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Burst busbar handling problem_How to prevent explosion of Guangzhou busway
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[Abstract]:
In the substation, the connection of voltage distribution devices at various levels, and the connection of electrical equipment such as transformers and corresponding power distribution devices, mostly use bare wires or strands of rectangular or circular cross section, which are collectively referred to as bus bars. The role of the busbar is to collect, distribute and transmit electrical energy. Since the busbar is in operation, there is a huge amount of electric energy passing through, and when it is short-circuited, it is subjected to a large heat and electrodynamic effect. Therefore, the busbar material, cross-sectional shape and cross-sectional area must be reasonably selected to meet the requirements of safe and economic operation.
The busbars are divided into hard busbars and soft busbars according to the structure. The hard busbar is further divided into a rectangular bus bar and a tubular bus bar.
The rectangular busbar is generally used in the main transformer to the power distribution room. The advantage is that the construction and installation are convenient, the change in operation is small, the current carrying capacity is large, but the cost is high.
The soft busbar is used outdoors, because the space is large, the wire is swung and the distance between the wires is not enough. The soft busbar is simple to construct and low in cost.
In recent years, in the design of a substation, a bus bar made of an aluminum alloy material is used for a bus bar of 35 kV or more. This busbar structure can reduce the distance between the busbars. The knot is clear and the maintenance is small, but the busbar fixture is more complicated.
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