ehv cable safeguarding-an augmented reality” · augmented reality (ar) is a field of computer...
TRANSCRIPT
14th OCT 2017
“EHV CABLE SAFEGUARDING-AN AUGMENTED REALITY”
RELIANCE INFRASTRUCTURE LTD- MUMBAI TRANSMISSION
Paresh KhamkarTukaram TalandeSandeep GodboleVikaas Sonar
Confidential 2
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
Confidential 3 3
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
Confidential 4
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
Confidential 5
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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R-INFRA IS EQUIPPED WITH CABLE TEST VAN
Cable Test Van is equipped with High voltage DC pressure test Kit, VLF test & Surge units.
Confidential 18
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
Confidential 20
Height raising of Link Box & OFC Chambers up to road level
RAISING HEIGHT OF LINK BOX & OFC CHAMBERS
Confidential 21
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
Confidential 27
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
Confidential 28
To ensure healthiness of sheath , 5kV DC pressure test is
carried out along with IR test.
SHEATH TESTING OF 220KV CABLE
Confidential 30
Sheath testing of 220kV cable is tedious & time consuming test procedure
which involves lifting of Precast slab , opening of Link box chamber .
SHEATH TESTING OF 220KV CABLE
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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.
SHEATH TESTING OF 220KV CABLE
Confidential 32
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
Confidential 33
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
Confidential 41
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
USE OF AUGMENTED & VIRTUAL REALITY
Confidential 43
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
USE OF AUGMENTED & 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
44
USE OF AUGMENTED & VIRTUAL REALITY
Confidential 45
USE OF AUGMENTED & VIRTUAL REALITY
Google Earth View of mapped 220kV Aarey Saki Cable route
Confidential 51
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
Confidential 52
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