Graphics developed for the analysis of wind power output and grid congestion in Portugal. June 2014.

As part of my Ph.D. thesis, I conducted an analysis on grid congestion, to determine the best substations where to connect more wind parks.

These are some of the graphics that show that congestion is not an immediate issue for wind power developers in some places in Portugal.

Graph 1 shows wind power output and the resulting grid congestion as more wind power capacity is added:

Conceptual graph of the wind power curtailment that results from the addition of more wind power capacity, in one region of Portugal.
Graph 1. Conceptual graph of the wind power curtailment that results from the addition of more wind power capacity, in one region of Portugal.

Graph 2 shows the daily variations of power demand over a year, in a region of Portugal. The variations in power demand impact grid congestion. If power demand is large when non-dispatchable units (as wind parks in Portugal) are producing large amounts of power, there will be no grid congestion -assuming grid capacity is at least equal to the peak of power demand. But if for example, power demand is low when wind blows the most (say at 2 in the morning), grid can get congested because not all power produced is consumed.

Graph 2. Daily variations of Power demand over a year.
Graph 2. Daily variations of Power demand over a year.

Finally, graph 3 shows wind power and demand frequency plots. Grid capacity is a function of these two variables and others (not shown here).

Graph 3. Power demand and wind power output in a region in Portugal.
Graph 3. Power demand and wind power output in a region in Portugal.
Advertisements

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 )

w

Connecting to %s