Title :
Overcurrent protection adjustment when connecting synchronous generation to power supply systems
Author :
Samoylenko, Vladislav O. ; Korkunova, Olga L. ; Pazderin, Andrew V. ; Novikov, Nicolas N.
Author_Institution :
Dept. of Automated Electr. Syst., Ural Fed. Univ., Yekaterinburg, Russia
Abstract :
The paper is devoted to the features of short-circuit current interruption under the conditions of small-scale distributed synchronous generation connection to medium voltage (MV) and low voltage (LV) power supply systems. Distributed generation (DG) even in a case of the unidirectional power supply has a great impact on overcurrent relay protection sensitivity and selectivity. Connecting DG leads to the specific character of short-circuit currents (SSC) of power supply systems, including increased level of short-circuit currents, current attenuation and the rate of aperiodic and periodic components. The paper also considers selection of setting values of specified time depending upon switchgear performance and the possibility of relay protection coordination for a generator and adjacent grid components.
Keywords :
distributed power generation; overcurrent protection; distributed generation; low voltage power supply system; medium voltage power supply system; overcurrent relay protection selectivity; overcurrent relay protection sensitivity; power supply system; short-circuit current interruption; small-scale distributed synchronous generation connection; unidirectional power supply; Attenuation; Generators; Power supplies; Protective relaying; Sensitivity; Short-circuit currents; Transient analysis; distributed generation; microgrids; power supply; relay protection; short-circuit; switchgear;
Conference_Titel :
Industrial Technology (ICIT), 2015 IEEE International Conference on
Conference_Location :
Seville
DOI :
10.1109/ICIT.2015.7125447
