Topic
Fault indicator
About: Fault indicator is a research topic. Over the lifetime, 10057 publications have been published within this topic receiving 143482 citations. The topic is also known as: FCI & power line fault indicator.
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TL;DR: In this paper, a new fault diagnostic technique applied to switched reluctance motor drives, based on the analysis of the power converter supply current, is presented, where the measured amplitude of the dc bus current differs from its expected amplitude, assuming normal operating conditions.
Abstract: This paper presents a new fault diagnostic technique applied to switched reluctance motor drives, based on the analysis of the power converter supply current. A fault is detected when the measured amplitude of the dc bus current differs from its expected amplitude, assuming normal operating conditions. The information about phase currents amplitudes and the control commands of all power switches permit to easily estimate the amplitude of the power converter supply current, since an asymmetric bridge converter is used. Simulation and experimental results are presented. Open- and short-circuit fault occurrences in the converter power switches are considered and analyzed. The proposed technique can early detect these fault occurrences and can also identify the affected motor phase. In almost all situations, the faulty element is also identified. An early fault diagnosis, with an accurate fault identification, is of a paramount importance since it permits the early adoption of fault-tolerant procedures that minimize the fault impact on the machine operation.
78 citations
01 Jun 1989
TL;DR: The distinct features of the proposed fault simulation method consist in the application of parallel processing of patterns at all stages of the calculation procedure, its versatility to account for both robust and non-robust detection of path delay faults, and its capability of efficiently maintaining large numbers of path faults to be simulated.
Abstract: This paper presents an accelerated fault simulation approach for path delay faults. The distinct features of the proposed fault simulation method consist in the application of parallel processing of patterns at all stages of the calculation procedure, its versatility to account for both robust and non-robust detection of path delay faults, and its capability of efficiently maintaining large numbers of path faults to be simulated.
77 citations
TL;DR: In this paper, a hierarchical and active fault location method was proposed for neutral point non-effectively grounded loop distribution network. But the fault position was not determined at the first time.
77 citations
TL;DR: In this article, a novel wavelet based approach for fault location using voltage transient waveforms in power distribution systems is presented, which includes two main stages: first, the approximate location of the fault or fault section is determined using a new algorithm with discrete wavelet transform, and the difference between arriving times of transient components in different measurement units is used for this purpose.
77 citations
TL;DR: This paper describes the fault location algorithm using neuro-fuzzy systems in combined transmission lines with underground power cables, which shows excellent results for discrimination of fault section and calculation of fault location.
77 citations