OTEC Power System Modeling, Analysis and Design via Geometric Programming

1980 ◽  
Vol 102 (3) ◽  
pp. 154-159 ◽  
Author(s):  
A. Lavi
Keyword(s):  
Nonlinear Programming ◽  
Power System ◽  
Geometric Programming ◽  
Power Plants ◽  
System Analysis ◽  
System Modeling ◽  
Analytical Treatment ◽  
Transfer Energy ◽  
Analysis And Design ◽  
Operating Variables

A complex power system may be modeled by a system of inequalities representing the constraints imposed by the physical laws: heat transfer, energy balance, cycle efficiency and so forth. The nature of the resulting mathematical model is such that the terms contain complex expressions involving the design and operating variables of the process. With the addition of an objective function involving the cost of major system components, a multivariable nonlinear programming problem can be formulated. Seldom does the model lend itself to analytical treatment. This paper is concerned with a specific formulation and solution of nonlinear programming problems which arise in the design of ocean thermal energy conversion (OTEC) power plants. The technique used is geometric programming, GP. It is shown that GP serves as an excellent tool for system analysis because it provides sensitivity information essential to the designer.

The Analysis and Design of Hospital Information System Based on UML Model

2010 ◽  
Vol 121-122 ◽  
pp. 441-446
Author(s):  
Qing Zhang Chen ◽  
Jie Chen ◽  
Yong Ming Yu
Keyword(s):  
Information System ◽  
Hospital Information System ◽  
Large Scale ◽  
System Analysis ◽  
System Modeling ◽  
Main Idea ◽  
Analysis And Design ◽  
Application Systems ◽  
Analysis System ◽  
Core Idea

In this paper, we used UML method to complete the whole hospital information system analysis and design. It is described the system and determine the requirement of system’s function. It also completes the system’s architecture design and detailed design and implement to the system. The main idea of thesis is as follows: 1）It adopt UML to object-oriented the modeling hospital information system, and will be a good way to solve a few questions from hospital information system in nowadays. 2）It moves around the main ideas of RUP (use-case driven, architecture-centric, iterative and incremental). At the beginning of get demand, through the system analysis, system design, until to the final of the system implementation. It adopts the stepwise deduction to go deep into the way of refining organization to anatomize the whole the process of the hospital information system. Through the success of the hospital information system modeling to prove that the core idea of the UML-based on RUP modeling techniques is practical in the development of large-scale of application systems. At the same time, it also prepared to provide a better reference and instance for the project or team to adopt this technology.

scholarly journals System analysis and Design of Tutorial for Teaching Industrial Automatism

2020 ◽  
Vol 14 ◽  
Keyword(s):  
Distance Learning ◽  
System Analysis ◽  
System Modeling ◽  
Methodological Approach ◽  
Modeling Method ◽  
System Analysis And Design ◽  
Analysis And Design ◽  
University Degree ◽  
Teaching Modules

After presenting of the need for using automates in industry, we present an application of system analysis for the design of a tutorial for teaching industrial automatism. The experience is situated in training students in view to get a university degree in engineering. The essential of this methodological approach is to specify the composition of the various teaching modules in industrial automatism to be accessible to the students by a system modeling method and to develop a digital support that can be exploited in distance learning.

Power System Analysis and Design of the Six-Cylinder Hydraulic Confined Piston Engine

2013 ◽  
Vol 765-767 ◽  
pp. 57-61 ◽  
Author(s):  
Lian Jun Cheng ◽  
Ji Peng Zhang ◽  
Wei Huo ◽  
Tie Zhu Zhang
Keyword(s):  
Power System ◽  
System Analysis ◽  
Combustion Engine ◽  
Connecting Rod ◽  
Piston Engine ◽  
System Analysis And Design ◽  
Analysis And Design ◽  
Power System Analysis ◽  
Theoretical Support ◽  
New Type

Hydraulic Confined Piston Engine (HCPE) is a new type of internal combustion engine which can directly convert thermal energy into hydraulic energy. Power system of the six-cylinder HCPE is studied in this paper. The power system model is built; the power system analysis and design are carried through. The new type of crank connecting rod mechanism is proposed in the six-cylinder HCPE. Fitting-curves of movement, force, and torque for the key parts are drawn to provide theoretical support for the prototype of the six-cylinder HCPE.

Power Systems Analysis Toolbox: Planning and Contingency

2012 ◽  
Vol 433-440 ◽  
pp. 3884-3889
Author(s):  
Mohamad R. Khaldi
Keyword(s):  
Power Systems ◽  
Power System ◽  
Transmission Lines ◽  
Systems Analysis ◽  
Power Plants ◽  
System Analysis ◽  
Power System Analysis ◽  
Control Devices ◽  
And Control ◽  
Power Systems Operation

Outages and planning primarily account for the removal and addition of new buses, generating power plants, transmission lines, loads, and control devices, respectively. They occur regularly in power systems operation and restoration, and hence a power system is constantly changing its topology. Therefore, there is a need for a software package to emulate these changes. Power System Analysis Toolbox (PSAT) is designed and developed in Matlab environment to simulate contingencies and expansion of power systems. The IEEE 14-bus power system is used to illustrate the effectiveness of the proposed work.

scholarly journals A Generalized Unit Commitment and Economic Dispatch Approach for Analysing the Polish Power System under High Renewable Penetration

Energies ◽  
2020 ◽  
Vol 13 (8) ◽  
pp. 1952
Author(s):  
Marcin Pluta ◽  
Artur Wyrwa ◽  
Wojciech Suwała ◽  
Janusz Zyśk ◽  
Maciej Raczyński ◽  
...  
Keyword(s):  
Power System ◽  
Energy Policy ◽  
Power Plants ◽  
System Analysis ◽  
Unit Commitment ◽  
Renewable Energy Sources ◽  
Economic Dispatch ◽  
System Stability ◽  
Mixed Integer ◽  
The Impact

The achievement of carbon neutrality requires a deep transformation of the Polish power sector. This paper analyses the impact of increased electricity generation from wind and solar technologies envisaged in the newest version of the Energy Policy of Poland until 2040 on the operation of dispatchable generators in 2030. The analysis was carried out using the Model of Economic Dispatch and Unit commitment for System Analysis (MEDUSA) model, which solves a mixed integer problem related to unit commitment and economic dispatch in electrical power production. At first, the model was validated based on the real operation data from 2018. Next, five scenarios were built to analyse the operation of the system in 2030. The overall result of the study is that the safest solution from the point of view of power system stability is to extend the decommissioning of coal units of 200 and 300 MW classes, to invest in renewable energy sources (RES) according to the energy policy, to build new gas power plants with the total capacity of ca. 4 GW, and to enforce Demand Side Management (DSM) programs for shifting the electrical load. The proposed framework for the optimization of power system planning helps to avoid wrong investment decisions that would have a negative impact on energy prices.

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