V2EX voltage sag

Voltage Sag

释义 Definition

电压暂降(电压下陷):指电力系统中电压在很短时间内突然降低到正常值以下(通常持续几个周波到几秒),随后恢复。常见原因包括大负载启动、短路故障或电网切换等。(在不同语境下也可能与 brownout 等概念相关,但 voltage sag 更强调“短时下跌并恢复”。)

发音 Pronunciation (IPA)

/voltd s/

例句 Examples

A voltage sag can make the lights flicker for a moment.
电压暂降会让灯光短暂闪烁。

When the motor started, the factory experienced a voltage sag that caused several sensitive controllers to reset.
电机启动时,工厂出现电压暂降,导致几台对电压敏感的控制器发生复位。

词源 Etymology

voltage 来自 volt(伏特,电压单位,源于意大利科学家 Alessandro Volta 的姓)+ 名词后缀 -agesag 原意为“下垂、下陷”。合起来 voltage sag 字面意思就是“电压下陷”,用于描述电压在短时间内“往下掉一截”的现象。

相关词 Related Words

文学与著作 Literary Works

  • Markus (ed.), Standard Handbook for Electrical Engineers(电力工程常用手册,电能质量章节常讨论 voltage sag
  • Bollen, Understanding Power Quality Problems: Voltage Sags and Interruptions(专门讨论电压暂降与中断的经典著作,标题即包含该词组)
  • IEEE 电能质量相关标准与推荐实践文档(如电压暂降/短时电压变化的术语与分类中频繁出现 voltage sag
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