Design method of D-dot electric field sensor of power transmission line

Abstract

The invention provides a design method of a D-dot electric field sensor of a power transmission line. The design method includes steps: S1, obtaining parameters of the power transmission line, establishing a power transmission line electric field distribution model, and obtaining the distribution condition of surrounding electric fields of the power transmission line; S2, obtaining design parameters of the design target D-dot electric field sensor, establishing an electric field sensor model, and introducing the electric field sensor model into the power transmission line electric field distribution model; S3, establishing a field-circuit coupling model and an equivalent circuit of the design target D-dot electric field sensor and the power transmission line, performing simulation analysis and calculation on a transfer function of the field-circuit coupling equivalent circuit, and obtaining output parameters of the design target D-dot electric field sensor; and S4, determining the error between an output result of the design target D-dot electric field sensor and a theoretical calculation output result, wherein the current electric field sensor model satisfies the design requirement if the error is within a design range; and performing optimization adjustment on the design parameters and returning to S2 if the error is out of the design range. According to the method, the design precision and the product progress are improved, and the cost is reduced.

Description

technical field [0001] The invention relates to a design method, in particular to a design method of a D-dot electric field sensor of a power transmission line. Background technique [0002] In the design of the traditional electric field sensor, it is realized by the following method: first make the prototype of the sensor, put it in the electric field environment to be tested, and study the output characteristics, amplitude-frequency response and other performance of the sensor by changing the electric field intensity. Design standards in advance, then optimize the design of the sensor and then conduct experiments; this method makes the design of the electric field sensor expensive, and more importantly, it is blind in the design process, and the final structure is achieved through repeated structural improvements and tests determined, resulting in low efficiency, and the final product has low accuracy in electric field measurement; therefore, in order to solve the above t...

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Problems solved by technology

[0002] In the design of the traditional electric field sensor, it is realized by the following method: first make the prototype of the sensor, put it in the electric field environment to be tested, and study the output characteristics, amplitude-frequency response and other performance of the sensor by changing the electric field intensity. Design standards in advance, then optimize the design of the sensor and then conduct experiments; this method makes the design of the electric field sensor expensive, and more importantly, it is blind in the design process, and the final structure is achieved through repeated structural improvements and tests determined, resulting in low efficiency, and the final product has low accuracy in electric field measurement; therefore, in order to solve the above technical problems, a new design method for electric field sensors needs to be proposed

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