transmission line

简明释义

传输线;馈电线

英英释义

例句

1.Maintenance crews often work on transmission lines to ensure they operate safely.

维护团队经常在输电线路上工作，以确保其安全运行。

2.The efficiency of the transmission line can significantly affect the overall energy loss.

在输电线路的效率会显著影响整体能量损失。

3.We need to inspect the transmission line for any damages after the storm.

暴风雨过后，我们需要检查输电线路是否有任何损坏。

4.The power from the generator travels through the transmission line to reach the substations.

发电机产生的电力通过输电线路到达变电站。

5.High-voltage transmission lines are essential for delivering electricity over long distances.

高压输电线路对于长距离输送电力至关重要。

作文

In today's world, the importance of electricity cannot be overstated. It powers our homes, industries, and transportation systems. One of the critical components in the delivery of electric power is the transmission line (输电线). A transmission line is a system of wires and supporting structures that carries high-voltage electricity over long distances from power plants to substations. Understanding how transmission lines work is essential for anyone interested in energy infrastructure and its role in modern society.The basic function of a transmission line is to transport electrical energy efficiently. When electricity is generated at a power plant, it needs to be transmitted to areas where it is consumed. This is where transmission lines come into play. They are designed to minimize energy loss during transmission, which is crucial because electricity can lose a significant amount of energy as heat if not transmitted properly.To achieve this efficiency, transmission lines operate at high voltages, often ranging from 110 kV to 765 kV or more. The reason for using high voltage is that it allows for the reduction of current in the wires, which in turn reduces resistive losses. The higher the voltage, the lower the current for the same amount of power transmitted. This principle is governed by Ohm's law, which states that power loss due to resistance is proportional to the square of the current. Thus, by increasing the voltage, we can transmit the same amount of power with less loss.There are various types of transmission lines, including overhead lines and underground cables. Overhead transmission lines are the most common and consist of conductors suspended between towers or poles. These lines are usually made of aluminum or copper, materials chosen for their excellent conductivity and lightweight properties. On the other hand, underground transmission lines are used in urban areas where overhead lines might not be feasible due to aesthetic or safety concerns. These lines are more expensive to install and maintain but offer advantages in terms of reduced visual impact and protection from weather-related disruptions.The design and construction of transmission lines involve careful planning and engineering. Factors such as geographical terrain, environmental impact, and regulatory requirements must be considered. Engineers must also account for potential issues such as electromagnetic interference and the physical stresses placed on the lines by wind, ice, and temperature changes. Furthermore, maintaining the integrity of transmission lines is crucial for ensuring a reliable power supply. Regular inspections and maintenance help identify potential problems before they lead to failures or outages.In conclusion, transmission lines are vital for the efficient distribution of electricity across vast distances. They play a key role in connecting power generation facilities to consumers, ensuring that we have access to the energy we need. As technology continues to evolve, the design and operation of transmission lines will likely improve, leading to even greater efficiencies and reliability in our energy systems. Understanding the significance of transmission lines helps us appreciate the complex infrastructure that supports our modern way of life.

在今天的世界中，电力的重要性不容小觑。它为我们的家庭、工业和交通系统提供动力。电力传输的关键组成部分之一是输电线。输电线是一种由电缆和支撑结构组成的系统，负责将高压电力从发电厂长距离传送到变电站。了解输电线的工作原理对任何对能源基础设施及其在现代社会中的作用感兴趣的人来说都是至关重要的。输电线的基本功能是高效地运输电能。当电力在发电厂生成后，它需要被传输到消费区域。这就是输电线发挥作用的地方。它们的设计旨在最小化传输过程中的能量损失，这一点至关重要，因为如果没有适当的传输，电力可能会作为热量损失大量能量。为了实现这种效率，输电线通常在高电压下运行，电压范围通常从110千伏到765千伏或更高。使用高电压的原因是它可以减少电线中的电流，从而减少电阻损耗。电压越高，在传输相同功率的情况下，电流就越低。这个原理受欧姆定律的支配，后者指出，由于电阻造成的功率损失与电流的平方成正比。因此，通过提高电压，我们可以以更少的损失传输相同的电力。输电线有多种类型，包括架空线路和地下电缆。架空输电线是最常见的，由悬挂在塔或杆之间的导体组成。这些线路通常由铝或铜制成，这些材料因其优良的导电性和轻质特性而被选中。另一方面，地下输电线用于城市地区，在这些地区，架空线路由于美观或安全问题可能不可行。这些线路的安装和维护成本更高，但在视觉影响减少和防止天气相关干扰方面具有优势。输电线的设计和建造涉及仔细的规划和工程。地理地形、环境影响和法规要求等因素必须考虑在内。工程师还必须考虑潜在问题，如电磁干扰以及风、冰和温度变化对线路施加的物理压力。此外，维护输电线的完整性对于确保可靠的电力供应至关重要。定期检查和维护有助于在问题导致故障或停电之前识别潜在问题。总之，输电线对于在广阔距离上高效分配电力至关重要。它们在连接发电设施和消费者之间发挥了关键作用，确保我们能够获得所需的能源。随着技术的不断发展，输电线的设计和操作可能会得到改善，从而使我们的能源系统在效率和可靠性方面进一步提升。理解输电线的重要性帮助我们欣赏支撑我们现代生活方式的复杂基础设施。