power factor

简明释义

功率因数

英英释义

例句

1.A low power factor 功率因数 can lead to higher electricity bills for businesses.

低功率因数 功率因数可能导致企业的电费更高。

2.Installing capacitors can help improve the power factor 功率因数 of your facility.

安装电容器可以帮助改善您设施的功率因数 功率因数。

3.We need to monitor the power factor 功率因数 regularly to ensure optimal performance.

我们需要定期监测功率因数 功率因数以确保最佳性能。

4.The power factor 功率因数 of the electrical system needs to be improved to reduce energy costs.

电气系统的功率因数 功率因数需要提高，以减少能源成本。

5.Utilities often charge extra fees for customers with a power factor 功率因数 below a certain level.

公用事业公司通常会对功率因数 功率因数低于某一水平的客户收取额外费用。

作文

Understanding the concept of power factor is crucial for anyone involved in electrical engineering or energy management. The power factor, defined as the ratio of real power to apparent power in an electrical system, plays a significant role in determining the efficiency and performance of electrical devices. When we talk about real power, we refer to the actual power consumed by the devices to perform useful work, measured in watts (W). On the other hand, apparent power, measured in volt-amperes (VA), represents the total power flowing in the circuit, including both the real power and the reactive power. The power factor can range from 0 to 1, where a value of 1 indicates that all the power supplied is being used effectively for productive work. This ideal scenario occurs in purely resistive circuits, where voltage and current are in phase. However, in most practical situations, especially with inductive loads such as motors and transformers, the power factor tends to be less than 1. This means that not all the power supplied is being converted into useful work, resulting in wasted energy.A low power factor can lead to increased energy costs and reduced system capacity. Utilities often charge higher rates for customers with a low power factor because it requires them to generate more power to meet the same load. Consequently, improving the power factor can lead to significant cost savings for businesses and industries. Methods such as installing capacitors or synchronous condensers can help correct the power factor by offsetting the inductive effects of motors and transformers.Furthermore, understanding the power factor is essential for ensuring the longevity and reliability of electrical equipment. A poor power factor can cause overheating, leading to premature failure of electrical components. By monitoring and managing the power factor, facilities can enhance the performance of their equipment, reduce maintenance costs, and extend the lifespan of their assets.In summary, the power factor is a vital indicator of electrical efficiency. It impacts not only the operational costs of electrical systems but also their reliability and longevity. By striving to maintain a high power factor, businesses can improve their overall energy efficiency, reduce costs, and contribute to a more sustainable energy future. Understanding and managing the power factor should be a priority for anyone involved in the design, operation, or management of electrical systems.

理解功率因数的概念对于任何参与电气工程或能源管理的人来说都是至关重要的。功率因数被定义为电气系统中实际功率与视在功率的比率，在确定电气设备的效率和性能方面发挥着重要作用。当我们谈论实际功率时，我们指的是设备用于执行有用工作的实际功率，以瓦特（W）为单位进行测量。另一方面，视在功率以伏安（VA）为单位表示电路中流动的总功率，包括实际功率和无功功率。功率因数的范围从0到1，其中值为1表示所有供应的功率都被有效地用于生产性工作。这种理想情况发生在纯阻性电路中，其中电压和电流同相位。然而，在大多数实际情况下，特别是对于感性负载，如电动机和变压器，功率因数往往小于1。这意味着并非所有供应的功率都被转化为有用工作，导致能量浪费。低功率因数可能导致能源成本增加和系统容量减少。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，因为这要求他们产生更多的电力以满足相同的负载。因此，提高功率因数可以为企业和工业带来显著的成本节约。通过安装电容器或同步调相机等方法，可以通过抵消电动机和变压器的感性效应来帮助校正功率因数。此外，理解功率因数对于确保电气设备的寿命和可靠性至关重要。差的功率因数可能导致过热，从而导致电气元件的提前故障。通过监控和管理功率因数，设施可以提高设备的性能，降低维护成本，并延长资产的使用寿命。总之，功率因数是电气效率的重要指标。它不仅影响电气系统的运营成本，还影响其可靠性和使用寿命。通过努力保持高功率因数，企业可以提高整体能源效率，降低成本，并为更可持续的能源未来做出贡献。理解和管理功率因数应该是任何参与电气系统设计、操作或管理的人的优先事项。