Low-voltage regulation method for power distribution network

Abstract

The invention relates to a low-voltage regulation method for a power distribution network. The low-voltage regulation method comprises the steps of obtaining data parameters of a main transformer, an SVR feeder line automatic voltage regulator, a power distribution transformer and a load circuit; analyzing low-voltage reasons and low-voltage positions of the power grid through the data parameters; if the SVR feeder line automatic voltage regulator, the power distribution transformer and the load circuit terminal all suffer from lower voltages, performing voltage regulation by adjusting a main transformer tap gear; if the power distribution transformer and the load circuit terminal both suffer from lower voltages, performing voltage regulation by adjusting a tap switch position of the SVR feeder line automatic voltage regulator to change the transformation ratio of an auto-transformer; and if only the load circuit terminal suffers from a lower voltage, performing voltage regulation by adjusting the tap position of the power distribution transformer and switching a reactive compensation capacitor. By adoption of the low-voltage regulation method, the voltage at the tail end of a city and town power grid is improved, the reactive current flow of the circuit is lowered, the electric energy loss is reduced, and the power supply voltage quality of rural power grids is improved.

Description

technical field [0001] The invention relates to a low-voltage control method, in particular to a low-voltage voltage regulation method for a distribution network. Background technique [0002] In recent years, with the development of the economy, the load of urban power grids has increased dramatically, and the demand for electricity from users has continued to increase. However, the lines of my country's rural power grids are too long, the wire diameters are too thin, and the booster and compensation equipment are insufficient, resulting in the terminal voltage and power of rural power grids If the factor is too low, it will seriously affect the normal power consumption of rural grid users, so a series of voltage regulation measures must be taken to ensure that the voltage meets the requirements of the grid. If the grid user's voltage is too low and the power factor is too low, the equipment will fail to start and the equipment will not operate normally, which will affect th...

AI Technical Summary

Problems solved by technology

If the grid user's voltage is too low and the power factor is too low, the equipment will fail to start and the equipment will not operate normally, which will affect the normal power consumption of the user

At present, the low-voltage control of rural power grids is to install a single reactive power compensation device on one line. There is no communication between the devices, and they cannot be controlled uniformly. The cost is high and the voltage control effect is not obvious.

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