Title :
A fast online load shedding method for mitigating FIDVR based on novel stability index
Author :
Mahari, Arash ; Seyedi, Heresh
Author_Institution :
Fac. of Electr. & Comput. Eng., Univ. of Tabriz, Tabriz, Iran
Abstract :
This paper presents an online fast load shedding method for mitigating Fault-Induce Delayed Voltage Recovery (FIDVR), using a new stability index. After fault clearing in a power system, the voltage may remain in lower levels for some seconds, which may result in voltage collapse in severe cases. In this paper, a new index, to identify instability, is presented, based on induction motor model. Instead of using voltage amplitude as a stability indicator, the proposed method applies a centralized scheme, using new the index. The new load shedding algorithm is applied to a practical test system in order to verify the proposed stability index and load shedding methodology. Simulations show the effectiveness of proposed method in decreasing the voltage recovery time.
Keywords :
induction motors; load shedding; power system dynamic stability; power system faults; FIDVR mitigation; fault clearing; fault induce delayed voltage recovery; induction motor model; online fast load shedding method; stability index; stability indicator; voltage collapse; Indexes; Induction motors; Power system stability; Reactive power; Relays; Stability criteria; FIDVR; load shedding; stability index; voltage stability;
Conference_Titel :
Electrical Engineering (ICEE), 2013 21st Iranian Conference on
Conference_Location :
Mashhad
DOI :
10.1109/IranianCEE.2013.6599887