Tutorial – Surge Protection of Power Systems according to IEEE C62


This tutorial focuses on the application of surge arresters to AC power systems above 1000 volts. It introduces the subject with examples of best practices in Distribution, Transmission, and Substations applications. It also covers the basic AC system fundamentals as they apply to arresters and basic Arrester Fundamentals as they apply to applications.

A detailed overview of how to select the proper arrester rating is covered and includes real world examples.   The tutorial is targeted toward engineers with some power systems knowledge, but even the novice can understand the selection method. IEC terms will be identified and defined when they differ from IEEE terms such as Uc = MCOV etc.

Tutorial Duration

The tutorial will have duration of 6 hours.

Who should attend it

Grid operators and planers, manufacturers, costumers, researchers, students and regulators.

Tutorial Schedule

10 minutes Welcome and Introduction
80 minutes Arrester Applications

This section reviews about 25 different arrester applications as used around the US. Station, Transmission Line, and Substation applications are all covered.

90 minutes AC System Fundamentals

System fundamentals are covered, but only to the extent that apply to arresters. The topics covered are as follows:-

·         Phase to Phase and Phase to Ground voltages are discussed and reviewed relative to arresters.

·         System BIL and Margin of Protection

·         Traveling Wave Phenomena

·         Shielding and Shielding Issues

90 minutes Arrester Fundamentals

Arresters are a complex semiconductor on a large scale. This section covers the very important characteristics of an arrester that are necessary to select the rating of an arrester.

·  Discharge Voltage

·  Discharge Current

·  Disk Fundamentals

·  TOV Capability

150 minutes Arrester Selection Guide

This selection procedure applies to station class, distribution class, and transmission line arresters. The procedure contains the steps as shown below. This is the heart of this presentation and is the most popular section in all seminars of this type.

·  Selecting Arrester Type

·  Selecting MCOV

·  Checking Margin of Protection

·  Checking Energy Handling

·  Checking Pressure Relief and Failure Mode

·  Checking Mechanical Strength and Mounting

·  Understanding the Arrester Data Sheets

30 minutes Questions and Discussion.

About the presenter

Jonathan Woodworth is a 36-year veteran of the surge protection industry. He started this career as a design engineer of lightning arresters with McGraw Edison in 1979 held various positions in engineering and marketing with them for 29 years. He has been actively involved in the development of IEEE standards and guides on arresters for 30 years.   He is currently the working group chair for revisions of IEEE C62.11 Arrester Test standard.   He founded ArresterWorks in 2007, an independent consulting firm dedicated to surge protection of power systems. He has dozens of papers published on many different arrester and lightning protection aspects. He is also actively involved in IEC arrester standards and guides and is co-convenor of IEC TC37 MT4.