Method, device and system for judging voltage level based on electric field sensors

Abstract

The invention provides a method, device and system for judging a voltage level based on electric field sensors. The method is applied to an MCU processor in the system for judging the voltage level based on the electric field sensors. The method comprises the steps that by receiving electric field values of each electric field transmitted by the electric field sensors, electric field value vectorsmeasured by each electric field sensor are constructed in an electric field space coordinate system; according to the projection relation of each electric field value vector in the electric field space coordinate system, an electric field coordinate conversion formula is constructed; the electric field gradient of each branch electric field value vector and the total electric field gradient are calculated; and the voltage grade is judged according to the change speed of the total electric field gradient. Through the method, the voltage level of the position of an operator can be obtained, andwhether the electric field value is greater than an alarm threshold value under the voltage level or not is judged combined with the electric field value at this time, so that the operator is accurately judged to be in a dangerous area.

Description

Technical field [0001] This application relates to the technical field of sensor applications, and in particular to a method, device and system for judging voltage levels based on electric field sensors. Background technique [0002] The power grid is a system composed of various voltage substations and transmission and distribution lines. As the scale of power grid construction continues to increase, the intensity of power transportation inspection work is also increasing. Due to the complex distribution of electric fields around the power transmission and distribution lines, substations, and related live equipment, operators are likely to stray into the dangerous area and cause electric shock accidents during the power transportation inspection work. [0003] In the prior art, in order to reduce the potential safety hazards of operators in the power transportation inspection work process, electric field early warning devices are used to determine the magnitude of the electric fi...

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Problems solved by technology

[0005] This application provides a method, device and system for judging voltage levels based on electric field sensors to solve the problem in the prior art that it is impossible to accurately judge whether there is danger in this area under multiple voltage levels only through the electric field value in a certain area

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