A method for configuring series capacitors in distribution network

Abstract

The embodiment of the present invention discloses a method for configuring series capacitors in a distribution network. The method includes: obtaining candidate lines of series compensation capacitors, determining the range of capacitive reactance of series compensation capacitors according to the candidate lines, and The value range determines the installation position and capacitance value of the series capacitor. This scheme provides a method for configuring series capacitors in distribution networks, which has the optimization goal of minimizing the overall voltage deviation, total compensation capacitance reactance and active network loss, taking into account the role of transformer taps to adjust voltage, and determining the reasonable The characteristics of the installation position and capacitive reactance of the series capacitors can provide a scientific basis for formulating the optimal configuration scheme of series capacitors to improve the voltage quality of the distribution network, which can effectively improve the voltage quality of the distribution network.

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...

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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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