CN107091812A - A kind of antifouling flush paint aging analysis method - Google Patents

Abstract

The present invention relates to an anti-pollution flashover paint aging analysis method, which is characterized in that it comprises the following steps of setting a set of color charts to characterize the color change of the anti-pollution flashover paint; The color index of the anti-fouling flashover paint is determined by color comparison. The larger the color index value, the more serious the anti-fouling flashover paint fades and the higher the aging degree. Aiming at the remarkable phenomenon that the color changes during the aging process of the anti-fouling flashover paint, the present invention sets and uses a set of color comparison cards to analyze the aging degree of the anti-fouling flashover paint, which can very intuitively and more accurately characterize the aging degree of the anti-fouling flashover paint It not only enriches the evaluation methods, but also improves the accuracy of the evaluation, which can effectively promote the anti-pollution flashover coating aging evaluation work, and provide an important reference for the anti-pollution flashover work of the external insulation of the power system.

Description

A kind of antifouling flashover paint aging analysis method

technical field

The invention belongs to the technical field of anti-pollution flashover, in particular to an anti-pollution flashover coating aging analysis method.

Background technique

With the development of the national economy, the air pollution is becoming more and more serious, which increases the possibility of pollution flashover accidents in the external insulation equipment of the power system. Coating anti-pollution flashover paint on the surface of insulators, as an effective anti-pollution flashover technical measure, has been widely used in power systems and achieved remarkable results. However, anti-fouling flashover coatings are subjected to many electrical stresses and environmental stresses such as high field strength, light, rain erosion, and pollution deposition during long-term outdoor operation, and will inevitably age, peeling, chalking, fading, Deterioration phenomena such as shedding and water repellency decrease, thereby reducing its anti-fouling flashover effect. If effective measures are not taken in time to deal with it, the probability of pollution flashover on the external insulation equipment of the power system will be greatly increased, which will seriously threaten the safe and stable operation of the power grid.

In the aging process of antifouling flashover coatings, color change is a more significant phenomenon. When the anti-fouling flashover coating is significantly aged, it often shows a relatively obvious fading phenomenon, which is a very intuitive and accurate parameter for the characterization of its aging degree and operating state. How to effectively analyze the aging degree of anti-pollution flashover coatings to ensure the reliable operation of insulators in operation is an urgent problem to be solved.

Contents of the invention

The purpose of the present invention is to overcome the deficiencies of the prior art, provide an anti-pollution flashover coating aging analysis method, and solve the problem of effective analysis of the aging degree of the anti-pollution flashover coating coated on the surface of insulators.

The present invention solves its technical problem and realizes by taking the following technical solutions:

A kind of antifouling flashover paint aging analysis method, comprises the following steps:

Step 1. Set up a set of color comparison cards to characterize the color change of the antifouling flashover paint;

Step 2. Use the above color comparison card to compare with the anti-fouling flashover coating actually applied on the outer insulating surface, and determine the color index of the anti-fouling flashover coating through color comparison. The larger the color index value, the anti-fouling flashover coating fades The more serious, the higher the degree of aging.

The color comparison cards are nine and correspond to nine color indexes respectively, and the color indexes use the RGB color space for numerical representation and are respectively set as follows:

When the color index is 1, the red pixel element value is 147-152, the green element value is 68-78, and the blue element value is 55-64;

When the color index is 2, the red pixel element value is 153-157, the green element value is 79-87, and the blue element value is 65-74;

When the color index is 3, the red pixel element value is 158-162, the green element value is 88-98, and the blue element value is 75-84;

When the color index is 4, the red pixel element value is 163-167, the green element value is 99-107, and the blue element value is 85-94;

When the color index is 5, the red pixel element value is 168-172, the green element value is 108-118, and the blue element value is 95-104;

When the color index is 6, the red pixel element value is 173-177, the green element value is 119-127, and the blue element value is 105-114;

When the color index is 7, the red pixel element value is 178-182, the green element value is 128-138, and the blue element value is 115-124;

When the color index is 8, the red pixel element value is 183-187, the green element value is 139-147, and the blue element value is 125-134;

When the color index is 9, the red pixel element value is 188-192, the green element value is 148-158, and the blue element value is 135-144.

When the color comparison card is compared with the anti-fouling flashover paint coating actually coated on the outer insulating surface, if the color index is 1-3, it is judged to be a good anti-fouling flashover paint; if the color index is 4-6, It is judged as mildly aged anti-fouling flashover coating; if the color index is 7-9, it is judged as severely aged anti-fouling flashover coating.

Advantage and positive effect of the present invention are:

Aiming at the remarkable phenomenon of color change during the aging process of the anti-fouling flashover paint, the present invention sets and uses a set of color comparison cards to analyze the aging degree of the anti-fouling flashover paint, which can very intuitively and accurately characterize the aging degree of the anti-fouling flashover paint It not only enriches the evaluation methods, but also improves the accuracy of the evaluation, which can effectively promote the anti-pollution flashover coating aging evaluation work, and provide an important reference for the anti-pollution flashover work of the external insulation of the power system.

Description of drawings

Fig. 1 is a schematic diagram of a color chart of the present invention;

Figure 2 is a schematic diagram of the RGB color space.

detailed description

Embodiments of the present invention are described in further detail below in conjunction with the accompanying drawings:

An anti-fouling flashover coating aging analysis method is realized based on the following characteristics of the anti-fouling flashover coating: when the anti-fouling flashover coating coated on the outer insulating surface ages, there will often be a very obvious discoloration phenomenon. Most coatings will fade, chalk and so on. Quantitative description of the degree of color change of the coating can characterize the color difference of the anti-fouling flashover coating, thereby characterizing its aging degree.

The color of an object is determined by three factors: hue, lightness, and saturation. Hue refers to the visual performance of visible light of different wavelengths; lightness refers to the degree of lightness and darkness of the color, which is related to the color reflectivity of the surface of the object; saturation refers to the purity of the color, that is, the degree of condensation of the color pigment. In daily image processing, RGB color elements are often used to represent colors. The values represented by R, G, and B can uniquely determine the color of the object, as shown in Figure 2. Therefore, if the color of an object is regarded as a three-dimensional linear space, R, G, and B can be used as a set of bases of the space, and then the color of the object can be expressed linearly. Each color has its unique corresponding color vector, and the color difference between different colors can be expressed by the modulus of the difference vector. The color difference analysis should be carried out on the difference between the inner layer color and the surface layer color of each sample, and the color difference between different samples is not comparable. In the analysis, use the RGB color vector inside the sample as the basic vector, and then use the RGB color vectors on the upper and lower surfaces to get the difference vector, that is, the modulus of the difference vector can be used to represent the color difference. Its calculation formula is as follows:

Anti-pollution flashover paint aging analysis method of the present invention comprises the following steps:

Step 1. Set up a set of color comparison cards to characterize the color change of the antifouling flashover paint.

In order to facilitate on-site use and prevent color differences that may be caused by different shooting conditions, for the red anti-fouling flashover paint that is currently the most widely used, this embodiment sets the color change of the anti-fouling flashover paint into nine color comparison cards, and corresponds to 1 ~9 color index, as shown in Figure 1. The 9 colors specified in the color card are numerically expressed in the RGB color space, as shown in Table 1.

Table 1 RGB color space value range

color index R G B 1 147～152 68～78 55～64 2 153～157 79～87 65～74 3 158～162 88～98 75～84 4 163～167 99～107 85～94 5 168～172 108～118 95～104 6 173～177 119～127 105～114 7 178～182 128～138 115～124 8 183～187 139～147 125～134 9 188～192 148～158 135～144

Step 2. Use the color comparison card to compare with the anti-fouling flashover coating actually coated on the outer insulating surface, and determine the color index of the anti-fouling flashover coating through color comparison. The larger the value, the more serious the anti-fouling flashover coating fades. The higher the degree of aging. If the color index is 1 to 3, it is judged as a good antifouling flashover coating; if the color index is 4 to 6, it is judged as a lightly aged antifouling flashover paint; if the color index is 7 to 9, it is judged as Severely aged antifouling flashover coatings.

It should be emphasized that the embodiments described in the present invention are illustrative rather than restrictive, so the present invention includes but not limited to the embodiments described in the specific implementation manner, and those skilled in the art according to the technology of the present invention Other implementations derived from the scheme also belong to the protection scope of the present invention.

Claims (3)

1. a kind of antifouling flush paint aging analysis method, it is characterised in that comprise the following steps：

Step 1, one group of colorimetric card is set to characterize the color change of antifouling flush paint；

Step 2, contrasted in the antifouling flush paint coating of outer insulating surface using above-mentioned colorimetric card and practical coating, pass through face Colour contrast determines the color index belonging to antifouling flush paint, and color index numerical value is bigger, then antifouling flush paint fades more serious, always Change degree is higher.

2. a kind of antifouling flush paint aging analysis method according to claim 1, it is characterised in that：The colorimetric card is nine Individual and correspond to nine color indexs respectively, the color index carries out numerical value expression and setting respectively such as using rgb color space Under：

When the color index is 1, its red pixel key element value is 147~152, and green key element value is 68~78, blue key element It is worth for 55~64；

When the color index is 2, its red pixel key element value is 153~157, and green key element value is 79~87, blue key element It is worth for 65~74；

When the color index is 3, its red pixel key element value is 158~162, and green key element value is 88~98, blue key element It is worth for 75~84；

When the color index is 4, its red pixel key element value is 163~167, and green key element value is 99~107, blue key element It is worth for 85~94；

When the color index is 5, its red pixel key element value is 168~172, and green key element value is 108~118, and blueness will Element value is 95~104；

When the color index is 6, its red pixel key element value is 173~177, and green key element value is 119~127, and blueness will Element value is 105~114；

When the color index is 7, its red pixel key element value is 178~182, and green key element value is 128~138, and blueness will Element value is 115~124；

When the color index is 8, its red pixel key element value is 183~187, and green key element value is 139~147, and blueness will Element value is 125~134；

When the color index is 9, its red pixel key element value is 188~192, and green key element value is 148~158, and blueness will Element value is 135~144.

3. a kind of antifouling flush paint aging analysis method according to claim 2, it is characterised in that：The colorimetric card and reality When the antifouling flush paint coating that border is coated in external insulation surface is contrasted, if color index is 1~3, it is judged as operation Good antifouling flush paint；If color index is 4~6, it is judged as the antifouling flush paint of slight aging；If color index For 7~9, then it is judged as the antifouling flush paint of serious aging.