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Fast valving initiation

asked 2018-10-09 11:44:46 -0500

kjlakmewan gravatar image

updated 2018-10-12 00:29:08 -0500

I'm using governor model TGVO2 for steam turbine. It has a function of fast valving. I want to know how can i actuate (or initiate) fast valving.

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answered 2018-10-10 12:11:38 -0500

perolofl gravatar image

VAR(L+1) specifies the time for initiating fast valving.

At initialisation of simulation VAR(L+1) is set to 9999 by PSSE. Change the value to the wanted time for start of fast valving. For example 1.3 if you want to initiate at time=1.3 s.

In a script use API:

psspy.change_plmod_var(ibus, id, ’TGOV2’, 2, 1.3)

After that you just run the simulation.

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Thank you for the reply. Can you elaborate what is called by VAR(L+1)

kjlakmewan gravatar imagekjlakmewan ( 2018-10-11 01:38:50 -0500 )edit

Model TGOV2 uses two VARS, see the datasheet for the model. The VAR controls at what time the fast valving shall be initiated.

perolofl gravatar imageperolofl ( 2018-10-11 02:45:22 -0500 )edit

Now it is successfully triggered for given time in API. Now i want to trigger this fast valving for a given frequency value. Is it possible??

kjlakmewan gravatar imagekjlakmewan ( 2018-10-13 07:38:57 -0500 )edit

Yes it is. Write a User model that trigs the VAR when the frequency reaches the given value.

perolofl gravatar imageperolofl ( 2018-10-13 12:37:38 -0500 )edit

I have two more thing to clarify, 1. Once FV is activated when frequency exceed a certain value, is there a way to deactivate FV when frequency decrease.

kjlakmewan gravatar imagekjlakmewan ( 2018-10-20 21:02:50 -0500 )edit

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Asked: 2018-10-09 11:44:46 -0500

Seen: 44 times

Last updated: Oct 12 '18

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