Use of Geospatial Technologiesand

Bhuvan in Power SectorAnand Shankar, Neeraj Joshi, Pradeep Chauhan and Pankaj Mahata

POWERGRIDWith inputs from

NTPC, NHPC, POSOCO and EESL

Effective use of space Technology inPower Sector

1. Power Generation (Thermal and Hydro)Identification of Sites for Thermal / Hydro Power Projects and narrowingdown the potential sites

• Short listing of sites for Thermal & Hydro Power Stations, withrespect to following defined parameters Topography/soil conditions Synoptic view on geology & geomorphology Water source study Land use pattern / classification w.r.t vegetative cover, waterbodies, habitations etc. Environmental impact Studies. Identification of natural drainage path and impact of power plant. Identification & Consideration of any structure of majorimportance. Identification of infrastructure facilities (highways, ports andrailways) Integration with climatic data.

• Present Methods in use: Survey of India Topographical Sheets and Google Earth images.

• Limitations: Topo-Sheets are either not updated or are current & is not verydetailed. Google Earth data gives a general idea of the site and do notprovide required details.

Effective use of space Technology inPower Sector

1. Power Generation (Thermal and Hydro)

Environmental Impact Assessment (EIA)- for Proposed sites andpower projects under operation

EIA is a process of identifying, predicting, evaluating and mitigatingthe biophysical, social, and other relevant effects of developmentproposals prior to setting up of Power Projects.

Identification of geological & geomorphic processes, degradedareas and their impact on project development especially inrespect of hydropower projects.

Direct impact on Ambient Air, Water, Noise level, Land Use &Degradation etc.

Indirect impact: on land use pattern, infrastructure, populationdensity/ growth rate .

Effective use of space Technology inPower Sector

1. Power Generation (Thermal and Hydro)

Monitoring and maintenance of Generating station

Centralized coal wagon tracking system (for Thermal Power

Plant)

Catchment area study of Hydro Projects

Sedimentation study of the reservoir of Hydro Projects

Identification of Glacial Lake to assess probability of Glacial

Lake Out Burst Flood (GLOF)

Real Time river water level observation and its telemetry

Disaster management during Earthquake

Construction material Survey – Identification of borrow areas

Potential Coastal site forUltra Mega Thermal PowerProject for CEA

Satellite remote sensingderived products

Landuse

Topography

Geology

Geomorphology

Transport Network

Environmental Impact Assessment StudiesHigh Resolution Satellite Data forInitial Environment Assessment

LU/LC map of proposedhydro-power

• Submergence area Analysis : Duimukh Hydropower Site

Sedimentation Study of Reservoirs

Slopes

Erosion Rate

Landuse Soil Texture

Use of Space Technology in NHPC Ltd

• R&D Division of NHPC has signed an MOU for Remote SensingBased Studies for Teesta-IV HE Project located in the State ofSikkim with NRSC Hyderabad .

• Scope of Study area is to Generate Spatial Layers onGeological Parameters, Land use, Soil and Topography usingMulti-Temporal Satellite Data and Assess the sediment Load inTeesta-IV HE Catchment Area through a Spatial Soil ErosionModel that will be calibrated & validated for Teesta-V HEProject

Effective use of space Technology inPower Sector

2. Power Transmission System Transmission Line Route Alignment and optimization of route - avoidingforest area / wild life sanctuaries and minimizing crossings like rivers,highways, railway lines etc.

Asset Management• Mapping of Transmission assets on GIS platform

Monitoring and Maintenance• Encroachment in Right of Way(ROW)

[Growth of vegetation, reduction in safety Clearance requirement,monitoring conductor & ground wire sag]

Effect of seasonal weather condition on Transmission asset Pollution Mapping River meandering / Soil erosion – a threat to tower foundations Disaster management - early restoration of Power Supply to the affected

areas Time synchronisation / time stamping of information /data

NER-Agra HVDC Line in BHUVAN

Brick Kiln mapping

Brick Kiln mapping

Brick Kilns Plotted on Bhuvan Satellite Image

Transmission Line in NER

BaliparaRanganadi

Misa

Bongaigaon

Line Routing using Bhuvan Land Use Land Cover Layer

Line Routing Using Waterways, Forest, Power line andRailway Layers

Transmission Line in NER- Flood Zones Overlaid

BaliparaRanganadi

Misa

Bongaigaon

NER Agra line in Bihar flood

Effective use of space Technology inPower Sector

3. Power Distribution System

Asset Management

Mapping of Distribution assets on GIS platform Effective Monitoring and Maintenance – enhanced customer

satisfaction by restoring the supply in a speedy way after thefaults (through use of effective communication system) – betterOutage management.

Disaster management - early restoration of Power Supply to theaffected areas

Time synchronisation / time stamping of information / data

EESL has used NRSC/Bhuvan’s Android based App for Asset Mapping

under their CCMS system wherein concerns about reception of accurate

satellite GPS signals in congested urban areas can be addressed.

Status/Action Taken

A detailed jointed survey was conducted by EESL and NRSC

representatives to identify the parameters of the mobile application

NRSC has provided mobile application to EESL and demonstrated

its application.

For better accuracy GAGAN system is used Mobile App of EESL

EESL

Use Case on how EESL has used Geospacial Technology i.e. GPSmapping of existing street light field assets at Kashi zone in Varansi

city

Effective use of space Technology inPower Sector

New Areas of Efforts• Hydro Sector

(a) Vegetation cover/Snow cover - Covers the important surfacefeatures of the area of interest.

(b) Shadows in deep gorges - Interior deep gorges are permanentlycovered by the shadows throughout the year and this hinder theapplication of Remote Sensing in such areas.

(c) Availability of More accurate and high resolution DEMs data forpreparing topographical plans at 0.5 m contour intervals to minimizethe dependency on ground survey for precise evaluation.• Bathymetric survey or under water survey in rivers and reservoirs

River Meandering View From Bhuvan Archive Satellite Data

Feb2009

Mar2013

Asset Database Remote Sensing Data

GIS

Pre-Disaster Data Post-Disaster Data

Warning Probable Locations Assets Involved

History Intensity Frequency

Accessibility Actual Location & Assets

involved Damage Assessment

Mitigation & Preparedness Restoration/Recovery Plans

Disaster Data

Disaster Management-Flow Chart

Decision Support System

Regular Updating with reference to Naturalcalamity/event

• Affected zones• Intensity• Frequency• History

Situated in disasteraffected zones

Exposed to highintensity disaster

events

Exposed to highfrequency of disaster

GIS Platform

Asset Database

Updated Satellite ImageGeo-tagging

Subjected to ROWencroachment

Remote Sensing Data

Filtering Assets/locations

Asset Grading Based on Vulnerability/ Risk Perception

Management Decision on Action Plan

Commercial Input• Risk of failure• Revenue Loss estimation

Technical Input• Design and

Engineering

Operation &Maintenance Input

Bhuvan Disaster Service for Chennai Flood 2016

Before Flood After Flood(Blue colour shows flood water)

Forest Fire location in BHUVAN

LiDAR Mapping of Assets captured throughLIDAR

IMAGES CAPTURED BY UAV

Pollution Deposits on insulators

Hotspots

Tower Detailing: Vector Data

Weather Map overlay over Power Sector GIS

Thank You

anand@powergridindia.com