TUTORIALS
Below is a short description of the tutorials offered at this year's conference.
Power System Studies for Wind Power Plants (four hours)
Thursday, October 11, 8:00am - 12:00pm
Organizer: Dr. Babak Badrzadeh, Australian Energy Market Operator
Abstract: This tutorial discusses power system studies conducted on grid connected wind power plants. Classification of different types of studies, and implication in terms of model requirement and short circuit capacity requirement are elaborated. Different types of models for wind turbine generators and the required simulation tools are outlined. Standard power system studies discussed include load flow, reactive power compensation requirement, calculations of power and energy losses, voltage control, frequency control, fault level calculations, and low voltage ride-through capability. Advanced power system studies for specific wind power plants are then discussed. These studies include harmonics, flicker, sub-synchronous interaction, and investigation of temporary and transient overvoltages. The temporary overvoltage case studies discussed include high-voltage ride-through capability, transformer energization and feeder isolation. The high-frequency transient events including assessment of transient recovery voltages and high frequency interaction of balance of plant components in the collector grid of wind power plants are then reviewed. Several simulation case studies for practical wind power plants are presented, and the differentiators between the conventional power systems and wind power plants in terms of the required study methodology are discussed.
Maintenance Considerations and Planning for Electric Power Equipment (eight hours)
Thursday, October 11, 8:00am - 5:00pm
Organizer: Dan Bumblauskas, University of Missouri, PFC Services Inc. and ABB Inc.
Abstract: An introduction to various types of transformers and circuit breakers will be provided along with a discussion on the evolution of maintenance practices. This includes time based maintenance, condition based maintenance, reliability based maintenance, and predictive maintenance. Computerized maintenance information systems have been applied to track maintenance information and history. An overview of the various systems will be provided. Such information systems have not traditionally been used to predict or simulate maintenance decisions and actions. This tutorial will detail two predictive maintenance models, a population data analysis, and an information system architecture which can be utilized to aid operations and maintenance managers with the difficult resource allocation decisions they face in the field. The first model is formulated to address the consideration of component dependency for series network connections using a Markov Decision Process (MDP) model and solution algorithm. The second model is formulated to address the prioritization of maintenance activities for a fleet of equipment using an Analytical Hierarchy Process (AHP) and solution algorithm. A population data set is reviewed and a recurrent data analysis is conducted. The final element is the information system architecture linking these two models to a marketing information system (MkIS) in order to provide quotations for maintenance services. The specific industry of interest is the electrical power equipment industry with a focus on circuit breaker maintenance decision actions and priorities and the development of quotations for such services. This tutorial is of particular interest to operations and maintenance managers working in the electric utility industry and those working in the renewable, sustainable, and green energy industries.
Distribution Volt/VAR Management Strategies (four hours)
Tuesday, October 9, 2:00pm - 6:00pm
Organizer: David M. Farmer, UC Synergetic
Abstract: This tutorial provides utility engineering personnel with the background and skills necessary to more effectively manage distribution losses, voltage, and reactive power flow on a modern distribution systems. Smart grid technologies enable the engineer to better monitor and manage the distribution voltage and VAR profile. The challenge is to select the best mix of solutions based on economic life cycle benefits. This course addresses the essential tools and techniques associated with managing the distribution voltage profile and reactive power flow to achieve economic and operational benefits. Economic analysis methods used to evaluate the optimum mix of equipment and engineering changes will be reviewed, along with the special challenges implementing volt/VAR control on modern distribution feeders.
High Resistance Grounding (HRG) System (four hours)
Sunday, October 7, 8:00am - 12:00pm
Organizer: Dev Paul, AECOM Transportation
Abstract: This tutorial will first cover the basics of an HRG system, which includes inherent system charging current affecting the design criteria of selecting the neutral grounding resistor for an HRG system. Both the medium voltage (MV) power system as well as low voltage (LV) power system HRG system will be part of the tutorial material. Clarification on the fundamentals of HRG system of MV and LV and what is different in the ground fault protection trip and continuity of power system upon detection of line-ground fault will be discussed. Clear presentation of the ground fault current flow during a bolted or arcing line-to-ground fault on one of the phases will be included in the material. Discussion of arcing ground fault condition on one of the phases and how such an arcing fault condition affects equipment damage at the fault location will be part of the tutorial. The electrical equivalent circuit of an HRG power system that includes arcing fault impedance will be included. Discussion will include ground fault protection and tripping of power systems and limitations of system charging current on MV. A year ago, PCIC committee felt that there is a need of new standard on HRG system and this tutorial material will help to outline basic information that may be helpful for discussion purposes in the development of a new IEEE standard on HRG system for industrial and commercial power systems.
Overvoltage Protection Design of Industrial and Commercial ac Power System and Rail Transit dc Traction Power System (four hours)
Thursday, October 11, 8:00am - noon
Organizer: Dev Paul, AECOM Transportation
Abstract: This tutorial will provide an overview of overvoltage protection design of industrial and commercial ac power systems as well as rail transit dc power systems. AC Power System Overvoltage Design: Topics include causes of transient overvoltage, lightning and switching surges; characteristics of surges and how they can damage power system equipment; surge impedance, surge propagation, surge energy, and surge conduction through surge protection device and equipment overvoltage margin of protection when a surge protection device is applied; characteristics of surge protection devices and their surge handling capability; power system grounding and how it affects the rating of the overvoltage protection device. Examples of equipment insulation coordination and surge protection device applications at appropriate locations within the ac power distribution system will be provided, including actual power system examples for low and medium voltage systems. Rail Transit DC Power System Overvoltage Design: Application of dc surge protection devices to protect the rail transit dc power system will be covered. DC surge protection device application criteria are different than the ac surge protection device. Actual examples of dc traction power system design will be used to cover the design application of dc overvoltage protection device. Draft copy of P1727 will be discussed. Tutorial presenter is currently the Chairperson of the Draft IEEE Standard P1627, "Grounding Practices for DC Electrification Overhead Contact Systems, including Application of Lightning Arresters for Transit Systems".
Understanding IGBT Modules used in Industrial Motor Drives (four hours)
Sunday, October 7, 2:00pm - 6:00pm
Organizer: John F. Donlon, Powerex, Inc.
Abstract: The IGBT module is the heart of modern industrial motor drives. Information provided on IGBT module data sheets varies considerably between manufacturers and leaves the user with some questions regarding its proper selection, application, and function in industrial motor drives. The intent of this tutorial is to aid the user in understanding the proper application of an IGBT. Questions and concerns a user might have will be addressed by the various techniques and circuit examples that will be presented. IGBT chip technology and device packaging options will also be discussed. The attendee should leave the tutorial with a better understanding of the IGBT, both specifically as a product and generally towards its application. The tutorial's goal will be to impart an understanding of the features, characteristics, and limitations of the IGBT. This will include the application of IGBTs in power circuits, protecting the IGBT from internal and external disturbances, and an understanding of thermal design and handling considerations. The tutorial is intended for users new to IGBTs and drives based on them as well as a refresher for the experienced user with questions about confusing or conflicting information on the data sheets from various manufacturers.
Application Concerns for Medium Voltage Drives (four hours)
Wednesday, October 10, 2:00pm - 6:00pm
Organizer: Kurt LeDoux, Toshiba International Corporation
Abstract: Medium Voltage Drives used for the speed control of large electric motors have gained great popularity in industry especially due to emissions control legislation prohibiting the use of internal combustion engines as drivers for large pumps. Power conversion topology differs between manufacturers and creates differing application concerns for the end user. This tutorial explains the application concerns to be considered when purchasing, applying, installing and commissioning a medium voltage drive.