On May 31, the third core of the “three-core six-ring†grid structure of the Guangdong Power Grid Corporation’s Zhongshan Power Supply Bureau was completed and put into operation. The station is the first 500 kV full indoor GIS substation of China Southern Power Grid Corporation. It will be built into a smart operation and maintenance demonstration station of China Southern Power Grid Corporation. It is reported that after the Wenshan substation is put into operation, it will add 1.5 million kilowatts of capacity to the Zhongshan Power Grid to further improve the power transmission and receiving capacity of Zhongshan Power Grid and ease the power supply pressure during the peak load period in Zhongshan City.
Take measures and guard the safety and control quality
In order to cope with the requirements of the Guangdong Central Control Integrated Power Outage Management and the Guangdong Power Grid Corporation's peak summer work arrangement, the Wenshan Substation was put into operation seven months ahead of schedule, which gave the original tight schedule a tight spring. ". The construction period is compact, and how to ensure construction safety and project quality is a top priority for project managers. Wu Jinyuan, project manager of the 500 kV owner project department of the Infrastructure Department of Zhongshan Power Supply Bureau said: "Take the scene and see every detail in your heart."
On February 19 this year (New Year's Day), Wu Jinyuan had already taken a vacation to the construction site of Wenshan Substation. Wu Jinyuan said: "The construction of the site has not stopped during the Chinese New Year. If the owner of the owner is not on site, the construction party may not be comfortable, and the work done is 'not pretty'." He said that the project team ended his vacation as early as he did. There are still many places on the scene. Since the construction of the Wenshan Power Transmission and Transformation Project started, the 500 kV owner project department is basically working overtime. Many people are still taking a day off every year.
On June 1, 2017, Wen Yufei was appointed as the deputy stationmaster (temporary person in charge) of the 500 kV Wenshan patrol center of the 2nd Substation Management Station of Zhongshan Power Supply Bureau, and was responsible for the establishment of Wenshan patrol center.
In November of the same year, in the absence of a lounge, no office, no canteen, the 15-person Wenshan patrol center team officially entered the scene, witnessing the Wenshan substation from scratch. When the main project of the Wenshan Substation started construction, the Wenyufei team began their "eat the earth" days, and every day they were on the dusty scene of the infrastructure project, but Wen Yufei felt very lucky because they could find the problem earlier.
On April 4 this year, when the duty supervisor Cao Xu inspected the installation process of the 35 kV capacitor assembly, he found that the grounding bolt was penetrating from top to bottom and did not meet the national standards. Cao Xu raised the problem and immediately let the construction unit rectify the problem. . They said: "Every detail in the construction process, they are more than the renovation of their new home." In September 2017, Wen Yufei led the Wenshan Tour Center to carry out the "youseeyouact" event and found a problem. The detailed status, reasons and handling opinions are recorded in detail, and follow-up processing is carried out. Finally, the station manager conducts comprehensive evaluation to form a closed-loop management of PDCA. As of the Wenshan substation, a total of more than 200 problems were discovered in Wenshan's patrol, and all the rectifications were completed, ensuring the “zero defect†operation of the Wenshan substation.
In addition, the Party branch of the Infrastructure Department of Zhongshan Power Supply Bureau fully exerted the leading role of party building, carried out joint construction activities with the party branches of various construction units, and strived to build a co-construction model of “party building + securityâ€, and proposed security risk reminders and safety supervision to the scene and party members. The "three security" measures of zero safety violations eliminate hidden dangers and prevent safety accidents.
The formation of "three cores", Zhongshan Power Grid is more stable and reliable
In recent years, Zhongshan's economy has always maintained a medium-to-high-speed development, and power demand is strong. In the past two years, the city's power load has increased by about 10% year by year, and electricity has increased by more than 5%. According to the forecast of the dispatching center of Zhongshan Power Supply Bureau, the highest power load in the city will exceed 6 million kilowatts in 2018, and the power consumption will be 28.8 billion kWh, up 10.45% and 5.91% year-on-year.
At present, Zhongshan Power Grid only relies on the “Double Core†power supply of the 500 kV Xiangshan Substation and the Guishan Substation. The power supply limit is only 4 million kV. Compared with the current peak load of 6 million kilowatts, there is a power supply gap of 2 million kilowatts. Rely on the peak output of power plants in the Zhongshan area. In the event that the power plant unit fails to peak and the main equipment of the power grid is out of service, the northern power grid of Zhongshan will have a large-scale accident power limit, involving 13 power supply users in the township. The power supply situation is quite severe.
The Wenshan Substation was completed and put into operation in time, which greatly eased the tension in the northern part of Zhongshan Power Grid. It is understood that the Wenshan Substation will add 1.5 million kilowatts of capacity to the Zhongshan Power Grid, greatly easing the power supply pressure during the peak load period in Zhongshan City, and also providing the main channel for the grid connection of the dense eastern power plant. At the same time, Wenshan Substation has strengthened the connection between Zhongshan Power Grid and the provincial network, and will become an important energy transfer channel in the Pearl River Delta region.
Zhongshan Power Supply Bureau dispatching center operation mode (advanced) special responsibility Fang said: "The Wenshan substation production has reduced the operation and maintenance pressure of the frontline staff during the peak summer period, so that everyone can more calmly cope with the next peak load moment of the power grid." After the operation, the “three cores†of Zhongshan Power Grid were formally formed, and the grid structure was more stable and reliable. The grid operation mode during the peak summer period will be more flexible and efficient, and it can better cope with the temporary maintenance of the main equipment.
Intelligent operation and maintenance of equipment in the station
It is reported that after the project is put into operation, Wenshan Substation will simultaneously invest 4 intelligent inspection robots, including two indoor GIS patrol robots, one relay room hanging rail robot, and an outdoor equipment patrol robot for daily operation and maintenance in the station. Among them, the robot named "Spider-Man" is the first relay inspection robot of China Southern Power Grid Corporation. Wenshan Substation will realize the full coverage of intelligent operation and maintenance of equipment in the station, and become a demonstration substation of intelligent operation and maintenance of China Southern Power Grid Corporation.
At present, the intelligent inspection robots of Wenshan Substation mainly carry out daily inspections of substations, transmission lines, power distribution rooms and lines through 3D laser navigation, machine vision and image recognition technologies, automatically generate patrol reports, and patrol data and alarm information. Unified upload to the system master. After the robot is put into operation, the inspection efficiency in the station will be greatly improved. For example, Wen Weifei, the stationmaster of the station, said that in the case of the operation check platen of the maintenance room, there are about 100 protective screens for a 500 kV substation with pressure plates, and each of the protective screens has about 30 pressure plates. It takes two people and it takes at least three days. The robot can generate a platen table by checking the data on the camera, and identify the abnormal platen position, quickly lock the fault, and the inspection time is less than 3 hours.
At the end of 2018, the 500 kV Wenshan Substation will build a smart operation and maintenance platform including dozens of functions such as online monitoring, intelligent inspection and intelligent maintenance. At that time, the patrol data of all equipments of the whole station will realize intelligent and intensive unified management, realize the penetration of operational information and management information, transparent equipment information and operation information, and further improve the quality and risk of the whole process of equipment, operation and management. Control.
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