Development and application of a three-dimensional simulation system for relay protection devices based on analytical calculation
At present,the fixed value transmission capability of the 3D simulation system for relay protection devices is difficult to achieve safe operation of the transmission network,resulting in abnormal changes in transmission wavelength and redundant fault feature data.A digital dynamic model method suitable for the three-dimensional simulation system of relay protection devices was in-novatively designed through research.Relay protection verification was achieved through analytical calculation methods,with a focus on the selection characteristics of relay faults,constraint conditions of relay protection settings,and optimization of relay protection settings under the digital dynamic model.The calibration method provided by the research institute has a transmission waveform that is closer to the ideal transmission waveform,with a smaller fluctuation range of 0-0.94m,while the transmission waveforms of the other three calibration methods differ significantly from the ideal waveform.The verification efficiency and error under different test sample numbers and unit verification duration meet ideal values.The dynamic digital model constant value verification method of the three-dimensional simulation system for electrical protection devices can to some extent suppress the fluctuation and change ability of relay waves,while greatly improving the transmission ability of relay wave constant values in the distribution network environment,thereby providing reliable support for the security of the power industry grid.
digital dynamicsrelay protectionfixed valuefault characteristics
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