incentives. It recommends control strategies for a more stable and efficient operation of hydropower plants.
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| Subject
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Hydroelectric power plants.
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| Subject
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Hydroelectric power plants.
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| Subject
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TECHNOLOGY ENGINEERING-- Mechanical.
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| Dewey Classification
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621.31/2134
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| LC Classification
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TK1081
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