Dissertation
Cyber-Physical System Security of a Smart Grid
Doctor of Philosophy (PhD), Washington State University
01/2019
Handle:
https://hdl.handle.net/2376/118451
Abstract
The integration of computing and communication capabilities with the power grid has led to numerous vulnerabilities in the Cyber-Physical Systems (CPSs). This cyber security threat can significantly impact the physical infrastructure, economy, and society. In traditional Information Technology (IT) environments, there are already abundant attack cases demonstrating that unauthorized users have the capability to access and manipulate sensitive data from a protected network domain. Electric power grids have also heavily adopted IT to perform real-time control, monitoring, and maintenance tasks. In both 2015 and 2016, two sophisticated cyber attack events targeted Ukrainian’s power grid, causing wide area power outages. It highlights the importance of investment in cyber security against intruders. In order to address the cyber security issues for today’s communication technologies, a reliable cyber defense system has become an essential element for the power grids. This dissertation presents research results of the CPS security studies for different power system sections, including Substation Automation System (SAS) and Advanced Metering Infrastructure (AMI). To understand the vulnerabilities of communication systems and interactions between cyber and physical systems, a survey of the state-of-the-art on smart grid technologies has been conducted. It considers the existing cyber vulnerabilities in power grids and establishes solutions against the cyber attacks. However, the existing cyber protection systems can not cover all sections of a smart grid by one defense measure. This study proposes two Intrusion Detection Systems (IDSs) to enhance the cyber security for SAS and AMI. In order to analyze the impact of cyber attacks and test the performance of the proposed IDSs, a Hardware-In-the-Loop (HIL) testbed has been developed to provide a co-simulation environment between cyber and physical systems.
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Details
- Title
- Cyber-Physical System Security of a Smart Grid
- Creators
- Chih-Che Sun
- Contributors
- Chen-Ching Liu (Advisor)Anurag K Srivastava (Committee Member)Adam Hahn (Committee Member)
- Awarding Institution
- Washington State University
- Academic Unit
- Electrical Engineering and Computer Science, School of
- Theses and Dissertations
- Doctor of Philosophy (PhD), Washington State University
- Number of pages
- 118
- Identifiers
- 99900581415701842
- Language
- English
- Resource Type
- Dissertation