A novel algorithm and software tool for energy balance correctness at power plants, PV farms, and prosumers

2014 ◽  
Author(s):  
N. Calamero ◽  
E. Koyfman ◽  
V. Elkonin ◽  
Y. Beck ◽  
D. Shmilovich
Keyword(s):  
Energy Balance ◽  
Power Plants ◽  
Software Tool ◽  
Novel Algorithm

Annual Yield Analysis of Solar Tower Power Plants With GREENIUS

2011 ◽  
Vol 133 (3) ◽  
Author(s):  
Jürgen Dersch ◽  
Peter Schwarzbözl ◽  
Timo Richert
Keyword(s):  
Renewable Energy ◽  
Power Plants ◽  
Software Tool ◽  
Parabolic Trough ◽  
Concentrating Solar Power ◽  
Solar Field ◽  
Performance Calculation ◽  
Design Power ◽  
Energy Plants ◽  
Renewable Energy Plants

An existing software tool for annual performance calculation of concentrating solar power and other renewable energy plants has been extended to enable the simulation of solar tower power plants. The methodology used is shown and a demonstrative example of a 50 MWe tower plant in southern Spain is given. The influence of design power and latitude on solar field layout is discussed. Furthermore, a comparison of the tower plant with a 50 MWe parabolic trough and a Linear Fresnel plant at the same site is given.

Study on Dynamic Strength Evaluation Method of Mechanical Members Based on Energy Balance

2007 ◽  
Author(s):  
Keisuke Minagawa ◽  
Satoshi Fujita ◽  
Seiji Kitamura ◽  
Shigeki Okamura
Keyword(s):  
Energy Balance ◽  
Experimental Model ◽  
Ultimate Strength ◽  
Nuclear Power ◽  
Power Plants ◽  
Nuclear Power Plants ◽  
Dynamic Strength ◽  
Input Energy ◽  
Seismic Safety ◽  
Strength Evaluation

This paper describes the dynamic strength evaluation of piping installed in nuclear power plants from a viewpoint of energy balance. Mechanical structures installed in nuclear power plants such as piping and equipment are usually designed statically in elastic region. Although these mechanical structures have sufficient seismic safety margin, comprehending the ultimate strength is very important in order to improve the seismic safety reliability in unexpected severe earthquakes. In this study, ultimate strength of a simple single-degree-of-freedom model is investigated from a viewpoint of energy balance equation that is one of valid methods for structural calculation. The investigation is implemented by forced vibration experiment. In the experiment, colored random wave having predominant frequency that is similar to natural frequency of the experimental model is input. Stainless steel and carbon steel are selected as material of experimental model. Excitation is continued until the experimental model is damaged, and is carried out with various input levels. As a result of the experiment, it is confirmed that input energy for failure increase with an increase of time for failure. Additionally it is confirmed that input energy for failure depend on the material.

scholarly journals Prospects of diversification and ensuring energy safety of Uzbekistan

2019 ◽  
Vol 139 ◽  
pp. 01002 ◽  
Author(s):  
Kahraman Allaev ◽  
Tokhir Makhmudov
Keyword(s):  
Renewable Energy ◽  
Energy Balance ◽  
Power Plant ◽  
Nuclear Power Plant ◽  
Energy Security ◽  
Nuclear Power ◽  
Power Plants ◽  
Current State ◽  
The Republic

The data on the current state of energy in Uzbekistan are given. The need to diversify the structure of the energy balance of the republic is shown, which ensures the energy security of the state in the medium and long term. It is argued that the construction of a nuclear power plant in Uzbekistan is not only expedient, but also necessary. In the future, renewable energy and nuclear power plants will become the basis of energy in Uzbekistan.

The Palo Verde Water Cycle Model (PVWCM) – Development of an Integrated Multi-Physics and Economics Model for Effective Water Management

2021 ◽  
Author(s):  
Bobby D. Middleton ◽  
Patrick V. Brady ◽  
Jeffrey A. Brown ◽  
Serafina T. Lawles
Keyword(s):  
Water Management ◽  
Water Resources ◽  
Sonoran Desert ◽  
Power Plants ◽  
Water Cycle ◽  
Cooling Water ◽  
Software Tool ◽  
Cycle Model ◽  
The Us ◽  
Water Strategy

Abstract Water management has become critical for thermoelectric power generation in the US. Increasing demand for scarce water resources for domestic, agricultural, and industrial use affects water availability for power plants. In particular, the population in the Southwestern part of the US is growing and water resources are over-stressed. The engineering and management teams at the Palo Verde Generating Station (PV) in the Sonoran Desert have long understood this problem and began a partnership with Sandia National Laboratories in 2017 to develop a long-term water strategy for PV. As part of this program, Sandia and Palo Verde staff have developed a comprehensive software tool that models all aspects of the PV (plant cooling) water cycle. The software tool — the Palo Verde Water Cycle Model (PVWCM) — tracks water operations from influent to the plant through evaporation in one of the nine cooling towers or one of the eight evaporation ponds. The PVWCM has been developed using a process called System Dynamics. The PVWCM is developed to allow scenario comparison for various plant operating strategies.

scholarly journals METHOD OF ANALYSIS OF ENERGY POTENTIAL OF THERMAL ENERGY SOURCE FOR HEAT SUPPLY

2019 ◽  
Vol 4 (10) ◽  
pp. 74-83
Author(s):  
В. Буланин ◽  
V. Bulanin
Keyword(s):  
Energy Balance ◽  
Power Plant ◽  
Thermal Energy ◽  
Thermal Power Plant ◽  
Heat Supply ◽  
Power Plants ◽  
Fuel Efficiency ◽  
Thermal Power ◽  
Energy Potential ◽  
The Impact

The main sources of thermal energy for the heat supply of cities and settlements are fuel-based thermal power plants and boilers. The article provides an analysis of the energy balance of a power plant in connection with the need to minimize the cost of fuel and electricity for heat supply. New analytical expressions comprehensively characterizing the efficiency of a power plant are developed. The analytical assessment of the impact of energy costs for the boiler needs on the energy balance of thermal power plant is made; methods for constructing schemes of the energy balance of thermal power plant and assessment of fuel efficiency in the boiler are designed. Attention is paid to errors arising from the use of the calculated values of air suction in the gas path of the boiler, and not the actual ones. Therefore, it is proposed to change the method of measuring heat loss with flue gases in order to eliminate or reduce the effect of air suction on the measurement results, taking into account the part of the flue gas heat received by the air in the air heater and returned to the boiler through the burner. The methods increasing accuracy of calculations of energy efficiency of the technological processes which are key in the centralized heat supply of the cities and settlements are developed.

Performance Modeling of a Modern Gas Turbine for Dispatch Optimization

2012 ◽  
Author(s):  
S. Z. Boksteen ◽  
D. J. van der Vecht ◽  
R. Pecnik ◽  
J. P. van Buijtenen
Keyword(s):  
Gas Turbine ◽  
Power Plants ◽  
Performance Modeling ◽  
Software Tool ◽  
Field Measurements ◽  
Combined Cycle ◽  
Plant Performance ◽  
Base Case ◽  
Combustion Gas ◽  
Modeling Strategy

As electricity demand from individual power plants is expected to fluctuate increasingly due to the growing share of renewables, operators of large Combined Cycle Gas Turbine power plants will have to deal with increasing load variations and rapid load changes. To keep up reliability and availability of the plants, it is useful to accurately keep track of plant performance by comparing actual cycle data with a steady state base case model. This paper presents various aspects of the performance modeling of Alstom’s GT26 gas turbine as recently installed in the Netherlands. The modeling environment is GSP, a component based zero-dimensional software tool. Firstly, the modeling strategy is presented, taking into account the specific features of this sequential combustion gas turbine. Secondly, the method of processing field measurements to model inputs is shown and furthermore, the influence of measurement uncertainty on model parameter estimation is assessed. Procedures will be proposed to use this model in daily operation, to keep track of actual component loading. Later on, the recorded performance data can be used to evaluate maintenance as a function of actual operational history, as a basis for future strategies.

Procedures Software Tool Requirements Analysis

1993 ◽  
Vol 37 (16) ◽  
pp. 1096-1100
Author(s):  
Marvin C. McCallum ◽  
Jennifer Morgan ◽  
Joseph Y. Yasutake ◽  
Hachiro Isoda
Keyword(s):  
Nuclear Power ◽  
Power Plants ◽  
Nuclear Power Plants ◽  
Development Process ◽  
Software Tool ◽  
Requirements Analysis ◽  
Nuclear Industry ◽  
Functional Requirements ◽  
Potential Applications ◽  
Procedure Development

This paper describes a recently completed project conducted to identify functional requirements and software features of a Procedure Software Tool (PST) to be used as an aid in the preparation of written maintenance procedures in nuclear power plants. Results discussed include an overview of functional requirements and software features that address problems in procedure use and the process of procedure development. An overview of the recommended PST development process is also provided, along with a summary of the estimated benefits of PST development. Finally, potential applications in the nuclear industry, as well as other industries, are discussed.

scholarly journals Development of an intelligent system for integrated management of hydroelectric cascade modes

2019 ◽  
Vol 124 ◽  
pp. 05019 ◽  
Author(s):  
A.G. Rusina ◽  
Dzh Kh Khudzhasaidov ◽  
O.V. Naumov ◽  
A.N. Gorlov
Keyword(s):  
Power System ◽  
Power Plants ◽  
Intelligent System ◽  
Integrated Management ◽  
Hydroelectric Station ◽  
Software Tool ◽  
Electric Power System ◽  
Hydroelectric Power ◽  
Operating Modes ◽  
Hydroelectric Power Plants

The paper deals with an isolated electric power system (EPS) based on hydroelectric power plants. The analysis of the existing methods and approaches for investigation of modes of EPS which comprise hydroelectric power plants is presented. A mathematical model of a hydroelectric station cascade has been developed, which allows taking into account the hydraulic connection during calculation of electrical modes. A software tool for optimization the operating modes of hydroelectric power plants as part of the power system was developed. It uses redistribution the load between hydraulic units both inside the station and between hydroelectric complexes of cascade hydroelectric stations. The task of modeling power consumption and load graphs of EPS with specific properties, based on the application of artificial intelligence methods, is considered.

scholarly journals Application of an absorption heat pump in the conditions of an existing combined heat and power plant

2020 ◽  
Vol 34 ◽  
pp. 57-62
Author(s):  
A. Redko ◽  
I. Redko ◽  
S. Pavlovskiy ◽  
Y. Burda ◽  
Y. Pivnenko ◽  
...  
Keyword(s):  
Energy Balance ◽  
Thermal Energy ◽  
Power Plants ◽  
Renewable Energy Sources ◽  
Combined Heat And Power ◽  
Energy Resources ◽  
Secondary Energy ◽  
Condense Water ◽  
Secondary Energy Resources ◽  
Heating Networks

The dependence of mankind on energy resources only increases with the development of scientific and technological progress. It is clear that the supply of natural energy resources will run out soon. The solution is using new energy generation technologies based on renewable and secondary sources. Due to the presence in Ukraine of operating combined heat and power plants, there is the possibility of producing thermal energy using the secondary heat by absorption heat pumps. At the same time, the thermal energy of flue gases and steam from steam turbines does not heat the atmosphere, but are involved in the generation of thermal energy for heating networks of settlements. Due to the ability of the absorbent solution to absorb and condense water vapor under the influence of low-potential and high-potential heat carriers, it is possible to significantly reduce the consumption of traditional energy resources and increase the overall efficiency of the combined heat and power plants. World experience shows that the use of secondary energy resources can significantly improve the country's energy balance. And the main problem is the availability of these resources. In today's changing climate, the use of renewable energy sources requires additional expences and it is appropriate to pay attention to use of present secondary energy resources, which are not used now. There are a lot of such resources available in heat generating facilities. This is especially noticeable in large cities with central heating networks. Therefore, increasing the efficiency of their work makes it possible to significantly improve the energy balance of the whole country and reduce tariffs for thermal energy for industry and individual consumers, which, in turn, will improve the living standards of citizens.

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