An Equivalent Modeling for Synthesis Load of Distributed Network with Small Hydropower

Abstract

A distributed network with small hydropower is taken as research subject, and in PSASP environment a simulation network is constructed, which is based on the network’s connection mode and operation data. At first, this paper give a description of 3rd mode of small hydropower generator, and generalize common analysis methods of synthesis load, and on this basis lists three means that used for aggregating parameters, then choose weighted average method to aggregate necessary parameters of Small hydropower generators. Secondly, the operation data is fully used to determine the equivalent impedance of the network. Finally, in order to verify the accuracy and feasibility of the method raised by the paper, the author make a comparison of small hydropower generators’ relative rocking curve before and after equivalence, meanwhile, analyzes change regulation of active power in contact line before and after the equivalence.