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Principles of Systems Operation
Introduction to WECC 
2. Fundamentals of Electricity 
3. Power System Overview 
4. Principles of Generation 
5. Substation Overview 
6. Transformers 
7. Power Transmission 
8. System Protection 
9. Principles of System Operation
- Summary
- • 150 pages •
-
• EE201
Introduction to WECC 
2. Fundamentals of Electricity 
3. Power System Overview 
4. Principles of Generation 
5. Substation Overview 
6. Transformers 
7. Power Transmission 
8. System Protection 
9. Principles of System Operation
Substation Interlocks
Interlocking in substations is a critical aspect of power system protection and control, 
designed to ensure the safe and efficient operation of substation equipment. The primary 
objective of interlocking is to prevent hazardous situations, such as energizing an earthed circuit or operating isolators under load 
By the end of this article, readers will gain valuable insights into how interlocking enhances safety, system reliability, and operational efficiency in substations.
- Summary
- • 18 pages •
Interlocking in substations is a critical aspect of power system protection and control, 
designed to ensure the safe and efficient operation of substation equipment. The primary 
objective of interlocking is to prevent hazardous situations, such as energizing an earthed circuit or operating isolators under load 
By the end of this article, readers will gain valuable insights into how interlocking enhances safety, system reliability, and operational efficiency in substations.
Protection Schemes for 11kv system
Presentation on distribution Network Protection 11kV
- Presentation
- • 21 pages •
Presentation on distribution Network Protection 11kV
P&ID Development Procedure
The purpose of this procedure is to define the methodology to be followed for the preparation of Piping and 
Instrumentation Diagrams drawings for the Bandar Abbas Gas Condensate Refinery Project. 
This document presents minimum requirement with respect to the preparation and presentation of the Piping 
and Instrument Diagrams (P&ID’s) for the detail design phase of Bandar Abbas Gas Condensate Refinery 
Project. 
These minimum requirements shall be applied but not limited to the Process U...
- Summary
- • 147 pages •
The purpose of this procedure is to define the methodology to be followed for the preparation of Piping and 
Instrumentation Diagrams drawings for the Bandar Abbas Gas Condensate Refinery Project. 
This document presents minimum requirement with respect to the preparation and presentation of the Piping 
and Instrument Diagrams (P&ID’s) for the detail design phase of Bandar Abbas Gas Condensate Refinery 
Project. 
These minimum requirements shall be applied but not limited to the Process U...
Electrical Cable Sizing Criteria.
Complete Guide for Power Cables Sizing Criteria, MV, LV cable sizing
- Summary
- • 32 pages •
Complete Guide for Power Cables Sizing Criteria, MV, LV cable sizing
Basic Electrical Calculations Guide
Complete Electrical guide with formulas and concepts
- Summary
- • 290 pages •
Complete Electrical guide with formulas and concepts
Substation Design consideration,
3. Designing of Substation 
3.1. Service Conditions 
1. Location, Altitude 
2. High and low mean temperature 
3. Temperature extremes 
4. Wind loading and ice loading 
5. Seismic qualification 
6. Area classification 
 
Primary System Characteristics 
1. Local utility 
2. Nominal voltage 
3. Maximum operating voltage 
4. System frequency 
5. System grounding 
6. System impedance data
- Presentation
- • 10 pages •
3. Designing of Substation 
3.1. Service Conditions 
1. Location, Altitude 
2. High and low mean temperature 
3. Temperature extremes 
4. Wind loading and ice loading 
5. Seismic qualification 
6. Area classification 
 
Primary System Characteristics 
1. Local utility 
2. Nominal voltage 
3. Maximum operating voltage 
4. System frequency 
5. System grounding 
6. System impedance data