frequency response wecc frequency response obligations robert w. cummings nerc director of...
TRANSCRIPT
Frequency Response WECC Frequency Response Obligations
Robert W. CummingsNERC Director of Reliability Initiatives and System AnalysisWECC Operating Committee MeetingMarch 26, 2015
RELIABILITY | ACCOUNTABILITY2
Step Response
RELIABILITY | ACCOUNTABILITY3
No-Step Response
RELIABILITY | ACCOUNTABILITY4
ERCOT Frequency Profile
0
5000
10000
15000
20000
25000
30000
35000
40000
59.9
59.9
159
.92
59.9
359
.94
59.9
559
.96
59.9
759
.9859
.99 60
60.0
160
.02
60.0
360
.0460
.05
60.0
660
.07
60.0
860
.09
60.1
On
e M
inu
te O
ccu
ran
ces
2010 2008
January through September of each Year
RELIABILITY | ACCOUNTABILITY5
±0.036 Hz Vs ±0.016 Hz Deadband
January thru September 2008 0.036 db vs. 2010 0.016 db
0
20000
40000
60000
80000
100000
120000
140000
59.9
59.9
159
.9259
.9359
.9459
.9559
.9659
.9759
.9859
.99 60
60.0
160
.0260
.0360
.0460
.0560
.0660
.0760
.0860
.09
60.1
MW
2008 MW Response of 0.036 db 2010 MW Response of 0.0166 db
545670.0
404989.0 2010 MW Response of 0.0166 db 25.78% Decrease in MW movement with lower deadband.
2008 MW Response of 0.036 db
MW Minute Movement of a 600 MW Unit @ 5% Droop
RELIABILITY | ACCOUNTABILITY6
• June 1 – Begin analysis of events Gather and analyze 1-second and sub-second data for all BAL-003 and
ALR 1-12 frequency events• July FWG/RS Meeting – present IFRO calculation results and • August 1 – Begin analysis of FERC For 714 NEL and generation
data• Mid-August – FWG & RS acceptance by conference call vote• September OC meeting – Present for approval• October 1 – File FRAA report with FERC• November 1 – Disseminate BA FROs
FR Annual Analysis and FRO Schedule
RELIABILITY | ACCOUNTABILITY7
BA Frequency Response Obligations
BAGen
MWHNELMWH
TotalMWH
% of WECC
BA FROsMW / 0.1 Hz
WECC 869,816,038 892,888,866 1,762,704,904 100 906
AZPS 30,135,771 31,266,681 61,402,452 3.483% 31.6
DEAA 1,326,593 0 1,326,593 0.075% 0.7
AVA 11,115,426 12,863,177 23,978,603 1.360% 12.3
BANC 13,183,002 17,356,897 30,539,899 1.733% 15.7
BPAT 113,968,892 54,494,712 168,463,604 9.557% 86.6
CISO 168,732,241 232,339,960 401,072,201 22.753% 206.1
TPWR 2,914,287 5,005,467 7,919,754 0.449% 4.1
EPE 3,798,187 8,354,189 12,152,376 0.689% 6.2
GRMA 6,170,411 0 6,170,411 0.350% 3.2
GRID 537,257 0 537,257 0.030% 0.3
RELIABILITY | ACCOUNTABILITY8
BA Frequency Response Obligations (cont.)
BAGen
MWHNELMWH
TotalMWH
% of WECC
BA FROsMW / 0.1 Hz
WECC 869,816,038 892,888,866 1,762,704,904 100 906
GRIF 2,092,743 0 2,092,743 0.119% 1.1
IPCO 15,550,027 17,614,878 33,164,905 1.881% 17.0
IID 1,695,499 4,222,270 5,917,769 0.336% 3.0
LDWP 23,182,322 29,677,274 52,859,596 2.999% 27.2
GWA 775,530 0 775,530 0.044% 0.4
WWA 135,570 0 135,570 0.008% 0.1
NEVP 30,094,050 36,062,507 66,156,557 3.753% 34.0
HGMA 1,648,157 0 1,648,157 0.094% 0.8
NWMT 11,904,555 10,795,013 22,699,568 1.288% 11.7
PACE 50,474,067 50,590,830 101,064,897 5.734% 51.9
RELIABILITY | ACCOUNTABILITY9
BA Frequency Response Obligations (cont.)
BAGen
MWHNELMWH
TotalMWH
% of WECC
BA FROsMW / 0.1 Hz
WECC 869,816,038 892,888,866 1,762,704,904 100 906
PACW 19,334,101 21,336,826 40,670,927 2.307% 20.9
PGE 10,286,801 20,788,125 31,074,926 1.763% 16.0
PSCO 40,637,992 45,796,153 86,434,145 4.903% 44.4
PNM 14,860,976 15,196,088 30,057,064 1.705% 15.4
CHPD 9,450,355 6,642,935 16,093,290 0.913% 8.3
GCPD 10,153,053 4,097,606 14,250,659 0.808% 7.3
DOPD 4,533,734 1,486,659 6,020,393 0.342% 3.1
PSEI 16,426,621 24,808,520 41,235,141 2.339% 21.2
SRP 35,872,974 28,911,429 64,784,403 3.675% 33.3
SCL 6,526,398 10,035,929 16,562,327 0.940% 8.5
RELIABILITY | ACCOUNTABILITY10
BA Frequency Response Obligations (cont.)
BAGen
MWHNELMWH
TotalMWH
% of WECC
BA FROsMW / 0.1 Hz
WECC 869,816,038 892,888,866 1,762,704,904 100 906
TEPC 13,058,015 15,567,738 28,625,753 1.624% 14.7
TIDC 1,851,696 2,605,599 4,457,295 0.253% 2.3
WALC 11,071,766 8,916,472 19,988,238 1.134% 10.3
WACM 37,123,652 24,602,83 61,726,483 3.502% 31.7
WAUW 396,145 789,877 1,186,022 0.067% 0.6
AESO 75,169,540 77,465,640 152,635,180 8.659% 78.5
BCHA 61,668,891 61,535,231 123,204,122 6.989% 63.3
CFE 11,958,741 11,661,353 23,620,094 1.340% 12.1
RELIABILITY | ACCOUNTABILITY11
Questions and Answers