HVDC Transmission System

Definition: The system which uses the direct current for the transmission of the power such type of system is called HVDC (High Voltage Direct Current) system. The HVDC system is less expensive and has minimum losses. It transmits the power between the unsynchronized AC system. Component of an HVDC Transmission System The HVDC system has…

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Power System

Definition: The power system is a network which consists generation, distribution and transmission system. It uses the form of energy (like coal and diesel) and converts it into electrical energy. The power system includes the devices connected to the system like the synchronous generator, motor, transformer, circuit breaker, conductor, etc. The power plant, transformer, transmission line,…

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Single Line Diagram of Power Supply System

The electrical energy is produced at generating stations, and through the transmission network, it is transmitted to the consumers. Between the generating stations and the distribution stations, three different levels of voltage (transmission, sub-transmission and distribution level of voltage) are used. The high voltage is required for long distance transmission and, the low voltage is…

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Load Duration Curve

Definition: The load duration curve is defined as the curve between the load and time in which the ordinates representing the load, plotted in the order of decreasing magnitude, i.e., with the greatest load at the left, lesser loads towards the rights and the lowest loads at the time extreme right. This curve represents the…

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Load Curve

Definition: Load curve or chronological curve is the graphical representation of load (in kW or MW) in proper time sequence and the time in hours. It shows the variation of load on the power station.When the load curve is plotted for 24 hours a day, then it is called daily load curve. If the one…

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Proximity Effect

Definition: When the conductors carrying the high alternating voltage then the currents are non-uniformly distributed on the cross-section area of the conductor. This effect is called proximity effect. The proximity effect results in the increment of the apparent resistance of the conductor due to the presence of the other conductors carrying current in its vicinity.…

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Sag Template

Definition: The sag template is used for allocating the position and height of the supports correctly on the profile.The sag template decided the limitations of vertical and wind load. It also limits the minimum clearance angle between the sag and the ground for safety purpose. The sag template is usually made up of transparent celluloid, perplex,…

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Cable Capacitance

Definition: Cable capacitance is defined as the measurement of the electrical charges stored  within it. The capacitor in the cable is constructed by two conductive material which is separated by an insulator or dielectric. The capacitance of the cable determines the charging current, charging KVA, and the dielectric loss. The capacitance of a cable transmission line…

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Electrical Energy

Definition: The energy which is caused by the movement of the electrons from one place to another such type of energy is called electrical energy. In other words, electrical energy is the work done by the moving streams of the electrons or charges. Electrical energy is the form of kinetic energy because it produces by…

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Insulation Co-ordination

Definition: Insulation coordination is the process of knowing the insulation levels of the power system components. In other words, it is the process of determining the insulation strength of the equipment. The internal and external insulation of the electrical equipment is exposed to continuous normal voltage and temporary abnormal voltage. The equipment insulation is designed…

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