Comparison and Analysis of Location Methods for Energy Storage Devices in Multi-Machine Power Systems

REN Hongyu ,KANG Jitao ,QIAN Lin

Distributed Energy ›› 2019, Vol. 4 ›› Issue (2) : 23-29.

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Distributed Energy ›› 2019, Vol. 4 ›› Issue (2) : 23-29. DOI: 10.16513/j.cnki.10-1427/tk.2019.02.004
Basic Research

Comparison and Analysis of Location Methods for Energy Storage Devices in Multi-Machine Power Systems

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Abstract

Energy storage devices are used to suppress low-frequency oscillator (LFO) in power systems due to their fast response and flexible adjustment of active and reactive power, especially for inter-area oscillation mode. However, the determination of location of energy storage devices in multi-machine systems to suppress LFO more effectively is a question worthy of further study. Firstly, this paper establishes the simulation model of battery energy storage system (BESS) in the PSASP according to the control system and the interface part of the module. Secondly, the system state matrix and eigenvalues are calculated through the small signal stability analysis, and two methods of energy storage location, namely the eigenvector method and the eigenvalue sensitivity method, are compared, followed by the reason that the latter is more accurate. Finally, by a typical two-region four-machine system instance, the eigenvector and the eigenvalue sensitivity are respectively calculated to verify the sensitivity method owning a better adaptability for energy storage location.

Key words

battery energy storage system (BESS) / optimal location / eigenvalue sensitivity

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Hongyu REN , Jitao KANG , Lin QIAN. Comparison and Analysis of Location Methods for Energy Storage Devices in Multi-Machine Power Systems[J]. Distributed Energy Resources. 2019, 4(2): 23-29 https://doi.org/10.16513/j.cnki.10-1427/tk.2019.02.004

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Funding

Project supported by National Natural Science Foundation of China(51477143)
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