Gas-insulated switchgear device
A gas-insulated switch and switchgear technology, which is applied in the direction of switchgear, switchgear setting, switchgear with metal casing, etc., can solve problems such as a large number of components, increasing the overall size of the substation, and separation of structure and function
Active Publication Date: 2010-06-02
HITACHI ENERGY SWITZERLAND AG
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Problems solved by technology
[0003] According to more traditional solutions, substations are realized by using a plurality of components that are structurally independent and that, when assembled, are suitably interconnected and connected to the power lines in order to obtain the required layout and each perform a corresponding dedicated function; in practice These traditional solutions in application present some disadvantages, mainly due to the large number of components required to provide even the smallest construction, and also due to their structural and functional separation
In fact, these aspects lead to substantial maintenance requirements for each and any single component used and to significantly increase the overall size of the substation, thereby negatively affecting installation and maintenance costs, as well as environmental impact
Method used
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[0015] Referring to the above figures, the high-voltage or medium-voltage gas-insulated switchgear according to the present invention includes a first fixed housing 1, and the fixed housing 1 is partially or completely filled with an electrically insulating gas, such as SF 6 , and in the illustrated embodiment the stationary housing 1 has a pod-shaped portion 2 and one or more sleeves mechanically mounted on the pod-shaped portion 2 . Each bushing contains a corresponding electrical terminal or bus bar for the input / output connection of the switchgear to the power line and / or to other components such as transformers, loads, etc.; figure 1 Only two bushings 3 and 4 in which two corresponding terminals 5 and 6 are respectively housed are shown in FIG. Such as Figure 4 As schematically shown in , the housing 1 preferably includes a third bushing 7 housing a corresponding third terminal 70 .
[0016] The switching device according to the invention also includes a disconnector u...
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A gas-insulated switchgear device comprising a first casing housing: at least a first terminal; a disconnector unit; a circuit breaker unit; actuating means; a second casing operatively coupled with said actuating means, which houses said interruption contacts and on the outer surface of which at least said first movable contact is mounted; characterized in that said second casing is pivotally mounted inside said first casing so as to rotate said first movable contact during operation of said disconnector unit, said couple of interruption contacts being operatively coupled to said actuating means so as to be kept electrically coupled in said circuit breaker closed position and substantially still relative to each other during rotation of said second casing.
Description
technical field [0001] The invention relates to a gas insulated switchgear for high or medium voltage applications, ie for voltage applications above 1000V. Background technique [0002] It is known in the art to have a plurality of substations along the grid lines for the transmission and distribution of power from the generation sources to the loads and consumers connected to the supply grid; these substations can be constructed in different layouts depending on the application, e.g. T-shaped layout, H-shaped layout, etc., and realized by using a series of electrical components, such as disconnectors, circuit breakers, instrument transformers, control systems, etc. [0003] According to more traditional solutions, substations are realized by using a plurality of components that are structurally independent and that, when assembled, are suitably interconnected and connected to the power lines in order to obtain the required layout and each perform a corresponding dedicated ...
Claims
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IPC IPC(8): H02B13/035H02B13/045H02B13/02H01H33/42H01H33/64H02B13/025
CPCH02B13/035
Inventor R·卡梅罗尼L·斯丰德里尼V·加吉奥尼
Owner HITACHI ENERGY SWITZERLAND AG