scholarly journals Development of a simulation model of HPPs chain operation

2020 ◽  
Vol 191 ◽  
pp. 02004
Author(s):  
Alexandra Khalyasmaa ◽  
Stanislav Eroshenko ◽  
Sergey Mitrofanov ◽  
Anastasia Rusina ◽  
Anna Arestova ◽  
...  
Keyword(s):  
Power Systems ◽  
Simulation Model ◽  
Power Plants ◽  
River Flow ◽  
Water Pressure ◽  
Operation Mode ◽  
Flow Characteristics ◽  
Time Lags ◽  
Hydroelectric Power ◽  
Hydro Power

The paper presents a simulation model of a hydroelectric power plants chain. The model allows solving the problem of hydro power plants (HPPs) operation mode planning in a unified power system, taking into account the optimization of water resources. The optimal filling and decrease of storage was performed in MATLAB Simulink software. The hydraulic properties of the river flow between the stations and the corresponding time lags in the functioning of the down-river station are taken into account. The model allows continuously monitoring changes in water pressure at hydropower plants and, as a result, uses the family of flow characteristics for various water pressures. The issues of optimizing the participation of hydroelectric power stations in the regimes of large hydrothermal power systems were also raised.

scholarly journals Integrating GIS technologies in hydro power plant cascade simulation model

2020 ◽  
Vol 191 ◽  
pp. 02006
Author(s):  
Alexandra Khalyasmaa ◽  
Stanislav Eroshenko ◽  
Anna Arestova ◽  
Sergey Mitrofanov ◽  
Anastasiya Rusina ◽  
...  
Keyword(s):  
Power Plant ◽  
Simulation Model ◽  
Power Plants ◽  
Block Diagram ◽  
Monitoring Data ◽  
Hydroelectric Power ◽  
Calculation Algorithm ◽  
Hydro Power ◽  
Gis Technologies ◽  
Hydroelectric Power Plants

The paper presents the calculation algorithm for water-energy regime of a hydroelectric power plants cascade. The block diagram of the algorithm is given for implementing the simulation model and automating the process of calculating the regime. The proposed algorithm allows to evaluate the efficiency of the cascade, as well as to optimize the regime according to various criteria. Additionally, an option is proposed for integrating GIS monitoring data into the calculation algorithm.

Application of Intelligent Technological Systems in Order to Increase Efficiency of the Lock Chamber System in Hydro Power Plants

2015 ◽  
Vol 806 ◽  
pp. 64-73
Author(s):  
Aleksandar Vujović ◽  
Zdravko Krivokapić ◽  
Jelena Jovanović
Keyword(s):  
Power Plants ◽  
Hydroelectric Power Plant ◽  
Global Market ◽  
Real System ◽  
Hydroelectric Power ◽  
Initial State ◽  
Hydro Power ◽  
Lock Chamber ◽  
Levels Of Automation ◽  
Hydro Power Plants

The paper is a result of research at the Mechanical Engineering Faculty in Podgorica and represents the aspiration of authors to combine scientific and technical experience in order to achieve improvement in a real system. It is a complex system of lock chambers in a hydroelectric power plant. Based on a detailed analysis of the initial state, through the process modeling of complex real system, the authors identify possible areas where the intervening and applying modern systems with greater flexibility is necessary to achieve higher levels of automation. Also, proposed in the paper are measures for ensuring the security of information that rise system performance to a higher level compared to the competition and create an advantage in the global market.

scholarly journals Dimensioning Studies for Reversible Hydro Power Plants in Portuguese Islands

2018 ◽  
Vol 4 (1) ◽  
pp. 77-86
Author(s):  
Nuno Fonseca ◽  
André Madureira ◽  
João Peças Lopes ◽  
Manuel Matos
Keyword(s):  
Power Plant ◽  
Power Systems ◽  
Power Plants ◽  
Hydro Power ◽  
Power Resources ◽  
Hydro Power Plants ◽  
Pumped Storage ◽  
Energetic Level ◽  
Energy Surplus ◽  
The Ideal

This work is within the scope of set of consultancy studies made for Portuguese islands. It focuses on the integration of Pumped Storage Power in isolated islands. The paper starts to address several power systems circumstances about two Portuguese islands on the energetic level. For each of these islands, an independent examination of the conditions to install a reversible hydro power plant is accomplished. Therefore, the energy volume to be stored due to excess of renewable generation and the ideal power and number of the pumps and turbines to be installed were identified and evaluated for the sake of using the produced energy surplus as to be pumped and later generated. The paper enhances the importance of storing energy in the operation of isolated and small systems with considerable amount of intermittent power resources as well as the conditions for the viability of installing new exploitations of this kind.

scholarly journals Optimization of Short-term Modes of Hydrothermal Power System

2020 ◽  
Vol 209 ◽  
pp. 07014
Author(s):  
Tulkin Gayibov ◽  
Bekzod Pulatov
Keyword(s):  
Power Systems ◽  
Power System ◽  
Power Plants ◽  
Optimal Planning ◽  
Hydroelectric Power ◽  
Short Term ◽  
Planning Period ◽  
Time Intervals ◽  
Large Power ◽  
Integral Constraints

Optimal planning of short-term modes of power systems is a complex nonlinear programming problem with many simple, functional and integral constraints in the form of equalities and inequalities. Especially, the presence of integral constraints causes significant difficulties in solving of such problem. Since, under such constraints, the modes of power system in separate time intervals of the considered planning period become dependent on the values of the parameters in other intervals. Accordingly, it becomes impossible to obtain the optimal mode plan as the results of separate optimization for individual time intervals of the period under consideration. And the simultaneous solution of the problem for all time intervals of the planning period in the conditions of large power systems is associated with additional difficulties in ensuring the reliability of convergence of the iterative computational process. In this regard, the issues of improving the methods and algorithms for optimization of short-term modes of power systems containing thermal and large hydroelectric power plants with reservoirs, in which water consumption is regulated in the short-term planning period, remains as an important task. In this paper, we propose the effective algorithm for solving the problem under consideration, which makes it possible to quickly and reliably determine the optimal operating modes of the power system for the planned period. The results of research of effectiveness of this algorithm are presented on the example of optimal planning of daily mode of the power system, which contains two thermal and three hydraulic power plants..

The Operating Condition Estimation of the Equipment in Decision-Making Process in the Hydro Power Plant Control

2014 ◽  
Vol 698 ◽  
pp. 785-789
Author(s):  
Yana Panova ◽  
Vladimir Derbenev ◽  
Anastasiya Zhdanovich
Keyword(s):  
Power Plant ◽  
Power Plants ◽  
Hydroelectric Power ◽  
Operational Control ◽  
Hydro Power ◽  
Operating Condition ◽  
Power Plant Control ◽  
Low Head ◽  
High Head ◽  
Sets Theory

This article is devoted to the principles of constructing the decision support information system at the hydroelectric power plants. It’s assumed that the fuzzy sets theory will be used for the representation of the information about the aggregates operating condition parameters. The paper reflects the advantages of such an approach. The calculations were done for the equipment of the low-head (Novosibirskaya HPP, Hydro Power Plant) and high-head (Sayano–Shushenskaya HPP) power plants. The results obtained are intended for solving the HPPs operational control problems.

Stability of autonomous power systems with reversible hydro power plants

2018 ◽  
Vol 158 ◽  
pp. 1-14 ◽  
Author(s):  
P. Beires ◽  
M.H. Vasconcelos ◽  
C.L. Moreira ◽  
J.A. Peças Lopes
Keyword(s):  
Power Systems ◽  
Power Plants ◽  
Hydro Power ◽  
Autonomous Power Systems ◽  
Hydro Power Plants

scholarly journals Design Guideline for Hydropower Plants Using One or Multiple Archimedes Screws

Processes ◽  
2021 ◽  
Vol 9 (12) ◽  
pp. 2128
Author(s):  
Arash YoosefDoost ◽  
William David Lubitz
Keyword(s):  
Power Plants ◽  
River Flow ◽  
Flow Characteristics ◽  
Simple Method ◽  
Design Guideline ◽  
Hydropower Plants ◽  
Important Concern ◽  
Wide Range ◽  
Standard Designs ◽  
Maintenance Requirements

The Archimedes/Archimedean screw generator (ASG) is a fish-friendly hydropower technology that could operate under a wide range of flow heads and flow rates and generate power from almost any flow, even wastewater. The simplicity and low maintenance requirements and costs make ASGs suitable even for remote or developing areas. However, there are no general and easy-to-use guidelines for designing Archimedes screw power plants. Therefore, this study addresses this important concern by offering a simple method for quick rough estimations of the number and geometry of Archimedes screws in considering the installation site properties, river flow characteristics, and technical considerations. Moreover, it updates the newest analytical method of designing ASGs by introducing an easier graphical approach that not only covers standard designs but also simplifies custom designs. Besides, a list of currently installed and operating industrial multi-Archimedes screw hydropower plants are provided to review and explore the common design properties between different manufacturers. On top of that, this study helps to improve one of the biggest burdens of small projects, the unscalable initial investigation costs, by enabling everyone to evaluate the possibilities of a green and renewable Archimedes screw hydropower generation where a flow is available.

scholarly journals Hydro-reservoir management and unit-commitment in energy optimization

2021 ◽  
Author(s):  
Flávio Leite Loução Junior ◽  
Marlon Sproesser Mathias ◽  
Claudia Sagastizábal ◽  
Luiz-Rafael Santos ◽  
Francisco Nogueira Calmon Sobral
Keyword(s):  
Power Systems ◽  
Demand Response ◽  
Power Plants ◽  
Unit Commitment ◽  
Thermal Power ◽  
Point Of View ◽  
Mixed Integer ◽  
Thermal Power Plants ◽  
Hydro Power ◽  
Optimal Dispatch

In partnership with CCEE, CEPEL and RADIX as industrial partners, in 2021 the study group focused on the dynamics of hourly prices when industrial consumers are demand responsive, as a follow-up of the industrial problem tackled in 2018 and 2019, on ``Day-ahead pricing mechanisms for hydro-thermal power systems''. Demand response is currently being tested by the Brazilian independent system operator and by the trading chamber, ONS. The program considers reductions of consumption of some clients as an alternative to dispatching thermal power plants out of the merit order. The day-ahead problem of finding optimal dispatch and prices for the Brazilian system is modelled as a mixed-integer linear programming problem, with non-convexities related to fixed costs and minimal generation requirements for some thermal power plants. The work focuses on the point of view of an individual hydro-power generator, to determine business opportunities related to adhering to a demand response program.

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