Day-ahead optimal scheduling method for incremental distribution network with high permeability distributed photovoltaic

Abstract

The present invention discloses a day-ahead optimal scheduling method for incremental power distribution network with high permeability distributed photovoltaic. The method comprises following steps:constructing an incremental distribution network day-ahead optimization model according to a incremental distribution network model, the optimization model includes a running cost objective function and constraint conditions: using the constructed incremental distribution network day-ahead optimization model and taking minimization of the objective function as a target to optimize the incrementaldistribution network; the day-ahead optimal scheduling method for incremental distribution network with high permeability distributed photovoltaic has following advantages: comprehensively consideringtechnologies of a photovoltaic converter RPC, a power distribution station SVC, an OLTC tap action and a user side ESS charge and discharge control methods, considering superiority of the distributedphotovoltaic in the incremental distribution network and user side energy storage complementary power supply, establishing a quadratic constrained quadratic QCQP optimization model based on a branchpower flow model BFM. The control method is more comprehensive and can obtain a scheduling plan with a smaller day-ahead running cost and achieve the desired voltage regulation effect.

Description

technical field [0001] The invention relates to the technical field of power supply and distribution, in particular to a day-ahead optimization scheduling method for an incremental distribution network containing high-permeability distributed photovoltaics. Background technique [0002] In order to reduce the cost of electricity purchase, the photovoltaic capacity installed by the incremental distribution network operator is relatively large, but when the photovoltaic output is large and the load is small, the photovoltaic shows a high penetration rate. At this time, the distribution network is prone to occur along the feeder The power is reversed, and even the voltage exceeds the specified upper limit. Contents of the invention [0003] The purpose of the present invention is to provide a day-ahead optimal scheduling method for an incremental distribution network containing high-permeability distributed photovoltaics. [0004] For this reason, technical scheme of the pre...

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Problems solved by technology

[0002] In order to reduce the cost of electricity purchase, the incremental distribution network operators install larger photovoltaic capacity, but when the photovoltaic output is large and the load is small, the photovoltaic presents a high penetration rate access scenario. At this time, the distribution network is prone to occur along the feeder The power is sent backwards, and even the voltage exceeds the specified upper limit.

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