The concept and use of ground wires was gradually formed in the early stages of the development of electrodynamics. At the end of the 19th century, with the construction of power systems and the popularization of electrical appliances, people began to realize the importance of ground wires. Here are some of the key moments in the development of ground in the development of electropower:
1.Early Electrical Research (Late 18th - Early 19th Century): During this period, scientists conducted preliminary studies of electrical phenomena, including electrostatics and electrical currents. However, the scale of the power system is relatively small, and the need for ground wires is not yet significant.
2.Development of the telegraph system (mid-19th century): With the construction of the telegraph system, people began to face the problem of the transmission of electric current and electromagnetic interference. To solve these problems, ground wires were used to transmit current through the earth back to the power point to reduce electromagnetic interference.
3.Early Popularity of Electric Systems and Electric Lights (Late 19th Century): When electric systems began to be established in cities and electric lights and other electrical devices began to become widespread, the need for electrical safety and system stability increased. At this time, it was recognized that passing through the ground wire could provide a safe path for discharging the current to protect the device and the human body from electric shock.
4.Standardization and protection measures for the power system (early 20th century): With the continuous development of the power system, the interconnection and interaction of various electrical devices are becoming more and more complex. In order to ensure the reliability and safety of the system, various standards and protection measures have been developed, including the use of ground wires.
Therefore, the concept and application of ground wire is gradually formed and perfected in the process of the development of electric power, and plays an important role in the construction of power system and the popularization of electrical equipment.