1. SUBSTATION MODELING: PROTECTION AND AUTOMATION
JOEL MCDANIEL – SPRING TERM: 2014
SEMESTER PROJECT FOR ECE-544
SUPERVISORY CONTROL AND CRITICAL INFRASTRUCTURE SYSTEMS
UNIVERSITY OF IDAHO – DEPARTMENT OF ELECTRICAL & COMPUTER ENGINEERING

2. THIS PRESENTATION COVERS BASIC ASPECTS OF
POWER DISTRIBUTION SUBSTATION PHYSICAL LAYOUT
POWER SYSTEM MODELING
COMMON POWER SYSTEM STUDIES
HUMAN-MACHINE INTERFACE (HMI) STRUCTURE AND PURPOSE

3. SUBSTATION COMPONENTS AND OPERATION
UTILITY SUPPLY
HIGH SIDE BREAKER WITH PROTECTIVE RELAY
TRANSFORMER WITH PROTECTIVE RELAY
LOW SIDE BREAKER WITH PROTECTIVE RELAY
4.16kV BUS
FEEDER BREAKERS WITH PROTECTIVE RELAYS

4. Single Line Diagram of Substation as Rendered by ETAP v 12
Single Line Diagram of Substation as Rendered by ETAP v 12.5 Power System Modeling Software

5. POWER SYSTEM MODELING WHY DO WE MODEL POWER SYSTEMS? PLANNING
PARAMETER AND DATA ESTIMATION
EQUIPMENT EVALUATION
HOW DO WE MODEL POWER SYSTEMS?
HAND CALCULATIONS
MODELING SOFTWARE (ETAP, SKM, ASPEN, …..)

6. COMMON POWER SYSTEM STUDIES
LOAD FLOW STUDY
WHAT IS LOAD FLOW?
HOW IS LOAD MEASURED?
END GOAL OF A LOAD FLOW STUDY?
SHORT CIRCUIT STUDY
WHAT IS SHORT CIRCUIT STUDY?
HOW IS SHORT CIRCUIT CURRENT DETERMINED?
HOW IS THIS INFORMATION USEFUL?
PROTECTIVE DEVICE COORDINATION
WHAT IS A PROTECTIVE DEVICE?
HOW AND WHY DO WE COORDINATE PROTECTIVE DEVICES?

7. LOAD FLOW RESULTS (ONE-LINE DIAGRAM WITH LOAD FLOW RESULTS)

8. SHORT CIRCUIT RESULTS (ONE-LINE DIAGRAM WITH SHORT CIRCUIT RESULTS)

9. RELAY COORDINATION STUDY TIME CURRENT COORDINATION CURVES
TRANSFORMER PROTECTION AND THE 4.16kV MAIN BREAKER PROTECTION

10. RELAY COORDINATION STUDY TIME CURRENT COORDINATION CURVES (Continued)
COORDINATION BETWEEN 4.16kV MAIN AND MOTOR FEEDER RELAY

11. RELAY COORDINATION STUDY TIME CURRENT COORDINATION CURVES (Continued)
COORDINATION BETWEEN 4.16kV MAIN AND STATIC FEEDER RELAY

12. RELAY COORDINATION STUDY TIME CURRENT COORDINATION CURVES (Continued)
GROUND FAULT COORDINATION

13. RELAY COORDINATION STUDY TIME CURRENT COORDINATION CURVES (Continued)
NEUTRAL ELEMENT COORDINATION

14. DEVICE COMMUNICATIONS USING WONDERWARE INTOUCH HMI DEVELOPMENT SOFTWARE
WHAT IS HMI?
WHY DO WE USE HMI?
COMMUNICATION PROTOCOLS?
PROPRIETARY
MODBUS VIA ETHERNET
DNP-3
WHAT ISSUES DRIVE THE DESIGN OF A PARTICULAR HMI?

15. INTOUCH HMI SCREENS
BASIC 1-LINE VIEW OF POWER SYSTEM VIA HMI SCREEN

16. INTOUCH HMI SCREENS (CONTINUED)
SAMPLE LOGIN SCREEN

17. INTOUCH HMI SCREENS (CONTINUED)
ENTER USER CREDENTIALS
ACCESS LEVELS / PERMISSION MENU

18. INTOUCH HMI SCREENS (CONTINUED)
LOGGED IN!! NOW LET’S GO TO WORK!

19. INTOUCH HMI SCREENS (CONTINUED)
1-LINE DIAGRAM – FROM HERE, THE USER CAN NAVIGATE/CONTROL THE SYSTEM AS NEEDED

20. INTOUCH HMI SCREENS (CONTINUED)
HIGH SIDE CIRCUIT BREAKER AND PROTECTIVE RELAY

21. INTOUCH HMI SCREENS (CONTINUED)
MAIN POWER TRANSFORMER DISPLAY – HIGH AND LOW SIDE CURRENTS

22. INTOUCH HMI SCREENS (CONTINUED)
TRANSFORMER DIFFERENTIAL RELAY (SEL-387)

23. INTOUCH HMI SCREENS (CONTINUED)
4.16kV MAIN BREAKER AND ASSOCIATED PROTECTIVE RELAY (SEL-351S)

24. INTOUCH HMI SCREENS (CONTINUED)
STATIC LOAD FEEDER AND PROTECTIVE RELAY (SEL-351S)

25. INTOUCH HMI SCREENS (CONTINUED)
MOTOR FEEDER WITH SEL-710 MOTOR PROTECTION RELAY

26. CONCLUSIONS WHAT DID I LEARN? BASIC HMI STRUCTURE
TOOLS FOR BUILDING HMI (WONDERWARE – IN TOUCH)
COMMON PROTOCOLS USED WHEN IMPLEMENTING HMI
COMMON PROBLEMS WHEN IMPLEMENTING HMI / SCADA SYSTEM

27. THE END