Standardisation has been recognised as a tool to achieve self-sufficiency in any field within a short time. This is all the more important to a developing country like ours which because of the restraint on financial resources has to make a herculian effort to match supply with demand.
With the present known coal reserves of about 110,000 tonnes in the country, a major portion of which is of low grade variety suitable for power generation, thermal generation will necessarily play a vital role in the foreseeable future. To meet the very large anticipated demand it is necessary to add new generating units of higher capacities so that the gap between supply and demand may be kept at the minimum. Construction of the super-thermal stations taken up at various locations in the country is a step in the right direction.
Standardisation of equipment would help manufacturers and the utilities to meet the increased requirements of the power sector without undue delay. Keeping this in view the Central Board of Irrigation and Power has been doing considerable work in standardisation of various equipments required in the power industry.
The working group on transformers which was set up by Central Board of Irrigation and Power has been doing commendable work all these years not only by way of formulating the specifications for the different types of transformers but also in reviewing and revising the old chapters to bring them in line with the current technological developments. The working group during its meeting held in January 1976 at Cochin while discussing the requirements of Generator Transformers felt that it was necessary to have the basic electrical design features of thermal power stations standardised so that these standard values can be incorporated in the Manual on Transformers.
Accordingly, a Committee was set up to standardise the basic electrical design features of thermal power stations with Shri C. S
Sreenivasan, Deputy Chief Engineer, Central Electricity Authority as its Convener. The Committee met twice, once at Delhi in March 1977 and for the second time at Trivandrum in November 1977. During these meetings the draft prepared was discussed and put up for wide circulation to elicit comments. The technical committee of Western Regional Electricity Board which met in Bombay in May 1979 considered the draft standardisation and formed a sub-committee with Shri L.R. Suri, Chief Engineer, Central Electricity Authority as its Chairman to examine it in greater detail and finalise the draft. This gave the desired fillip for the early finalisation of the draft. The sub-committee alongwith the committee of Central Board of Irrigation and Power met twice, at Ukai and Nasik in June 1979 and July 1979 respectively and finalised the draft.
This publication gives the details of the various items standardised in thermal power stations having units of 60 to 210 MW. These recommedations have been made based on the general consensus and the practices that are prevailing within and outside the country.
The Central Board of Irrigation and Power expresses its grateful thanks to Shri C. S. Sreenivasan, Deputy Chief Engineer, Central Electricity Authority who was responsible for preparing in detail the original draft. But for the keen interest taken by Shri L.R. Suri, Chief Engineer, Central Electricity Authority the draft would not have been finalised so quickly. The Central Board of Irrigation and Power is thankful for his interest and involvement in the matter. The Central Board of Irrigation and Power also wishes to place on record the good services rendered by Shri R.K. Khanna, Deputy Director who has done most of the spade work. But for the overwhelming enthusiasm shown by the members of the sub-committee the publication would not have come in the present form. The Central Board of Irrigation and Power thanks all these members for their useful contribution. The Central Board of Irrigation and Power is also thankful to the members of the main Committee and the various commentators for their concrete suggestions
This publication is coming at a time when the various State Electricity Boards and other utilities are going in a big way to add thermal units in their systems. With the feed-back informations about the existing equipment in operation having taken into consideration, this publication will be very much useful to the thermal engineers to expedite their programmes in the design and construction of thermal units. We hope that this will serve as the much needed document to expedite the thermal generation programme in the country.