During the operation of dense bus duct, due to the heat generated by the current passing through the conductor and the change of ambient temperature, thermal expansion and contraction will inevitably occur. The thermal expansion and contraction compensation design is the key to coping with this physical change, and it plays an important role in many aspects of system stability.
This compensation design can first effectively alleviate the structural stress caused by temperature changes. When the bus duct expands due to heat, if there is no compensation device, the conductor and the shell will generate huge thrust due to elongation, which may cause the fixed bracket to deform, the bus duct itself to bend, and even the connection to loosen. The compensation design sets a retractable connection structure to allow the bus duct to freely extend when the temperature rises and contract smoothly when the temperature drops, so as to release the stress generated by the expansion and contraction, avoid stress accumulation inside the structure, and protect the frame, bracket and connection parts of the bus duct from damage, and maintain the integrity of the overall structure.
In terms of ensuring the reliability of conductor connection, compensation design is also indispensable. The conductors of the bus duct are connected to each other through joints to form a complete conductive path. The expansion and contraction caused by temperature changes can easily cause displacement at the joints. If the displacement is not controlled, it will cause poor contact of the conductor and increase the contact resistance. The increase in contact resistance will further aggravate the heating, forming a vicious cycle. In severe cases, it may cause the joint to overheat and burn, resulting in power supply interruption. The compensation design allows the conductor to maintain a good contact state during expansion and contraction through elastic connectors or slidable joint structures. Even if there is a certain displacement, the continuity of current transmission can be guaranteed to avoid the normal operation of the system due to connection problems.
For the safety of the entire power supply system, the compensation design plays an important protective role. When the bus duct expands and contracts violently due to temperature changes, if the structural force exceeds its bearing limit, the shell may rupture and the conductor may be exposed, causing safety hazards such as short circuit and electric shock. The compensation design limits the deformation of the bus duct within a safe range through reasonable expansion and contraction control, ensures that the shell always remains closed, and the insulation distance between the conductors and between the conductor and the shell is not affected, thereby reducing the safety risk caused by structural deformation and providing a guarantee for the safe operation of the system.
In terms of adapting to different environmental conditions, the compensation design enhances the environmental adaptability of the system. In areas or environments with large temperature differences, the expansion and contraction of the bus duct is more obvious. If there is a lack of effective compensation measures, its operating state will change greatly with temperature fluctuations, and stability is difficult to guarantee. The compensation design can automatically adjust the expansion and contraction according to the change of ambient temperature, so that the bus duct can maintain a stable structural form and conductive performance under extreme conditions such as severe cold and heat, and will not have functional abnormalities due to drastic changes in ambient temperature, thereby expanding the scope of application of the bus duct and ensuring the stable operation of the system in complex environments.
In addition, the compensation design can also reduce the impact of vibration on the system. When the bus duct is in operation, the electromagnetic force generated by the current passing through the conductor may cause slight vibrations, and the expansion and contraction caused by temperature changes will aggravate this vibration. If the vibration is not effectively controlled, it will cause the connection parts to loosen and the structure to fatigue in the long run. The elastic elements in the compensation design can absorb part of the vibration energy, alleviate the impact of vibration on the bus duct structure, reduce the wear and damage caused by vibration, extend the service life of the equipment, and indirectly ensure the stability of the long-term operation of the system.
From the perspective of system maintenance, the compensation design reduces the maintenance cost and difficulty. If the bus duct has structural deformation or connection failure due to thermal expansion and contraction, frequent repairs or replacement of parts are required, which not only affects the normal operation of the system, but also increases the maintenance workload. The compensation design reduces the occurrence of such faults, allowing the bus duct to maintain a stable operating state for a longer period of time, reducing the number of maintenance times and costs, while also reducing the risk of system instability caused by improper maintenance, providing convenience for the efficient operation of the system.
In short, the thermal expansion and contraction compensation design of dense bus ducts ensures the stability of the system in all aspects by relieving structural stress, ensuring conductor connection, improving safety performance, enhancing environmental adaptability, reducing vibration impact, and reducing maintenance costs, so that it can operate reliably under various working conditions, providing a solid foundation for the safe and efficient transmission of electricity.
