Solar Brayton-Cycle Power-System Development   Presented as Preprint 64-726 at the Third Biennial Aerospace Power Systems Conference, Philadelphia, Pa., September 1-4, 1964.

1966 ◽  
pp. 759-793
Author(s):  
A. Pietsch
Keyword(s):  
Power Systems ◽  
Power System ◽  
System Development ◽  
Brayton Cycle ◽  
The Third

Integral Models of Developing Electric Power Systems

2013 ◽  
Vol 2 (4) ◽  
pp. 44-58 ◽  
Author(s):  
E. V. Markova ◽  
I. V. Sidler ◽  
V. V. Trufanov
Keyword(s):  
Power Systems ◽  
Power System ◽  
Electric Power ◽  
System Development ◽  
Electric Power Industry ◽  
Electric Power System ◽  
Integral Model ◽  
Volterra Equations ◽  
Prony Method ◽  
Optimal Service

The first part of the paper is devoted to the problem of optimal control in the area of electric power industry which is described on the basis of a one-sector variant of Glushkov integral model of developing systems. The authors consider the ways uncertain conditions of future electric power system development influence the optimal service life. The results of calculations for the Unified Electric Power System of Russia are presented and analyzed. The second part of the paper deals with the application of Prony method to identification of the Volterra equations in the two-sector models of developing systems. The authors suggest a numerical method for identifying the efficiency function parameters. An illustrative example is given.

scholarly journals Exploring Wind and Solar PV Generation Complementarity to Meet Electricity Demand

Energies ◽  
2020 ◽  
Vol 13 (16) ◽  
pp. 4132 ◽  
Author(s):  
António Couto ◽  
Ana Estanqueiro
Keyword(s):  
Power Systems ◽  
Power System ◽  
Solar Power ◽  
Extreme Values ◽  
System Development ◽  
Power Source ◽  
Electricity Demand ◽  
Energy Deficit ◽  
Solar Pv ◽  
Renewable Power

Understanding the spatiotemporal complementarity of wind and solar power generation and their combined capability to meet the demand of electricity is a crucial step towards increasing their share in power systems without neglecting neither the security of supply nor the overall cost efficiency of the power system operation. This work proposes a methodology to exploit the complementarity of the wind and solar primary resources and electricity demand in planning the expansion of electric power systems. Scenarios that exploit the strategic combined deployment of wind and solar power against scenarios based only on the development of an individual renewable power source are compared and analysed. For each scenario of the power system development, the characterization of the additional power capacity, typical daily profile, extreme values, and energy deficit are assessed. The method is applied to a Portuguese case study and results show that coupled scenarios based on the strategic combined development of wind and solar generation provide a more sustainable way to increase the share of variable renewables into the power system (up to 68% for an annual energy exceedance of 10% for the renewable generation) when compared to scenarios based on an individual renewable power source. Combined development also enables to reduce the overall variability and extreme values of a power system net load.

Status of Pressurized SOFC/Gas Turbine Power System Development at Siemens Westinghouse

2002 ◽  
Author(s):  
Stephen E. Veyo ◽  
Shailesh D. Vora ◽  
Kavin P. Litzinger ◽  
Wayne L. Lundberg
Keyword(s):  
Fuel Cell ◽  
Power Systems ◽  
Power System ◽  
Gas Turbine ◽  
High Efficiency ◽  
System Development ◽  
Hot Water ◽  
Positive System ◽  
The Status ◽  
And Performance

Pressurized solid oxide fuel cell (PSOFC)/micro gas turbine generator (MTG) hybrid power systems have the potential to generate electric power at high efficiency [circa 60% (net AC/LHV)] at multi-hundred kWe and multi-MWe capacities. Thus, good fuel economy and low CO2 emissions are positive system attributes, as are low NOx and SOx emissions due to the propensity of the SOFC for low NOx generation, the need for no firing of the gas turbine combustor during normal hybrid system power operations, and the use of desulfurized fuel. Exhaust temperatures are sufficiently high to enable the recovery of heat for steam/hot-water production, and system energy efficiencies of at least 80% are feasible. Work is ongoing at Siemens Westinghouse on three PSOFC/MTG power systems. Two, with 220 kWe and 300 kWe capacities, are proof-of-concept demonstration units. The 220 kWe PSOFC/MTG power system is in test at the National Fuel Cell Research Center, University of California-Irvine, and the 300 kWe system, which is currently being designed, will be demonstrated in two tests to be performed in Europe. The status of work on the 220 kWe and 300 kWe power systems is reviewed. The third system is to have capacity of at least 500 kWe. This system, which will be demonstrated also, is viewed as a prototype commercial product. The 500 kWe-class PSOFC/MTG concept is described and performance estimates are presented.

Radioisotope Power-Generating System for a Manned Space Laboratory

1966 ◽  
Vol 88 (2) ◽  
pp. 129-141 ◽  
Author(s):  
A. Duane Tonelli ◽  
Edward P. Regnier
Keyword(s):  
Power Systems ◽  
Power System ◽  
Electrical Power ◽  
Rankine Cycle ◽  
Space Vehicles ◽  
Brayton Cycle ◽  
Space Applications ◽  
Cycle System ◽  
Study Results ◽  
Secondary Power

The results of a Douglas sponsored study of radioisotope secondary power-generating systems for space applications are presented. The study results are applicable to various space vehicles and missions requiring 4 kw or more of electrical power. The first generation of manned vehicles where a radioisotope power system is potentially applicable include the Extended Apollo and MOL type earth-orbiting laboratories. For this reason, the study results were applied to selecting a radioisotope power system for a small manned orbiting laboratory. The laboratory considered is capable of being launched in the post-1968 time period by a Titan 3C booster. An argon Brayton cycle, Dowtherm A Rankine cycle, and thermoelectric systems were investigated as possible secondary power systems capable of generating 4 kw of electrical power for the vehicle subsystem. Tradeoffs in weight, radiator-area requirement, development risk and isotope availability and cost were performed for the various systems. On the basis of the tradeoffs and the 4-kw design load, the argon Brayton cycle system was recommended.

Performance Evaluation of Space Solar Brayton Cycle Power Systems

1992 ◽  
Author(s):  
Zheng-Gang Diao
Keyword(s):  
Life Cycle ◽  
Power Systems ◽  
Power System ◽  
Life Cycle Cost ◽  
Pressure Ratio ◽  
Inlet Temperature ◽  
Brayton Cycle ◽  
Compressor Inlet ◽  
Cycle Efficiency ◽  
System Characteristics

Unlike gas turbine power systems which consume chemical or nuclear energy, the energy consumption and/or cycle efficiency should not be a suitable criterion for evaluating the performance of space solar Brayton cycle power. A new design goal, life cycle cost, can combine all the power system characteristics, such as mass, area, and station-keeping propellant, into a unified criterion. Effects of pressure ratio, recuperator effectiveness, and compressor inlet temperature on life cycle cost were examined. This method would aid in making design choices for a space power system.

Sign in / Sign up

Export Citation Format

Share Document