NSF-PEEC Workshop of Power and Energy Education
Transforming Cyber-Physical Systems Education with
Emphasis on the Power Grid
Wei Sun, Assist. Prof., South Dakota State Univ.
Yunhe Hou, Assist. Prof., The Univ. of Hong Kong
Chee-Wooi Ten, Assist. Prof., Michigan Tech. Univ.
Arlington, VA, July 26, 2014
South Dakota State University
Electrical Engineering and Computer Science



A four-layer system, including cyber-vulnerability
evaluation, emergency control, restoration, and
planning, is designed to provide remediation
strategies for protecting and restoring power
systems after the attack incidents.
A strategic defense system will be developed to
enhance system reconfigurability and survivability
from disruptive switching actions by a cyber
intruder.
Joint education and research activities among three
universities in U.S. and China.
South Dakota State University
Electrical Engineering and Computer Science
2
Strategic Defense
System
CyberVulnerability
Evaluation
Emergency
Strategy
Restoration
Strategy
Planning
Strategy
Identify
vulnerable
components
Defensive
emergency
control
Real-time
adaptive
actions
Optimal
cyber- syst.
planning
South Dakota State University
Electrical Engineering and Computer Science
3
IEEE 30-bus system is used for illustration of the strategic
defense system
Cyber-Vulnerability Evaluation provides the list of substations
1.
with high risk: substations 9, 12, 25, 27.
Emergency Control provides optimal defensive actions to reduce
the probabilities of being intruded successfully.
Restoration Strategy provides optimal restoration actions, and
identify more vulnerable substations 12 and 27.
Planning Strategy provides the optimal planning to minimize the
risk of potential attacks subject to available resources.
2.
3.
4.
Compration of Generation Capability Curves
4
350
2.9
Comparison of Two Vulnerbale Substations
x 10
Substation 12
Substation 27
2.8
Equivalent loss of load
59
58
250
200
150
100
Base Case,Lose Sub 9,Lose Sub 25
Lose Sub 12
Lose Sub 27
50
57
Optimal
Value
System Generation Capability (MWh)
300
Generation Output (MW)

0
2.7
2.6
2.5
2.4
2.3
2.2
2.1
2
1.9
0
5
10
15
Possible Strategies
20
25
30
Restoration Time (pu)
35
40
45
50
1
2
3
4
5
Substation Restored Time (hr)
6
South Dakota State University
Electrical Engineering and Computer Science
4