What is the meaning of HVDC transmission line voltages?

  • Thread starter Thread starter AV8Electric
  • Start date Start date
  • Tags Tags
    Voltage
AI Thread Summary
HVDC transmission line voltages, such as +/-500kV, indicate that one conductor operates at 500kV above ground while the other is at 500kV below ground, resulting in a total voltage difference of 1000kV between the two conductors. This configuration allows for efficient power transmission over long distances. An example from Clean Line Energy Partners illustrates that lines operating at ±500kV can transmit significant power, up to 3,100 MW. The discussion seeks clarification on the interpretation of these voltage designations. Understanding HVDC voltage levels is crucial for grasping their operational capabilities in power transmission systems.
AV8Electric
Messages
2
Reaction score
0
HVDC transmission line voltages are usually written as, for example., +/-500kV. Does this mean the voltage between the two conductors is 500kV, or does it mean that one conductor is 500kV above ground and the other is 500kV below ground, which would mean the voltage between the two is 1000kV? I've looked around on the internet, but haven't found the answer. Any help would be appreciated.
 
Engineering news on Phys.org
Hi there
welcome to PF

AV8Electric said:
HVDC transmission line voltages are usually written as, for example., +/-500kV.

can you give an example or 2 of where you have seen this written please
it may help us guys put your comment into better context :smile:Dave
 
The following quote is from Clean Line Energy Partners web site. " Operating at ±500 kilovolts, the line is capable of transmitting up to 3,100 MW of power. In terms of operating voltage and capacity, the Pacific Intertie is similar to the Clean Line transmission line projects, which will operate at ±600 kilovolts and deliver up to 3,500 MW of power." Hope this helps.
 

Thread 'Why does the amperage go real high if there is a low voltage short?'

I used to be an HVAC technician. One time I had a service call in which there was no power to the thermostat. The thermostat did not have power because the fuse in the air handler was blown. The fuse in the air handler was blown because there was a low voltage short. The rubber coating on one of the thermostat wires was chewed off by a rodent. The exposed metal in the thermostat wire was touching the metal cabinet of the air handler. This was a low voltage short. This low voltage...
View full post »

Thread 'How might electronics be different if AC voltage was 72V at 45 Hz?'

Hey guys. I have a question related to electricity and alternating current. Say an alien fictional society developed electricity, and settled on a standard like 73V AC current at 46 Hz. How would appliances be designed, and what impact would the lower frequency and voltage have on transformers, wiring, TVs, computers, LEDs, motors, and heating, assuming the laws of physics and technology are the same as on Earth?
View full post »
Thread 'How Does Jaguar's 1980s V12 Dual Coil Ignition System Enhance Spark Strength?'

Thread 'How Does Jaguar's 1980s V12 Dual Coil Ignition System Enhance Spark Strength?'

I have come across a dual coil ignition system as used by Jaguar on their V12 in the 1980's. It uses two ignition coils with their primary windings wired in parallel. The primary coil has its secondary winding wired to the distributor and then to the spark plugs as is standard practice. However, the auxiliary coil has it secondary winding output sealed off. The purpose of the system was to provide a stronger spark to the plugs, always a difficult task with the very short dwell time of a...
View full post »

Similar threads

Electricity transmission explained?
Replies
12
Views
2K
EMF below Power Transmission Lines
Replies
2
Views
2K
How to enhance output Voltages of this RF Power Amplifier
Replies
16
Views
2K
Questions about Circuit Models of Transmission Lines
Replies
6
Views
2K
A single wire electrical energy transmission....
Replies
5
Views
2K
How Does Earthing Work in Electrical Systems?
Replies
3
Views
2K
Resonance in transmission lines
Replies
5
Views
2K
I Are voltage and current waves in transmission lines an artifice?
Replies
6
Views
2K
Fault in ungrounded system -> zero sequence voltage
Replies
1
Views
3K
What Determines Voltage Reference and Measurement Accuracy?
Replies
15
Views
2K

Hot Threads

Recent Insights

Back
Top