Higher Harmonics Resonance on AT Feeding Circuit and Countermeasures to Suppress it.

Mochinaga, Yoshifumi; Hisamizu, Yasuji; Yoshida, Yoshishige; Nakano, Akiyoshi; Matsuhashi, Tokio

doi:10.1541/ieejias.114.978

Cited by 5 publications

(2 citation statements)

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“…9, the harmonic voltage of an AC traction circuit has a low-order harmonic voltage (500 to 1500 Hz) component that expands depending on the conditions of the AC traction circuit and the electric vehicle. 9 In addition, at times, the harmonic voltage includes a few percentages of third-order harmonic voltage because the AC traction circuit is a single phase circuit, as described above. Furthermore, according to Ref.…”

Section: Proposed Simulated Waveform Of Resistive Leakage Currentmentioning

confidence: 99%

Development of a detection device for deteriorated ZnO surge arresters at AC traction substations

Akagi

Tanaka²,

Imamura³

2018

Electrical Engineering Japan

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This paper presents a novel detection device for deteriorated zinc‐oxide (ZnO) surge arresters. It is necessary to understand the state of ZnO surge arresters for AC traction substations under operation. The waveform distortion of leakage currents can be detected through an increase in multiple harmonic currents; therefore, this effect was employed to develop a device for diagnosing damage to the surge arrester. By adopting a Rogowski coil and band‐pass filters, we can obtain more output of the 5th–15th order harmonic currents in comparison with conventional devices. If the threshold value of harmonic elements is exceeded, the lights on the device may light up to indicate the deterioration. The validity of the device was verified by artificial deterioration tests using damaged ZnO elements and a capacitor. This developed device could indicate the soundness of the surge arresters that are in proper working order while being under the influence of feeding voltages, which include harmonic voltages.

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Section: Proposed Simulated Waveform Of Resistive Leakage Currentmentioning

confidence: 99%

Development of a detection device for deteriorated ZnO surge arresters at AC traction substations

Akagi

Tanaka²,

Imamura³

2018

Electrical Engineering Japan

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“…There are a lot of resonance modeling methods for traction network.In paper [4],it established a simplified model for traction network using T-type distributed model. The main traction network model, two-port or four-terminal network [5],[6], [7], is effective in the analysis on single-line railway, but weak when applied to double-track or more wires involved traction network. The model which is often used in the power system is the distributed parameter model, the distributed parameter model uses traveling wave theory, and the simulation is more accurate, but due to the simulation step size is limited, a unit length of distributed parameter model is chosen for a longer length,it's not conducive to the precision analysis of traction network.…”

Section: Introductionmentioning

confidence: 99%

Comparison of Different Models for Higher Harmonics Resonance Analysis Between Traction Networks and High Speed Train

Cao¹,

Liu²,

Liu³

et al. 2016

Proceedings of the 2016 6th International Conference on Machinery, Materials, Environment, Biotechnology and Computer

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With the rapid development of high-speed railway technology, more and more countries enjoy the convenience which travels with high speed train.Most of the high speed train running on the railway use distributed power technology, the converter on the train get power from traction network to supply the traction motors. In the actual line,4-quadrant converter's(4QC) switching actions will inject harmonic into the traction network,while it may lead to the problem of the coupling resonance of the network when the harmonics match with the network's impedance.Therefore,in analysis of practical problems,it plays an important role if the model of the netwoek is accurate. This paper will analyze and have a comparation with the difference and accuracy of three different traction network modeling methods.

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Fiatmome analysis model based on PSCAD/EMTDC for Koman high-speed railway

Lee¹,

Lee²,

Cho³

et al.

2004 Large Engineering Systems Conference on Power Engineering (IEEE Cat. No.04EX819)

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Higher Harmonics Resonance on AT Feeding Circuit and Countermeasures to Suppress it.

Cited by 5 publications

References 0 publications

Development of a detection device for deteriorated ZnO surge arresters at AC traction substations

Development of a detection device for deteriorated ZnO surge arresters at AC traction substations

Comparison of Different Models for Higher Harmonics Resonance Analysis Between Traction Networks and High Speed Train

Fiatmome analysis model based on PSCAD/EMTDC for Koman high-speed railway

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