Jianghan Energy Technology helps build a smart grid

China Petroleum & Chemical News.
com recently, Jianghan Oilfield Jianghan Energy Company's power control center integrated control system automatically alarmed, indicating that the 6kV bus voltage of the oilfield 35kV bit substation is lower than the set voltage.
The dispatcher adjusted the main transformer gear.
, Immediately restore the voltage to normal, and all steps are completed on the grid control platform
.

"This kind of abnormal voltage has little impact on the user's power supply, but by setting abnormal operating data alarms, the operation of the equipment can be adjusted in time to ensure the quality of the user's power supply
.

In recent years, energy companies have used new technology applications and smart grid transformation as breakthrough points to accelerate the deep integration of digital technology and the main business of grid operation, maintenance and supply, continuously improve the modern management level of oilfield power grids, and provide safe, high-quality and stable oilfield production.

Integrated deployment, lower failure rate

The power line is the "lifeline" of oil well production
.

Zhang Qingrong, on-duty dispatcher of the Power Control Center, conducted remote fault diagnosis through the control platform, and accurately detected the fault point on the 5 km line between the two switches, and then isolated the section of the line through the control platform, and quickly adjusted the operation mode to restore the non-faulty section of the line Power supply to ensure the normal operation of other pumping units
.

"In the past, similar failures occurred and the entire line was required to be
powered off.

　　In recent years, power technology has developed rapidly
.

　　"After a series of intelligent transformations, a safe, efficient, and advanced remote network monitoring system with the integrated control platform as the hub has been established to realize the'integrated' intelligent inspection of all monitoring units of 94 power lines in 14 substations in the oil region.
Intelligent diagnosis and timely warning of safety risks
.

　　On August 17, the oil level of the oil conservator of the No.
2 main transformer of the unattended 35 kV two-factory transformer was close to full.
The remote inspection of the company's power control center control platform instantaneously captured this picture and gave an early warning.
The central controller quickly Informed the electric power inspection duty personnel to go to the site to check and found that the oil level of the No.
2 main transformer oil pillow was clogged causing the oil level to be falsely high, and immediately deal with it to avoid an oil spill obstacle in the main transformer
.

　　"In the past, we organized operation and maintenance personnel to conduct inspections on substations on a regular basis, which not only took time and effort, but also found that the problem-solving efficiency was low
.

　　At present, the monitoring platform can not only dynamically monitor the operation status of substations and lines 24 hours a day, but also automatically save the data after the power grid fails, which is convenient for technicians to perform fault analysis and play the role of big data in improving the stability of the power grid.
Role
.

　　This year, the company’s line failure and outage time was 1.
1 hours per year, a year-on-year decrease of 35%
.

　　Use new technology to ensure more efficient supply

　　On September 5, the operators of the company’s electric power transportation inspection center used drones to inspect the 110 kV Guangwang line and found that an insulator on pole 47 was damaged.
Once the insulator breaks down, it will cause a large-scale blackout in the oilfield power grid.
, And replace it immediately to eliminate a major hidden danger
.

　　“We use drones to conduct special patrols on areas that are difficult for people to enter, or lines that must be climbed to discover.
This not only improves the quality of line patrols, reduces the risk of manual operations, but also greatly improves the speed and efficiency of troubleshooting line faults
.
” Wang Hua, the leader of the operation patrol team of the company's electric power transportation inspection center, introduced that, especially in high temperature and cold weather, the adverse effects of weather on manual patrols can be effectively avoided
.

　　Oilfield power grids have developed along with the development and construction of oilfields.
The power grid has long transmission lines, multiple branches, and complex line distribution sections.
A large number of inspection and maintenance staff are required to maintain the lines.
Manual line inspections have problems of low efficiency and high risks
.

　　In order to solve the problems of low power inspection efficiency and insufficient inspection personnel, the company promotes the application of drone inspections and infrared imaging equipment temperature measurement in daily inspections, especially the fine drone inspections of faulty trip lines , At night and during periods of high load, infrared temperature measurement of the main transformer body and joints, wire and lead clamps of the mains of the power grid, and the bushings on each side of the transformer have achieved good results
.

　　"Infrared imaging equipment, like a'chest radiograph', can promptly detect defects that have occurred but look good on the surface of electrical equipment, and carry out early treatment to avoid hidden dangers and accidents
.
" said Zhou Hui, deputy director of the Electric Power Transportation Inspection Center In the past, similar situations were basically difficult to find.
Only after the hidden dangers were further expanded, the inspections could be discovered by the personnel, which was inefficient and increased the workload
.

　　Since the beginning of this year, the company has promptly discovered and dealt with five major hidden defects such as heat generation at joints, broken insulators, and insufficient distance between wires.
Compared with previous years, the average efficiency has increased by about 30%, and the number of power-guarantees has decreased by 29%
.
(Xie Jiang, Liu Li, Zhou Yanli, Liang Hongyong)