Power System Components

Power System Components:

Balanced Three Phase Network : The solution of a Balanced Three Phase Network under balanced conditions is easily carried out by solving the single-phase network corresponding to the reference phase. Figure 4.1 shows a Single Phase Solution of Balanced Three Phase Networks. The generator and load neutrals are therefore at the same potential, so that In = 0. Thus the neutral impedance …


Complex Power Flow in Single Phase Load to Three Phase Load : Now we are going to discuss about Complex Power Flow in Single Phase Load to Three Phase Load. Let us see one by one. Consider a Complex Power Flow in Single Phase Load fed from a source as in Fig. 4.9. Let When θ  is positive, the current lags behind voltage. This …


Per Unit System Definition : Per Unit System Definition- It is usual to express voltage, current, voltamperes and impedance of an electrical circuit in per unit (or percentage) of base or reference values of these quantities. The Per Unit System Definition value of any quantity is defined as: The Per Unit System Definition method is particularly convenient in power systems as the various …


Phasor Diagram of Synchronous Motor : The Phasor Diagram of Synchronous Motor is the most important element of a power system. It converts mechanical power into electrical form and feeds it into the power network or, in the case of a motor, it draws electrical power from the network and converts it into the mechanical form. The machine excitation which is controllable …


Power System Impedance Diagram : A one-line diagram of a Power System Impedance Diagram shows the main connections and arrangements of components. Any particular component may or may not be shown depending on the information required in a system study, e.g. circuit breakers need not be shown in a load flow study but are a must for a protection study. Power system …


Representation of Load Curve : Load drawn by consumers is the toughest parameter to assess scientifically. The magnitude of the load, in fact, changes continuously so that the load forecasting problem is truly a statistical one. A typical daily Representation of Load Curve is shown in Fig. 1.1. The loads are generally composed of industrial and domestic components. An industrial load consists mainly …


Salient Pole Synchronous Generator : A Salient Pole Synchronous Generator, as shown in Fig. 4.29, is distinguished from a round rotor machine by constructional features of field poles which project with a large interpolar air gap. This type of construction is commonly employed in machines coupled to hydroelectric turbines which are inherently slow-speed ones so that the Salient Pole Synchronous Generator has …


Updated: May 1, 2020 — 4:22 pm