Transient behaviour of salient-pole synchronous machines with internal stator winding faults

Wang, X.H.; Sun, Yuning; Ouyang, Bo; Wang, W.J.; Zhu, Z. Q.; Howe, D.

doi:10.1049/ip-epa:20020068

Cited by 51 publications

(28 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Three Gorges Power Station will be one of the largest power stations in the world. Research results illustrated that the employed schemes including the differential protection scheme, the split-phase transverse differential protection scheme and the unit transverse differential protection scheme would have a blind zone [1][2]. For example, for the short circuit happened between 81.25% (from neutral) and 89.58% in the first branch in phase A (termed as A 1 ), the transient currents are very small, all schemes are unable to detect.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

The adaptive unit transverse differential protection based on the fault contributed current

Tai

Wang

2007

Int Trans Elec Energy Syst

View full text Add to dashboard Cite

SUMMARYA new adaptive unit transverse differential protection based on the fault contributed zero-sequence current for the generator is introduced in this paper. The performance of the conventional unit transverse differential protection is usually greatly affected by the unbalanced current. To overcome this disadvantage, the fault contributed zero-sequence current is applied to remove the influence of the pre-fault current. At the same time, analysis results show that the unbalanced current always present the linear relationship with the stator current. According to that, the proposed scheme can change the setting value adaptively, which improves the protection sensitivity for the generator light internal fault. For the external fault, the scheme can enhance the protection reliability because it ensures a high restraint current. The new scheme is developed and the practical implementation of the protection equipment is also demonstrated. The test results show that the proposed approach is successful in detecting the generator internal fault, and could have high sensitivity and selectivity.

show abstract

Section: Introductionmentioning

confidence: 99%

“…Because the large generator has large size and great cost, the various faults such as the internal fault may cause serious results to the machine. Thus, the requirements need to be fulfilled are stringent for the generator protective systems [1][2].…”

Section: Introductionmentioning

confidence: 99%

The adaptive unit transverse differential protection based on the fault contributed current

Tai

Wang

2007

Int Trans Elec Energy Syst

View full text Add to dashboard Cite

show abstract

“…The calculation of the winding inductances has been described in detail in [15] and [16]. It is worth mentioning that for a salient-pole generator, the self-and mutual-inductance between segments of the stator winding, and the mutual-inductance between the stator and rotor windings are dependent on the angular position of the rotor; while the self-and mutual-inductances of the rotor windings are independent of the angular position of the rotor.…”

Section: Establishment Of State Equationsmentioning

confidence: 99%

“…The method has been verified by experiments, and shown to be capable of analyzing the steady-state and transient behavior of internal faults in the stator windings of synchronous generators [16], [17] since it accounts for the actual disposition of the windings and accurately calculates the harmonics in the air-gap field. However, since the distributed capacitances of the windings to ground are neglected, while the grounding method for the neutral is not considered, ground faults could not be simulated and analyzed.…”

mentioning

confidence: 99%

Improved Transient Simulation of Salient-Pole Synchronous Generators With Internal and Ground Faults in the Stator Winding

Xiangheng

Wang

et al. 2005

IEEE Trans. On Energy Conversion

Self Cite

View full text Add to dashboard Cite

ReuseUnless indicated otherwise, fulltext items are protected by copyright with all rights reserved. The copyright exception in section 29 of the Copyright, Designs and Patents Act 1988 allows the making of a single copy solely for the purpose of non-commercial research or private study within the limits of fair dealing. The publisher or other rights-holder may allow further reproduction and re-use of this version -refer to the White Rose Research Online record for this item. Where records identify the publisher as the copyright holder, users can verify any specific terms of use on the publisher's website. TakedownIf you consider content in White Rose Research Online to be in breach of UK law, please notify us by emailing eprints@whiterose.ac.uk including the URL of the record and the reason for the withdrawal request. Index Terms-Ground fault, internal fault, multiloop circuit method, salient-pole generator.

show abstract

“…Alternatively in [9][10][11], the synchronous machine is assumed to be formed from several electric loops and the inductances are calculated on a coil-by-coil basis. The capacitive effect in modeling of the faulted machine is also considered in [12] and mutual inductance of faulted machine was precisely calculated by use of winding function approach in [13].…”

Section: Introductionmentioning

confidence: 99%

A Faulty Synchronous Machine Model for Efficient Interface with Power System

Koochaki¹

2015

Journal of Electrical Engineering and Technology

View full text Add to dashboard Cite

-This paper presents a new approach for simulating the internal faults of synchronous machines using distributed computing and Large Change Sensitivity (LCS) analysis. LCS analysis caters for a parallel solution of 3-phase model of a faulted machine within the symmetrical componentbased model of interconnected network. The proposed method considers dynamic behavior of the faulty machine and connected system and tries to accurately solve the synchronous machine's internal fault conditions in the system. The proposed method is implemented in stand-alone FORTRAN-based phasor software and the results have been compared with available recordings from real networks and precisely simulated faults by use of the ATP/EMTP as a time domain software package. An encouraging correlation between the simulation results using proposed method, ATP simulation and measurements was observed and reported. The simplified approach also enables engineers to quickly investigate their particular cases with a reasonable precision.

show abstract

Transient behaviour of salient-pole synchronous machines with internal stator winding faults

Cited by 51 publications

References 16 publications

The adaptive unit transverse differential protection based on the fault contributed current

The adaptive unit transverse differential protection based on the fault contributed current

Improved Transient Simulation of Salient-Pole Synchronous Generators With Internal and Ground Faults in the Stator Winding

A Faulty Synchronous Machine Model for Efficient Interface with Power System

Contact Info

Product

Resources

About