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During the trial operation, the unit has a safe and stable operation with a maximum load of 400MW under the current head. The monitoring data shows that the temperature of the upper and lower guides and the thrust bearing of the unit and the vibration and swing of each part are within the excellent range of the national standard, and the electrical equipment is running. reliable. At present, the cumulative power generation of the unit has reached 65 million kWh.
Longtan Hydropower Engineering has set a precedent for the electromechanical installation of the highest water head and 700,000 kW underground powerhouse in China. The Group's Hydropower Seventh Bureau Longtan Electromechanical Installation Project Department, which is responsible for the installation of Longtan No.1~4, adheres to the enterprise tenet of "pursuing excellence, creating quality products and providing first-class service", taking science and technology innovation as the guide, scientific organization and careful construction. Successfully completed the installation and commissioning of the world's first 700MW full air-cooled hydro-generator unit, the largest three-phase combined transformer, 500 kV GIS switch station, etc., and created a new record for the installation and commissioning of the same scale units in China. It has become another model in the history of hydropower construction and has provided valuable experience for the installation of the same type of units in the future. "National hydroelectricity experts jointly tested the installation results of the Longtan project. The results show that the installation quality of the first hydro-generator unit of Longtan Project is at the leading level in China," Fu Yuanchu, a consultant of China Hydropower Construction Group Co., Ltd. and a famous hydroelectric power expert. Very high evaluation.
At present, Longtan No. 1 will reasonably determine the operation mode of the unit according to the stable operation requirements of the unit, the head change and the unit operating conditions. It is planned to be put into commercial operation in June.
According to reports, before the 72-hour test run of the unit, water-filling commissioning and grid-connected commissioning have been carried out. The 72-hour trial run is a very important comprehensive test before entering the official power generation. The working state is the same as the official power generation, which is used to test the system unit. Whether it is safe and reliable, can it operate normally for a long time in the case of grid connection with the grid. After 72 hours of trial operation, it will be transferred to the operation management of the power plant.
Longtan Hydropower Project is the leading backbone control project for the cascade development of Hongshui River in China. It is one of the ten landmark projects of the country's western development and one of the strategic projects of "West-to-East Power Transmission". It is known as the "rich mine in hydropower rich ore." ". Longtan Hydropower Station designed and installed 9 sets of 700,000 kilowatt units with a total capacity of 6.3 million kilowatts. The project started in July 2001 and is scheduled to be completed by the end of 2009.
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