Telescopic tube bus for substation
A telescopic tube and substation technology, which is applied in the installation of busbars, fully enclosed busbar devices, busbar/line layout, etc., can solve the problems of limited installation and use range, limited shock absorption capacity, and large influence of substation electromagnetic field, etc., to increase electrical stability No influence on performance and electrical performance, and the effect of improving the sliding range
Active Publication Date: 2021-08-31
CENT SOUTH UNIV
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Problems solved by technology
Due to the size limitation of electrical equipment and its equalizing ring, the slip range of damping fittings is usually small, resulting in limited shock absorption capacity
In addition, the shape of damping fittings is complex, which has a great impact on the electromagnetic field of the substation, and its installation and use range is greatly limited.
Since the busbar is completely nested in the damping fittings, it is necessary to completely pull out the busbar to replace the fitting during the power outage maintenance after the earthquake, and a busbar is often connected to multiple electrical devices. When it is completely pulled out and reinstalled , the large amount of maintenance and commissioning work prolongs the power outage time after the earthquake
Method used
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Embodiment 2
[0047] Preferred embodiment 2. The difference between this embodiment and preferred embodiment 1 is that the pipe bus connecting two electrical devices is divided into three sections, and the connection form of large-diameter bus-small-diameter bus-large-diameter bus is adopted. Both connection points are connected via telescopic joints. Increase the energy dissipation effect of the pipe busbar.
[0048] Compared with the prior art, the present invention has the following advantages:
[0049] (1) The expansion joint of the pipe busbar is arranged in the middle of the pipe busbar. Compared with the previous devices that rely on fittings to slide and consume energy, the present invention does not need to be placed in the protection range of the pressure equalizing ring, and can have a large sliding stroke and energy consumption effect more obvious advantages. In addition, since the expansion and contraction occurs on the pipe bus, the disturbance to the electrical equipment is...
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The invention discloses a telescopic pipe busbar for a substation, which comprises a large-diameter busbar, a small-diameter busbar and an expansion joint. The end of the small-diameter busbar is inserted into the large-diameter busbar and connected through an expansion joint; , sliding shaft, damper and small-diameter end plate, the large-diameter end plate is detachably connected to the large-diameter busbar, one end of the fixed sleeve is open and the other end is closed, the fixed sleeve includes a one-way sliding section and a two-way sliding section, and one-way sliding The sliding section is arranged inwardly from the opening end, the fixed sleeve is coaxially arranged in the large-diameter busbar, the one-way sliding section is connected with the large-diameter end plate, and the inner end of the sliding shaft passes through the closed end of the fixed sleeve and is coaxially arranged in the two-way The inner and outer ends of the sliding section are connected to the small-diameter end plate through a damper, and the small-diameter end plate is detachably connected to the small-diameter busbar. The entire telescopic length can be regulated by the length of the fixed sleeve, which is beneficial to increase the sliding range and make it have better shock resistance; and the telescopic only occurs on the busbar, which has less disturbance to electrical equipment.
Description
technical field [0001] The invention belongs to the technical field of anti-seismic technology for substation equipment, in particular to a telescopic pipe busbar for a substation. Background technique [0002] The high-voltage substation is a key node in the power grid, and the electrical equipment and its electrical circuits in the substation have high earthquake vulnerability. The interruption of the power system can easily lead to cascading failures among urban public utility systems such as water supply and communication, resulting in huge direct and indirect economic losses. In addition, the interruption of the power system also has a negative impact on earthquake relief and post-disaster reconstruction work. [0003] At present, seismic isolation measures are taken for electrical equipment to reduce its seismic response, protect expensive electrical equipment, and improve the seismic reliability of power systems. However, the seismic displacement response of electri...
Claims
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IPC IPC(8): H02B1/20H02G5/00H02G5/06
CPCH02B1/20H02G5/00H02G5/061
Inventor 何畅叶旭琛蒋丽忠
Owner CENT SOUTH UNIV