PWM Harmonic Signature-Based Islanding Detection for a Single-Phase Inverter With PWM Frequency Hopping

被引:18
作者
Colombage, Kalhana [1 ]
Wang, Jiabin [2 ]
Gould, Chris [2 ]
Liu, Chaohui [2 ]
机构
[1] Malvern Instruments Ltd, Malvern WR14 1XZ, Worcs, England
[2] Univ Sheffield, Dept Elect & Elect Engn, Sheffield S1 3JD, S Yorkshire, England
关键词
Frequency hopping; passive islanding detection; pulse width modulation (PWM) harmonic signature; DISTRIBUTED-GENERATION; PHOTOVOLTAIC SYSTEMS; SHIFT METHOD; PREVENTION;
D O I
10.1109/TIA.2016.2611671
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Distributed generation (DG) has gained popularity in recent years due to the increasing requirement for renewable power sources. A problem that exists with DG systems is the islanding of DG units that creates safety issues for personnel as well as the potential for damage to utility infrastructure. Therefore, islanding detection methods are utilized to mitigate the risk of islanded operation of DG units. A new passive method of islanding detection based on the signature of the pulse width modulation voltage harmonics is proposed. The viability of the algorithm is investigated with the use of an analytical and time-domain model of the inverter and further validated with experimental results. Furthermore, an extension of the detection scheme is proposed for use in multi-inverter scenarios composed of adaptive frequency hopping to eliminate unwanted tripping.
引用
收藏
页码:411 / 419
页数:9
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