How has Renewable Energy impacts on the Protection Relays operation?

In the last webinar, we talked about there is a tendency on the market to go to bigger solar inverters. As the power increases (up to 7.5MVA and more) also the voltages are rising. The market demands overcurrent protection, but full data registers and protection and control functions more complex: relays with reclosing capabilities, advanced communications…

Depending on the market practices, economic costs, and the impact on network stability, there are different approaches to managing wind farms.

With traditional relays, the management options are reduced because any failure of the power supply system would imply either the stop of the turbine or, what is worse, a non-protected generation scenario.

We answered questions such as; why a self-powered relay is needed on windfarms?

Depending on the market practices, the economic costs, and the impact on network stability, there are different approaches to managing the wind farms.

Using traditional relays, any failure of the power supply system would imply either the stop of the turbine or, what is worse, a non-protected generation scenario.

The generator’s electrical protection cannot be left in the hands of an auxiliary powered relay to ensure non-stop protection.

Self-powered protection relays maintain the WTG under protection whenever the turbine is connected to the MV network, including the energizing process. Other devices of the generator are still in the powering up process.

👉If you want to know more, you can watch the video-webinar here: