Dynamic reactive power compensation device of line thyristor switching capacitor

A thyristor switching, capacitor technology, applied in reactive power compensation, reactive power adjustment/elimination/compensation and other directions, can solve the problem of not being able to meet the automatic compensation of reactive power well, and achieve the solution of three-phase balance and reactive power. problems, the effect of purifying the power supply and consumption environment, and improving the power factor

Inactive Publication Date: 2011-06-08
济南银河电气有限公司
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Problems solved by technology

However, the comprehensive automatic control of the existing power grid cannot well meet the special requirements of automatic reactive power compensation

Method used

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  • Dynamic reactive power compensation device of line thyristor switching capacitor
  • Dynamic reactive power compensation device of line thyristor switching capacitor

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Embodiment Construction

[0011] As shown in the accompanying drawings, the line thyristor switching capacitor dynamic reactive power compensation device of the present invention includes a thyristor switching capacitor bank 1, an external current transformer 3, a programmable controller 4 and an output transformer 2, a thyristor switching capacitor bank 1 and The external current transformers 3 are connected to the programmable controller 4, the thyristor switching capacitor 1 is connected in series with the output transformer 2, and both the external current transformers 3 and the output transformer 2 are connected in parallel with the power system.

[0012] The current and voltage signals of the power system are collected through the external current transformer 3, and the programmable controller 4 compares the collected reactive current value of the power system with the set value. When the load reactive current detected by the programmable controller 4 exceeds the set value value, automatically jud...

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Abstract

The invention provides a dynamic reactive power compensation device of a line thyristor switching capacitor, comprising a thyristor switching capacitor group, an external current transformer, a programmable controller and an output transformer, wherein the thyristor switching capacitor group and the external current transformer are both connected with the programmable controller; the thyristor switching capacitor is connected with the output transformer in series; and the external current transformer and the output transformer are both connected with a power system in parallel. In the dynamic reactive power compensation device of a line thyristor switching capacitor, low-voltage dynamic reactive power compensation is combined with the boost output transformer technology, the working can be completely and automatically performed to ensure that a switching capacitor does not have the processes of impacting, inrush current and transition, the line electric force quality can be effectively improved, the energy is saved, the power supply environment is purified, a power factor is improved, the electric charges are saved, and the problems of three-phase balance and reactive power for a power-supply voltage can be solved.

Description

technical field [0001] The invention relates to a reactive power compensation device for improving the power quality of transmission lines, belonging to the technical field of power quality control. Background technique [0002] Harmonics, electromagnetic interference, and power factor reduction have been listed as the three major public hazards of the power system. When the power quality of the grid is disturbed or polluted and fails to meet the power quality standards, it is necessary to improve the power quality in a targeted manner. Power quality problems can be divided into two major aspects of voltage quality and current quality. Voltage quality problem refers to the unsatisfactory system voltage that will affect the normal operation of user equipment, including voltage flicker, transient overvoltage, harmonic distortion, voltage imbalance of each phase, etc.; current quality problem refers to power electronic equipment and other non-ideal The current distortion broug...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/18
CPCY02E40/30
Inventor 赵庆春崔贵峰高永存栾滨
Owner 济南银河电气有限公司
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