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A Distributed Automatic Dispatching Method of Power System with Accurate Calculation of Network Loss Capability

A power system and automatic scheduling technology, applied in the direction of single-network parallel feeding arrangement, etc., can solve problems such as stability problems and low efficiency of centralized control, achieve many nodes, good scalability, and solve topology changes Effect

Active Publication Date: 2016-10-12
NANJING UNIV OF POSTS & TELECOMM
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AI Technical Summary

Problems solved by technology

The central controller usually needs high-bandwidth communication facilities to collect the information of the whole system, and also needs a high degree of connectivity, so when a point of failure occurs, there will be stability problems
Moreover, the topology of the future power grid and communication network is variable, which makes the efficiency of centralized control very low

Method used

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  • A Distributed Automatic Dispatching Method of Power System with Accurate Calculation of Network Loss Capability
  • A Distributed Automatic Dispatching Method of Power System with Accurate Calculation of Network Loss Capability
  • A Distributed Automatic Dispatching Method of Power System with Accurate Calculation of Network Loss Capability

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Embodiment Construction

[0033] 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.

[0034] Such as Figure 9 As shown, the present invention provides a distributed automatic dispatching method of a power system capable of accurately calculating network loss, and the specific process is as follows:

[0035] First, G is used to establish the model of the elements (busbar and transmission line) and the relationship between elements (the elements exchange information through communication facilities) in the power system. Define G=(v,ε,A), v={v 1 ,v 2 ,...,v nB} represents a vertex set, is the set of different vertex pair...

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Abstract

The invention discloses a distributed automatic dispatching method of a power system capable of accurately calculating network loss. The invention creatively uses the power flow tracking method and the electrical subdivision method to obtain the power loss of each generator, and provides a more An accurate method for calculating network loss, the present invention uses a two-layer consistency algorithm, so that the marginal cost eventually tends to be consistent, and each node has its own load and power generation information, resulting in their own power deviation, which is relatively low The layer uses the average consistency to ensure the consistency of the power deviation, and the higher layer uses the incremental cost consistency to realize that the incremental cost of each generator tends to be consistent. The present invention can reduce the communication cost through the distributed control algorithm. Solving economic dispatch problems in power systems.

Description

technical field [0001] The invention relates to a generator power control method in a power system, in particular to a distributed dispatching scheme of a power system capable of accurately calculating network loss, and belongs to the technical field of power system economic dispatching. 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 generator sets allocate the total required power to each generator set 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, including genetic algorithm (GA), parti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/46
Inventor 赵善驰吴英俊岳东
Owner NANJING UNIV OF POSTS & TELECOMM
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