p-1 rs meeting-2014-01-22 houston tx-fri-1 - nerc.com subcommittee rs 2013/rs... · 2/5/2014 1...

2/5/2014

1

Frequency ResponseSummary of Proposed IFRO Changes & Multi-Unit Events

Bob Cummings, Neil Burbure, and Matthew VargheseRS MeetingJanuary 23, 2014

RELIABILITY | ACCOUNTABILITY2

• Data Source Errors True‐up sources between Interconnections for consistency

Reliability of data sources ‐ redundancy

Data Quality filtering

• FNet Improvements Analysis of frequency response statistics

Modify FR used to calculate MW loss estimates

Automate data extraction for candidate events

o T‐60s to T+300s

• Candidate Event Data Capture Adjust event trigger levels for SA to pursue Actual MW loss values

o Need to have actual MW loss for all candidate events for ALR1‐12

Automated FNet data extraction

Additional information for candidate event evaluation by FWG

Potential Frequency Event Analysis Improvements

Presentation 1

2/5/2014

2


• Definition of T‐0 and T+ Value A proximity

Algorithm development

Triggers

• Additional Screening of Candidate Events Slope filters

Point C > Value B

Point C’ before T+20s but after T+12s

• Other Tracking/analysis of multiple unit trips

Tracking of total plant trips

o Event Analysis root cause implications

Identification of good Model Validation events

Potential Frequency Event Analysis Improvements


Multi-Unit Events –Plant Bowen Units 1, 3, & 4

1,706 MW Loss

2/5/2014

3


Multi-Unit Events –LaSalle Units 1 & 2 – Total Plant Trip Event

2,344 MW Loss


Multi-Unit Events – Coal Creek 1 & 2

1,115 MW Loss

2/5/2014

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2/5/2014

1

Consortium forElectric ReliabilityTechnologySolutions

NERC Applications

Status

NERC Applications Status for

Resources Subcommittee

Frank Carrera & Song Xue

Houston, TX

January 22, 2014

Page 1

Agenda

NERC Application Status Summary

Frequency Device Check

Long Term Intelligent Alarm Issue

FNET Data Issue

Presentation 2

2/5/2014

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Page 2

NERC Applications Status Summary

Application NERC Applications Status and Authorized Users(Many companies have several authorized users)

ResourceAdequacy

(ACE Frequency)

Inadvertent

Area InterchangeError (AIE)

IntelligentAlarms

FrequencyMonitoring andAnalysis (FMA)

Release 8.0 – Released November 2013 – 170 authorized users.Release 8.1 will be released with updated maps in February 2014NSPI ???

Release 4.0 – Released November 2013 – 286 authorized users- Release 4.1 will be released with updated maps in February 2014- NSPI???

Release 1.0 – Current production version – 122 authorized users



Automated ReliabilityReports (ARR)

Release 1.0 – Current production version – 61 authorized usersMonthly reports through December 2013 and Seasonal reports through Fall 2013 have been posted in ARR website.

Page 3

CERTS/NERC Application Data Base Update

All applications have been updated per the NERC CPS2 Bounds Report published on December 3, 2013

The maps in the Inadvertent and Resource Adequacyapplications have been updated and will be released in February 2014

EPG is committed to maintaining the accuracy of the Balancing Authority information within the applications in accordance with the published NERC CPS2 Bounds Report twice a year

Future Jurisdictional Changes: EPG plans for the next update of NERC maps to be in Fall 2014

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Page 4


RTDMS report used as a means to independently check frequency devices satisfy requirement 17 of the NERC BAL‐005‐0.2b standard. The report is not available given the NASPI RTDMS hosting issues, and resolution date is unknown

In addition to the monthly event list, a supplemental report for each interconnection has been requested by the RS

An example of the average frequency for each 10‐minute period of November 24, 2013 for each interconnection was provided

EPG can append the frequency device check to the monthly frequency event report, if desired – need RS decision

Page 5


Interconnection 10‐Minute Frequency Performance (based on 1‐second average data)

Eastern uses Sullivan PMUWestern, ERCOT & HQ Uses FNET

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Hour Ending Hourly Average 1-10 min 11-20 min 21-30 min 31-40 min 41-50 min 51-60 min

1 60.0040 59.9995 59.9963 60.0054 59.9985 60.0079 60.0165

2 59.9968 59.9986 59.9880 59.9997 59.9948 60.0057 59.9942

3 59.9972 59.9959 59.9875 59.9996 59.9979 59.9954 60.0068

4 60.0003 59.9962 60.0008 60.0002 60.0068 59.9980 59.9996

5 59.9993 60.0020 60.0092 59.9989 59.9940 59.9952 59.9962

6 59.9960 59.9993 59.9916 59.9946 59.9947 60.0022 59.9934

7 59.9995 60.0046 59.9955 59.9948 59.9964 59.9988 60.0073

8 59.9956 59.9964 59.9914 59.9974 59.9911 60.0004 59.9968

9 59.9973 59.9940 59.9937 59.9963 59.9973 60.0018 60.0009

10 60.0022 59.9902 59.9925 60.0068 60.0113 60.0040 60.0083

11 60.0092 59.9921 60.0058 60.0142 60.0145 60.0147 60.0138

12 60.0057 59.9957 60.0018 60.0049 60.0090 60.0053 60.0178

13 60.0051 60.0052 60.0086 60.0044 60.0158 60.0002 59.9963

14 60.0066 60.0107 60.0047 60.0040 60.0055 60.0061 60.0086

15 60.0065 60.0087 60.0043 60.0047 60.0100 60.0034 60.0081

16 60.0061 60.0153 60.0034 60.0012 59.9974 60.0078 60.0112

17 60.0003 60.0043 59.9949 60.0022 60.0011 59.9917 60.0079

18 60.0028 59.9984 59.9953 60.0152 60.0022 60.0017 60.0043

19 59.9999 60.0141 60.0067 59.9951 59.9875 59.9995 59.9965

20 59.9968 59.9976 59.9979 59.9965 59.9978 59.9958 59.9952

21 59.9989 59.9862 59.9882 60.0008 60.0050 60.0041 60.0093

22 59.9993 59.9991 59.9955 60.0020 59.9999 60.0016 59.9979

23 60.0043 59.9799 60.0012 60.0037 60.0118 60.0099 60.0193

24 60.0125 60.0087 60.0090 60.0145 60.0066 60.0178 60.0182

Eastern Interconnection Frequency Performance (based on 1-second average data) Sunday, November 24, 2013 (Eastern Standard Time)

Daily Average: 60.0018 Minutes > 60.08: 0.0000

Standard Deviation: 0.0139 Minutes > 60.05: 0.0500

Maximum Frequency: 60.0520 Minutes < 59.95: 0.0000

Minimum Frequency: 59.9550 Minutes < 59.92: 0.0000

Page 7


1 60.0001 60.0074 59.9963 60.0008 59.9982 59.999 59.999

2 59.9996 60.0012 60.0039 59.9936 59.9983 60.0029 59.9978

3 59.9988 60.003 59.9937 59.9975 59.9942 59.9986 60.006

4 59.9984 60.0027 59.9912 59.9943 59.9967 59.9977 60.0076

5 60.0015 59.9964 60.0064 59.9931 60.0023 59.9998 60.0108

6 59.9989 59.9937 60.0118 59.9983 59.9968 59.9946 59.9981

7 59.9966 60.0014 59.9974 59.9958 59.9934 59.9967 59.995

8 59.9995 60.005 60.003 60.0033 59.9959 60.001 59.9888

9 60.0019 59.9947 60.0167 59.9924 59.9973 60.0013 60.0089

10 60.0026 60.0034 60.0019 59.9995 59.9983 60.0043 60.008

11 59.9995 59.9974 59.9976 59.9943 60.001 60.0013 60.0056

12 60.0055 60.0092 59.9996 60.0069 59.9965 60.0131 60.0079

13 60.0068 60.0105 60.0058 60.0088 60.0071 60.0064 60.0024

14 60.0035 59.9965 60.0096 59.9954 60.0058 60.0118 60.002

15 59.9947 59.9949 60.0114 59.999 59.9867 59.9882 59.9882

16 59.9932 59.9868 59.9998 59.9929 59.9928 59.9976 59.989

17 59.992 59.9876 60.004 59.9882 59.9901 59.9849 59.9971

18 60.0046 60.0016 60.0028 60.0055 60.0112 60.0086 59.998

19 60.0008 60.0021 59.9966 59.9959 60.0008 60.0033 60.0058

20 60.0001 60.0015 60.0014 59.9964 60.0027 60.0002 59.9985

21 59.9992 59.9975 59.9967 60.003 59.9958 59.9997 60.0021

22 60.0019 59.999 60.0026 60.0053 60.0054 60.0035 59.9957

23 60.0013 60.0051 60.001 59.9987 60.005 59.998 60.0001

24 59.9993 59.9963 59.9954 59.9968 59.999 60.0075 60.0005

HQ Interconnection Frequency Performance (based on 1-second average data) Sunday, November 24, 2013 (Eastern Standard Time)





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ERCOT Interconnection Frequency Performance (based on 1-second average data) Sunday, November 24, 2013 (Central Standard Time)






1 60.0030 60.0070 59.9975 60.0039 59.9993 60.0007 60.0098

2 59.9981 59.9892 59.9940 60.0060 59.9891 60.0179 59.9924

3 60.0006 59.9995 60.0015 59.9987 59.9961 59.9974 60.0106

4 60.0005 60.0019 60.0025 59.9934 60.0069 59.9939 60.0042

5 59.9972 59.9992 59.9896 59.9997 60.0083 59.9885 59.9980

6 60.0018 60.0036 59.9900 60.0009 60.0102 59.9917 60.0146

7 59.9965 59.9879 59.9940 60.0065 60.0030 59.9879 59.9996

8 59.9998 60.0076 59.9819 60.0115 59.9913 59.9993 60.0069

9 59.9958 59.9921 59.9961 60.0035 59.9826 60.0152 59.9851

10 60.0008 60.0032 60.0012 60.0023 59.9995 59.9905 60.0084

11 59.9996 59.9916 60.0050 59.9945 60.0091 59.9849 60.0128

12 59.9988 59.9961 59.9992 59.9940 60.0037 60.0030 59.9969

13 59.9991 60.0035 59.9965 60.0000 59.9974 59.9985 59.9987

14 59.9989 60.0057 59.9901 59.9989 60.0012 60.0055 59.9918

15 60.0001 60.0012 59.9976 60.0099 59.9889 60.0058 59.9974

16 59.9999 59.9988 59.9949 60.0028 60.0053 59.9863 60.0114

17 59.9991 59.9942 60.0011 59.9986 59.9999 59.9965 60.0042

18 59.9977 59.9999 59.9966 59.9871 60.0033 60.0017 59.9975

19 59.9983 59.9998 59.9949 60.0010 60.0000 59.9906 60.0036

20 60.0001 59.9959 60.0098 60.0000 59.9947 59.9994 60.0009

21 59.9989 60.0023 59.9958 59.9922 60.0063 60.0011 59.9956

22 60.0025 60.0075 60.0021 60.0044 60.0015 60.0056 59.9937

23 60.0009 60.0071 60.0052 59.9943 60.0162 59.9880 59.9946

24 60.0022 60.0016 59.9922 60.0156 60.0018 60.0000 60.0019


1 60.0107 59.9806 60.0084 60.0444 60.0326 60.0071 59.9912

2 60.0065 60.0066 60.0101 60.0053 60.0102 60.0081 59.9986

3 60.0058 59.9976 60.0052 60.0096 60.0125 60.0119 59.9978

4 60.0067 60.0119 60.0068 59.9867 60.0075 60.0101 60.0172

5 59.9953 60.0090 60.0025 60.0020 59.9846 59.9769 59.9967

6 59.9803 59.9860 59.9887 59.9768 59.9747 59.9638 59.9917

7 59.9951 59.9857 59.9979 60.0031 59.9845 59.9883 60.0112

8 60.0022 60.0177 60.0051 59.9973 59.9880 59.9889 60.0162

9 59.9950 59.9960 59.9828 60.0041 59.9916 59.9905 60.0048

10 60.0089 59.9996 59.9984 60.0067 60.0253 60.0198 60.0037

11 60.0178 60.0044 60.0202 60.0197 60.0357 60.0327 59.9942

12 60.0121 59.9937 60.0034 60.0206 60.0179 60.0210 60.0158

13 60.0177 60.0269 60.0253 60.0191 60.0227 60.0199 59.9923

14 59.9926 59.9859 59.9932 60.0065 60.0041 59.9917 59.9743

15 59.9888 59.9850 59.9853 59.9859 59.9875 59.9930 59.9960

16 59.9662 59.9656 59.9667 59.9686 59.9597 59.9533 59.9833

17 59.9654 59.9894 59.9599 59.9446 59.9637 59.9510 59.9837

18 59.9778 59.9733 59.9774 59.9701 59.9736 59.9806 59.9917

19 60.0048 60.0099 60.0039 59.9959 60.0006 60.0007 60.0176

20 60.0034 60.0046 59.9857 59.9978 60.0065 60.0070 60.0186

21 60.0174 59.9898 60.0012 60.0179 60.0297 60.0388 60.0274

22 60.0313 60.0171 60.0192 60.0241 60.0469 60.0545 60.0261

23 60.0268 60.0122 60.0307 60.0371 60.0305 60.0379 60.0126

24 60.0161 60.0138 60.0133 59.9998 60.0234 60.0270 60.0194

Western Interconnection Frequency Performance (based on 1-second average data) Sunday, November 24, 2013 (Pacific Standard Time)





2/5/2014

6

Long Term Intelligent Alarm Issue

EPG will correct the sign reversal bug in subject line

Incorrect long term intelligent alarm was generated due to lack of TEC for Eastern interconnection

EPG needs proper TEC in the NERC database in order to correct EI long‐term alarm

1. The EI Time keeper is required to send TEC to NERC via ICCPVACAR South RC (Duke is agent) is the current EI Time Monitor but only until 2/1/14

2. NERC RS requested EPG to investigate the feasibility of extracting TEC from MISO and PJM post scheduled frequency website – EPG’s findings is a significant amount of programming effort is required (change of scope)

FNET Data Issue

EPG relies on FNET data to provide monthly event report for Western, ERCOT and Hydro Quebec

EPG has TVA PMU data as primary frequency source and FNET data as secondary data source for Eastern Interconnection

FNET failed to provide data for the following dates:Dec. 5, 9, 10, 12, 13, 15, 21, 28 and 29 in UTC time for ERCOT

FNET has 7 unites in ERCOT Interconnection, however none reported data for the above December dates

EPG requests support from the RS to have Western, ERCOT and HQ interconnections provide frequency data to EPG for event detection – especially since FNET is not 100% reliable.

Page 11

2/5/2014

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Page 12

Q & A

Page 13

EPG Personnel Contact Information

NERC Application Support

– Pankaj Mishra – [email protected]

(626) 685‐2015 Ext. 136

– Hernaldo Watler –[email protected]

(626) 685‐2015 Ext. 142

Grid Performance Analysis & Reporting

– Song Xue – [email protected]

(626) 685‐2015 Ext. 135

2/5/2014

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Page 14

Consortium forElectric ReliabilityTechnologySolutions

NERC Applications

Status

Frequency Control & Time Error Correction Performance Report forResources Subcommittee

Frank Carrera & Song Xue

Houston, TX

January 23, 2014

Page 15

Frequency Control & Time Error Correction

Performance Report

Presentation 5

2/5/2014

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Page 16

Monthly CPS1

Page 17

Monthly CPS2

2/5/2014

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Page 18

Frequency Deviation Profile

Page 19

Frequency Profile

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Page 20

Frequency Profile January through December

Page 21

Frequency Error – 4th Quarter

2/5/2014

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Page 22

Frequency Error – 3rd Quarter

Page 23

Frequency Error – 2nd Quarter

2/5/2014

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Page 24

Frequency Error – 1st Quarter

Page 25

Daily Frequency Performance -2010

2/5/2014

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Page 26


Page 27


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Page 28


Page 29

1-Minute Frequency Profile

2/5/2014

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Page 30

10-Minute Frequency Profile

Page 31

Daily RMS1

2/5/2014

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Page 32

Daily RMS1 Boxplot

Page 33

Daily Average Frequency Error Boxplot

2/5/2014

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Page 34

Daily RMS1 Control Plot

Page 35

Daily Average Frequency Error Control Plot

2/5/2014

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Page 36

yWECC TIME ERROR STATISTICS

2013 SummaryAnnual Totals (YTD)Total Number of Time Error Corrections 179

“Fast” Time Error Corrections 98

“Slow” Time Error Corrections 81

Net Total Duration of TE Correction (Hrs) 1026.70 Hours

“Fast” Time Error Corrections 582.8 Hours

“Slow” Time Error Corrections 443.9 Hours

Average Duration of Time Error Corrections(Hrs)

5.74 Hours

“Fast” Time Error Corrections 5.95

“Slow” Time Error Corrections 5.48

Actual “Time Error” Correction Achieved 1090.58 Seconds 18.2 minutes

CONFIDENTIAL - Do Not Route or Copy Without NERC-CERTS Authorization

Consortium forElectricReliabilityTechnologySolutions

BAL-003Field Test

Performance, Trends and Statistics

BAL-003 Field Test Performance, Trends, and Statistics at Interconnection Level

For: Resources Subcommittee Frequency Working Group (RS-FWG)

By: Carlos Martinez, CERTS-ASRJanuary 22, 2014 – Houston TX

Presentation 3


Presentation Outline

• Interconnections Candidate and RS-FWG Form-1 Events Counts, Statistics and Trends

• Interconnections Frequency Response Means, Medians And Time Regressions Statistics

• Interconnections 2010-2013 Performance Trends Using Events Frequency Traces of Medians

• Observations and Recommendations

BAL-003 Field Test:

2


BAL-003 Field Test - Interconnections Candidate and Form-1 EventsCounts, Statistics and Trends


BAL-003 Field Test – Interconnections RS-FWG Form-1 Candidate and Form-1 2010-2013 Events

4


BAL-003 Field Test – Interconnections 2009-2013RS-FWG Form-1 Events Monthly and Yearly Averages

5


BAL-003 Field Test – Interconnections 2010-2013RS-FWG Form-1 Events Generation and Load

6


BAL-003 Field Test - Interconnections Frequency Response Equation, Means,

Medians and Time Regressions Statistics


Frequency Response Equation and Components

𝐹𝐹𝐹𝐹𝐹𝐹𝐹𝐹𝐹𝐹𝐹𝐹𝐹𝐹𝐹𝐹𝐹𝐹 𝑅𝑅𝐹𝐹𝑅𝑅𝑅𝑅𝑅𝑅𝐹𝐹𝑅𝑅𝐹𝐹 =𝑀𝑀𝑀𝑀 𝐿𝐿𝑅𝑅𝑅𝑅𝑅𝑅

10 ∗ 𝐴𝐴 − 𝐵𝐵 𝐷𝐷𝐹𝐹𝐷𝐷𝐷𝐷𝐷𝐷 𝐹𝐹𝐹𝐹𝐹𝐹𝐹𝐹𝐹𝐹𝐹𝐹𝐹𝐹𝐹𝐹𝐹𝐹

𝑀𝑀𝑀𝑀 𝐿𝐿𝑅𝑅𝑅𝑅𝑅𝑅 : Taken from BAL-003 Form1

𝑉𝑉𝐷𝐷𝐷𝐷𝐹𝐹𝐹𝐹𝐵𝐵: The average value of frequency for the 𝑇𝑇0 +20 Seconds to 𝑇𝑇0 + 52 Seconds (BAL-003 Definition)

𝑉𝑉𝐷𝐷𝐷𝐷𝐹𝐹𝐹𝐹𝐴𝐴 : The average value of frequency for the Start Event -2 seconds to Start event – 16 seconds (BAL-003 Definition)

8


Intercon.

NERC 2013 Frequency Response (FR) Report – Means and Time Regressions

per Second using 2009-2012 ALR Events,and (A-B) DeltaFreq.

CERTS Frequency Response – Medians and Time Regressions per Year Regressions per

Year using 2011-2013 RS-FWG Form-1 Generation Events and (A-B) DeltaFreq

Num

bero

fAL

R Ev

ents

Mea

nFr

eque

ncy

Resp

onse

[M

W/0

.1Hz

]Sl

ope

[MW

/0.1

Hz]

/Yea

r

Sdr.

Dev.

[M

W/0

.1Hz

]

Num

bero

f G

en.E

vent

s

Med

ian

Freq

uenc

yRe

spon

se[M

W/0

.1Hz

]Sl

ope

[MW

/0.1

Hz]

/Yea

r

Sdr.

Dev.

[MW

/0.1

Hz]

Eastern 186 2360 55 0.009 599 76 2036 415 0.87 789

Western 91 1521 -176 0.045 430 75 1096 98 0.54 463

ERCOT 246 570 -6 0.002 172 158 548 89 0.89 183

HydroQ. 48 555 42 0.015 192 61 546 5 0.001 579

BAL-003 Field Test - Interconnections 2009-2013 Frequency Response Statistics and Time Regressions

Note1: NERC uses all ALR events from 2009-2012 and does a regression against time (seconds). CERTS firstestimates medians for each year (BAL003) and does a regression (year) using the 3 2011 to 2013 medians.Note2: A time regression model Coefficient of Determination (𝑅𝑅2) affirms the capacity of time for explaining Frequency Response. An 𝑅𝑅2 > 0.6 indicates and acceptable correlation

9


NERC 2013 Frequency Report 2009-2012 InterconsFrequency Response vs Time (Seconds) Regressions

EASTERN

HYDRO QUEBECERCOT

WESTERN

10


BAL-003 Field Test - Interconnections 2011-2013 Frequency Response Statistics and Trends – Form 1

11


BAL-003 Field Test - Interconnections 2011-2013 MW Loss Statistics and Trends for Form 1 Events

12


BAL-003 Field Test - Interconnections 2011-2013 (A-B) Delta Statistics and Trends for Form 1 Events

13


BAL-003 Field Test – Interconnections 2011-2013 (A-Nadir) Delta Statistics and Trends for Form 1

14


BAL-003 Field Test - Interconnections 2010-2013 Performance Trends Using Events Frequency Traces of Medians


BAL-003 Field Test - Interconnections 2013 Frequency Trace of Medians from RS-FWG Form-1

16


Comparison of 2013 Frequency Traces of Medians from Form-1Events vs. NERC 2013 IFRO Dynamics Simulations – East/West

BAL-003 Field Test – Eastern Frequency Trace of Medians for RS-FWG 2013 Form-1 Events

17

CONFIDENTIAL - Do Not Route or Copy Without NERC-CERTS AuthorizationCONFIDENTIAL - Do Not Route or Copy Without NERC-CERTS Authorization

BAL-003 Field Test - 2010-2013 Performance Trends Using RS-FWG Candidate Events

18


Comparison of 2013 Frequency Traces of Medians from Form-1Events vs. NERC 2013 IFRO Dynamics Simulations – East/West

19


NON AVAILABLE

Comparison of 2013 Frequency Traces from Form-1Events vs. NERC 2013 Dynamics Simulations – Ercot/HQ

20


Observations and Recommendations

1. Identify input phasor data quality and availability issues, and agree on data filters require by event selection software, until IEEE defines a phasor data quality standard for applications

2. For the criteria selecting candidate events include the thresholds around 60 Hz recommended in BAL-003

3. The number of events in Form-1 should be at least the minimum 20 per year, 2 per month recommended in BAL-003

4. Review, discuss and agree on the regression methodology to use for comparison and reporting with other statistics

5. Review and discuss adequacy of frequency Value-B definition for Eastern interconnection

21

2/5/2014

1

EI Beta Value AnalysisDr. Frank Liu

University of TennesseeJan. 2014

2

Based on the confirmed events of Eastern Interconnection (2012 and 2013), beta value vs. starting frequency (A point)/ beta value vs. loss MW/ beta value vs. 24 Hr are plotted in the following slides.

In the last slide, a plot of beta value vs. month/year from the NERC frequency response annual analysis report is also given.

Presentation 4

2/5/2014

2

3

Beta vs. starting freq (EI-2012-2013)

0

10

20

30

40

50

60

70

80

59.960 59.970 59.980 59.990 60.000 60.010 60.020 60.030 60.040

Beta (MW/mHz)

Freq (Hz)

seems the higher A point, the lower beta value?

4

Beta vs. loss MW (EI-2012-2013)

0

10

20

30

40

50

60

70

80

0 500 1,000 1,500 2,000 2,500

Beta (MW/mHz)

Loss MW

Seems the bigger loss, the higher beta value?

2/5/2014

3

5

Beta vs. 24 Hr (EI-2012-2013)

Beta (MW/mHz)

Time (24 Hr)

0

10

20

30

40

50

60

70

80

0:00 2:24 4:48 7:12 9:36 12:00 14:24 16:48 19:12 21:36 0:00

Seems no obvious relationship between beta value and daily load profile…

Beta vs. month/year (EI-2009-2012)

5-6

From this plot, seems the beta value doesn’t have an obvious seasonal change.

So far, it’s difficult to draw any conclusions, any suggestions/comments?

2014

2013

2012

2011

2010

2009

2008

2007

2006

2005

2004

2003

2002

2001

2000

1999

1998

1997

1996

0.030

0.025

0.020

0.015

0.010

Year

RM

S1

(H

z)

0.018

Eastern Interconnection RMS1 (thru 1/19/2014)

2014

2013

2012

2011

2010

2009

2008

2007

2006

2005

2004

2003

2002

2001

2000

1999

1998

1997

1996

0.02

0.01

0.00

-0.01

-0.02

Year

Hz

0

Boxplot of Daily EI Ave Frequency Error (thru 1/19/14)

Presentation 6

51464136312621161161

0.0150

0.0145

0.0140

0.0135

0.0130

Sample

Sa

mp

le M

ea

n

__X=0.014181

UCL=0.015143

LCL=0.013219

51464136312621161161

0.004

0.003

0.002

0.001

0.000

Sample

Sa

mp

le R

an

ge

_R=0.001990

UCL=0.003989

LCL=0

1

11

1

11

Tests performed with unequal sample sizes

Xbar-R Chart of EI Weekly RMS1 (1/1/13 thru 1/19/14)

0.00450.00300.00150.0000-0.0015-0.0030-0.0045

60

50

40

30

20

10

0

Daily Avg

# o

f D

ay

s

Histogram of Daily EI Avg Frequency Error (1/1/13 thru 1/19/14)

2/5/2014

1

NERC Resources SubcommitteeEastern Interconnection Time Error Report 4Q13

2013 EI Time Error Summary

Presentation 7

2/5/2014

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1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013

Num

ber o

f cor

rect

ions

Monthly Time Error Summary - Number of Corrections1995 - 2013

Fast Slow

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1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013

Tota

l Hou

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Monthly Time Error Summary - Total Hours1995 - 2013

Fast Slow

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2/5/2014

1

ERCOT Frequency Control and Time Correction Report

Resources Subcommittee Meeting

Houston, Texas

January 23, 2014

ERCOT FREQUENCY CONTROL REPORT

Frequency Profile, CPS1 & 2 and Daily Frequency RMS1.

Presentation 8

2/5/2014

2

ERCOT CPS1 By Day -

0

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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31

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RC

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S 1

0

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70000

ER

CO

T P

eak

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erg

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CPS 1 Avg CPS 1 Peak Energy

December-2013

166.42ERCOT Monthly CPS1 =

ERCOT CPS2 By Day -

80%

82%

84%

86%

88%

90%

92%

94%

96%

98%

100%

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31

Day

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S 2

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CPS 2 Avg CPS 2 Peak Energy

December-2013

99.17ERCOT Monthly CPS2 =

2/5/2014

3

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CP

S1

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e

ERCOT CPS1

Monthly Average 12 Month Rolling Average

12 month Rolling Average CPS1 = 166.31

ERCOT CPS2 Score*

70

75

80

85

90

95

100

Jul-05O

ct-05Jan-06A

pr-06Jul-06O

ct-06Jan-07A

pr-07Jul-07O

ct-07Jan-08A

pr-08Jul-08O

ct-08Jan-09A

pr-09Jul-09O

ct-09Jan-10A

pr-10Jul-10O

ct-10Jan-11A

pr-11Jul-11O

ct-11Jan-12A

pr-12Jul-12O

ct-12Jan-13A

pr-13Jul-13O

ct-13

Month

CP

S2

CPS2

*ERCOT as a single control area is exempt from CPS2. These scores are For Information Only

2/5/2014

4

Daily RMS1 of ERCOT Frequency

0.0100

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2000

7/1/2

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7/1/

2013


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/201

3

2/5/2014

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0.0100

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0

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Comparing October 2010 vs October 2013 profile of frequency in 5 mHz bins

Oct-10

Oct-13

60.015 <= HZ < 60.020

2/5/2014

6

0

0.02

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0.08

0.1

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Comparing November 2010vs November 2013 profile of frequency in 5 mHz bins

Nov-10

Nov-13

60.015 <= HZ < 60.020

Comparing December 2010 vs December 2013 profile of frequency in 5 mHz bins

0

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59.900

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Dec-10

Dec-13

60.010 <= HZ < 60.015

2/5/2014

7

ERCOT Frequency Profile Comparison

0

10000

20000

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60000

59.9

59.9

159

.92

59.9

359

.94

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559

.96

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759

.9859

.99 60

60.0

160

.02

60.0

360

.0460

.05

60.0

660

.07

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860

.09

60.1

On

e M

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2010 2013

January through December of each Year

ERCOT TIME ERROR AND TIME CORRECTIONS PERFORMANCE

Time Error, Number of Time Corrections and Total Hours in Time Correction.

2/5/2014

8

Time Error Corrections

• Two slow Time Error Corrections were executed in December.

• One of these TECs corrected 9 seconds. This avoided doing approximately two more TECs during the month.

• Other than the days with the TECs, only 3 days had positive time error. This is significantly down based on the previous 5 months performance. Largest negative Time Error accumulations occurred when Regulation Up was exhausted.

ERCOT Time Error & Time Change

-10

-8

-6

-4

-2

0

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8

10

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Lo

ss -

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ly T

ime

- G

ain

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Tim

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Time Change Time Error

January-2013 December-2013

2/5/2014

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Time Correction HistoryTotal Hours on Avg Hours Avg Corrections % Time on

Year Month Days Fast Slow Count Control Per Correction Per Day CorrectionTime Corrections

2012 Jan 31 0 12 12 36.33 3.03 0.39 4.9%Feb 29 0 12 12 34.00 2.83 0.41 4.9%Mar 31 0 15 15 42.50 2.83 0.48 5.7%Apr 30 0 11 11 30.75 2.80 0.37 4.3%May 31 0 11 11 30.50 2.77 0.35 4.1%Jun 30 0 8 8 24.00 3.00 0.27 3.3%Jul 31 0 7 7 20.00 2.86 0.23 2.7%Aug 31 0 7 7 18.00 2.57 0.23 2.4%Sep 30 0 9 9 24.00 2.67 0.30 3.3%Oct 31 0 10 10 28.50 2.85 0.32 3.8%Nov 30 0 1 1 2.50 2.50 0.03 0.3%Dec 31 0 10 10 30.00 3.00 0.32 4.0%

2013 Jan 31 0 3 3 9.50 3.17 0.10 1.3%Feb 28 0 6 6 18.00 3.00 0.21 2.7%Mar 31 0 5 5 17.50 3.50 0.16 2.4%Apr 30 0 1 1 5.50 5.50 0.03 0.8%May 31 0 2 2 8.50 4.25 0.06 1.1%Jun 30 0 3 3 12.50 4.17 0.10 1.7%Jul 31 0 0 0 0.00 0.00 0.00 0.0%Aug 31 0 0 0 0.00 0.00 0.00 0.0%Sep 30 0 0 0 0.00 0.00 0.00 0.0%Oct 31 0 0 0 0.00 0.00 0.00 0.0%Nov 30 0 0 0 0.00 0.00 0.00 0.0%Dec 31 0 2 2 11.50 5.75 0.06 1.5%

Monthly Hours on Time Correction

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2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013

To

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Hours on Control

2/5/2014

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Monthly Time Correction Summary

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2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013

Nu

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Slow Fast

ERCOT INTERCONNECTION FREQUENCY RESPONSE PERFORMANCE

Performance as measured by BAL‐003‐1 for current year.

2/5/2014

11

ERCOT Primary Frequency Response – BAL‐003‐12015 Bias and Frequency Response Measure

Date/Time (t-0) BA BA BA Relay Lmt Value "A" Information Value "B" Information SEFRD (FRM)Time Bias R1 for Bias for R1

BA Time Zone DelFreq Time DelFreq DelFreq MW/Load Lost Adjustment MW/Load Lost Adjustment (MW/0.1Hz) (MW/0.1Hz)

12/8/2013 13:07:28 CST -0.072 13:07:28 -0.072 -0.072 0.0 0.0 576.0 0.0 -804.3 -804.3

12/9/2013 8:43:12 CST -0.097 8:43:12 -0.097 -0.097 0.0 0.0 933.0 0.0 -960.2 -960.2

12/17/2013 11:45:44 CST -0.089 11:45:44 -0.089 -0.089 0.0 0.0 785.0 0.0 -881.1 -881.1

12/30/2013 9:44:24 CST -0.107 9:44:24 -0.107 -0.107 0.0 0.0 785.0 0.0 -731.1 -731.1

-844.17 1900 FRM - Average Estimated Frequency Response MW/0.1 Hz using SEFRD for R1

-840.66 1900 FRM - Regression Estimated Frequency Response MW/0.1Hz using SEFRD for R1

-842.71 1900 FRM - Median Estimated Frequency Response MW/0.1Hz for BA Compliance to R1, minimum Frequency Response

ERCOT INTERCONNECTION TOTAL ENERGY AND TOTAL ENERGY FROM WIND RESOURCES

Historical and current year to date totals.

2/5/2014

12

ERCOT Total Energy

0

5,000,000

10,000,000

15,000,000

20,000,000

25,000,000

30,000,000

35,000,000

40,000,000

45,000,000

Janu

ary

Febru

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ayJu

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Augus

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Septe

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Octob

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ERCOT Total Energy from Wind Generation

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500,000

1,000,000

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4,000,000

Janu

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2/5/2014

13

ERCOT % Energy from Wind Generation

0.00%

2.00%

4.00%

6.00%

8.00%

10.00%

12.00%

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Janu

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Febru

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Mar

chApr

ilM

ayJu

ne July

Augus

t

Septe

mbe

r

Octob

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Novem

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Decem

ber

2008 2009 2010 2011 2012 2013

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