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Figure 2.7 shows a circuit with a supply system whose open-circuit voltage is E and short-circuit impedance is , where . The load impedanc...
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The load in Figure 2.7 can be expressed as an admittance Y = G + jB supplied from a voltage V, where Y = 1/Z. G is the conductance, i.e. t...
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The high demand of electricity together with the continuously variable nature, and our inability to store electricity in a significant num...
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The system load varies continuously with time in a random fashion. Significant changes occur from hour to hour, day to day, month to month...
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The phasor diagram for the system in Figure 2.16 is shown in Figure 2.17, assuming that the load has a lagging power factor angle ϕ. The li...
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Electrical power systems aim to provide a reliable service to all consumers and should be designed to cope with a wide range of normal, i.e...
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Power flow studies Although in reality the power network is in a continuous dynamic state, it is useful to assume that at one point the...
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In power systems it is essential to keep the frequency and the voltage close to their rated values. The frequency is controlled by contr...
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