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Anomaly Detection for Power Grid Based on Network Flow

  • Lizong Zhang
  • Xiang Shen
  • Fengming Zhang
  • Minghui Ren
  • Bo Li
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 11344)

Abstract

As an important part of the national infrastructure, the power grid is facing more and more network security threats in the process of turning from traditional relative closure to informationization and networking. Therefore, it is necessary to develop effective anomaly detection methods to resist various threats. However, the current methods mostly use each packet in the network as the detection object, ignore the overall timing pattern of the network, cannot detect some advanced behavior attacks. In this paper, we introduce the concept of network flow, which consists of the same end-to-end network packets, besides the network flow fragmentation divides the network flow into pieces at regular intervals. We also propose a network flow anomaly detection method based on density clustering, which uses bidirectional flow statistics as features. The experimental result demonstrate that the methodology has excellent detection effect on large-scale malicious traffic and injection attacks.

Keywords

Power grid Anomaly detection Network flow Density cluster 

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Copyright information

© Springer Nature Switzerland AG 2018

Authors and Affiliations

  • Lizong Zhang
    • 1
  • Xiang Shen
    • 1
  • Fengming Zhang
    • 1
  • Minghui Ren
    • 1
  • Bo Li
    • 2
  1. 1.State Grid Shaoxing Power Supply CompanyZhejiangChina
  2. 2.School of Computer Science and EngineeringBeihang UniversityBeijingChina

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