Voll

Voll originally meant "a small, mow-able piece of land in proximity to a cottage". It may also refer to the following:

Places

Norway

People

Abbreviations

Value of lost load

The Value of Lost Load (VoLL) is the estimated amount that customers receiving electricity with firm contracts would be willing to pay to avoid a disruption in their electricity service. The value of these losses can be expressed as a customer damage function (CDF). A CDF is defined as:

Loss ($/kW) = ƒ (duration, season, time of day, notice)

Based on the calculated outage cost, a CDF can be obtained for various customer groups. Typically, there are three distinct groups of customers: residential, small and medium commercial/industry and large commercial/industrial. Figure 1 below illustrates the incremental CDFs of these three groups.

The CDF relates the magnitude of customer losses (per kW interrupted) for a given duration of a power outage. While the general shapes of all three curves are similar, the magnitude of loss varies dramatically depending on the customer’s size. Based on VoLL data from an EGAT survey in March and April 2000, it was estimated that the customers’ costs in the first hour for residential customers was Baht 11.45/kW. For large commercial/industrial (C/I) and small & medium C/I customers, the cost in the first hour was Baht 29.55/kW and Baht 89.50 /kW respectively. Further research from EPRI indicates that residential customers’ cost tend to peak at USD 1.50/kW in the first hour and falls of to USD 0.46/kW in subsequent hours. On the other hand, large C/I and small & medium C/I suffer much higher losses of USD 10/kW and USD 38/kW respectively in the first hour. This falls to USD 4/kW and USD 9/kW respectively in the subsequent hours.

Kurgan

A kurgan (Russian: курга́н) is a tumulus, a type of burial mound or barrow, heaped over a burial chamber, often of wood. The Russian noun, which is already attested in Old East Slavic, is borrowed from an unidentified Turkic language, compare Modern Turkish kurğan, which means "fortress". These are mounds of earth and stones raised over a grave or graves. Associated with its use in Soviet archaeology, the word is now widely used for tumuli in the context of Eastern European and Central Asian archaeology.

The earliest kurgans date to the 4th millennium BC in the Caucasus, and are associated with the Indo-Europeans. Kurgans were built in the Eneolithic, Bronze, Iron, Antiquity and Middle Ages, with ancient traditions still active in Southern Siberia and Central Asia. Kurgan cultures are divided archeologically into different sub-cultures, such as Timber Grave, Pit Grave, Scythian, Sarmatian, Hunnish and Kuman-Kipchak.

A plethora of placenames that include the word "kurgan" are located from Lake Baikal to the Black Sea.

Kurgan (disambiguation)

Kurgan is a tumulus or burial mound in Eurasia, but especially in Russia and Ukraine.

Kurgan may also refer to:

Kurgan hypothesis

The Kurgan hypothesis (also known as the Kurgan theory or Kurgan model) is the most widely accepted proposal of several solutions to explain the origins and spread of the Indo-European languages. It postulates that the people of an archaeological "Kurgan culture" in the Pontic steppe were the most likely speakers of the Proto-Indo-European language. The term is derived from kurgan (курган), a Turkic loanword in Russian for a tumulus or burial mound.

The Kurgan hypothesis was first formulated in the 1950s by Marija Gimbutas, who used the term to group various cultures, including the Yamna, or Pit Grave, culture and its predecessors. David Anthony instead uses the core Yamna Culture and its relationship with other cultures as a point of reference.

Marija Gimbutas defined the "Kurgan culture" as composed of four successive periods, with the earliest (Kurgan I) including the Samara and Seroglazovo cultures of the Dnieper/Volga region in the Copper Age (early 4th millennium BC). The people of these cultures were nomadic pastoralists, who, according to the model, by the early 3rd millennium BC had expanded throughout the Pontic-Caspian steppe and into Eastern Europe.