Record Power Flow in a Two Area Power System in Simulink

I am currently working on a two area power system and want to measure the interarea power oscillation in different grid event. I have comnstructed my two-area power system as follows:

Can anyone help me for the measurement of the power oscillation between the two areas? Thank you.

Answer 1

[Sayan]

Hi Jacky,

I understand from your query that you are trying to measure the 3-phase power transfer between the two area models in your system.

In this case, you can follow the below-mentioned steps to obtain the same.

• Use the "Three-PhaseV-I Measurement" block (available at Simscape / Electrical / Specialized Power Systems / Sensors and Measurements) to measure the instantaneous three-phase voltage current flowing between the two areas.
• Connect the output of 3-phase measured voltage and current to the "Power (3ph, Instantaneous)" block (available at Simscape / Electrical / Specialized Power Systems / Sensors and Measurements) to measure the instantaneous 3-phase active and reactive power flow between the two areas.
• One point to consider is that the "Power (3ph, Instantaneous)" block measures power accurately for a 3-phase balanced harmonic-free system. So if there are harmonics in your system, you need to filter them first.

You can further find more information on the "Three-PhaseV-I Measurement" and "Power (3ph, Instantaneous)" blocks in the following MathWorks Documentation links:

• "Three-PhaseV-I Measurement":https://www.mathworks.com/help/releases/R2022b/sps/powersys/ref/threephasevimeasurement.html
• "Power (3ph, Instantaneous)":https://www.mathworks.com/help/releases/R2022b/sps/powersys/ref/power3phinstantaneous.html

Hope this answers your query.