Title :
Fast analysis of active power-frequency dynamics considering network influence
Author :
Changgang Li ; Yutian Liu ; Hengxu Zhang
Author_Institution :
Sch. of Electr. Eng., Shandong Univ., Jinan, China
Abstract :
Analysis of frequency dynamics due to large active power imbalance is an important but time-consuming task of power system operation. Ignoring influence of reactive power and voltage on active power-frequency dynamics, a new direct current loadflow based frequency response model (DFR) is proposed in this paper. It is developed with “flat voltage” assumption to simplify generating unit and load models. Unlike average system frequency model (ASF) and system frequency response model (SFR), network is preserved in DFR model with direct current network equations. Accuracy and efficiency of DFR model are verified test systems. DFR model finds a balance point between full-time domain simulation and ASF model. It is a promising method for on-line evaluations.
Keywords :
load flow; power system faults; ASF model; DFR model; SFR model; active power-frequency dynamic fast analysis; average system frequency model; current network equations; direct current load flow based frequency response model; flat voltage assumption; full-time domain simulation; on-line evaluations; power system operation; reactive power; system frequency response model; time-consuming task; Computational modeling; Frequency domain analysis; Generators; Load modeling; Mathematical model; Power system dynamics; Power system stability; Active power; direct current (DC) network; frequency response; frequency stability;
Conference_Titel :
Power and Energy Society General Meeting, 2012 IEEE
Conference_Location :
San Diego, CA
Print_ISBN :
978-1-4673-2727-5
Electronic_ISBN :
1944-9925
DOI :
10.1109/PESGM.2012.6345354
