Stray Current Study for 750VDC Light Rail 

Here are my Experiences managed the EMC and Stray Current issues for Electrified Railways 

Gold Coast Light Rail, Gold Coast, QLD 

​Bombardier Transportation Australia

Project Lead Engineering, 2012 -2013 


Achievement:

Following a model based design, Stray Current Analysis was carried out to be a reference for design and construction of floating earthing and bonding system for GCLR. The proposed return circuit has been mathematically modeled and all interface parameters were influenced to get the system performance data and dynamic interactions. Level of impact, severity of pollution and evalution for mitigation systems were some of the results as a reference to proceed on designing the track works, the floating E&BS system and SCM.    

Key Performances:

> Lead Engineering

> Requirement management

> E&BS Study

> Return Circuit Modelling

> Risk Assessment

> Hazard Analysis

> Standard Application

> Interface Analysis

Stray Current Monitoring System for 750VDC Light Rail 

Key Performances:

> Lead Engineering

> Requirement management

> Concept design

> Detailed Design Review

> Risk Assessment

> Communication System

> Algorithm Development

> Integration Management

> Interface management


Gold Coast Light Rail, Gold Coast, QLD 

​Bombardier Transportation Australia

Project Lead Engineering, 2012 -2013 


Achievement:

Floating E&BS for GCLR can not 100% guarantee the electrified railway asset and all surrounding structure will be immunised against Stray Current attack. So, a distributed SCM has been adapted throughout entire alignment to obsevre any possible insulation failures and current leakage. Measuring the Stray Current directly is almost impossible and inaccurate. Therefore, algorithm like discovring the deep point of the voltage profile and similar has been developed to pick up on time voltage curves and compare it with the reference data for discrepancy.         

   Arc inspection and Camera test for 25kV PTA asset (to be detailed soon)  

   EMC Plan for 750VDC Traction Power and OHL systems of Light Rail (to be detailed soon) 

    Noise assessment for 750VDC TPS (to be detailed soon)

   Traction Power Quality Assessment for 750VDC Traction Power systems of Light Rail (to be detailed soon) 

  Integrating the accomplishments