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Ship double-bus clamp optimal fixing position determining method

A technology for fixing the position and determining the method, which is applied in special data processing applications, instruments, electrical digital data processing, etc. It can solve the deformation of busbars and busbar clamps, affect the stable operation of the power system of the busbar system, and cannot add insulator support points, etc. question

Inactive Publication Date: 2014-10-08
NAVAL UNIV OF ENG PLA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the insulator support point cannot be added between the two insulators of the busbar due to the limited space structure of the ship hull and the aircraft, only the busbar clamp can be used instead.
Bus bars and bus bar clamps will be deformed due to the influence of huge force effects, which will affect the stable operation of the entire bus bar system and even the entire power system

Method used

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  • Ship double-bus clamp optimal fixing position determining method
  • Ship double-bus clamp optimal fixing position determining method
  • Ship double-bus clamp optimal fixing position determining method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Embodiment 1: suppose l 1 +l 2 +l 3 =l=1(m), q=1(N / m), the maximum bending moment curve of the busbar can be drawn. Each solid curve is different l 1 The maximum bending moment on the busbar varies with l 3 The law of value change, the dotted curve is the change law of the maximum bending moment when the two bus clamps overlap, and each solid point on the dotted curve is the intersection point of the solid curve group and the dotted curve, obeying the following relationship:

[0039] when 1 2 ≤ l 3 1 hour, f ( l 3 ) = 1 8 l 3 2 - - - ( 14 )

[0040] when 1 2 ...

Embodiment 2

[0052] Example 2: When the single bus bar clamp works

[0053] If the busbar clamps B and C overlap, it can be approximated as a fixing effect, and the bending moment value at this place obeys the relational expression:

[0054] M = q l 1 2 / 8 ( l / 2 ≤ l 1 l ) - - - ( 17 a )

[0055] M = ...

Embodiment 3

[0059] Example 3: When the double busbar clamp works

[0060] If the busbar clamps B and C do not overlap, it is the constraint effect of the double busbar clamps. Because of the equivalence between the positions of B and C, only 01 3 <l / 2 range for analysis. The selection criterion is also to make the maximum bending moment value at the busbar clamp relatively minimum.

[0061] combine figure 1 with figure 2 For analysis, if the position of bus clamp B (l 1 ) is determined, then figure 2 in the l 1 The abscissa corresponding to the minimum value on the maximum bending moment curve (l 3 value) is the optimal position of bus clamp C; if the position of bus clamp C (l 3 ) is determined, then figure 2 Middle abscissa l 3 l corresponding to the curve where the minimum bending moment value at 1 The value is the optimal position of bus clamp B.

[0062] from figure 2 It can be seen that the minimum value of the maximum bending moment curve group diagram is concentrat...

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Abstract

Provided is a double-bus clamp fixing position determining method of a rectangular bus power system. On an AB section, a BC section and a CD section, the counter-force value F of each fulcrum can be calculated through a moment balance formula of a beam. When positions of B and C are determined, the bending moment MB of B, the bending moment MC of C and counter-force FRA, FRB, FRC and FRD of the fulcrums can be calculated according to the formula. The position of the bus clamp B is fixed, and the maximum moment of the bus changes along with moving of the bus clamp C, and a maximum moment curve can be correspondingly obtained. A series of maximum moment curves can be obtained according to different l1 length values, and a balance point is obtained by changing the positions of the bus clamps.

Description

technical field [0001] A method for determining the optimal fixing position of double busbar clamps in a rectangular busbar power system is especially suitable for reducing the force effect of electromotive forces on the busbars and ensuring the normal operation of the busbar system when the busbar clamps are used instead of insulators to fix the busbars. Background technique [0002] At present, due to the constraints of the internal structure and space of the ship hull and aircraft, it is sometimes impossible to properly install insulators and other components in the power lines of the rectangular busbars, and the busbars can only be fixed by busbar clamps instead of insulators. Current-carrying busbar conductors will generate electromotive force, especially when a strong current passes or a short-circuit fault occurs, the current is many times larger than the normal operating current, which will produce a huge force effect, endangering the stable operation of the busbar sy...

Claims

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Application Information

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IPC IPC(8): G06F19/00
Inventor 沈兵张晓锋周达华张超陈亮黄靖
Owner NAVAL UNIV OF ENG PLA
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