Type testing a 2000 MW turbogenerator

Sedlazeck, K.; Richter, C.; Strack, S.; Lindholm, Stefan; Pipkin, Jennifer; Fu, Feng; Humphries, B.T.A.; Montgomery, L.W.

doi:10.1109/iemdc.2009.5075247

Cited by 3 publications

(3 citation statements)

References 1 publication

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“…Wound-field synchronous machines (WFSMs) are the preferred choice in power generation applications ranging from few kVA to few GVA [1]. The main reasons are: 1) the possibility to control the flow of reactive power (both absorption and production); 2) the intrinsic flux regulation capability; 3) the reliability and resilience to short-circuit faults with no demagnetization risks; 4) the high efficiency; 5) and the superior dynamics during electro-mechanical transients.…”

Section: Introductionmentioning

confidence: 99%

Excitation System Technologies for Wound-Field Synchronous Machines: Survey of Solutions and Evolving Trends

et al. 2019

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Wound-field synchronous machines (WFSMs) are included in the majority of large power generating units and special high-power motor drives, due to their high efficiency, flexible field excitation and intrinsic flux weakening capability. Moreover, they are employed in a wide range of high-end solutions in the low-to-medium power range. This contribution presents a comprehensive survey of classical and modern methods and technologies for excitation systems (ESs) of WFSMs. The work covers the fundamental theory, typical de-excitation methods and all the modern excitation equipment topologies in detail. It also includes a description of the state-of-the-art and the latest trends in the ESs of wound-field synchronous motors and generators. The purpose of the paper is to provide a useful and up-to-date reference for practitioners and researchers in the field.

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Section: Introductionmentioning

confidence: 99%

Excitation System Technologies for Wound-Field Synchronous Machines: Survey of Solutions and Evolving Trends

et al. 2019

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“…When the temperature of any part of a rotor surface reaches the maximum allowed value of continuous operation, the generator has the capability to run for a long period of time in this situation. However, there is no longterm method of measurement and control for the rotor surface temperature; thus, the only suitable solution is experiments for a steady negative-sequence capability test to determine the limit of the negative-sequence current [16][17][18][19][20][21]. Experimental results of the steady negative-sequence capability and the unbalanced operation limitation standards of various generators are listed in Tables 5 and 6, respectively.…”

Section: Negative-sequence Component Analysismentioning

confidence: 99%

Negative-sequence Component Analysis of an AP1000 Nuclear Turbo-generator in an Internal Short-circuit Condition

Guo

Gao

et al. 2015

Electric Power Components and Systems

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“…Reference presents the dynamic analysis of eddy currents and losses of a synchronous generator and a new calculation method based on a lumped circuitry. The test results of eddy current distribution, loss distribution and resulting temperature distribution are calculated and compared in . At present, the finite element method is often used to calculate the negative‐sequence losses and rotor heating.…”

Section: Introductionmentioning

confidence: 99%

Improvement of the transient negative-sequence rating formula for large generators based on the negative-sequence current component

Guo

et al. 2015

Int. Trans. Electr. Energ. Syst.

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Summary This paper proposes an improved transient negative‐sequence calculation formula for a large‐capacity nuclear power generator system under unbalanced network conditions. Because of the disadvantages of traditional transient negative‐sequence ratings, I2*2 t is concluded to be inadequate for rating the generator imbalance capability. In fact, many factors, such as the possible fault asymmetry, the duration of the fault and non‐periodic components, should also be considered when rating a generator. According to the inherent relation between rotor heating and generator imbalance capability, the non‐periodic component is added to the improved transient negative‐sequence formula. In this paper, an AP1000 nuclear turbo‐generator was examined as a model to systematically analyse the electromagnetic properties and generator transient negative‐sequence capability affected by different types of typical short circuits. A comprehensive comparison based on accident examples, experimental results and extensive simulations shows that the improved transient negative‐sequence formula not only significantly enhances the assessment accuracy of large‐capacity generator imbalance capability but also provides a theoretical reference for the related research of large‐capacity generator systems. Copyright © 2015 John Wiley & Sons, Ltd.

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Type testing a 2000 MW turbogenerator

Cited by 3 publications

References 1 publication

Excitation System Technologies for Wound-Field Synchronous Machines: Survey of Solutions and Evolving Trends

Excitation System Technologies for Wound-Field Synchronous Machines: Survey of Solutions and Evolving Trends

Negative-sequence Component Analysis of an AP1000 Nuclear Turbo-generator in an Internal Short-circuit Condition

Improvement of the transient negative-sequence rating formula for large generators based on the negative-sequence current component

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