Electrical Power
A practical guide to electricity generation, machines, and power systems.
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- • Build a unified understanding from field theory through machines to system faults
- • Use formulas and worked examples for AC/DC circuits, transformers, and motors
- • Learn how protection, earthing, and switchgear respond to faults
- • Follow fault-current calculation logic and commissioning test procedures
الوصف
Electrical Power by W. J. R. H. Pooler is a technical, practice-oriented text covering the physics and engineering used in electrical power systems. It begins with foundations—notation, units, electromagnetism, induced EMF, and electrostatics—then develops core circuit theory for DC and alternating current. From there, it explains AC circuit behavior on resistance, inductance, and capacitance, and extends into machines: DC motors and generators, synchronous machines, and induction motors. Later chapters move through insulation, transformer construction and operation, rectification, power lines, neutral earthing, switchgear, instruments, and protection. The book concludes with power-system concepts, fault-current calculation methods, commissioning and fault finding, and a program manual for fault calculations.
فهرس المحتويات
About the author Summary Electromagnetism Induced EMF Electrostatics DC Circuits Alternating Current (AC) Resistance, Inductance and Capacitance on AC AC Circuits Magnetic Properties of Materials DC Motors and Generators AC Synchronous Machines AC Induction Motors Insulation Transformers Rectifiers Power Lines Neutral Earthing Switchgear Instruments Protection Power Systems Generator Response to System Faults Calculation of Fault Currents Symmetrical Components Commissioning and Fault Finding Program Manual Index
معاينة
A full stop in Bold ( . ) is a decimal point.
A mid line dot ( ) means multiplied by.
A large mid line dot ( • ) means vector dot product. A • B = A B Cos .
Units
cm/gm/sec (cgs) units are;
dyne = force to accelerate 1 gm at 1 cm/sec2
erg = work done by 1 dyne cm
unit pole = magnetic pole that exerts 1 dyne on an identical pole 1 cm distant in a vacuum
G = gauss = magnetic field that exerts 1 dyne on a unit pole
maxwell (previously lines) = magnetic flux = magnetic flux of field of 1 gauss crossing 1 cm2
emu of current = current flowing through an arc of a circle 1 cm radius, length 1 cm which
causes a magnetic field of 1 gauss at the centre of the arc
A coil carrying an electrical current generates a magneto motive force (mmf), which is
measured in Gilberts.
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