Research on microgrid power quality and control measures

doi:10.11930/j.issn.1004-9649.2012.3.38.4

Electric Power ›› 2012, Vol. 45 ›› Issue (3): 38-42.DOI: 10.11930/j.issn.1004-9649.2012.3.38.4

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Research on microgrid power quality and control measures

LIU Jin-xin¹, LI Peng^1,2, CUI Hong-fen³, XI Peng¹

1. Key Laboratory of Power System Protection and Dynamic Security Monitoring and Control under Ministry of Education, North China Electric Power University, Baoding 071003, China;
2. Suzhou Institute of North China Electric Power University, Suzhou 215000, China;
3. State Grid Electric Power Research Institute, Nanjing 210003, China

Received:2011-07-14 Revised:2012-01-13 Online:2016-02-29 Published:2012-03-18

Abstract

Abstract: The microgrid technologies have many outstanding advantages. However, the inherent characteristics of distributed generators （DGs）, the special network topology and the operation performances of microgrids bring unfavorable impacts on microgrid power quality. The structure and performances of microgrids were discussed. Based on the discussion, the microgrid power quality was analyzed and compared with traditional distribution grids. By replacing lowpass filter with mathematical morphological filter in detection unit, shunt active power filter （SAPF） model was improved. The selection of filter structure elements was also well analyzed. Simulation study was done with Matlab/Simulink software. The simulation results prove that the improved SAPF model can meet the real-time requirements of microgrids for power quality regulating devices.

Key words: microgrid, power quality, mathematical morphological filter, shunt active power filter, control measure

CLC Number:

TM727

LIU Jin-xin, LI Peng, CUI Hong-fen, XI Peng. Research on microgrid power quality and control measures[J]. Electric Power, 2012, 45(3): 38-42.

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