Title :
Optimal method for mal-function for protective devices in distribution systems interconnected with PV systems
Author :
Park, Hyeonseok ; Son, Joonho ; Rho, Daeseok
Author_Institution :
Grad. Sch. of Dept. of Electr. & Electron., Korea Univ. of Technol. & Educ., Chun-an, South Korea
Abstract :
This paper deals with the optimal countermeasures for the mal-function of protective devices at primary feeder in distribution systems when new power sources like photovoltaic (PV) systems are interconnected, based on the symmetrical components of short circuit studies. When new power sources are considered to be interconnected to distribution systems, bi-directional power flow and interconnection transformer connection of new power sources may cause the operation problems of protective devices (mainly re-closer), since new power sources can change typical characteristics of distribution systems. Therefore, this paper shows an analysis skill of the mal-function mechanism of protective relay and proposes the optimal solution for the mal-function problem using the symmetrical components of fault analysis. And, also this paper shows the effectiveness of proposed method by the simulation at the field distribution systems.
Keywords :
photovoltaic power systems; power distribution faults; power distribution protection; power system interconnection; transformers; bi-directional power flow; distribution systems interconnection; interconnection transformer connection; photovoltaic systems; protective devices mal-function; Bidirectional control; Circuit faults; Integrated circuit interconnections; Load flow; Photovoltaic systems; Power system interconnection; Power system protection; Power system relaying; Protective relaying; Solar power generation; Photovoltaic systems (PV); Protective Devices; Protective coordination; Symmetrical components;
Conference_Titel :
Transmission & Distribution Conference & Exposition: Asia and Pacific, 2009
Conference_Location :
Seoul
Print_ISBN :
978-1-4244-5230-9
Electronic_ISBN :
978-1-4244-5230-9
DOI :
10.1109/TD-ASIA.2009.5356886