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Selection and layout method of double-span suspended tubular bus in substation

A technology for spanning tubular and tubular busbars. It is applied in busbar/line layout, busbar installation, electrical components, etc. It can solve problems such as not meeting stress and deflection requirements, affecting the reliable connection of electrical equipment, and busbar bending.

Active Publication Date: 2016-08-17
SHANDONG ELECTRIC POWER ENG CONSULTING INST CORP
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Problems solved by technology

However, for substations with large spans of suspended tubular busbars, changes in concentrated load positions, and small busbar carrying capacity, especially for foreign projects, if the tubular busbar type selection and reasonable construction are not carried out through systematic and comprehensive calculations, the adopted tubular type The busbar is likely to fail to meet the stress and deflection requirements under certain working conditions. The consequences may cause the busbar to bend and affect the reliable connection of electrical equipment; Hidden dangers

Method used

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  • Selection and layout method of double-span suspended tubular bus in substation
  • Selection and layout method of double-span suspended tubular bus in substation
  • Selection and layout method of double-span suspended tubular bus in substation

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Embodiment Construction

[0113] Below in conjunction with accompanying drawing and embodiment, the present invention will be further described:

[0114] As shown in Figure 1(a), this figure mainly shows the stress situation of the suspended tubular busbar under concentrated load. In the figure, W and P are concentrated load points, V 1 ,V 2 ,V 3 ,V 4 It is the vertical lifting force of the insulator string suspending the busbar. Under the action of W and P, the suspended pipe bus will generate the bending moment of the mid-span section, the section bending moment at the lifting point and the vertical lifting force, which can be calculated from the vertical lifting force. The pull force of the parent tube is ready for calculating the parent stress of the tube.

[0115] As shown in Figure 1(b), this figure mainly shows the stress situation of the suspended tubular busbar under the action of earthquake. F in the picture 1 , F 2 , F 3 , F 4 , F 5 is the seismic force, and according to the princi...

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Abstract

The invention discloses a type selection and arrangement method for a double-span suspended tubular busbar in a substation, which includes: initially setting the span and phase spacing of the tubular busbar; selecting a certain type of busbar; determining the selection of basic factors under various working conditions value; respectively calculate the stress of the tubular busbar under the action of self-weight and maximum wind speed, self-weight and icing, short-circuit and earthquake; judge whether the stress of the tubular busbar calculated in each of the above cases is less than the maximum stress of the tubular busbar Allowable stress; calculate the deflection of the tubular busbar; judge whether the deflection of the tubular busbar is less than the set value. Beneficial effects of the present invention: the influence of different meteorological conditions on the tubular busbar is fully considered, the rational integration of electricity and mechanics is realized, and the disadvantages of selecting double-span suspended tubular busbars only relying on electrical theory or experience in actual engineering are overcome. The error caused by human factors is reduced to ensure the normal operation of the substation.

Description

technical field [0001] The invention relates to a method for selecting and arranging a double-span suspension tubular busbar of a substation. Background technique [0002] In the layout design of substations, the tubular busbar scheme is the mainstream in the outdoor layout scheme, and there are various layout methods. The layout forms of the tubular busbar are mainly divided into supporting tubular busbars and suspension tubular busbars. Among them, the selection of supporting tubular busbars However, the selection method of suspended tubular busbar is basically at a blank stage, there is no perfect selection process and calculation system, and there is no solution in "Electrical Design Manual of Power Engineering" and related books and journal papers. [0003] Suspended tubular busbars are mostly used in substations with voltage levels of 500kV and higher. The selection is mainly based on busbar current carrying capacity and engineering experience. Due to the conventional ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02G5/00H02B1/20
Inventor 李颖瑾赵玉星王军飞于玉铭李波张宇黄萍邹振宇王涛芦海波郭进呼文强
Owner SHANDONG ELECTRIC POWER ENG CONSULTING INST CORP
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