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2016-10-04 04:56:32 -0500 | received badge | ● Necromancer (source) |
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2016-05-22 10:59:03 -0500 | answered a question | low pass filter design using python Hi, You can try this simplest implementation. This function should be called from a time loop implemented in a Python script. If you for example want to filter the frequency deviation signal dfreq using a PT1 filter with time constant 10 seconds and discretization time of 20 ms and you are going to store the filtered value as dfreqf, that call might look something like this: Of course the basic time step in PSS/E dynamic simulation must be less or equal to filter discretization time and the initial frequency deviation is assumed to be zero. |
2016-04-08 11:15:15 -0500 | received badge | ● Editor (source) |
2016-04-07 15:30:09 -0500 | answered a question | Electrical and Mechanical Power 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. |
2016-01-04 06:51:08 -0500 | answered a question | How to get the list of Machine inertia from PSSE? Hi, instead reading the .dyr file you can retrieve the required values from internal dynamic data arrays. General idea is presented below (not the most elegant code but it serves its purpose). Hope this would help. |