Record Power Flow in a Two Area Power System in Simulink

Question

Jacky 2023-5-16

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回答： Sayan 2023-9-26

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.

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Answer 1

Sayan 2023-9-26

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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: