Ask Your Question

Electrical and Mechanical Power

asked 2016-03-30 03:41:23 -0500

EM gravatar image

updated 2016-03-30 03:46:06 -0500

Why in dynamic analysis of machine when plotting, electrical power response is greater than the mechanical power?

edit retag flag offensive close merge delete

2 answers

Sort by ยป oldest newest most voted

answered 2016-04-14 12:23:50 -0500

MNing gravatar image

The dynamic process is caused by the difference between electrical power and mechanical power. If the electrical power and mechanical power are equal, there will no dynamic process.

edit flag offensive delete link more

answered 2016-04-07 15:30:09 -0500

danzg gravatar image

updated 2016-04-08 11:15:15 -0500

The difference is due to the convention used in dynamics simulation output (see list of output signals in Table 14-2 in PSS/E V32 Operation Manual). Mechanical power is given in pu on machine MVA base (MBASE) while electrical power is expressed on system MVA base (SYSMVA=100 MVA by default). For example, a 500 MVA machine with 0.8 pu mechanical power (i.e. 0.8x500=400 MW) will have electrical power equal to 4 pu (on 100 MVA basis), if losses are neglected.

edit flag offensive delete link more

Your Answer

Please start posting anonymously - your entry will be published after you log in or create a new account.

Add Answer

[hide preview]

Question Tools


Asked: 2016-03-30 03:41:23 -0500

Seen: 1,626 times

Last updated: Apr 14 '16