Non-contact wireless transmission alternating-current voltage transformer based on electroluminescent device

Abstract

The invention provides a non-contact wireless transmission alternating-current voltage transformer based on an electroluminescent device. During measurement, a photoelectric sensing module is arranged beside a high-voltage transmission line, so that an electric field excited by the working state of the transmission line forms voltage in the photoelectric sensing module, and a detection optical signal is formed by the voltage; the optical signal integration module of the mutual inductor adjusts the detection optical signal into a sampling optical signal which can be used by the optical signal receiving and processing system of the mutual inductor, and the optical signal receiving and processing system converts the sampling optical signal transmitted by the optical signal integration module into a measurement electric signal; the voltage transformer is large in measuring range, wide in response frequency band, smaller in size than a traditional voltage transformer, simple in insulation structure, free of an iron core, free of an active circuit for driving, low in cost, safe, convenient and practical; and the peak value, the frequency and the waveform of the high-voltage transmission line to be detected can be transmitted to a far-end electric meter and monitoring equipment by means of an atmospheric channel, so that charging, monitoring and polling are easy, and the application range is wide.

Description

technical field [0001] The invention relates to the technical field of electric power operation and maintenance, in particular to a non-contact wireless transmission AC voltage transformer based on an electroluminescence device. Background technique [0002] With the gradual development of the power system, the measurement and monitoring of power lines are developing rapidly in the direction of light weight, intelligence and digitization. In recent years, my country has repeatedly proposed the concept of applying smart grids in power system planning in various conference documents guiding work, announcing that the existing power system is making great strides towards a new power system, and some of the original technologies are still To be upgraded and transformed. [0003] At present, 1100kV level ultra-high voltage has appeared, and the next voltage level may be 1500kV or 2000kV. With the increasing precision of industrial equipment, the accuracy of current and voltage par...

AI Technical Summary

Problems solved by technology

Although the size of industrial power equipment is getting smaller and smaller, the traditional instrumental electromagnetic voltage transformer needs a larger insulation structure when the voltage level is increased. Therefore, the traditional instrumental electromagnetic voltage transformer is difficult to meet the requirements of the new generation. The requirements of the power system, and it is increasingly unable to keep up with the development needs of the new power system in online detection, high-precision fault diagnosis, power digital network, etc. Most voltage transformers work in harsh high-voltage environments. In order to be able to achieve real-time monitoring And the billing function, the voltage transformer needs to transmit the high-voltage measurement value of the overhead transmission line to the meter or monitoring equipment, and the meter and monitoring equipment are far away from the voltage transformer, so a long-distance line needs to be laid, and the comparison of installation, maintenance and troubleshooting Difficult, so the current voltage transformer still needs to carry out industrial upgrading

Images