Annual Report 2011-2012
Annual Report 2011-2012
Annual Report 2011-2012
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<strong>Annual</strong> Research <strong>Report</strong> <strong>2011</strong>-<strong>2012</strong><br />
Project Title:<br />
Strategic planning for removing load limiting factors and<br />
repowering of old steam power plants<br />
Department: Power Plant Operation Studies<br />
Employer: TAVANIR Co.<br />
Project manager: M.E. SarbandiFarahani<br />
Project Code: COPVA02<br />
Project Staff: F. Rahmani, H. Abroshan, H. Rezazadeh, A. NamaziTajarogh, S. Shahmansouri,<br />
M.Tajik Mansouri, S. JavanshirBonab, N. Irani, M.SoltaniHoseini, S. M.Mousavian, F.<br />
AhmadiBoyaghchi, M.TavanpourPaveh, E. Gharibian, M.Dahaghin, M.Rostami, M.Faraghi, F.<br />
Eskandari<br />
Project Summary:<br />
Ministry of Energy as the responsible of supplying required power of the country is<br />
faced with aging of steam power plants as a important probleM.Construction of new<br />
power plants need a great capital cost. In many cases, increasing power generation by<br />
repowering methods and removing load limiting factors needs less costs with respect to<br />
new fields. So using these technologies in addition to increase the efficiency of old units<br />
will postpone investment costs of power generation.<br />
In the present project, after selecting three power plants (Beasat, Bandar Abbas and<br />
Ramin) among units older than 25 years, the following steps have been done:<br />
• Evaluating the mentioned units according to their operating documents,<br />
performance tests results and cycle modeling.<br />
• Studying methods of repowering and removing load limiting factors in selected<br />
units and determining applicable options.<br />
• Developing software for economic evaluation of different plans for repowering<br />
of steam power plants and choosing the most economic option for each unit.<br />
• Determining load limiting factors in the three selected units and<br />
technical/economical evaluating of each plan for removing them.<br />
• Preparing a preliminary plan for repowering of talented units.<br />
Project Results:<br />
Results of technical/economical evaluation for the selected units are:<br />
• According to performing the CO2 capturing plan for unit No. 2 and 3 of Beasat<br />
power plant, repowering of this unit is impossible. So the best option for this<br />
unit is removing its load limiting factors including leakage of gas air heater,<br />
reduction of condenser vacuum, leakage of BFP valves and crack of turbine<br />
rotor.<br />
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