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A Distributed Economic Scheduling Method of Power System Considering Unbalanced Communication Network

A communication network and power system technology, applied in the field of power system economic dispatch, can solve problems such as distributed economic dispatch of unbalanced communication networks, and achieve the effects of good scalability, strong robustness, and wide applicability

Active Publication Date: 2017-06-16
NANJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to solve the distributed economic scheduling problem in the power system considering the unbalanced communication network under the condition that the generator satisfies certain operating constraints and reduces the communication cost

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  • A Distributed Economic Scheduling Method of Power System Considering Unbalanced Communication Network
  • A Distributed Economic Scheduling Method of Power System Considering Unbalanced Communication Network
  • A Distributed Economic Scheduling Method of Power System Considering Unbalanced Communication Network

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Embodiment Construction

[0039] 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.

[0040] Such as Figure 8 As shown, the present invention provides a distributed economic dispatching method of a power system considering an unbalanced communication network, and the specific process is as follows:

[0041] First, use graph G to establish a model of the elements (busbar and transmission line) and the relationship between elements in the power system (information exchange between elements through communication facilities). Define G=(ν,ε,A), ν={ν 1 ,ν 2 ,...,ν nB} represents a vertex set, is the set of different vertex ...

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Abstract

The invention provides a power system distributed economic dispatching method taking an unbalanced communication network into consideration. An average consistency algorithm is used creatively in the invention. By designing an update matrix of the unbalanced communication network, the improved consistency algorithm can adapt to the unbalanced communication network, and the marginal cost can converge eventually. As each node has respective load and power information, each node has respective power deviation. An improved incremental cost consistency algorithm is adopted to make the incremental cost of generators consistent. By adopting the distributed control algorithm, the economic scheduling problem of the unbalanced communication network in the power system can be solved under the condition of reducing the communication cost.

Description

technical field [0001] The invention relates to a distributed algorithm problem of an electric power system economic dispatch problem, in particular to a distributed economic dispatch method of a power system considering an unbalanced communication network, and belongs to the technical field of electric power system economic dispatch. Background technique [0002] Emerging smart grid architectures help to further explore some of the fundamental challenges in power distribution systems, such as economic dispatch (ED). Economic dispatch means that the generators allocate the total required power to each generator under the condition that the operating cost is the lowest and the power constraints of the generators are met. Traditional solutions include λ iteration method and gradient search method, which are mainly used to solve the situation when the cost function is a convex function. Other more complex methods are used to solve the case when the cost function is non-convex,...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/00H02J3/46
CPCH02J3/00H02J3/46H02J2203/20
Inventor 赵善驰岳东吴英俊
Owner NANJING UNIV OF POSTS & TELECOMM
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