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Method for winding dynamic analogue element by adopting stranded conductors

A technology of multi-strand wires and components, which is applied in the field of power system dynamic simulation system, to achieve the effect of reducing the skin effect and meeting the simulation requirements

Inactive Publication Date: 2009-12-30
CHINA ELECTRIC POWER RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When transformers and reactors are running, current passes through the coil winding, and the winding wires will generate eddy current loss in the leakage magnetic field, and the unbalanced current loss will be caused by the leakage magnetic field in the parallel wires

Method used

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  • Method for winding dynamic analogue element by adopting stranded conductors
  • Method for winding dynamic analogue element by adopting stranded conductors
  • Method for winding dynamic analogue element by adopting stranded conductors

Examples

Experimental program
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Effect test

Embodiment Construction

[0012] Take the circuit component design as an example to illustrate

[0013] The total number of turns of the coil: W∑=24×24=576 turns, that is, a total of 24 layers are wound, and each layer has 24 turns.

[0014] Wire selection:

[0015] ① Use 19×Φ1.00 enamelled stranded wire, the diameter of the stranded wire is dj=5.35mm, and the thickness of the insulating layer and the film layer are considered.

[0016] ② Conductor cross-sectional area: S = 14.915mm2;

[0017] Coil size:

[0018] ① Coil average diameter Dp = 37.65cm;

[0019] ②Cake height:

[0020] h=k ωh *w h *d j =1.08×24×5.35 / 10=13.8672cm;

[0021] In the formula:

[0022] w h - the number of turns per layer of the coil;

[0023] k ωh ——Utilization factor value range: 1.07-1.08;

[0024] d j - the winding diameter.

[0025] ③Thickness of wire cake:

[0026] t=k ωt *w t *d j =0.98×24×5.35 / 10=12.5832cm;

[0027] In the formula:

[0028] w t - the number of coil winding layers;

[0029] k ωt ——U...

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Abstract

The invention provides a method for winding a dynamic analogue element by adopting stranded conductors, wherein, stranded enameled insulation conductors are taken as winding conductors of transformer model and reactor model to wind coils, thus achieving the aim of reducing eddy current loss and reducing unbalanced current loss; stranded enameled insulation conductors are taken as winding conductors of circuit model element in dynamic analogue system of the electric power system to wind the coils, thus achieving the aim of ensuring that the variation trend of the time constant frequency characteristic is in conformity with the prototype; additionally, the circuit model wired by stranded conductors also greatly reduces the skin effect of circuit. Therefore, the method for winding circuit model element by adopting stranded enameled insulation conductors in the invention can satisfy the requirement of realistic simulation.

Description

technical field [0001] The invention belongs to the field of dynamic simulation systems of electric power systems, and relates to a method for winding dynamic simulation components with multi-strand wires. Background technique [0002] As we all know, when simulating large-capacity corresponding prototypes with small-capacity motors and electrical appliances, we often encounter the problem of trying to reduce losses. Coil winding is the main part of transformer model and reactor model, because it produces eddy current loss and unbalanced current loss, which account for a large proportion of model loss. In order to reduce the model loss, it is necessary to optimize the winding method of the coil winding, from the widely used single-strand wire winding to the multi-strand wire winding. When developing line model components, the time constant frequency characteristics are required to meet the requirements of the prototype. In order to ensure this, it is necessary to use multip...

Claims

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Application Information

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IPC IPC(8): H01F41/06G09B23/18H01F41/066H01F41/069
Inventor 王仕荣周泽昕周春霞杜丁香张晓莉詹荣荣
Owner CHINA ELECTRIC POWER RES INST
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