Integrated optical sensor probe for measuring broadband and high-amplitude current

Abstract

The invention discloses an integrated optical sensor probe for measuring broadband and high-amplitude current. The integrated optical sensor probe comprises magneto-optical glass, the magneto-opticalglass is fixedly connected into a shell, a first collimator and a second collimator are correspondingly and fixedly connected into the two ends of the shell, a polarizer and an analyzer are arranged at the two ends of the magneto-optical glass, an activizer is arranged in the middle of the magneto-optical glass, the first collimator and the second collimator are correspondingly connected with an input optical fiber and an output optical fiber, the input optical fiber and the output optical fiber are correspondingly connected to a polarization laser and a laser detector, the first collimator isused for converting polarized light into spatial parallel light to act on the magneto-optical glass, and the second collimator is sued for receiving spatial parallel light after the analyzer and transmitting to the output optical fiber. According to the integrated optical sensor probe, safety and reliability are achieved, impact on the insulation performance of line equipment is not produced, various types of current can be measured, integrated design is achieved, installation is convenient and reliable, frequency response is wide, and transient performance is good; volume is small, iron coreis avoided, high-low pressure isolation is achieved, and the requirements of a digital substation are met.

Description

technical field [0001] The invention relates to an integrated optical sensor probe for measuring wide-band and high-amplitude current, and belongs to the technical field of positioning of non-contact current measuring equipment. Background technique [0002] Current is one of the important observable state parameters of the power system. The transient current has rich information parameters, including waveform, frequency, amplitude and other characteristics. It is important information reflecting the disturbance and fault process of the power system. Real-time observation of the transient current It is an important requirement for power grid transient information acquisition and accident traceability. Although the traditional electromagnetic current transformer has undergone on-site digital transformation, there are still many disadvantages when measuring transient current, such as high insulation cost, easy magnetic saturation, small measurement range, narrow frequency band...

AI Technical Summary

Problems solved by technology

Although the traditional electromagnetic current transformer has undergone on-site digital transformation, there are still many disadvantages when measuring transient current, such as high insulation cost, easy magnetic saturation, small measurement range, narrow frequency band, residual magnetism, slow dynamic response, and inability to Problems such as measuring high-order harmonics have seriously affected the real-time and accurate acquisition of transient current data

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