Pilot Bus and Slack Bus

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Anonymous Poster	Pilot Bus and Slack Bus 10/05/2010 5:09 AM
	Are the pilot bus and slack bus the same or there is a difference?
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PWSlack Guru Join Date: Jan 2007 Location: In the bothy, 7 chains down the line from Dodman's Lane level crossing, in the nation formerly known as Great Britain. Kettle's on. Posts: 32175 Good Answers: 839	#1 Re: Bus. 10/05/2010 6:48 AM
	What a personal question! __________________ "Did you get my e-mail?" - "The biggest problem in communication is the illusion that it has taken place" - George Bernard Shaw, 1856
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Mikerho Guru Join Date: Jan 2007 Location: Moses Lake, WA, USA, Thulcandra - The Silent Planet (C.S. Lewis) Posts: 4216 Good Answers: 194	#2 In reply to #1 Re: Bus. 10/05/2010 7:26 AM
	So this must be the slack bus. Nice ride! __________________ "Reason is not automatic. Those who deny it cannot be conquered by it. Do not count on them. Leave them alone." - Ayn Rand
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msamad Guru Join Date: Feb 2009 Location: Houston, USA Posts: 946 Good Answers: 244	#3 Re: Pilot Bus and Slack Bus 10/05/2010 7:39 PM
	In the power system, the pilot bus and slack bus are not the same. Slack bus is the reference bus for the load flow calculation in power system. It is also known as swing bus or reference bus. Generally it is the bus to which the largest generator of the system is connected and its governor is set to isochronous mode (see http://cr4.globalspec.com/thread/42805 for isochronous mode) for load control. The Pilot bus refers to the set of Voltage Controlled buses (or Generator bus or PV bus) used for the zonal system voltage control for the Secondary Voltage Regulation (SVR) system. Sometimes, it is also called weak bus or critical bus. For more detail, see these links: http://cr4.globalspec.com/thread/53251/Power-System http://thunderbox.uwaterloo.ca/~ccanizar/papers/BoIREP.pdf http://wvuscholar.wvu.edu:8881//exlibris/dtl/d3_1/apache_media/21241.pdf - MS __________________ "All my technical advices in this forum must be consulted with and approved by a local registered professional engineer before implementation" - Mohammed Samad (Linkedin Profile: http://www.linkedin.com/in/msamad)
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