Transforming Synchrophasor Information into Operator Guidance

Transcription

1 Transforming Synchrophasor Information into Operator Guidance Peter Fung Vahid Madani Pacific Gas & Electric Manu Parashar Anil Jampala GE Grid Software Solutions Imagination at work. March 31, 2016

2 (EMS) (PhasorPoint) (Situational Awareness) (PDC) (PDC) Highly Redundant

3 Aggregate Data Sites 3

4 PMU Locations 4

5 Angle Difference Monitoring at the Control Center 5

6 Relative Angles at the Control Center 6

7 Relative Angle Trending at the Control Center 7

8 Key Takeaways Training Environment to introduce Operators to PMU Apps. Need for Operator Guidance on Synchrophasor Applications. Unified Visualization across EMS and Synchrophasor Applications.

9 RPU RPU RPU PMU PMU PMU e-terraphasorpoint e-terraphasoranalytics Telecommunications Application Services Historian System Disturbance Mgmt Short Term Phasor Data Concentrator Oscillatory Stability Mgmt Islanding, Resynchronization & Blackstart Events/Alarms Triggered Storage e-terrascada e-terraplatform Dynamic Stability Analysis Voltage Stability Telecommunications e-terratransmission Network Applications Transient Stability Small Signal Analysis Real-Time PMU Analysis e-terraplatform

10 Synchrophasor-based Alarms within EMS Alarms (including WAMS status information) maintained and managed at a centralized location with the EMS Alarm Management System. Oscillatory Stability Mode Damping/Amplitude Thresholds WAMS alarms managed within EMS Alarm Management System Islanding Disturbances General Rate of Change Disturbance Characterization Composite Events User Defined WAMS Information in EMS displays Magnitude Threshold Violations Voltage Magnitude Calculated Data Angle Difference Frequency / ROCOF P&Q / Power Corridors e-terraphasorpoint e-terrabrowser

11 Integrated WAMS- EMS benefits Optimize Minute Second Angle-based Grid Management Real-Time Dynamic Limits On-line Stability (WAMS + Network + DSA) Enhanced Island Management System Disturbance Characterization Grid Stability Assessment (WAMS + Topology) OPTIMIZATION What-if PREDICTION Operator GUIDANCE Angle Difference Monitoring Oscillatory Stability Monitoring Islanding, Resynchronizatio n & Blackstart Subsecond Short Circuit Capacity Sub- Synchronous Resonance System Disturbance Monitoring MONITORING e-terraphasorpoint (WAMS Only)

12 Angle-Based Grid Management

13 Voltage Angle Separation During the Northern American blackout of 2003

14 Angle-based Grid Management Holistic Approach to Angle-based Grid Management Transforming WAMS angle-based MONITORING into OPERATOR GUIDANCE Correct (NETSENS) Predict (LODF) Angle Monitoring δ Dynamic/Static Limit (DSA Tools) KEY BENEFITS - Independent of State Estimation function (measurement & topology based approach). - Capable of making recommendations for corrective control actions. Observe Analyze Predict Correct

15 Real-Time Angle Difference Monitoring Present Angle Diff. (from PMUs) & Post-CTG Angle Diff. (from Topology) Monitoring Post-CTG Angle Differences 2 Controlling Post-CTG Angle Differences NOTE: Limits may be (1) Static (i.e. offline) OR (2) Dynamic (i.e. based on Real-Time Dynamic Security Assessment)

16 Real-Time Angle Difference Prediction All Post-CTG Angle Diff. (from Topology) Angle difference values during Post-CTG events.

17 Real-Time Angle Difference Control Effects of All Control Units on Post-CTG Angle Diff. for each CTG (from Topology) Generator sensitivities (in MW) to reduce angle difference values during Post-CTG events.

18 Operator in Training Dynamic Training Environment e-terrasimulator Dynamic Dispatcher Training Simulator (DTS) utilizing Transient Stability Engine (PowerTech TSAT). Shaping the next-generation DTS/OTS Dynamic Grid Simulator EMS Platform Load Flow Simulation Powertech TSAT Environment Control Room Training Environment Dispatch Control ETV Engine Downsampling alarms Simulated C Data Integrated Dispatcher Training System: Real-time simulator based on Powertech TSAT Simulated data is fed directly into PP as C streams Data is also downsampled and sent to the EMS & DSA Tools EMS integrated with PhasorPoint and DSA tools PhasorPoint Training Server Central PDC Application Services Data Services

19 Dynamic Training Environment e-terrasimulator

20 WAMS123 Demonstration System Miniature Academic Simulation Model of US Western Interconnection

21 Island Management, Restoration and Blackstart

22 Islanding in e-terravision

23 Island Management Detecting and Managing Multiple Islands Monitoring Islands Suggesting Island Restoration Restoring Islands Detecting Island Formation and its cause Suggesting CB controls for Island Restoration Detecting Island Restoration and its cause

24 Island Management Detecting and Managing Multiple Islands

25 System Restoration Assisting with the Restoration Process

26 System Restoration Assisting with the Restoration Process

27 Roadmap