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Rural distribution network low-voltage improvement device

A low-voltage, rural power grid technology, applied in circuit devices, AC network voltage adjustment, AC network circuits, etc., can solve problems such as the arduous task of low voltage in rural power grids, low voltage, and the speed of rural power grid development cannot fully meet the needs, etc. Reasonable and healthier capital investment, reduced electrical damage, and the effect of relieving the pressure of actual assessment

Pending Publication Date: 2019-11-01
STATE GRID TIANJIN ELECTRIC POWER +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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

Method used

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  • Rural distribution network low-voltage improvement device

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Embodiment Construction

[0009] Below in conjunction with accompanying drawing and specific embodiment the present invention will be described in further detail:

[0010] see figure 1 , the rural network low-voltage lifting device of the present invention includes an electrically connected single-phase EN series controller, a line protection unit and a capacitor, a thyristor composite switch circuit, a molded case circuit breaker, a lightning arrester and a current transformer, wherein the controller adopts a feedback type Monitoring, using the real-time voltage of the load as the switching physical quantity, completes signal data collection, calculation, and control output within 20ms. After the switching switch receives the switching command, it completes zero current input within 10ms, and there is no inrush current in switching. There is no impact on the power grid to ensure real-time tracking of switching.

[0011] Composition of the device: The device of the present invention is composed of an ...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/16H02J3/18
CPCH02J3/16H02J3/1864Y02E40/30
Inventor 李双宝赵娜李博李思研兰昊
Owner STATE GRID TIANJIN ELECTRIC POWER
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