Course Name: Dynamic Structural Rigid and Flexible Bus Design in Air Insulated Substations
Course Dates: May 15-16, 2025
Course Objective
Understand structural design principles. enable substation bus design and structural analysis of practical substations, consisting of rigid bus as well as strain bus arrangements.
Course Instructors
A.P. Meliopoulos, Ph.D.
George Cokkinides, Ph.D.
Scope
Increased fault currents result in higher forces on bus structures during fault events. Severe weather effects add to the mechanical loading of bus structures. The high probability of faults during severe weather necessitates design procedures that will result in substation designs that will withstand the combined forces of severe weather and fault current forces and ensure the reliability of the system during these events. Proper structural design of the substation bus structures ensures a safe and reliable operation of the substation and the power system.
This two-day intensive course provides a review of the IEEE Std-605 and other related standards such as the IEC 60865. Basic and advanced analysis methods for both rigid and strain bus design are presented. Static and dynamic modeling and analysis approaches are also presented and compared. The course covers the fundamental principles, as well as the practical methods for the computation of forces and stresses in bus structures, insulators and supports. Guidelines for the selection and verification methods of proper bus/conductor ratings, supporting structures and insulators are discussed. Forces under consideration include magnetic forces (due to fault currents), forces due to wind, and gravitational forces due to weight and ice accumulation. Modeling and analysis requirements needed for the application of standard methods such as ASD and LRFD will be presented.
The course will also cover standards and computational methods to assess the seismic withstand capability of electrical substation equipment.
Course Instructors
Who Should Attend
This course is designed for electric power utility engineers, electrical, mechanical or civil engineers involved in the design of substations and electrical installations. It is also intended for consulting and manufacturing engineers and engineers with substation equipment supply companies. University power system educators and graduate students will also benefit from exposure to this important topic.
Prerequisites
Participants should have an engineering degree (electrical, mechanical, or civil), or equivalent experience.
Course Materials
The following material will be used during the short course presentations:
Extensive class notes.
A. P. Meliopoulos, WinIGS Structural Dynamic Analysis, Training Guide, September 2016.
A. P. Meliopoulos, WinIGS-SDA Manual, September 2016.
Class notes and the training guide will be provided in electronic forms to all participants. The WinIGS-SDA manual will be provided in electronic form within the WinIGS-SDA program.
Professional Development Hours
Participants who successfully complete this program will earn 16 Professional Development Hours (PDHs). An official transcript of PDHs earned will be provided within 45 days of the completion of the course.
Course Topics
Substation Bus Design standards
- IEEE Standard 605
- IEC 60865
- IEEE Standard 693
- IEEE Standard 1527
- ASTM B188
- ASTM B241/B241M
Substation Bus Arrangements And Design Considerations
- Bus/Breaker Configurations
- Rigid, Strain and Hybrid Bus Structures
- Factors Affecting Bus Design
- Clearances, Insulation, Ampacity
- Bus Design Procedures
Structural Loading Considerations
- Fault currents: Biot Savart forces
- Gravitational forces (weight, ice)
- Forces due to Wind
- Effects of Fault Current Distribution
- Effects of displacement, transients
- Pinch Factor
- Forces on typical bus arrangements
- Typical Examples, Visualization
Stress Analysis
- Static vs Dynamic Analysis
- Compression, Tensile & Shear Forces
- Shear and Tensile Stress
- Calculations for Simple Bus Geometries
- Strength of materials under Combined Loading
- LRFD vs ASD
- Rigid Bus Analysis Examples
- Strain Bus Analysis Examples
- Insulators and supports
- Natural Frequencies and Vibration
- Vibration Damping
- Visualization of Typical Examples
Properties of Materials
- Mechanical Properties
- (Density, Modulus of Elasticity & the Poison Ratio)
- Permissible stresses
- (Elastic Limit, Minimum Yield, Ultimate Strength)
- Thermal Properties
- (Thermal Expansion, Effect of temperature on strength and deflection)
- Electrical Properties
- Materials Data Libraries
Properties of Sections
- Section Geometry
- Moments of Inertia
- Support Beams, Insulators and Conductors
- Rigid & Strain bus conductors
- Sources of data
- The Sections Library
Simple Rigid Bus Analysis Examples (IEEE 605 Hand Calculations)
- Design Specification
- Ampacity
- Corona
- Effects of Mechanical Loads
- Gravity
- Ice & Wind
- Magnetic Forces
- Thermal Loads
- Other Considerations
- Maximum Deflection Criteria
- Insulator Strength
- Natural Frequencies, Vibration & Damping
- Clearances
Simple Strain Bus Analysis Examples (IEEE 605 Hand Calculations)
- Design Specification
- Ampacity
- Corona
- Effects of Mechanical Loads
- Gravity
- Ice & Wind
- Magnetic Forces
- Other Considerations
- Insulator Strength
- Natural Frequencies, Vibration & Damping
- Clearances
- Pinch Factor
Computer Based Bus Structural Dynamic Analysis
- Overview of Numerical Computational Methods
- The finite element and corotational methods
- Data & Modeling Requirements
- Creating the Geometric Model
- Selection of Material and Section Properties
- Applying Connections to Electric Network Model
- Selecting Algorithm Control Parameters
- Reports & Interpretation of Results
- Practical Rigid Bus Analysis Example
- Practical Strain Bus Analysis Example
- Visualization of Forces and Stresses
Substation Seismic Design
- Seismic qualification objectives
- Seismic forces/response spectra
- Soil-structure interactions
- Combined seismic/short circuit/wind/ice loads Example
Course Fee & Registration
After April 16, 2025, the registration cost will be $1,700.00.
Training, course materials and a one-month software license of WinIGS-SDA are included in the course fee.
Registration Form
After we have received your registration, we will send you a confirmation and provide payment options.
Alternate ways to register
CALL +1 (512) 636-1448 between 8:00AM – 5PM, Eastern Time
EMAIL your registration to courses@ap-concepts.com
MAIL registration request and payments to:
Advanced Power Concepts
P. O. Box 49116
Atlanta, Georgia 30359
Please be prepared to provide your name, address, company/affiliation, email and
phone contact information and your desired method of payment.