Aizerman's conjecture: Difference between revisions
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{{distinguish|power factor}} | |||
In [[electrical engineering]] the '''load factor''' is defined as the average load divided by the peak load in a specified time period.<ref>{{cite journal |last1=Watkins |first1=G. P. |year=1915 |title=A Third Factor in the Variation of Productivity: The Load Factor |journal=[[American Economic Review]] |volume=5 |issue=4 |pages=753–786 |publisher=[[American Economic Association]] |url=http://www.jstor.org/stable/1809629 |accessdate=December 5, 2012}}</ref> | |||
<math> f_{Load} = \frac{\text{Average load}}{ \text{Maximum load in given time period}}</math> | |||
It can be derived from the [[load profile]] of the specific device or system of devices. Its value is always less than one because maximum demand is always more than average demand since we will not connect all the loads at a time and that to we will not operate its full capacity. A high load factor means power usage is relatively constant. Low load factor shows that occasionally a high demand is set. To service that peak, capacity is sitting idle for long periods, thereby imposing higher costs on the system. Electrical rates are designed so that customers with high load factor are charged less overall per kWh. This process along with others is called [[Load balancing (electrical power)|load balancing]] or peak shaving. | |||
The load factor is closely related to and often confused with the [[demand factor]]. | |||
<math> f_{Demand} = \frac{ \text{Maximum load in given time period}}{\text{Maximum possible load}}</math> | |||
The major difference to note is that the denominator in the demand factor is fixed depending on the system. Because of this, the demand factor cannot be derived from the load profile but needs the addition of the full load of the system in question. | |||
==See also== | |||
{{portal|Energy}} | |||
*[[Availability factor]] | |||
*[[Capacity factor]] | |||
*[[Demand factor]] | |||
*[[Diversity factor]] | |||
*[[Utilization factor]] | |||
==References== | |||
{{Reflist}} | |||
{{Electricity delivery}} | |||
[[Category:Power engineering]] |
Revision as of 07:59, 9 March 2013
Template:Distinguish In electrical engineering the load factor is defined as the average load divided by the peak load in a specified time period.[1]
It can be derived from the load profile of the specific device or system of devices. Its value is always less than one because maximum demand is always more than average demand since we will not connect all the loads at a time and that to we will not operate its full capacity. A high load factor means power usage is relatively constant. Low load factor shows that occasionally a high demand is set. To service that peak, capacity is sitting idle for long periods, thereby imposing higher costs on the system. Electrical rates are designed so that customers with high load factor are charged less overall per kWh. This process along with others is called load balancing or peak shaving.
The load factor is closely related to and often confused with the demand factor.
The major difference to note is that the denominator in the demand factor is fixed depending on the system. Because of this, the demand factor cannot be derived from the load profile but needs the addition of the full load of the system in question.
See also
Sportspersons Hyslop from Nicolet, usually spends time with pastimes for example martial arts, property developers condominium in singapore singapore and hot rods. Maintains a trip site and has lots to write about after touring Gulf of Porto: Calanche of Piana.
References
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