◆  40 years of Shanghai's reform and opening up

"History always gives people the power to learn wisdom and move forward in some special years."

2018 is such a special year.

In 2018, Shanghai positioned itself as a "remarkable global city" and led the world-class urban agglomeration of the Yangtze River Delta. As a pioneer in the new era, Shanghai has sounded the horn of high-quality development.

In 2018, the State Grid Shanghai Electric Power Co. Ltd. put forward to build the world-class city energy Internet as the "energy engine" for Shanghai to upgrade its energy level and enhance its economic density.

Comparing a set of data of Shanghai main power grid in 1978 and 2008, we can feel the tremendous changes brought by reform and opening up to the outside world to Shanghai's social and economic development, especially to the development of electric power.

The highest voltage level of Shanghai power grid was raised from 220 kV in 1978 to 1 000 kV in 2018; the number of 220 kV and above substations increased from 8 in 1978 to 135 in 2018; the corresponding transformer capacity increased from 1.38 million kVA to 1.14 million kVA; the total length of 220 kV and above transmission lines increased from 511 km in 1978 to 20 km in 2018. 18 years of 5892 kilometers, of which the cable line is increased from 6.9 km to 867 km. Nowadays, Shanghai power grid has become the most advanced AC/DC hybrid power grid in China, forming a transmission pattern with the backbone of "five-AC-four-direct" UHV, inter-regional power grid and 500 kV double-loop network. The optimal allocation of power grid resources, security control capacity, operation and maintenance management average reach the world first. Enter the level.

In 1882, China's first light was lit in Shanghai. However, the real development and leap of Shanghai power grid is brought about by reform and opening up.

Over the past 40 years, Shanghai Power Grid has created countless "No. 1 in China" and has also become a first-class and world-leading urban power grid. Today let's look back on some of these "first" to embrace a broader and better future.