6.1. ERMUSR 11-16-2010 - Laserfiche WebLink

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RELAYING 11 Protecting Transmission lines Terminated Into Transformers Roger Redding, ABB, Inc. Transmission lines that are terminated into transformers are applications where the line and transformer cannot be separated by a circuit breaker and are therefore in the same zone of protection. These applications maybe addressed with either current differential or line distance protection. In either case the implementation of separate transformer differential protection isolating the protection zone is recommended. The line protection application needs to consider the instrument transformer locations and transformer winding connections atthe transformer end. This paper will discuss the application considerations for both line differential and distance schemes for lines terminated into transformers and provide setting examples. Highlights of the IEEE 037.234 Guide for Protective Relay Application to Power System Buses Working Group Kf4 of the IEEE PES Power System Relaying Committee Pratap Mysore, Xcel Energy The presentation highlights bus protection concepts discussed in the IEEE guide, 037.2342009. Selection and application of protection schemes influenced by the availability and location of breakers, current transformers, and disconnect as well as bus switching scenarios also will be presented. Broken Rotor Bar Detection ...Past, Present, and Future Dan Swigost, Basin Electric Power Cooperative A microprocessor relay has been used for the last decade to find or confirm broken rotor bars in squirrel cage induction motors. A look at how it has been used and what additional relay enhancements would make broken rotor bar detection effective. Fault Locator Based Line Current Differential Relay Synchronized Measurements Ilia Voloh, GE Digital Energy - Multilin This paper presents a new patent pending multi-ended fault locator, integrated within line current differential relays protection relays and working in real time.. It takes advantage of synchronized measurements transmitted between Gne terminals and is achieving great accuracy at no additional cost. TUTORIAL I Relaying 102 Tom Ernst, Minnesota Power This tutorial series is aimed at the engineer who is new to protective relaying or is looking for a refresher. ft will be interactive with the audience and will cover the application principles of protective relaying including communication systems, advanced line protection methods, shunt capacitor bank protection and rotating machine protection. Real-life examples will be provided. TUTORIAL II Distribution Planning for the "Smart" Utility David Farmer, UC Synergetic, Inc. As smart grid technologies evolve from the substation to the end user, the amount of information available will increase exponentially presenting distribution engineers with unique challenges previously unseen in the industry. Integrating distributed generation and renewable energy sources will presem planners with new technical challenges, as well. This presentation will review essential distribution planning concepts with a focus on newtechniques and mindsets that will be necessary as these technologies penetrate the system.