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we hereby inform you of a modification regarding the file inactivity regulations for Collector’s accounts. The guaranteed storage time of a file after the last download (or after the upload, if a file has never been downloaded) will be lowered to 60 days on January 1st, 2010.
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December 7th, 2009 | Posted in General | No Comments
ETAP PowerStation Portable requires no installation. Unzip it into your memory stick and run it to any computer running windows (not tested on Vista).
ETAP PowerStation is a fully graphical electrical transient analyzet program that can run on Windows XP or lower (not tested on Vista) environmets.It provides large network analysis requiring intensive computation and online monitoring and control applications.
ETAP PowerStation allows you to work directly with graphical one-line diagrams and underground cable raceway systems. The program has been designed to three key concepts:
1. Virtual Reality Operation – The program resembles real electrical system operations as closely as possible. It incorporates new concepts for determining protective coordination directly from the one-line diagram.
2. Total Integration of Data – It combines the electrical, logical, mechanical and physical attributes of system elements in the same database. Cables, for example does not only contain electrical properties but also physical dimensions and the information indicating the raceway which it is routed which could be used for load flow analysis.
3. Simplicity in Data Entry – It keesp track of the detailed data for each electrical apparatus. Data editors can speed up the daa entry.
PowerStation’s one-line diagram supports a number of features to assist you in constructing networks of varying complexities. Each element can inidividually have varying orientation, sizes, and display symbols (IEC or ANSI). The one-line diagram allows you to place multiple protective devices between a circuit branch and a bus.

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October 23rd, 2008 | Posted in Calculation | 1 Comment
Title: Electric Power Substations Engineering
Author: John D McDonald
Publisher: CRC
Publication Date: 2003-06-27
Number Of Pages: 304
ISBN: 0849317037
Average Amazon Rating: 4.5
Description
This book covers all aspects of substations, from the initial concept to design, automation, operation, and physical and cyber security. Written by members of the Institute of Electrical and Electronic Engineers (IEEE) Power Engineering Society (PES) Substations Committee, each section provides a tutorial and includes references for further reading and study. The authors use photographs and graphics to help the reader understand the material. Exploring the most recent technological developments
Chapter 1 How a Substation Happens
Chapter 2 Gas-Insulated Substations
Chapter 3 Air-Insulated Substations – Bus/Switching Configurations
Chapter 4 High-Voltage Switching Equipment
Chapter 5 High-Voltage Power Electronic Substations
Chapter 6 The Interface between Automation and the Substation
Chapter 7 Substation Integration and Automation
Chapter 8 Oil Containment
Chapter 9 Community Considerations
Chapter 10 Animal Deterrents/Security
Chapter 11 Substation Grounding
Chapter 12 Grounding and Lightning
Chapter 13 Seismic Considerations
Chapter 14 Substation Fire Protection
Chapter 15 Substation Communications
Chapter 16 Physical Security
Chapter 17 Cyber Security of Substation Control and Diagnostic Systems
Chapter 18 Gas-Insulated Transmission Line (GIL)
Index
http://rapidshare.com/files/313679447/Electric_Power_Substations_Engineering.zip
November 29th, 2009 | Posted in Downloads, General, References | No Comments
By Thomas Allen Short
* Publisher: CRC
* Number Of Pages: 344
* Publication Date: 2005-11-29
* ISBN / ASIN: 0849395763
Practitioner Short has selected chapters from Electric Power Distribution Handbook to create this concise, focused reference on the technologies and infrastructure necessary for power distribution along vast distances as well as to local customers. Topics of those chapters include the fundamentals of distribution systems, including urban networks, distribution substations, and differences between European and North American systems; overhead lines, including typical constructions, simplified line impedance calculations, and fault withstanding capacity; underground distribution, including applications, cables, cable testing and fault location; transformers, including single-phase, three-phase, special transformers and loadings; voltage regulation, including techniques, regulators and station regulation; and capacitor application, including reducing line losses and caring for failure and case ruptures.
- Fundamentals of distribution systems
- Overhead lines
- Underground distribution
- Transformers
- Voltage regulation
- Capacitor application

November 29th, 2009 | Posted in General, References | No Comments