Three-Phase Balanced Voltage SAGS Mitigation By Using Voltage Compensator

Lia Asmira, Abdul Halim (2013) Three-Phase Balanced Voltage SAGS Mitigation By Using Voltage Compensator. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

In these days, power quality is becoming an important role in electrical power system. Voltage sags is one of the most harmful power quality disturbances because it can bring negative affect mostly on the sensitive loads. Basically, the characteristic of the voltage sag is important things to understand through this project. Nowadays, there have lots of new technologies rise in order to mitigate voltage sag problem on sensitive loads. For example, Dynamic Voltage Restorer (DVR), Distribution Static Compensator (D-Statcom), Uninterruptible Power Supply (UPS), Ferroresonant Transformer, Flywheel and Motor Generator (MG), Static Var Compensator (SVC), Sag Proofing Transformer, and more. In this study, proposed custom power device (CPD) which called dynamic voltage restorer (DVR) is being implemented to the three-phase power system to mitigate voltage sags occur. Basically, it is installed between the incoming supply and the loads which called as sensitive loads or electrical loads. This type of CPD is used to inject voltage on the system during voltage sag occur. So that it can compensate any interference to affect the loads. This device was being simulated by using MATLAB/Simulink at different percentage voltage sag of nominal voltage. From the simulation result, it shows that Dynamic Voltage Restorer can mitigate voltage sags successfully in the electrical power system.

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