Modified analysis method for the influence of humidity on air gap discharge

Abstract

The application provides a correction analysis method based on the influence of humidity on air gap discharge, which comprises the following steps: S1. Controlling the environmental humidity to be 30% in a laboratory, applying voltage to a needle-plate air gap, and collecting the discharge voltage of the needle-plate air gap; S2. Collecting the humidity in the actual working condition environment in real time, and determining the humidity correction coefficient k of the target air gap RH ; S3. Calculating the discharge voltage of the target air gap according to the humidity correction coefficient and the discharge voltage of the needle-plate air gap, and determining the electrode distance of the air gap according to the discharge voltage; through the above method, different environmental occasions are simulated in the laboratory environment, the correction coefficients of different air gaps are obtained, then the discharge voltage is calculated according to the use occasions of the air gap and the correction coefficients, and the electrode arrangement of the air gap is combined with the actual occasion, so that the consumption of manpower and material resources can be effectively reduced, the actual environment can be combined, and the safe and stable operation of the power grid can be ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to an air gap analysis method, in particular to a correction analysis method based on the influence of humidity on air gap discharge. BACKGROUND

[0002] Air gap discharge is a common discharge form in power systems, and various power equipment can be equivalent to a typical air gap. Therefore, studying the discharge characteristics of air gaps and then guiding the configuration of air gap structures in the operating field has great theoretical research and engineering practical significance for the safe and stable operation of power grids.

[0003] The impulse discharge characteristics of air gaps will also differ under different environments. In the prior art, when air gaps are arranged, discharge impulse experiments need to be performed in different regions or different use occasions before the configuration of the air gaps is processed. This method requires a large amount of manpower and financial resources.

[0004] Therefore, in order to solve the above technical problems, a new technical means is urgently needed. SUMMARY

[0005] Therefore, the purpose of the present application is to provide a correction analysis method based on the influence of humidity on air gap discharge, which determines the humidity correction coefficient by taking 30% humidity as a reference and different humidity, and then determines the discharge voltage of the target air gap by taking the discharge voltage of the needle-plate air gap under 30% humidity, and can reasonably adjust the distance of the target air gap, which is beneficial to the arrangement of air gap distance, thereby effectively reducing the consumption of manpower and material resources, and can be combined with the actual environment to ensure the safe and stable operation of the power grid.

[0006] The present application provides a correction analysis method based on the influence of humidity on air gap discharge, comprising the following steps:

[0007] S1. Control the environmental humidity to be 30% in the laboratory, and apply voltage to the needle-plate air gap and collect the discharge voltage of the needle-plate air gap,

[0008] S2. Real-time collection of humidity in the actual working condition environment, and determination of the humidity correction coefficient k of the target air gap RH ;

[0009] S3. Calculate the discharge voltage of the target air gap according to the humidity correction coefficient and the discharge voltage of the needle-plate air gap, and determine the electrode distance of the air gap according to the discharge voltage.

[0010] Further, the needle-plate air gap is a reference air gap, and the ball-plate air gap and the ring-plate air gap are target air gaps.

[0011] Further, the correction coefficient k of the target air gap is determined by the following method: RH Determined by the following method:

[0012] Wherein, RH is the humidity in the actual working environment.

[0013] Further, the discharge voltage of the target air gap in the actual working environment is determined by the following method:

[0014]

[0015] Wherein: U T is the discharge voltage of the target air gap, is the discharge voltage of the needle-plate air gap when the air humidity is 30%.

[0016] Further, the distance between the electrodes of the air gap is adjusted by the following method:

[0017] When the discharge voltage of the air gap in the actual working environment is greater than the working voltage in the power system, the air gap distance is not adjusted;

[0018] When the discharge voltage of the air gap in the actual working environment is less than the working voltage in the power system, the air gap distance is adjusted, and the adjusted air gap distance is S:

[0019]

[0020] Wherein: S0 is the initial distance between the electrodes of the air gap, k s is the safety margin, the value range is [1.2, 1.4], and U0 is the working voltage of the power system.

[0021] The beneficial effects of the present application are as follows: through the present application, the humidity correction coefficient is determined by taking 30% humidity as the reference and different humidity, and then the discharge voltage of the target air gap is determined by the discharge voltage of the needle-plate air gap under the condition of 30% humidity, and the distance of the target air gap can be reasonably adjusted, which is beneficial to the arrangement of the air gap distance, thereby effectively reducing the consumption of manpower and material resources, and combining with the actual environment, ensuring the safe and stable operation of the power grid. BRIEF DESCRIPTION OF DRAWINGS

[0022] The present application will be further described below in conjunction with the drawings and examples:

[0023] Figure 1 The flowchart of the present application. DETAILED DESCRIPTION

[0024] The present application will be further described below in conjunction with the drawings and examples:

[0025] The application provides a correction analysis method based on the influence of humidity on air gap discharge, and comprises the following steps:

[0026] S1. Controlling the environmental humidity to be 30% in a laboratory, applying a voltage to a needle-plate air gap, and collecting the discharge voltage of the needle-plate air gap,

[0027] S2. Collecting the humidity in an actual working condition in real time, and determining the humidity correction coefficient k of a target air gap RH ;

[0028] S3. Calculating the discharge voltage of the target air gap according to the humidity correction coefficient and the discharge voltage of the needle-plate air gap, and determining the electrode distance of the air gap according to the discharge voltage; through the above method, the humidity correction coefficient is determined by taking 30% humidity as a reference and different humidities, then the discharge voltage of the target air gap is determined according to the discharge voltage of the needle-plate air gap under the condition of 30% humidity, and the distance of the target air gap can be reasonably adjusted, which is beneficial to the arrangement of the air gap distance, so that the consumption of manpower and material resources can be effectively reduced, and the safe and stable operation of the power grid can be ensured in combination with the actual environment.

[0029] Wherein: the needle-plate air gap is a reference air gap, and the ball-plate air gap and the ring-plate air gap are target air gaps.

[0030] In this embodiment, the needle-plate air gap is a reference air gap, and the ball-plate air gap and the ring-plate air gap are target air gaps.

[0031] Further, the correction coefficient k of the target air gap RH is determined by the following method:

[0032] Wherein, RH is the humidity in the actual working condition.

[0033] Further, the discharge voltage of the target air gap in the actual working condition is determined by the following method:

[0034]

[0035] Wherein: U T is the discharge voltage of the target air gap, U0 is the discharge voltage of the needle-plate air gap when the air humidity is 30%.

[0036] In this embodiment, the distance between the electrodes of the air gap is adjusted by the following method:

[0037] When the discharge voltage of the air gap in the actual working condition is greater than the working voltage in the power system, the air gap distance is not adjusted.

[0038] When the discharge voltage of the air gap in the actual working condition is less than the working voltage in the power system, the air gap distance is adjusted, and the adjusted air gap distance is S:

[0039]

[0040] Wherein: S0 is the initial distance between the electrodes of the air gap, k s The safety margin is in the range of [1.2, 1.4], and U0 is the working voltage of the power system. By adjusting the distance of the air gap through the above method, it can be ensured that the discharge voltage of the air gap is greater than the operating voltage in the power system, thereby ensuring that no discharge failure occurs.

[0041] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the present application and are not limiting. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced equivalently without departing from the purpose and scope of the technical solutions of the present application, and they should be covered in the scope of the claims of the present application.

Claims

1. A modified analysis method based on the influence of humidity on air gap discharge, characterized in that: Comprising the following steps: S1. Controlling the environmental humidity to be 30% in the laboratory, and applying voltage to the needle-plate air gap and collecting the discharge voltage of the needle-plate air gap, S2. Collect the humidity in the actual working environment in real time, and determine the humidity correction coefficient k of the target air gap RH ; S3. According to the humidity correction coefficient and the discharge voltage of the needle-plate air gap, calculating the discharge voltage of the target air gap, and determining the electrode distance of the air gap according to the discharge voltage; Wherein: the needle-plate air gap is the reference air gap, the ball-plate air gap and the ring-plate air gap are target air gaps; a correction factor k of the target air gap RH is determined by the method where RH is the humidity in the actual working environment; The discharge voltage of the target air gap in the actual working condition is determined by the following method: wherein: U T is the discharge voltage of the air gap, is the discharge voltage of the needle-plate air gap for an air humidity of 30%. The distance between the electrodes of the air gap is adjusted by the following method: When the discharge voltage of the air gap in the actual working condition is greater than the working voltage in the power system, the air gap distance is not adjusted; When the discharge voltage of the air gap in the actual working condition is less than the working voltage in the power system, the air gap distance is adjusted, and the adjusted air gap distance is S: where: S0 is the initial distance between the electrodes of the air gap, k s is the safety margin, with a value range of [1.2, 1.4], and U0 is the operating voltage of the power system.

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