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Smart power grid vulnerability analysis method and device for load transfer influence effect

A smart grid and load transfer technology, applied in electrical testing/monitoring, instruments, control/regulation systems, etc., can solve the problem of not considering local acceleration or slowing down, only focusing on the global final result of network failure, and not considering the impact of load transfer effects

Pending Publication Date: 2022-01-11
STATE GRID SICHUAN ECONOMIC RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In addition to the above defect of not considering the effect of load transfer, the traditional network vulnerability analysis method also has a major defect, that is, it only pays attention to the global final result of network failure, while ignoring the local evolution process of network failure
They only correlate network vulnerability with the final consequences of node failure, and do not consider the influence of the failure node and its subsequent associated failure nodes on the evolution process of the final consequences under the interdependent coupling of "information flow-energy flow" in the smart grid. local speed-up or slow-down

Method used

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  • Smart power grid vulnerability analysis method and device for load transfer influence effect
  • Smart power grid vulnerability analysis method and device for load transfer influence effect
  • Smart power grid vulnerability analysis method and device for load transfer influence effect

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Embodiment 1

[0058] Vulnerability analysis method according to the present embodiment, a smart grid to provide a load transfer Effects such as figure 1 , The method comprising the steps of:

[0059] In step S1, the coupling network topology model dependent build smart grid to the power network and the information network, acquiring load transfer Effects of the failed node;

[0060] Step S2, in accordance Effects load transfer failed node, acquires the failure node chain fault propagation process, the establishment of fault tree model fault propagation process in accordance with cascading failures during the failed node, according to the fault tree model, acquired failed node linkage failure fault propagation velocity of propagation, propagation velocity according to the fault, the local node, a fault on vulnerable smart grid load transfer node;

[0061] Step S3 The Effects load transfer failed node, obtaining cascading failure process after the failed node fails to establish the fault tree mod...

Embodiment 2

[0136] In the second embodiment further optimized based on the first embodiment, there is provided a vulnerability analysis means for performing an analytical method mentioned embodiment, the apparatus comprising:

[0137] Acquiring module, used to construct network topology model dependent coupling the smart grid to the power network and the information network, acquiring load transfer Effects of the failed node;

[0138] Local effects module, node failure according Effects of load transfer, the node chain, a fault propagation process fault, fault propagation fault tree model establishment procedure according to the process of cascading failures in the node failure, according to the fault tree model, acquires the failed node fault propagation velocity cascading failures in the process, according to the fault propagation velocity, local nodes, a fault on vulnerable smart grid load transfer node;

[0139] Effect global module for load transfer Effects node failure, the failure chai...

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Abstract

The invention discloses an intelligent power grid vulnerability analysis method and device based on a load transfer influence effect, and solves the problem that an existing analysis method only pays attention to network disability global final result measurement and lacks measurement of a local evolution process of the network disability global final result measurement. The method comprises the following steps: establishing a dependent coupling network topology model of a smart power grid, and obtaining an influence effect of fault node load transfer; according to the influence effect of the fault node load transfer, obtaining the local influence of the fault node load transfer on the node vulnerability of the intelligent power grid; according to the influence effect of the fault node load transfer, obtaining the global influence of the fault node load transfer on the node vulnerability of the intelligent power grid; and presetting control parameters, and obtaining comprehensive evaluation of the node vulnerability of the intelligent power grid according to the fault propagation speed, the criticality and the control parameters. The method analyzes the vulnerability of the node by comprehensively considering the influence of the node fault on the local network and the global network, and is more in line with the actual situation of the smart power grid.

Description

Technical field [0001] The present invention relates to the safe operation of smart grid, and more particularly, it involves a smart grid fragility analysis method and apparatus for load transfer effects. Background technique [0002] As the power system intelligent and interconnection continues to expand, communication and information technology is continuously in-depth in power systems, and the relationship between "information flow ~ energy stream" between smart grid control systems and power systems is gradually deepened. However, this dependency is greatly enabled to give a smart grid more fragile while optimizing the operation and control efficiency of power systems, and has become one of the greatest incentives of chain faults. Therefore, how to suppress and block chain faults into enhanced robustness of intelligent grids, and reduce the technical core issues of smart grid fragility. [0003] Network vulnerability has become an important research content in the field of sm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B23/02
CPCG05B23/0243G05B2219/24065
Inventor 罗劲瑭胥威汀侯新安陈一鸣马天男杨宇玄乔云池阳小龙张晨琳吴明埝
Owner STATE GRID SICHUAN ECONOMIC RES INST
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