Active power distribution network district reactive power global optimization voltage regulation method

Abstract

The invention discloses a reactive power global optimization voltage regulation method for an active power distribution network district, and the method can form a reactive power voltage regulation sensitivity matrix based on regulation-feedback real-time dynamic learning, quickly calculates a global reactive power optimization strategy according to node voltage and reactive power equipment, and achieves the automatic management and control of the voltage of the district. According to the method, reactive power resources such as a capacitor reactive power compensation device, a static var generator (SVG), a photovoltaic inverter and an energy storage converter which are distributed in a transformer area can be brought into full play, reactive power flow is optimized to realize voltage regulation, and the quality of power supply voltage is improved.

Description

technical field [0001] The invention relates to a reactive power overall optimal voltage regulation method for an active distribution network station area, and belongs to the technical field of power system operation and control. Background technique [0002] An important feature of the active distribution network under the new power system is that the power flow presents two-way flow, especially the time-varying and fast-fluctuating two-way flow of reactive power flow. In the distribution station area, the centralized reactive power compensation device is mainly configured on the low-voltage side of the distribution transformer to realize the reactive power balance of the station area. This mode is effective for the traditional power grid. However, in the new type of station area formed by the grid connection of new equipment such as distributed photovoltaics, energy storage devices, and electric vehicle charging piles, this reactive power compensation method is difficult t...

AI Technical Summary

Problems solved by technology

However, in the new type of station area formed by the grid connection of new equipment such as distributed photovoltaics, energy storage devices, and electric vehicle charging piles, this reactive power compensation method is difficult to achieve reactive power dynamic balance, resulting in two-way over-limit of the distribution network voltage and large-scale Fluctuations, which seriously affect the power quality of users and the consumption of distributed energy

The reactive power adjustment of the existing station areas is either carried out according to the local local balance strategy, or based on the global optimization strategy of complex parameters, and the reactive power adjustment function of new power electronic equipment such as photovoltaic inverters and energy storage converters has not been fully utilized, and the Can not solve the reactive power global optimization of the station area well

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