Hi everyone, Currently i am working on the Dual Power Supply having AC and DC and neural section is between them. I would like to know that what are new technique and trends to reduce the effect of Rail Potential in Railway System except using VLD, OVPD, Increasing Rail to earth resistance, RCPD. I need to know some new method through we can reduce the effect of Rail Potential in Railway system.

Please let me know if someone has information about it.