Nonlinear integer programming-based distribution network load transfer optimization model with distributed power supplies

A technology of distributed power supply and integer programming, applied in the field of power grid

Inactive Publication Date: 2016-07-13
SOUTH CHINA UNIV OF TECH +1
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Problems solved by technology

The large-scale entry of distributed power into the power grid, especially on the side of the distribution network, will bring great challenges to the stability, security and reliability of the power grid

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  • Nonlinear integer programming-based distribution network load transfer optimization model with distributed power supplies

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Embodiment Construction

[0012] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0013] The distribution network load transfer optimization model based on nonlinear integer programming, including distributed power generation, specifically includes the following contents:

[0014] (1) Assign a value of 0 / 1 to the switch opening and closing states of all branches in the distribution network, and store the value in the branch state matrix X. X is a diagonal matrix composed of branch states as diagonal elements. The matrix The diagonal element of is x k , where l is the total number of branches in the network, when the branches are running x k =1(k=0,1,…,l), when the branch is disconnected, x k =0, x when the branch is closed k =1.

[0015] (2) Distributed power supply is an asynchronous generator type...

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Abstract

The invention provides a nonlinear integer programming-based distribution network load transfer optimization model with distributed power supplies. In view of access of the distributed power supplies, ideas of a branch switch state matrix, a path, a reachability matrix and a loop is introduced, a path reachability and node branch number relationship is used for describing tree topology constraints and power flow constraints for the distribution network with the distributed power supplies, a load transfer optimization model when the distribution network with the distributed power supplies fails is obtained, an objective function is the sum of absolute values of differences between known load power of all nodes and node calculation injection power, constraint conditions comprise the tree topology constraints, the power flow constraints, ampacity constraints of a feeder line and node permissible voltage offset constraints, and a standard nonlinear integer programming analytic form is provided. The distributed power supply considered in the invention is an asynchronous generator-type distributed power supply with determined active power and stably-kept power factor, and a PQ node with negative load is processed.

Description

technical field [0001] The patent of the present invention is a distribution network load transfer optimization model based on nonlinear integer programming including distributed power supply, which belongs to the technical field of electric power grid. Background technique [0002] The third industrial revolution will be the impact of the Internet on the energy industry. As the core of the third industrial revolution, the Energy Internet takes the power system as the core, is based on the Internet and other cutting-edge information technologies, uses distributed renewable energy as the main primary energy, and is deeply integrated with other systems such as natural gas networks and transportation networks. And form a new energy utilization system. The new energy system will be able to realize the coordinated development of energy efficiency, energy environment, energy structure, and energy security, establish a sustainable energy development system based on energy conserva...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/00G06F17/50G06Q50/06
CPCG06Q50/06G06F30/367H02J3/0073Y02E40/70Y04S10/50
Inventor 陈东新文林森
Owner SOUTH CHINA UNIV OF TECH
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