| 摘要 |
PURPOSE:To miniaturize a device and to make it highly precise and highly reliable by performing the filter processing and protective arithmetic processing in software processing. CONSTITUTION:The input signal from a power system is put to sampling hold in the same timing and through a multiplexer it is A/D-converted and stored to a RAM. Next, this RAM data is read and digital filter arithmetic processing is performed. This result is sent to a processing device for protective relay operation as serial data. Based on this numerical value, the processing device for protective relay operation performs relay protecting operation using a setting. |
