Lahore, April 13, 2015 (PPI-OT): Engineers of National Transmission and Despatch Company Limited (NTDCL) has replaced and energized (3x37MVAR) single phase Shunt Reactors at 500 kV grid station Dadu, today. Which controls the High voltage and prevents system from Breakdowns, Tripping and total failure.
Due to Ferranti effect voltage increases at the receiving end on 500 kV Grid Station Dadu upto 590 kV and causes tripping and system failure. One already damaged shunt reactor was also repaired and installed at 500 kV Grid Station Dadu.
The shunt reactor was shifted from 500 kV Nokhar grid station District Gujranwala through heavy transport. NTDC teams of Grid System Operations (GSO), System Protection and Technical Services Group (TSG) participated in operational, repair and maintenance work.
The spokesman further said that during last week, two tower Nos. 340 and 341 of 500 kV Guddu-Dadu Circuit-I transmission line collapsed due to hail/thunderstorm and heavy rains in Shikarpur area, The damaged towers were of old and were installed in 1986. The replacement of such type of towers at the site in Shikarpur were not available. Which were later shifted from Multan warehouse and erected after modifications made on ground.
Managing Director NTDCL Engineer Muhammad Arshad Chaudhry lauded the efforts of NTDCL Engineers who managed to complete lengthy process of repair and maintenance of shunt reactors and erection of damaged towers within 15 days of their hard work.
For more information, contact:
Lt Col (R) Rana Sajjad Ahmad Khan
Director Media and PR, NTDCL
National Transmission and Despatch Company Limited (NTDCL)
221 WAPDA House Lahore, Pakistan.
Tel: +92-42-99201020, +92-42-99202211 Ext: 2286