The five employees of State Grid Cangzhou Power Supply Company are installing intelligent switches for the 10 kV Tonglian 5036 line of Cangzhou City.
Quzhou City is one of the key tea-producing areas in the country. Tea is an important source of income for the mountainous people in the city. According to incomplete statistics, there are currently more than 100,000 electric tea machines with an installed power of more than 300,000 kilowatts. With the wide application of tea machines, the power load and power consumption of the tea-producing areas in Ganzhou City have increased sharply during the spring tea season, and power failures caused by power overload have also occurred. By installing intelligent switches, it can improve the grid's sensing ability, timely feedback the line fault information, shorten the fault diagnosis and repair time, control the power-off range to the minimum area, shorten the power-off time, and improve the power repair efficiency.
After seeing the benefits of the smart switch, the tea farmer Huang Shengmiao, who is picking this year’s head tea spring, heard a happy smile on his face: “The electric power master said that after the power outage in the neighboring village, it will not affect the village. The repair time will also be faster. The price of tea is one day, as long as there is no power outage and less power outage, this year's tea will definitely sell for a good price."
From the implementation of village-level transformer capacity increase, line transformation, substation capacity expansion and other power grid construction and reconstruction projects to the Cangzhou tea area, to the application of intelligent public change monitoring, electricity information collection system and other technical means, real-time monitoring, analysis of lines and public changes Load and its operation, and use this as a basis to cut off the relevant line and substation load; in addition, in recent years, the relevant 10 kV line is equipped with automatic voltage regulator, reactive power compensation device and intelligent switch. A smart grid with optimized structure, reasonable layout, safe and reliable is increasingly powerful and perfect.
On the basis of the continuous construction and transformation of the distribution network in the tea area, the total investment of Zhangzhou Company in 2017 was about 7 million yuan, and the installation of 10 sets of 10 kV lines, 2 sets of low-pressure distributed pressure regulating devices, and reactive power compensation devices 300 were completed. In order to speed up the construction of intelligent distribution network in 2018, Zhangzhou Company plans to invest 26.42 million yuan, install 150 sets of intelligent switches, 24 sets of three remote DTUs, 50 sets of monitoring terminals for opening and closing, and 1200 sets of fault indicators. Improve the power supply capacity, power supply quality and power supply reliability of the distribution network in the tea area, and use the smart grid to protect the tea consumption of tea farmers in the city.
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