Recent content by rain2359

Hi, thanks for the reply. May I know, if I am working using the FFT, which means the z-domain, does it still holds that if my system is not linear, there will not be able to have any frequency domain response to describe my system? Thanks.

Hi, Does anyone knows how to prove that a potential transformer is a linear system or not? Can I use principle of superposition with time-domain impulse to prove it? Is there other ways other than the principle of superposition to prove linearity of a potential transformer? Is there a way to...

It is for undergraduate final year project, B.Eng course. Basically, my school does not provide specific transformer course, however, you might want to visit the school's website for more information,

hi, May I know if we were to pass a signal into a 5th order butter worth filter, why would its magnitude decrease? Should the magnitude decrease, or it should remain the same? thank you.

Hi PnCTech, Actually the objective of this project is to understand if the PT is working perfectly even under frequency other than the norminal frequency. I am just trying to find out more about the PT so that I can create a simulation such that I can see if under any transient(which would...

oh, that is how it works. Then may I know if let say the PT is used for metering purpose, but not fault detection, would the measurement of the PT be affected if there is a transient? Does it have to be at the substation level of 230kV for fault detection? Say for the PT of 22kV/110V, could...

how would the PT and the CVT know that there is fault? What will be shown in the PT that indicate that fault had occured. The PT is connected in parallel with the transmission line right? Then say if at the customer end there is a fault that cause transient to the upper stream of the...

Hi, may I know 1. how will the fault in the power system be detected using PT of higher than 230kV? 2. if there is a fault occurred or any disturbance that cause transient, then would the PT ( less than 230kV) be affected? if yes, how is it affected? 3. I am currently trying to run a...

Hi, may I know how are they actually used in metering? Are the potential transformer used to measure the voltage carried across the transmission line? Do you know where I can find any circuit diagram to show how the potential transformer is connected in the substation? Thank you very much.

hi, May I know does anyone knows the industrial usage of the potential transformer and probably how it is connected? Thanks.

still trying to work out the MATLAB to see the waveform, need some help in MATLAB before i am able to post the waveform, when i draw the circuit out, shall post it here. Thanks.:)

hmm.. can't actually use a charge pump, because the experiment is done in the lab and the lab does not have a charge pump, and can't buy it as well due to certain reason. Had actually solved the problem, Thank everyone for your help. :)

hmm, but we measure the voltage, its 7kV ... but not 3kV... hmm..

hi, I am actually using 15 stages of multiplier, I am sure that I am not violating their reverse voltage spec, my input voltage is around 200V. May I know if there would be any problem if I were to continue to use this kind of multiplier? What are the other solutions that I can do? Thank you...

Hi, I am currently working on high voltage system, where I need to create an impluse at the primary side of a potential transformer. I am trying to charge my circuit to at least 10kV using a half wave series voltage mutliper consisting of capacitors and diodes, and discharging them through...