lagging power factor

简明释义

滞后功率因数

英英释义

例句

1.Monitoring the lagging power factor (滞后功率因数) can help identify issues in electrical systems.

监测滞后功率因数可以帮助识别电气系统中的问题。

2.Utility companies may charge higher rates for businesses that maintain a lagging power factor (滞后功率因数) below a certain threshold.

公用事业公司可能会对维持滞后功率因数低于某一阈值的企业收取更高的费用。

3.The industrial plant was experiencing inefficiencies due to a high percentage of equipment operating at a lagging power factor (滞后功率因数).

该工业厂房由于高比例的设备在运行时处于滞后功率因数状态而出现了效率低下的问题。

4.The technician explained that a lagging power factor (滞后功率因数) indicates that the current is out of phase with the voltage.

技术人员解释说，滞后功率因数表示电流与电压不同步。

5.To improve energy efficiency, the company installed capacitors to correct the lagging power factor (滞后功率因数) in their electrical system.

为了提高能源效率，公司安装了电容器来纠正其电气系统中的滞后功率因数。

作文

In the realm of electrical engineering, the concept of power factor plays a crucial role in determining the efficiency of electrical systems. One specific type of power factor is known as the lagging power factor, which occurs when the current waveform lags behind the voltage waveform in an alternating current (AC) circuit. This phenomenon is particularly common in inductive loads such as motors, transformers, and coils. Understanding the implications of a lagging power factor is essential for engineers and technicians who aim to optimize the performance of electrical installations.The power factor is defined as the ratio of real power, which performs useful work, to apparent power, which is the product of the current and voltage in the circuit. A power factor of 1 (or unity) indicates that all the power supplied is being used effectively, whereas a lagging power factor less than 1 signifies that some of the power is wasted. This wastage manifests as reactive power, which does not contribute to productive work but is necessary for maintaining the electric and magnetic fields in inductive devices.When the lagging power factor is present, it can lead to several issues within an electrical system. For one, it can cause increased losses in the distribution system due to higher current flow. This results in greater heat generation in conductors and transformers, potentially leading to overheating and reduced lifespan of equipment. Furthermore, utilities often impose penalties on consumers with low power factors, encouraging them to install power factor correction devices such as capacitors to improve their overall efficiency.Improving the lagging power factor can be achieved through various methods. The most common approach involves the use of capacitors, which provide leading reactive power to counteract the lagging nature of inductive loads. By strategically placing capacitors in the circuit, the overall power factor can be raised closer to unity, thus enhancing the efficiency of the system. Additionally, using synchronous condensers or variable frequency drives (VFDs) can also help in managing power factor issues in industrial settings.From an economic perspective, maintaining a high power factor is beneficial for both consumers and utility providers. For consumers, a better power factor translates to lower electricity bills and reduced demand charges. For utilities, a higher power factor means less strain on the infrastructure, allowing for more efficient energy distribution and reduced need for additional generation capacity.In conclusion, the lagging power factor is a significant concern in the field of electrical engineering, especially as industries become increasingly reliant on inductive loads. By understanding its implications and employing effective strategies for correction, both consumers and utility providers can achieve improved efficiency and cost savings. As technology continues to evolve, addressing power factor issues will remain a critical aspect of electrical system management, ensuring that energy is utilized effectively and sustainably.

在电气工程领域，功率因子的概念在确定电气系统的效率方面起着至关重要的作用。其中一种特定类型的功率因子被称为滞后功率因子，它发生在交流电路中电流波形滞后于电压波形时。这种现象在电动机、变压器和线圈等感性负载中尤为常见。理解滞后功率因子的影响对于希望优化电气装置性能的工程师和技术人员至关重要。功率因子定义为实际功率（执行有用工作）与视在功率（电路中电流和电压的乘积）的比率。功率因子为1（或单位）表示所有供应的电力都被有效利用，而滞后功率因子小于1则表明部分电力被浪费。这种浪费表现为无功功率，它不对生产性工作做贡献，但对于维持感性设备中的电场和磁场是必要的。当存在滞后功率因子时，可能会导致电气系统内的若干问题。首先，由于电流流动增加，这可能会导致配电系统中的损耗增加。这会导致导体和变压器中产生更多的热量，可能导致过热和设备使用寿命缩短。此外，公用事业公司通常会对低功率因子的用户征收罚款，鼓励他们安装功率因数校正设备，如电容器，以提高整体效率。改善滞后功率因子可以通过多种方法实现。最常见的方法是使用电容器，电容器提供前馈无功功率，以抵消感性负载的滞后特性。通过在电路中战略性地放置电容器，可以将整体功率因子提高到更接近于单位，从而增强系统的效率。此外，使用同步调相机或变频驱动器（VFD）也可以帮助管理工业环境中的功率因数问题。从经济角度来看，维持高功率因子对消费者和公用事业提供者都是有益的。对于消费者而言，更好的功率因子意味着较低的电费和减少的需求费用。对于公用事业公司而言，更高的功率因子意味着对基础设施的压力较小，从而允许更高效的能源分配和减少对额外发电能力的需求。总之，滞后功率因子在电气工程领域是一个重要的问题，特别是随着工业对感性负载的日益依赖。通过理解其影响并采用有效的校正策略，消费者和公用事业提供者都可以实现更高的效率和成本节省。随着技术的不断发展，解决功率因数问题将继续成为电气系统管理的一个关键方面，确保能源得到有效和可持续的利用。