The HVDC Leyte–Luzon is a high voltage direct current transmission link in the Philippines

Philippines

The Philippines , officially known as the Republic of the Philippines , is a country in Southeast Asia in the western Pacific Ocean. To its north across the Luzon Strait lies Taiwan. West across the South China Sea sits Vietnam...

 between geothermal power plants on the island of Leyte and the southern part of island of Luzon

Luzon

Luzon is the largest island in the Philippines. It is located in the northernmost region of the archipelago, and is also the name for one of the three primary island groups in the country centered on the Island of Luzon...

. The HVDC Leyte – Luzon went in service on 10 August 1998.

The HVDC Leyte – Luzon begins at Ormoc converter station (Leyte Province) and ends at Naga converter station (Province of Camarines Sur

Camarines Sur

Camarines Sur is a province of the Philippines located in the Bicol Region in Luzon. Its capital is Pili and the province borders Camarines Norte and Quezon to the north, and Albay to the south...

). It consists three sections:

• Leyte-Samar
  Samar
  Samar, formerly and also known as Western Samar, is a province in the Philippines located in the Eastern Visayas region. Its capital is Catbalogan City and covers the western portion of Samar as well as several islands in the Samar Sea located to the west of the mainland...
  
   overhead line
• submarine cables across San Bernardino Strait
  San Bernardino Strait
  The San Bernardino Strait is a strait in the Philippines. It separates the Bicol Peninsula of Luzon island from the island of Samar in the south.-Filipinos and San Bernardino Strait:...
  
   between Cabacungan (Allen
  Allen, Northern Samar
  Allen is a 5th class municipality in the province of Northern Samar, Philippines. According to the 2000 census, it has a population of 20,066 people in 4,145 households...
  
  , Samar) and Sta Magdalena (Sorsogon Province, Luzon)
• overhead line at Luzon

The length of submarine cable is 21 kilometres (13 mi) and the total length of overhead lines is 430 kilometres (267.2 mi). The HVDC Leyte – Luzon can transfer an output of 440 MW. It is implemented as monopolar line for a voltage of 350 kV.

The crossing of San Juanico Strait

San Juanico Strait

San Juanico Strait is a narrow strait in the Philippines. It separates the islands of Samar and Leyte. At its narrowest point, the strait is only wide, said to be the narrowest strait in the world. It is crossed by the San Juanico Bridge....

 is realized as overhead crossing with a tower on an island in the strait.

Aim of the HVDC link is to feed the AC grid in the Manila region. Beside of overall connection of grids, the HVDC Leyte – Luzon stabilize the AC network. The interconnector is manufactured by the ABB Group in cooperation with Marubeni Corporation

Marubeni

is a Japanese trading company, one of the largest general trading companies in Japan.-Offices:*Head Office - 4-2, Otemachi 1-chome, Chiyoda, Tokyo, Japan*Head Office -20-6, Shiba 5-chome, Minato, Tokyo, Japan...

 and it's operated by state owned National Transmission Corporation

National Transmission Corporation

The National Transmission Corporation is a Philippine government corporation created in 2001 by the Electric Power Industry Reform Act currently operating the nation's power grid...

.

The grounding electrodes are situated at Albuera at 10°54′01"N 124°42′24"E and near Calabanga. They are connected with the converter stations by 25 respecitively 15 kilometres long overhead lines.

External links

• HVDC Leyte – Luzon homepage, ABB website
• HVDC Leyte – Luzon overview, ABB website
• HVDC Leyte – Luzon overview, CIGRESC
• HVDC Leyte – Luzon overview, CIGRESC
• Leyte - Luzon HVDC Transmission line and tower photo