TY - JOUR
T1 - Learning Behavior of Distribution System Discrete Control Devices for Cyber-Physical Security
JF - IEEE Transactions on Smart Grid
Y1 - 2020/01//
SP - 749
EP - 761
A1 - Ciaran Roberts
A1 - Anna Scaglione
A1 - Mahdi Jamei
A1 - Reinhard Gentz
A1 - Sean Peisert
A1 - Emma M. Stewart
A1 - Chuck McParland
A1 - Alex McEachern
A1 - Daniel B. Arnold
AB - Conventional cyber-security intrusion detection systems monitor network traffic for malicious activity and indications that an adversary has gained access to the system. The approach discussed here expands the idea of a traditional intrusion detection system within electrical power systems, specifically power distribution networks, by monitoring the physical behavior of the grid. This is achieved through the use of high-rate distribution Phasor Measurement Units (PMUs), alongside SCADA packets analysis, for the purpose of monitoring the behavior of discrete control devices. In this work we present a set of algorithms for passively learning the control logic of voltage regulators and switched capacitor banks. Upon detection of an abnormal operation, the operator is alerted and further action can be taken. The proposed learning algorithms are validated on both simulated data and on measured PMU data from a utility pilot deployment site.
VL - 11
IS - 1
JO - IEEE Trans. Smart Grid
ER -
TY - JOUR
T1 - Lossy DistFlow Formulation for Single and Multiphase Radial Feeders
JF - IEEE Transactions on Power Systems
Y1 - 2019/11//
SP - 1758
EP - 1768
A1 - Eran Schweitzer
A1 - Shammya Saha
A1 - Anna Scaglione
A1 - Nathan G. Johnson
A1 - Daniel B. Arnold
AB - A line loss approximation via parametrization is developed to improve performance of the simplified Baran and Wu DistFlow method, while maintaining a linear set of equations. The approach is evaluated on thousands of training feeders that are created to determine a numerically optimal setting for the parameterization. Feeders are generated using recent advances in synthetic network test case generation. The problem is formulated with the same structure as the simplified DistFlow, yet is more accurate given that line losses are explicitly expressed and quantified. The single-phase methodology is extended to multiphase systems by formulating matrix-vector equations that maintain an analogy to their single-phase counterpart. Results with approximated line losses are shown to also improve the accuracy of multiphase distribution system calculations.
VL - 35
IS - 3
JO - IEEE Trans. Power Syst.
ER -