Dry type iron core reactor capable of realizing parallel capacitor grouping

A technology of reactors and capacitors, which is applied in transformers/inductor coils/windings/connections, inductance with magnetic cores, reactive power compensation, etc. Overpayment and other issues

Inactive Publication Date: 2011-07-13
辽宁拓新电力电子有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims to solve the problems of high cost of the existing reactive power compensation complete set, overcompensation often occurs on site, and undercompensation without investment, and provides a dry-type iron-core reactor that can realize grouping of parallel capacitors. The reactor is made into two types of capacity combinations, which can be connected to two capacitor banks of different capacities to complete the switching of three types of capacity. Therefore, the use of a dry-type iron core reactor can realize the grouping of three groups of capacitors, thereby reducing the reactor. Quantity, improve compensation accuracy, reduce equipment investment

Method used

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  • Dry type iron core reactor capable of realizing parallel capacitor grouping
  • Dry type iron core reactor capable of realizing parallel capacitor grouping

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Embodiment Construction

[0007] As shown in the figure, the reactor includes a reactor core 1. Two sets of coils 2 and 3 are respectively wound on the reactor core 1 of each phase, and the two sets of coils 2 and 3 are wound side by side on the same side. There are three sets of incoming line terminals A1 and A2, B1 and B2, C1 and C2, and three sets of outgoing line terminals X1 and X2, Y1 and Y2, Z1 and Z2.

[0008] When wiring, connect the three sets of incoming line terminals A1 and A2, B1 and B2, C1 and C2 to the phase A, phase B and phase C of the three-phase electricity respectively through vacuum switches K1a and K2a, K1a and K2a, K1a and K2a, and connect the three Group outlet terminals X1 and X2, Y1 and Y2, Z1 and Z2 are respectively connected to two capacitor banks C1 and C2, so that each group of coils is connected in series in the corresponding capacitor bank circuit, among which vacuum switches K1a, K1b, and K1c form a group , Vacuum switches K2a, K2b, K2c are a group. Each group of coil...

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Abstract

The invention discloses a dry type iron core reactor capable of realizing parallel capacitor grouping, solving the following problems: the existing reactive compensation complete equipment has high cost; and excessive compensation often occurs if switching is carried out and deficient compensation often occurs if switching is not carried out in the fields. The reactor comprises reactor iron cores. The reactor is characterized in that two coils are respectively wound on each phase of a reactor iron core and are wound in parallel at the same side; and incoming terminals and outgoing terminals are respectively led out of each coil. A reactor combines two types of capacity and can be connected with two capacitor groups with different capacity to complete switching of the capacitors with three types of capacity, so grouping of three groups of capacitors can be realized by adopting a dry type iron core reactor, thus reducing the quantity of the reactors, improving the compensation precision and lowering the equipment investment.

Description

technical field [0001] The invention belongs to electric power equipment used in the technical field of reactive power compensation in electric power systems, and in particular relates to a dry-type iron-core reactor which is applied to capacitor group switching and can realize parallel capacitor grouping. Background technique [0002] At present, in the field of reactive power compensation in 10 (6) KV power systems, group switching capacitors are used, and each group of capacitor groups must be connected in series with a reactor to suppress closing inrush current and harmonics. Several groups of capacitors need several Reactor, which increases the cost of the reactor, so that the cost of the complete set of reactive power compensation equipment remains high; at the same time, because each group occupies a 10kV power distribution interval, the number of device groups is not many due to the limitation of the substation interval, but the capacity It is very large, and the pro...

Claims

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Application Information

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IPC IPC(8): H01F17/04H01F27/30H02J3/18
CPCY02E40/30
Inventor 杜丙军黄钢
Owner 辽宁拓新电力电子有限公司
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