Protection Based On Fault Recorder Data To Set The Value Of The Sensitivity Calibration

The sensitivity of relay protection of power system could protect one of the important indexes of sensitive , reliable movements to weigh , must carry on the sensitivity to calculate while protecting and calculating whole definitely, check-up , this sensitivity of protecting definite value , meets the demands. Protect sensitivity check-up under the routine, calculated off-line according to several kinds of daily operation ways. But, with the enlargement day by day of the power system, the variety that systematic complexity and network change has determined the real operation way may go beyond several kinds of daily operation ways . Then, does the sensitivity protected under the present operation way meet the demands? Rotate and meet the demands to the protection sensitivity of the new operation way in the future? Must be set up and calculated again according to the check-up method of the regular sensitivity with this. If the data that obtain under the real-time operation way of the system, realize onlinly and calculate to the sensitivity under different states of the system, the above question is just easily solved.This text has summarized and analyzed the traditional check-up method of sensitivity of definite value of protection, recommend alternate distance protect emphatically among them and zero preface electric current protect, make certain exposition to pluses and minuses its. In addition, this text has also recommended operation principle and trouble of the trouble wave recording instrument to record the important function of the wave data in the current power system, to record by trouble wave data change into , protect definite value...