INDUSTRIAL TRAINING REPORT.doc (Size: 1.49 MB / Downloads: 679)
NTPC was set up in the central sector in the 1975 in response to widening demand & supply gap with the main objective of planning, promoting & organizing an integrated development to thermal power in India. Ever since its inception, NTPC has never looked back and the corporation is treading steps of success one after the other. The only PSU to have achieved excellent rating in respect of MOU targets signed with Govt. of India each year.
NTPC has an installed capacity of 19,291 MW from its commitment to provide quality power; all the operating stations of NTPC located in the National Capital Region & western have acquired ISO 9002 certification. The service groups like Engineering, Contracts, materials and operation Services have also bagged the ISO 9001 certification. NTPC Dadri, Ramagundam, Vindhyachal and Korba station have also bagged ISO 14001 certification.
Today NTPC contributes more than 3 / 5th of the total power generation in India.
The development of the sector in the country, since independence has been predominantly through the State Electricity Boards. In order to supplement the
effects of the states in accelerating power development and to promote power development on a regional basis to enable the optimum utilisation of energy resources, the Government of India decided to take up a programme of establishment of large hydro and thermal power stations in the central sec tor on a regional basis. With this in view, the Government set up the National Thermal Power Corporation Ltd., in November 1975 with the objective of planning, construction, commissioning, operation and maintenance of Super Thermal and Gas Based Power projects in the country.
The availability of gas in a large quantity in western offshore region has opened an opportunity to use the gas for power generation, which is an economical way and quicker method of augmenting power generating capacity by natural gas as fuel in combined cycle power plant in a power deficit country like ours. With this intention in mind the Government asked NTPC to take up the construction of Kawas, Auraiya, Anta, Dadri and Gandhar Gas Power Project along the HBJ Gas pipe line.
The power plant consists of gas turbine generating units waste heat recovery boilers, steam turbo generator, ancillary electrical and mechanical equipments. The power generated at this power station is fed over 220 KV AC transmission system associated with this project to distribute the power in the various Regions.
In the Power Sector, gas turbine drive generators are used.
Gas turbines range in size from less than 100 KW up to about 140.000 KW. The gas turbine has found increasing application due to the following potential advantages over competive equipment.
• Small size and weight per horsepower
• Rapid loading capability
• Self-contained packaged unit
• Moderate first cost
• No cooling water required
• Easy maintenance
• High reliability
• Waste heat available for combined cycle application.
• Low Gestation Period
• Low Pollution Hazards
The function of a gas turbine in a combined cycle power plant is to drive a generator which produce electricity and to provide input heat for the steam cycle. Power for driving the compressor is also derived from gas turbine.