Method based on RTDS scripts to realize closed-loop tests on undercurrent grounding line selection devices

Abstract

The invention discloses a method based on RTDS scripts to realize closed-loop tests on undercurrent grounding line selection devices. According to the test method, a test platform mainly comprises a computer, an RTDS cabinet, a multi-path power amplifier and an undercurrent grounding line selection device; through voltage current signals generated by a typical simulation model established on the basis of actual parameters by an RSCAD simulation software, line selection tests on the undercurrent grounding line selection devices are carried out, the test results are fed back to the simulation mode to form a closed-loop test system, the whole system automatically operates under the control of the script program, and the line selection results of the line selection devices, result waveforms and COMTRADE files are filly stored in a designated directory. Through the method, automatic and comprehensive tests on the undercurrent grounding line selection devices can be realized, line selection accuracy situation and line selection output result files can be stored in real time, fault line selection accuracy of power distribution networks of electric power systems and operation safety and stability of the electrical networks are improved.

Description

technical field [0001] The invention relates to a method for closed-loop testing of a small-current grounding line selection device, in particular to a method for closed-loop testing of a small-current grounding line selection device based on an RTDS script. Background technique [0002] RTDS: The full name is Real Time Digital Simulator (Real Time Digital Simulator), developed and manufactured by RTDS Company in Manitoba, Canada, it is a device specially designed to study electromagnetic transient phenomena in power systems. RTDS script (RTDSScriptLanguage): RTDS script is in the RUNTIME of the RSCAD simulation software. By writing the script, the user can realize the automatic start and stop of the simulation, refresh the waveform diagram and save the data. situation is combined. [0003] Most of the 666KV distribution networks in my country are grounded with small currents. The small current grounding system makes the structure of the distribution network complex, and fa...

AI Technical Summary

Problems solved by technology

However, there is not yet a complete evaluation system and method for small current grounding line selection devices. Therefore, a method for automatic detection of line selection devices according to different fault conditions and real-time storage of test results is needed.

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