Active power distribution network reactive voltage optimization method coordinated with multiple active management means

Abstract

The invention discloses an active power distribution network reactive voltage optimization method coordinated with multiple active management means. According to the invention, a global optimization-local adjustment two-stage reactive voltage optimization strategy is adopted. Specifically, according to the operation scheme of the invention, the optimized comprehensive satisfaction degree of the network loss and the voltage deviation is adopted as a target, and elements longer in regulation time scale, such as an on-load tap-changer, a capacitor bank, a contact and sectional switch and the like, are optimized. After that, a minimum voltage volatility index is adopted as a target. Moreover, a model is optimized and solved based on the application of the improved harmony search algorithm. Finally, through the analysis of examples, the reasonability and the superiority of the reactive voltage optimization method are verified.

Description

technical field [0001] The invention relates to a reactive power voltage optimization method of an active distribution network, in particular to a reactive power voltage optimization method of an active distribution network coordinated by multiple active management means. Background technique [0002] The aggravation of energy depletion and environmental pollution has led to the vigorous development of renewable energy distributed generation technology. However, the high penetration rate of distributed generation (DG) will have a series of profound impacts on the operation of distribution network. In order to adapt to the large-scale access of DG, improve the compatibility of distribution network with DG and the ability to accommodate green power, and further improve the optimal operation level of distribution network, active distribution network (ADN) technology should And born. The intermittent fluctuations of green DG output such as wind turbine (WT), photovoltaic (PV), ...

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Problems solved by technology

(2) With the goal of minimizing the total operating loss of the distribution network, the static reactive power optimization of a certain operating time period is studied, taking into account active management methods such as OLTC, capacitor bank, DG reactive power, etc., but the key components are not considered Influence of adjustment times constraint and intermittent fluctuation of DG output on system voltage

(4) Considering the optimization control of various reactive power and voltage equipment such as OLTC, capacitor bank, static var compensator, voltage regulator, etc., the static reactive power and voltage optimization of the active distribution network is studied, without taking into account the network operation The timing characteristics of

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