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An Economic Dispatch Method of Power System Based on Event-Triggered Consensus Algorithm

An event-triggered, power system technology, applied in the direction of single-network parallel feeding arrangement, etc., can solve the problems affecting the stability and security of the power system, failure of economic dispatching strategies, communication time lag and packet loss, etc., to ensure safe and stable operation. , The effect of solving the distributed economic dispatching problem of the power system and reducing the pressure on the communication network

Active Publication Date: 2018-01-09
NANJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

In the future power system environment, the number of distributed energy sources in the power grid will increase day by day, and the real-time continuous information interaction of a large number of power generation units will bring severe challenges to the limited bandwidth resources of the communication network. The transmission of excessive information will cause such as communication time lag And packet loss and other phenomena, and may lead to the failure of the entire economic dispatch strategy, seriously affecting the stability and security of the power system, there is still a lack of effective solutions to such problems

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  • An Economic Dispatch Method of Power System Based on Event-Triggered Consensus Algorithm
  • An Economic Dispatch Method of Power System Based on Event-Triggered Consensus Algorithm
  • An Economic Dispatch Method of Power System Based on Event-Triggered Consensus Algorithm

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[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] The present invention takes a system composed of 6 generator sets as an example, and its communication network topology relationship is as follows figure 1 As shown, the specific implementation steps are as follows Figure 5 Shown:

[0035] 1) Set system parameters: given the number of generator sets in the power system n=6, the total power demand P D = 1050MW.

[0036] 2) Let the cost function of the i-th generator set be:

[0037]

[0038] Among them, P Gi is the output power of the i-th generator set, parameter α i , β i ,...

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Abstract

The present invention proposes an event-triggered consensus algorithm-based economic scheduling method for power systems. Each generator set in the power system uses its own information and the information of other generator sets adjacent to it in the communication network to construct an incremental cost-related The distributed event trigger mechanism and the incremental cost consistency update algorithm based on this mechanism realize the optimization of the total power generation cost under the premise of satisfying the power balance of the power system. On the basis of ensuring the effective completion of economic scheduling tasks, the present invention realizes the on-demand transmission of information between generator sets, greatly reduces the pressure on the communication network, avoids the congestion of the communication network, and ensures the safe and stable operation of the power system.

Description

technical field [0001] The invention belongs to the field of power system economic dispatching, in particular to an event-triggered consensus algorithm-based power system economic dispatching method. Background technique [0002] Economic dispatch is a basic problem in the research and application of power systems. Under the circumstances of various system constraints, various numerical algorithms and optimization techniques are used to reduce the overall power generation cost of the power system. Traditional economic dispatch is usually carried out under a centralized control framework. Under this framework, the centralized control center obtains the overall state of the power system, calculates the optimal target value through the designed optimization algorithm, and further distributes the target value to the power system. Each power generation unit to complete the economic dispatch target. However, for the power system where a large number of distributed power sources a...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/38
Inventor 翁盛煊岳东解相朋张慧峰黄崇鑫
Owner NANJING UNIV OF POSTS & TELECOMM
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