Information Trust Institute (ITI) Interface

1. Information Trust Institute (ITI) Interface Matt Davis Zeb Tate

2. Outline • TCIP • SCADA Testbed • Client Development • Server Development • SCADA Protocols • Protocol Conversion

3. TCIP • TCIP means Trustworthy Cyber Infrastructure for the Power Grid • Purpose: • “TCIP is working to provide the fundamental science and technology needed to create an intelligent, adaptive power grid that can survive malicious adversaries, provide continuous delivery of power, and support dynamically varying trust requirements.” • http://www.iti.uiuc.edu/TCIP.html

4. TCIP Testbed Development • A testbed is needed to simulate interactions between power system elements, operators, and cyber-infrastructure (network communications) • The testbed must also be easy to customize with a wide variety of network protocols and cross-platform

5. TCIP Testbed

6. Client Software in Action

7. Client Overview • The client program is used to retrieve data, display data, and perform control actions in response to power system events • “Dumb” client • Simulation of the power system and underlying communications networks is done outside of the client software • Mimics control center display

8. Client Features • Ability to retrieve data either asynchronously or at periodic intervals • Written in Java, so cross-platform • Can import one-line diagrams from PowerWorld • Simple control actions (e.g., opening or closing a line) are implemented with simple point-and-click interface

9. Client Control in Action

10. Server Software in Action

11. Server Overview • A special version of PowerWorld Simulator was developed that allows power system data to be retrieved in real time over a network • Allows multiple connections from multiple clients simultaneously, with both incoming and outgoing data streams • Updates automatically after receiving commands

12. Server Data Provided • Bus voltages and phase angles • Line flows • Line status • Generator output • Generator status

13. Server Control Actions • Open/close lines • Connect/disconnect generators • Plan is to add ability to perform more complex control actions • Changing load • Changing switched shunt settings • Generator dispatch • Basic idea is to eventually allow full breadth of control currently available to power system operators

14. SCADA Protocols • Present Day • Register based • Commonly uses dedicated serial communication lines • e.g. Modbus 2.0 • Next Generation • Based on Common information model • Uses switched packet networks • e.g. IEC 61850

15. Present Day Problems • Register based configuration prone to error (accessing the wrong register gets you the wrong data) • Multitude of proprietary SCADA protocols increases complexity • Configuration is closely tied to the hardware

16. Protocol Converter • Converts between custom server protocol and actual SCADA protocols • Allows for testbed interaction with real SCADA devices (e.g. relays) • Enables simulation of network attacks in combination with RINSE network emulator developed by David Nichol’s research group

17. The End