apparent power

简明释义

表观功率

英英释义

例句

1.Electrical engineers often calculate apparent power to determine the correct specifications for electrical installations.

电气工程师通常计算视在功率以确定电气安装的正确规格。

2.The generator's apparent power is measured in volt-amperes (VA), which includes both active and reactive power.

发电机的视在功率以伏安（VA）为单位测量，包括有功功率和无功功率。

3.To ensure the system operates efficiently, we must consider the apparent power when sizing transformers.

为了确保系统高效运行，我们在选择变压器时必须考虑视在功率。

4.In an AC circuit, the apparent power can be higher than the actual power consumed by the load.

在交流电路中，视在功率可能高于负载实际消耗的功率。

5.The relationship between apparent power, real power, and reactive power is defined by the power triangle.

在功率三角形中，视在功率、有功功率和无功功率之间的关系被定义。

作文

In the realm of electrical engineering, the term apparent power refers to the total power that flows in an alternating current (AC) circuit. It is a combination of both active power, which performs useful work, and reactive power, which oscillates between the source and the load. The unit of measurement for apparent power is the volt-ampere (VA), and it is crucial for understanding how electrical systems operate efficiently. To grasp the concept of apparent power, one must first differentiate between active power and reactive power. Active power, measured in watts (W), is the actual power consumed by the devices to perform useful work, such as lighting a bulb or running a motor. On the other hand, reactive power, measured in volt-amperes reactive (VAR), does not perform any real work but is necessary for maintaining the voltage levels that allow active power to flow through the system. The relationship between these three types of power is often represented in a power triangle, where apparent power is the hypotenuse, active power is one leg, and reactive power is the other.Understanding apparent power is essential for engineers and technicians who design and manage electrical systems. For instance, when sizing electrical equipment, it is imperative to consider apparent power to ensure that the system can handle the total power demand without overloading. If only active power were considered, the equipment might be undersized, leading to potential failures or inefficiencies. Moreover, the power factor, which is the ratio of active power to apparent power, plays a significant role in energy efficiency. A low power factor indicates that a large portion of the apparent power is reactive, which means that more current is required to deliver the same amount of active power. This can result in higher energy costs and increased losses in the electrical distribution system. Therefore, improving the power factor by reducing reactive power is often a focus for many industries aiming to enhance their energy efficiency.In practical applications, the concept of apparent power is vital in various sectors, including manufacturing, telecommunications, and commercial buildings. For example, in a manufacturing plant with numerous motors and inductive loads, understanding the apparent power helps in designing an effective power distribution system. Additionally, utility companies monitor apparent power to ensure that they can meet the demands of their customers while maintaining grid stability.In conclusion, the term apparent power encapsulates a fundamental aspect of AC circuits that combines both active and reactive power. Its significance extends beyond theoretical concepts; it has practical implications in the design, operation, and management of electrical systems. By understanding and managing apparent power, engineers can optimize energy usage, reduce costs, and improve the reliability of electrical systems. As technology continues to advance, the importance of mastering concepts like apparent power will only grow, making it a critical area of study for future electrical professionals.

在电气工程领域，术语表观功率指的是在交流电（AC）电路中流动的总功率。它是有功功率和无功功率的组合，有功功率用于执行有用的工作，而无功功率则在源和负载之间振荡。表观功率的测量单位是伏安（VA），它对于理解电气系统如何高效运行至关重要。要理解表观功率的概念，首先必须区分有功功率和无功功率。有功功率以瓦特（W）为单位，是设备执行有用工作的实际功率，例如照明灯泡或运行电动机。另一方面，无功功率以伏安无功（VAR）为单位，不执行任何实际工作，但对于维持允许有功功率流过系统的电压水平是必要的。这三种功率之间的关系通常在功率三角形中表示，其中表观功率是斜边，有功功率是一个边，无功功率是另一个边。理解表观功率对设计和管理电气系统的工程师和技术人员至关重要。例如，在选择电气设备时，必须考虑表观功率，以确保系统能够处理总功率需求而不发生过载。如果只考虑有功功率，设备可能会被低估，从而导致潜在的故障或低效。此外，功率因数，即有功功率与表观功率的比率，在能源效率中起着重要作用。低功率因数表明表观功率中有很大一部分是无功的，这意味着需要更多的电流来传递相同数量的有功功率。这可能导致更高的能源成本和电力分配系统中的增加损耗。因此，通过减少无功功率来改善功率因数通常是许多行业提高能源效率的重点。在实际应用中，表观功率的概念在制造业、电信和商业建筑等各个行业中至关重要。例如，在一个拥有众多电动机和感性负载的制造工厂中，了解表观功率有助于设计有效的电力分配系统。此外，公用事业公司监控表观功率，以确保他们能够满足客户的需求，同时维护电网的稳定性。总之，术语表观功率概括了交流电路的一个基本方面，它结合了有功功率和无功功率。它的重要性超越了理论概念；在电气系统的设计、操作和管理中具有实际意义。通过理解和管理表观功率，工程师可以优化能源使用，降低成本，提高电气系统的可靠性。随着技术的不断进步，掌握像表观功率这样的概念的重要性只会增加，使其成为未来电气专业人士研究的关键领域。