Control compensation system and control method of quality of electric energy of magnetic suspension train

A technology for maglev trains and compensation systems, applied in reactive power adjustment/elimination/compensation, active power filtering, AC networks to reduce harmonics/ripples, etc., can solve the impact of passive filter grid background harmonics and other issues to achieve the effect of improving power quality

Inactive Publication Date: 2011-03-16
SHANGHAI MAGLEV TRANSPORTATION DEVELOPMENT CO LTD +1
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Problems solved by technology

[0006] The power quality control and compensation system and control method of the maglev train provided by the present invention realize the control of the power quality of the

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  • Control compensation system and control method of quality of electric energy of magnetic suspension train
  • Control compensation system and control method of quality of electric energy of magnetic suspension train
  • Control compensation system and control method of quality of electric energy of magnetic suspension train

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Embodiment Construction

[0065] based on the following Figure 1 to Figure 6 , specifically explain the preferred embodiment of the present invention.

[0066] Such as figure 1 Shown is a kind of maglev train power quality control compensation system provided by the present invention, the compensation system includes a passive filter bank 101, and also includes an active power filter connected in series with the passive filter bank 101 through a transformer 102 103 , the transformer 102 is further connected in parallel with a bypass inductor L, and the system further includes a high-order passive filter 104 connected in parallel with the passive filter bank 101 and the active power filter 103 .

[0067] The passive filter bank 101 includes parallel 5th order passive filter, 7th order passive filter, 11th order passive filter, and 13th order passive filter.

[0068] The active power filter 103 and the transformer 102 constitute the active part, and the passive filter bank 101 constitutes the passive ...

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Abstract

The invention relates to a control compensation system of quality of electric energy of a magnetic suspension train, which comprises a passive filter bank and an active power filter which is connected with the passive filter bank in series through a transformer; a bypass inductor is also connected on the transformer in parallel; and the system also comprises a high-order passive filter which is connected with the passive filter bank and the active power filter in parallel. The active power filter is controlled into a reverse harmonic current source to enable the fundamental reactive current to mainly pass through the inductor, the transformer and the inductor reduce the capacity of the active power filter, the active power filter and the passive filter bank together filter the harmonics, and the high-order passive filter mainly filters the high-order harmonics which can not be filtered by the active power filter and the passive filter bank. The compensation system is connected to the 20kV side of a bus in a tractive power supply system of a high-speed magnetic suspension train to shorten the distance between a compensation point and a point of common coupling (PCC), thereby shortening the length of a coupling line, further weakening the amplification effect on harmonics and voltage fluctuation by the circuit, and improving the quality of electric energy.

Description

[0001] technical field [0002] The invention relates to a power quality control and compensation system and a control method for a maglev train. Background technique [0003] During normal operation, high-speed maglev trains absorb energy from the grid, and generate huge amounts of energy during braking. The maglev high-speed train traction power supply system contains a large number of high-power conversion modules (high-power rectifiers, inverters) and many other nonlinear components (transformers, etc.), which continuously generate variable frequency and voltage (VVVF) according to the speed of the train during operation. The current may bring uncertainty in power flow and substandard power quality, which will impact the power grid and have a certain impact on the safe and stable operation of the power grid and trains. [0004] The traditional treatment method is to use a parallel tuned passive filter, which is easily affected by the background harmonics of the power gr...

Claims

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Application Information

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IPC IPC(8): H02J3/01H02J3/18
CPCY02E40/22Y02E40/40Y02E40/20
Inventor 程浩忠史黎明王霄桦曹祥王志冰周悦熊以旺徐俊何吉彪龚小雪
Owner SHANGHAI MAGLEV TRANSPORTATION DEVELOPMENT CO LTD
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