Method and system for controlling low voltage in rural power grid

Abstract

The invention discloses a rural distribution network low voltage treatment method, comprising the steps of obtaining a load voltage of a load node; judging whether the node voltage is smaller than a preset threshold or not; determining a voltage adjustment parameter of a voltage adjustment device according to the load voltage if the node voltage is smaller than the preset threshold; and sending the voltage adjustment parameter to a voltage adjustment device, thereby enabling the voltage adjustment device to adjust the load voltage according to the voltage adjustment parameter, wherein the voltage adjustment device comprises a feeder line reactive compensation device, and the voltage adjustment parameter of the feeder line reactive compensation device is feeder line reactive compensation quantity. According to the method and the system, through monitoring and analysis of the load voltage of the load node, the adjustment can be carried out by controlling the voltage adjustment parameterof the voltage adjustment device when the low voltage condition occurs; through utilization of the advantage that the feeder line reactive compensation device is close to the load node, the low voltage problem of the load node is effectively solved; and the treatment effect is improved. The invention also provides a rural distribution network low voltage treatment system. The system has the same beneficial effects.

Description

technical field [0001] The present application relates to the technical field of power distribution network, in particular to a method and system for controlling low voltage in rural power network. Background technique [0002] With the gradual improvement of the living standards of farmers in our country, the corresponding power distribution facilities are increasingly unable to meet the electricity demand in rural areas, resulting in the problem of low voltage in rural power grids becoming more and more prominent, resulting in damage to electrical equipment and regional Wide-scale blackouts and other accidents have seriously affected the normal life of users. [0003] In the prior art, the reactive power compensation of the bus bar reactive power compensation device is generally used, or the method of adjusting the transformation ratio of the distribution transformer in the distribution line is used to control the low voltage problem of the rural power grid. However, it is...

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Problems solved by technology

[0002] With the gradual improvement of the living standards of farmers in our country, the corresponding power distribution facilities are increasingly unable to meet the electricity demand in rural areas, resulting in the problem of low voltage in rural power grids becoming more and more prominent, resulting in damage to electrical equipment and regional Wide-scale blackouts and other accidents have seriously affected the normal life of users

[0003] In the prior art, the reactive power compensation of the bus bar reactive power compensation device is generally used, or the method of adjusting the transformation ratio of the distribution transformer in the distribution line is used to control the low voltage problem of the rural power grid. However, it is often impossible to obtain the ideal and Precise adjustment effect

This is because, whether it is a busbar reactive power compensation device or a distribution transformer, the distance between it and the load node will reduce the loss on the distribution line and reduce the compensation and adjustment effects, so the final treatment effect is not ideal

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