Oscillation centre identification method based on frequency characteristics in multi-source oscillation scenes

Jing Ma; Zhuojun Deng; Yongxin Zhang; Pei Li; James S. Thorp

Oscillation centre identification method based on frequency characteristics in multi-source oscillation scenes

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Author(s): Jing Ma^{1, 2} ; Zhuojun Deng¹ ; Yongxin Zhang¹ ; Pei Li¹ ; James S. Thorp²
- Affiliations: 1: State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources , North China Electric Power University , Beijing 102206 , People's Republic of China ;
  2: Bradley Department of Electrical and Computer Engineering , Virginia Polytechnic Institute and State University , Blacksburg, VA 24061 , USA
Source: Volume 12, Issue 13, 31 July 2018, p. 3346 – 3352
DOI: 10.1049/iet-gtd.2017.1946 , Print ISSN 1751-8687, Online ISSN 1751-8695

Received 15/12/2017, Accepted 20/04/2018, Revised 08/04/2018, Published 27/04/2018

Concerning multi-source oscillation scenes, an oscillation centre identification method based on the variation trend of bus frequency is proposed. First, according to the amplitude and phase relationship between voltage and current at any point in the system, the functional expression of the frequency of voltage and current is derived. Then, the variation trend and distribution of the frequency of voltage and current in multi-source oscillation scenes are analysed. On this basis, the relationship between system frequency distribution and the oscillation centre and desynchronising centre is revealed, and an oscillation centre identification scheme for multi-source oscillation scenes is put forward. Simulation results based on DIgSILENT/PowerFactory demonstrate that the proposed scheme can effectively identify the location of oscillation centre in multi-source oscillation system.

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Oscillation centre identification method based on frequency characteristics in multi-source oscillation scenes

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