The yearly load duration curve of a certain power station can be approximated as a straight line; the maximum and minimum loads being 40 MW and 10 MW respectively. To meet this load, three turbine generator units, two rated at 20 MW each and one at 10 MW are installed. Draw the load duration curve and determine: (i) Installed capacity (ii) Plant capacity factor (iii) kWh output per year (iv) Load factor.
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- The yearly load duration curve of a certain power station can be approximated as a straight line; the maximum and minimum loads being 40 MW and 10 MW respectively. To meet this load, three turbine generator units, two rated at 20 MW each and one at 10 MW are installed. Draw the load duration curve and determine: (i) Installed capacity (ii) Plant capacity factor (iii) kWh output per year (iv) Load factor.2. a) Explain the terms load factor and diversity factor. b) Discuss the advantages of interconnected grid system. c) A generating station is to supply four regions of load whose peak loads are 10 MW, 5 MW, 8 MW and 7 MW. The diversity factor at the station is 1-5 and the average annual load factor is 60%. Calculate: (i) the maximum demand on the station, (ii) annual energy supplied by the station and (iii) suggest the installed capacity and the number of units.The yearly load duration curve of a certain power station can be approximated as a straight line ; the maximum and minimum loads being 80 MW and 40 MW respectively. To meet this load, three turbine generator units, two rated at 20 MW each and one at 10 MW are installed. Determine (i) installed capacity (ii) plant factor (iii) kWh output per year (iv) load factor.
- Q1. The yearly load duration curve of a certain power station can be approximated as a straight line; the maximum and minimum loads being 80 MW and 40 MW respectively. To meet this load, three urbine generator units, two rated at 20 MW each and one at 10 MW are installed. Determine (i) installed capacity (ii) plant factor (iii) kWh output per year (iv) load factorIn a given system of base power of 250 MW, and bus 3 is taken as reference. The per-unit reactances are X12 = 0.2 p.u., X13 = X23 = 0. 1 p.u. The power flow in the system is given as: PF12 = 50 MW, PF13 = 150 MW, PF23 = 50 MW. Based on readings from 2 meters (not including M12 meter), M13 = 145 MW (not calibrated), and M23 = 50 MW (well calibrated), deduce the flow on line 1-2. Select one: O a. PF12 = - 47.5 MW. O b. None of these O c. PF12 = 67.5 MW. O d. PF12 = 47.5 MW. O e. PF12 =- 57.5 MW. O f. PF12 = 57 MW.For a power station the yearly load duration curve is a straight line from 40,000 to 3000 kw. To meet the load three turbo-generators are installed. The capacity of two generators is 15,000 kw each and the 3d is rated at 6,000 kw. Determine the following a) Load factor. b) Capacity factor. c) Maximum demand.
- Power factor correction is usually done by adding _________ to the load circuit.Select the correct response:a. switchb. capacitorc. inductive loadsThe p.u. impedance value of an alternator corresponding to base values of 13.2 kV and 30 MVA is 0.2 p.u. Then the p.u. impedance value of an alternator for the new base values of 13.8 kV and 50 MVA is......7. TY Hat CHICL Ans. 1. Iron los.........varies approximately as V². 2. Cu loss..........it also varies as ² but decreases with an increase in voltage if constant kVA output is assumed. 3. Efficiency...........for distribution transformers, efficiency at fractional loads decreases with in- crease in voltage while at full load or overload it increases with increase in voltage and vice- versa. 4. Regulation..........it varies as but decreases with increase in voltage if constant kVA output is assumed. 5. Heating.........for constant kVA output, iron temperatures increase whereas Cu temperatures decrease with increase in voltages and vice-versa. quems
- please solve for nodal stress method. (if it is possible to apply supernodes)Explain the concept of FACTS (Flexible Alternating Current Transmission Systems) devices. How do they enhance the control and stability of power systems? Provide examples of FACTS devices and their applications.2.2 Three 20 MVA, 11/0.66 kV, 50 Hz, 3-phase transformers are connected together to supply a mining load. State the main conditions necessary before these three transformers are connected together. (4) nit%202%20Thre....pdf A Unit%202%20Thre....pdf A Unit%201%20-%2.pdf 40) Show al 9:12 AM 7/24/2021