Can lightning arrester effectively suppress overvoltage and protect equipment from voltage fluctuations?
Publish Time: 2025-02-05
In power systems, overvoltage is an issue that cannot be ignored. It can be caused by a variety of reasons such as lightning strikes, operating errors or system failures, posing a serious threat to electrical equipment. However, with the key device of lightning arrester, the safety and stability of the power system is effectively guaranteed.
Lightning arrester is a protective device specially designed to suppress overvoltage. Its core working principle is based on nonlinear resistance characteristics, which can present a high resistance state when the system is operating normally, with almost no impact on the current and voltage of the system. However, once the system is subjected to overvoltage shock, the lightning arrester will quickly change to a low resistance state, directing the overvoltage energy to the ground, thereby protecting the electrical equipment connected in parallel from overvoltage damage.
The role of lightning arrester is particularly significant in thunderstorms. When lightning strikes a transmission line or equipment, it will generate extremely high lightning current and overvoltage. At this time, the lightning arrester can respond quickly and direct the lightning current to the ground to prevent it from invading electrical equipment and causing insulation breakdown or equipment damage. At the same time, the lightning arrester can also effectively suppress operational overvoltage and power frequency overvoltage, ensuring the stable operation of the power system under various working conditions.
It is worth mentioning that the lightning arrester not only has excellent overvoltage suppression ability, but also has good self-recovery characteristics. After suffering from overvoltage shock, the lightning arrester can quickly recover to a high resistance state and continue to provide protection for the system. This self-recovery characteristic enables the lightning arrester to maintain stable performance in long-term use, reducing operation and maintenance costs.
In addition, with the continuous advancement of technology, modern lightning arresters also have many advanced functions, such as fault indication and remote monitoring. These functions enable operation and maintenance personnel to detect and handle lightning arrester faults in a timely manner, prevent accidents from expanding, and further improve the safety and reliability of the power system.
In summary, the lightning arrester plays an irreplaceable role as the overvoltage guardian of the power system. It can effectively suppress overvoltage, protect equipment from voltage fluctuations, and ensure the safe and stable operation of the power system.
