Distribution System Projects

HVDS is acronym for High Voltage Distribution System. This system is being implemented exclusively for giving supply to agriculture connections on selected 11KV agriculture feeders. Implementation of HVDS involves conversion of Low Voltage Distribution System to High Voltage Distribution System – HVDS by replacing the existing 415V LT line to 11KV HT line and replacing the higher capacity (100/63KVA) Distribution Transformers (also known as “mother DTR”) with lower capacity (25KVA) Distribution Transformers.

In HVDS system, LT overhead line is completely avoided and instead LT AB cable is used from DTR up to consumer agriculture bore well, thus eliminating LT line faults 100%.

Advantages:

 

  • Reduction in line losses since HV line is taken almost up to consumer load point and on LV side AB cable is used.
  • Failure of agriculture DTRs are minimized as LT overhead line is avoided and also load  per DTR is restricted. Hence, no failure on account of over load and LT faults.
  • Reduction of unauthorized agriculture connections, as one small capacity (25KVA) DTR is erected for two or three agriculture consumers. The agriculture consumers will have a feeling of ownership of transformer due to limited connections on it.
  • As 11KV line is taken almost to the load point, improvement in voltage profile near agriculture pump sets is observed resulting in good performance of motor.
  • Pilferage of electricity is completely avoided as LT AB cable is used from DTR LV up to consumer bore well.

SSE also executes the System Improvement Project works for conversion of existing LT network into High Voltage Distribution System (HVDS) in India. It has done LT to HT Conversion for more than 3500KMs, erected LT AB Cable for more than 2500KM and about 30,000 Nos. of Distribution Transformers were supplied and erected in various projects in AP and is currently executing orders for HVDS projects by supplying and erecting more than 40,000 Nos. of Distribution transformers along with line conversion and these projects will be completed as per schedule during the F Y 2013-14.