ms. Su
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« on: September 09, 2010, 05:27:49 PM » |
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mga Boss! is there anyone can help me about transmission line? project kc nmin is gumwa ng transmission line, details: 200 km ( from masinloc zambales to manila) 500 MVA im not sure how to start.. san b kme mgstart?.. we have our map na.
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« on: September 09, 2010, 05:27:49 PM » |
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piona
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« Reply #1 on: September 09, 2010, 05:41:37 PM » |
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kayo ba ang magdecide sa boltahe?
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love without accomplishing the laws, is complicated - sshrekk
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« Reply #2 on: September 10, 2010, 10:51:23 AM » |
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mga Boss! is there anyone can help me about transmission line? project kc nmin is gumwa ng transmission line, details: 200 km ( from masinloc zambales to manila) 500 MVA im not sure how to start.. san b kme mgstart?.. we have our map na.
paano ung right-of-way? meron na ba? paki post mo rin ung related provisions ng Certificate of Public Convenience and Necessity dito.
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ms. Su
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« Reply #3 on: September 11, 2010, 05:12:55 PM » |
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uhmm.. opo kme mgde2cide sa lhat.. hehe sbe ng prof nmin mgstart kme sa spacing ng conductors eh.. hanap po muna ako ng conductor nmin db?
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piona
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« Reply #4 on: September 11, 2010, 05:48:07 PM » |
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wala kapang boltahe ano babasihan mo sa spacing at conductor?  ...decide muna kayo ano ang boltahe ng transmission line nyo  dito kayo magsimula  consider nyo na lahat sa pagdecide ng boltahe.
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motion55
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« Reply #5 on: September 11, 2010, 06:30:18 PM » |
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Calculate the distributed inductance, capacitance and resistance for the 200KM distance. You can do that if you know the average spacing of the conductors and the size of the conductors. After all, they are transmission lines and they behave as such. http://en.wikipedia.org/wiki/Transmission_lineResearch ninyo ang mga standard sizes for such transmission lines that is enough to send 500MVA. You assume the voltage at one end to be a fixed voltage and estimate the voltage at the other end given the calculated L, C, R values above for different power factors. http://en.wikipedia.org/wiki/Aluminium_Conductor_Steel_Reinforced
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piona
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« Reply #6 on: September 11, 2010, 07:45:18 PM » |
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eto standard voltage ng mga transmission line dito sa bansa natin
13.8kv, 69kv, 115kv, 138kv, 230kv, 500kv try figure out ano ang mabuti economically at reliability
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ms. Su
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« Reply #7 on: September 11, 2010, 11:37:09 PM » |
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Calculate the distributed inductance, capacitance and resistance for the 200KM distance. You can do that if you know the average spacing of the conductors and the size of the conductors. After all, they are transmission lines and they behave as such. http://en.wikipedia.org/wiki/Transmission_lineResearch ninyo ang mga standard sizes for such transmission lines that is enough to send 500MVA. You assume the voltage at one end to be a fixed voltage and estimate the voltage at the other end given the calculated L, C, R values above for different power factors. http://en.wikipedia.org/wiki/Aluminium_Conductor_Steel_ReinforcedThank u very much! It helps a lot.. godbless.. eto standard voltage ng mga transmission line dito sa bansa natin
13.8kv, 69kv, 115kv, 138kv, 230kv, 500kv try figure out ano ang mabuti economically at reliability
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piona
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« Reply #8 on: September 12, 2010, 05:49:16 AM » |
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yong 200kms na given, circuit kms na ba yon? o highway distance?
layout kayo through maps kung saan nyo padadaanin ang transmission lines para makuha nyo ang total ckt kms, tapos draw kayo ng terrain contour map from end to end para ma-estimate nyo ang total length ng transmission line stringing that will include the sag depende sa contour ng terrain na pagdadaanan.
then compute for line ampacity depende sa boltahe na gagamitin, considering the economy and reliability.
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piona
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« Reply #9 on: September 12, 2010, 06:36:33 AM » |
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hint : considering the 500mva line capacity nasa 115kv or 138kv ang ideal voltage. consider also using double circuit or two bundled conductors transmission lines. when layouting transmission lines go for the straight and shortest distance, but consider the 'right of way' na matatamaan. baka magtraverse yang linya nyo sa centro ng isang commercial center 
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piona
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« Reply #10 on: September 12, 2010, 08:19:23 AM » |
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eto para ala kayong problema....pagtinanong kayo, saan nyo nakuha mga formula nyo? sabihin nyo sa prof nyo, sa very experienced transmission line designer, sire!! http://www.mediafire.com/?2qazv818oc7lo8dgood luck sa project nyo ms. Su  ps ms. pa po ba kayo? nnyaahaha! 
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love without accomplishing the laws, is complicated - sshrekk
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iyo karpo
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« Reply #11 on: September 12, 2010, 10:57:46 AM » |
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Bago mo ma-umpisahan ung project...may processo yan sa ERC. Normally may load forecasting, system stability and reliability study na ginawa ang transmission company, bago to ma-decisionan. i-determine mo pa ung right-of-way, bago mo ma-gawa ang mapa. Gagawa ang Civil engineers ng soil testing at contour survey sa area kung saan locations ng mga towers. Meron ding environmental impact study na i-submit mo sa ERC at Dept of Environment. at marami pang iba...
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ms. Su
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« Reply #12 on: September 12, 2010, 08:22:35 PM » |
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eto para ala kayong problema....pagtinanong kayo, saan nyo nakuha mga formula nyo? sabihin nyo sa prof nyo, sa very experienced transmission line designer, sire!! http://www.mediafire.com/?2qazv818oc7lo8dgood luck sa project nyo ms. Su  ps ms. pa po ba kayo? nnyaahaha!  Ms. pa po pro taken na.. nyahhaha thanku sa info.. sa uulitin! malaking tulong ang lahat ng ito..  Bago mo ma-umpisahan ung project...may processo yan sa ERC. Normally may load forecasting, system stability and reliability study na ginawa ang transmission company, bago to ma-decisionan. i-determine mo pa ung right-of-way, bago mo ma-gawa ang mapa. Gagawa ang Civil engineers ng soil testing at contour survey sa area kung saan locations ng mga towers. Meron ding environmental impact study na i-submit mo sa ERC at Dept of Environment. at marami pang iba...
maraming salamat po! 
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piona
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« Reply #13 on: September 17, 2010, 09:03:17 AM » |
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transmission x
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« Reply #14 on: September 21, 2010, 11:49:28 AM » |
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wow. galing naman. @phiona, TL engineer po kayo? nice to meet someone on this forum. newbie po ako dito. 5 years in TL design.  comment naman po kayo sa plano ko http://transmissiondesignhub.blogspot.com/
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Let them taste real power!
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transmission x
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« Reply #15 on: September 21, 2010, 11:51:08 AM » |
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ms su, kindly send me your up, include the contours and distances if possible, then i'll give you a complete design (as guide po not as finish product) for your project. http://transmissiondesignhub.blogspot.com/
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Let them taste real power!
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piona
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« Reply #16 on: September 21, 2010, 06:32:28 PM » |
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part lang sa trabaho ko ang transmission lines...not really an expert 
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