1. Hongming Zhang EMS Applications Manager, PEAK RC
Post-Phase I WISP Applications Deployment and Validation Update
September 2014
JSIS Meeting
Hongming Zhang EMS Applications Manager, PEAK RC

2. Agenda WISP Applications deployment update
Use of PMU for system event validation
PMU data accuracy validation update
MM and ODM validation testing & issues
Next steps

3. WISP SW Deployment Update
ETV 3.1 has been installed to Engineers Consoles last week. The deployment includes
Weather data is available in Production-ETV soon
Deployment to Control room starts this week.
ETV 4.0 will be available for deployment on this Oct
Grid Stability Assessment (GSA) will install soon.

4. ETV Overview with Weather Layer Added

5. WSM Model Validation by PMU Data
Peak started to validate WSM model accuracy by using PSLF v19 and TSAT v13 to simulate system events against historical PMU data.
PSLF v19 (trial version) results match PMU closely as 95% of WSM units are mapped to the dyd file.
TSAT v13 results become reasonable when EMS names are populated and used for unit mapping.
Peak is enhancing WSM and built-in TSAT dynamic models, plus new TSAT software feature for model validation purpose.

6. April 24 Chief Jo Brake Insertion Test

7. May16 System Event Simulated by TSAT

8. May16 System Event Simulated by TSAT (Cont.)
Notes
Peak modified EMS code to export equipment EMS names to PTI30 format raw file as input to TSAT.
As a result, WSM units unmapped to the dyd decreased from 27% to 15% of total capacity
Most netted units are wind farms w/o freq. response.

9. WECC Footprint PMU Installation Sitemap
Notes
Till this Summer, Peak OpenPDC received 584 PMUs located at over 110 stations from 18 WISP members.
PMU signal types:
Voltage
Current
Frequency

10. PI based PMU Measurements Validation Tool
Highlights:
Compare Phasor values (30 samples/1s) to known trusted values
ICCP/SE (10s/60s scan rate)
Set allowable deviation
Angle = 2 Deg.
Mag = 1% of Nominal KV
Determine “% Good” (within allowable deviation)
Notes:
SCADA ICCP measurements are being refreshed in 10s.
PMU voltage measurements are sent in SCADA at 1s interval.
SE solves for every 60s. The SE values need be written in SCADA for storing in PI
At least one of PMU reference angle measurements need be enabled in SE
=𝑨𝒃𝒔( 𝑽𝒂𝒍𝒖𝒆 𝑰𝑪𝑪𝑷/𝑺𝑬 − 𝑽𝒂𝒍𝒖𝒆 𝑷𝑴𝑼 )>𝑫𝒆𝒗𝒊𝒂𝒕𝒊𝒐𝒏 𝑳𝒊𝒎𝒊𝒕

11. BA’s PMU Voltage Signals Validation by SCADA and SE (8/20/2014-9/07/2014)
Voltage Angle (SE Compared)
Voltage Magnitude (ICCP Compared)
Company
No. of Stations w PMU installed
Within +/- 2 Deg of SE (%)
Within +/- 1% Nom. KV of ICCP (%)
AESO 4
67.95
100.00
APS 3
96.02
50.88
BC Hydro 8
51.85
76.17
BPA 26
99.29
99.89
IPCO 7
70.91
90.89
LADWP 5
33.84
66.66
NEVP 1
95.48
100
NWMT 2
85.94
96.29
PAC
67.08 75
PNM
67.00
99.98
SCE
40.67
18.9
SDGE
94.45
SRP
88.24 50
WACM
68.63
SUM/AVG 62
73.38
80.33

12. Ex. BPA PMU Voltage Validation Statistics

13. Abnormal PMU Voltage Angle Samples

14. Mode Meter (MM) Testing & Issues
Recent MM validation tests found a few issues;
MM solutions (i.e. oscillation freq. and damping ratio) are NOT available frequently.
MM solutions differ between Prod and Test servers.
Input PMU signals are bad or not configured properly.
To facilitate MM testing, Peak re-configure to use BPA validated PMU angle signals for N-S back-up modes:
N-S Mode A back-up using Chief_Jo to Malin angles
N-S Mode B back-up using John_Day to Malin angles
MM solutions (i.e. oscillation freq. and damping ratio) are the mode estimates.

15. Mode Meter (MM) Testing & Issues (Cont.)
No solution due to invalid PMU signal
No solution due to high damping ratio
Invalid PMU angle signals
Collaboration is needed to clean up the data issues

16. PMU Angle Diff Input to N-S Mode B

18. ODM Baselining Implementation & Testing
Peak updated ODM configure file to implement the baselining parameters given by MontaTech in Test system. False alarms were noted due to lack of timer in ODM. Here is an example,
Timer can be implemented in GSA which will produce correct alarms in EMS and archived in PI

19. ODM Baselining Implementation & Testing (Cont.)

20. 2014 Probing Test PMU Data Request
Till date Peak provided 130+ PMU/24hr dataset in Comtrade for 2014 probing test dates: March 13/20, April 3/16/24/30 and May 14.
To collect the more PMU data for the rest dates:
Date
Test Phase
Brake
PDCI Probe
Wide-band probe*
May 29 2
YES
June 12
June 19 3
June 26
July 10
July 24
August 7
August 21
September 4
September 11

21. Next Steps Going Forward
Develop viable ETV use cases and roll out in prod
Validate PMU measurements as critical input to WISP and ROSE-VSA applications.
Establish a working process to address the PMU quality issues in collaboration with members.
Use GSA to archive WISP applications results for validation and study analysis.
Validate ODM & MM by TSAT/SSAT et al tools, and collaborate the effort with member entities.

22. Hongming Zhang, hzhang@peakrc.com