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http://dx.doi.org/10.5916/jkosme.2012.36.4.527

A Study on the Protection and Measuring Algorithm of IED in Load Condition  

Lee, Sung-Hwan (위덕대학교 에너지전기공학부)
Publication Information
Journal of Advanced Marine Engineering and Technology / v.36, no.4, 2012 , pp. 527-532 More about this Journal
Abstract
Recently, in power system, even though the needs of protective IED(Intelligent Electronic Device) is highly increased, there are some problems in the field when use the IED. When the IED is in the fluctuated overload condition, because of the existing algorithm calculate the trip time only with the measured current of just previous measuring stage, the calculated trip time is not a proper value for the overload protection at this kind of condition, and when the load current fluctuate between overload and normal condition, because of the instantaneous reset characteristic of existing algorithm the IED dose not trip. And the non linear loads using power electronic elements seem to be increased. These non linear loads require a counterplan about various harmonics incoming to electric power systems. So we will give solutions about these problems.
Keywords
IED; Protective relaying; Measuring; Fluctuated overload condition; Harmonics;
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  • Reference
1 R. C. Patterson, "A quantum leap into the ied age", The 39th Rural Electric Power Annual Conference, pp. (B1)-1-5, 1996
2 G. Bucci, C. Landi, "A multi-DSP based instrument on a VXI C-Size Module for real-Time measurements", IEEE Transactions on Instrumentation and Measurement, vol. 49, Issue 4, pp. 884-889, Aug. 2000   DOI   ScienceOn
3 Chun-Yu Chen and Chieh-Hsiung Kuan, "Design and calibration of a noise measurement System", IEEE Transactions on Instrumentation and Measurements, vol. 49, no. 1, Feb. 2000