Affonso Ribeiro

Hello, how are you? I am conducting an optimization study on the parameters of volt-var and volt-watt control curves for photovoltaic inverters. I have the attached system implemented (only the DG implementation) in OpenDSS + Python, where I run the simulation, collect the voltages for each hour, and based on that, using a genetic algorithm, I try to optimize the parameters of the inverter control's XYCurve. Overall, I have already verified that I am successfully updating the curve values (Xarray)...

I am performing a heuristic optimization for voltage control in an electrical distribution network through the “dispatch” of reactive power from photovoltaic inverters, in the context of distributed generation. Below is my current parameter model. To control the injection/absorption of reactive power, I need to control the inverter variable PF (power factor), where a negative value indicates reactive power absorption and a positive value indicates reactive power injection. Is that correct? If you...

I am performing a heuristic optimization for voltage control in an electrical distribution network through the “dispatch” of reactive power from photovoltaic inverters, in the context of distributed generation. Below is my current parameter model. To control the injection/absorption of reactive power, I need to control the inverter variable PF (power factor), where a negative value indicates reactive power absorption and a positive value indicates reactive power injection. Is that correct? If you...

I am performing a heuristic optimization for voltage control in an electrical distribution network through the “dispatch” of reactive power from photovoltaic inverters, in the context of distributed generation. Below is my current parameter model. To control the injection/absorption of reactive power, I need to control the inverter variable PF (power factor), where a negative value indicates reactive power absorption and a positive value indicates reactive power injection. Is that correct? If you...

Hello everyone, how are you? First of all, Merry Christmas and Happy New Year to you and your families. I am currently modeling a genetic algorithm to reduce voltage variation, based on the settings of OLTCs, voltage regulators, photovoltaic inverters, etc. I would like to know what the difference is between using a transformer with regulation control (OLTC) and simply changing the system supply voltage (using the "pu" variable from our "New Circuit" object) . Is there a practical difference between...

Thanks a lot Davis!

Hi everyone, how’s it going? I’m currently doing some studies, one of them on the IEEE 8500 network and another on this 23-bus network that I’m attaching. I’m trying to simulate a power flow reversal caused by distributed generation connected at bus 123 (at the end of the line). I installed a voltage regulator that is controlling the voltage at bus 120. I found it strange because I expected the power flow reversal to disrupt the voltage control, but as you can see in the image, the voltage control...

Hello, how are you? I am running some simulations with the IEEE 8500 Nodes network and I would like to clarify two doubts: Why is "0.48 kV" declared as the voltage in the "master" file, if all the loads are at 0.208 kV and the medium-voltage network is at 12.47 kV? ... Redirect Regulators.dss Set voltagebases=[115, 12.47, **0.480**, 0.208] Calcvoltagebases ... Attached to this comment, I am posting a plot from a monitor connected to the first line of the system (LN5710794-3), to check the total power...