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Computer Programming For Power Systems Analysts.

Fri, 30 Dec 2011 10:12:10 -0800

Introduction:
"Computer programming for power systems analysts" treats the subject of the electrical power systems distribution and analysis from a problem solving point of view.
Chapter 1 offers an introduction to computer programming using two languages. The two languages are: Basic and C++. The main statements in each language that are required to build the programs that will solve the power systems problems were given, also, in this chapter.
Chapter 2 presents an overview of the electrical power system including the equipment used and is divided into generation and transmission, subtransmission and distribution and utilization. The emphasis was put on the subtransmission and distribution levels of the power distribution system. The other topics that were included in this chapter can fall under base values calculations and basic operations to be performed on the mathematical models representing the power systems components and problems. The chapter is divided into two sections, the first covering the topics from the power angle and the second from the programming view point which gives a few complete example programs to solve certain problems and achieve specific results.
Chapter 3 is divided into two sections, also. One for the coverage of the faults in power systems topic from the power side as well as the other from the programming angle in which a few examples were given to calculate the fault currents and the voltage sensitivity of the healthy (unfaulty) buses for certain fault types.
Chapter 4, following the same format as the previous chapter but covering the load flow topics was presented in two sections, also. One section covering the methods of solving these studies, the modelling of typical systems and finally the equations used in the calculations were given. The second section gave the example programs for the specific systems.
Chapter 5 covered the transients in power systems, the modelling of the different equipment, the methods used to analyze for transients, their causes. The first section covered the topics from the power angle and the second listed a few problems that calculates the overvoltages imposed on the systems under certain operating or design conditions.
Chapter 6 covered the topic of reliability in industrial plants and utility distribution. The same format used in chapter 2 was used also here. The first section covered the modelling and the methods used to quantify the reliability of the system. The second section presented a couple of programs that may assist in analyzing the reliability of the different industrial designs as well as the utility feeders.
Chapter 7 covered, using the usual format, the stability topic including the types of stability studies, the types of disturbances that may cause the system to go out of synchronizm, the equations used, the type of stability problems.
Chapter 8 covered the topic of "electrical power distribution management information systems" which included the major equipment of a power system with the necessary data for each equipment (category) type to build such a data base.
Chapter 9 covered the engineering economics analysis methods and tools that are required in order to enable the power system analyst to evaluate economically the operation of the different equipment and systems that build a power distribution plant.

How-to use off-the-shelf software packages to perform power systems analysis

Fri, 30 Dec 2011 10:12:10 -0800

Introduction:
Spread sheets fundamentals, basic operation and fundamental calculations of power systems analysis, fault calculations, load flow studies, using Quickbasis to perform power systems studies and using HTML and Javascript to perform power systems studies.

Graphics programs

Thu, 29 Dec 2011 10:12:10 -0800

An introduction to the available graphics programs, 2D and 3D plus animation.

Programming languages

Thu, 29 Dec 2011 10:12:10 -0800

Introduction: The programming languages that have compilers operating under Linux OS (we shall be concerned here with openSuse and/or simplyMEPIS VERSION 6.5 or 7.0) and will be coverd here in this section are: C++, fortran77, gfortran, pascal (free pascal), SmallEiffel, ADA, Haskell, Ocaml and Java.

Script languages

Thu, 29 Dec 2011 10:12:10 -0800

Introduction:
The script languages that have interpreters operating under Linux OS (we shall be concerned here with simplyMEPIS VERSION 6.5) and will be coverd, here, in this section are: perl, python, tcl, tk, ruby, rexx (regina) and haskell. In order to prepare scripts in different languages and have them run in the terminal (konsole) window, it is suggested to first set up the appropriate icons and folders on the desktop as follows:
1. Right click the mouse (i.e. click the right btton on your mouse), then choose Create new and then click folder from the subcontext menu that will appear on the screen.
2. Enter the folder name, example My scripts. Double-click the folder you have just created and start adding the links to applications.
3. Right-click your mouse, then choose Create new and click Link to application. In the dialogue box that will appear (under the general tab), type the name of the script language, eg. my perl scripts. Click the Application tab, then go to the Work path field, click on the icon to the left of the field then click on the folder having you scripts (in our example would be perl scripts). Then go to the command field and type konsole, then click the OK button in the dialogue (tab) box.
4. Now you have an icon in the scripts file (on your desktop) for perl ones, you can have additional ones for python, tcl, ruby,...etc.
5. When you click this icon a shell session will start in the scripts directory that you want, eg. perl. You can get a list of files in the directory (by typing dir or ls at the prompt), then you can start your perl scripts by typing perl followed by a space and the file name (having the script) with .pl extension. If you have the sha-bang in your script (this special first line is #!/usr/bin/perl), then you run your script with ./ and the file name with its extension (with no space between ./ and the file name). The same applies to the other scripting languages mentioned here.