J'ai Besoin D'aide (Correction De Texte)

[best7b]

Bonjour ,

j'ai écrit un article scientifique en Anglais. je suis sur que j'ai comis quelques fautes dans cet article . Donc , j'ai besoin d'aide pour corriger mon article :

section 1:

Our objective is to determine the active zone of pollution without and under the electric discharge, to find the dynamic model which gives the same measured flashover voltage. First we supposed, for the same resistance of pollution measured and calculated we have the same flashover voltage measured and calculated.

In this section, we measured the resistance of pollution (electrolyte resistance) without the electric discharge between two bands of copper of width 2πr_c and 2πr_pn fixed to the insulating plate (Plexiglas) filled with (H2O+NaCl), where r_c and r_pn are respectively the radius of the cap and pin (figure 4), we calculated it using the equation (1), and we determined it using the finite element Method (Software) FEM (figure 7) [2, 3].

For the various values of the resistivity, figure 1 presents the results of the total resistance of pollution (θ=2π) obtained by calculation, finite element Software FEM, ¶and those measured in experiments.

Section 2:

We can see by comparing these results between them as there is a significant difference between calculation and the measurement which also coincides with FE Method, this difference can be explained by the non-uniformity of the distribution of current lines, because the calculation using equation (1) supposes a uniform distribution of current lines and all the surface is used, In reality the distribution of current lines is not uniform and certain surfaces are not traversed by the electrical current (Figure 2).

Thus to correct the model we rewrite the angle in the form n.θ= 2π, where n is a correct factor who takes into account the effect of constriction of current lines, it ¶ is calculated as n= Rp/Rfe, Rp is the resistance of pollution layer using equation (5), and Rfe is the resistance of pollution layer using FEM. this factor is constant for any value of the resistivity n≈3/2 this latter factor is in good agreement with the factor of conductivity find in reference [4,7] which includes the thermal effects and the non-uniformity of pollution. Using this factor and we have θ=4π/3.

The resistance of pollution layer using equation (1) and the new θ (corrected calculation) is shown in Figure 2.

This angle covers the active pollution layer without electric discharge, to validate this proposal concerning the zone of influence defined by the angle θ=4π/3 on the determination of the resistance of the pollution layer, we studied the influence of this last for three types of cap and pin insulators respectively BSFT9336, U160As and Aerodynamic U120 as shown in Figure 2.

Section 3:

The critical current is measured at different values of esdd, the obtained results are plotted in Figure 4, also on the same figure, then calculates the critical current values using the dynamic arc Model for θ=4π/3 are plotted. The agreement between the measurement and calculation is clear, which mean that the critical current depends on the resistance of pollution layer and that this angle is really representing the zone of influence on the determination of the resistance of pollution.

Section 4:

It was shown that for the same resistance of pollution calculated and measured on the open model for θ=4π/3, the predicted results of flashover voltage of the dynamic model are slightly conservative compared to the experimental ones [3]. These results resemble the results of other researchers [4,5], which mean that the critical flashover voltage depends not only by the resistance of the pollution. We analyzed this problem and we decrease this angle (θ) for the calculation using the dynamic arc model and we compared with the measured flashover voltage until we find the zone of influence or the active pollution layer under electric discharge gives the same flashover voltage measured and calculated by the model, this angle defined by the angle θ=π which represents the surface that covers the active layer of pollution on the determination of critical flashover voltage.

Merci d'avance .

[best7b]

Bonjour,

Je vous demande juste de corriger le texte par partie (section) , chaque jour une partie si possible

Très amicalement

[Jean B]

Bonjour,

Sois assuré que ce n'est pas mauvaise volonté de ma part mais, afin de corriger quelque texte en anglais que ce soit, j'ai besoin de le comprendre parfaitement.

Or là, c'est pour moi aussi clair que du mandarin, désolé.

[Starvol]

Ça pour être scientifique, c'est scientifique! ^^

[kristine]

le niveau est très haut pour moi qui pourtant aime la langue anglaise

[Jean B]

Pour clore le sujet, j'ajouterai cette remarque (si on la juge perfide, qu'on veuille bien me la pardonner) : il existe des sites où des traducteurs spécialisés exercent leurs talents mais...ils sont payants.