Abstract
The present study investigates the impact of various factors affecting coal-fired power plant economics of 210 MW subcritical unit situated in north India for electricity generation. In this paper, the cost data of various units of thermal power plant in terms of power output capacity have been fitted using power law with the help of the data collected from a literature search. To have a realistic estimate of primary components or equipment, it is necessary to include the latest cost of these components. The cost analysis of the plant was carried out on the basis of total capital investment, operating cost and revenue. The total capital investment includes the total direct plant cost and total indirect plant cost. Total direct plant cost involves the cost of equipment (i.e. boiler, steam turbine, condenser, generator and auxiliary equipment including condensate extraction pump, feed water pump, etc.) and other costs associated with piping, electrical, civil works, direct installation cost, auxiliary services, instrumentation and controls, and site preparation. The total indirect plant cost includes the cost of engineering and set-up. The net present value method was adopted for the present study. The work presented in this paper is an endeavour to study the influence of some of the important parameters on the lifetime costs of a coal-fired power plant. For this purpose, parametric study with and without escalation rates for a period of 35 years plant life was evaluated. The results predicted that plant life, interest rate and the escalation rate were observed to be very sensitive on plant economics in comparison to other factors under study.
Highlights
Profitable capital investment leads to the growth and prosperity of an economy
The present study investigates the impact of various factors affecting coal-fired power plant economics of 210 MW subcritical unit situated in north India for electricity generation
Total direct plant cost involves the cost of equipment and other costs associated with piping, electrical, civil works, direct installation cost, auxiliary services, instrumentation and controls, and site preparation
Summary
These economic indices provide a basis to evaluate the net present value index for the analysis of process industries. The objective of the present work is to achieve profitable capital investment in a 210 MW coal-fired thermal power plant situated in north India. A balanced integration of the cost analysis module of coal-fired power plant and economics needs to be carried out, so that the power plant economic indices of coal-fired power plant in terms of total capital investment, operating cost (i.e. fuel cost, operations and maintenance cost), revenue and net present value could be analysed. The basis of most design decisions is economic; economical consideration plays a significant role as the economics of coal-fired power plant is closely associated with technical aspects. Various methods have been developed for controlling the economics of thermal power plant, namely annual cost method, capitalized cost method and present worth method
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