A shunt capacitor detection method based on intelligent substation

Zhang, Ming; Du, Juan; Chang, Hua; Gao, Bing; Ma, Jing; Xiang, Xiaoqiang

doi:10.1109/ei2.2017.8245399

Cited by 3 publications

(1 citation statement)

References 13 publications

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“…Also, these algorithms can be helpful for condition monitoring of the SCB capacitor units and consequently can result in the reduction of unscheduled outages of SCBs. It must be mentioned that except for some protection schemes that employ per-phase measurements [1], [5] - [7], the conventional unbalance protection functions confront challenges regarding localization of faulty points in SCBs, due to lack of an adequate number of available measurements [4].…”

Section: Introductionmentioning

confidence: 99%

Multi‐criteria protection scheme for online element failure detection in shunt capacitor banks

Goodarzi

Allahbakhshi

Tajdinian

et al. 2020

IET Generation, Transmission & Distribution

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This paper deals with a fault detection investigation of SCBs, and it is focused on the faulty phase detection and the number of faulty capacitor units. Unlike previous methods, the proposed method provides a relay decision making criterion which determine the faulty capacitors, and the number of capacitor failures in case of multiple faulty phase conditions. The proposed algorithm is applied on different wye configurations of SCBs considering different protection designs (i.e., fuseless, internally and externally fused units). Since the detection of capacitor failures in SCBs are based on the fundamental phasor component, there may occur a significant delay in decision making in the case of an external short circuit fault in the power system. The aforementioned condition, which will be mathematically proven, happens due to a capacitor discharge after fault clearance. To deal with this condition, a method is proposed by applying an algorithm, in which the fundamental component of the voltage signal is extracted in one cycle. Performance evaluations associated with the proposed method are provided for different fault conditions, fault locations, and different levels of harmonics and, they are further discussed through the implementation of the proposed method in MATLAB environment.

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Section: Introductionmentioning

confidence: 99%

Multi‐criteria protection scheme for online element failure detection in shunt capacitor banks

Goodarzi

Allahbakhshi

Tajdinian

et al. 2020

IET Generation, Transmission & Distribution

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Online condition monitoring algorithm for element failure detection and fault location in double wye shunt capacitor banks

Goodarzi¹,

Allahbakhshi²

2022

International Journal of Electrical Power & Energy Systems

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Shunt Capacitor Bank Fault Detection and Localization Using Sub-Cycle Algorithm

Tajdinian

Behdani

Goodarzi

et al. 2022

2022 IEEE Electrical Power and Energy Conference (EPEC)

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Fast internal detection and location in Shunt Capacitor Banks (SCBs) can lead to the prevention of damages to other SCBs' elements and consequently avoid undesirable performance and effects in power system operation. This paper targets the performance of phasor-based algorithms of failure detection and fault location of SCBs. Being dependent on the fundamental phasor components which usually are calculated based on the Discrete Fourier Transform (DFT), the failure detection and fault location algorithms suffer from almost onecycle delay. This paper provides sub-cycle phasor estimation based on the least-square technique. The proposed algorithm is evaluated for different configurations of SCBs considering different fuse protection designs. The proposed method provides a criterion for relay decision-making in the case of multiple faulty phases condition. The proposed method is designed to monitor and detect consecutive failures based on the existing data of commercial relays. Performance evaluations are conducted under different circumstances namely voltage unbalance conditions and multiple internal fault locations.

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A shunt capacitor detection method based on intelligent substation

Cited by 3 publications

References 13 publications

Multi‐criteria protection scheme for online element failure detection in shunt capacitor banks

Multi‐criteria protection scheme for online element failure detection in shunt capacitor banks

Online condition monitoring algorithm for element failure detection and fault location in double wye shunt capacitor banks

Shunt Capacitor Bank Fault Detection and Localization Using Sub-Cycle Algorithm

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