High-voltage large-capacity vibration-resistant transformer arranged on draft tube deck of hydropower station and design method thereof

Abstract

The invention relates to the technical field of transformers, in particular to a high-voltage large-capacity vibration-resistant transformer arranged on a draft tube deck of a hydropower station and adesign method thereof. The design method comprises the following steps of: firstly, measuring and analyzing the vibration characteristics of the draft tube deck of the hydropower station, carrying out vibration characteristic analysis on the initially arranged transformer modeling, and comparing the vibration characteristics of the draft tube deck and the transformer, wherein, on one hand, the resonance problem is avoided, on the other hand, the response of the transformer to the vibration of the draft tube deck is analyzed, the structural vibration resistance reinforcement is carried out onthe transformer, and the reliable operation of the transformer is ensured. In addition, an on-line monitoring system of the transformer monitors the running condition of the transformer in real time,thereby further ensuring the reliability.

Description

technical field [0001] The invention relates to the technical field of transformers, in particular to a high-voltage and large-capacity anti-vibration transformer installed on a tail water platform of a hydropower station and a design method thereof. Background technique [0002] In the past, most large-scale hydropower stations installed transformers on the shore base, while the generator sets of the transformers were installed on the tail water platform of the dam. The transformer on the tail water platform is connected to the generator set on the tail water platform. The busbar corridor occupies a large area in this arrangement, and a large amount of civil investment and construction costs will be invested. Moreover, the connection methods between various electrical equipment are complicated, and the cost of connecting busbar materials and The load loss of the long-term operation of the power station is relatively large. In view of this problem, if the transformer is als...

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Problems solved by technology

[0002] In the past, most large-scale hydropower stations installed transformers on the shore base, while the generator sets of the transformers were installed on the tail water platform of the dam. The transformer on the tail water platform is connected to the generator set on the tail water platform. The busbar corridor occupies a large area in this arrangement, and a large amount of civil investment and construction costs will be invested. Moreover, the connection methods between various electrical equipment are complicated, and the cost of connecting busbar materials and The long-term operation of the power station has a large load loss

In view of this problem, if the transformer is also installed on the tailwater platform so that the distance between the transformer and the generator set is close, it will greatly save civil engineering, cable connection length and load loss. However, due to the large vibration of the tailwater platform, conventionally designed transformer installation Due to the continuous vibration on the tail water platform, safe and reliable operation cannot be guaranteed. At this time, it is necessary to design an anti-vibration transformer for installation on the tail water platform of the hydropower station

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