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Mixed static synchronous reactive compensator

A technology of static synchronous and compensating devices, which is applied in transportation and packaging, power lines, vehicle components, etc., and can solve problems such as SVC can not be adjusted, M-phase and T-phase active power is unbalanced, and the adjustment range is limited.

Inactive Publication Date: 2007-08-22
CSR ZHUZHOU ELECTRIC LOCOMOTIVE RES INST +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] (3) SVC cannot adjust the active power between M phase and T phase to realize unbalance compensation;
[0007] (4) SVC must realize reactive power compensation through huge energy storage equipment, shunt capacitors generate leading (capacitive) reactive power, and shunt reactors generate lagging (inductive) reactive power
[0008] (5) For the adjustment of reactive power, TCR can only produce lagging (inductive) reactive power, and the adjustment range is limited

Method used

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Embodiment Construction

[0027] As shown in Figure 1-Figure 7. A hybrid static synchronous reactive power compensation device, which includes a DC power supply 10, a first circuit breaker 11 and a second circuit breaker 12; the DC power supply 10 converts AC power into DC power and outputs it to the DC power supply end of other circuits, It is characterized in that it also includes a DC link 7, a control circuit 8, a signal detection circuit 9, and consists of a fixed compensation capacitor bank 1, a compensation transformer 2, a soft start circuit 3, a filter 4, a first single-phase inverter 5, a second The first compensation loop formed by two single-phase inverters 6; the fixed compensation capacitor bank 1 is connected between the M phase of the alternating current and the ground through the first circuit breaker 11, and the compensation transformer 2 is a primary side with a single winding, The secondary side is a step-down transformer with double windings, the primary side is connected between t...

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Abstract

The mixed static synchronous reactive compensator includes one DC power source, one first circuit breaker, one second circuit breaker, one DC link, one control circuit, one signal detecting circuit, one first compensation network comprising fixed compensating capacitor bank, compensating transformer, soft starting circuit, filter, the first monophase inverter and the second monophase inverter, and one second compensation network in the same structure as the first one. The first monophase inverter and the second monophase inverter are connected in parallel to share one DC link. After the detecting signal is output to the control circuit, the control circuit outputs pulse trigger signal to control the switching device and circuit breakers of the inverter, the charging contactor and the work contactor. The present invention is used for dynamic compensation and balance of the reactive power in the AC power system of electric railway.

Description

technical field [0001] The invention relates to equipment in the technical field of AC power supply systems, namely a hybrid static synchronous reactive power compensation device (FC+STACOM), which can perform active power compensation for reactive power and unbalance of electrified railway substations. Background technique [0002] It has become a very important direction to solve the network voltage drop of the electrified railway AC power supply system, improve the power supply capacity of the traction network, suppress the harmonics of the power grid, and improve the power quality. Static synchronous var compensation device (STACOM) has been greatly developed in both theory and practical application due to its good dynamic performance and compensation accuracy. [0003] At present, most of the dynamic var compensation devices adopt the static var compensator (SVC), that is, the form of FC+TCR, and its working principle is shown in Fig. 2 . The traditional static var com...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60M3/00
Inventor 王卫安谭胜武马雅青黄燕艳沈辉段世彦张定华周方圆刘兴民
Owner CSR ZHUZHOU ELECTRIC LOCOMOTIVE RES INST
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