PSCAD Q&A
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enPSCAD Q&AMon, 09 Dec 2019 06:34:56 -0500http://forum.hvdc.ca/2481070/How-to-take-the-data-from-harmonic-plot
http://forum.hvdc.ca/2481070/How-to-take-the-data-from-harmonic-plot
minhquan1210plotharmonicsdataHow to take the data from harmonic plot?Good morning,<br />I would like to know, how to get the data from the harmonic plot in PSCAD?.<br />Normally, with another graph just right-click and "copy data to clipboard" so I can copy the data<br />But with the harmonic plot (likes below picture), I can't do the same way.<br />So, would you tell me how to get the data?<br /><a class="fancybox" href="http://forum.hvdc.ca/file/image?relativeUrl=UserFiles/Answers201808/questionImage1979984-01022744-full.jpg&postId=2481070" rel="nofollow"><img src="http://forum.hvdc.ca/file/image?relativeUrl=UserFiles/Answers201808/questionImage1979984-01022744.jpg&postId=2481070" /><br /></a>Thank you for your support!Wed, 01 Aug 2018 02:32:09 -0400http://forum.hvdc.ca/2481070/How-to-take-the-data-from-harmonic-plot#commentshttp://forum.hvdc.ca/2456074/Resonances-at-frequencies-as-couples-of-400-Hz
http://forum.hvdc.ca/2456074/Resonances-at-frequencies-as-couples-of-400-Hz
TransnetBW_GmbHresonancefftharmonicssolution time stepPositive sequencenegative sequenceResonances at frequencies as couples of 400 Hz<p 0cm 0cm 13pt;"><a name="_GoBack"></a><span lang="EN-US" EN-US;"> Hey, </span></p><p 0cm 0cm 13pt;"><span lang="EN-US" EN-US;"> The goal is to analyze the impact of the disturbance voltages on the impedances of the harmonics in the positive and negative sequence. Therefore, I have implemented a Multiple Run Simulation and I am changing the frequency in the single line voltage sources to multiples of my base frequency, e.g. 50 Hz. Moreover, I change the phase in the second and third voltage source to +120° and -120°, respectively, to disturb the system in the negative or positive sequence. The goal is to analyze the impact of the disturbance voltages on the impedances of the harmonics in the positive and negative sequence (via FFT). You can find a screenshot of the grid and the results attached. Unfortunately, I have very large impedances in the negative sequence (when I disturb the system in the positive sequence and vice versa) when the frequencies of the disturbance voltage sources are couples of 400 Hz, although I shouldn´t have a (large) impedance during a stimulation in the positive sequence in the negative sequence. It looks like as if there is a resonance for these frequencies in the grid but I do not know where/why. Furthermore, I recognized that I can improve the results when I reduce the Solution Time Step. Do you have any idea what the problem is?<br /> <br /> Thanks a lot in advance!<br /> <br /> Best,<br /> <br /> Niklas </span></p>Wed, 06 Jun 2018 12:16:21 -0400http://forum.hvdc.ca/2456074/Resonances-at-frequencies-as-couples-of-400-Hz#commentshttp://forum.hvdc.ca/2350986/I-have-attached-harm-out-file
http://forum.hvdc.ca/2350986/I-have-attached-harm-out-file
kuchowharmonicsI have attached harm.out fileI have attached harm.out file in the thread. How can you use Excel to plot the frequency?Mon, 02 Oct 2017 00:01:04 -0400http://forum.hvdc.ca/2350986/I-have-attached-harm-out-file#commentshttp://forum.hvdc.ca/2350890/Harmonics-Impedance-Output
http://forum.hvdc.ca/2350890/Harmonics-Impedance-Output
kuchowharmonicsHarmonics Impedance OutputWhat are the two other lines in the harmonics component output? and how do you plot this using Excel?<br /><br /> F(Hz) [|Z|(ohms) PHASE(Z)(Deg)]<br /> 0.10000000000000 15.314612339129 6.6074739324209 <br /> 1.5578982608877 84.728672623839 15.314612339137 6.6074739324178 <br /> 1.5578986723152 84.728688087935 1.5578986723144 84.728688088226 15.314611674981 6.6074772641241 <br /> 50.099500000000 40.416974788960 -54.022921869930 <br /> 9.9619333460143 5.9708023408762 40.416974637338 -54.022921512528 <br /> 9.9620102176402 5.9710351827363 9.9620100751396 5.9710337024460 40.416864880324 -54.022624448631 <br /> 100.09900000000 59.291246016779 -22.049595343084 <br /> 9.8251459186810 176.52391765200 59.291246016779 -22.049595343086 <br /> 9.8251223378056 176.52368121293 9.8251223378094 176.52368121293 59.291069107666 -22.050048462824 <br /> 150.09850000000 34.200006216697 -8.7266992588066 <br /> 5.4928667981012 -102.24383842397 34.200006216629 -8.7266992587833 <br /> 5.4929038047689 -102.24383089641 5.4929038047789 -102.24383089570 34.200237966579 -8.7270052840668 <br /> 200.09800000000 31.302603582611 -20.104255583844 <br /> 1.1755322028407 -84.055593827729 31.302603582595 -20.104255583917 <br /> 1.1755690476167 -84.055813117193 1.1755690475884 -84.055813115633 31.302668898695 -20.104226906511 Sun, 01 Oct 2017 18:42:42 -0400http://forum.hvdc.ca/2350890/Harmonics-Impedance-Output#commentshttp://forum.hvdc.ca/2345804/How-can-I-measure-harmonics-on-DC-lines-in-PSCAD-What-component-in-the-PSCAD-library-should-I-use-Thanks-so-much
http://forum.hvdc.ca/2345804/How-can-I-measure-harmonics-on-DC-lines-in-PSCAD-What-component-in-the-PSCAD-library-should-I-use-Thanks-so-much
luukimtuanticharmonicsMMCHVDCPSCADHow can I measure harmonics on DC lines in PSCAD? What component in the PSCAD library should I use? Thanks so muchI have built a two-terminal MMC-HVDC system in PSCAD software. I need to measure harmonics on DC lines of the system. I have used the On-Line Frequency Scanner (FFT) and the Harmonic Distortion Calculator components but the results look abnormal. I wonder whether using these components to measure harmonics on DC lines is right or not. Thanks a lot for your helps!<br> <br> Mon, 18 Sep 2017 23:30:30 -0400http://forum.hvdc.ca/2345804/How-can-I-measure-harmonics-on-DC-lines-in-PSCAD-What-component-in-the-PSCAD-library-should-I-use-Thanks-so-much#commentshttp://forum.hvdc.ca/2217087/Could-I-please-get-your-help-with-impedance-spectrum-of-a-cable
http://forum.hvdc.ca/2217087/Could-I-please-get-your-help-with-impedance-spectrum-of-a-cable
USUPSCADPSCADimpedance spectrumharmonicsCould I please get your help with impedance spectrum of a cable?Dear Sir, <br /><br />I am trying to evaluate the impedance spectrum of a cable by inserting a multiple harmonic current source in parallel to a voltage source. I am unable to perform the simulations and getting the following message <br /><br />I will appreciate your help to resolve this issue. <br /><br /><table><thead><tr><th>Type</th><th>Id</th><th>Component</th><th>Namespace</th><th>Description</th></tr></thead><tbody><tr><td> </td><td>2010287119</td><td>master:cinj</td><td>Cable_frequ_depen_impedance</td><td>Branch path is shorted -> BRB = 0 $B BREAKER 1.0</td></tr></tbody></table><table><thead><tr><th>Type</th><th>Id</th><th>Component</th><th>Namespace</th><th>Description</th></tr></thead><tbody><tr><td> </td><td>631871016</td><td>master:ammeter</td><td>Cable_frequ_depen_impedance</td><td>Branch path is shorted -> BN = $N1 $N2 AMMETER</td></tr></tbody></table>Mon, 19 Dec 2016 12:27:27 -0500http://forum.hvdc.ca/2217087/Could-I-please-get-your-help-with-impedance-spectrum-of-a-cable#commentshttp://forum.hvdc.ca/2216189/Impedance-Spectrum-of-a-cable
http://forum.hvdc.ca/2216189/Impedance-Spectrum-of-a-cable
USUPSCADcable impedanceimpedance spectrumharmonicsImpedance Spectrum of a cableI am trying to evaluate the impedance spectrum of a cable by inserting a multiple harmonic current source in parallel to a voltage source. I am unable to perform the simulations and getting the following message <br /><br />I will appreciate your help to resolve this issue. <br /><br /><table><thead><tr><th>Type</th><th>Id</th><th>Component</th><th>Namespace</th><th>Description</th></tr></thead><tbody><tr><td> </td><td>2010287119</td><td>master:cinj</td><td>Cable_frequ_depen_impedance</td><td>Branch path is shorted -> BRB = 0 $B BREAKER 1.0</td></tr></tbody></table><table><thead><tr><th>Type</th><th>Id</th><th>Component</th><th>Namespace</th><th>Description</th></tr></thead><tbody><tr><td> </td><td>631871016</td><td>master:ammeter</td><td>Cable_frequ_depen_impedance</td><td>Branch path is shorted -> BN = $N1 $N2 AMMETER</td></tr></tbody></table>Fri, 16 Dec 2016 13:37:25 -0500http://forum.hvdc.ca/2216189/Impedance-Spectrum-of-a-cable#commentshttp://forum.hvdc.ca/1208667/I-need-to-know-about-working-of-online-frequncy-scanning-and-fft-block-in-PSCAD
http://forum.hvdc.ca/1208667/I-need-to-know-about-working-of-online-frequncy-scanning-and-fft-block-in-PSCAD
krishipipaliyafftharmonicsdc componentsfftharmonicsdc componentsfftharmonicsdc componentsfftharmonicsdc componentsfftharmonicsdc componentsI need to know about working of online frequncy scanning and fft block in PSCAD.Hello,<br />I am Post Graduate student and I need help for my dissertation work.<br />I am working on digital distance relay so I need to know detailed working of fft block.<br />I require the number of samples it takes for calculation of fft algorithm for an output,how it eliminate the harmonics and smoothen the distorted waveform of fault current.<br />Is it able to remove DC components?Tue, 30 Sep 2014 03:15:12 -0400http://forum.hvdc.ca/1208667/I-need-to-know-about-working-of-online-frequncy-scanning-and-fft-block-in-PSCAD#comments