The world's first UHV GIL pipeline gallery completed the first comprehensive "physical examination" since the project was put into operation, which effectively guaranteed the safety of energy supply in East China during the peak electricity consumption period this summer, and better promoted the integrated development of the Yangtze River Delta. The Sutong GIL integrated pipeline corridor project, known as the "first corridor of the Yangtze River in thousands of miles", is an ultra-long distance submarine GIL power transmission project with the highest voltage level, the largest transmission capacity, and the highest technical level in the world. As the...

Continue reading

We promoted development through technological innovation, improved efficiency to reduce costs, and overcome difficulties to prove our strength. On July 7, the group held the 2019 Technology Innovation and Production Efficiency Improvement Award Conference, in which 3 sister companies, 4 innovation projects, 3 patents and 55 outstanding employees were honored. Wu Yamin, chairman of the group, Li Lei, chairman assistant, and all the team leader from production lines attended the meeting. Chairman Wu gave important speech on this conference. He pointed that the year 2020 has been an unusual year. The pandemic...

Continue reading

The insulator is usually made of silicone rubber material. The surface of the core rod purchased is relatively smooth. In order to ensure the durability of the interface between the insulator core rod and the housing during the manufacture of the insulator, the surface of the core rod needs to be sanded. Roughen the surface film of the core rod to increase the surface reactivity and facilitate bonding with the adhesive.

Continue reading

The glass transition temperature is the temperature obtained from a transition point of the polymer material from the glass state to the rubber state. It only represents a point, only that the intensity is stable before this temperature, but it does not mean that it will not work or exceed this temperature intensity. Thermal stability refers to how long the polymer material can work at a certain temperature and the strength cannot be reduced to a certain limit, so it refers to the thermal stability at this temperature. To give an example: the glass transition...

Continue reading

The new coronary pneumonia epidemic has had a certain impact on China's economic development, especially on the supply side due to delayed corporate resumption. From January to February, the cumulative value added of industry decreased by 13.5% year-on-year, the total investment of fixed assets decreased by 24.5% year-on-year, and the total retail sales of social consumer goods fell by 20.5% year-on-year. In this context, it is now a hot topic to do a good job in epidemic prevention and control while promoting enterprises to resume work as soon as possible. State Grid Co., Ltd., as...

Continue reading

From January to April, the electricity consumption of the whole society decreased year-on-year, and the electricity consumption of the month achieved a positive growth for the first time in the year; the cumulative decline in electricity consumption in industry and manufacturing continued to narrow, and the electricity consumption in the month changed from negative to positive; The energy consumption industry has achieved positive growth in electricity consumption in the month; the installed power generation capacity has grown steadily, and the electricity generation in the month has increased; except for solar power generation, the utilization hours of other types...

Continue reading

On the afternoon of April 18, as three tractors pulled 6 silver lines slowly across the mountain range of Shijiao Town, Fogang, Qingyuan City, Guangdong Province, and reached the B161 tower, the 19th and 20th bids of the Kunliu-Long DC project line passed smoothly. Kunliulong DC is the world's first UHV multi-terminal flexible DC transmission project constructed by China Southern Power Grid. The project realizes the distribution of Yunnan clean hydropower to Guangdong and Guangxi, with an annual power transmission of more than 3.2 million kWh. The project has a length of 281 kilometers in...

Continue reading