Summary of the &amp;#x201C;Guide for the Protection of Shunt Reactors&amp;#x201D; IEEE Std. C37.109-2006

Stephan, Khaled; Mysore, P.; Appleyard, J.; Bajpai, M.; Chano, S.; Chaudhary, A.; Hedding, Roger; Henville, C.F.; Miller, D.; Rebbapragada, V.; Stephens, J.E.

doi:10.1109/psce.2009.4839966

Cited by 3 publications

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“…They can be modelled as double-winding saturable transformers. The overall topology of the TMCEM satisfies all the (1) to (11).…”

Section: Figurementioning

confidence: 97%

“…Based on the winding voltage (1) to (3) and the MP fall (9) to (11) of each magnetic circuit, the TMCEM of SRAW can be constructed, as illustrated in Figure 4. T 1 represents the main iron core corresponding to magnetic circuit 1 shown in Figure 2, which can be modelled as a saturable reactor (or a saturable transformer with an open secondary side).…”

Section: Figurementioning

confidence: 99%

“…In the field of detecting inner‐turn faults, the most extensively employed protection scheme for SRAW is the zero‐sequence power directional protection, incorporating current transformers (CTs) and potential transformers (PTs) that are situated on the grid side [9, 10]. To enhance sensitivity for detecting faults in the grid‐unconnected winding, the negative‐sequence power directional protection has been proposed [11, 12]. However, the grid‐side measurements of fault characteristics are inherently limited by the weak coupling within SRAW, leading to a lack of sensitivity in detecting inner‐turn faults.…”

Section: Introductionmentioning

confidence: 99%

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Magnetic circuit decomposition model and novel inner‐turn fault protection scheme for shunt reactor with auxiliary windings

Zheng

Tian

Meng

2023

IET Generation Trans & Dist

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Shunt reactor with auxiliary windings (SRAW) can compensate inductive reactive power for long‐distance transmission lines and supply steady power for low‐voltage devices on offshore platforms. The operation characteristics of SRAW can be commonly described by the air‐core transformer equivalent model. However, this model can only make an approximate simulation of the external characteristics of SRAW, and cannot reflect the actual electrical features inside the SRAW. To solve this problem, the authors propose a three‐segment magnetic circuit equivalent model (TMCEM) of SRAW based on the magnetic circuit decomposition method. This model can accurately describe the coupling relationship inside SRAW and can be used for the analysis of internal fault characteristics. Furthermore, through the fault analysis utilizing TMCEM, a novel protection scheme of SRAW based on virtual magnetizing differential current is proposed for the detection of the inner‐turn fault in SRAW. This protection scheme has high sensitivity and can effectively identify the inner‐turn faults without measuring voltages. By testing the physical model of SRAW, the effectiveness of the TMCEM and the proposed protection scheme against inner‐turn fault has been confirmed.

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“…They can be modelled as double-winding saturable transformers. The overall topology of the TMCEM satisfies all the (1) to (11).…”

Section: Figurementioning

confidence: 97%

Section: Figurementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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