ANNEXURE-B
B-1 Steam Power Station B-1.1 ‘
B-1.2 ‘
Explanation (1) : Auxiliary power consumption shall be the average value based on Auxiliary Energy Consumption at the PLF or deemed PLF during the Settlement period. Explanation (2) : The available capacity shall not exceed the Installed Capacity B-1.3 B-1.4 ‘
B-1.5 Explanation: The Demonstrated Capacity shall be corrected for 47.5 Hz grid frequency and worst circulating water inlet temperature for the purpose of arriving at the Installed Capacity. B-1.6 ‘ B-1.7 ‘ Explanation : In case of coal or lignite fuel, the GCV of the fuel as received shall be reduced by 100 kCal/kg to arrive at the GCV of the fuel as fired for the purpose of determination of the fuel consumption B-1.8 B-1.9 ‘ Explanation : Installed Capacity shall be maintained down to 47.5 Hertz (Hz) grid frequency, with worst circulating water inlet temperature and with worst fuel. B-1.10 ‘ Explanation : MCR shall be maintained down to 47.5 Hertz (Hz) grid frequency, with worst circulating water inlet temperature and with worst fuel. B-1.11 ‘ B-1.12 ‘ B-1.12.1 ‘
The daily Net Heat Rate at any loading
of the Generating Station shall be
Where, DNHR is the Net Heat Rate of the Generating Station during a day in Kcal/Kwh, GHR is the Gross Heat Rate of the Turbine Generator Cycle in kCal/kWh corresponding to the loading of the Turbine-Generator during the relevant day, as per para 1.1.4.1 of Operation Norms SGE is the Steam Generator Efficiency expressed in percentage , as per para 1.1.4.1.1 of Operation Norms. AEC is the Auxiliary Energy Consumption, corresponding to the loading of the Turbine Generator during the relevant day, expressed in percentage, as per para 1.1.4.1 of Operation Norms. The monthly average Net Heat Rate shall be calculated by weighted average as per the following formula :
Where, MNHR is the monthly average Net Heat Rate in kCal/kWh, DNHR is the Net Heat Rate for a day in kCal/kWh NkWh is the net kWh delivered at the switchyard during the relevant day Note (1) : The guaranteed Net Heat Rate shall be at design cooling water inlet temperature corresponding to 90% duration and adjustment for ash, moisture and hydrogen content of primary fuel, except for Corex gas. Note (2) : In case the guaranteed Net Heat Rate is not available , the Net heat Rate shall be determined based on guaranteed Gross Heat Rate of Steam Turbine - Generator Cycle at design cooling water inlet temperature corresponding to 90% duration, guaranteed Steam Generator Efficiency with adjustment for ash, moisture and hydrogen content except for Corex gas and Auxiliary Energy consumption and degradation multiplying factor of 1.05. B-1.13 B-1.14
B-1.16 B-1.17 B-1.18
B-1.19 ' B-2 B-2.1 ‘
B-2.2 B-2.2.1 ‘ B-2.2.2 ‘ B-2.3 B-2.3.1 ‘ Explanation : Site conditions refer to annual mean dry bulb temperature, annual mean relative humidity, site atmospheric pressure and worst circulating water inlet temperature. B-2.3.2 ‘ B-2.3.3 ‘ B-2.3.4 ‘
B-2.3.5 ‘
B-2.4 ‘ B-2.5 B-2.5.1 ‘ B-2.5.2 ‘ Explanation: The gross Heat Rate and a Net Heat Rate shall be based on NCV of fuel. B-2.5.2.1
A) The Net Heat Rate for a Settlement Period at any loading of the CCCT Generating Station shall be a) guaranteed Net Heat Rate at site ambient conditions corresponding to loading of the Generating Station multiplied by 1.035 or b) the value determined by the following formula, whichever is less:
100 Where, SNHR is the Net Heat Rate of the Generating Station, in kCal/Kwh, during a Settlement Period in combined cycle mode. GHR is the Gross Heat Rate of the CCCT Generating Station in kCal/kWh corresponding to the loading of the Generating Station during the relevant Settlement Period as per para 1.1.4.2.1 of Operating Norms and corrected to site ambient conditions as per manufacturer’s correction factors to take into account the deviations from standard reference conditions of ISO-2314 and ISO-3977. AEC is the Auxiliary Energy Consumption of the Generating station in combined cycle mode expressed in percentage. The monthly average Net Heat Rate shall be calculated by weighted average as per the following formula:
Sum
of (SNHR x NkWh) during the month Where, MNHR is the monthly average Net Heat Rate in kCal/kWh, SNHR is the Net Heat Rate for a Settlement Period in kCal/kWh. NkWh is the net electric energy in kWh delivered at the switchyard during the relevant Settlement Period. B) For Unit(s) operating in simple cycle mode, the Net Heat Rate for a Settlement Period at any loading shall be a) guaranteed Net Heat Rate at site ambient conditions corresponding to loading of the Unit multiplied by 1.0325 or b) the value determined by the following formula, whichever is less:
100 Where, SNHR (SC) is the Net Heat Rate of the Unit in kCal/kWh during a Settlement Period in simple cycle mode. GHR (SC) is the Gross Heat Rate of the Unit in kCal/kWh corresponding to its average loading during the relevant Settlement Period as per para 1.1.4.2.2 of Operating Norms for simple cycle mode of operation and corrected to site ambient conditions as per manufacturer’s correction factors to take into account the deviations from standard reference conditions of ISO-2314. AEC (SC) is the Auxiliary Energy Consumption of the Unit in simple cycle mode expressed in percentage Note: 1. Site ambient conditions, for the
purpose of determining Gross Heat 2. Where a combination of fuels (e.g. Natural Gas and Naphtha) is used, the respective net heat rate for a Settlement Period shall be calculated separately for each fuel. B-2.6 ‘ In relation to a period, the expenditure incurred in operation and maintenance of the Generating Station including expenses towards manpower, spares, consumables (including water), insurance and overheads. B-2.7 ‘ B-2.8 B-2.8.1 ‘
B-2.8.2 ‘
B-2.9 B-2.9.1 ‘ B-2.9.2 ‘ B-2.9.3 ‘ B-2.10 B-3 B-3.1
B-3.2 B-3.2.1 B-3.2.2 B-3.3 B-3.3.1 Explanation : Site conditions refer to annual mean dry bulb temperature, annual mean relative humidity and maximum charge air coolant temperature. B-3.3.2 B-3.3.3 B-3.3.4 B-3.3.5
Explanation: 1. Auxiliary Energy consumption shall be taken as Auxiliary Power consumption for this purpose. 2. Available capacity shall not exceed the Installed Capacity. B-3.4 B-3.5 B-3.6 B-3.6.1 B-3.6.2 Explanation: In relation to, Diesel Engine - Generator (DG) Unit, the Gross Heat Rate and the Net Heat Rate shall be based on NCV of fuel. B-3.6.2.1 The daily Net Heat Rate of the Generating Station shall be determined by the following formula:
100 Where, DNHR is the Net Heat Rate of the Generating Station during a day GHR is the Gross Heat Rate of the Diesel Generating Unit in kCal /kWh corrected to site ambient conditions to take into account the deviations from standard reference conditions of ISO-3046. AEC is the Auxiliary Energy Consumption, expressed in percentage, The monthly average Net Heat Rate shall be calculated by weighted average as per the following formula.
Sum
of (DNHR X NkWh) during the month Where MNHR is the monthly average Net Heat Rate in kCal/kWh, DNHR is the Net Heat Rate for a day in kCal/kWh NkWh is the net kWh delivered at the switchyard during the relevant day B-3.7 In relation to a period, the expenditure incurred in operation and maintenance of the generating station including manpower, spares, consumables (including water), insurance and overheads. B-3.8 B-3.9 B-3.9.1
B-3.9.2
B-3.10 B-3.11 ' Diesel Engine Generating Station : Diesel Engine Generator and auxiliaries B-4 B-4.1 Weight of reagent required in Kg per Kg of primary fuel fired in the steam generator. B-4.2
Ratio of number of moles of SO2 removed in the desulphurisation system to the number of moles of SO2 produced in the combustion process, expressed as percentage. |

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