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Distributed photovoltaic power supply medium and long term locating and sizing method based on NSGA-III algorithm

A technology of distributed photovoltaic, site selection and capacity determination, applied in photovoltaic power generation, resources, computing and other directions, can solve problems affecting power quality, unsatisfactory photovoltaic installed capacity, actual needs of distribution network, etc., to improve scientificity, improve Power supply stability and the effect of improving the pass rate

Active Publication Date: 2021-11-23
JIANGSU ELECTRIC POWER CO
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Problems solved by technology

The increase in load may cause the original photovoltaic installed capacity to fail to meet the actual demand of the distribution network, thus affecting the power quality

Method used

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  • Distributed photovoltaic power supply medium and long term locating and sizing method based on NSGA-III algorithm
  • Distributed photovoltaic power supply medium and long term locating and sizing method based on NSGA-III algorithm
  • Distributed photovoltaic power supply medium and long term locating and sizing method based on NSGA-III algorithm

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Embodiment Construction

[0050] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0051] refer to figure 1 As shown, it is the overall flow chart of the medium- and long-term site selection and capacity determination method for distributed photovoltaic power sources based on the NSGA-III algorithm of the present invention. Firstly, a distributed photovoltaic site selection optimization model is constructed with probabilistic voltage sensitivity and network loss as the objective function, and the Pareto solution set is obtained by using the NSGA-III algorithm for optimization, and the multiple objectives are converted into a single objective by using the AHP, so that The optimal scheme of photovoltaic access nodes is preliminarily obtained; secondly, on the basis of determining the photovoltaic site selection scheme, a distributed photovoltaic site selection capacity optimization model is constructed with the objective func...

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Abstract

The invention discloses a distributed photovoltaic power supply medium and long term locating and sizing method based on an NSGA-III algorithm. The method comprises the following steps: constructing a distributed photovoltaic site selection optimization model by taking probability voltage sensitivity and network loss as objective functions; and constructing a distributed photovoltaic site selection capacity optimization model by using a voltage out-of-limit risk, annual network loss and a photovoltaic installed capacity objective function. In order to solve the problem that an existing optimization algorithm is poor in effect when facing a multi-objective optimization problem, an NSGA-III algorithm is adopted to solve an optimization model, and a Pareto solution set of the multi-objective optimization problem is generated. Besides, in consideration of the influence of medium and long term load change on an optimization result, the method carries out rolling solution on the optimization model by taking a year as a unit, and provides a decision basis for the future photovoltaic installed capacity expansion of the region.

Description

technical field [0001] The invention relates to the technical field of photovoltaic planning, in particular to a medium- and long-term site selection and capacity determination method for distributed photovoltaic power sources based on the NSGA-III algorithm. Background technique [0002] For the 10kV distribution network, the access of distributed photovoltaic power sources has changed the current situation of one-way flow of power flow, and the original radiation-type passive grid has become an active ring network. Compared with the radial distribution network, the planning of the distribution network with distributed generation is more difficult. The research results show that the voltage change of the load node is closely related to the distance between the distributed power access point and the bus, the access capacity, and the ratio of active power and reactive power. Reasonable planning of the distributed power access location, access capacity, and effective coordina...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/38H02J3/46G06Q10/04G06Q10/06G06Q50/06G06N3/12
CPCH02J3/381H02J3/46G06Q10/04G06Q10/06313G06Q10/06312G06Q50/06G06N3/126H02J2300/24H02J2203/10H02J2203/20Y04S10/50
Inventor 吴予乐黄振勇濮实蒋玮陈颢元王秋军倪黎包成
Owner JIANGSU ELECTRIC POWER CO
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