Electrical Transient Analysis program (ETAP)

Course details

The Electrical Transient Analyzer Program (ETAP) course equips participants with advanced skills in modeling and simulating electrical networks using ETAP software. Participants will learn fundamental concepts of power system analysis, including short circuit calculations, power flow analysis, and voltage drop considerations. The course covers essential topics such as transformer sizing, switchgear ratings, and the design of earthing systems and transmission lines. Practical sessions include hands-on exercises in ETAP for simulating power system scenarios and conducting comprehensive analyses. Upon completion, participants will be prepared to apply their knowledge to design, analyze, and optimize electrical systems in various industrial and commercial settings.

Course Objectives:

Upon successful completion of this course, participants will:

• Understand the importance of power system modeling.
• Comprehend the need for calculating short circuit currents.
• Perform manual short circuit calculations using methods like MVA method and system studies.
• Analyze balanced and unbalanced power flow.
• Determine voltage drops and perform cable sizing calculations.
• Size transformers for MVA requirements.
• Analyze motor starting and acceleration dynamics, both static and dynamic.
• Evaluate switchgear ratings for breaking and making capacities.
• Recognize the importance of arc flashing and relay coordination for operational safety.
• Design substation grid earthing systems using ETAP.
• Conduct test case simulations using ETAP software.
• Explore the advanced capabilities of ETAP Power Station from OTI.

Course Details:

Electrical System Design

Module 1: System Planning

• Basic design considerations.
• Planning guide for supply and distribution systems.
• Modernization and evaluation studies of power systems.
• Voltage control and selection in electric power systems.
• Considerations for voltage drops in locating low and high voltage areas.

Module 2: Cost Estimation of Industrial Power Systems

• Preparation of cost estimates.
• Evaluation of equipment and material costs.
• Installation costs and other related expenses.

Module 3: Lighting Design

• Types of illuminating systems and sources (e.g., daylight, incandescent, fluorescent).
• Illumination laws and photometry.
• Interior and exterior lighting design considerations for various applications.

Module 4: Cable Sizing and Selection

• Calculation of load details.
• Selection of cable types based on construction features.
• Factors influencing cable selection such as current ratings and installation conditions.
• Voltage drop calculations and impedance considerations.
• Maximum permissible voltage drop according to ANSI and IEC standards.

Module 5: Earthing Design and Calculation of Power Plants

• Factors influencing the choice of earthed and unearthed systems.
• Design and calculation of system and equipment earthing.
• Calculation of step and touch voltages.
• Compliance with standards (IS, IEC, IEEE, BS).

Module 6: Design and Engineering of Transmission Lines

• Transmission planning considerations.
• Compliance with Indian Electricity Rules and state regulations.
• Selection of conductors for overhead transmission lines.
• Calculation of SAG (sagging) and tension.
• Overhead transmission line clearance considerations.

Module 7: Design and Engineering of Switchyards

• Classification and selection of projects.
• Electrical clearance and insulation coordination.
• Layout design of outdoor substations and control rooms.
• Selection and sizing of main substation equipment (transformers, CBs, isolators, etc.).
• Design of bus bar schemes.
• Sizing of voltage and current transformers, HT/LT CBs, control panels, isolators, lightning protection, insulators, batteries, UPS systems, and capacitors.
• Techniques for power factor improvement.

Drawings:

• Preparation of electrical layouts and symbols.
• Creation of single-line and three-line diagrams.
• Layout design for earthing systems and substations.

Case Study (Using ETAP Software):

• Preparation of single-line diagrams.
• Load flow analysis.
• Short circuit analysis.
• Harmonics analysis.
• Stability analysis, and more.

This course provides comprehensive training in ETAP software and electrical system design, equipping participants with practical skills and knowledge essential for careers in power engineering and related fields.