You can use a three phase RLC load available in the simulink library as a constant three phase power load in the micro grid AC or DC application.

https://in.mathworks.com/help/physmod/sps/powersys/ref/threephaseseriesrlcload.html;jsessionid=1ef8455d67518910aff82fe0813b

Dear Researcher,

Please refer to "Power System Blockset Documentation" in MATLAB. This document clearly shows a how to model a constant power load. Also, refer to session 7 of the same document which highlights the section called "Modeling a Nonlinear Resistance".

Apart from this, I have attached few links where you can get sufficient information related to your query. Hope this would help you.

https://in.mathworks.com/help/physmod/sps/examples/simplified-model-of-a-small-scale-micro-grid.html

https://www.mathworks.com/examples/simpower/mw/sps_product-power_HEMS-home-energy-management-system

http://ieeexplore.ieee.org/abstract/document/4677119/

https://arxiv.org/ftp/arxiv/papers/1701/1701.07961.pdf

Thank you and All the very best....!!!

Thank you all for your comments.

You can just use a constant current load given by the reference P/V, V is the PCC voltage. P is the power of CPL