No-load loss (also called "fixed loss") is a portion of the loss of electricity that does not depend on the power being distributed through an
electric circuit
An electrical network is an interconnection of electrical components (e.g., batteries, resistors, inductors, capacitors, switches, transistors) or a model of such an interconnection, consisting of electrical elements (e.g., voltage sources, ...
, as opposed to the
load loss. No-load loss typically depends on the operating voltage of a grid unit and can be attributed to:
*
dielectric loss
Dielectric loss quantifies a dielectric material's inherent dissipation of electromagnetic energy (e.g. heat). It can be parameterized in terms of either the loss angle ''δ'' or the corresponding loss tangent tan ''δ''. Both refer to the ...
in cables;
*
core loss in
electric transformer
A transformer is a passive component that transfers electrical energy from one electrical circuit to another circuit, or multiple circuits. A varying current in any coil of the transformer produces a varying magnetic flux in the transformer's c ...
s;
* some types of losses in
synchronous condenser
In electrical engineering, a synchronous condenser (sometimes called a syncon, synchronous capacitor or synchronous compensator) is a DC-excited synchronous motor, whose shaft is not connected to anything but spins freely.B. M. Weedy, Electric P ...
s (rotor surface losses, pulsating losses in stator teeth, and losses in the stator due to higher harmonics of the rotor field);
* loss in the electromechanical measuring devices (low, e. g. an "analog"
electrical meter
North American domestic analog electricity meter.
Electricity meter with transparent plastic case (Israel)
North American domestic electronic electricity meter
An electricity meter, electric meter, electrical meter, energy meter, or kilowa ...
consumes less than 1.5 Watts of power);
*
corona loss in high-volage lines.
See also
*
No load power
References
Sources
*
Electric power distribution
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