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Yu P.,Dalian University of Technology | Zhou W.,Dalian University of Technology | Zhao Y.,Dalian University of Technology | Sun H.,Dalian University of Technology | And 2 more authors.
Information Technology Journal | Year: 2012

Keeping the wind power constant is essential for the large-scale integration of wind power into electric power system. In this study, we classify the wind power fluctuation and propose a method of suppressing the fluctuant wind power by an Active-Parallel Hybrid Energy Storage System (APHESS). The APHESS consists of a battery, a supercapacitor and two charge-discharge controllers. By designing the configuration logically, the APHESS obtains the enhanced energy storage performance and the low investment cost. In order to realize the wind power suppression, the method of controlling the APHESS to exchange power precisely with the wind power system is developed in this study. For the purpose of making the battery and supercapacitor balance, respectively different kinds of fluctuation classified in this study, the power within APHESS is allocated reasonably between the battery and the supercapacitor. By the method proposed in this study, the fluctuant wind power can be balanced effectively and the service life of energy storage system can be prolonged. © 2012 Asian Network for Scientific Information.


Yu P.,Dalian University of Technology | Zhao Y.,Dalian University of Technology | Zhou W.,Dalian University of Technology | Sun H.,Dalian University of Technology | And 4 more authors.
Dianli Xitong Baohu yu Kongzhi/Power System Protection and Control | Year: 2011

According to the technical rule for connecting wind farm to power system established by the state grid corporation, a method for balancing fluctuant wind power is proposed to enhance the controllability of wind power. This method is based on a new pattern hybrid energy storage system. By decomposing the fluctuation of wind power, we conduct an analysis on the performance requirement for the energy storage system. Then, we develop a new pattern hybrid energy storage system to balance the fluctuant wind power. Through the design on the operation mode, the energy storage system can exchange power precisely and efficiently with wind power system. Also, different energy storage elements can be chosen to suppress different kinds of wind power fluctuation according to their own merit. The simulation indicates that the method can develop fully the merit of energy storage elements to extend the service life and that the balanced wind power can satisfy the requirement of real-time dispatching of power system.

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