2. Calculate the continuous power that will be available from hydroelectric plant having an available head of 300 meters, catchment area of 150 sq. km, annual rainfall 1-25 m and yield factor of 50%. Assume penstock, turbine and generator efficiencies to be 96%, 86% and 97% respectively. If the load factor is 40% what should be the rating of the generators installed ? [7065 kW, 17662 kW|

2. Calculate the continuous power that will be available from hydroelectric plant having an available head of 300 meters, catchment area of 150 sq. km, annual rainfall 1-25 m and yield factor of 50%. Assume penstock, turbine and generator efficiencies to be 96%, 86% and 97% respectively. If the load factor is 40% what should be the rating of the generators installed ? [7065 kW, 17662 kW|

Power System Analysis and Design (MindTap Course List)

6th Edition

ISBN:9781305632134

Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Chapter2: Fundamentals

Section: Chapter Questions

Problem 2.31P: Consider two interconnected voltage sources connected by a line of impedance Z=jX, as shown in...

See similar textbooks

Similar questions

While the instantaneous electric power delivered by a single-phase generator under balanced steady-state conditions is a function of time havi ng two components of a constant and a double-frequency sinusoid, the total instantaneous electric power delivered by a three-phase generator under balanced steady-state conditions is a constant. (a) True (b) False
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.
For a power station the yearly load duration curve is a straight line from 50,000 to 4000 kw. To meet the load three turbo-generators are installed. The capacity of two generators is 16,000 kw each and the 3rd is rated at 7,000 kw. Determine the following a) Load factor. b) Capacity factor. c) Maximum demand.
As seen in the figure, three generators of 800 kW, 900 kW and 1000 kW are connected in parallel. It generators feed 380 kW load. Frequency-active power graphs of generators are shown as given. According to this; a. Calculate the operating frequency for the situation given in the question.b. Calculate the power transferred by the generators to the load.c. A three-phase asynchronous load of 800 kW and 600 kVA with a reverse power coefficient of 0.78 is installed in the system. engine is connected. The new operating frequency of the system and the active power of the alternators. calculate.d. Do you think the generators in this system are suitable for parallel connection as in the figure?
A 3-phase star connected, 1500 kVA, 13 kV alternator has an armature resistance of 0.9 ohm and a synchronous reactance of 8.0 ohms. When carrying rated load voltage, calculate the generated voltage per phase at loads of I.) Unity P.F. ii.) 0.8 lagging P.F. iii.) 0.8 leading P.F. iv.) calculate the voltage regulation for each load and determine best regulation.
In 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.
1-Alternators can be overloaded by 10 percentage for 10-15 minutes, this a. Steady state voltage stability will get affected b. may reduce the stability limit c. may disturb Nose point d. may lose Angular stability 2-Often, the network is referred as an infinite bus when a change in input mechanical power or in field excitation to the unit does not cause an appreciable change in a. system frequency or terminal voltage b. system frequency alone c. system frequency and terminal voltage d. Total production cost
What is the main direct cause of reactive power in AC system?A. Resistance of transmission linesB. Inductance and capacitance in the loadsC. Ideal transformer connected in the systemD. Power produced by generator
Qa1. The three phases of a generator can be connected in either delia (D) or wye (Y) connection. List two advantages of three phase system over a single phase system. Also write mathematical relationship between the phase voltage and the ine voltage, and the phase current and the line current for both delia (D) and wye (Y) connections. Please answer in typing format please..
For a power station the yearly load duration curve is a straight line from 50,000 to 4000 kw. To meet the load three turbogenerators are installed. The capacity of two generators is 20,000 kw each and the 3rd is rated at 7,000 kw. a. Draw the annual load duration curve b. Determine the following the Energy generated per year, Load factor and Annual Capacity factor.
Table Q2a Time (hours) 0-6 6-12 12-14 14-18 18-24 Load (MW) 45 90 135 150 75 Referring to the Table Q2a; i) Draw the load curve and the load duration curve [Use the graph paper provided] ii) Indicate the base load and the peak load on the graph. Determine the values for both loads. iii) Choose the suitable generating units to supply the load and list their operating schedules. Later, compute the total installed capacity. iv) Calculate the load factor and the plant capacity factor. Discuss the impact on the operating schedule if the plant capacity factor increases to 0.9.
5. Draw the daily load curve and load duration curve for a power station with any arbitrary loads you like. From the load curve, determine the following. i. Maximum demand ii. Average demand ii. Daily energy consumption