Effect of breaking high voltage direct current (HVDC) circuit on demonstrative project on power supply systems by service level in Sendai

A new differential current-based fast fault detection and accurate fault distance calculation is proposed for photovoltaic (PV)-based DC microgrid. A multiterminal direct current (MTDC) distribution network is studied as an adequate solution for present low-voltage utility grid scenario, where local distributed generators (DGs) are incorporated primarily by power electronics based DC-DC converters, DC-AC voltage-source converters (VSCs). PV and diesel generator (as auxiliary source) are considered for cascaded common DC bus, and AC utility bus integration is achieved by VSC unit for the proposed MTDC network. DC microgrid protection is quite significant research focus due to the absence of well-defined standards. Poleto-pole, pole-to-ground, PV-side DC series and ground arc faults are basically considered as DC distribution network hazards. A discrete model differential current solution is considered to detect, classify and locate the faults by modified cumulative sum average approach. A comprehensive case study is presented with different DC loadings, to deliberate effectiveness of the proposed protection scheme in terms of percentage error and trip time (Ts). The result verification is conducted in MATLAB environment as well as TMS320C6713 digital signal processor-based test bench with the proposed multiple DGs based DC microgrid.

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Power electronics toward the era of distributed generations

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2012

2012 IEEE 13th Workshop on Control and Modeling for Power Electronics (COMPEL)

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Effect of breaking high voltage direct current (HVDC) circuit on demonstrative project on power supply systems by service level in Sendai

Cited by 21 publications

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DCMicrogrid Control

DCMicrogrid Control

Differential current‐based fault protection with adaptive threshold for multiple PV‐based DC microgrid

Power electronics toward the era of distributed generations

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