INNO fibre optic temperature sensors ,temperature monitoring systems.
The modern urban construction has put forward higher requirements for our power transmission. With the continuous development of the power industry, urban overhead transmission lines are being replaced by underground high-voltage cables. However, due to the complex environment in which underground cables are located, the insulation performance of underground cables becomes a key issue in determining the reliability of power transmission. The aging and damage of cable insulation are closely related to the long-term operating core temperature. When cable lines are buried underground, it is particularly important to monitor the operating temperature of the cable lines, grasp their operating speed and condition, and provide a basis for future cable line selection and calculation of cable carrying capacity. As an emerging phenomenon in transmission lines, power cable tunnels play an important role in the operation of the power grid. Ensuring the safe operation of power cable tunnels is of great significance.
By monitoring the surface temperature of the cable and calculating the core temperature of the cable through conversion to determine its operating condition, a systematic evaluation is conducted, and the current carrying capacity of the system is calculated at any time to ensure the safe and economical operation of the cable system. By monitoring the temperature of the cable, the operating temperature of the cable can be controlled at any time, which can not only avoid long-term operation of the cable under overload, but also adjust the load of the cable in a timely manner according to the operating temperature, which is greatly beneficial for the safe and economical operation of the power system. Meanwhile, by comparing the impact of different cable laying methods on current carrying capacity, a basis is provided for the selection of cable laying methods in the future.
The monitoring system monitors the surface temperature of the cable lines on site in real time, and displays the temperature values of the monitored cables throughout the entire process in the system through software, so that operators can keep track of the operation of the cables at any time. Comparing the impact of different cable laying methods on current carrying capacity provides a basis for the selection of cable laying methods in the future.
The power tunnel is an important component of the urban power system transmission and distribution network, and is a key facility to ensure the safe, reliable, and economical operation of the power grid. By implementing fiber optic temperature monitoring and other measures on the cables inside the tunnel, the standardized management of power tunnels can be improved, providing a good environment for the safe operation of high-voltage power cables. At present, our bureau has multiple power tunnels under design and construction demonstration, and construction will be carried out in the near future. This puts higher requirements on the operation and management of power tunnels. The operation work will rely on advanced technological means, refined management, and strive towards low-cost, efficient, fully monitored, and low defect direction.