TRACTION POWER NETWORK PROTECTION

Delivery:  Face to Face 

SYDNEY,      11-12 October 2021
ADELAIDE,  14-15 October 2021

Introduction

Electric railways date back to the 1840s. The original relatively low voltage Direct Current (DC) systems are still in use throughout the world. Alternating Current (AC) systems with comparatively higher voltages have become prevalent in more recent times.  Although it is over 170 year old, railway electrification technology is still very relevant with massive developments throughout the world including Australasia. The overarching objective of traction power protection systems is to ensure fast, reliable, and selective clearance of unwanted conditions within the traction power network. In other words, to ensure safety of personnel, public and equipment, while minimising disruptions to the rail traffic. The protection systems are therefore a critical part of the traction power network and understanding how they operate and how to design them is essential for the safe and reliable operation of an electric railway.

Why Study Traction Power Network Protection?
Due to their inherent nature, traction networks are in many ways unlike any other electric networks. Firstly, they are single phase, eliminating the “√3” from the calculations. Secondly, the network topologies, ranging from relatively simple DC rail networks to highly complex AC autotransformer networks, result in peculiar current distributions affecting the power flow and short circuit analysis, and subsequently the protection philosophy and calculations. Finally, even though it is a “mature” technology, it is still going through major innovations, with the introduction of the new technologies, such as Static Frequency Converters, which have a significant impact on protection systems.

In many cases the protection system cannot prevent faults from occurring, but it can and must limit their effects. As with conventional power networks, the protection schemes must detect faults, but also apply discrimination in isolating the faulty section, and prevent spurious operations during healthy conditions which may appear as faults. In this context railways present as a unique problem. The “loads” (trains) are travelling along the protected railway sections and may also act as generators if the locomotives are operating in regenerative braking mode, and with high inrush currents from the locomotive supply transformers. The 2x25kV Auto Transformer systems are particularly of interest with non-linear feeder impedances, and the effect of Auto Transformer inrush during energization of track feeder sections. Single phase Harmonic Filters are commonly used in traction networks and must be adequately protected from fault conditions, but also from causing unwanted conditions to the traction network.  The nature of the traction networks with high load and particularly high inrush currents vs often comparatively low fault currents has resulted in development of protection schemes which are not commonly seen in conventional networks.

Seminar Objectives

This seminar delivers an understanding of:

  • Different electric railway systems and their topologies
  • Traction power network protection elements and their objectives
  • Traction power network components and how to model them for protection studies
  • Current transformer performance and selection principles for traction power protection
  • A detailed understanding of various protection schemes and methods for setting them for AC and DC traction power systems

Topics to be covered

To see full seminar contents, click Download Brochure button below

  •  Introduction on AC & DC traction networks
  •  Traction Power Network and Modelling & Examples
  •  Current Transformer Performance for Traction Protection
  •  AC Traction Protection Functions & Examples
  •  DC Traction Protection functions & Examples
  •  Typical protection schemes overview
  •  Typical Protection Logics Power transformer
  •  Typical Relay Configurations

About the Seminar Leader

Our seminar leader received his MSc from the University of Belgrade, Serbia in 1995, and his PhD in Electrical Engineering from the Queensland University of Technology, Brisbane, Australia in 2020. He has been a Registered Professional Engineer of Queensland since 2004.

Between 1995 and 2000 he was with Energoprojekt, Belgrade, Serbia, working on Transmission and Distribution Substation projects in Nigeria and Botswana. From 2001 to 2002, he worked for UGL, Sydney, on water treatment plant electrical networks, DC railways and Transmission Substation upgrades. Between 2002 and 2006 he was with Power Queensland, in Brisbane, Australia, working in Transmission Protection and Automation.  From 2006 to 2008 he was with WorleyParsons, Brisbane, working in the Oil field and on QLD and NSW Distribution Network upgrades. Between 2008 and 2019 he was with Queensland Rail and Aurizon, Brisbane, working on major Traction Power Network upgrade programs within the Queensland passenger and heavy haul railway networks.   Since 2019, he has been with an international engineering consulting company in Brisbane as Associate Technical Director, working predominantly in the rail and oil and gas sectors.

In 2020, he has completed his PhD in the field of Traction Power Network analysis. He has conducted significant research and has published numerous papers in the areas of Protection, FACTS and large scale Battery systems for Traction Power Networks.  As a member of IEEE, he has reviewed numerous IEEE conference and journal papers in the Traction Power field. He has delivered several training courses in Traction Power Network Protection for Aurizon engineers and field technicians.

Seminar Fees (2-Day Seminar)

  • Super Early-Bird Fee

    (If payment & registrations
    are received by 12 Aug 2021)

  • Registration Fees (Excl. GST) :
    AU$1,280
  • Early-Bird Fee

    ( If payment & registrations
    are received by 9 Sept 2021 )

  • Registration Fees (Excl. GST) :
    AU$1,330
  • Standard Fee

    ( per delegate )

  • Registration Fees (Excl. GST) :
    AU$1,380

GROUP DISCOUNTS

CPD International recognizes the value of learning in teams. Register 3 or more delegates and receive 5% off current fee. Group Discount will compound on the top of your early-bird discount fees where applicable