Arrangement method of outgoing line of hydropower station behind dam

Abstract

The invention discloses a method for arranging outgoing lines of a hydropower station at dam toe. A three-dimensional space between the main workshop and the auxiliary workshop of a hydropower stationbuilding and a dam body is utilizes, a main transformer is arranged on the ground space of the above-mentioned three-dimensional space and overhead wires are arranged in the upper space; the roof ofthe auxiliary workshop is provided with an outgoing line disconnecting switch and an outgoing line arrester; a door-type outlet frame is arranged on the roof of a common structural column at the junction of the main workshop and the auxiliary workshop. The outgoing line arrangement of the hydropower station is completed according to the requirements of the electrical equipment connection sequenceselected in a designed electrical wiring diagram. The method has the advantages of ensuring clear layout of outgoing lines of the hydropower station, little investment in power station construction, small floor space, and convenient operation and maintenance management under the premise of ensuring reliable electrical operation.

Description

Technical field [0001] The invention relates to the field of hydropower station construction, in particular to a method for arranging outgoing lines of a dam-type hydropower station. Background technique [0002] At present, the construction of hydropower stations mostly adopts the post-dam layout method, which is determined according to the geology, topography and dam type of the area where the dam site of the water conservancy and hydropower project is located. The distance between the powerhouse building and the dam may be long or short. Under the condition that the powerhouse building and the dam are relatively spacious, there is no difficulty in the layout of the outlet site of the hydropower station. When the distance between the powerhouse building and the dam is close, the outlet site of the hydropower station cannot be arranged. The current existing technical solution is usually to choose the outlet site near the hydropower station to arrange the electrical equipment and...

AI Technical Summary

Problems solved by technology

[0003] 1. Since the conditions for laying out the outlet field near the factory building are often poor, the investment in excavation, filling and traffic road construction is large;

[0004] 2. The hydropower station passes the cable conductor to the outlet field. The cable purchase cost is high, the excavation of the cable trench is large, and the reliability of the cable transmission operation is not as high as that of the overhead conductor. When the cable fails, it is not intuitive to determine the fault location. Troubleshooting with the help of fault instrumentation equipment, and cable troubleshooting compared with overhead wires, the repair time is longer;

[0005] 3. The outlet site for hydropower station construction will face new land acquisition, excavation of hillsides, and leveling of the site, resulting in damage to the environment and ecology

[0006] 4. After the hydropower station is completed and put into operation, the inspection and maintenance scope of the on-duty personnel includes the equipment in the outlet field. The inspection and maintenance personnel need to climb and descend on the mountain road. The inspection range is large, and even special vehicles are required. The inspection and maintenance personnel have high labor intensity

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