TY - JOUR
T1 - Transient Monitoring Function–Based Fault Detection for Inverter-Interfaced Microgrids
AU - Sadeghkhani, Iman
AU - Esmail Hamedani Golshan, Mohamad
AU - Mehrizi-Sani, Ali
AU - Guerrero, Josep M.
AU - Ketabi, Abbas
PY - 2018/5
Y1 - 2018/5
N2 - One of the major challenges in protection of the inverter-interfaced islanded microgrids is their limited fault current level. This degrades the performance of traditional overcurrent protection schemes. This paper proposes a fault detection strategy based on monitoring the transient response of the inverter current waveform using a transient monitoring function. To enhance the ability of the proposed fault detection scheme, an auxiliary control system is employed in addition to the main control system of the inverter. The proposed scheme can also differentiate asymmetrical and symmetrical fault conditions from normal load switching events and is effective for various inverter topologies (i.e., three/four-leg), main current limiting strategies, and all reference frames of the multi-loop control system. The merits of the proposed fault detection scheme are demonstrated through several time-domain simulation case studies using the CIGRE benchmark low voltage microgrid network.
AB - One of the major challenges in protection of the inverter-interfaced islanded microgrids is their limited fault current level. This degrades the performance of traditional overcurrent protection schemes. This paper proposes a fault detection strategy based on monitoring the transient response of the inverter current waveform using a transient monitoring function. To enhance the ability of the proposed fault detection scheme, an auxiliary control system is employed in addition to the main control system of the inverter. The proposed scheme can also differentiate asymmetrical and symmetrical fault conditions from normal load switching events and is effective for various inverter topologies (i.e., three/four-leg), main current limiting strategies, and all reference frames of the multi-loop control system. The merits of the proposed fault detection scheme are demonstrated through several time-domain simulation case studies using the CIGRE benchmark low voltage microgrid network.
KW - Current limiting
KW - distributed energy resources (DER)
KW - fault detection
KW - inverter
KW - microgrid
KW - reference frame
KW - transient monitoring function (TMF)
KW - voltage-sourced converter (VSC)
UR - http://www.scopus.com/inward/record.url?scp=85046084480&partnerID=8YFLogxK
U2 - 10.1109/TSG.2016.2606519
DO - 10.1109/TSG.2016.2606519
M3 - Journal article
SN - 1949-3053
VL - 9
SP - 2097
EP - 2107
JO - I E E E Transactions on Smart Grid
JF - I E E E Transactions on Smart Grid
IS - 3
ER -