Economical three-phase alternating current voltage stabilizer

Abstract

The invention relates to the field of electric power technology and is widely applied to voltage regulating and stabilizing devices, in particular to an economical three-phase alternating current voltage stabilizing which is safe, reliable and good in voltage regulating effect and comprises a plurality of three-phase compensators connected in series. Each group of three-phase compensators comprises a primary winding TR, a primary winding TS, a primary winding TT, a primary winding TN and a secondary winding.

Description

technical field [0001] The invention relates to the field of electric power technology and is widely used in voltage regulating and stabilizing devices, in particular to an economical three-phase AC voltage stabilizing device. Background technique [0002] Electricity is one of the most important energy sources used in modern industry, agriculture and modern social life. Voltage changes widely affect various industrial electrical equipment. At present, there are still a large number of users in various countries far away from power supply points, especially in economically backward countries and regions. , there is also a serious undervoltage. [0003] Electricity is a product of a civilized society, and it promotes the development of a civilized society. The degree of use of electricity is closely related to a civilized society. The indicator of a civilized society is the rapid development of science and technology. The higher the degree of socialization of production, the ...

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Problems solved by technology

It was also found that the explosion of the capacitor and the bulging of the shell were caused by partial discharge and insulation aging accumulation. It can be seen that low voltage and high voltage also seriously affect the expected service life of the reactive power compensation device and the reliability of the power supply. Safe operation; ④ VQC voltage and reactive power control device has a continuous working safety time ≥ 1000 hours. If the maintenance is not timely, it may cause short-term undervoltage of the power supply, which will cause the advanced electrical equipment to stop working or be damaged, and even cause the power supply system in the power consumption area disintegrated major accident

At the same time, it is also found that the root causes of the above-mentioned ①②③④ are all caused by the unreasonable voltage regulation tap of the power transformer and the unreliability of the on-load voltage regulation tap switch; ⑤The response speed of the inductive voltage regulator is slow ≤ 5V / S, low efficiency ≤93%, poor voltage regulation accuracy ≤±5%; ⑥The voltage regulation speed of the carbon brush AC voltage stabilizer is ≤25V / S, which requires regular maintenance

It is also found that if there is no regular maintenance, when the carbon brush wears seriously, it will burn the copper pillar and affect the power supply, and cause a safety accident

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