ASHUGANJ Power Station Company LTD

Abstract

In order to fulfill the partial requirements of B.Sc in EEE, we have chosen the Industrial attachment or internship. We have done our internship at Ashuganj Power Station Company Ltd (APSCL). Our major area is Power. So as Power Engineers, power stations are related to our field. In order to thoroughly understand the role of power sector in Bangladesh, the general electricity production, distribution and transmission system in the country must also be taken into account. The purpose of this report is to give a brief description about what we have learned and visited in the power station. In this regard we have ventured into history and have followed some significant data collected from APSCL. APSCL has 9 units with installed capacity of 777 MW. APSCL fulfills about 15% of power requirements of the country. Unit 1 and 5 are for steam power plant, unit 6 and 7 are gas tubine-1 (GT-1) and gas turbine-2 (GT-2), unit 8 is gas engine and unit 9 is combined cycle plant. Unit 1 and 2 produce 64 MW each, unit 3, 4 and 5 produce 150 MW each, unit 6 and 7 produce 56 MW each, unit 8 produces 50 MW and unit 9 produces 34 MW. Sub-station of APSCL plays a vital role for power distribution. Different kinds of transformers are being used to step up or step down voltage produced by the generators. Isolators, feeders, breakers are main equipments of sub-station. For protection purposes several switchgear and control equipments are present there. During this internship our theoretical knowledge was verified to the practical field of power system. Our mentor has helped as a lot by giving us the proper introduction about the plant and we have observed different systems and devices under his observation. The systems or the devices that were observed during the internship include generator, boiler, water treatment plant, steam turbine, gas turbine, compressor, backup system, sub-station equipments, such as, power transformer, current transformer, potential transformer, protective relays, circuit breakers, insulator, lightning arrester and other essential equipments of the APSCL. In this report the main emphasis is on the explanation about generators along with the knowledge about power generation, transmission, maintenance and distribution system at APSCL. It is expected that in the future this practical knowledge will enhance our potential to grow up in power industries.