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Performance of Power Transmission

Series and Shunt Compensation of Transmission Lines

Series and Shunt Compensation of Transmission Lines: The performance of long EHV AC transmission systems can be improved by reactive compensation of series or shunt (parallel) type. Series capacitors and shunt reactors are used to reduce artificially the series reactance and shunt susceptance of lines and thus they act as the line compensators. Series and …

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Methods of Voltage Control in Transmission Lines

Methods of Voltage Control in Transmission Lines: Practically each equipment used in power system are rated for a certain voltage with a permissible band of voltage variations. Voltage at various buses must, therefore, be controlled within a specified regulation figure. This article will discuss the Methods of Voltage Control in Transmission Lines by means of …

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Power Flow through Transmission Line

Power Flow through Transmission Line: So far the transmission line performance equation was presented in the form of voltage and current relationships between sending-and receiving-ends. Since loads are more often expressed in terms of real (watts/kW) and reactive (VARs/kVAR) power, it is convenient to deal with transmission line equations in the form of sending- and …

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Equivalent Circuit of Long Transmission Line

Equivalent Circuit of Long Transmission Line | π and T network: So far as the end conditions are concerned, the Equivalent Circuit of Long Transmission Line can be established in the form of a T- or π-network. The parameters of the equivalent network are easily obtained by comparing the performance equations of a π-network and …

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Ferranti Effect in Transmission Line

Ferranti Effect in Transmission Line: The effect of the line capacitance is to cause the no-load receiving-end voltage to be more than the sending-end voltage. The effect becomes more pronounced as the line length increases. This phenomenon is known as the Ferranti Effect in Transmission Line. A general explanation of this effect is advanced below: …

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Voltage Regulation of Transmission Line

Voltage Regulation of Transmission Line: Voltage Regulation of Transmission Line is defined as the rise in voltage at the receiving-end, expressed as percentage of full load voltage, when full load at a specified power factor is thrown off, i.e. where |VR0| = magnitude of no load receiving-end voltage |VRL| = magnitude of full load receiving-end …

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