voltage sag

USAGE SUMMARY

The phrase "voltage sag" is correct and usable in written English.
It is typically used in electrical engineering contexts to describe a temporary drop in voltage levels in a power supply system. Example: "During peak demand hours, we often experience a voltage sag that can affect the performance of sensitive equipment."

✓ Grammatically correct

Science

Human-verified examples from authoritative sources

Exact Expressions

60 human-written examples

DC voltage control should be stopped during voltage sag period.

Journal of Modern Power Systems and Clean Energy

Open image in new window Fig. 5 Voltage sag characterization.

Journal of Modern Power Systems and Clean Energy

1) Condition I: When the voltage sag occurs in UPQC-SRI region, the mitigation of voltage sag and load harmonic current can be performed at the same time.

Journal of Modern Power Systems and Clean Energy

Consequently, VSG cannot work well during voltage sag under traditional control mode.

Journal of Modern Power Systems and Clean Energy

Firstly, the principle of voltage sag compensation is derived in this paper.

Journal of Modern Power Systems and Clean Energy

This strategy only provides reactive power to compensate voltage sag without active power consumption.

Protection and Control of Modern Power Systems

For unbalance compensation, DG mitigates/reduces voltage sag and unbalances by injecting additional negative sequence current.

Journal of Modern Power Systems and Clean Energy

Therefore, UPQC-SRI can provide more sustaining compensation for the voltage sag.

Journal of Modern Power Systems and Clean Energy

The voltage sag can damage the power quality, may even cause huge economic losses [3].

Protection and Control of Modern Power Systems

Wind speed variations, local load variations, and voltage sag are simulated.

Renewable Energy

Firstly, the characteristics of the emulated voltage sag are presented in Fig. 5.

Journal of Modern Power Systems and Clean Energy

Expert writing Tips

Best practice

When discussing power quality issues, be precise with the term "voltage sag". Ensure you're referring to a short-term reduction in voltage, not a complete power loss or other types of disturbances.

Common error

Avoid using "voltage sag" interchangeably with terms like "power outage" or "transient voltage". A "voltage sag" is a temporary drop, whereas a power outage is a complete loss of power, and a transient voltage is a short burst of excess voltage.

Linguistic Context

The phrase "voltage sag" functions primarily as a noun phrase, often serving as the subject or object of a sentence. It identifies a specific type of power quality disturbance. Ludwig examples confirm its use in technical descriptions and analyses of electrical systems.

Expression frequency: Very common

Frequent in

Science

100%

Less common in

News & Media

0%

Formal & Business

0%

Academia

0%

Ludwig's WRAP-UP

The phrase "voltage sag" is a common and grammatically correct noun phrase used to describe a temporary reduction in voltage, primarily within scientific and technical contexts. Ludwig's analysis confirms that it's frequently employed in discussing power quality issues, particularly in electrical engineering. The phrase is characterized by its formal and scientific register, and according to Ludwig AI, its prevalence in scientific journals and technical documents underlines its technical usage. While "voltage dip" and "voltage drop" serve as viable alternatives, "voltage sag" maintains a specific and precise meaning in technical discussions. It is important to avoid using "voltage sag" interchangeably with terms like "power outage" or "transient voltage".

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

voltage dip

Replaces "sag" with "dip", a more general term for a temporary decrease.

voltage drop

Uses "drop" instead of "sag", indicating a decrease in voltage level.

undervoltage condition

A more formal term describing a state of reduced voltage.

transient voltage decrease

Highlights the temporary nature of the voltage reduction.

temporary voltage reduction

Emphasizes the short-term nature of the voltage change.

momentary voltage decrease

Indicates a very brief voltage reduction.

voltage fluctuation

A broader term that includes both increases and decreases in voltage, but can imply a sag.

power sag

While "voltage sag" is more specific, power sag can be used in some contexts to convey the same meaning.

grid voltage disturbance

A more general phrase indicating an anomaly in the grid voltage.

brownout

Refers to an intentional or unintentional drop in voltage in an electrical power supply system.

FAQs

What causes a "voltage sag"?

A "voltage sag" can be caused by the startup of large electrical loads, faults on the power system, or sudden changes in the supply voltage.

How can I prevent damage from a "voltage sag"?

You can protect sensitive equipment from "voltage sags" by using uninterruptible power supplies (UPS), surge protectors, or constant voltage transformers.

What are the consequences of a "voltage sag"?

A "voltage sag" can cause sensitive electronic equipment to malfunction, shut down, or experience reduced lifespan. It can also lead to data loss and process interruptions.

What's the difference between a "voltage sag" and a "voltage swell"?

A "voltage sag" is a short-term decrease in voltage, while a "voltage swell" is a short-term increase in voltage. Both are power quality disturbances, but they affect equipment in different ways.