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Comprehensive negative sequence and harmonic compensating system of electrified high-speed railway

A comprehensive compensation, high-speed railway technology, applied in electrical components, circuit devices, AC network circuits, etc., can solve the problems of high voltage and current level requirements, complex structure, high cost, etc., to improve the harmonic suppression effect, reduce cost effect

Inactive Publication Date: 2009-10-28
HUNAN UNIV +1
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the voltage level of the three-phase side is as high as 110kV or 220kV, DSTATCOM needs to be designed as a series multiple structure, the structure is relatively complex, and the voltage and current levels of power electronic devices are high, resulting in high cost and difficult technical implementation

Method used

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  • Comprehensive negative sequence and harmonic compensating system of electrified high-speed railway
  • Comprehensive negative sequence and harmonic compensating system of electrified high-speed railway
  • Comprehensive negative sequence and harmonic compensating system of electrified high-speed railway

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Embodiment Construction

[0015] see figure 1 , figure 1 It is a structural diagram of Embodiment 1 of the present invention. The present invention 4 is composed of a back-to-back railway power conditioner 2 (RPC), two groups of thyristor-controlled high-pass filters 3 (TCHF) with different parameters and thyristor-controlled reactors 1 (TCR). The RPC is installed between the two power supply arms on the secondary side of the three-phase V / V junction traction transformer through two single-phase three-winding step-down transformers. The thyristor-controlled high-pass filter is installed on the two power supply arms connected to the voltage phase leading Under the single-phase three-winding step-down transformer, the thyristor-controlled reactor (L 3 , L 4 ) is installed under two single-phase three-winding step-down transformers connected to the other power supply arm whose voltage phase lags. The RPC contains two converters connected through a shared DC capacitor, and the two converters are connec...

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Abstract

The invention discloses a comprehensive negative sequence and harmonic compensating system of electrified high-speed railway. The compensating system consists of a back-to-back type railway power regulator, two groups of thyristor controlled high-pass filters with different parameters and two groups of thyristor controlled reactors with different parameters in a combination way. The railway power regulator is connected with two power supplying arms at a secondary side of a three-phase V / V wiring traction transformer by two single-phase three-winding reducing transformer. The two groups of thyristor controlled high-pass filters are installed below the single-phase three-winding reducing transformer which is connected with the power supplying arm with relatively advanced voltage phase, and the two groups of thyristor controlled reactors are installed below the single-phase three-winding reducing transformer which is connected with the other power supplying arm with relatively hysteretic voltage phase. Compared with other compensating structures, the compensating system has the advantages of negative sequence and harmonic compensating effect improvement and active device capacity reduction, thus having good industrial application prospect.

Description

technical field [0001] The invention relates to a negative sequence and harmonic comprehensive compensation system, in particular to an electrified high-speed railway negative sequence and harmonic comprehensive compensation system. Background technique [0002] The construction of electrified high-speed railways will provide safe, reliable, high-speed, and large-capacity transportation guarantees for the development of the national economy, and is an important measure to further alleviate the shortage of railway transportation capacity and improve the brand and quality of transportation services. However, due to the single-phase power supply mode and the unique load of electric locomotives in the high-speed railway power supply system, power quality problems such as negative sequence, harmonics, voltage fluctuations and flicker are prominent, which seriously affect the power quality of the power supply system along the high-speed railway. It will have a bad impact on enterp...

Claims

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Application Information

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IPC IPC(8): H02J3/01H02J3/00
CPCY02E40/40
Inventor 罗安吴传平徐先勇马伏军方璐王文代亚培杨晓
Owner HUNAN UNIV
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