Making connections: Information transfer in hydropower generation system during the transient process of load rejection

2022 ◽  
Vol 50 ◽  
pp. 101766
Author(s):  
Pengfei Wang ◽  
Yuwen Deng ◽  
Huanhuan Li ◽  
Diyi Chen
Keyword(s):  
Transient Process ◽  
Information Transfer ◽  
Generation System ◽  
Hydropower Generation

scholarly journals Dynamic Safety Assessment in Nonlinear Hydropower Generation Systems

Complexity ◽  
2018 ◽  
Vol 2018 ◽  
pp. 1-8 ◽  
Author(s):  
Shuang Li ◽  
Yong Yang ◽  
Qing Xia
Keyword(s):  
Transient Process ◽  
Safety Assessment ◽  
Hydropower Station ◽  
Generation System ◽  
Hydropower Generation ◽  
Safety Level ◽  
Fisher Discriminant ◽  
The Stability ◽  
Evolution Behavior ◽  
Hydropower Stations

This paper focuses on the stability problems in a hydropower station. To enable this study, we consider a nonlinear hydropower generation system for the load rejection transient process based on an existing hydropower station. Herein we identify four critical variables of the generation system. Then, we carry out the dynamic safety assessment based on the Fisher discriminant method. The dynamic safety level of the system is determined, and the evolution behavior in the transient process is also performed. The result demonstrates that the hydropower generation system in this study case can operate safely, which is in a good agreement with the corresponding theory and actual engineering. Thus, the framework of dynamic safety assessment aiming at transient processes will not only provide the guidance for safe operation, but also supply the design standard for hydropower stations.

The Study Summarize of Computational Method on Transition Process in Hydropower Units

2013 ◽  
Vol 457-458 ◽  
pp. 1531-1537
Author(s):  
Bi Ying Wu ◽  
Ning Tang ◽  
Shui Guang Tong
Keyword(s):  
Transient Process ◽  
Transition Process ◽  
Computational Method ◽  
Stable Operation ◽  
Calculation Methods ◽  
Generation System ◽  
Water Power ◽  
Optimization Study ◽  
Start Up ◽  
Power Generation System

In the operation of the hydropower units, it often come across condition changes such as start-up, normal stop, increase or decrease the load and load rejection. This will cause the hydraulic transient process of the water power generation system, which is of great significance to the safe and stable operation of hydropower station. This paper analyzes the method to calculate the transient process of hydropower unit and expounds the principle of all kinds of calculation methods and steps to lay a foundation for further optimization study.

Fast-slow dynamics of a hydropower generation system with multi-time scales

2018 ◽  
Vol 110 ◽  
pp. 458-468 ◽  
Author(s):  
Huanhuan Li ◽  
Diyi Chen ◽  
Xiang Gao ◽  
Xiangyu Wang ◽  
Qingshuang Han ◽  
...  
Keyword(s):  
Time Scales ◽  
Slow Dynamics ◽  
Generation System ◽  
Hydropower Generation

K-1526 Development of Counter-Rotating Type Hydropower Generation System

2001 ◽  
Vol II.01.1 (0) ◽  
pp. 325-326
Author(s):  
Keiichi TOMINAGA ◽  
Toshiaki KANEMOTO ◽  
Tasuku SATOU
Keyword(s):  
Generation System ◽  
Hydropower Generation

scholarly journals Performance evaluation in enabling safety for a hydropower generation system

2019 ◽  
Vol 143 ◽  
pp. 1628-1642 ◽  
Author(s):  
Huanhuan Li ◽  
Beibei Xu ◽  
Alireza Riasi ◽  
Przemyslaw Szulc ◽  
Diyi Chen ◽  
...  
Keyword(s):  
Performance Evaluation ◽  
Generation System ◽  
Hydropower Generation

Nonlinear fast–slow dynamics of a coupled fractional order hydropower generation system

2018 ◽  
Vol 27 (12) ◽  
pp. 128202 ◽  
Author(s):  
Xiang Gao ◽  
Diyi Chen ◽  
Hao Zhang ◽  
Beibei Xu ◽  
Xiangyu Wang
Keyword(s):  
Fractional Order ◽  
Slow Dynamics ◽  
Generation System ◽  
Hydropower Generation

scholarly journals Comprehensive Regulation Benefits of Hydropower Generation System in Reducing Wind Power Fluctuation

Water ◽  
2021 ◽  
Vol 13 (21) ◽  
pp. 2987
Author(s):  
Beibei Xu ◽  
Jingjing Zhang ◽  
Shuai Yuan ◽  
Huanhuan Li ◽  
Diyi Chen ◽  
...  
Keyword(s):  
Power Consumption ◽  
Energy Conservation ◽  
Power System ◽  
Wind Power ◽  
Guide Vane ◽  
Peak Load ◽  
Maintenance Cost ◽  
Generation System ◽  
Hydropower Generation ◽  
Power Fluctuation

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.

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