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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 1

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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 2

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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 3

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

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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, ..) 5

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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? 6

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

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

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

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

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

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

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

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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? 14

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

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INTOUCH HMI SCREENS (CONTINUED) SAMPLE LOGIN SCREEN 16

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

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INTOUCH HMI SCREENS (CONTINUED) LOGGED IN!! NOW LETS GO TO WORK! 18

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

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

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

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

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

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

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

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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 26

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THE END 27