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Method for economic dispatch of virtual power plant based on distributed gradient algorithm

A virtual power plant and gradient algorithm technology, applied in computing, instrumentation, data processing applications, etc., can solve the problems of poor flexibility of centralized scheduling, easy to be affected by single point of failure, huge investment, etc., to reduce optimization time and calculation amount. Small, easy-to-use effects

Active Publication Date: 2016-09-21
NANJING UNIV OF POSTS & TELECOMM
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AI Technical Summary

Problems solved by technology

Due to the large amount of data transmission and the inevitable time lag and delay of the communication system, it is difficult for the centralized algorithm to provide real-time optimal control
In addition, centralized scheduling has poor flexibility and is vulnerable to single point of failure
In reality, distributed energy resources are geographically dispersed, and there will be more difficulties in adopting centralized dispatching: to transmit information of each distributed energy source (including its output, cost, and income) to the dispatching center, and between the dispatching center and the distribution center. The establishment of high-bandwidth communication channels between various types of energy sources requires huge investment and will also bring disasters of dimensionality

Method used

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  • Method for economic dispatch of virtual power plant based on distributed gradient algorithm
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  • Method for economic dispatch of virtual power plant based on distributed gradient algorithm

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Embodiment Construction

[0051] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0052] First of all, each distributed energy source can be regarded as a generator, and the generator can be regarded as a vertex of a certain graph. Then, all the distributed generators in the virtual power plant can form a graph, the vertices in the graph can represent a generator, the position of the vertices represents the actual geographic location of the generator, and the edges between the vertices represent whether there is communication between the generators Relationship, if there is a connection between the vertices, it means tha...

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Abstract

The invention provides a method for economic dispatch of virtual power plant based on distributed gradient algorithm, comprising the following steps: obtaining data information of adjacent energy sources through distributed scheduling, combining a gradient algorithm for iterations and updating, satisfying both equality constraint and inequality constraint, and performing power exchange with a main power grid. With the method, it is possible to reduce the erection and maintenance costs of communication lines. In addition to that, with small storage capacity and simple operation, optimization time can be considerably shortened and communication costs are reduced.

Description

technical field [0001] The invention belongs to the technical field of economic dispatching of virtual power plants, in particular to a method for economic dispatching of virtual power plants based on a distributed gradient algorithm. Background technique [0002] Distributed energy sources are scattered in space, and modern intelligent power distribution systems can integrate these energy sources to increase power to power users. Distributed energy has two types of generator sets, that is, distributed generators, such as diesel generators, wind generators, photovoltaic power generation systems, etc., and distributed energy storage devices, such as batteries, pumped storage devices, etc. Fully developing these distributed energy sources can improve energy utilization efficiency, save fossil energy, and reduce environmental pollution. In order to effectively utilize these distributed energy sources, the concept of virtual power plants is proposed. A virtual power plant can ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/04G06Q50/06
CPCG06Q10/04G06Q50/06Y02E40/70Y04S10/50
Inventor 曹驰谢俊岳东黄崇鑫翁盛煊解相鹏王晓亮
Owner NANJING UNIV OF POSTS & TELECOMM
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