Dry type iron core reactor capable of realizing parallel capacitor grouping

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...

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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

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