Power Distribution
Todays deals on Power Distribution?
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SIEMENS 1500 KVA Unit Substation Line Power Distribution Transformer $32,000.00 |
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DC Power Distribution Assembly 3-424-1872A Rev A_34241872A_900L $5,000.00 |
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GE NEMA1 1600 AMP 120/208 VOLT POWER DISTRIBUTION BOARD $4,000.00 |
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EPE EP20/48T12 PDU Power Distribution Unit 75 KVA MGE $1,750.00 |
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SQUARE D USED MOTOR CONTROL CENTER / POWER DISTRIBUTION $1,200.00 |
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TRAFFIC CONTROL – POWER DISTRIBUTION ASSEMBLY – PDA#2 $1,600.00 |
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HP/Agilent E1135C Power Distribution Unit $999.00 |
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LEX Power Parallel Distribution Unit 100 amp 3 Phase DB100-TRN1002 Outdoor Use $999.99 |
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SCP POWER CONTROL CENTER AC DISTRIBUTION MODULE $999.99 |
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Asyst Power Distribution Box 9700-6209-01 working $1,000.00 |
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Russellstoll ERSFH8414FCG 60a 480v POWER DISTRIBUTION $999.99 |
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Radian 1R0420-1 25 KW Portable Power Distribution Panel Class L Connectors NICE $975.00 |
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ADEPT 30430-20000, PDU2, POWER DISTRIBUTION UNIT $849.99 |
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PRI Brooks Automation PDU TTR-200 Robot Power Distribution Controller TTR200 $699.00 |
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RSE-Sierra 200 amp temporary power distribution unit with transformer $500.00 |
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Blue Sea 8379 Power Distribution Panel 12/24 Volt DC Main + 20 Position w/ Meter $715.00 |
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Prime TPPC1000- 50 Amp, 125/250 Volt, Portable Power Distribution Center $680.99 |
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Giddings & Lewis Power Distribution Module 871-21292-00 $650.00 |
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AV Cabinet ETA PD11LVconditioned Power Distribution System Sharp XA-905 VHS $660.00 |
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AV Cabinet ETA PD11LVconditioned Power Distribution System Sharp XA-905 VHS $660.00 |
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ICORE I/O POWER DISTRIBUTION BOARD D20568-01 REVISION F $600.00 |
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Leviton PB101- 50 Amp, 125/250 Volt, Portable Power Distribution Center, Yellow $541.99 |
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Coleman Cable 01962-3R-02 Temporary Power Distribution Box, 50 Amp 125/250V $535.99 |
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MARWAY PRODUCTS MPD125 SINGLE PHASE POWER DISTRIBUTION UNIT 120VAC 24AMP 50-60HZ $549.99 |
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COOPER RhinoBox RB201A 50 Amp 120/240 Temporary Power Distribution Center K $549.95 |
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APC AP7902 AP 7902 Switched Pack PDU Power Distribution Unit $495.00 |
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MARWAY POWER AC DISTRIBUTION UNIT MPD 208A-127 MPD208A $481.34 |
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Power distribution box Electromate Allen Bradley Cutler Hammer HFD3080L NEW $500.00 |
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Power distribution box Electromate Allen Bradley Cutler Hammer HFD3080L NEW $500.00 |
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Power distribution box Electromate Allen Bradley Cutler Hammer FD35K NEW $500.00 |
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COLEMAN X-TREME POWER DISTRIBUTION BOX ROLL CAGE 01972 $455.00 |
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RiboTech Inc RT-10001, X9 Power Distribution Card $388.00 |
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VOLTEC Temporary Power Distribution Boxes Spider Boxes $370.00 |
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EGS AMICON PD34-1 CIRCUIT BOARD DRIVE POWER DISTRIBUTION PD341 $400.00 |
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Power Techniques *PT630* Power Distribution System $325.00 |
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TrueLogic Mass Spectrometer Power Distribution 90-503-B $302.25 |
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Adept PDU2 Power Distribution Unit 30430-20000 $299.00 |
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USED Kearney & Trecker 1-2129200 AC/DC Power Distribution Board $300.00 |
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NEW Emerson Liebert PD-HDWR-MBS Removable Power Distribution Box $300.00 |
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CEP 6506-GU Portable Power Distribution 3R Raintight Spider GFI Box UL1640 $274.95 |
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L5-30P to 4 x 5-20R Generator Power Distribution Cable – 75 Foot $239.95 |
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CEP 6706s Temporary power distribution center in mint condition $239.95 |
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Ferraz / Shawmut 600V Large Power Distribution Block $260.00 |
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HUBBELL POWER DISTRIBUTION SGFI-1PN SPIDER BOX $199.99 |
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GOULD SHAWMUT 68143, 3 POLE POWER DISTRIBUTION BLOCK $229.99 |
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GOULD SHAWMUT 68133, 3 POLE POWER DISTRIBUTION BLOCK $229.99 |
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GOULD SHAWMUT 68163, 3 POLE POWER DISTRIBUTION BLOCK $219.99 |
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48V Power Distribution Unit with Breaker Panel w/ Alarm Light – Commercial Grade $199.00 |
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Square D POWER DISTRIBUTION BLOCK- 9080LBA365208 $213.00 |
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ILSCO PDB-412-500-1 FOUR PORT POWER DISTRIBUTION BLOCK – NEW $199.95 |
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SQUARE D LBA265202 CLASS 9080 POWER DISTRIBUTION BLOCK $200.00 |
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HP 228481 252637 40A PDU POWER DISTRIBUTION UNIT CTRL $203.00 |
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FLUKE 7405A POWER DISTRIBUTION OPERATOR’S AID GUARANTEE $201.00 |
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X TREME BOX POWER DISTRIBUTION SPIDER BOX #01950 125/250 V ==GREAT CONDITION $200.00 |
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RU-MLD4 Microphone / Line Distribution Amplifier w/ Power supply Brand New $199.00 |
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24 MARATHON ELECTRIC 3 POLE POWER DISTRIBUTION TERMINAL BLOCKS 175 AMP #1423570 $179.99 |
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ALLEN-BRADLEY 1492-PD3C2127 SER. B 600V 760A POWER DISTRIBUTION BLOCK $159.95 |
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L5-30P to 4 x 5-20R Generator Power Distribution Cable – 50 Foot $159.95 |
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GOULD SHAWMUT 68152, TWO POLE POWER DISTRIBUTION BLOCK $169.99 |
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Automation Controls& Electric Power Distribution Center $100.00 |
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Buss 16372-3 POWER DISTRIBUTION BLOCK 3POLE 310A 600V $172.49 |
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Square D 9080-LBC165208 Power Distribution Block NEW-NO BOX $171.00 |
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110-240V 12V DC 3A 4 CH Mini Power Distribution Box UL $118.29 |
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NEW FOXBORO/INVENSYS I/A FIELDBUS POWER DISTRIBUTION UNIT P0904AU REV A W/CABLES $149.00 |
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100 PCS RT9701PB RT9701 SOT-25 Power Distribution Switches /FREE registered mail $163.99 |
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110-240V 12V DC 3A 4 CH Mini Power Distribution Box CE $116.47 |
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Gould Power Distribution Block 66632 600V (7340) $150.00 |
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ALLEN BRADLEY POWER DISTRIBUTION BLOCK 1492-PD3C263 $145.00 |
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ALLEN BRADLEY 50906 REV. 7 POWER DISTRIBUTION BOARD $150.00 |
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HP/Agilent 54855-66514 Power Distribution Assembly $99.00 |
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Allen-Bradley 1492-PD3287 Series B Power Terminal or Distribution Block New $148.50 |
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SEALED Square D LBA365212 Power Distribution Block $140.00 |
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ALLEN BRADLEY POWER DISTRIBUTION BLOCK~1492-PD3C263~NEW $125.00 |
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NEW GOULD SHAWMUT 68151 POWER DISTRIBUTION BLOCK $124.99 |
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1 DIGITAL 874-D POWER DISTRIBUTION UNIT O3-2 $115.00 |
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COOPER BUSSMAN 16376-3 POWER DISTRIBUTION BLOCK 600V 3 POLE 840A H4400119 B $125.00 |
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NEW FERRAZ GOULD SHAWMUT 66113 POWER DISTRIBUTION BLOCK $120.00 |
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Challenger Power Master Dry Type Distribution Transformer Cat No. 757-310-MOD.5 $125.00 |
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1 BUSS 16421-3 POWER DISTRIBUTION CENTER M6-2 $110.99 |
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NIB GENERAL ELECTRIC CR151KDC20HB POWER DISTRIBUTION BLOCK 175AMP 3POLE 600V $114.95 |
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PDB-11-500-3 ILSCO POWER DISTRIBUTION BLOCK 3P 500MCM-4 TERMINAL AL9CU-600 VAC $114.95 |
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Ilsco Power Distribution Block Part # PDB-26-350-3 $120.00 |
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SQUARE D – 9080 LBA364108 POWER DISTRIBUTION BLOCK – BRAND NEW! $119.99 |
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Eaton / Pulizzi ePDU PC5585-CF1/MTD Power Distribution Unit 14-Outlets 5.76kW $97.98 |
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MARWAY MPD 411235 AC POWER DISTRIBUTION UNIT COMPAQ S/N 154845-001 $100.00 |
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ILSCO PDB-212-4/0-2 Power Distribution Block $99.99 |
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TELECT Power Distribution FUSE PANEL 009-0004-1001 8T69 48V 50A **TESTED** $99.95 |
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HARRIS 10570-0795-01 MODIFICATION KIT,ELECTRIC POWER AND DISTRIBUTION EQUIPMENT $107.99 |
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Ferraz Shawmut 69313 3 Pole Power Distribution Block $99.00 |
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COOPER Bussmann 16321-3 Power Distribution Block 3-pole $98.95 |
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Ferraz Shawmut Gould 68163 Power Distribution Block $100.00 |
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Fluke 7405A Power Distribution Operators Aid Keyboard $99.99 |
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NEW FERRAZ GOULD SHAWMUT 68173 POWER DISTRIBUTION BLOCK $90.00 |
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MARATHON 1433555 600V 350A POWER DISTRIBUTION BLOCK $70.00 |
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New Buss Bussman 16528-2 Terminal Power Distribution Block 840A-600 Volt $95.00 |
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NSI INDUSTRIES AL-P2-P2/ALP2P2 MODULAR POWER DISTRIBUTION BLOCK ***NIB*** $94.00 |
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Gould Shawmut 69133 Power Distribution Block $90.00 |
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Gould Shawmut 69143 Power Distribution Block $90.00 |
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ILSCO POWER DISTRIBUTION TERMINAL BLOCK MODEL PDB-112-350-3 $91.99 |
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Gould Shawmut 62192 Power Distribution Block 600V 4@ $89.99 |
Power Distribution Questions
Leveraging GIS application in Power Distribution Sector
Introduction
The Power Distribution Companies (DISCOMs) constantly need to update their consumer data and the corresponding electrical network attributes. The consumer database has to be indexed and show the relevant linkages with the Distribution Transformer (DT), Feeder and Substation. All the important attributes of the consumer (Consumer ID, Division Code, Service Connection Number, Address, Meter details, Network details, Contact details, etc.) need to be maintained in the database. The information of the consumer’s network connectivity is also maintained in the database. The consumer database is mapped with network or assets database for defining the consumer’s electrical connectivity.
GISis a handy tool for maintaining consumer database and graphically depicting the consumer’s electrical connectivity on a digital map, using a GUI interface. The entire electrical network can be overlaid on a GIS base map or satellite image having sufficient resolution to identify the network element. Using the GIS application, when a particular DT is selected, then all the LT lines connected to that DT and consumers connected to respective LT line can be displayed. The software generates a color graphic map of the distribution network with the facility for zooming, resizing and scrolling.
Prerequisites of GIS application development
It is important to emphasize that door-to-door GPS survey helps not only in geo-referencing and digitally mapping the electrical consumers on a GIS map, but also identify the source from where electricity is supplied. Each consumer is allotted an alphanumerical code that would uniquely identify the Division, Subdivision, Substation, Feeder, Load category and eventually the Distribution Transformer to which the consumer is connected. The purpose of GIS application is to index all the consumers and categorize the complete consumer database with respect to their unique electrical address.
This exercise also helps the distribution utility in detecting unauthorized connections, fictitious (ledgerized but non-existent) connections or connections that are existent, but not ledgerized. Thus, the GIS mapping and indexing of consumers helps in determining the factual position of the electrical connections on the ground.
Another key requirement of a successful GIS implementation is the seamless integration of spatial data with other utility application databases viz. Customer Information System, AM/ FM, Utility Billing, Trouble Call Management, etc. The GIS application must stitch together other utility applications on a common fabric for cross-application portability of data.
Key functionalities of GIS application in Power Utility
GIS application covers the whole gamut of Power Utility operations. Some of the key functionalities of GIS application allow management and tracking of Utility field assets, Operations management and Work management as enumerated below:
Asset Management
Spatial Network Data Management
Asset specifications Mapping
View/Query/Analysis
Network Mapping
Operations Management
Outage Management System
Resource Management
Mobile Workforce Management
Customer Information Management
Single Line Diagrams
Work Management
Network Design/ Plan Layout
Network Laying/ reconfiguration
Cost Estimate preparation
As-Built Field Updates
Load planning and forecasting
4-step Digitization Process
The digitization of electrical network assets, consumer indexing and network mapping is a 4-step process, as explained below:
- GPS survey of electrical consumers and network assets
- Door-to-door survey, identifying all consumers and their service connections
- Preparation of GIS base map overlaid on the satellite imagery
- Digitization of electrical network assets (33 KV Substation, 11 KV Feeders, DTs and electric poles)
- Use of differential GPS to establish geo-coordinates with acceptable accuracy
- Establishing their electrical connectivity with respect to the Pole, DT, Feeder, Substation
- Matching the survey data with the utility’s ledgerized commercial records
- GIS mapping, indexing and codification of electrical consumers and network assets with defined electrical relationships
- Collecting and updating data for every consumer with respect to DT, including additional information viz. condition of the meter, load type, sanctioned load, connection status, phase details, etc.
- Identifying fictitious connections, i.e. those that exist in the ledger but physically non-existent
- Interoperability and data portability among GIS and other utility software applications (Fig. 2)
- Customer Information System
- Asset Management/ Facility Management
- Trouble Call Management System
- Utility Billing and Energy Accounting System
- Load Flow and Load Growth studies
GIS applications in Power Distribution
Availability of accurate GIS-based distribution network map showing the geo- coordinates and network configuration is an important prerequisite for analysis, planning, optimization and load flow studies. Using GIS application, all network assets (HT/ LT Feeders, DTs, Poles) can be indexed with respect to a well-defined alpha-numeric code, which uniquely identifies the particular network element (Fig. 3). The coding is based on a structured pattern which allows the insertion of new components into the system. This coding also facilitates quick sorting and mapping of the network element on the GIS map.
The GIS application is GUI-based and facilitates on-line query with a graphic display of network section, showing the particular network element and also the corresponding network information on the pointer tool-tip. The GIS application also displays the geographical location of all consumers, their electrical connectivity and associated technical parameters, on query.
When integrated with the Customer Information System (CIS), it provides compete information of the consumer on the basis of the unique identification code – the Consumer Index Number (CIN). The CIN in turn identifies the DT, Feeder and Substation through which the consumer is supplied electricity. This information is of great help in Energy Audit, Trouble Call Management, Asset Management, Load Management, Network Planning and analysis.
Checklist for successful GIS implementation
Proper GPS survey and creation of an accurate digital base map for the distribution network are essential prerequisites for successful GIS project implementation. GPS survey requires a GPS Base Station at a pre-determined location, aided by adequate number of GPS Rovers/ Receivers. Surveyors walk along the HT and LT feeder with a GPS Rover/ Receiver and capture the spatial position of the Pole, DT, Feeder and Sub-station and heavy consumers. GPS Base Station and Rovers provide the desired accuracy after differential correction.
The attribute data of the distribution network (DT and Conductors) is also collected in the process, such conductor make, type and size, DT make, type, impedance and capacity, etc. Differential correction has to be performed on the spatial data thus captured.
The digital base map must show the important landmarks like Roads, Rivers etc. which is necessary for easier identification of network assets and plan new distribution network. For better visualization, the vector map of the network can be overlaid on the base map or even the satellite image.
The latitude and longitude (spatial data) of important landmarks or control points must also be captured using the GPS instrument. The GIS application must be able to stitch together contiguous maps sections on the same scale into a continuous mosaic.
Conclusion
GIS provides a wide range of solutions encompassing the entire business value chain in the power distribution sector – from setting up distribution network and load management to customer information, assets management, billing and customer services. However, the interfaces between GIS and other utility software applications should be well-defined.
GIS application must be designed to integrate seamlessly with other utility business applications. Continuous updation and monitoring of data is critical in any GIS application. Therefore, for any GIS application, it is important to have in-built process control checks, audit trail and exception reporting facility to ensure reliability and accuracy of data.
About the Author
Mr Jayant Sinha is an engineering graduate from BITS, Pilani with over 24 years experience in the Power Sector. He is an Accredited Management Teacher (AMT) with IT specialization, a Certified Network Professional and holds PG specialization in Operations Management.
He has served in various NTPC Power Stations at Badarpur, Rihand, Dadri and Auraiya, executing several key projects in control systems and process automation including SCADA, DDC/ MIS, Real-time expert systems and core IT applications for the Power Sector. He was awarded meritorious service award at NTPC, Dadri.
He has also worked in Uttarakhand Power Corporation Ltd. as the Head of IT department where he was involved in the planning, process engineering and development of IT systems for power distribution automation and implementation of IT initiatives under APDRP. He is currently working in Spanco Ltd., Mumbai and responsible for implementing IT projects for Power Distribution Sector.
His papers have been published in leading power/ computer journals and presented papers in national/ international conference on various IT topics related to the power sector, viz. GIS, AMR, SCADA, Smart Grid, etc. .
Power Distribution Videos
VBar 101 – Episode 5 – Power distribution
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