Tag Archives | High Voltage Direct Current Transmission

DC transmission possesses many technical and economic advantages over ac transmission. Some of the advantages are given below: Advantage # 1. Cheaper in Cost: Bipolar HVDC transmission lines require two-pole conductors while ac system requires 3 conductors to carry power. HVDC transmission can utilize earth return and, therefore, does not require a double circuit while EHV-AC transmission always requires a [...]

The high voltage dc links may be classified into: 1. Monopolar Link 2. Bipolar Link 3. Homopolar Link. Type # 1. Monopolar DC Link: As the name suggests, monopolar link has only one conductor and return path is provided by permanent earth or sea. The line usually operates with negative polarity with respect to ground so as to reduce corona [...]