As an important part of the 500-kilovolt Chu-ting power transmission and transformation project, the 500-kilovolt Chu Ting cable tunnel under construction is about 19.3 kilometers long. It is planned to lay two 500-kilovolt Chutai-Guangnan station cable lines, About 20.1 km. The implementation of the 500 kilovolt Xanting power transmission project is of great significance to the Guangzhou power grid. Power Grid, Guangzhou Power Supply Bureau, said Lu Guocun, director of the construction of Chu Ting station, on the one hand to meet the regional load growth in central and southern Guangzhou needs to solve the 500 kV Kuangnan substation overload problem, on the other hand can strengthen the central and southern regions 220 thousand Volt grid structure, improve the central city power supply security and reliability.

It is understood that the central and southern regions of Guangzhou is the future of Guangzhou City, an important load growth area is expected in 2020 the maximum load will reach 5.2 million kilowatts. At present, the region has only one 500-kilovolt transformer substation - Guangnan station, unable to meet the rapid growth of load requirements. At the same time affected by extreme weather, once 500 kV wide South Station lost pressure, the central city will be a large area power outages.

In order to meet the load growth needs, effectively improve the power supply capacity of the central and southern power grid, the Southern Power Grid Guangzhou Power Supply Bureau invested about 1.9 billion yuan, the new 500 kV Chu Ting power transmission project. The project includes the Chu Ting substation project, cable line engineering, tunnel engineering and so on. "500 kilovolt Chu Ting power transmission project is progressing in an orderly manner, for the end of 2019 put into operation." The project manager Wu Yanwei said that the current station has completed the "three links", is expected to start construction in early November. The tunnel connects Chu Ting Station with Guangnan Station, about 19.3 km, and the tunnel diameter is about 3.5 meters. Up to 4 500 kV and 4 220 kV cables can be laid.

As the 7th 500 kV substation in Guangzhou, 500,000 volt Chu Ting station is located in Panyu District, Guangzhou City, is located at the junction of Guangfo, the current construction of two 1000 MVA main transformer, 2 500 kV outlet, 12 220 Kilovolt outlet, the final scale of six 1000 MVA main transformer, 6 back 500 kV outlet, 16 back 220 kV outlet. Its all put into operation, will become the central and southern Guangzhou one of the main power.