500kv open type high-voltage distribution device with uniline arranged one-and-half breaker

Abstract

The invention discloses a 500kV open type high-voltage distribution device with a uniline arranged one-and-half breaker. Each string comprises two sets of bus bars, three breakers, a pillar insulator, a current transformer and an isolating switch, wherein the pillar insulator, the current transformer and the isolating switch are matched with the three breakers, each bus bar is a flexible conductor which is connected in series to a bus bar framework through a tension insulator, a wire inlet framework and a wire outlet framework are respectively arranged at the outer side of the bus bar framework, each breaker in each string is respectively connected with the pillar insulator, the current transformer and the isolating switch, each breaker, the pillar insulator, the current transformer and the isolating switch in each string occupy one interval and are respectively vertical to the two sets of bus bars, and the bus bar framework comprises a bus rod framework at the upper layer and a transition bus bar framework at the lower layer. The invention has the advantages that the high-voltage distribution device has smaller longitudinal size and larger transverse size and is suitable for using when the longitudinal size before an A row of a large scale unit is limited, but the transverse size does not have other limitations.

Description

technical field [0001] The invention relates to a high-voltage power distribution device, in particular to a 500KV open-type high-voltage power distribution device in which one and a half circuit breakers are arranged in a single row for the main wiring. Background technique [0002] In the prior art, there are the following requirements for electrical main wiring: [0003] According to Article 13.2.13 of "Technical Regulations for Design of Thermal Power Plants", the wiring of 330~500kV power distribution devices must meet the requirements of system stability and reliability, and at the same time, the flexibility of operation and the economy of construction should also be considered. The number of incoming and outgoing lines is 6 or more, and when the power distribution device plays an important role in the system, one and a half circuit breakers should be used for wiring. In the wiring of one and a half circuit breakers, the power line should be paired with the load line ...

AI Technical Summary

Problems solved by technology

[0016] In recent years, as the design technology of large-capacity units has become more and more mature, in many cases, the distance between the two main transformers is larger than that of the previous medium-sized units. For example, the distance between the two main transformers of 600MW is about 90m, and the distance between The distance between the two main transformers is about 110m, and sometimes there are cooling towers arranged in front of column A, etc., it is necessary to increase the distance between the incoming line of the main transformer (or the incoming line of the standby transformer) on the power distribution device side; in addition, there are Some projects are limited by the general layout, and require the longitudinal dimension of the power distribution device to be compressed. At this time, the layout of the above three power distribution devices can no longer meet the requirements of the matching degree of the incoming line corridor and the requirements of the longitudinal dimension. The distance between the incoming line intervals of the device is increased, that is, the horizontal size of the power distribution device is increased, and the vertical size is compressed

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