Urumqi, August 8 (Yang Chenggang, Wei Chao) "The seismic monitoring device of the 3 kV Kekeya substation has been installed and passed the on-site acceptance. Recently, Liu Fang, a substation operation and maintenance personnel of the State Grid Turpan Power Supply Company, reported to the person in charge of the work. This is the seventh substation of Turpan Power Grid to complete the construction of a new seismic monitoring substation this year.
Turpan Basin is located in the east of the Tianshan Mountains, surrounded by mountains, because it is located in the north and south Tianshan seismic zone, earthquake frequency and wide range, easy to cause ground collapse, pole tower tilt, etc., which threatens the safe operation of the power grid. In order to improve the seismic monitoring level of Turpan power grid substations and provide an important reference for power grid disaster assessment, the State Grid Turpan Power Supply Company plans to install seismic monitoring substations in eight important substations such as 7 kV Xiaocaohu and Loulan from mid-July to mid-August this year, and connect them to the seismic monitoring and evaluation system of Xinjiang Power Grid.
The staff of the substation operation and maintenance center of the State Grid Turpan Power Supply Company installed a seismic monitoring substation device at the 220 kV Kokoya substation. Photo by Zhang Zhongliang
Seismic monitoring is an important way to perceive the risk of earthquake disasters during the substation operation phase. The new substation seismic monitoring system installed this time is independently developed by the China Electric Power Research Institute, including seismic monitoring terminals, monitoring substations and disaster assessment software, which can find and record abnormal vibration waveforms and upload signal data to the seismic monitoring and seismic damage assessment system in real time. When the amplitude exceeds the limit value, seismic monitoring can be triggered, and the seismic damage assessment system will quickly analyze and judge the seismic response data of the earthquake-affected area and the facilities in the substation, obtain the impact assessment of the earthquake on the power grid equipment, and generate a disaster assessment report.
"The new seismic monitoring system can achieve 24-hour uninterrupted monitoring, which can provide a basis for the assessment of electrical equipment damage in substations after earthquakes, thereby improving the efficiency of emergency repair of substations after earthquakes." Zhang Zhongliang, special director of the technical transformation and overhaul project of the substation operation and maintenance center of the State Grid Turpan Power Supply Company, said.
In the next step, the State Grid Turpan Power Supply Company plans to complete the construction of the remaining substation seismic substation by August 8, accelerate system commissioning and application, pay close attention to system monitoring data, combine the digital transformation of substation operation and maintenance, optimize emergency plans for earthquakes and other emergencies, and continue to improve the safe operation level of substations. (End)