Due to technical limitations, a short-term power outage on the load side is required when replacing a 10 kV distribution drop fuse with power, mainly because the fuse fuse prevention problem of the drop fuse cannot be solved when the load is transferred. Huai'an Power Supply Company started the development of auxiliary devices with load replacement drop fuses in early 2017. The auxiliary devices are divided into pole fixed bases, insulated support rods, breaking switches, drain wires, insulation shielding tools, etc., and load transfer is realized by means of breaking switches. Solve the problem of fuse blowdown of drop fuses during load transfer. "The function of this auxiliary device is like to build a 'auxiliary bridge' next to the replaced fuse for normal current flow, so that the original fuse can be replaced and replaced." Zhang Dong, a working engineer of Huaian Power Supply Company Introduction. After several tests and technical improvements, the company realized the replacement of 10 kV distribution drop fuses without power failure, further expanding the range of non-blackout operations.
In terms of safety performance, the auxiliary device breaking switch can arbitrarily adjust the distance from the pole according to the situation of the job site, effectively avoiding the damage caused by the load transfer and the arcing under extreme conditions to the workers and equipment. The auxiliary support rod of the auxiliary device is made of epoxy resin, and the overall insulation protection performance fully meets the technical requirements for live working in the 10 kV distribution network ring network cabinet.
According to preliminary estimates, each time a live-fuse drop-off fuse can reduce the power outage time by about 80 minutes, a transformer with a rated power of 400 kW can supply 532 kWh more. Huai Safety City replaces more than 300 drop fuses every year, which can reduce the power outage time by 400 hours and generate economic benefits of about 87,000 yuan.
The significance of this achievement is also reflected in reducing the number of power outages and power outages, and improving the reliability of power supply for users. This is important for some 24-hour non-stop work enterprises, not only to avoid economic losses caused by accidental power outages, but also Greatly improved customer satisfaction. The result has been granted a national patent in 2017, and another patent is currently under review.
2.00Mm Pin Header Connector,2.0Mm Dip Vertical Type Connector,2.00Mm Pitch Vertical Type Connector,Dip Vertical Type Pin Header Connector
Shenzhen CGE Electronics Co.,Ltd , https://www.cgeconnector.com