kilovolt-ampere (Kva)

简明释义

千伏安

英英释义

例句

1.The new solar panel installation is designed to handle up to 200 kilovolt-ampere (Kva) of energy.

新的太阳能电池板安装设计能够处理高达200千伏安 (Kva)的能量。

2.To ensure the safety of the electrical system, we need a transformer rated at least 500 kilovolt-ampere (Kva).

为了确保电气系统的安全，我们需要一个额定至少为500千伏安 (Kva)的变压器。

3.For this industrial application, we require a backup power supply of 1500 kilovolt-ampere (Kva).

对于这个工业应用，我们需要一个1500千伏安 (Kva)的备用电源。

4.The data center's cooling system consumes approximately 300 kilovolt-ampere (Kva) during peak hours.

数据中心的冷却系统在高峰时段消耗大约300千伏安 (Kva)。

5.The generator can produce up to 1000 kilovolt-ampere (Kva) of power, making it suitable for large events.

该发电机可以产生高达1000千伏安 (Kva)的电力，适合大型活动。

作文

In the world of electrical engineering, understanding the concept of kilovolt-ampere (Kva) is crucial for anyone involved in power generation and distribution. The term kilovolt-ampere (Kva) refers to a unit of apparent power in an electrical circuit, which combines both the voltage and current flowing through the system. To better understand this concept, it is essential to break down what apparent power means and how it differs from real power and reactive power.Apparent power, measured in kilovolt-ampere (Kva), represents the total power that flows in an electrical system. It is calculated by multiplying the voltage (in kilovolts) by the current (in amperes). This measurement is particularly important in alternating current (AC) systems, where the relationship between voltage and current can be more complex due to phase differences. Unlike real power, which is measured in watts and represents the actual power consumed by an electrical device, kilovolt-ampere (Kva) encompasses both the real power and the reactive power present in the system.Reactive power is another critical aspect of electrical systems. It is the power that oscillates between the source and the load, primarily due to inductive or capacitive components in the circuit. While reactive power does not perform any useful work, it is necessary for maintaining the voltage levels required for the system to function correctly. The relationship among these three types of power—real power, reactive power, and apparent power—can be illustrated using the power triangle, where kilovolt-ampere (Kva) forms the hypotenuse, real power forms one leg, and reactive power forms the other leg.The significance of kilovolt-ampere (Kva) extends beyond theoretical calculations; it has practical implications in electrical installations. For instance, when selecting transformers and generators, engineers must consider the kilovolt-ampere (Kva) rating to ensure that the equipment can handle the expected load without overheating or failing. Additionally, electrical utilities often charge customers based on their demand in kilovolt-ampere (Kva), making it essential for businesses to monitor and manage their power consumption effectively.Moreover, understanding kilovolt-ampere (Kva) is vital for energy efficiency initiatives. By optimizing the power factor—the ratio of real power to apparent power—companies can reduce their energy costs and minimize losses in the electrical system. This optimization often involves installing power factor correction devices, which help to align the voltage and current waveforms, thus improving the overall efficiency of the system.In conclusion, the term kilovolt-ampere (Kva) plays a fundamental role in the field of electrical engineering. It provides insights into the behavior of electrical systems and helps engineers design efficient and reliable power networks. Whether you are a student learning about electrical concepts or a professional working in the industry, a solid grasp of kilovolt-ampere (Kva) is essential for navigating the complexities of power generation and distribution. As the demand for electricity continues to rise globally, the importance of understanding and effectively managing kilovolt-ampere (Kva) will only increase, underscoring its relevance in our ever-evolving technological landscape.

在电气工程的世界中，理解千伏安（Kva）的概念对任何参与发电和配电的人来说都是至关重要的。千伏安（Kva）一词指的是电路中视在功率的单位，它结合了流经系统的电压和电流。为了更好地理解这一概念，有必要分解视在功率的含义以及它与实际功率和无功功率的区别。视在功率以千伏安（Kva）为单位，代表电气系统中流动的总功率。它通过将电压（以千伏为单位）乘以电流（以安培为单位）来计算。这个测量在交流（AC）系统中尤其重要，因为电压和电流之间的关系由于相位差可能更加复杂。与以瓦特为单位测量的实际功率不同，实际功率表示电气设备实际消耗的功率，而千伏安（Kva）则包含系统中存在的实际功率和无功功率。无功功率是电气系统中的另一个关键方面。它是由于电路中的感性或容性元件而在源头和负载之间振荡的功率。虽然无功功率不执行任何有用的工作，但它对于维持系统正常运行所需的电压水平是必要的。这三种功率类型——实际功率、无功功率和视在功率之间的关系可以通过功率三角形来说明，其中千伏安（Kva）形成斜边，实际功率形成一条边，无功功率形成另一条边。千伏安（Kva）的重要性不仅限于理论计算；它在电气安装中具有实际意义。例如，在选择变压器和发电机时，工程师必须考虑千伏安（Kva）额定值，以确保设备能够处理预期负载而不会过热或失效。此外，电力公司通常根据客户的千伏安（Kva）需求向其收费，这使得企业有效监控和管理电力消耗变得至关重要。此外，理解千伏安（Kva）对于能源效率倡议至关重要。通过优化功率因数——实际功率与视在功率的比率——公司可以降低能源成本并减少电力系统中的损耗。这种优化通常涉及安装功率因数校正设备，这有助于对齐电压和电流波形，从而提高系统的整体效率。总之，千伏安（Kva）一词在电气工程领域发挥着基础性作用。它提供了对电气系统行为的深入了解，并帮助工程师设计高效可靠的电力网络。无论您是学习电气概念的学生还是在行业中工作的专业人士，扎实掌握千伏安（Kva）都是应对发电和配电复杂性的关键。随着全球对电力需求的不断上升，理解和有效管理千伏安（Kva）的重要性只会增加，强调了其在我们不断发展的技术环境中的相关性。