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Why do we convert generators and loads??

asked 2018-08-10 01:40:44 -0500

Hemi gravatar image

Before doing dynamic studies, we have to convert our solved load flow case. Can someone please tell me the reason for it?? Thank you

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answered 2018-08-15 02:27:01 -0500

jfconroy gravatar image

In a regular power flow calculation, the generators and loads are represented as sources or sinks of active and reactive power. Take a look at any textbook to see how the equations are structured. In a dynamic simulation, generators are modelled as voltage-controlled current sources. So, you need to convert the generators to current sources before you transition from power flow calculation to dynamic simulation. The load in a regular PSSE power flow calculation has no dependency on terminal voltage or frequency. In a dynamic simulation, you want to consider these dependencies, or at least consider the voltage dependency. To do this, you need to convert the loads to impedances and/or current sources. More information about these processes can be found in the PSSE manuals.

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Asked: 2018-08-10 01:40:44 -0500

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Last updated: Aug 15 '18