SDG&E Transmission Synchrophasor Project Update

Transcription

1 SDG&E Transmission Synchrophasor Project Update Joint Synchronized Information Subcommittee (JSIS) Meeting Tariq Rahman, May 22-25, San Diego Gas & Electric Company. All copyright and trademark rights reserved.

2 Challenges Facing SDG&E Copyright SDG&E, 2017

3 Renewables Introduce Faster Dynamics Major changes in the power system are occurring. For example: introduction of Wind and Solar renewable resources constitute about 35%+ of the capacity, with a 50%+ level expected in the near future, and retirements of traditional generation resources create new daily load shapes and new load behavior in response to power system events not seen in the past. Also the complexity of interactions between the various device types is increasing, e.g. between FACTS devices and traditional control devices; between Volt/VAR control devices of the same type and between different types. These changes, while driven by the overall positive economic and environmental impacts, make it a lot more challenging to monitor and effectively control the resulting power grid.

4 SDG&E Synchrophasor Project The Transmission PMU project application provides the following features and capabilities of value to SDGE: Wide Area Situational Awareness and Dynamic System Monitoring Near real-time view of the system that is invisible to EMS SCADA Real-time reserve capacity and load monitoring Generator Monitoring, Modeling & Control System Tuning Voltage Stability Prediction & Oscillation Detection PMU Assisted Black Start Islanding Detection and Controlled Islanding Wide Area Monitoring Protection And Control (WAMPAC TM ) Back-up EMS SCADA

5 Complete 230kV & 500kV System Coverage with PMUs PATH 44 MW MV PATH 44/HDW-NG MW MV PEN SDG&E Import MW MV CW ML PATH 45 MW MV BUE ECO OCO SDG&E/CFE Import MW MV DW BB Copyright SEL, SDG&E, 2017

6 Copyright SDG&E, 2017 Operations Dashboard Compare voltage, power, etc. signals from PMUs across the system together at once

7 PI Operations Dashboard Tie-line loading Path Flow Multilayer Geospatial Map System Frequency with Event Detection Voltage Profile

8 Substation View Copyright SDG&E, 2017

9 Copyright SDG&E, kV System View

10 Tie-line Trip View

11 Phase angle measurement across inter-tie breakers

12 WASA-I Vision 1 Bring Data Together Synchrophasors Event Records Traveling Wave 2 Automate Analysis Disturbance and oscillation detection Correlate over time Copyright SEL & SDG&E, 2017

13 FACTS Oscillation Detection Display showing most recent detected disturbances, the list is updated in real-time. SEL Confidential Event :18:20 PM x/xx/20xx 9 Locations Detected Disturbance Top 4 Locations: Impact 15 PMU 1 PMU 2 PMU 3 PMU 4 Jump to Event Time Save to Snapshots Event Date Event Date Event Date Event Date Event Date Event Date Event Date Event Date Event Date Event Date Event Date Event Date Event Date Event Date Event Date Event Date Event Date Event Date Event Date Event Date Event Date Event Date Copyright SEL, SDG&E, 2016

14 Solar Plant Oscillation Detection PMU 1 PMU 2 PMU 3 PMU 4 List of Detected Disturbances Copyright SEL, SDG&E, 2016

15 Oscillation Leading to Line Trip PMU 1 PMU 2 PMU 3 PMU 4 Copyright SEL, SDG&E, 2016

16 WECC Generation Trip PMU 1 PMU 2 PMU 3 PMU 4 Copyright SEL, SDG&E, 2016

17 Correlate Relay Event Data Frequency Line Trip Voltage Magnitude Relay Event Report TL #1 TL #2 TL #3 TL #4 TL #5 TL #6 TL #7 Copyright SEL & SDG&E, 2017

18 Integrated Event Analysis TL #1 SEL-311L Relay Oscillography Copyright SEL & SDG&E, 2017

19 Project Status 1. Delivered WASA Phase 1 In Operation at Grid Control as non-operational data Provide near real-time overview of the entire bulk electrical system Assist Operators to quickly close IV-NG Inter-tie breaker Assist Operators in detecting events, line trips, and disturbances Assist Operators in reclosing lines and switching operations Quickly analyze a fault as soon as it happens Disturbance and oscillation detection 2. Projects in progress DOE FOA 970 Peak Reliability Synchrophasor Program (PRSP) V&R Voltage Stability and Peak-ROSE Energy Linear State Estimator (LSE) Automatic determination of corrective remedial actions DOE FOA 1492 Advanced Synchrophasor Protocol (ASP) Development and Demonstration Project Development of Gateway Exchange Protocol (GEP) Oscillation Detection Washington State University Voltage Stability Washington State University install 20 new PMUs in the Black Start path Install PMUs in 138 & 69kV

20 WASA Phase II ( ) Advanced Visualization with EMS Integration and 3 rd Party Application Plugin WASA II functionality will consist of improved WASA I functions in combination with 3 rd party applications, all selected to provide Operations the tools that better leverage capabilities of the synchrophasor technology. Architecturally, the WASA II system is envisioned as a long-lived platform with Advanced Visualization at the core, and the capability to plug in 3 rd party applications The Advanced Visualization system is envisioned to provide all the needed WASA visualization functions for Operators; it will also manage all real time, historical data and application results needed for trending and tabular displays; it will manage metadata and models, including electric network model, for its own needs and those of the specified 3 rd party applications It will manage interchange of information with external systems, e.g. with EMS and others, and with WASA internal 3 rd party applications; and it will provide means for presenting and managing alarms generated by WASA applications.

21 SDG&E Synchronous Condenser1 Model Validation and Parameter Tuning Hassan Ghoudjehbaklou, Principal Engineer Tariq Rahman, PMU project Manager San Diego Gas and Electric

22 Model Validation Using PMU Data (Courtesy of BPA, based on the methodology proposed by Dmitry Kosterev and Steve Yang)

23 SynCon configuration

24 Description of 4/6/2017 WECC Event At 2300, System frequency deviated from 60.0 Hz to due to loss of generation in the Pacific NW At 2335, Frequency recovered to 60.0 Hz. Cause of frequency deviation earlier reported, due to BPA RAS operation tripping 2200MW s of HYDRO

25 PMU View of 4/6/2017 WECC Event

26 Model Validation of SynCon real power (H = 2.12 sec) - simulation (blue) overshoots measurement (red)

27 Parameter Tuning of SynCon real power (H = 2.62 sec) - simulation (blue) matches measurement (red)

28 Model Validation of SynCon reactive power (H = 2.62 sec) - simulation (blue) not matching measurement (red) Under Investigation suspecting measurements inconsistency or transformer tertiary load impact

29 4/6/2017 WECC Event

30 Conclusions Modeling accuracy of a Synchronous Condenser is validated. The favorable impact of inertia (rotational energy) during a frequency event is measured and simulated. A successful tuning of the inertia constant is demonstrated. Thus an excellent match for the MW response is achieved. More work on matching the reactive response of the synchronous condenser is remaining. (An unmodeled tertiary load is suspected.) Also the following general comments: o It is important to have PMU measurements at the terminal of the dynamic units (conventional generators, wind turbine, solar PV, synchronous condensers, SVC, HVDC Converters, etc.) o It is important to know the right settings for the controllers (e.g., voltage, reactive, or power factor control.) o It is important to have tools to identify model parameters based on the PMU measurements during actual or planned disturbances. o It is also important to have proper tools for tuning the parameters of the models.

31 Thank you!