A Study on the Intelligent Electronic Device for Non-Linear Loads

비선형 부하에 적용이 가능한 IED에 관한 연구

  • 박종찬 (오산대학 전기시스템제어과) ;
  • 김병진 (현대중공업 기전연구소) ;
  • 김수곤 (숭실대학교 전기공학과 대학원) ;
  • 전희종 (숭실대학교 전기공학과)
  • Published : 2003.10.01

Abstract

In this paper, the IED(Intelligent Electronic Devices) with the consideration of harmonic problems is discussed, With significant development of power electronics technology, the proliferation of a nonlinear load has more deteriorated power quality, As continuous harmonic current makes for a shortening lifetime, overheat and abnormal operation, it should be considered to improve these problems. However, the conventional digital protective relay which eliminates harmonic elements with orthogonal filter has a defect on actually implementation. The prototype IED is constructed with Digital Signal Processor(TMS320C32) and Complex Programmable Logic Device. According to the experiment and simulation results, it is proved that the proposed system has good performance of measuring harmonic factors and protecting electrical equipment.

본 논문에서는 IED(Intelligent Electronic Devices)에서의 고조파 문제를 연구하였다. 최근 전력전자 기술의 급격한 발전으로 비선형부하에 의한 전력 품질의 왜곡이 심각해지고 있다. 연속적인 고조파 전류는 전련기기의 수명을 단축시키고 발열 문제가 발생하며 비정상적인 동작을 유발한다. 이러한 문제를 해결하기 위한 디지털 보호계전 시스템에서 전통적인 방법으로 전력을 계측하면 고조파의 영향을 고려할 수 없다. 이러한 문제를 해결하기 위하여 본 연구에서는 TMS320C32 DSP와 CPLD를 이용한 IED prototype을 구현하여 실험을 통해 성능을 확인하였다.

Keywords

References

  1. The 39th Rural Electric Power Annual Conference no.B1 A Quantum leap into the IED age R.C.Patterson
  2. Industry Applications Society Annual Meeting, 1991, Conference Record of the 1991 IEEE v.2 Effect of Waveform Distortion On Protective Relays W.A.Elmore;C.A.Kramer;S.E.Zocholl
  3. Thirty Fourth IAS Annual Meeting. Conference Record of the 1999 IEEE v.2 Innovative Substation Design -The Bay Controller Concept Douglas Proudfoot
  4. Power Systems , IEEE Transactions on v.15 no.Issue 3 Active Power Measurement in Nonsinsoidal Environments L.G.Durnte;P.K.Ghosh
  5. Instrumentation and Measurement, IEEE Transactions on v.49 no.Issue 2 Average Power estimation Under Nonsinusidal Conditions P.Carbone;D.Petri
  6. IEEE Transactions on Circuits and Systems-Ⅱ Analog and Digital Signal Processing v.47 no.11 Design of Low-Cost and High-throughput Linear Arrays for DFT Computation Algorithms, and Implementations Shen-Fu Hsiao;wei-Ren Shiue
  7. Instrumentation and Measurement, IEEE Transactions on v.47 no.Issue 1 Digital Power Metering Manifold Chung-Ping Young;J.Devaney
  8. Power Engineering Society Summer Meeting, 2000. IEEE v.2 Harmonic Measurement System via Sync Measuretent A.P.S. Meliopoulas;B.Fardanesh;S.Zelingher;G.J.Cokkinides
  9. Instrumentation and Measurement, IEEE Transactions on v.49 no.Issue 1 New Algorithm for Measuring 50/60Hz AC Values Based on the Usage of slow AD Converters P.Petrovic;S.Marjanovic;M.R.Stevanovic