Shunt Capacitor Installation for Single Phase Railway Service

Brown, H. F.; Witzke, R. L.

doi:10.1109/t-aiee.1948.5059669

Cited by 4 publications

(5 citation statements)

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“…Referring back to (8), it can be observed that under a certain operation voltage rating kinvaLC, as the coupled impedance (XLCa) is different, the compensation range/capability (r, hs, hc) in which satisfactory compensation performance can provided will also be different.…”

Section: B Effect Of Railway Hpqc Coupled Impedance On Compensation mentioning

confidence: 99%

“…Supposing that the locomotive load power is unchanged at PFL=0.85 during variations such that hc=hs=1, a graph is plotted using Matlab according to (8) in Fig. 7.…”

Section: B Effect Of Railway Hpqc Coupled Impedance On Compensation mentioning

confidence: 99%

“…7. A matlab plot is constructed according to (8) and (10) to show the variation of compensation range when the Railway HPQC coupled impedance ratio mLCa is different. This also shows the compensation capability.…”

Section: B Effect Of Railway Hpqc Coupled Impedance On Compensation mentioning

confidence: 99%

“…Various power quality compensation devices have been proposed for traction power. Conventionally, compensators such as shunt capacitive bank, passive filters and static var compensator (SVC) are used [6][7] [8]. For instance, the usage of shunt capacitor for railway locomotive power was presented in 1948 in [8].…”

Section: Introductionmentioning

confidence: 99%

“…However, their dynamic performance is poor. Compensators based on active components are therefore proposed [8] [9]. They have better dynamic performance and is widely used.…”

Section: Introductionmentioning

confidence: 99%

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Analysis in the Effect of Co-phase Traction Railway HPQC Coupled Impedance on Its Compensation Capability and Impedance-Mapping Design Technique Based on Required Compensation Capability for Reduction in Operation Voltage

Lao

Wong

Dai

et al. 2017

IEEE Trans. Power Electron.

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Railway hybrid power quality conditioner (HPQC) is one of the newly proposed devices for power quality compensation in co-phase high speed traction power supply for its benefit in reduction of operation voltage over conventional railway power quality conditioner (RPC). However, initial Railway HPQC design is developed based on minimum operation voltage at pre-defined fixed rated load. This may not be applicable in practical condition when load varies. In order to solve this problem, a Railway HPQC design with increased operation voltage has been investigated to enhance the compensation capability. Nevertheless, the compensation capability is even larger than that required during load variations such that the operation voltage is higher than it actually requires. A lower operation voltage can actually be used to provide required compensation capability when the coupled impedance is different from the designed rated one. In this paper, the effect of coupled impedance on the compensation capability in Co-phase Railway HPQC is being analyzed. An impedance-mapping design technique based on required compensation capability is then proposed based on the analysis. The proposed method is advantageous for lower operation voltage and smaller capacitance value. The effectiveness of impedance-mapping technique is verified via simulation and experimental results.Index Terms-Railway hybrid power quality conditioner, high-speed railway, power quality, co-phase traction power supply, impedance mapping Manuscript

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Section: B Effect Of Railway Hpqc Coupled Impedance On Compensation mentioning

confidence: 99%

“…Supposing that the locomotive load power is unchanged at PFL=0.85 during variations such that hc=hs=1, a graph is plotted using Matlab according to (8) in Fig. 7.…”

Section: B Effect Of Railway Hpqc Coupled Impedance On Compensation mentioning

confidence: 99%

Section: B Effect Of Railway Hpqc Coupled Impedance On Compensation mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…However, their dynamic performance is poor. Compensators based on active components are therefore proposed [8] [9]. They have better dynamic performance and is widely used.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations