Reactive-power voltage coordination and optimization control method and device

Abstract

The embodiment of the invention provides a reactive-power voltage coordination and optimization control method and device and belongs to the technical field of reactive-power voltage optimization of active distribution networks. The reactive-power voltage coordination and optimization control method comprises the following steps: acquiring to-be-processed power grid data; dividing the to-be-processed power grid data into multiple time intervals according to a defaulting rule, and acquiring corresponding target data at each time interval; acquiring an uncertain model for corresponding preset photovoltaic power and load output at each time interval, and substituting the target data into the uncertain model; acquiring a first result output by the corresponding uncertain model at each time interval; performing iterative computations on the first results based on a Gaussian load-flow algorithm so as to acquire a third result corresponding to each time interval; and acquiring a matching value of the third result corresponding to each time interval and a preset ratio, and establishing a reactive-power optimization model by taking the third result corresponding to the matching value as anobjective function.

Description

technical field [0001] The invention relates to the technical field of voltage and reactive power optimization of an active distribution network, in particular to a voltage and reactive power coordination optimization control method and device. Background technique [0002] With the development of the national energy strategy, renewable energy power generation has received increasing attention, and more and more wind power and photovoltaic power generation systems have been incorporated into the distribution network in the form of distributed power. After grid connection, on the one hand, the distribution network changes from a simple radiation-type passive structure to a complex active network covering power sources and loads, and its power flow direction, voltage drop, and branch power have greatly changed. Since photovoltaic power generation has obvious characteristics of uncertainty and randomness, and with the increase of photovoltaic penetration rate, it is easy to cau...

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Problems solved by technology

Therefore, there are technical problems in the prior art that the distribution network voltage exceeds the limit and fluctuates

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