Chongqing to invest 5.7 billion yuan to build grid DC resistance tester

Chongqing will invest 5.7 billion yuan to build a strong grid DC resistance tester for the Liangjiang New Area and the scale of the original regional construction during the “Eleventh Five-Year Plan” period. Investment will increase by 127%, the number of substations will increase by 61%, and the capacity of the main transformer will increase by 75%.

On September 29, the 220-kilovolt Zhuzhu substation was formally put into operation. The DC high voltage generator is the first new power infrastructure project that was operated after the establishment of Chongqing Liangjiang New District. During the “Twelfth Five-Year Plan” period, the national power grid Chongqing Power will re-invest 5.7 billion yuan to build a strong grid in the Liangjiang New Area.

The Liangjiang New District is located in the north of the Yangtze River and the east of the Jialing River in the main city of Chongqing. The DC high voltage generators include Jiangbei District, Yubei District and Beibei District. The planned area covers 1200 square kilometers, of which 550 square kilometers can be developed and constructed. , is China's third-level new district after Shanghai's Pudong New Area and Tianjin Binhai New Area.

Under the many favorable policies, this is becoming another growth pole in the economic development of the western part of China. DC high-voltage generators provide reliable support for the rapid development here. The national power grid Chongqing Electric Power Co., Ltd. has compiled the "Chongqing Liangjiang New Area Power Grid Development Plan". During the "12th Five-Year Plan" period, it plans to invest 5.7 billion yuan in new (expanding) substations. 36 seats, the new main transformer capacity of about 10 million kVA.

The newly completed 220-kilovolt substation is located in the fish mouth group of the eastern city of Chongqing in the Liangjiang New District. The DC high-voltage generator is the comprehensive multi-functional industrial new city with the most favorable conditions for the northward movement of the main city of Chongqing. Prior to the DC high voltage generator, there was only one 35 kV substation in the fish head group, and there was a 220 kV boundary Shibao substation (360000 kVA) near the group. In 2009, the maximum load exceeded 300,000 kw, and the load capacity ratio was insufficient. 1.2.

It is understood that since 2006, the national power grid Chongqing Power has invested 2.51 billion yuan in the area of ​​Liangjiang New Area, and has built a 500 kV substation, 4 DC high voltage generators for 220 kV substations and 13 110 kV substations. The capacity has increased by nearly 1 million kilowatts, forming a grid pattern with 500 kilovolts as a support, 220 kilovolts as the main grid, and coordinated development of power grids at all levels, which has effectively boosted the rapid economic development of the area.

A total investment of 196 million yuan in the Pearl substation, the current capacity of 480,000 kVA, DC 220 kV high voltage generator in and out of four lines, the final capacity of 720,000 kVA, 220 kV in and out of the line 6 times The maximum load will reach 400,000 to 500,000 kilowatts, which will greatly satisfy the economic development needs of the eastern part of the Liangjiang New Area in the future.