comparison of AC & DC (1).pptx - COMPARISON OF AC&DC REASONS FOR AC GENERATION TRANSMISSION Due to ease of transformation of voltage

comparison of AC & DC (1).pptx - COMPARISON OF AC&DC...

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COMPARISON OF AC &DC
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REASONS FOR AC GENERATION & TRANSMISSION : Due to ease of transformation of voltage levels(transformer action) Alternating current is universally utilized for generation & load and hence for transmission. Generators are at remote places away from load centers. Voltage can be boosted up to 220kV or 400kV by step up transformer for transmission to load. To reach load at home/industry at safe levels (transformer step-down).
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COMPARE HVDC & HVAC SYSTEMS : 2 Conductors used in DC while we require 3 in AC No inductance & surges( high v waves of short duration) Due to absence of inductive element low voltage drop. No skin effect so small cross sectional area only required. Dc has low potential stress over ac of same voltage level. No interference with communication system.
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  • Fall '14
  • H N SHANKAR

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