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Symmetric entropy-based key line identification method for two roles of power transmission network

A key line and identification method technology, applied in the direction of instruments, technical management, data processing applications, etc., can solve the problem that the two types of roles of transmission lines cannot be effectively distinguished

Active Publication Date: 2018-07-27
JIANGXI SCI & TECH NORMAL UNIV
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a key line identification method for two types of roles in the transmission network based on symmetric entropy, which solves the problem that the existing identification methods cannot effectively distinguish the two types of roles of the transmission line, making the evaluation more refined

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  • Symmetric entropy-based key line identification method for two roles of power transmission network
  • Symmetric entropy-based key line identification method for two roles of power transmission network
  • Symmetric entropy-based key line identification method for two roles of power transmission network

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Embodiment Construction

[0050] to attach figure 2 The IEEE 39 node system diagram is an example to describe the present invention in detail, the system has 39 busbar nodes, 46 lines and 10 generators; the information data of the input IEEE 39 node system includes: the input power when the generator is running normally, System load data, line reactance and maximum transmitted power ( P M1 , P M2 ,…, P M46 ), the bus node type, and number the lines 1, 2,..., 46; calculate the DC power flow of the transmission network, and obtain the active power values ​​of the 46 lines when the transmission line is in normal operation; use the maximum transmission power of the line and the normal operation active power, through a i =| P i | / P Mi ( i =1,2,…,46) respectively calculate the evaluation quantization values ​​of 46 lines under normal operation; use the easy-to-spread power quantization set={ a 1 , a 2 ,…, a N }\ a i ( i =1,2,...,46) calculate the easily propagated power quantization s...

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Abstract

The invention discloses a symmetric entropy-based key line identification method for two roles of a power transmission network. The method comprises the steps of obtaining related data information ofthe power transmission network; establishing a power assessment quantitative set of the easily propagated and easily infected two roles of a power transmission line during normal running; establishinga power assessment quantitative set of the easily propagated and easily infected two roles of the power transmission line during running in fault; creating a symmetric entropy formula for the easilypropagated and easily infected two roles of the power transmission network; and identifying key lines of the easily propagated and easily infected two roles of the power transmission network by utilizing a symmetric entropy. By creating the symmetric entropy, the easily propagated and easily infected two roles of the key lines are distinguished; and by distinguishing the two roles, the effects ofdifferent lines of different roles in a cascading fault process can be revealed, so that the key line identification is finer.

Description

technical field [0001] The invention belongs to the field of power system safety evaluation, and in particular relates to a key line identification method for two types of roles in a power transmission network based on symmetric entropy. Background technique [0002] With the continuous expansion of power demand, the power grid plays an increasingly important role in social production and life. Therefore, how to ensure the efficient, safe and stable operation of the power grid has become one of the key issues. Although the protection and control system can effectively improve the reliability of the safe operation of the power grid, there are still many "low-probability, high-risk" blackouts (cascading failures), which pose a serious threat to national security and economic development. From the perspective of the development process of these power outages, it is often due to the failure of a certain component that causes the successive failures of other components and finall...

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Application Information

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IPC IPC(8): G06Q10/06G06Q50/06
CPCG06Q10/06393G06Q50/06Y02P90/82
Inventor 刘渊韦晓广陶嘉刘虹彭燕谢源
Owner JIANGXI SCI & TECH NORMAL UNIV