Problems in the simulation of generator frequency about andes HOT 8 CLOSED

Check this example, https://docs.andes.app/en/latest/_examples/ex9.html

from andes.

Here is the program.

import andes
import matplotlib
import matplotlib.pyplot as plt
ss = andes.load(andes.get_case("ieee14/ieee14_full.xlsx"), setup=False, default_config=True)
ss.setup()
ss.PQ.config.p2p = 1
ss.PQ.config.q2q = 1
ss.PQ.config.p2z = 0
ss.PQ.config.q2z = 0
ss.PQ.pq2z = 0
ss.PFlow.run()
ss.TDS.config.tf = 7
ss.TDS.config.criteria = 0
ss.TDS.run()
ss.GENROU.set(src='u', idx='GENROU_3', attr='v', value=0.6)

ss.TDS.config.tf = 55
ss.TDS.config.criteria = 0
ss.TDS.run()

matplotlib.use('TkAgg')

ss.TDS.load_plotter()
ss.TDS.plt.plot(ss.GENROU.omega,a=(0, 1, 2, 3, 4), ylabel="Generator Frequency(Hz)",grid=True,ytimes=60)
ss.TDS.run()

from andes.

I don't think this is a bug. You might need to check ss.GENROU.set(src='u', idx='GENROU_3', attr='v', value=0.6). I am confused about this.

from andes.

I don't think this is a bug. You might need to check ss.GENROU.set(src='u', idx='GENROU_3', attr='v', value=0.6). I am confused about this.

Thank you for your response. Maybe my expression is wrong. I use “ss.GENROU.set(src='u', idx='GENROU_3', attr='v', value=0.6)” to achieve the GENROU3 to increase the active power of 0.2p.u. at 7s(The original active power of the GENROUr is 0.4p.u.). How to achieve it, please?

from andes.

u is connectivity status that should only be 0 or 1. Setting u to non-binary values will lead to unexpected results.

from andes.

u is connectivity status that should only be 0 or 1. Setting u to non-binary values will lead to unexpected results.

Thank you for your response. What statement should be used to change the active power of the GENROU at a certain moment, please?

from andes.

See the link Jinning shared. I'd like to add that active power output is a dependent variable of the stator voltages and currents. One cannot directly change the power output; it has to go through the references, either by changing the setpoint at turbine governors or at the generator (only when turbine governor is not connected for that generator).

from andes.

Closing the issue for now due to lack of activity. Feel free to re-open it or post updates to Discussions.

from andes.