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Energies
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Advanced Modeling and Control of Hydropower Generation Systems
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Advanced Modeling and Control of Hydropower Generation Systems

A special issue of Energies (ISSN 1996-1073). This special issue belongs to the section "F: Electrical Engineering".

Deadline for manuscript submissions: closed (24 January 2024) | Viewed by 3567

Special Issue Editors

Prof. Dr. Xiaodong Yu

E-Mail Website
Guest Editor
College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing 210024, China
Interests: hydropower station; hydro-turbine regulating system; stability and regultaion quality; hydraulic transient; control strategy
Prof. Dr. Jian Zhang

E-Mail Website
Guest Editor
College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing 210024, China
Interests: hydraulic transient; hydropower station; pumped storage power station; long-distance water supply; water hammer; surge tank

Special Issue Information

Dear Colleagues,

Hydropower is the largest source of renewable energy and plays a critical role in decarbonizing the power system. Nowadays, the proportion of hydropower in modern power systems is increasing, and many scholars are devoting significant attention to hydropower generation systems. Hydropower generation systems are complex, involving elaborate combinations of hydraulic–mechanical–electrical factors. Thus, it is important to establish refined and advanced models for mechanism and application research. At the same time, the complexity and variability of the power grid render the operating conditions for hydropower generation systems uncertain. Consequently, it is of great importance to innovate control modes to achieve intelligent, efficient and reliable regulation.

This Special Issue aims to present the most recent advances related to the theory and/or application of the various topics and technologies of hydropower generation systems. All submissions within the scope of the listed keywords are welcome.

The topics of interest for publication include, but are not limited to：

  • Hydropower generation system;
  • Pumped storage power station;
  • Advanced modelling and simulation;
  • Optimal operation;
  • Hydro-turbine;
  • Surge tank;
  • Stability analysis;
  • Regulation quality;
  • Performance evaluation;
  • Control strategy;
  • Hydropower unit condition monitoring and fault diagnosis;
  • Wind–photovoltaic–hydropower system.

Prof. Dr. Xiaodong Yu
Prof. Dr. Jian Zhang
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Energies is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • Hydropower, Grid, Pumped storage

Published Papers (3 papers)

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Research

13 pages, 1349 KiB  
Article
Hydropower Unit Commitment Using a Genetic Algorithm with Dynamic Programming
by Shuangquan Liu, Pengcheng Wang, Zifan Xu, Zhipeng Feng, Congtong Zhang, Jinwen Wang and Cheng Chen
Energies 2023, 16(15), 5842; https://doi.org/10.3390/en16155842 - 7 Aug 2023
Viewed by 851
Abstract
This study presents a genetic algorithm integrated with dynamic programming to address the challenges of the hydropower unit commitment problem, which is a nonlinear, nonconvex, and discrete optimization, involving the hourly scheduling of generators in a hydropower system to maximize benefits and meet [...] Read more.
This study presents a genetic algorithm integrated with dynamic programming to address the challenges of the hydropower unit commitment problem, which is a nonlinear, nonconvex, and discrete optimization, involving the hourly scheduling of generators in a hydropower system to maximize benefits and meet various constraints. The introduction of a progressive generating discharge allocation enhances the performance of dynamic programming in fitness evaluations, allowing for the fulfillment of various constraints, such as unit start-up times, shutdown/operating durations, and output ranges, thereby reducing complexity and improving the efficiency of the genetic algorithm. The application of the genetic algorithm with dynamic programming and progressive generating discharge allocation at the Manwan Hydropower Plant in Yunnan Province, China, showcases increased flexibility in outflow allocation, reducing spillages by 79%, and expanding high-efficiency zones by 43%. Full article
(This article belongs to the Special Issue Advanced Modeling and Control of Hydropower Generation Systems)
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19 pages, 4113 KiB  
Article
Monitoring and Analysis of the Operation Performance of Vertical Centrifugal Variable Frequency Pump in Water Supply System
by Jianyong Hu, Chaohao Wang, Chengju Shan and Yunhui Guo
Energies 2023, 16(11), 4526; https://doi.org/10.3390/en16114526 - 5 Jun 2023
Cited by 3 | Viewed by 1015
Abstract
The stable operation of a variable frequency pump is of great importance to the management of a water supply project. Analyzing the operation performance based on monitoring data is necessary for maintaining the stable operation of a variable frequency pump. Several sensors are [...] Read more.
The stable operation of a variable frequency pump is of great importance to the management of a water supply project. Analyzing the operation performance based on monitoring data is necessary for maintaining the stable operation of a variable frequency pump. Several sensors are installed at six monitoring points on the pump to collect signals including vibration velocity, vibration acceleration and vibration displacement. Monitoring signals are preprocessed by smoothing, adjusting waveform trend and filtering on the basis of Fast Fourier Transform (FFT). Then, the vibration features are extracted by power spectrum analysis and cepstrum analysis methods. According to the extracted features, the vibration law and actual operation performance of a variable frequency pump under different operating conditions are analyzed. Results indicate that the vibration amplitude of the pump varies sharply under the operating conditions of [15 Hz, 20 Hz] and [30 Hz, 35 Hz]. The operating condition of [0 Hz, 15 Hz] is the restricted operating area of the pump. The vibration and noise continue increasing under the operating conditions of [35 Hz, 50 Hz] and reach the maximum values at 50 Hz. Therefore, the optimal operating is within the range of [20 Hz, 30 Hz]. Finally, by analyzing the critical values of the operating conditions, the fault diagnosis and the evaluation of the operating status are conducted. Full article
(This article belongs to the Special Issue Advanced Modeling and Control of Hydropower Generation Systems)
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15 pages, 2985 KiB  
Article
Comparison on Hydraulic Characteristics of Vertical and Horizontal Air-Cushion Surge Chambers in the Hydropower Station under Load Disturbances
by Tingyu Xu, Sheng Chen, Jian Zhang, Xiaodong Yu, Jiawen Lyu and Haibin Yan
Energies 2023, 16(3), 1501; https://doi.org/10.3390/en16031501 - 2 Feb 2023
Cited by 1 | Viewed by 1287
Abstract
Hydroelectric energy is an increasingly vital and effective renewable energy for modern society. The protective effect on the water hammer in the pipeline, the operational stability of the hydropower system, and the flow regime in the air-cushion surge chamber (ACSC) are three main [...] Read more.
Hydroelectric energy is an increasingly vital and effective renewable energy for modern society. The protective effect on the water hammer in the pipeline, the operational stability of the hydropower system, and the flow regime in the air-cushion surge chamber (ACSC) are three main problems during the design of the hydropower station with an ACSC. Comprehensively comparing the above issues between the horizontal and vertical ACSCs is meaningful. This study established the one-dimensional (1D) model based on the Method of Characteristics (MOC) under large load disturbances (LLD) and the rigid water column theory under small load disturbances (SLD). At the same time, the three-dimensional (3D) model was built based on the Volume of Fluid (VOF) to obtain a more detailed flow regime in the ACSC under the load acceptance condition. The results showed that the vertical ACSC was superior to the horizontal one for its large safe water depth, smaller maximum air pressure, and more stable flow under LLD. In contrast, the horizontal one was better than the vertical one for its extensive water area to calm the SLD during the transient process and smaller fluctuation of the surge under SLD. This study will provide a reference for a future project on selecting the structure of the ACSC. Full article
(This article belongs to the Special Issue Advanced Modeling and Control of Hydropower Generation Systems)
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