UNIFIED POWER FLOW CONVERTER UPFC
UPFC concept was proposed by GyuGyi in 1991. The UPFC was devised for real time control and dynamic compensation of…
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PRINCIPLE OF OPERATION OF UNIFIED POWER FLOW CONTROLLER UPFC
UPFC consist of two back to back converters named VSC1 and VSC2, are operated from a DC link provided by…
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BENEFITS OF VSC BASED TRANSMISSION SYSTEM
Voltage Source Converter (VSC) technology has been selected as the basis for several recent projects due to its controllability, compact modular design, ease…
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SYNCHRONOUS CONDENSER
A Synchronous Condenser is a device that control voltage on an electric utility’s transmission or distribution system. Voltage is the…
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ADVANTAGES OF THE THYRISTOR CONTROLLED SERIES CAPACITOR
Use of thyristor control in series capacitors potentially offers the following little-mentioned advantages: 1. Rapid, continuous control of the transmission-line…
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POLARIZATION OF BACK EMF
Let us consider the case of two platinum electrodes dipped in dilute sulphuric acid solution. When a small potential difference…
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PRIMARY SECONDARY AND TERTIARY FREQUENCY CONTROL
PRIMARY CONTROL: Primary control consists of changing a generating unit’s power versus the frequency, according to its static generation characteristic…
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FREQUENCY CONTROL IN AN ISLANDING SYSTEM AND IN INTERCONNECTED SYSTEMS
A power system can be referred to as an islanding system when it is disconnected from other systems and does…
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COMPARISON BETWEEN STATCOM AND SVC
The main difference between a STATCOM and an SVC is the way they operate: a STATCOM works as a controllable…
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FACTORS LIMITING POWER FLOW THROUGH TRANSMISSION LINE
It depends on what is limiting the power flow and how much of an increase is needed to solve the…