power factor

简明释义

功率系数

英英释义

例句

1.The electrical engineer explained that the power factor 功率因数 of the motor was below the acceptable limit.

电气工程师解释说，电动机的功率因数 power factor 低于可接受的限制。

2.The utility company offers incentives for customers who improve their power factor 功率因数.

公用事业公司为改善其功率因数 power factor 的客户提供激励措施。

3.Improving the power factor 功率因数 can lead to significant energy savings in industrial applications.

提高功率因数 power factor 可以在工业应用中带来显著的节能效果。

4.To avoid penalties, companies must monitor their power factor 功率因数 regularly.

为了避免罚款，公司必须定期监测其功率因数 power factor。

5.A low power factor 功率因数 can result in higher electricity bills for businesses.

低功率因数 power factor 可能导致企业的电费增加。

作文

Understanding the concept of power factor is crucial for anyone involved in electrical engineering or energy management. The power factor is a measure of how effectively electrical power is being converted into useful work output. It is defined as the ratio of real power, which does the useful work, to apparent power, which is the product of the current and voltage in the circuit. A high power factor indicates that a large portion of the power is being used effectively, while a low power factor suggests that much of the power is wasted. This concept is particularly important in industrial settings where large machinery operates. In practical terms, the power factor can range from 0 to 1. A power factor of 1 (or 100%) means that all the energy supplied by the source is being used effectively for work. However, in many cases, especially with inductive loads like motors and transformers, the power factor tends to be lower than 1. This inefficiency can lead to increased energy costs, as utilities often charge higher rates for customers with low power factors. To improve the power factor, industries often install capacitors or synchronous condensers. These devices help to offset the inductive effects of machinery, thereby improving the power factor. For example, if a factory has a power factor of 0.7, it means that only 70% of the electrical power is being used effectively, while the remaining 30% is not contributing to productive work. By installing power factor correction equipment, the factory can raise its power factor to a more acceptable level, such as 0.9 or even 1.0, leading to significant cost savings. Moreover, understanding the power factor is essential for energy conservation efforts. With rising energy costs and increasing environmental concerns, businesses are looking for ways to reduce their energy consumption. Improving the power factor not only minimizes energy waste but also reduces the demand on the electrical grid, which can have positive environmental impacts. In conclusion, the power factor is a vital aspect of electrical systems that affects efficiency and cost. By actively managing and improving the power factor, industries can enhance their operational efficiency, reduce energy costs, and contribute to a more sustainable future. Understanding this concept is not just beneficial for engineers; it is also important for business owners and managers who are responsible for energy usage in their facilities. Knowledge of the power factor enables better decision-making regarding energy consumption and helps in implementing strategies that lead to both economic and environmental benefits.

理解功率因数的概念对任何涉及电气工程或能源管理的人来说都是至关重要的。功率因数是衡量电力如何有效转化为有用工作输出的指标。它被定义为实际功率（做有用工作的功率）与视在功率（电路中电流和电压的乘积）之间的比率。高功率因数表明大量电力被有效利用，而低功率因数则表明许多电力被浪费。这一概念在工业环境中尤为重要，因为大型机器在运行。在实际应用中，功率因数的范围可以从0到1。功率因数为1（或100%）意味着所有由电源提供的能量都被有效用于工作。然而，在许多情况下，特别是对于电感负载如电动机和变压器，功率因数往往低于1。这种低效率可能导致能源成本增加，因为公用事业公司通常会对低功率因数的客户收取更高的费用。为了改善功率因数，工业通常会安装电容器或同步补偿器。这些设备有助于抵消机械设备的电感效应，从而改善功率因数。例如，如果一家工厂的功率因数为0.7，这意味着只有70%的电能被有效利用，而剩余的30%没有贡献于生产性工作。通过安装功率因数校正设备，工厂可以将其功率因数提高到更可接受的水平，如0.9甚至1.0，从而节省大量成本。此外，理解功率因数对于节能努力至关重要。随着能源成本的上升和环境问题的加剧，企业正在寻找减少能源消耗的方法。改善功率因数不仅可以最小化能源浪费，还能减少对电网的需求，这对环境产生积极影响。总之，功率因数是影响电力系统效率和成本的重要方面。通过积极管理和改善功率因数，工业可以提高运营效率，降低能源成本，并为更可持续的未来做出贡献。理解这一概念不仅对工程师有益；它对于负责其设施能源使用的企业主和管理者同样重要。了解功率因数能够使人们在能源消耗方面做出更好的决策，并帮助实施有利于经济和环境的策略。