EHV CABLE SAFEGUARDING-AN AUGMENTED REALITY” · Augmented reality (AR) is a field of computer research which deals with the ... Also 90% of outage time gets ... Confidential 52

14th OCT 2017

“EHV CABLE SAFEGUARDING-AN AUGMENTED REALITY”

RELIANCE INFRASTRUCTURE LTD- MUMBAI TRANSMISSION

Paresh KhamkarTukaram TalandeSandeep GodboleVikaas Sonar

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Reliance Anil Dhirubhai Ambani Group

Reliance Infrastructure Limited …….Building India of tomorrow

Energy Infrastructure

Generation

Transmission

Distribution

EPC

Power Trading

Oil & Gas

Coal Mining

MRTS

Roads

Sea Links

Airports

Containers

Real Estate

SEZ

Most diversified Energy & Infrastructure Group in India

Mumbai Transmission

ABOUT RELIANCE INFRASTRUCTURE LTD

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RInfra-MTB - a transmission licensee having 5 Nos of GIS substation & 3 Nos. of AIS

substation with total MVA Capacity of 3000 MVA .

ABOUT RELIANCE INFRASTRUCTURE LTD

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220KV CABLE ASSET IN R-INFRA MUMBAI TRANSMISSION

Sr.No. Description of Cable route Route length in

(Circuit Km)

Cable length in

Km

1 REL Aarey –REL Saki 7.8 23.4

2 MSETCL Trombay - REL

Chembure

16.25

48.75

3 MSETCL Borivali - REL Borivali 4.8 14.4

4 MSETCL Borivali - REL Gorai 16.2 48.6

5 REL Ghodbunder - MSETCL

Boisat - Borivali

8.6

25.8

Total 53.65 160.95

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CHALLENGES IN METROPOLITAN CITY

Frequent excavation over cable route for urban development activities

Use of Mechanized excavators for excavation.

Plethora of utilities over 220kV Cable.

Frequent use of HDD ( Horizontal Drill drive) by major utilities for road

crossing & to avoid re-instatement charges.

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THREAT TO CABLE

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THREAT TO CABLE

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THREAT TO CABLE

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THREAT TO CABLE

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THREAT TO CABLE

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THREAT TO CABLE

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THREAT TO CABLE

Refurbishment of old water pipe line valves

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INSTALLATION & MAINTENANCE OF CAUTION BOARD

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R-INFRA IS EQUIPPED WITH CABLE TEST VAN

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R-INFRA IS EQUIPPED WITH CABLE TEST VAN

Cable Test Van is equipped with High voltage DC pressure test Kit, VLF test & Surge units.

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APPLICATION OF FIRE RETARDANT PAINT

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OTDR Testing of OFC & DTS Cables

OPTICAL FIBER MAINTENANCE

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Height of Link Box / OFC / DTS chambers is raised to road level as &

when required in condition base maintenance.

RAISING HEIGHT OF LINK BOX & OFC CHAMBERS

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Height raising of Link Box & OFC Chambers up to road level


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MAINTENANCE PRACTICES FOLLOWED BY R-INFRA

DTS (Distributed Temperature Sensing) systems

Sheath testing of 220kV cables.

Ground patrolling by security personal.

Monitoring patrolling personal by guard tour machine.

Real Time Monitoring of Patrolling person

Web monitoring of excavation activities

Use of Augmented –Virtual reality.

Forward Path….

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DTS (DISTRIBUTED TEMPERATURE SENSING) SYSTEMS

Mumbai Transmission has installed LIOS ( German Make) &

Silixa ( UK Make) DTS system for monitoring Cable Temperature.

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Objectives of DTS System:

Analyze & evaluate available temperature data from DTS system.

Investigate Data that may be useful in quantitative modeling of the EHV

cables reliability & capability.

Determination of cable safety margin based on temperature analysis &

hot spot information.

Technology Behind Distributed Temperature Sensing.

Temperature is sensed by “Raman Spectra.”

An optical fiber cable (Multimode) functions as a temperature sensing

device

DTS (DISTRIBUTED TEMPERATURE SENSING) SYSTEMS

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TYPICAL GRAPHICAL DISPLAY OF LIOS MAKE DTS SYSTEM

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TYPICAL GRAPHICAL DISPLAY OF SILIXA MAKE DTS SYSTEM

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FORECASTING STPL ( SHORT TERM PERMISSIBLE LOADING)

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Sheath testing of 220kV Cable is carried out once in two year

to measure the healthiness of HDPE sheath.

5kV DC voltage is applied between aluminum sheath & earth

for 1 min.

SHEATH TESTING OF 220KV CABLE

5 kV DC

Source

GND

Damage

to outer

sheath

Al Sheath

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To ensure healthiness of sheath , 5kV DC pressure test is

carried out along with IR test.


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Sheath testing of 220kV cable is tedious & time consuming test procedure

which involves lifting of Precast slab , opening of Link box chamber .


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A trolley was designed & developed for easy lifting of Precast slabs.

Caste study for innovation in trolley design was presented in Quality

Circle forum of India ( QCFI) , where it receives highest accolade in State

& national level presentations.


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Security Personals are deployed for walkover Patrolling of 220kV EHV

cable route.

Every Cable route is patrolled 4 times in a day.

Patrolling Call register are maintained for recording threats on cable route.

Cable Safeguarding team available for site on beck & call.

DAILY GROUND PATROLLING BY SECURITY PERSONAL

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For effective monitoring of patrolling, guard tour machines with sensors

tag are used.

Sensor tags are fixed at every @1Km distance.

Punched data is downloaded weekly for verification.

MONITORING PATROLLING PERSONAL BY GUARD TOUR MACHINE.

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Installation of Sensor tag

Fingerprint sensor adds to full proof control over patrolling person

MONITORING PATROLLING PERSONAL BY GUARD TOUR MACHINE.

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REAL TIME MONITORING OF PATROLLING PERSON

Real time monitoring of

patrolling person with

the help of “Location

sharing” mode in

Google Map

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WEB MONITORING OF EXCAVATION ACTIVITIES

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Augmented Reality

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USE OF AUGMENTED & VIRTUAL REALITY

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Augmented reality (AR) is a field of

computer research which deals with the

combination of real-world and computer-

generated data.

Most of the AR research is currently

concerned with the use of video imagery

which is digitally processed and

augmented by adding computer-generated

graphics.

The features of AR are -

Combines real and virtual world aspects

Is interactive in real-time

Is registered in three dimensions

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Augmented Reality


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Virtual Reality

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Virtual Reality (VR) refers to a high-end user interface that involves real-time

simulation and interactions through multiple sensorial channels.

The features of VR are –

Virtual Reality allows a user to interact with a computer-simulated environment, be it a real

or imagined one.

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Virtual Reality


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Current Challenges faced by Utilities

While Planning any new asset and infrastructure, the engineers have to rely

on the age-old maps and drawings and cannot visualize the end-state

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Google Earth View of mapped 220kV Aarey Saki Cable route

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Sheath test requires shutdown of feeders. Also 90% of outage time gets

consume in opening & closing of precast Covers & link boxes.

To avoid this Mumbai Transmission is switching towards on- line

Monitoring of High Voltage Cable outer Sheath. This will avoid

requirement of shutdown.

FORWARD PATH…..R & D INITIATIVES

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To have better control over cable safeguarding, R-infra Mumbai

Transmission is switching towards on-line monitoring of intrusion

detection on cable route to bring automation in process.

FORWARD PATH…..R & D INITIATIVES

Final Desired output in Map based representation

THANK YOU

Documents

EHV CABLE SAFEGUARDING-AN AUGMENTED REALITY” · Augmented reality (AR) is a field of computer research which deals with the ... Also 90% of outage time gets ... Confidential 52