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Water
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Hydraulic Transient of Hydropower Station and Pump Station
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Hydraulic Transient of Hydropower Station and Pump Station

A special issue of Water (ISSN 2073-4441). This special issue belongs to the section "Hydraulics and Hydrodynamics".

Deadline for manuscript submissions: closed (31 March 2022) | Viewed by 17972

Special Issue Editor

Dr. Wencheng Guo

E-Mail Website
Guest Editor
School of Civil and Hydraulic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
Interests: hydropower system; hydraulics; hydrodynamics; hydraulic transient; turbine regulation; power system stability; unsteady flow; renewable energy; energy storage
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Hydraulic machinery and systems are the key components for the sustainable development of energy and water resources including various transport process of liquids. The hydropower station and pump station are the two typical hydraulic machinery systems. By using hydraulic turbine, pump and pipeline system, the hydropower station and pump station realize the energy conversion and fluid transportation. With the rapid development of hydroelectric energy and water resources allocation, more and more hydropower stations and pump stations are established all over the world. The energy structure and utilization factor of water resources are significantly optimized and improved.

The hydropower station and pump station are complicated hydraulic systems. The design, operation and maintenance of hydropower station and pump station are based on the calculation and analysis of hydraulic transient. The research achievements provide a basis and guidance for the safe, stable and efficient operation of hydropower station and pump station. The hydraulic transient and control are the key aspects for the design, operation and maintenance of hydropower station and pump station.

We would like to invite papers dealing with the theories, technologies and applications of hydraulic transient of hydropower station and pump station. Specific topics include but are not limited to:
  • Numerical simulation of hydraulic transient processes;
  • Model experiment of hydraulic transient processes;
  • Dynamic behavior of hydraulic system;
  • Hydraulic design and optimization of pipeline system;
  • Operation rules of valves and gates;
  • Transient processes for hydraulic, mechanical and electrical coupling system;
  • Control strategies for safe, stable and efficient operation;
  • System stability and load frequency control;
  • Pressure reduction facilities and measures;
  • Vibration mechanism and damping;
  • Modeling and simulation of unsteady flow;
  • Control optimization of speed regulating system;
  • Hydraulic characteristics of turbine and pump;
  • Pumped and energy storage.

Prof. Dr. Wencheng Guo
Guest Editor

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. Water 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 station
  • pump station
  • pumped storage power station
  • turbine
  • pump
  • hydraulic system
  • unsteady flow
  • transient process
  • control strategy
  • fluid dynamics
  • hydraulic design
  • hydraulic regulation
  • stability

Published Papers (3 papers)

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Research

20 pages, 3134 KiB  
Article
Sluice Gate Design and Calibration: Simplified Models to Distinguish Flow Conditions and Estimate Discharge Coefficient and Flow Rate
by Arash Yoosefdoost and William David Lubitz
Water 2022, 14(8), 1215; https://0-doi-org.brum.beds.ac.uk/10.3390/w14081215 - 10 Apr 2022
Cited by 6 | Viewed by 12726
Abstract
Sluice gates are common hydraulic structures for controlling and regulating flow in open channels. This study investigates five models’ performance in distinguishing conditions of flow regimes, estimating the discharge coefficient (Cd) and flow rate. Experiments were conducted for different gate [...] Read more.
Sluice gates are common hydraulic structures for controlling and regulating flow in open channels. This study investigates five models’ performance in distinguishing conditions of flow regimes, estimating the discharge coefficient (Cd) and flow rate. Experiments were conducted for different gate openings, flow rates, upstream and downstream conditions. New equation forms and methods are proposed to determine Cd for energy–momentum considering losses (EML) and HEC-RAS models. For distinguishing the flow regimes, results indicated a reasonable performance for energy–momentum (EM), EML, and Swamee’s models. For flow rate and discharge coefficient performance of EM, EML, and Henry’s models in free flow and for EM and EML in submerged flow were reasonable. The effects of physical scale on models were investigated. There were concerns about the generality and accuracy of Swamee’s model. Scaling effects were observed on loss factor k in EML. A new equation and method were proposed to calibrate k that improved the EML model’s accuracy. This study facilitates the application and analysis of the studied models for the design or calibration of sluice gates and where the flow in open channels needs to be controlled or measured using sluice gates such as irrigation channels or water delivery channels of small run-of-river hydropower plants. Full article
(This article belongs to the Special Issue Hydraulic Transient of Hydropower Station and Pump Station)
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21 pages, 5233 KiB  
Article
Comprehensive Regulation Benefits of Hydropower Generation System in Reducing Wind Power Fluctuation
by Beibei Xu, Jingjing Zhang, Shuai Yuan, Huanhuan Li, Diyi Chen and Junzhi Zhang
Water 2021, 13(21), 2987; https://0-doi-org.brum.beds.ac.uk/10.3390/w13212987 - 22 Oct 2021
Cited by 2 | Viewed by 2038
Abstract
The use of renewable energy has become a necessity to generate electricity, and is taking the place of conventional coal-fired power, as it has clear economic and environmental benefits. The purpose of this paper is to quantify the comprehensive benefits of hydropower in [...] Read more.
The use of renewable energy has become a necessity to generate electricity, and is taking the place of conventional coal-fired power, as it has clear economic and environmental benefits. The purpose of this paper is to quantify the comprehensive benefits of hydropower in reducing wind power fluctuation in a hybrid coal-fired/hydro/wind power system. To achieve this, a wind–hydropower generation system must be established, and its complementary characteristic is also illustrated based on the resultant wind speed. Then, based on Institute of Electrical and Electronics Engineers (IEEE) 14 Bus Power System, coal-fired generation is introduced to model a final hybrid integrated power system. The comprehensive benefit evaluation method, including the power consumption profit, the peak load profit, the energy conservation profit, the guide vane fatigue cost, the maintenance cost, and the start-stop cost, is presented to assess the join operation benefits of the wind/hydropower/coal-fired integrated system. The complementary investigation shows that the hydropower system has an excellent effect on suppressing wind power fluctuation, although the fatigue damage of hydraulic guide vanes is a little severe for the time scale of hours, compared with that of seconds. The quantified benefit shows that the increased power consumption profit, the increased guide vane fatigue loss cost, the decreased peak-load profit, and the increased energy conservation profit are RMB 1262.43 million/year, RMB 0.37 million/year, RMB 333.97 million/year and RMB 0.54 million/year, with the wind and hydropower ratio increasing from 16% to 25%, which directly leads to the annual total revenue increasing to RMB 143.2673 million. The implementation of this paper can contribute to making more efficient use of wind-hydro power in conventional electricity production. Full article
(This article belongs to the Special Issue Hydraulic Transient of Hydropower Station and Pump Station)
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15 pages, 4396 KiB  
Article
Experimental Study on the Optimal Strategy for Power Regulation of Governing System of Hydropower Station
by Cong Wang, De-Kuan Wang and Jian-Ming Zhang
Water 2021, 13(4), 421; https://0-doi-org.brum.beds.ac.uk/10.3390/w13040421 - 05 Feb 2021
Cited by 4 | Viewed by 2103
Abstract
Active power instability during the power regulation process is a problem that affects the operation security of hydropower stations and the power grid. This paper focuses on the dynamic response to power regulation of a hydro-turbine governor in the power control mode. Firstly, [...] Read more.
Active power instability during the power regulation process is a problem that affects the operation security of hydropower stations and the power grid. This paper focuses on the dynamic response to power regulation of a hydro-turbine governor in the power control mode. Firstly, the mathematical model for the hydro-turbine governing system connected to the power grid is established. Then, considering the effect of water hammer and the guide vane operating speed on power oscillation and reverse power regulation, a novel control strategy based on the S-curve acceleration and deceleration control algorithm (S-curve control algorithm) is proposed to improve power regulation. Furthermore, we carried out field tests in a real hydropower station in order to compare the regulation quality of the novel control strategy based on the S-curve control algorithm with the traditional linear control strategy. Finally, the obtained results show that the proposed optimal control strategy for the hydro-turbine governor improves the stability of power regulation by effectively suppressing reverse power regulation and overshoot. This study provides a good solution for the instability of power and reverse power regulation during the regulation process of the hydro-turbine governor in the power control mode. Full article
(This article belongs to the Special Issue Hydraulic Transient of Hydropower Station and Pump Station)
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