Absolute time delay detection device and method of intelligent substation mutual inductor data collection system

Abstract

The invention provides an absolute time delay detection device of an intelligent substation mutual inductor data collection system. The absolute time delay detection device comprises a three-phase programmable power supply, an electronic transformer, a merging unit, a Hall sensor and a control workstation. The invention further provides an absolute time delay detection method of the intelligent substation mutual inductor data collection system. The three-phase power supply with the output voltage waveform modulated is adopted, and voltage output with coded information is achieved, and the Hall sensor is used for recording a corresponding waveform coding time sequence. Meanwhile, the control workstation detects and records corresponding output signals of the detected electronic current transformer and the merging unit, and the corresponding output signals are compared with the waveform coding time sequence recorded by the Hall sensor so as to obtain the absolute time delay of the mutual inductor data collection system. According to the absolute time delay detection device and method of the intelligent substation mutual inductor data collection system, accuracy of measurement can be ensured, meanwhile, accurate judgment and detection can be performed on the full period time delay with the detection method, and in addition, the phase difference of the current and the voltage can be detected under the condition of the same source.

Description

technical field [0001] The invention relates to the technical field of electric power detection, in particular to an absolute delay detection device and method for a transformer data acquisition system of an intelligent substation. Background technique [0002] The electronic transformer has the advantages of large transient range, small size, light weight, and the output signal can be directly input to the interface of computerized measurement and protection equipment. There is no electrical connection between the high-voltage side and the low-voltage side of the electronic transformer, which greatly simplifies the insulation structure and improves the insulation performance. It is the most significant advantage of the electronic current transformer compared with the traditional current transformer. During the construction of the smart grid Electronic transformers and merging units, as key equipment in smart substations, will gradually replace traditional electromagnetic tr...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention proposes an absolute time delay detection device and method of an intelligent substation transformer data acquisition system to solve the inaccurate absolute time delay test results of the prior art; can not be detected; and the problem that the phase difference between current and voltage cannot be detected

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