A Method of Improving Breakdown Voltage of Transformer Oil

Abstract

The invention discloses a method for increasing breakdown voltage of transformer oil. The method includes the following steps: step 1, measuring breakdown voltage and a particle sum of each phase of transformer oil of a transformer respectively to obtain original data of the breakdown voltage and the particle sum of the transformer oil; step 2, building a gray system model reflecting a relation between the breakdown voltage and the particle sum of the transformer oil; step 3, according to the original data obtained in the step 1 and the gray system model built in the step 2, a quantitative relation between the breakdown voltage and the particle sum of the transformer oil is determined; and step 4, according to the quantitative relation obtained in the step 3, reducing the particle sum of the transformer oil so as to enable the breakdown voltage of the transformer oil to meet a use requirement. By means of the method, the quantitative relation of the particle sum on the breakdown voltage of the transformer oil is determined, the breakdown voltage of the transformer oil is increased by processing the transformer oil, the breakdown voltage of the transformer oil meets a use requirement, and the transformer oil keeps good electric performance.

Description

technical field [0001] The invention relates to transformer oil, in particular to a method for increasing the breakdown voltage of transformer oil. Background technique [0002] As an insulating medium for electrical equipment, transformer oil should have good electrical performance. The electrical performance indicators of transformer oil include breakdown voltage, dielectric loss factor and volume resistivity. The electrical performance of transformer oil is related to the concentration, particle size, shape and type of particles in the oil. If the transformer oil contains mechanical impurities, it will cause the electrical properties of the oil such as dielectric strength, dielectric loss factor and volume resistivity to deteriorate, which will threaten the safe operation of power equipment. [0003] The particle pollution degree of transformer oil can reflect the cleanliness of the oil. The particle pollution degree has a very obvious impact on the electrical performanc...

AI Technical Summary

Problems solved by technology

[0004] At present, the qualitative relationship between the breakdown voltage of transformer oil and the total number of particles (the breakdown voltage of transformer oil decreases with the decrease of the total number of particles) is only used as a guiding principle for improving the breakdown voltage of transformer oil. The quantitative relationship between the two, so the increase in the breakdown voltage of transformer oil cannot be known based on the reduction in the total number of particles, so the process of increasing the breakdown voltage of transformer oil cannot be artificially controlled

Images