Title :
Cascading failure model of AC-DC system and blackout mechanism analysis
Author :
Yuxin Zhong ; Xuemin Zhang ; Shaowei Huang ; Shengwei Mei ; Xiaopeng Yu ; Zhenan Zhang ; Quansheng Zhu
Author_Institution :
Dept. of Electr. Eng., Tsinghua Univ., Beijing, China
Abstract :
Because more and more DC systems come into use, it is necessary to analyze the role of DC systems in cascading failures. In this paper, blackout model of AC-DC system is proposed. To save computation time, short-circuit voltage, instead of detail time domain simulation, is used to evaluate the impact of AC system fault on DC system. And an AC-DC OPF of multiple islands is proposed to analyze the controllability of DC system in the background of cascading failure. With this model, simulation is performed on a reconstructive IEEE 30 bus test system. The result shows that appropriate dispatching operation on DC interconnection system can decrease more risk of blackout, comparing to AC or AC/DC interconnection system.
Keywords :
AC-DC power convertors; load flow; power system faults; power system interconnection; power system reliability; AC system fault; AC-DC OPF; AC-DC system; DC interconnection system; DC system controllability; blackout model; cascading failures; dispatching operation; reconstructive IEEE 30 bus test system; short-circuit voltage; Dispatching; Generators; HVDC transmission; Power system faults; Power system protection; Power system stability; Stability analysis; AC-DC Interconnection Mode; AC-DC System; Blackout Model; Cascading Failure; Dispatching;
Conference_Titel :
PES General Meeting | Conference & Exposition, 2014 IEEE
Conference_Location :
National Harbor, MD
DOI :
10.1109/PESGM.2014.6939904
