IEEE Power & Energy Magazine - November/December 2017 - 80

0.20

65,000

0.10

60,000

0.00
0

1

2

3

4

5

6

7

8

Summer

100,000
MISO Total Load

9 10 11 12 13 14 15 16 17 18 19 20 21 22 23
Time of Day

0.60
0.40

80,000

0.20

70,000

0.00
0

1

2

3

4

5

6

7

8

9 10 11 12 13 14 15 16 17 18 19 20 21 22 23
Time of Day

-0.20

Fall

85,000
MISO Total Load

0.80

90,000

60,000

-0.10

0.50
0.40

80,000

0.30

75,000

0.20

70,000

0.10

65,000
60,000

0.00
0

1

2

3

4

5

6

7

8

9 10 11 12 13 14 15 16 17 18 19 20 21 22 23
Time of Day
Winter

85,000

0.50
0.40

80,000

0.30

75,000

0.20

70,000

0.10

65,000
60,000

-0.10

0.00
0

1

2

3

4

5

6

7

8

9 10 11 12 13 14 15 16 17 18 19 20 21 22 23
Time of Day

Average ELMP MEC Increase

-0.10

ELMP MEC-LMP MEC

0.30

70,000

ELMP MEC-LMP MEC

75,000

ELMP MEC-LMP MEC

MISO Total Load

0.40

55,000

MISO Total Load

0.50

80,000

ELMP MEC-LMP MEC

Spring

85,000

Average MISO Load

Source: MISO

figure 8. Seasonal comparisons of ELMP and LMP. MEC: marginal energy component.

tighten, an RTO may deploy demand-side resources more
frequently. To address the innate needs of efficient prices,
RTOs have initiated efforts such as MISO's pricing enhancement of emergency energy and demand response resources,
as illustrated in Figure 9. The enhancement, which went live
in July 2016, successfully prevented price depression several
times when MISO proceeded into emergency capacity shortage conditions.
80

ieee power & energy magazine

Incorporating New Technologies
Typically, the bulk power system operated by the ISO includes
the transmission grid at 100 kV and above. A fundamental
element of maintaining grid reliability is ensuring that the
current transmission grid conditions using real-time telemetry are visible to the ISO. Commonly, the ISO's network
model used in planning or operations includes the interface
between the transmission and distribution system by loads.
november/december 2017



Table of Contents for the Digital Edition of IEEE Power & Energy Magazine - November/December 2017

IEEE Power & Energy Magazine - November/December 2017 - Cover1
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IEEE Power & Energy Magazine - November/December 2017 - Cover3
IEEE Power & Energy Magazine - November/December 2017 - Cover4
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