Computation of sensitivity-based islanding detection parameters for synchronous generators

被引:8
作者
Rabuzin, Tin [1 ]
Hohn, Fabian [1 ]
Nordstrom, Lars [1 ]
机构
[1] KTH Royal Inst Technol, Div Elect Power & Energy Syst, Stockholm, Sweden
关键词
Distributed generation; Islanding detection; Kalman filter; Least squares; Sensitivity computation; PROTECTION; SCHEMES; STORAGE;
D O I
10.1016/j.epsr.2020.106611
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
Significant penetration levels of distributed energy resources increase the likelihood of continued operation of a power system island after an islanding event. It is important to employ adequate islanding detection methods to mitigate the adverse effects of unintentional islanding and possibly transition to a safe islanded mode of operation. This paper focuses on the computational aspects of a class of methods that utilizes a change in the sensitivity parameters as an indicator of islanding events. It is shown that the inherent properties of the measurement signals cause numerical issues for the computation of the sensitivity parameters. The paper also analyses three algorithms for estimation of the coefficients that overcome the numerical issues. The performance of the algorithms has been demonstrated using synthetically generated measurements. In addition, the data from field experiments has been used to further illustrate the practical viability of the algorithms.
引用
收藏
页数:6
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