In 2018 a new 220KV Underground EHV Cable Monitoring project is executed by TECHFAB Systems(AP Sensing local partner in India), KPTCL and L&T has selected AP Sensing make DTS system to monitor the underground 2000 Sq.mm. EHV cable in Karnataka.

This is first power cable temperature monitoring system to used in KPTCL. Distributed Temperature Sensing system continuously monitor the sheath and conductor temperature of EHV Cable starting from Yelahanka 220KV Substation to Singanayakahalli 220KV Substation.

The installation has 2 double circuit line and each phase is independently monitored for condition and ampacity calculations.

The solution is provided with specially designed LIU’s to provide immediate redundant connection/change over to spare fiber cores (5 spare fibers per cable / phase are provided).

Smart Vision Software provided an easy to see graphical thermal profile and logs all temperature traces into an SQL databased for post processing and analysis.

The complete system included the Linear Power Series DTS, an Uninterruptable Power Supply, an industrial PC and the AP Smart Vison ,RTTR Software Suite with full Data DTS Panel..