Dynamic Voltage Restorer DVR

Dynamic Voltage Restorer is a series compensator, which works inserting a voltage of magnitude and frequency necessary. Fig. 5 shows the scheme of this FACTS. DVR consists of a medium voltage switchgear, a coupling transformer, filters, rectifier, inverter, and energy source (e.g. storage capacitor bank) and control and protection system. DVR can inject or absorb real and reactive power independently by an external storage system without reactors and capacitors (Wizmar & Mohd, 2006).

If the storage system is a capacitor bank, during normal operation it will be charging, and when a swell or voltage sag is detected this capacitor will discharge to maintain load voltage supply injecting or absorbing reactive power.

Fig. 5. Scheme of Dynamic Voltage Restorer.

Renewable Energy Eco Friendly

Renewable Energy Eco Friendly

Renewable energy is energy that is generated from sunlight, rain, tides, geothermal heat and wind. These sources are naturally and constantly replenished, which is why they are deemed as renewable.

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