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WAPDA's telecommunications: world's largest power utility integrated system.

Wapda's Telecommunications World's Largest Power Utility Integrated System

Wapda in the last thirty years, has been the prime mover in the advancement of overall development of Pakistan with its dedicated nation building efforts. It has emerged as the largest employer of manpower with almost 160,000 technical and non technical personnel on its role. On Power side, as the responsibilities of generation, transmission and distribution of power grew with the passage of time, efforts, have been made to improve to attain maximum efficiency in the flow of generation and distribution spread all-over Pakistan. Maintaining , effective means of communication with a large number of power stations, grid stations and distribution centres is a prerequisite for efficient working of any countrywide power system like the one being looked-after by Wapda. This responsibility is being effectively performed by Wapda's Telecommunication's Department in the last 30 years.

Since its inception in 1959, the Telecommunications Department have been striving hard to meet the growing challenges and responsibilities with the ever increasing growth of Wapda. The back bone of Telecommunications network had been the power line carrier communication. This network simply had 8 PLC stations in 1962 which have increased to 308 PLC stations uptill now. In addition to PLC network, 44 microwave stations, 23 UHF radio links, 6 telex exchanges, 81 stored programmes control exchanges and 38 remote terminal units have been added to Wapda National Grid. According to International Telecommunication Agencies and Organizations Wapda has now the largest integrated independent Telecommunications system in the world.

Wapda now has the most modern communication system in the world having a 2 GHz, 60 channels independent microwave system from Islamabad to Jamshoro, PLC communication facilities to more than 308 grid stations and power stations all over Pakistan as well as new telex facilities to 19 important centres in Pakistan. All the four provinces as well as Azad Kashmir have now been integrated on independent power line carrier communications network.
Province 66kv 132kv 220kv 500kv Total
Punjab 13 144 11 2 170
Sindh 6 46 2 3 57
N.W.F.P. 19 21 1 1 42
Balochistan 4 21 1 -- 26
Azad Kashmir 5 8 -- -- 13
 Total:- 45 240 15 6 308


Wapda's Telecommunications systems have provided speech, teleprotection, telex, remote control, tele-metering, tele-indicating and other highly intricate facilities to the National Grid System for efficient control and effective management of electrical energy. Wapda network now has the most modern technical facilities including: a) Auto dialling for both on distances and local calls. b) Instant access to National and RegionalControl Centres and all major grid stations and power stations of Pakistan. c) Dedicated links and priority facilities to predetermined subscribers. d) Real time functioning and monitoring of grid and generation system. e) Predetermined economical loadshed ding during emergencies. f) Automatic load frequency control and protection of transmission lines. g) Operational flexibility by providing alternate routes, software controlled test and diagnostic system and dual configuration of equipment. h) System availability upto 99.9 per cent.

The independent dedicated telecommunications network throughout Pakistan has been tailor-made in accordance with the operational requirements of Power Telecontrol System of Wapda. The network has been renovated, extended and augmented and brought in line with the most modern systems of the world. In the last three years about 150 engineers and technicians have been trained in Norway, Sweden and Switzerland to take up new high-tech responsibilities in the field of communication and Power Control Despatching System.

Northern areas including Kunhar Valley stretching from Bhasa Naram, to Kala Bagh has a vast potential of more than 20,000 MW hydel power which is yet to be explored. In southern areas another 10,000 MW of Thermal Power going to be added to the National Grid by the turn of the century. With the National telecontrol centre at Islamabad and two Regional Centres in Islamabad and Jamshoro, Wapda now is fully capable to control the flow of electrical energy from North to South and vice-versa with maximum efficiency and effective management to face any challenge in the nineties. With few more regional centres in other parts of Pakistan, Wapda will be fully geared-up for effective control of flow of power upto year 2010.

Mian Saleem Hasan, G.M., Telecommunications, Wapda
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Copyright 1991 Gale, Cengage Learning. All rights reserved.

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Title Annotation:Pakistan's Water and Power Development Authority
Author:Hasan, Mian Saleem
Publication:Economic Review
Date:Mar 1, 1991
Words:705
Previous Article:Karachi Electric Supply Corporation.
Next Article:Electric energy conservation and load management.
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