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In electrical engineering, particularly power engineering, voltage regulation is a measure of change in the voltage magnitude between the sending and receiving end of a component, such as a transmission or distribution line. Voltage regulation describes the ability of a system to provide near constant voltage over a wide range of load conditions. The term may refer to a passive property that results in more or less voltage drop under various load conditions, or to the active intervention with devices for the specific purpose of adjusting voltage. ==Electrical power systems== In electrical power systems it is a dimensionless quantity defined at the receiving end of a transmission line as: : where ''Vnl'' is voltage at no load and ''Vfl'' is voltage at full load. A smaller value of ''Voltage Regulation'' is usually beneficial. The Voltage Regulation formula could be visualized with the following: "Consider power being delivered to a load such that the voltage at the load is the load's rated voltage ''VRated'', if then the load disappears, the voltage at the point of the load will rise to ''Vnl''." Sometimes, the term voltage regulation is used to describe processes by which the quantity ''VR'' is reduced, especially concerning special circuits and devices for this purpose (see below). 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Voltage regulation」の詳細全文を読む スポンサード リンク
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