Configuration method for series capacitor of power distribution network

Abstract

An embodiment of the invention discloses a configuration method for a series capacitor of a power distribution network. The method comprises the following steps: acquiring a candidate line of a series compensation capacitor, determining a capacitive impedance value range of the series compensation capacitor according to the candidate line, and determining a mounting position and a capacitive value of the series capacitor according to the capacitive impedance value range. According to the scheme, the configuration method for the series capacitor of the power distribution network has the features that minimizing of voltage integral deviation, total compensation capacitive impedance and active network loss serves as an optimized purpose, a tap of a transformer has the effect of adjusting voltage, the reasonable mounting position and capacitive impedance of the series capacitor are determined through multi-purpose optimized calculation and the like, so that a scientific basis is provided for formulation of a series capacitor optimized configuration scheme for improving voltage quality of the power distribution network, and the voltage quality of the power distribution network can be improved effectively.

Description

technical field [0001] The invention relates to the technical field of series compensation, in particular to a method for configuring series capacitors in a distribution network. Background technique [0002] With the development of economy and society, the requirements of power users for voltage quality are constantly increasing. The quality of distribution network voltage is directly related to the safe and high-quality operation of electrical equipment, and has an important impact on people's production and life. Therefore, ensuring voltage quality is one of the basic requirements for distribution network operation. Although the shunt reactive power compensation technology currently used in the distribution network can improve the voltage quality, because the reactive power provided by the shunt capacitor is proportional to the square of the voltage at the installation site, it cannot effectively improve the voltage for heavy-duty long lines with a large power supply radi...

AI Technical Summary

Problems solved by technology

The main disadvantages of this method are: ①The objective function of this method only considers the active power loss, not the voltage amplitude, so that the final optimization scheme cannot meet the requirements of voltage quality well; ②The final optimization scheme of this method needs to be Adding a series capacitor at each position increases the complexity of the practical application; ③This method does not take into account the adjustment effect of the transformer tap on the voltage, and cannot realize the combined voltage regulation of the series capacitor and the on-load tap changer

Therefore, the existing configuration method of installing series capacitors in multiple locations increases the investment and operation and maintenance costs of series capacitor compensation facilities, and cannot effectively use series capacitors to improve the voltage quality of users

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