This presentation contains introduction to HVDC systems, Comparison of AC & DC transmission: Economics of Power Transmission

1. HVDC TRANSMISSION: DC POWER
TRANSMISSION FUNDAMENTALS
MR. ASIF L. JAMADAR

2. INTRODUCTION
 Demand of electricity increases year by year
 The imperative of supplying energy at reasonable cost
 Power transmission at high power level
 HVDC transmission made a modest beginning in 1954 (between Swedish
mainland & island of Gotland)
 Total installed HVDC installed now exceeds 75000 MW
 Controllability of power flow in transmission line become an important issue
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3. COMPARISON OF AC AND DC TRANSMISSION
 The relative merits of AC and DC transmission which need to be considered
by a system planner are based on the following factors:
 Economics of transmission
 Technical performance
 Reliability
 Major feature of power system is the continuous expansion necessitated 3

4. ECONOMICS OF POWER TRANSMISSION
 Cost of power transmission
includes…….
 Characteristics of insulators and line
designs
 Comparison on the basis of Skin effect
 Comparison on the basis of Corona
effect
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5. THANK
YOU
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