Hybrid power quality conditioner for co-phase power supply system in electrified railway

Dai, Ningyi; Lao, Keng-Weng; Wong, Man-Chung; Wong, Chi-Yin

doi:10.1049/iet-pel.2011.0292

Cited by 75 publications

(47 citation statements)

References 14 publications

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“…Compared with pure MSVC compensation, it is indicated that 29.8% of MSVC capacity can be reduced in the complete compensation strategy, and 64 % of MSVC capacity can be reduced in the optimization compensation strategy. The cost of RPC is about 8 times as the cost of MSVC [15], thus the EHCS compensation strategy is more economical than pure RPC compensation.…”

Section: Simulation Resultsmentioning

confidence: 99%

“…Because RPC costs about 8 times MSVC per unit capacity [15], a small capacity RPC is used to realize economical in this paper. The extreme environment is analyzed, namely, the active load current on ac side reaches the maximum, the active load current on bc side is zero, so that RPC cannot balance the active current load on both sides.…”

Section: Minimum Capacity Of Ehcs 41 Minimum Capacity Of Msvc In Thementioning

confidence: 99%

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Optimal electromagnetic hybrid negative current compensation method for high-speed railway power supply system

Yuan

Zhong

Zhang

et al. 2016

J. Mod. Power Syst. Clean Energy

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To achieve economical compensation for the huge-capacity negative sequence currents generated by high-speed railway load, an electromagnetic hybrid compensation system (EHCS) and control strategy is proposed. The EHCS is made up of a small-capacity railway static power conditioner (RPC) and a large-capacity magnetic static var compensator (MSVC). Compared with traditional compensation methods, the EHCS makes full use of the SVC's advantages of economy and reliability and of RPC's advantages of technical capability and flexibility. Based on the idea of injecting a negative sequence, the compensation principle of the EHCS is analyzed in detail. Then the minimum installation capacity of an EHCS is theoretically deduced. Furthermore, a constraint optimization compensation strategy that meets national standards, which reduces compensation capacity further, is proposed. An experimental platform based on a digital signal processor (DSP) and a programmable logic controller (PLC) is built to verify the analysis. Simulated and experimental results are given to demonstrate the effectiveness and feasibility of the proposed method.

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Section: Simulation Resultsmentioning

confidence: 99%

Section: Minimum Capacity Of Ehcs 41 Minimum Capacity Of Msvc In Thementioning

confidence: 99%

Optimal electromagnetic hybrid negative current compensation method for high-speed railway power supply system

Yuan

Zhong

Zhang

et al. 2016

J. Mod. Power Syst. Clean Energy

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“…To reduce the installation cost, the UPQC is connected to load connected phase via LC branch and coupling transformer to the other phase [117] . In these types of conditioners, passive filters are used to compensate low order harmonics and active filters for high order harmonics.…”

Section: Technical and Economic Considera-tionmentioning

confidence: 99%

Power Quality Conditioners for Railway Traction—a Review

Gunavardhini¹,

Chandrasekaran²

2016

Automatika

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Original scientific paperRailway traction is a more stochastic heavy load connected system. Due to the usage of ac-dc converters and ac-ac converters, the various power quality issues become the major problems in the electric system. This paper presents a review on power quality conditioners suitable for Railway traction based on the configuration, components involved and on the technical and economic considerations. More than 120 publications are listed in the reference for quick review. Poboljšanje kvalitete snage za željezničke sustave -pregled istraživanja. Željeznički električni sustav je prilično stohastički sustav s velikim opterečenjem. Zbog korištenja AC/DC i AC/AC pretvarača, problemi s kvalitetom isporučene energije predstavljaju glavne probleme električnih sustava. U ovome radu predstavljen je pregled područja vezano uz poboljšanje kvalitete energije za željezničke sustave ovisno o konfiguraciji, komponentama uključenim te o tehničkim i ekonomskim aspektima. Više od 120 radova navedeno je u popisu literature.Ključne riječi: metode za poboljšanje kvalitete energije, kompenzacija haromonika i reaktivne snage, aktivni filtri, šant hibridni filtar, kvaliteta energije

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“…In order to achieve these goals, the compensating current of the HRPC is deduced, which has been explained in detail in [18]. The required compensating currents of the HRPC are given in (6).…”

Section: Basic Operational Principle Of the Hrpcmentioning

confidence: 99%

A hybrid railway power conditioner for traction power supply system

Dai

Lao

Wong

2013

2013 Twenty-Eighth Annual IEEE Applied Power Electronics Conference and Exposition (APEC)

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Co-phase traction power supply system was proposed for supplying the long-distance electrified railway without neutral sections. However, a railway power compensator (RPC) needs to be installed in each substation together with the traction transformer for improving the power quality. The RPC is mainly constructed by a back-to-back converter, which can reduce the unbalance currents by active power transfer and compensate reactive current and harmonics at the same time. A hybrid railway power conditioner (HRPC) is proposed for the co-phase traction power supply system in this paper. The HRPC uses a LC coupling branch between the converter and the traction supply. It is able to operate at a lower converter rating for achieving the same performance compared with conventional RPC. As a result, the initial cost and operational losses are reduced. The design of the LC coupling impedance and the DC bus voltage of the HRPC is focused on in this paper based on the mathematical models. The control system is implemented. Simulation results are provided and comparison with RPC is also given. Experimental results are provided to show the validity of the HRPC.

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Hybrid power quality conditioner for co-phase power supply system in electrified railway

Cited by 75 publications

References 14 publications

Optimal electromagnetic hybrid negative current compensation method for high-speed railway power supply system

Optimal electromagnetic hybrid negative current compensation method for high-speed railway power supply system

Power Quality Conditioners for Railway Traction—a Review

A hybrid railway power conditioner for traction power supply system

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