# Power Station

Topics: Nuclear power, Hydroelectricity, Electricity generation Pages: 32 (9162 words) Published: August 30, 2013
DEPARTMENT OF ENGINEERING
ELECTRICAL POWER, COMPUTER & TELECOMMUNICATIONS SECTION
Higher College of Technology, P O BOX 74, Al-KHUWAIR, CODE 133  24473600 Fx 24485364

Second semester

2012-13

Specialization: Electrical power engineering Level: Baccalaureate EEPW4256: Power stations Chapter 1: Load curves & its relevant factors

Prepared by: Jayanna k Lecturer: Electrical power Engineering

Student name: Student ID:

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Chapter 1 Load curves & its relevant factors

Contents: 1.1 Analysis of Load curves 1.2 Important terms & Factors 1.2.1 Connected Load 1.2.2 Maximum demand 1.2.3 Demand Factor 1.2.4 Average Load 1.2.5 Load Factor 1.2.6 Diversity Factor 1.2.7 Plant Capacity Factor 1.2.8 Plant Factor 1.3 Problems on load curves & its factors

References: [1] V.K. Mehta & Rohit Mehta, “Principles of Power System,” Third Edition, S.Chand & Company Ltd., INDIA, 2003, pp.41-55

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1.1 Analysis of Load curves The load on a power station is never constant; it varies from time to time. These load variations during the whole day are recorded half-hourly or hourly and are plotted against time on the graph called daily load curves. Fig.1 shows a daily load curve of a power station.

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(iv)The area under the daily load curve divided by the total number of hours gives the average load on the station in that day Average load = Area (in KWh) under daily load curve/ 24 hours (v) The ratio of average load to maximum demand gives load factor. (vi)The load curve helps in selecting the size and number of generating units (vii) The load curve helps in preparing the operating schedule of the station

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Power...