Transitional Cluster Study

Attachment B

Group 2012 Cluster Study Transient Stability Plots

1

2012 Heavy Summer Pre-Cluster Base Case No Outage Transient Bus Voltage Plots

2012 Heavy Summer Pre-Cluster Base Case No Outage Transient Frequency Plots

2

2012 Heavy Summer Pre-Cluster Base Case Coachella – Devers 230 kV line outage Transient Bus Voltage Plots

2012 Heavy Summer Pre-Cluster Base Case Coachella – Devers 230 kV line outage Transient Frequency Plots

3

2012 Heavy Summer Pre-Cluster Base Case Ramon – Mirage 230 kV line outage Transient Bus Voltage Plots

2012 Heavy Summer Pre-Cluster Base Case Ramon – Mirage 230 kV line outage Transient Frequency Plots

4

2012 Heavy Summer Pre-Cluster Base Case Imperial Valley – El Centro 230 kV line outage Transient Bus Voltage Plots

2012 Heavy Summer Pre-Cluster Base Case Imperial Valley – El Centro 230 kV line outage Transient Frequency Plots

5

2012 Heavy Summer Pre-Cluster Base Case Imperial Valley – Miguel 500 kV line outage Transient Bus Voltage Plots

2012 Heavy Summer Pre-Cluster Base Case Imperial Valley– Miguel 500 kV line outage Transient Frequency Plots

6

2012 Heavy Summer Pre-Cluster Base Case N. Gila - Imperial Valley 500 kV line outage Transient Bus Voltage Plots

2012 Heavy Summer Pre-Cluster Base Case N. Gila - Imperial Valley 500 kV line outage Transient Frequency Plots

7

2012 Heavy Summer Pre-Cluster Base Case Palo Verde - Devers 500 kV line outage Transient Bus Voltage Plots

2012 Heavy Summer Pre-Cluster Base Case Palo Verde - Devers 500 kV line outage Transient Frequency Plots

8

2012 Heavy Summer Pre-Cluster Base Case ELSTM2 and REPU2 generator outages Transient Bus Voltage Plots

2012 Heavy Summer Pre-Cluster Base Case ELSTM2 and REPU2 generator outages Transient Frequency Plots

9

2012 Heavy Summer Pre-Cluster Base Case Path 42 outage w/ RAS Transient Bus Voltage Plots

2012 Heavy Summer Pre-Cluster Base Case Path 42 outage w/RAS Transient Frequency Plots

10

2012 Heavy Summer Pre-Cluster Base Case El Centro – Highline #1 & 2 230 kV line outages Transient Bus Voltage Plots

2012 Heavy Summer Pre-Cluster Base Case El Centro – Highline #1 & 2 230 kV line outages Transient Frequency Plots

11

2012 Heavy Summer Pre-Cluster Base Case Imperial Valley - El Centro #1 & 2 230 kV line outages Transient Bus Voltage Plots

2012 Heavy Summer Pre-Cluster Base Case Imperial Valley - El Centro #1 & 2 230 kV line outages Transient Frequency Plots

12

2012 Heavy Summer Pre-Cluster Base Case Coachela – Devrs & Coachela-Ramon 230kV line outages Transient Bus Voltage Plots

2012 Heavy Summer Pre-Cluster Base Case Coachela – Devrs & Coachela-Ramon 230kV line outages Transient Frequency Plots

13

2012 Heavy Summer Post-Cluster Base Case No Outage Transient Bus Voltage Plots

2012 Heavy Summer Post-Cluster Base Case No Outage Transient Frequency Plots

14

2012 Heavy Summer Post-Cluster Base Case Coachella – Devers 230 kV line outage Transient Bus Voltage Plots

2012 Heavy Summer Post-Cluster Base Case Coachella – Devers 230 kV line outage Transient Frequency Plots

15

2012 Heavy Summer Post-Cluster Base Case Ramon – Mirage 230 kV line outage Transient Bus Voltage Plots

2012 Heavy Summer Post-Cluster Base Case Ramon – Mirage 230 kV line outage Transient Frequency Plots

16

2012 Heavy Summer Post-Cluster Base Case Imperial Valley – El Centro 230 kV line outage Transient Bus Voltage Plots

2012 Heavy Summer Post-Cluster Base Case Imperial Valley – El Centro 230 kV line outage Transient Frequency Plots

17

2012 Heavy Summer Post-Cluster Base Case Imperial Valley – Miguel 500 kV line outage Transient Bus Voltage Plots

2012 Heavy Summer Post-Cluster Base Case Imperial Valley– Miguel 500 kV line outage Transient Frequency Plots

18

2012 Heavy Summer Post-Cluster Base Case N. Gila - Imperial Valley 500 kV line outage Transient Bus Voltage Plots

2012 Heavy Summer Post-Cluster Base Case N. Gila - Imperial Valley 500 kV line outage Transient Frequency Plots

19

2012 Heavy Summer Post-Cluster Base Case Palo Verde - Devers 500 kV line outage Transient Bus Voltage Plots

2012 Heavy Summer Post-Cluster Base Case Palo Verde - Devers 500 kV line outage Transient Frequency Plots

20

2012 Heavy Summer Post-Cluster Base Case ELSTM2 and REPU2 generator outages Transient Bus Voltage Plots

2012 Heavy Summer Post-Cluster Base Case ELSTM2 and REPU2 generator outages Transient Frequency Plots

21

2012 Heavy Summer Post-Cluster Base Case Path 42 outage w/ RAS Transient Bus Voltage Plots

2012 Heavy Summer Post-Cluster Base Case Path 42 outage w/RAS Transient Frequency Plots

22

2012 Heavy Summer Post-Cluster Base Case El Centro – Highline #1 & 2 230 kV line outages Transient Bus Voltage Plots

2012 Heavy Summer Post-Cluster Base Case El Centro – Highline #1 & 2 230 kV line outages Transient Frequency Plots

23

2012 Heavy Summer Post-Cluster Base Case Imperial Valley - El Centro #1 & 2 230 kV line outages Transient Bus Voltage Plots

2012 Heavy Summer Post-Cluster Base Case Imperial Valley - El Centro #1 & 2 230 kV line outages Transient Frequency Plots

24

2012 Heavy Summer Post-Cluster Base Case Coachela – Devrs & Coachela-Ramon 230kV line outages Transient Bus Voltage Plots

2012 Heavy Summer Post-Cluster Base Case Coachela – Devrs & Coachela-Ramon 230kV line outages Transient Frequency Plots

25

2012 Heavy Summer Post-Cluster w/ Mitigation Case No Outage Transient Bus Voltage Plots

2012 Heavy Summer Post-Cluster w/ Mitigation Case No Outage Transient Frequency Plots

26

2012 Heavy Summer Post-Cluster w/ Mitigation Case Coachella – Devers 230 kV line outage Transient Bus Voltage Plots

2012 Heavy Summer Post-Cluster w/ Mitigation Case Coachella – Devers 230 kV line outage Transient Frequency Plots

27

2012 Heavy Summer Post-Cluster w/ Mitigation Case Ramon – Mirage 230 kV line outage Transient Bus Voltage Plots

2012 Heavy Summer Post-Cluster w/ Mitigation Case Ramon – Mirage 230 kV line outage Transient Frequency Plots

28

2012 Heavy Summer Post-Cluster w/ Mitigation Case Imperial Valley – El Centro 230 kV line outage Transient Bus Voltage Plots

2012 Heavy Summer Post-Cluster w/ Mitigation Case Imperial Valley – El Centro 230 kV line outage Transient Frequency Plots

29

2012 Heavy Summer Post-Cluster w/ Mitigation Case Imperial Valley – Miguel 500 kV line outage Transient Bus Voltage Plots

2012 Heavy Summer Post-Cluster w/ Mitigation Case Imperial Valley– Miguel 500 kV line outage Transient Frequency Plots

30

2012 Heavy Summer Post-Cluster w/ Mitigation Case N. Gila - Imperial Valley 500 kV line outage Transient Bus Voltage Plots

2012 Heavy Summer Post-Cluster w/ Mitigation Case N. Gila - Imperial Valley 500 kV line outage Transient Frequency Plots

31

2012 Heavy Summer Post-Cluster w/ Mitigation Case Palo Verde - Devers 500 kV line outage Transient Bus Voltage Plots

2012 Heavy Summer Post-Cluster w/ Mitigation Case Palo Verde - Devers 500 kV line outage Transient Frequency Plots

32

2012 Heavy Summer Post-Cluster w/ Mitigation Case ELSTM2 and REPU2 generator outages Transient Bus Voltage Plots

2012 Heavy Summer Post-Cluster w/ Mitigation Case ELSTM2 and REPU2 generator outages Transient Frequency Plots

33

2012 Heavy Summer Post-Cluster w/ Mitigation Case Path 42 outage w/ RAS Transient Bus Voltage Plots

2012 Heavy Summer Post-Cluster w/ Mitigation Case Path 42 outage w/RAS Transient Frequency Plots

34

2012 Heavy Summer Post-Cluster w/ Mitigation Case Imperial Valley – El Centro #1 &2 230 kV lines outage Transient Bus Voltage Plots

2012 Heavy Summer Post-Cluster w/ Mitigation Case Imperial Valley – El Centro #1 &2 230 kV lines outage Transient Frequency Plots

35

2012 Heavy Summer Post-Cluster w/ Mitigation Case Highline –El Centro #1 &2 230 kV lines outage Transient Bus Voltage Plots

2012 Heavy Summer Post-Cluster w/ Mitigation Case Highline –El Centro #1 &2 230 kV lines outage Transient Frequency Plots

36

2012 Heavy Summer Post-Cluster w/Mitigation Case Coachela – Devrs & Coachela-Ramon 230kV line outages Transient Bus Voltage Plots

2012 Heavy Summer Post-Cluster w/Mitigation Case Coachela – Devrs & Coachela-Ramon 230kV line outages Transient Frequency Plots

37

2012 Light Winter Transient Stability Plots

38

2012 Light Winter Pre-Cluster Base Case No Outage Transient Bus Voltage Plots

2012 Light Winter Pre-Cluster Base Case No Outage Transient Frequency Plots

39

2012 Light Winter Pre-Cluster Base Case Coachella – Devers 230 kV line outage Transient Bus Voltage Plots

2012 Light Winter Pre-Cluster Base Case Coachella – Devers 230 kV line outage Transient Frequency Plots

40

2012 Light Winter Pre-Cluster Base Case Ramon – Mirage 230 kV line outage Transient Bus Voltage Plots

2012 Light Winter Pre-Cluster Base Case Ramon – Mirage 230 kV line outage Transient Frequency Plots

41

2012 Light Winter Pre-Cluster Base Case Imperial Valley – El Centro 230 kV line outage Transient Bus Voltage Plots

2012 Light Winter Pre-Cluster Base Case Imperial Valley – El Centro 230 kV line outage Transient Frequency Plots

42

2012 Light Winter Pre-Cluster Base Case Imperial Valley – Miguel 500 kV line outage Transient Bus Voltage Plots

2012 Light Winter Pre-Cluster Base Case Imperial Valley– Miguel 500 kV line outage Transient Frequency Plots

43

2012 Light Winter Pre-Cluster Base Case N. Gila - Imperial Valley 500 kV line outage Transient Bus Voltage Plots

2012 Light Winter Pre-Cluster Base Case N. Gila - Imperial Valley 500 kV line outage Transient Frequency Plots

44

2012 Light Winter Pre-Cluster Base Case Palo Verde - Devers 500 kV line outage Transient Bus Voltage Plots

2012 Light Winter Pre-Cluster Base Case Palo Verde - Devers 500 kV line outage Transient Frequency Plots

45

2012 Light Winter Pre-Cluster Base Case ELSTM2 and REPU2 generator outages Transient Bus Voltage Plots

2012 Light Winter Pre-Cluster Base Case ELSTM2 and REPU2 generator outages Transient Frequency Plots

46

2012 Light Winter Pre-Cluster Base Case Path 42 outage w/ RAS Transient Bus Voltage Plots

2012 Light Winter Pre-Cluster Base Case Path 42 outage w/RAS Transient Frequency Plots

47

2012 Light Winter Pre-Cluster Base Case Imperial Valley – El Centro #1 &2 230 kV lines outage Transient Bus Voltage Plots

2012 Light Winter Pre-Cluster Base Case Imperial Valley – El Centro #1 &2 230 kV lines outage Transient Frequency Plots

48

2012 Light Winter Pre-Cluster Base Case Highline – El Centro #1 &2 230 kV lines outage Transient Bus Voltage Plots

2012 Light Winter Pre-Cluster Base Case Highline – El Centro #1 &2 230 kV lines outage Transient Frequency Plots

49

2012 Light Winter Pre-Cluster Base Case Coachela – Devrs & Coachela-Ramon 230kV line outages Transient Bus Voltage Plots

2012 Light Winter Pre-Cluster Base Case Coachela – Devrs & Coachela-Ramon 230kV line outages Transient Frequency Plots

50

2012 Light Winter Post-Cluster Base Case No Outage Transient Bus Voltage Plots

2012 Light Winter Post-Cluster Base Case No Outage Transient Frequency Plots

51

2012 Light Winter Post-Cluster Base Case Coachella – Devers 230 kV line outage Transient Bus Voltage Plots

2012 Light Winter Post-Cluster Base Case Coachella – Devers 230 kV line outage Transient Frequency Plots

52

2012 Light Winter Post-Cluster Base Case Ramon – Mirage 230 kV line outage Transient Bus Voltage Plots

2012 Light Winter Post-Cluster Base Case Ramon – Mirage 230 kV line outage Transient Frequency Plots

53

2012 Light Winter Post-Cluster Base Case Imperial Valley – El Centro 230 kV line outage Transient Bus Voltage Plots

2012 Light Winter Post-Cluster w/ Mitigation Case Imperial Valley – El Centro 230 kV line outage Transient Frequency Plots

54

2012 Light Winter Post-Cluster Base Case Imperial Valley – Miguel 500 kV line outage Transient Bus Voltage Plots

2012 Light Winter Post-Cluster Base Case Imperial Valley– Miguel 500 kV line outage Transient Frequency Plots

55

2012 Light Winter Post-Cluster Base Case N. Gila - Imperial Valley 500 kV line outage Transient Bus Voltage Plots

2012 Light Winter Post-Cluster Base Case N. Gila - Imperial Valley 500 kV line outage Transient Frequency Plots

56

2012 Light Winter Post-Cluster Base Case Palo Verde - Devers 500 kV line outage Transient Bus Voltage Plots

2012 Light Winter Post-Cluster Base Case Palo Verde - Devers 500 kV line outage Transient Frequency Plots

57

2012 Light Winter Post-Cluster Base Case ELSTM2 and REPU2 generator outages Transient Bus Voltage Plots

2012 Light Winter Post-Cluster Base Case ELSTM2 and REPU2 generator outages Transient Frequency Plots

58

2012 Light Winter Post-Cluster Base Case Path 42 outage w/ RAS Transient Bus Voltage Plots

2012 Light Winter Post-Cluster Base Case Path 42 outage w/RAS Transient Frequency Plots

59

2012 Light Winter Post-Cluster Base Case Imperial Valley – El Centro #1 &2 230 kV lines outage Transient Bus Voltage Plots

2012 Light Winter Post-Cluster Base Case Imperial Valley – El Centro #1 &2 230 kV lines outage Transient Frequency Plots

60

2012 Light Winter Post-Cluster Base Case Highline – El Centro #1 &2 230 kV lines outage Transient Bus Voltage Plots

2012 Light Winter Post-Cluster Base Case Highline – El Centro #1 &2 230 kV lines outage Transient Frequency Plots

61

2012 Light Winter Post-Cluster Base Case Coachela – Devrs & Coachela-Ramon 230kV line outages Transient Bus Voltage Plots

2012 Light Winter Post-Cluster Base Case Coachela – Devrs & Coachela-Ramon 230kV line outages Transient Frequency Plots

62

2012 Light Winter Post-Cluster w/ Mitigation Case No Outage Transient Bus Voltage Plots

2012 Light Winter Post-Cluster w/ Mitigation Case No Outage Transient Frequency Plots

63

2012 Light Winter Post-Cluster w/ Mitigation Case Coachella – Devers 230 kV line outage Transient Bus Voltage Plots

2012 Light Winter Post-Cluster w/ Mitigation Case Coachella – Devers 230 kV line outage Transient Frequency Plots

64

2012 Light Winter Post-Cluster w/ Mitigation Case Ramon – Mirage 230 kV line outage Transient Bus Voltage Plots

2012 Light Winter Post-Cluster w/ Mitigation Case Ramon – Mirage 230 kV line outage Transient Frequency Plots

65

2012 Light Winter Post-Cluster w/ Mitigation Case Imperial Valley – El Centro 230 kV line outage Transient Bus Voltage Plots

2012 Light Winter Post-Cluster w/ Mitigation Case Imperial Valley – El Centro 230 kV line outage Transient Frequency Plots

66

2012 Light Winter Post-Cluster w/ Mitigation Case Imperial Valley – Miguel 500 kV line outage Transient Bus Voltage Plots

2012 Light Winter Post-Cluster w/ Mitigation Case Imperial Valley– Miguel 500 kV line outage Transient Frequency Plots

67

2012 Light Winter Post-Cluster w/ Mitigation Case N. Gila - Imperial Valley 500 kV line outage Transient Bus Voltage Plots

2012 Light Winter Post-Cluster w/ Mitigation Case N. Gila - Imperial Valley 500 kV line outage Transient Frequency Plots

68

2012 Light Winter Post-Cluster w/ Mitigation Case Palo Verde - Devers 500 kV line outage Transient Bus Voltage Plots

2012 Light Winter Post-Cluster w/ Mitigation Case Palo Verde - Devers 500 kV line outage Transient Frequency Plots

69

2012 Light Winter Post-Cluster w/ Mitigation Case ELSTM2 and REPU2 generator outages Transient Bus Voltage Plots

2012 Light Winter Post-Cluster w/ Mitigation Case ELSTM2 and REPU2 generator outages Transient Frequency Plots

70

2012 Light Winter Post-Cluster w/ Mitigation Case Path 42 outage w/ RAS Transient Bus Voltage Plots

2012 Light Winter Post-Cluster w/ Mitigation Case Path 42 outage w/RAS Transient Frequency Plots

71

2012 Light Winter Post-Cluster w/ Mitigation Case Imperial Valley – El Centro #1 &2 230 kV lines outage Transient Bus Voltage Plots

2012 Light Winter Post-Cluster w/ Mitigation Case Imperial Valley – El Centro #1 &2 230 kV lines outage Transient Frequency Plots

72

2012 Light Winter Post-Cluster w/ Mitigation Case Highline – El Centro #1 &2 230 kV lines outage Transient Bus Voltage Plots

2012 Light Winter Post-Cluster w/ Mitigation Case Highline – El Centro #1 &2 230 kV lines outage Transient Frequency Plots

73

2012 Light Winter Post-Cluster w/Mitigation Case Coachela – Devrs & Coachela-Ramon 230kV line outages Transient Bus Voltage Plots

2012 Light Winter Post-Cluster w/Mitigation Case Coachela – Devrs & Coachela-Ramon 230kV line outages Transient Frequency Plots