Recently Delhi has announced its net metering policy for solar pv systems. This was a long awaited move since many states has come up with the policy already.
Though this post is not about the policy review nor about the net metering system but something basic about the interaction of solar generated power with grid.
what i had learned in theory says that the power producer produces power as per demand forecast and only required amount of electricity is fed into the grid thus maintaining the grid stability.
But when it comes to the net metering, the power producer feeds the power which remain surplus after self consumption. And i see no reason that this surplus amount is or can be fore casted. So the question is that
Why the solar generators connected through net metering does not affect the grid electricity?
The answer that i had formulated is (and i am not sure that i am right or not here)
well it does affect the grid stability and grid relay on the solar inverter to maintain the grid stability, and that's the reason the solar inverter is required to monitor the grid parameter
This is what i think what happens here
# When the load on the grid is less the frequency goes up and when the frequency goes up beyond the certain limit(say 3%) the solar inverter trips the power generation
# when there is very high load on the grid ? well in that case the grid will shut off (the transformer will trip) in order to prevent the grid from any damage. and when the grid is down the solar inverter will also trip to prevent the icelanding effect.
Though this post is not about the policy review nor about the net metering system but something basic about the interaction of solar generated power with grid.
what i had learned in theory says that the power producer produces power as per demand forecast and only required amount of electricity is fed into the grid thus maintaining the grid stability.
But when it comes to the net metering, the power producer feeds the power which remain surplus after self consumption. And i see no reason that this surplus amount is or can be fore casted. So the question is that
Why the solar generators connected through net metering does not affect the grid electricity?
The answer that i had formulated is (and i am not sure that i am right or not here)
well it does affect the grid stability and grid relay on the solar inverter to maintain the grid stability, and that's the reason the solar inverter is required to monitor the grid parameter
This is what i think what happens here
# When the load on the grid is less the frequency goes up and when the frequency goes up beyond the certain limit(say 3%) the solar inverter trips the power generation
# when there is very high load on the grid ? well in that case the grid will shut off (the transformer will trip) in order to prevent the grid from any damage. and when the grid is down the solar inverter will also trip to prevent the icelanding effect.
No comments :
Post a Comment