Voltage regulators vs. Shunt capacitors for LV
Voltage regulators vs. Shunt capacitors for LV
(OP)
I understand that with MV or HV power flow, a capacitance by end of feeder will cause voltage rise and reactive power support; however, with a LV system, since the system resistance isn't negligible, it may not be a very efficient solution.
Would a voltage regulator be more efficient in controlling the voltage with a LV feeder than a shunt capacitance? I doubt.
Any clue? past projects experience?
Would a voltage regulator be more efficient in controlling the voltage with a LV feeder than a shunt capacitance? I doubt.
Any clue? past projects experience?






RE: Voltage regulators vs. Shunt capacitors for LV
For an HV line, a series capacitor compensates the line inductivity, and that's an entirely different story.
The answer to your question depends very much on what load you have. If mostly incandescent and heating (resistive loads), a capacitor will not help much. For asynchronous motors, it helps a lot.
Gunnar Englund
www.gke.org
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Half full - Half empty? I don't mind. It's what in it that counts.
RE: Voltage regulators vs. Shunt capacitors for LV
Capacitors are used to improve lagging power factors and reduce current.
Voltage regulators are most common on long rural lines where the voltage drop becomes progressively greater the farther out from the source you are.
OLTCs can compensate for voltage drop on fairly short lines but cannot correct the progressively greater voltage drop with distance commonly seen on long rural lines.
Bill
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"Why not the best?"
Jimmy Carter
RE: Voltage regulators vs. Shunt capacitors for LV
RE: Voltage regulators vs. Shunt capacitors for LV
The voltage drop with the distributed loads increases with the distance from the sub.
The voltage regulators are typically 10 or 15 miles out.
Bill
--------------------
"Why not the best?"
Jimmy Carter
RE: Voltage regulators vs. Shunt capacitors for LV
RE: Voltage regulators vs. Shunt capacitors for LV
https://library.e.abb.com/public/2c8ee501aea94a378... -MV Voltage Regulators (2017-01)