Welcome to electrical and electronics engineering discussion website, Please login or register to continue.

Welcome to electrical and electronics engineering Q&A site...

Join our WhatsApp group

Please log in or register to answer this question.

2 Answers

0 votes
Ok so there is advantages and disadvantages to HVDC. Let's start with the cons, in order to transmit DC any significant distance it needs to be a high voltage such as 500 kv. This requires two things , first a voltage rectifier to turn AC into DC and then an inverter to switch it back to AC.  This is important because it is also one of the advantages, but this means that you require more speciality equipment which is drives up cost. As DC cannot be stepped up or down it has to first pass through a transformer as AC before becoming DC and again after it has been turned back into AC. This is important because while AC can change voltage the frequency remains the same 60hz here in the US but Canada uses 50hz. So that direct AC connection is impossible. However because DC to AC inverters can change frequency this is possible through a HVDC connection and because it's DC it only requires two conductors which reduces the cost. The other advantage is that power loss is actually less through the use of HVDC which makes extremely more efficient and cost effective but short distances too costly to implement.
0 votes
In Long distance DC transmission will be better in cost. It requires more equipments for flexiblity

In short distance AC transmission is better in 

cost. It is more Flexible

Amazon Shopping

Welcome to Q&A site for electrical and electronics engineering discussion for diploma, B.E./B.Tech, M.E./M.Tech, & PhD study.
If you have a new question please ask in English.
If you want to help this community answer these questions.


Most popular tags

power motor dc circuit transformer voltage current used system phase factor resistance load synchronous energy ac induction generator electric series frequency use speed capacitor between meter electrical line type mosfet control transmission difference magnetic plant high single instrument bjt source advantages function diode machine unit winding torque amplifier define supply thyristor motors arduino field shunt relay armature problem electricity maximum time parallel on transformers types coil diagram state flow value material three starting and direction method emf operating theorem digital microprocessor test instruments efficiency ratio loss measure operation connected low applications wave effect single-phase working losses different network wattmeter temperature measuring constant signal controlled breaker device full compare drive wire resistivity logic materials machines inductance switch flux disadvantages converter transistor gain protection scr angle force core measurement number free principle rc generators law negative bridge friction open pole conductor conservation steam iron loop resistors hysteresis short computer using lines secondary station battery rectifier inverter linear relays nuclear regulation circuits design analog work rotor electronics gate forces diesel damping rlc connection factors capacitors minimum insulation basic moving running reactance systems air fault range direct main stability quality starter igbt eddy ideal ammeter rl 3-phase plants arc induced thermal error fuzzy biasing dielectric pressure balanced superposition errors rotation characteristics feedback measured electronic start alternator off back curve over solar three-phase tariff locomotive peak bias zener capacitance commutator surge rating universal potentiometer permanent mechanical copper self transducer capacity electrons memory adc excitation inductive explain fuse pure harmonics application internal pmmc average reaction welding resonance traction breakers designed electromagnetic si generation brushes density switching shaded rate impedance distribution transfer methods star oscillator reluctance semiconductor inductor simplification algebra 8085 boolean weston dynamometer insulating strength installation permeability definition fuel heating earth units neutral rms rated engineering conductors coefficient controller usually reverse excited analysis change body components