Research on the identification and adaptation of generalized load modeling based on distributed generators

Penetration of a large amount of distributed generators (DG) connected to distribution network will have notable effects on power system security, reliability, and stability. Generalized load modeling with a large amount of distributed generation considered is an opportunity as well as a challenge. This paper proposes a generalized load model structure of distribution network which contains SOFC systems, three-phase single stage photovoltaic systems and constant speed asynchronous generator, which can be obtained by adding two active power sources and one asynchronous generator to the fictitious bus of SLM model. For the generalized load model, an induction generator should be added to the fictitious bus of SLM model. Low sensitivity and non time-varying parameters for polymerization are fixed value, for high sensitive and time-varying parameters, in polymerization near value by using the Genetic Algorithm to identify. Only seven parameters, that is, the leakage inductance of stator, the portion of induction