A Study on the Harmonic Current Characteristic and Emission Value Assess Method Considering the Linear Load

선형부하가 고려된 고조파 전류 특성 및 방출값 평가

  • 박용업 (한국전력공사 전력연구원) ;
  • 최성훈 (한국전력공사 전력연구원) ;
  • 장준수 (한국전력공사 배전계획처)
  • Published : 2010.01.01


In order to operate the power system satisfactory for both system operators and customers, it is important to limit the harmonic currents to the allowable levels which injected into the system from the distorting installations. In this regard, the principles for the allocation of emission limits on individual customer were introduced in the technical report of IEC61000-3-6. According to these general principles, the emission limits are dependent on the agreed power of the customer, the power of the harmonic-generating equipment, and the system characteristics. The considerations in this report are very comprehensive and the process introduced is practical enough to implement as it is. However, there is a fact not appropriately dealing in the report that could be a very tickle but has a huge impact on determining the emission limit. This is the effect of non-harmonic load currents. More precisely, these are from the equipments which do not emit any harmonic or may emit harmonics but this specific order under the consideration by themselves if the source power is sinusoidal. The load currents originated from these equipments have an effect of active filter against the specific order of harmonic therefore, these should be dealt as a significant factoron the process of determining the emission limits for individual customer.


  1. 송양회 외, "저압 전기기의 고조파 영향 평가 및 방출 한계기준에 관한 연구", 산업자원부, pp.49-58, 2008
  2. IEC 61000-3-6 Ed 2, Assessment of harmonic emission limits for the connection of distorting installations to MV, HV and EHV power system, 2005
  3. 조남훈 외, "배전계통 고조파 관리기준 연구", 산업자원부, pp.81-181, 2005
  4. Manitoba HVDC Reserch Centre, PSCAD/EMTDC Manual part (2/2), 1988
  5. 한국전력공사, "배전계통 고조파 관리기준 잠정(안) 및 시범적용 계획", 2009
  6. 한국전력공사, "배전설계기준, 가공편 총칙", 2009
  7. 남기영 외, "고압수용가 고조파 대책 수립 및 업종별 고조파 환산계수 산정 기술개발", 산업자원부, 2007
  8. 한국전력공사, "기본공급약관 시행세칙", 2007