Turn the time to shorten the time of more than half!Power supply and repair day and night fight and high temperature race

Jimu Journalist Cao Lei

Correspondent Wang Xin

Intern Zou Lingyi

Wuhan's continuous high temperature weather has brought continuous increase in electricity load, and some power facilities inevitably encounter strong pressure. On August 3, an underground cable from Jiangxia District, Wuhan City failed due to the high power load. In order to ensure the normal power consumption of this area, the State Grid Wuhan Power Supply Company sent a total of more than 120 people's repair and electricity guarantee teams to cooperate with the peak pre -summer plan and high -tech testing technology, and the overhaul of the past 72 hours was sent to power and sent electricity to electricity. The time is shortened to more than 30 hours to make the regional power supply more stable.

At 19:31 on August 4, the line resumed normal operation

More than 120 people invest in high -voltage cables to repair and keep electricity

At 9 am on August 3rd, the National Grid Wuhan Power Supply Company's Transmission Cable Transport Inspection Branch used an online monitoring system to find that the 220 kV summer tour two lines failed due to excessive power supply load and must be repaired immediately.

"Through online intelligent monitoring, we quickly locked the approximate scope of the fault development, and then immediately sent the inspection team to perform artificial investigation to find the fault point at the fastest speed." Chen Yang, deputy squad leader, introduced that after careful inspection of the lock -up range, the repair staff quickly found the failure point in the Huangjiahu High -pressure Tunnel.

After finding the fault point, more than 20 repair personnel rushed to the scene and went deep into the underground tunnel for homework. At the same time, a team of nearly a hundred people on the other side began to provide comprehensive power supply guarantee within the service scope of fault cables.

It turns out that in order to ensure the stability of social stability under high temperature and the application technical means of the power supply department, other high -voltage lines are used to share the electricity load of the faulty line, and the more than 100 people's insured teams are to ensure that there will be no any time during this period. Power supply to ensure the normal power consumption of residents.

Multi -party scheduling materials to improve efficiency with high -tech improvement

Under the continuous high temperature, urban electricity load surges, and line repair is to fight against time and high temperature race. "In order to complete the repair at the fastest speed, our transportation inspections, materials, dispatching and other front lines were united, and all the equipment required for repair was sent overnight." At 16:00 on August 4, stood in the underground tunnel of Huangjiahu Lake. Yangyan's eyes are firm. In front of him, the completed cable that has been replaced is undergoing the final seal. After about three hours, the entire repair can be completed.

In the underground tunnel at this time, the temperature seemed to be as high as the outdoor, but the whole environment was very hot, and the respiration of people was a little rapid. The repair personnel who were working were all sweaty. Two of them were standing in the pipe gallery, holding the fire -spraying tool, completely sealed the high -voltage cable, and the temperature around him became higher.

"After the supplies are in place, we have completed the repair of the cable in only more than ten hours. Next, we only need to pass the pressure resistance test to send electricity." Sun Changqun, a class leader, introduced that this time the high -tech method of high -pressure cable exchange resistance testing was used to shorten the experiment time to 1 hour, and the entire repair time was shortened by more than half.

Promoting and exchanging resistance tests to improve the quality of power supply

At 6 o'clock in the evening on August 4th, Jimu Journalists came to the 220 kV Patriotic Sihe Sub -Power Station in Hongshan District, and found a high -pressure cable exchange test vehicle that was about to perform pressure -resistant tests. Beying on it, there was another electric car to power it.

"This is the first use of high -pressure cable communication resistance test vehicles in Wuhan, which can greatly improve the efficiency of cable repair." Sun Changqun told Jimu Journalists that according to the traditional practices of the past In the future, a 24 -hour air load test is needed to determine that everything can be restored to power supply. After using high -pressure cables to exchange pressure test vehicles, the entire test time can be controlled at about 1 hour, which greatly shortens the time of repairing electricity, as fast as possible to make high -voltage cables play, and finally improve the quality of the regional power supply.

At 18:30 on August 4th, under the operation of the staff, the newly accessable communication resistance test began.

At 19:31, the resistance test ended smoothly. After more than 30 hours after the failure, the 220 kV summer tour two rounds resumed normal operation.

It is understood that in the next power repair, Wuhan will fully promote the communication resistance test of high -voltage lines, shorten the repair time, improve the efficiency of repair, and make the regional power supply more stable.

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