Anti-islanding

Anti-islanding

Anti-islanding

12/20/16

“How can we turn off solar power generation when the grid shuts down?”

 

Grid islanding might be cool for keeping your residential unit powered when the grid experiences a blackout, but feeding electricity through a grid-tied system can be very dangerous to maintenance workers. So how can we develop a system in which the generation unit will shut off when the grid does? Well, let’s use our engineering mindset to solve this problem. One fact about grid-tied inverters is that they can sense the frequency of the incoming current.  We also know that when a blackout happens, this current will drop down. So what if we were to program the inverter to recognize when the frequency drops below a certain threshold, it would cut power generation? This is the operating principle behind what renewable energy engineers call anti-islanding, and it is required as a feature for all grid-tied systems in the United States.

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google+ photo

You are commenting using your Google+ account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s