Dynamic Equivalent Modeling for Small and Medium Hydropower Generator Group Based on MeasurementsReport as inadecuate




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1

School of Electrical Engineering, Southwest Jiaotong University, Chengdu 610031, China

2

Sichuan Electric Power Research Institute, Chengdu 610072, China





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Author to whom correspondence should be addressed.



Academic Editors: Gabriele Grandi and Ying-Yi Hong

Abstract At present, the common practice in the power system of China is to represent the small and medium hydropower generator group as a negative load. This paper presents a method to build a dynamic equivalent model of the hydropower generator group using a 3rd order generator model and a static characteristic load model. Based on phasor measurements in the tie line which connects to the modeled hydropower generator group, the dynamic multi-swarm particle swarm optimizer DMS-PSO algorithm is used to obtain parameters of the equivalent model. The proposed method is verified in the small and medium hydropower generator group of Sichuan power grid with both simulation and actual data. The results show that the dynamic responses and the transient stability are consistent before and after the equivalence. The proposed method can be used for modeling a group of small and medium hydropower generators whose structures and parameters are unknown. View Full-Text

Keywords: small and medium hydropower generator group; dynamic equivalence; estimation-based equivalent method; measurements; dynamic multi-swarm particle swarm optimizer DMS-PSO algorithm small and medium hydropower generator group; dynamic equivalence; estimation-based equivalent method; measurements; dynamic multi-swarm particle swarm optimizer DMS-PSO algorithm





Author: Bowei Hu 1, Jingtao Sun 1, Lijie Ding 2, Xinyu Liu 1 and Xiaoru Wang 1,*

Source: http://mdpi.com/



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