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Wanjiazhai part of the facilities engineering the transformation of the cable machine

Install hub 220kVGIS L / ZHANG Yong-sheng (China Water Resources and Hydropower Engineering hinder the fourth clever. Xining, 811800) T} D 77 Keywords high-voltage equipment installation GIS ten cj} ceremony combination of silicon electrical / circuit breaker isolation switch installation process Wanjiazhai Dam Du. Kylie Abstract Wanjiazhai Water 220kV high-voltage equipment, electrical appliances using sulfur hexafluoride closed group of units, a total of 19 ten intervals, the interval is currently the largest number of hydropower applications. The main equipment in the circuit breaker single pole, single fracture, vertical structure; the isolation switch and earthing switches are single pole Results dig and electric operation. GIS installation tasks all four games by the water (mechanical and electrical installation branch) and hydropower shared the sixth inning (in water four games mainly). The device during the installation process. The lessons of successful experiences at home and abroad, and prepare more fully, so progressing relatively smoothly; although some of the equipment found in the installation of manufacturing defects and problems. But through efforts in ensuring quality and quantity to complete the engineering tasks. For some of the equipment installation characteristics and processes, are available for reference to the relevant units. Wanjiazhai Water A 220kV high-voltage equipment using sulfur hexafluoride (SFs) enclosed electric, GIS total of 19 intervals, including 6 into the line, 6 outlet,[link widoczny dla zalogowanych], 4 ten protection, two bus coupler and a sub- interval. 3 back by high voltage cable outlet, 3 back to the bus by the high pressure pipe outlet. GIS is the main technical parameters: Rated voltage 220kV, maximum voltage 252kV, the amount of the fixed rate of 50Hz, rated current structural characteristics of major equipment 2000Al I. I circuit breaker circuit breakers single pole, single fracture, vertical structure and a single pressure, dual-jet,[link widoczny dla zalogowanych], the axial principle of simultaneous suction arc. Each of the three pole circuit breaker, each pole bodies with a pneumatic brake operating sub-units. All rooms share a set of air systems from each other 2 sets of spare air compressor and connecting pipe composition. I2 isolation switch and grounding switch disconnectors and earthing switches are single pole Results dig; operating three-phase joint rapid isolation and earthing switches with an electric spring mechanism, generally isolating switches and earthing switches with an electric actuator. 2 Installation 2. I Installation of Wanjiazhai Water GIS installation has the following characteristics: (1) Lee Shu hub GIS Wanjiazhai _ a total of 19 intervals, the interval is currently the largest number of hydropower applications. All GIS base using the entire interval of the Ministry of the overall arrival. The largest single re-election 17t, only with the switching station I sets 5t crane. The transport barrier in place by artificial (2) as a dual bus structure, docking to both docked two ten fracture, so the vertical deviation must be controlled with the center within the soil 2ram. In the installation to prevent error accumulation, according to a previous installation experience to ensure that the final size of each other remedies. (3) the installation of the device, the first ten intervals of 13 hydropower four games by the commitment. 6 months interval after the sixth inning by the water borne, but the Council is responsible for technical guidance from the four and for the responsible party. 2.2 Installation preparation for the installation of features, we have done a full pre-installation preparations. Mainly: (1) First dip workers organizations and technical personnel, familiar with the construction drawings, technical information and process planning, and construction of the main problems for a detailed study to develop a tight construction technology (2) in human resources, Long Yang was deployed in the butterfly, rock beaches, such as power plants installed Lijiaxia OlS the crack formed and capable team. (3) learn the advanced experience of foreign GIS installed in strict accordance with installation program implementation,[link widoczny dla zalogowanych], so that someone full-time, special work time, by volume, then need to complete the installation process {and strictly enforce regulations to ensure the quality of the installation date and duration of closing your samples: 19,981,217 by the Office of the universal joint analysis to calculate the force that is due to the universal joint used for a rigid connection, the transmission of different heart, by the axial force and increase in intensity by the lack of impact load is broken, the right the department has been transformed. Selected with the expansion joints of the drive shaft, completely solved the Department failure. 4 Conclusion cable machine through the transformation, the operation greatly improved speed-based performance to meet the design requirements of Feng and improve the operability of the cable machine and to increase life expectancy rope 4 to 5 times longer, 4-step cable machine to spend a year Steel cost over 100 million, bearing codes can spend less cost of about 200 million, by the transformation of the previous month pouring concrete 4 5 million m, increased to pouring concrete on modified up to 7 ~ 80 000 m. To ensure that the Wanjiazhai progress,[link widoczny dla zalogowanych], for the water to win the honor four Board 4 cable machine even after multiple transformation,[link widoczny dla zalogowanych], but there are still many problems, such as code quality and life commitments have not been completely radical, tower run institutions not the platform design rationale. These issues will continue in operation transformation, in order to improve the productivity of the cable machine.