Stepless rapid phase-control reactive power dynamic compensation device and compensation method thereof

A dynamic compensation and fast technology, applied in reactive power adjustment/elimination/compensation, reactive power compensation, harmonic reduction devices, etc., can solve problems such as large inrush current, frequent switching of contactors, and low compensation accuracy

Inactive Publication Date: 2009-12-30
NANNING MICRO CONTROL HIGH TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Static compensation: often divided into fixed or graded compensation, the general structure is relatively simple, and AC contactors are mostly used as switching actuators for power capacitors, but the disadvantage is that only fixed ge...

Method used

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  • Stepless rapid phase-control reactive power dynamic compensation device and compensation method thereof
  • Stepless rapid phase-control reactive power dynamic compensation device and compensation method thereof
  • Stepless rapid phase-control reactive power dynamic compensation device and compensation method thereof

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Embodiment Construction

[0060] The stepless fast phase-controlled reactive power dynamic compensation device and compensation method of the present invention will be further described below in conjunction with the accompanying drawings.

[0061] Such as figure 1 As shown, the stepless fast phase-controlled reactive power dynamic compensation device of the present invention includes a compensation transformer and its control circuit, and a capacitor bank; the secondary winding Q of the compensation transformer T 次 Connected in series between the access busbar and the capacitor bank; the primary winding Q of the compensation transformer 初 connected to the output terminal of the control circuit;

[0062] The control circuit includes:

[0063] Equipped with a phase adjustment circuit with a working power supply: used to output a sine wave phase-shifting voltage with adjustable phase;

[0064] Signal detection circuit connected in series between the access bus and the phase adjustment circuit: used to ...

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PUM

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Abstract

The invention discloses a stepless rapid phase-control reactive power dynamic compensation device and a reactive dynamic compensation method. The device comprises a compensation transformer and a control circuit thereof, a capacitor or a capacitor bank; wherein, a secondary winding of the transformer is connected between an access bus and the capacitor in series; a primary winding of the transformer is connected to the output terminal of the control circuit; the control circuit comprises a phase-adjusting circuit adapted with a working power supply, a signal detection circuit connected between the access bus and the phase-adjusting circuit in series and a sampling circuit connected between the phase-adjusting circuit and the output side of the secondary winding of the transformer; the primary winding of the transformer is connected to the output terminal of the phase-adjusting circuit. The reactive compensation of the invention can be realized only by adjusting the output voltage phase of the phase-adjusting circuit, therefore, the invention can realize stepless compensation and has high adjusting accuracy, rapid response, high efficiency and good compensation effect. The compensation device and method of the invention are suitable for all the voltage grades of the existing power grids and various places such as substations, electrified railways and the like.

Description

technical field [0001] The invention relates to a reactive power dynamic compensation method and a reactive power dynamic compensation device, and more specifically relates to a stepless fast phase-controlled reactive power dynamic compensation device and a compensation method thereof. Background technique [0002] In the distribution network, the reactive power generated by the power generator and the power of the transmission line are often insufficient to meet the reactive power demand of a large number of motors, transformers, reactors, fluorescent lamps and other inductive loads in the network and the reactive power loss in the system. , which often leads to a decrease in the power factor of the grid and a decrease in the utilization rate of the grid system. In order to reduce active power loss and voltage drop, reduce loss in power transmission, ensure safe, economical and efficient operation of the power grid, and improve the capacity and quality of power transmission...

Claims

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Application Information

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IPC IPC(8): H02J3/18H02J3/01
CPCY02E40/30Y02E40/40
Inventor 骆武宁
Owner NANNING MICRO CONTROL HIGH TECH
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