Power-Quality Impact Assessment for High-Speed Railway Associated With High-Speed Trains Using Train Timetable—Part II: Verifications, Estimations and Applications

Hu, Haitao; He, Zhengyou; Ke, Wang; Ma, Xiaolan; Gao, Shibin

doi:10.1109/tpwrd.2015.2472961

Cited by 49 publications

(22 citation statements)

References 14 publications

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“…Compared with the harmonic pollution of TPSS, the background harmonic content of the connected power system is usually negligible. However, the loworder harmonic produced by trains decreases remarkably with the improvement of tractive converter [7], which means that the effect of background harmonics can no longer be ignored in the process of quantifying its harmonic impact [8]- [9].…”

Section: B Literature Reviewmentioning

confidence: 99%

Measurement-Based Compartmental Modeling of Harmonic Sources in Traction Power-Supply System

Gao

et al. 2017

IEEE Trans. Power Delivery

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 Harmonic pollution of traction power supply system (TPSS) has become a vital concern for its adverse impacts on the tractive drive system of the train and power quality issues of both TPSS and connected power system. Harmonic modeling is the precondition to evaluate the harmonic pollution for TPSS. This paper systematically discusses main harmonic sources in TPSS as well as their characteristics based on accurate field measurement. Moreover, the background harmonic voltage of the connected utility system and the harmonic of the train are compartmentalized and modeled with consideration of the stochastic and statistical features. This paper studies the background harmonic voltage with time slicing and probability statistics technique. Meanwhile，the harmonic of the train is described with Norton equivalent model, which considers the interaction between harmonic voltage and harmonic current. Moreover, the influence of the working conditions and power output on the harmonic distribution is mentioned in the low-order harmonic modeling of the train. The results suggests the proposed methods can effectively restore the distribution and characteristics of the harmonics in TPSS.Index Terms-harmonic modeling, traction power supply system, stochastic and statistical features, compartmental modeling, field data.

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Section: B Literature Reviewmentioning

confidence: 99%

Measurement-Based Compartmental Modeling of Harmonic Sources in Traction Power-Supply System

Gao

et al. 2017

IEEE Trans. Power Delivery

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“…Generally, the protective devices used in distribution systems can be classified into two categories: The ones with an instantaneous response and the ones with a delayed response [26,27]. The former can isolate downstream failures immediately subject to an operation probability, and the latter includes switches, and can be used to reduce the restoration time when required.…”

Section: Bottom-up Recursive Principlementioning

confidence: 99%

Recursive Method for Distribution System Reliability Evaluation

Wang

Zhang

Li³

et al. 2018

Energies

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This paper proposes a novel hybrid recursive method for distribution system reliability evaluation to deal with the computational limit and low-efficiency problem which exist in previously developed techniques as the system becomes larger. This method includes a bottom-up process and a top-down process, which are developed on the basis of a recursive principle, and the synthesis of both processes yield the reliability performance of each bus of the system. The bottom-up process considers the effects of downstream failures on upstream customers, and the top-down process considers the effects of upstream failures on downstream customers. In addition, a novel switch zone concept is defined and introduced into the bottom-up recursive process to save the computation cost. Besides, section technique (ST) and shortest path method (SPM) are employed to effectively simplify the recursive path and thus, the computation efficiency can be improved. The most significant feature of the proposed method over ST, SPM, failure mode and effect analysis (FMEA) is that it provides a more generalized equivalent approach to maximally simplify the network for reliable evaluation irrespective of the network topology. The effectiveness of the proposed method has been validated through comprehensive tests on Roy Billinton test system (RBTS) bus 6 and a practical-sized distribution system in China.

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“…The voltage unbalance (VU) problem has been a severe issue in practical engineering throughout Europe and China [1][2][3][4]. It causes serious grid operation accidents in areas with a vulnerable grid structure [5][6][7], especially in mid-western China. For example, Sanmenxia wind farm was cut off due to the operation of the Zhengzhou-Xi'an HSR [8,9].…”

Section: Introductionmentioning

confidence: 99%

VU limit pre‐assessment for high‐speed railway considering a grid connection scheme

Chen

Tian

et al. 2019

IET Generation, Transmission & Distribution

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Single-phase 25-kV AC traction power supply systems (TPSSs) are widely used in high-speed railways (HSRs), leading to an increasingly prominent problem of voltage unbalance (VU) in the power grid. To fairly regulate the system VU level, implementing VU limit pre-assessment is an urgent need. A grid connection scheme, including traction transformer selection and exchange phase connection (EPC) design, is a vital part of TPSS design that obviously affects the voltage unbalance factor (VUF) of power systems. A uniform mathematical model is established using Thevenin's theorem, which reveals the impact of multiple grid connection schemes on the VU propagation behaviour of a three-phase grid. Afterwards, under the requirements of IEC/TR 61000-3-13, an improved VU limit pre-assessment process is proposed, which correlates mapping between the grid connection scheme and VU limit. The unbalance compensation calculation is given, adopting the allocation limit; furthermore, the optimal design of the grid connection scheme with minimized compensation capacity as an object is presented. The correctness of the model and the rationality of the pre-assessment process are verified by a case study.

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Power-Quality Impact Assessment for High-Speed Railway Associated With High-Speed Trains Using Train Timetable—Part II: Verifications, Estimations and Applications

Cited by 49 publications

References 14 publications

Measurement-Based Compartmental Modeling of Harmonic Sources in Traction Power-Supply System

Measurement-Based Compartmental Modeling of Harmonic Sources in Traction Power-Supply System

Recursive Method for Distribution System Reliability Evaluation

VU limit pre‐assessment for high‐speed railway considering a grid connection scheme

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