How to monitor induction machine speed deviation?

asked 2019-12-12 13:34:39 -0600

bikiran1991
47 ●25 ●28 ●31

I have some CIM5BL models in the dyr file. While adding the output channel, i want to monitor their speed deviations. Is there any other way to do this besides using:
psspy.state_channel()

I was looking for something systematic, where i can input the corresponding load bus number and state index, instead of having to track the state index of the induction machine, from the entire state space. For example, when monitoring the speed deviation of a generator i can use something like:
psspy.machinearraychannel(status, id, ident) and provide the machine bus no., machine id and the index for Speed deviation.

Is there anything similar for induction machines?

answered 2019-12-13 00:23:49 -0600

perolofl

3332 ●1 ●8 ●19

You can write your own API:

 def add_load_channels(ibus,id,indx,ident):
    """ Adds a STATE channel for a bus load model
    ibus = load bus (integer)
    id = load id (string)
    indx = state index (0,1,2,3 etc) (integer)
    ident = identifier for the STATE channel (string)
    """
    ierr, k = psspy.lmodind(ibus, id, 'CHARAC', 'STATE')
    psspy.state_channel([-1,k+indx],ident)

Add a load characteristic model channel with:

add_load_channels(3005,'1',4,'SPEED IM 1 at 3005')

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How to monitor induction machine speed deviation?

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