1. Zhenjiang: Sensors are used in the fault early warning system of shunt capacitors in substations.
Recently, State Grid Zhenjiang Power Supply Company's Substation Maintenance Room "Research on Fault Early Warning Technology of Parallel Power Capacitors" won the national intellectual property patent.
Shunt power capacitor is one of the main electrical equipment in substation, which can improve the transmission capacity of transmission lines and is of great significance to the safe operation of power grid. However, due to the influence of environment, working temperature, working voltage and other factors, capacitor damage accidents occur from time to time, which seriously affects the normal operation of the power grid. At present, the maintenance of parallel power capacitors is mainly through regular off-line routine tests. However, it can't be controlled in advance, which is easy to cause the fault range of capacitor equipment to expand and the outage time to increase.
At present, this technology has been widely used in 57 substations in this city 1 10 kV and below, and it is estimated that the annual cost can be reduced by about 70 million yuan.
2. The application of sensors in monitoring bridge structure data in Tianjin Binhai area.
165438+1October 13. The first regional bridge group health monitoring data center in North China-Tianjin Binhai New Area Bridge Structure Health Monitoring Data Center was put into use.
It is reported that the monitoring data center mainly monitors the main girder deflection, structural temperature, earthquake, ship collision, cable force and vibration of the bridge through various sensors and cameras at the bridge site.
At present, the monitoring data center has tested six key bridges in the new area, and the bridges above the intermediate level in the new area will be gradually included in the supervision of the data center in the future.
3. Zhengzhou started the intelligent heating network sensing and monitoring system for the first time.
Heating this winter, Zhengzhou started the intelligent heating network for the first time. According to reports, this year, Zhengzhou Thermal Power Corporation installed various sensors on the main networks of the two projects of "Introducing Heat into Zhengzhou" and the main networks of the areas north of Jinshui Road and south of huanghe road in the urban area, and built an agile and efficient safety system for heating pipe network.
It is reported that after the intelligent heating network is put into operation, technicians can judge whether there is a problem in the main network through the changes of technical indicators such as temperature, pressure and noise, and give an early warning of hidden dangers, thus effectively preventing the occurrence of events that affect the safe operation of the heating network, such as pipeline explosion and hot water leakage.