Conductor corona discharge electric field non-intrusive measurement system and application thereof

Abstract

The invention discloses a conductor corona discharge electric field non-intrusive measurement system and application thereof. The system comprises: a characteristic spectrum detection array used for collecting and processing a plurality of groups of optical signals generated by a conductor in a radial direction in a corona discharge process at different moments to obtain a plurality of groups of characteristic light intensity peak electric signal data at different moments; a data acquisition module which is used for synchronously receiving multiple groups of characteristic light intensity peak electric signal data at the same moment and transmitting the multiple groups of characteristic light intensity peak electric signal data at the same moment to an electric field data calculation module; and the electric field data calculation module which is used for calculating the electric field intensity distribution of the conductor in the radial direction at different moments through an Abel inverse transformation algorithm and an electric field inversion model based on an emission spectrum double-spectral-line ratio method according to the received multiple groups of characteristic light intensity peak electric signal data at each same moment. The system has high time and space resolution capability, does not cause distortion to a measured electric field, and is small in measurement error.

Description

technical field [0001] The invention belongs to the technical field of conductor corona discharge electric field measurement, and more specifically relates to a non-intervention measurement system of conductor corona discharge electric field and its application. Background technique [0002] The electromagnetic environment of high-voltage transmission lines is a key issue in the design, construction and operation of transmission lines. Whether it is a DC or AC transmission line, when the electric field strength on the surface of the conductor exceeds the breakdown field strength of the air, corona discharge will occur on the surface of the conductor. The corona discharge generated by the transmission line will not only cause power loss, but also produce radio interference and audible noise, which will affect the production and life of nearby people. Therefore, in order to control the harm caused by corona discharge on high-voltage transmission lines, it is necessary to stri...

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Problems solved by technology

[0008] 1. The existing invasive electric field measurement technology, such as the induction electrode electric field measurement system or the electro-optic sensor based on the Pockels effect, is restricted by the geometric size of the invasive electric field probe, and its spatial resolution cannot meet the measurement requirements

[0009] 2. There are complex ionization reactions on the surface of the high-voltage AC-DC transmission line conductors, and the space charges formed will accumulate on the surface of the intervening electric field probe, thereby increasing the electric field measurement error

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