Dynamic Equivalent Modeling for Small and Medium Hydropower Generator Group Based on Measurements
1
School of Electrical Engineering, Southwest Jiaotong University, Chengdu 610031, China
2
Sichuan Electric Power Research Institute, Chengdu 610072, China
*
Author to whom correspondence should be addressed.
Academic Editors: Gabriele Grandi and Ying-Yi Hong
Energies 2016, 9(5), 362; https://doi.org/10.3390/en9050362
Received: 19 December 2015 / Revised: 26 April 2016 / Accepted: 5 May 2016 / Published: 12 May 2016
(This article belongs to the Special Issue Electric Power Systems Research)
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-TextKeywords:
small and medium hydropower generator group; dynamic equivalence; estimation-based equivalent method; measurements; dynamic multi-swarm particle swarm optimizer (DMS-PSO) algorithm
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Hu, B.; Sun, J.; Ding, L.; Liu, X.; Wang, X. Dynamic Equivalent Modeling for Small and Medium Hydropower Generator Group Based on Measurements. Energies 2016, 9, 362.
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