The world-renowned "super project" Shenzhen-Zhongshan Corridor is about to be officially opened to traffic, and the driving distance on the east and west banks of the Pearl River Estuary will be shortened from nearly 3 hours to less than 30 minutes, and a one-hour living circle between major cities in the Greater Bay Area is just around the corner. On June 28, the reporter learned that China Southern Power Grid Corporation provides stable and reliable power supply for the Shenzhen-Zhongshan Corridor with high standards, high specifications and high quality, and plans to build 110 thousand volt Ascend and Binhai substations in Shenzhen and Zhongshan respectively to provide reliable electric power for the Shenzhen-Zhongshan Corridor with high-quality power supply services.
The staff of Guangdong Zhongshan Power Supply Bureau of China Southern Power Grid entered the Shenzhen-Zhongshan Channel to carry out the commissioning and acceptance of power facilities. Photo by Sun Jiabiao
The whole line is equipped with intelligent equipment
130 transformers escort "artifact"
The Shenzhen-Zhongshan Corridor is a cross-sea cluster project integrating "bridges, islands, tunnels and underwater interconnection", with a total length of about 24 kilometers. In the tunnel, a large number of intelligent facilities and equipment, such as intelligently adjustable full-color landscape light strips, 14 intelligent inspection robots, dual-wavelength flame detectors, and Beidou satellite signal mapping equipment, will escort safe and efficient travel in the near future.
In order to ensure the safe and comfortable driving environment of the Shenzhen-Zhongshan Corridor and the efficient emergency rescue of the whole line, the Shenzhen-Zhongshan Corridor is equipped with street lighting, full-coverage monitoring system, communication and fire-fighting facilities. "These protective electrical equipment has high requirements for power supply stability, and more than 130 transformers are distributed along the Shenzhen-Zhongshan Corridor to ensure the safety, stability and guarantee of electricity consumption of all equipment." Cheng Longjie, a business officer of the marketing department of China Southern Power Grid Guangdong Zhongshan Power Supply Bureau, said.
The staff of Zhongshan Power Supply Bureau of China Southern Power Grid carried out the electricity inspection of power equipment in the Shenzhen-Zhongshan Channel. Photo by Sun Jiabiao
"Air-ground integration" substation
Realize the "double insurance" of power supply
Walking into the 110 thousand volt coastal substation of Zhongshan Power Supply Bureau of China Southern Power Grid, you will have an unexpected encounter with the cute "big-eyed" robot, and the agile and flexible "little blue bird" drone will also pass over your head from time to time, and you can see the "fiery eye" camera and the "discerning" sensor everywhere. This is similar to the picture full of science and technology in a blockbuster movie, but it is actually the scene of the substation's daily "air-ground integration" intelligent joint inspection. It is reported that as early as 2021, China Southern Power Grid began to pay close attention to the construction process and electricity demand of the project. In accordance with the principle of "moderate advance and margin", Zhongshan Power Supply Bureau has "tailor-made" a 110 thousand volt coastal intelligent substation for it, and added six 10 thousand volt lines to meet the huge power demand brought about by the opening of the Shenzhen-Zhongshan Corridor.
China Southern Power Grid Guangdong Zhongshan Power Supply Bureau built a 110 thousand volt coastal intelligent substation. Photo by Ma Guanhua
"The Binhai project is the first power transmission and transformation project involving the laying and operation of cables in the comprehensive pipe gallery of Zhongshan Power Supply Bureau." Xu Daicheng, project manager of the project and supply chain service center of Zhongshan Power Supply Bureau, said that after the use of the underground comprehensive pipe gallery, it can effectively avoid repeated road excavation and facilitate future maintenance. In the process of project acceptance, the new technology of "automatic acceptance of telecontrol remote signaling" was first tried, and the new model of "machine generation" was realized, which was put into production one month earlier than planned.
In order to further improve the reliability of the power supply to the bridge, the newly commissioned Binhai Station and Ma'an Station are mutually reinforcing. When one line is disconnected, there is another line to ensure the continuity of power supply, and truly realize the "double insurance" of power supply.
On the eastern artificial island, the Shenzhen Power Supply Bureau of China Southern Power Grid has carried out the "first inspection" of the equipment and facilities of the 110,000-volt Ascend substation one month in advance. "We comprehensively check the health status of the main transformer and GIS equipment through various testing instruments and test methods, eliminate potential hidden dangers in time, and ensure the stable and reliable operation of the equipment." Shi Mingjin, director of the Xixiang Patrol Maintenance Center of the Second Substation Management Institute of the Shenzhen Power Supply Bureau of China Southern Power Grid, said.
In addition to on-site patrol and maintenance, relying on the full-station high-definition intelligent video system, temperature measurement system, high-speed intelligent private network, etc., the operation and maintenance personnel can grasp the operation status of the entire power supply system of the Shenzhong channel at any time with a mouse click in the monitoring center. When the system finds an abnormality, it will automatically give an alarm and provide early warning information to the operation and maintenance personnel in time.
Shenzhen-China Power Office "One Pass Permit"
High-quality service "electricity" brightens the Bay Area
In view of the problems of urgent power consumption in the Shenzhen-Zhongshan Corridor and the limitation of the available power points in the surrounding area, Zhongshan Power Supply Bureau has invested in the construction of an industrial expansion supporting project, extending the power supply to the red line of the Shenzhen-Zhongshan Channel Management Center, building a high-reliability intelligent 10,000-volt distribution switch station, and applying advanced quick-break intelligent distributed distribution automation technology to ensure that the fault recovery time reaches the millisecond level.
"We have joined hands with the Zhongshan Municipal Government to create a 'one-certificate pass' for Shenzhen-China power management, and set up a 'Shenzhen-China integrated power office' service area, where customers can apply for it in different places, handle it in different places, connect the fire in different places, and complete it in different places, and customers can run without running." Lai Qixuan, general manager of the marketing department of China Southern Power Grid Guangdong Zhongshan Power Supply Bureau, said.
Night view of the deep middle passage. Photo by Sun Jiabiao
In Shenzhen, enterprises and residents can handle electricity consumption in the Linshen area "without leaving the city". Shenzhen Bao'an Power Supply Bureau of China Southern Power Grid recently launched the "Bay Electricity Easy" service to promote "industry groups, cross-city electricity" and "number of electricity bills", and the Shenzhen-Zhongshan Channel Management Center then became the first batch of customers to enjoy the service, the center needs to change the settlement account, and print the special invoice for electricity VAT every month into the account management, Shenzhen Baoan Power Supply Bureau guides customers to apply for change of business in Zhongshan, and remotely signs the power supply contract through electronic signatures to complete the business handling, and the invoicing business is pushed to customers online in the form of digital electronic invoices. Exempt customers from the cost of traveling to and from Shenzhen and Zhongshan to handle business.
In the future, Shenzhen and Zhongshan will further expand the scope of "one-permit access" to create a benchmark for "access to electricity" in the national electricity business environment, and provide reliable power supply and high-quality services for the high-quality development of the Greater Bay Area.
Written by: New Express reporter Wang Tong correspondent Shen Dian Shen Dian Shen Dian