Clean Energy on Move
E&BS of various traction systems
Differences in principles and details of various traction system impose different design, equipment and implementation for the E&BS. Generally it can be classified into the following systems:
- E&BS for 25kV with return circuit, booster transformers and dedicated earth wire.
- E&BS for 2x25kV with extra feeder wire and dedicated earth wire
- E&BS for permanent earthed DC traction supply
- E&BS for floating earth DC traction supply with AGS
Implementing the E&BS for an electrification Project
As a matter of fact, E&BS can be seen as a separate subsystem or part of the traction power supply and OHL. It means E&BS acts like a referencing bed for those of interconnected subsystem. Therefore, implementation of the E&BS should be done in parallel and close with the related traction power supply and OHL. Following flowchart explains more in details how a great E&BS design satisfies all integrated subjects.
>>E&BS, Flowchart of Project Implementation
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- Return circuit design and layout
- Earth Study Algorithm/flowchart
- Stray current and rail potential study
- E&BS strategy and concept design
- Short circuit study Algorithm/flowchart
- Floating or non floating system design
- Stray current study and elimination method
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& Bonding Solutions
Earthing
E&BS Engineering
> Business development for rail projects
> Technical Support for Biding and Tendering
> Short circuit Study and Fault Analysis
> Earthing system Modeling and Simulation
> Earthing and Bonding Design
> Layout and bonding Arrangement
> Conductors and connectors sizing
> System requirement management
> Procurement Support
> Protection Coordination
> RAMS, HA, MA, FMECA
Project Management
> Engineering Design Management
> Design Review and Report
> Quality Assurance
> Earth Gird Construction Support
> E&BS Inspection and Audit
> Conductivity Test and Commissioning
> Asset and maintenance management
> Safety and reliability Assessment
> Presentation and Documentation
> Training and Mentoring
Earthing & Bonding System
When it comes to E&BS in electrified railways, the main point is the E&BS compounds with the traction power return circuit (RC) which is normally the tracks. That makes E&BS a bit complicated for traction power system.
Following objectives are essential to be addressed in a robust and responsive E&BS:
- Integration with RC
- Integration with Protection system
- Safety in all equipment, rail vehicles, stations and workshops
- EMC and Stray Current considerations
- Integration with other power systems