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Why is H.V used for the transfer of electricity from power plants?

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تم إضافة السؤال من قبل farag farag ibrahim el hamaky , Senior Electrical Engineer , Archen Engineering Consultants
تاريخ النشر: 2013/04/29
Akhtar Masood
من قبل Akhtar Masood , Dispatch Specialist , Abu Dhabi Transmission & Dispatch Company

Electricity is transmitted on HV to reduce transmission losses; which is proportional to square of current.
Current is inversely proportional to voltage; the higher the voltage lower will be current.
In return lower current will result in lower power loss.
Similarly less current flow will help to reduce the conductor size and make it economical.

Muhammad Adnan Arain
من قبل Muhammad Adnan Arain , Electrical Engineer , Rafhan Maize Products Co.Ltd Incorporate Ingredion

After power generation step up transformer use it step up voltage level 11kv or 25kv to 220kv or 500kv because increase the voltages to reduce the power loss Ploss=Squre of current * conductor resistance =(P/V)2* r

farag farag ibrahim el hamaky
من قبل farag farag ibrahim el hamaky , Senior Electrical Engineer , Archen Engineering Consultants

we use high voltage for power transmission because: 1-reduce the crose section of cable (cable size) .

2- reduce the power losses.

3- reduce the cost .
4-easy to use step-down transformers at destination.

Ammad Yousaf
من قبل Ammad Yousaf , Senior Engineering Team Leader , National Engineering Services Pakistan (NESPAK)

for the specific MW, at high voltage, current is low..... at low current we need conductor of Small dia ultimately economical it is.

 

Zia Ullah Baig
من قبل Zia Ullah Baig , Owner , Northern Technologies.

Because there is no other way to transmitt bulk of power to remote areas.

Mohammad Awad
من قبل Mohammad Awad , Technical Engineer , Saudi Bin Ladin Group

To reduce power losses coz P(losses)=IR and when we increase the volt the current will be decreased (Ohm Law) and this cause reducing in power losses

thomas chacko
من قبل thomas chacko

reduces heat losses, ie I square losses.
H=I^2 R, as voltage increases, current reduces in a step up transformer thus reducing the current and hence the losses.

sathiskumar Marimuthu
من قبل sathiskumar Marimuthu , Associate Professor , P A college of Engineering and Technology

to reduce power loss

to reduce cost

Muhammad Waseem
من قبل Muhammad Waseem , Assistant Manager , Hisooper Gas Pvt Ltd Nankana Sahib

To reduce the line losses i2r losses.
voltage is stepped up and current reduced decreasing the line losses

Ir Muhamad Apriyudi Syafputra IPM ASEAN Eng
من قبل Ir Muhamad Apriyudi Syafputra IPM ASEAN Eng , Sr Electrical Engineer , Pertamina Rosneft

Electricity deliver from power plant have big capacity shall use H.V because to reduce losses in cable transmission.

Safi Ullah
من قبل Safi Ullah , Electrical Trainee Engineer , PESCO (Peshawar Electric Supply Company)

To decrease current.....................

decrease losses........................

decrease conductor material....................

decrease size of poles................................

in short decrease cost......................

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