How to Calculate Positive and Zero-Sequence Resistance and Reactance?

7 comments

esbolpro Participant Join Date: Apr 2017 Posts: 2	How to Calculate Positive and Zero-Sequence Resistance and Reactance? 04/01/2017 4:42 PM
	Hello there! Given cable thickness, is it possible to calculate the positive- and zero-sequence resistance and reactance of the cables required to perform power flow analysis? The utility company has provided me with .DWF file with GIS and cable characteristics. The following parameters are taken from .dwf file LVAerialLine,ByPassFeederNo: no LVAerialLine,CSABlue: no LVAerialLine,CSANeutral: 70Cu Bare LVAerialLine,CSARed: no LVAerialLine,CSASL: 35Cu PVC LVAerialLine,CSAYellow: 70Cu PVC LVAerialLine,FeatId: 41595 LVAerialLine,FeederNo: 2 Your help is greatly appreciated. Thank you!
	Register to Reply
	Pathfinder Tags: calculate reactance calculate resistance calculation reactance resistance

Interested in this topic? By joining CR4 you can "subscribe" to
this discussion and receive notification when new comments are added.

JPool Guru Join Date: Apr 2012 Location: Detroit MI, USA Posts: 2496 Good Answers: 269	#1 Re: How to calculate positive- and zero-sequence resistance and reactance? 04/01/2017 4:52 PM
	yes __________________ How we deal with death is at least as important as how we deal with life. --CAPTAIN KIRK, Star Trek II: The Wrath of Khan
	Register to Reply

RAMConsult Guru Join Date: May 2007 Location: NYC metropolitan area. Posts: 3230 Good Answers: 444	#2 Re: How to calculate positive- and zero-sequence resistance and reactance? 04/01/2017 4:57 PM
	No, you also need to know the configuration and spacing of the individual conductors. __________________ “Tell me and I forget. Teach me and I remember. Involve me and I learn.” Ben Franklin.
	Register to Reply

esbolpro Participant Join Date: Apr 2017 Posts: 2	#6 In reply to #2 Re: How to calculate positive- and zero-sequence resistance and reactance? 04/08/2017 11:42 AM
	Once the spacing is available, how do i proceed?
	Register to Reply

SolarEagle Guru Join Date: Mar 2007 Location: by the beach in Florida Posts: 32541 Good Answers: 1782	#3 Re: How to Calculate Positive and Zero-Sequence Resistance and Reactance? 04/02/2017 12:10 AM
	http://wiki.openelectrical.org/index.php?title=Main_Page __________________ All living things seek to control their own destiny....this is the purpose of life
	Register to Reply

7anoter4 Guru Join Date: Oct 2012 Location: 100 miles North from the World Center Posts: 869 Good Answers: 42	#4 Re: How to Calculate Positive and Zero-Sequence Resistance and Reactance? 04/05/2017 5:09 AM
	See-for instance: IEC 60909-2 2.4 Data on typical overhead lines, single and double circuits https://www.unioviedo.es/pcasielles/uploads/proyectantes/cosas_lineas.pdf https://www.rd.usda.gov/files/UEP_Bulletin_1724E-200.pdf https://www.crcpress.com/Electric-Power-Distribution-Handbook-Second-Edition/Short/p/book/9781466598652 2.3 Line Impedances __________________ Julius
	Register to Reply

7anoter4 Guru Join Date: Oct 2012 Location: 100 miles North from the World Center Posts: 869 Good Answers: 42	#5 Re: How to Calculate Positive and Zero-Sequence Resistance and Reactance? 04/05/2017 5:14 AM
	Also: https://www.academia.edu/6746956/Book_electric_power_distribution_handbook_alimuddin_jte __________________ Julius
	Register to Reply

7anoter4 Guru Join Date: Oct 2012 Location: 100 miles North from the World Center Posts: 869 Good Answers: 42	#7 Re: How to Calculate Positive and Zero-Sequence Resistance and Reactance? 04/10/2017 12:52 PM
	In my opinion it is about LT AERIAL BUNCHED CABLE of 1 live 1 neutral 1 street lighting. Usually the rated voltage is 1.1 kV and the insulation is about 1.5-2 mm thick. Approximate, according to BS7671 Table 4D2B 70oC 70mm^2 copper 2 conductors 50 Hz r=0.63 ohm/km [two wires go and forth] x=0.160 ohm/km. If the messenger is grounded[earthed] then the Xo reactance could be the same. The Ro depends on messenger resistance. For ACSR 7/1 it could be 0.5 ohm/km __________________ Julius
	Register to Reply

Interested in this topic? By joining CR4 you can "subscribe" to
this discussion and receive notification when new comments are added.