Wide Area Visualization & SynchroPhasors

Transcription

1 Wide Area Visualization & SynchroPhasors January 12, 2012 Manu Parashar Anil Jampala Principal Engineer GRID

2 Holistic Generalized Grid Security Analysis Traditional MODEL-BASED Analysis (EMS) PMU MEASUREMENT-BASED Analysis (PhasorPoint) SCADA & Alarms WAMS Other EMS Applications State Estimator State Measurement New Applications Small Signal Stability Oscillation Monitoring Transient & Voltage Stability Stability Monitoring & Control Island Management Island Detection, Resynchronization, & Blackstart» Control Center -PDC Copyright ALSTOM Grid

3 An Integrated measurement-based and model-based Approach. PMU measurement-based methods Identify problems quickly. EDGE MONITOR OPERATING POINT PREDICT & MITIGATE Model-based techniques provide the corrective actions (i.e. what-if analysis).

4 Our Integrated SynchroPhasor Solutions PMU & RTU Aggregation Applications Wide Area Visualisation PMUs Synchrophasor Framework PhasorPoint Workbench RTUs e-terravision Energy Management System Dynamic Security Assessment e-terrabrowser

5 Situational Awareness Situation Awareness Wide Area Visualization (e-terravision) Generalized Security Assessment (GSA) PMU/SCADA UI Navigation - Serve as a Data Information Hub to consolidate information -Correlation between measurement-based & model-based techniques. -Complex event processing using WAMS, SCADA & EMS info. -Central repository for visualization layer (i.e. e-terravision) and alarming WAMS Alerts Network DSA Results Configuration UI Navigation Web Services CIM TBD TBD Wide Area Security Steady State Security Dynamic Security Condition Monitoring HOLISTIC GENERALIZED GRID Small signal Wide Area EMS Real Time Non-operational Monitoring Systems Network Analysis Voltage SECURITY FRAMEWORK Data (WAMS) (SE/CA) Transient PMU-based Apps (PhasorPoint) Network Model-based Apps (EMS/Powertech Tools) Power System Grid Condition monitoring Weather information Copyright ALSTOM Grid

6 Generalized Grid Security Framework - Integrated Context State Estimator CTG Analysis Transient Stability PMU/PDC RT MEAS Voltage Stability WECC - September, 2010

7 System Contingencies Impacted Assets, Location, Severity, Cause

8 Schematic Display Still Preferred for Power Flow Monitoring

9 Small Signal Oscillation Visualization within e-terravision Modes shapes, amplitudes, damping, frequency, etc Real-time alerts on poorly damped oscillations Track oscillatory stability in real-time. Identify regions where inter-area oscillations are observable Copyright ALSTOM Grid

10 Voltage Stability Assessment in e-terravision Voltage Contours, MW Margins, Weak Elements, Remedial Actions»MW Transfer Margins»Control»Recommendations»Identify weak elements (i.e. regions most prone»to voltage instability)

11 Reactive Reserves Low/High System Voltages, where are the Vars?

12 PMU Visualization within e-terravision Phase angular spread across power system Monitor Angle Separation between source & sink Copyright ALSTOM Grid

13 Weather Overlays Radar Images and Lightning Strikes within close proximity of assets

14 Small Signal Oscillation Information within EMS Displays (e-terrabrowser) Integrated alarms in EMS tabular displays (e-terrabrowser) - New alarm categories in Alarm Summary (Disturbance, Low-Frequency Oscillations) - Tabular showing current/historical oscillatory mode information. Mode Summary Oscillatory Modes Mode Shape Information ALSTOM SynchroPhasor Solutions

15 PhasorPoint A SynchroPhasor Applications Framework Copyright ALSTOM Grid

16 PhasorPoint SynchroPhasor Applications Framework

17 Scalable from Pilot to Large Scale Small Pilot Systems Large Enterprise-Class Systems HIGH AVAILABILITY (HA) Automated data recovery between redundant Servers Proxy servers Historical (lost) data recovery supported throughout Psymetrix PDC range (Substation, Regional, Central PDC) Supports Hz Enterprise-class reliability, security, inter-operability

18 Open Interfaces C PMU/PDC Data Recovery

19 Flexible User-Defined Functionality Composite Alarms Synchronised data synchronized alarms Logical combinations wide-area alarms Flexible logic combine alarms to notify significant threats Applicable to voltage stability alarms Scalar Calculations User -created calculations derived values Embedded flexible scripting language to extend functionality. Event Logic Regional Voltage Stability IF (ANY Sustained voltage slide OR N low voltage detections) AND ANY High Q flow

20 Overview Display PhasorPoint main tabs Status Overview identifies which phenomena have produced alarms System Overview Map shows if there is any warning anywhere in the system The border of all measurement and group icons represents recent alarm history (15 minutes) Measurement group Angle difference System level map Event History Viewer shows a 15-minute time history of the occurrence of each type of alert

21 Voltage and Phase Angle Monitoring Voltage Phase and Magnitude Arrow Tiered Hierarchy Blue indicator when transient occurs... The colour of Voltage Phasor indicator show alarm status for High or Low voltage conditions The blue vertical lines indicate the Times of transients on the chart

22 Oscillatory Stability Management Simultaneous multi-oscillation detection and characterisation direct from measurements Operations Early warning of poor damping (two level alarms) Measured P / f / δ Unlimited oscillation frequency sub-bands Individual alarm profiles for each sub-band Mode Frequency 1/F MODE FREQUENCY Mode MODE decay DECAY TIME time Exp(-t/τ) EXP(-t/? ) For each oscillation detected, alarm on: mode damping and/or mode amplitude for Mode MODE AMPLITUDE Amplitude A Fast Modal Analysis: Trend Modal Analysis: Alarms Analysis Mode Phase MODE PHASE Wide area mode alarms Planning & Analysis, Plant Performance Post-event analysis Dynamic performance baselining Dynamic model validation Mode locus plot with alarm thresholds Damping controller performance assessment

23 Example: Modes Observed in Colombia Ecuador Mode 0.49Hz Inter-area mode at 0.49Hz (Colombia-Ecuador). Opposing Governor Mode 0.06Hz phase in South Common-mode: whole system oscillates in coherent phase

24 THANK YOU GRID

25 Islanding, Resynchronisation & Blackstart Voltage angles rotate freely if islanded Frequency deviation indicated by colour

26 Integrated measurement-based and model-based Solution Unified Wide-Area Visualization e-terravision VISUALIZATION DATA MANAGEMENT & APPLICATIONS Phasor Historian Oscillatory Stability Management Islanding Resync, & Blackstart Composite Event Alarms Line Parameter Estimation SynchroPhasor Platform High Speed PMU Data (30-60 per second) MEASUREMENT-BASED APPLICATIONS PMU Information Alerts/Alarms Enhanced State Estimator Alarm Management Downsampled PMU Data (1 per second) Contingency Analysis DTS EMS e-terraplatform SE Snapshot DSA Results (few min) Voltage Stability Assessment MODEL-BASED APPLICATIONS Powertech Tools Control Center openpdc DATA ACQUISITION & CONTROL PMUs PMUs Damping control PMUs