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...

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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...

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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.

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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...

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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...

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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...

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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...

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UHV power grids are like highways for electricity, and are one of the seven major areas of new infrastructure. On March 30, the Hubei Section project of the ± 800 kV UHV DC project from northern Shaanxi to Hubei (hereinafter referred to as the Shaanxi-East UHV Project) officially started. This is the first major energy project started in Hubei Province with the pace of resuming production. It is planned to be completed and put into operation next year. In the Xinzhou District of Wuhan, the Wuhan converter station of the UHV project under construction in...

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Silicone rubber insulators are also considered composite insulators or polymer insulators. The glass fiber rod is one of the important parts of the glass fiber rod. Its name is made of glass fiber material, which is used as the supporting core of the silicone rubber insulator. The glass fiber rod is composed of dozens of glass fiber threads, which makes it able to withstand high tensile loads in the vertical direction. This is also the reason for choosing the fiberglass rod as the support for the composite insulator core, especially on the tensile insulators and suspension insulators on...

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insulator core rod is made of epoxy resin and glass fiber main raw materials plus other additives through drawing, and has been widely used in China. In China, it was developed for the continuous rise of the voltage level of composite insulators and the continuous progress of technology. The early ordinary rods were lacking in high temperature resistance. They had caused brittle fractures and other malignant accidents during the operation of the line. Therefore, with the accumulation of on-site applications, the production process of rods has been continuously improved, and new rods such as high temperature...

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