Title :
Phase-plane analyses of a microgrid under PQ control mode
Author :
Leiqi Zhang ; Yun Liu ; Huanhai Xin
Author_Institution :
Coll. of Electr. Eng., Zhejiang Univ., Hangzhou, China
Abstract :
Analysis of a microgrid via small-signal stability method is well established. However it only depicts the system dynamics around the equilibrium point. To fully investigate the behavior of a microgrid, the phase-plane method should be adopted. In the paper, the state space model of a simplified microgrid under PQ control mode is established. The phase diagrams under three types of load are studied respectively with the help of PSCAD/EMTDC. Some ways to stabilize the system are proposed at last.
Keywords :
distributed power generation; phase diagrams; power system CAD; power system dynamic stability; PQ control mode; PSCAD/EMTDC; equilibrium point; phase diagrams; phase-plane analyses; simplified microgrid; small-signal stability; state space model; system dynamics; Microgrid; PQ Control; Phase Plane Method; Stability;
Conference_Titel :
Sustainable Power Generation and Supply (SUPERGEN 2012), International Conference on
Conference_Location :
Hangzhou
Electronic_ISBN :
978-1-84919-673-4
DOI :
10.1049/cp.2012.1764
