Rural distribution network low-voltage improvement device

Abstract

The invention discloses a rural distribution network low-voltage improvement device. The rural distribution network low-voltage improvement device comprises a single-phase EN series controller, a lineprotection unit and a capacitor which are electrically connected, a thyristor composite switch circuit, a molded case circuit breaker, a lightning arrester and a current transformer, wherein the controller adopts feedback monitoring, the real-time voltage of a load is used as a switching physical quantity, and signal data collection, calculation and control output are completed in 20ms, and aftera switching switch receives a switching command, zero-current input is completed within 10ms. There is no inrush current in switching, there is not impact on the power grid to ensure the real-time tracking of switching. The device is short in response time, good in voltage improving effect and high in compensation precision, and finally achieves the purposes of the stable tail end voltage of thesystem and the increased voltage pass rate.

Description

technical field [0001] The invention relates to the field of power distribution operation and maintenance, in particular to a low-voltage lifting device for rural power grids. Background technique [0002] In recent years, with the rapid development of my country's rural economy and society, the rural electricity load has grown rapidly, and the proportion of electricity consumption has undergone qualitative changes. The proportion of household appliances and other household electricity and seasonal electricity consumption such as drainage and irrigation has increased year by year, and the power supply pressure of rural power grids has also increased year by year. Large, the "low voltage" problem in some rural areas has once again become prominent, and the task of low voltage in rural power grids is still very arduous in the next few years. With the development of rural economy and society, the modernization of agricultural production and the rapid increase in the popularity of...

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Problems solved by technology

[0002] In recent years, with the rapid development of my country's rural economy and society, the rural electricity load has grown rapidly, and the proportion of electricity consumption has undergone qualitative changes. The proportion of household appliances and other household electricity and seasonal electricity consumption such as drainage and irrigation has increased year by year, and the power supply pressure of rural power grids has also increased year by year. Large, the "low voltage" problem in some rural areas has once again become prominent, and the task of low voltage in rural power grids is still very arduous in the next few years. With the development of rural economy and society, the modernization of agricultural production and the rapid increase in the popularity of household appliances, the power load will remain continuous Rapid growth trend, the development speed of rural power grids in some areas still cannot fully meet the demand

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