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Which one is not the type of HVDC Transmission system?
Homo polar system
Bipolar System
Monopolar system
Radial System
Radial System
HVDC (High Voltage Direct Current) transmission systems are classified based on the number of conductors and the polarity of the voltages used. The three primary configurations are Monopolar, Bipolar, and Homopolar systems, whereas a 'Radial System' is a topology used in AC distribution network classification, not a configuration of HVDC conversion.
HVDC (High Voltage Direct Current) transmission systems are classified based on the number of conductors and the polarity of the voltages used. The three primary configurations are Monopolar, Bipolar, and Homopolar systems, whereas a 'Radial System' is a topology used in AC distribution network classification, not a configuration of HVDC conversion.
PlossтАЛ=I2R тАФ Basic power loss in transmission conductors
PHVDCтАЛ=VdтАЛтЛЕIdтАЛ тАФ Power delivered by an HVDC link
In a Bipolar system, two conductors are used with opposite polarities relative to ground, allowing independent operation of each pole. In Monopolar, a single conductor is used with the return path via earth or metallic return. Homopolar utilizes multiple conductors of the same polarity, typically negative, to minimize corona loss at high voltages. Radial refers to a distribution structure where loads are fed from a single source, which is unrelated to the pole-conductor configuration of an HVDC link.
Monopolar systems use one conductor and ground/sea return.
Bipolar systems feature two conductors of opposite polarity.
Homopolar systems employ multiple conductors of the same polarity.
Radial systems describe power network architecture, not conversion configurations.
Lower line costs compared to HVAC for long distances
Independent control of active power flow
Expensive converter station equipment
Generation of harmonic currents requiring filters
Bulk power transmission over long distances
Asynchronous interconnection of AC grids
Homopolar systems are rarely used because they require two conductors of same polarity, making earth return mandatory for any fault.
Radial system is a common term in secondary distribution networks (e.g., ring vs radial).
D is correct тАФ Radial System is a classification of distribution network topologies, whereas Monopolar, Bipolar, and Homopolar refer to HVDC pole configurations.
Always differentiate between 'System Configuration' (poles/conductors) and 'Network Topology' (series/radial/ring) when analyzing power system questions.