Sequence Networks

Definition: The sequence impedance network is defined as a balance equivalent network for the balance power system under an imagined working condition so that only single sequence component of voltage and current is present in the system. The symmetrical components are useful for computing the unsymmetrical fault at different points of a power system network.…

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Regulating Transformer

Definition: The transformer which changes the magnitude and phase angle at the certain point in the power system is known as the regulating transformer. It is mainly used for controlling the magnitude of bus voltage and for controlling the power flow, which is controlled by the phase angle of the transformer. They provide the small…

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Summation Current Transformer

Definition: The transformer which is used for converting the three-phase quantities into the single phase quantity is known as the summation transformer. This transformer is mainly employed for the unbalanced condition in the system and due to fault condition so that the relay operates properly. The connection of the summation current transformer is shown in…

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Difference Between Diode & Transistor

One of the major difference between the diode and the transistor is that the diode converts the alternating current into direct current while the transistor transfers the input signals from the low resistance circuit to high resistance circuit. The other differences between them are explained below in the tabulated form. The diode is also known…

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Classification of Transmission Lines

The classification of the transmission lines depends on its voltage and the length of the conductor. The transmission line is the medium of transferring the power from the generating station to the load centre. It is mainly classified into two types. They are the AC Transmission Line Short-Transmission Line Medium Transmission Line Pi Model of…

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Line Regulation

Definition: The voltage or line regulation is defined as the variation in the voltage at the receiving end of the line when the full load at a given power factor is removed and the voltage at the sending end being kept constant.  In other words, it is defined as the percentage variation in voltage at…

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Difference Between UPS & Inverter

The UPS and inverter both provides the backup supply to the electrical system. One of the major difference between the UPS and inverter is that the switching of UPS from the main supply to the battery is very immediate whereas in inverter the switching from mains supply to battery takes times. The UPS and the…

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Electrical Load

Definition: The device which takes electrical energy is known as the electric load. In other words, the electrical load is a device that consumes electrical energy in the form of the current and transforms it into other forms like heat, light, work, etc. The electrical load may be resistive, inductive, capacitive or some combination between…

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Difference Between Short Circuit & Overload

One of the major difference between the short circuit and the overload is that the short circuit occurs because of the fault between the lines or line-to-earth whereas the overload means the equipment draw the excess of current from the supply. The other differences between them are explained below in the comparison chart. The term…

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Types of Faults in Power System

The fault in the power system is defined as the defect in the power system due to which the current is distracted from the intended path. The fault creates the abnormal condition which reduces the insulation strength between the conductors. The reduction in insulation causes excessive damage to the system. The fault in the power system is…

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