A reactive power compensation device for no-load transformer based on high supply and high meter

A compensation device and high supply height meter technology, applied in reactive power compensation, reactive power adjustment/elimination/compensation, circuit devices, etc., to avoid electricity fines, improve compensation accuracy, and reduce line losses.

Inactive Publication Date: 2018-12-25
广州峰控电力科技有限公司
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0008] The invention is a no-load reactive power compensation device, which is used to solve the problem of no-load or light-load compensation of "high supply and high meter" transformers. It is a supplement to the currently popular load reactive power compensation device in the market. The electric power factor can reach the standard at any time

Method used

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  • A reactive power compensation device for no-load transformer based on high supply and high meter
  • A reactive power compensation device for no-load transformer based on high supply and high meter

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Embodiment Construction

[0023] Below in conjunction with accompanying drawing and embodiment the technical scheme of the present invention is described further,

[0024] The present invention provides a no-load transformer reactive power compensation device based on high power supply and high calculation, see figure 1 , The reactive power compensation device mainly includes: main switch QF, voltmeter V circuit, ammeter A circuit, main work compensation circuit, supplementary compensation circuit, three-phase electric energy meter circuit.

[0025] The V circuit of the voltmeter is connected to the A and N phases of the transformer through the fuse Fu and displays the voltage of the A phase at the low voltage side of the transformer.

[0026] The A circuit of the ammeter is connected in series on the secondary side of the current transformer Ta. The current transformer Ta is a feed-through type. The transformation ratio is determined according to the capacity of reactive power compensation. B-phase c...

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Abstract

A reactive power compensation device of no-load transformer based on high supply and high meter is composed of a main working compensation loop, a supplementary compensation loop and da isplay metering loop. The main working loop can not only achieve the effect of reactive power compensation, but also effectively avoids the harmonic resonance. Supplementary compensation circuit can improve the compensation precision of high voltage side of transformer. The invention makes up for the defect that the reactive power compensation of the load carried by the enterprise can not be switched on and offwhen the transformer is no load, improves the compensation precision and improves the power factor when the low voltage side of the transformer is no load. Whether or not the transformer is in a large load state or no load state, the power factor measured at the high-voltage side of the transformer can be kept above 0.9, so the power regulation fee penalty can be effectively avoided, and the power consumption cost of the enterprise is reduced.

Description

technical field [0001] The invention relates to a no-load reactive power compensation device, which is suitable for no-load power distribution transformers with "high power supply and high meter". Background technique [0002] When enterprises report to the power supply department to install transformers, considering the cumbersome procedures, they generally configure transformers with corresponding capacities according to the power consumption plan for the next five years. In the production process of enterprises, it is often unavoidable to encounter the influence of production off-season, technological upgrading and transformation, and holidays. At this time, the load is very low, and the transformer will be in no-load or light-load operation state. [0003] According to the "Power Supply Business Rules", when using telegrams, the power supply department will require that the configured reactive capacity is not less than 30% of the transformer capacity, divided into 5-6 gr...

Claims

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Application Information

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IPC IPC(8): H02J3/18
CPCH02J3/1864Y02E40/30Y02P80/10
Inventor 陈小奋陈谨
Owner 广州峰控电力科技有限公司
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