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Device for improving the reactive power of commercial and residential electrical appliances

A technology for residential electricity and electrical appliances, applied in reactive power adjustment/elimination/compensation, circuit devices, reactive power compensation, etc. Huge effect, prolonging service life and compensating for reactive power loss

Active Publication Date: 2016-08-31
STATE GRID TIANJIN ELECTRIC POWER +1
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AI Technical Summary

Problems solved by technology

[0005] (2) The power factor of commercial and residential electrical appliances is low, generally around 0.6 to 0.7, and there are many high-order harmonics generated by electrical appliances, mainly 2nd and above high-order harmonics, these harmonics will cause Distortion of voltage and current waveforms can make the picture quality of electrical appliances such as TV sets poor, increase the noise, cause all electrical appliances to heat up, reduce the use efficiency, and also reduce the service life of electrical appliances

Method used

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  • Device for improving the reactive power of commercial and residential electrical appliances
  • Device for improving the reactive power of commercial and residential electrical appliances
  • Device for improving the reactive power of commercial and residential electrical appliances

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Embodiment Construction

[0017] The device for increasing the reactive power of commercial and residential electrical appliances provided by the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0018] Such as figure 1 As shown, the device for improving the reactive power of commercial and residential electrical appliances provided by the present invention includes:

[0019] Potential transformer PT, current transformer CT, capacitor C, first capacitor C1, reactor L, first reactor L1, fuse Fu, first fuse Fu1, switch P, first switch P1, discharge coil L D , the first discharge coil L D1 , the first silicon controlled rectifier V1, the second silicon controlled rectifier V2, the microcomputer actual measuring device CPU; wherein: the two ends of the primary side of the voltage transformer PT are respectively connected with the phase line L and the neutral line N of the 220V power supply, and the two ends of the secondary side ...

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Abstract

The invention provides a device for improving the reactive power of commercial and residential electrical appliances. The device comprises a voltage transformer (PT), a current transformer (CT), a capacitor (C), a first capacitor (C1), a reactor (L), a first reactor (L1), a fuse (Fu), a first fuse (Fu1), a switch (P), a first switch (P1), a discharge coil (LD), a first discharge coil (LD1), a first silicon controlled rectifier (V1), a second silicon controlled rectifier (V2) and a microcomputer measuring device CPU. According to the invention, the device can reduce the harm to the electrical appliances caused by high harmonic waves, reduce heat of the electric appliances, prolong the service life of electrical appliances and raise he power factor of the existing commercial and residential electrical appliances from around 0.6 to 0.7 to above 0.95. For the effective compensation of reactive power loss, more than 10% power can be saved, showing the enormous economic benefits brought by power saving technologies.

Description

technical field [0001] The invention belongs to the technical field of power grid reactive power compensation, in particular to a device for increasing the reactive power of commercial and residential electrical appliances. Background technique [0002] With the development of the economy and the improvement of people's living standards, the power load is constantly increasing. Due to the increasing reactive power consumption, the system needs to compensate more and more reactive power. Therefore, in recent years, urban power grids, agricultural The transformation pressure of the power grid such as power grid transformation and transformer capacity increase is also increasing, which has brought a lot of inconvenience to the work of the power supply department and people's lives. [0003] The current situation of commercial and residential electricity consumption has the following problems: [0004] (1) Commercial and residential electricity consumption accounts for about 30...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/18H02J3/01
CPCH02J3/01H02J3/1871Y02E40/30Y02E40/40
Inventor 宁景云郭冰陈钊胡岩彬宁宁宁一
Owner STATE GRID TIANJIN ELECTRIC POWER
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