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Feasibility Study Report Of Existing 11kV Transmission Line from Lakwa GGS- I to Lakmani GGS - IV for catering the Existing and Proposed additional loads

Megha Engineering & Infrastructure Ltd.
S-2, Technocrat Indl. Estate, Balanagar, Hyderabad-500037,

February-2013

Power Research and Development Consultants Private Limited
No 5, 11th Cross, 2nd Stage, West of Chord Road, Bangalore - 560086, Karnataka, INDIA. Ph: +91- 80-42455555, FAX: 23192210, E-mail – prdc@vsnl.com, Web site: www.prdcinfotech.com

Load flow Analysis – MEIL

Feb – 2013

Document reference details:
Purchase Order details • SREE-MEIL-VNGS/PRDC/ARP/WO/HYD4/02/328 dated 17-12-2012.

Document reference No. • PRDC/2012-2013/MEIL/1811

Revision Index: Revision Description Date Remarks Based on the data collected during site visit.

0

Draft report

04.02.13

Project Team: Prepared by Mr. Harsha Vardhana BS Mr. Kiran Kumar S Mr. Jagannatha Gupta 04.02.13

Reviewed by

04.02.13

Approved by

Mr. T.Gurucharan Das

04.02.13

Power Research and Development Consultants Pvt. Ltd.

1

Load flow Analysis – MEIL

Feb-2013

EXECUTIVE SUMMARY
1.0 ONGC have established a 11 kV transmission line stated to have been 30 years old for Power evacuation from 3X3 MW Captive generation plant at Lakwa GGS-I to cater the loads to Lakmani-GGS-IV, ONGC colony, Oil Pumps and nearby villages. 2.0 The 11kV Transmission line particulars as per the GPS survey conducted by are as furnished in the below Table PRDC

11 kV Transmission Line particulars Conductor details Sl No Type of line supports Length in kms Aluminum No of strands/ dia in mm 6/2.425 6/4.4 Steel wire Total No of aluminum Strands/ area in dia in Sq mm mm 1/2.52 1/4.43 27.72 91.24 D.C.resista nce in at 20°C Current Carrying Capacity in Amps at 65°C 102 260

Particulars

1 2 3

Trunk line Spur line Total line length

9.5 Mtrs Steel Tubular poles

12.048 15.597 27.645

1.162 0.337

3.0 Load Details
3.1. The abstract of DTCs connected on the feeder are furnished in the Table below: Distribution Transformer centers of various capacities connected to the feeder Sl No 1 2 3 4 5 6 7 DTC Capacity in kVA 50 63 100 200 500 750 Total Numbers 1 6 20 2 5 2 36 Total Capacity of DTCs kVA 50 378 2000 400 2500 1500 6828

Power Research and Development Consultants Pvt. Ltd.

2

Load flow Analysis – MEIL

Feb-2013

3.2. The abstract of loads on the feeder are furnished in the Table below: Table No-7.3: Abstract of Type wise Loads connected on the 11 kV feeder Sl No 1 2 3 4 DTCs Type of Loads Exclusive ONGC Loads such as Group Gathering station loads at GGS-IV & GGS – VI ONGC water injection plant ONGC Colony Loads near Gate No-2 ONGC Exclusive Oil Well loads No's 2 2 1 2 3 1 2 5 ONGC oil well and Village loads 9 1 6 7 8 Colony & Village loads Exclusive Village loads Total 1 7 4 1 36 kVA 750 500 500 500 100 63 200 100 63 100 100 63 50 Total kVA 1500 1000 500 1000 300 63 400 900 63 100 700 252 50 6828 4402 892 Computed with PF 0.89 89 Computed with PF 0.89 1213 Computed with PF 0.89 Connected loads in kW's 990 445 450 323 Remarks

Actual connected loads Computed with PF 0.89 with PF 0.89 Computed with PF 0.89

4.0 Load flow studies for the existing loading conditions:
4.1 The load flow studies using Mi-power / Mip-dap soft ware were conducted by duly modeling the network details prepared by GPS survey & geographical diagram and load details to assess the following: a) b) c) d) The loading of Active & Reactive loads and Amps in each segment. The over loaded segments of the net work. The voltages at each Bus of the net work. The Peak power losses in KWs

4.2. The load flow studies were conducted for the case-1 existing loading condition: a. Case-1: Load during peak – 4402 kW The existing connected loads of 990 KW in Group Gathering station of GGSIV & GGS – VI and the 100% existing capacity of all the remaining 32 DTC with PF as 0.89 5.0 Load flow studies for the...
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