GIS Projects

Some of our recent GIS Projects

Project 1: GIS enabled Transmission line survey & mapping in WBSEDCL

About WBSEDCL:

West Bengal State Electricity Distribution Company Limited (WBSEDCL) was established in 2007 following the unbundling of the state electricity board of West Bengal and responsible for providing power to 96% of West Bengal with a customer base of more than 1 crore across the state.

Synopsis of the Project: 

  1. AOI fixation & Image Preparation: At first we did GCP points collection in AOI boundary with the help of WBSEDCL personnel substation Wise.
  2. Land base Preparation: In geo referenced image , our digitization team prepared a detail map including following layers Major road, Minor road, Water bodies, Forest, Vegetation, Vacant Land, Railway Line & other major settlement.
  3. Substation Asset Audit: In field survey, at first we started with electrical data collection (Like CT, PT, CVT, Circuit Breaker, Isolator, Switch, Relay, and Lighting Arrester etc.) in each Distribution Substation /Switching Station in WBSEDCL jurisdiction. We have prepared SLD of each substation with proper electrical connectivity & geo-location as per ground trothing.
  4. 11 KV& associated 220V & 440V LT Lines Survey: Our field survey team did Distribution line DGPS survey (11KV & associated 220V & 440V LT Lines voltage class) by collecting all Poles, DTR & Feeder data with attribute as defined in SRS.
  5. Distribution Line Mapping: After completion of field survey, we have prepared feeder wise connectivity map in shp,kml format. This map contains entire non spatial details of each Substation, Feeder, Pole& DTR with their geo-position (± 5 meter accuracy).
  6. QGIS enabled interactive map preparation: After completing entire electrical map (with land base), we transfer that shp into kml format. Provided the data with QGIS open source software. We have installed QGIS software in WBSEDCL Data Center Server. Integrated Open Layer Plugin in QGIS software to open BING & GOOGLE as Base Map.

We have worked for 11KV Feeders emanating from following Substations: 

  • Baishnabnagar Substation under South Malda Division WBSEDCL
  • Bhadrapur Substation under Rampurhat Division WBSEDCL
  • Jalangi Substation under Domkal Division WBSEDCL
  • Pachami Substation under Suri Division WBSEDCL
  • Chanchal Substation under North Malda Division WBSEDCL
  • 2 Feeder Of Samsi Substation under North Malda Division WBSEDCL

Project 2: GIS enabled Transmission line survey & mapping in DVC 

About DVC: 

Damodar Valley Corporation (DVC) is public company which operates several power stations in the Damodar River area of West BengalIndia. The company operates both thermal power station and Hydel power dams under the Indian Ministry of Power. The dam is built in Rondia, a village in the district of Burdwan and DVC is headquartered in the city of Kolkata, West Bengal, India.

With the time DVC developed and expanded its infrastructure six thermal power stations, three hydro-electric power stations with a capacity of 144 MW and one gas turbine station with a capacity of 82.5 MW contribute to a total installed capacity of 6357.3 MW. Presently DVC has 41 sub-stations and receiving stations more than 5500-circuit km of transmission and distribution lines. DVC has also four dams, a barrage and a network of canals that play an effective role in water management. The construction of check dams, development of forests and farms and upland and wasteland treatment developed by DVC play a vital role in eco conservation and environment management.

Synopsis of the Project:

We have carried outGPS Survey of each of the Tower of 400kV, 220 KV, 132 KV and 33KV Transmission Lines & its connected sub stations comprising of approximately2000 Towers, Landmark, Substations and Receiving Stations and co-ordinates of Switch Yard, Control Rooms of Substation and Receiving Station in Jharkhand and in West Bengal.For every substation and Receiving station photo of Substation, control room and switch yard was done. SLD& Layout was collected from each Substation and Receiving Station.

While doing survey, surveyor noted the mark no written on towers where the same isavailable.Predefined Data structure is available for Tower, Feeder and Substation. For attribute in tower layer some data was collected from field and some from Substation in charges. For Feeder and Substation attribute, data was given from respective Substations. Surveyors walked along each locations of transmission lines with a GPS rover & captured the co-ordinates of the location (Tower). Wherever the line crosses another power line, Railway line, Express highway, National Highway, we have recorded co-ordinates on the points of crossing, wherever line route passes over permanent land marks.

Co-Ordination with DVC: During the Physical survey, the concerned officer of the end client related to the concerned line being surveyed has guided us for identification of the Towers nearby to the entry / exit of the line from the respective Sub Station. The intermediate Towers where only one line is there, we have completed the survey based on the guidance provided by the concerned officer of the end client. Wherever multiple lines are combiningor crossing, the officer of the end client guided us for identification of each of the Tower of each of the Lines, as perthe timing schedule. We have kept continuous liaisioning with the concerned officer of the end client so that he is available for providing guidance for identification of theTowers. We have provided all the details of the Transmission Lines surveyed and the contact details of the respective officers of the end client of the respective linesso that maximum co-ordination can be achieved and the survey can be completed without any errors and in the stipulated time.

We kept  the  Engineer  informed  in  advance  regarding  this  field  activity  plans and scheduled for carryingout each part of the works.

Final Deliverables: We Delivered the final data in shp format & repots in MS-Excel Format.

Project 3: GIS enabled Transmission line survey & mapping in GOA Electric Division 

About GED:

Government of Goa Electricity Department was created as a Govt. Department in the year 1963. The Electricity Department is the only licensee in the state of Goa for transmission and distribution of Electrical Energy.

Synopsis of the Project: 

  1. AOI fixation & Image Preparation: At first we did GCP points collection in AOI boundary with the help of GED personnel substation Wise.
  2. Land base Preparation: In geo referenced image , our digitization team prepared a detail map including following layers Major road, Minor road, Water bodies, Forest, Vegetation, Vacant Land, Railway Line & other major settlement.
  3. Substation Asset Audit: In field survey, at first we started with electrical data collection (Like CT, PT, CVT, Circuit Breaker, Isolator, Switch, Relay, and Lighting Arrester etc.) in each Distribution Substation /Switching Station in GED jurisdiction. We have prepared SLD of each substation with proper electrical connectivity & geo-location as per ground trothing.
  4. 11 KV & associated 220V & 440V LT Lines Survey: Our field survey team did transmission line survey (11KV& associated 220V & 440V LT Lines voltage class) by collecting all Poles, DTR& Feeder data with attribute as defined in SRS. We have collected geo-location of each tower using handheld GPS device.
  5. Transmission Line Mapping: After completion of field survey, we have prepared feeder wise connectivity map in shp, kml format. This map contains entire non spatial details of each Substation, Feeder & Tower with their geo-position (± 5 meter accuracy).

We have worked for 11KV Feeders& associated 220V & 440V LT Lines emanating from following Substations: 

  • ThivimSubstation
  • Morjim Substation
  • Pernem Substation
  • TUEM Substation
  • Valpoi Substation

Project 4: Implementation of Geographical Information System (GIS) Solution to Map the OFC Cable Network. 

About NFS:

A dedicated communications network the telecom department is setting up for the defense forces – in lieu of airwaves vacated for civilian use – is expected to be completed in Rajasthan, Uttarakhand and Uttar Pradesh.The nation-wide implementation agency for the project, called Network for Spectrum (NFS), is Bharat Sanchar Nigam Ltd. The armed forces vacated a part of their airwaves after assurances from the Ministry of Communications and IT to create a network for their exclusive use. In 2012, the Cabinet cleared a proposal to lay 57,015 kilometers of Optical fiber. The country is divided into seven regions to carry out the project.

The project is crucial since the armed forces will migrate all their communication needs to this optic-fiber network and free more bandwidth for commercial telephony services.

Telecom Consultants got the contract for procurement, trenching, laying, installation and maintenance of 9,568 kilometers of optic-fiber cable in Rajasthan, Uttarakhand and Uttar Pradesh for Rs 1,448 crore. It quoted another Rs 552 crore to maintain the network for 10 years. BSNL, the implementation agency for India’s Defence NFS (Network for Spectrum) optical fiber cable (OFC) project has finalized vendors for all seven packages. Sterlite Technologies bagged Package A, Vindhya Telelinks bagged Package B, TCIL bagged Package C, L&T Construction bagged Package D and Package E and ITI bagged Package F and Package G.

Synopsis of the Project: 

The Documentation Consisting of the following shall be prepared Node to Node for NLD routes as well as well as for access network routes. GCP Points will be taken for:

  1. Route Index Diagram.
  2. As Built Diagrams: The ABD shall be an essential part of the documentation process and shall ensure easy maintenance of the OFC Route. The ABD shall be prepared for each route.
  3. The ABD will contain the following Details:
    • Cable details
      • Make and Size Of the Cable.
      • Identification Of Cables Drums Deployed.
      • Test Reports
    • Joint Details
      • Location of Joint Chamber (Latitude & Longitude details in decimal Degree Format upto eight decimal places).
      • Depth Of Joint Chamber Covered from Ground level.
      • Details of Cable slack left at each joint chamber.
      • Splice Loss Details.
    • FDMS Details
      • Details of FDMS deployment.
      • OTDR measurements for each fiber terminated at FDMS.
      • Fiber Connectivity Details
    • Route Marker Details
      • Location Of Cement/ Electronic Route Marker (Latitude & Longitude details in decimal Degree Format upto eight decimal places).
      • Route Marker Identification Details.
    • Optical Test Results
      • OTDR readings.
      • Light Source Power Meter Readings.
      • Chromatic Dispersion Measurement readings.
      • Optical test results for each fiber shall be furnished.
      • OTDR settings to include wavelength, pulse width and average time shale also be recorded.
      • Bi-Directional OTDR readings shall be furnished for each Joint Closure.
    • OFC Alignment Details
      • Offset Of Cable from Centre Of the Road at Every 10 Meters.
      • Details Of Crossing (road/rail/nalaetc) should be provided.
      • Depth profile of Cable at every 10 meter interval.
      • Details of protection with type of protection.
      • Location Of Culvert and bridges with their lengths and scheme of laying of HDPE/PLB pipe thereon.
      • Important landmarks to facilitate locating the cable in future to future to include culverts houses, petrol pumps, schools etc.
      • Location of Joints & Manholes.
      • Cement and Electronic Route Marker.
      • The OFC alignment details shall be provided at multiple Levels Of Details(LOD) to facilitate section wise identification of route. While one Sheet shall contain the entire link the LOD would gradually increase to up to 400m on a single Sheet.
      • Diagram shall Consist of Cable Route Details on Geographical Map drawn to scale with prominent Land Marks and alignment of cable with reference to road.
      • Indexing and referencing of the diagrams shall be made to provide easy identification of route details.
    • Land Marks along Routes
      • All important landmarks for verification along the OFC route corridor would be recorded as part of the ABD. The corridor would include all verifiable landmarks upto 25m on each side along the center line of road.
      • All landmarks recorded as part of the ABD would be provided along with accurate lat long details in decimal degree upto eight decimal places.
      • The Broad category of landmarks to be recorded would be as given below:
  1. Culverts
  2. Bridges
  3. Important Building footprints.
  4. Road Features.
    • ABD shall provide the basis for carrying out GIS mapping of the entire OFC Route alignment. The GIS details required to be recorded as part of the ABD shall be measured using DGPS system providing sub meter level accuracy and Total Stations. Reading recorded through these systems would use accurate control stations and shall be digitally corrected by using appropriate software. ABD shall be generated using CAD tool(s).
    • Accuracy of details provided as part of the ABD will be very critical for successful implementation of the GIS based Optical Fibre NMS being procured througha separate tender.
    • All the diagrams shall bear the signatures of the contractor and project manager as a proof of accuracy of the details. The diagrams shall be bound in A4 size books with cover. The cover sheets shall be laminated and should have the following details:
  5. Name Of the Project Organization.
  6. Name Of the OFC Link with ID.
  7. Name Of the contractor.
  8. Name Of BSNL Representative as part of Acceptance test.
  9. Name Of PICG Representatives as part Acceptance test.
  10. Date Of Commencement of
  11. Date Of Completion Of Work.

 

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