Signal processing transmission delay characteristic detection device, method and terminal equipment

Abstract

The embodiment of the present invention relates to a signal processing transmission delay characteristic detection device, method and terminal equipment, which are applied to a high-voltage direct current measurement system. The high-voltage direct current measurement system includes a resistance box, a remote module and a merging unit, and the signal processing transmission delay characteristic The detection device is also connected to the test power supply. The signal processing and transmission delay characteristic detection device includes a digital signal receiving and processing module, an A / D conversion module and a communication module. The signal processing and transmission delay characteristic detection device is provided with an inherent delay of the communication module receiving signals Time and the inherent response time of the A / D conversion module, the digital signal receiving and processing module processes and analyzes according to the relative delay time, inherent delay time and inherent response time to accurately obtain the signal processing and transmission delay time of the high-voltage DC measurement system, which solves the problem of traditional The rated delay detection equipment cannot accurately detect the delay time of the DC measurement system, which affects the reliability of the high-voltage DC measurement system.

Description

Technical field [0001] The present invention relates to the field of electricity measurement, and more particularly to a signal processing transmission delay characteristic detecting device, method, and terminal device. Background technique [0002] At present, the high-voltage DC measuring system is mainly composed of high voltage DC measuring devices, fiber circuit, and merging units. Currently, the current high-voltage DC measuring device is generally a laser power supply type active electronic transformer, and the high voltage DC measuring device includes a blocking partial pressure. Press and high precision resistance DC shifter. The high voltage DC measuring device corresponds to each of the secondary voltage signals of the resistance cartridge, and the distal module performs an A / D conversion process after filtering and signal conditioning of the secondary voltage dividing plate and transmits light signal transmission. To the merge unit, the merge unit transmits each cha...

AI Technical Summary

Problems solved by technology

The high-voltage direct current transmission control and protection system has high real-time requirements for voltage and current sampling digital signals (generally ≤100us), and the long delay of measurement data processing and transmission will seriously affect the operation reliability of the high-voltage direct current transmission control and protection system

[0004] The existing AC electronic transformer merging unit rated delay detection equipment can detect the rated delay of the merging unit, but the rated delay time of the AC system generally only requires ≤500us and is obtained through the process of combining the input signal and output signal waveform of the merging unit. Comparing the zero point to calculate the rated delay of the merging unit, and the delay time of the DC measurement system is generally ≤100us and there is no voltage zero crossing point, so the traditional AC electronic transformer merging unit rated delay detection equipment cannot accurately detect the DC measurement system. Rated delay

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