GRID

Wide Area Visualization & SynchroPhasors

January 12, 2012 Manu Parashar

Anil Jampala

Principal Engineer

Holistic Generalized Grid Security Analysis

» Control Center -PDC

PMU MEASUREMENT-BASED

Analysis

(PhasorPoint)

Traditional MODEL-BASED

Analysis

(EMS)

SCADA & Alarms WAMS

State Estimator

State Measurement

Other EMS Applications

New Applications

Small Signal Stability

Oscillation Monitoring

Transient & Voltage Stability

Stability Monitoring & Control

Island

Management

Island Detection,

Resynchronization,

& Blackstart

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An Integrated “measurement-based” and “model-based” Approach.

PMU measurement-based methods Identify problems quickly.

PREDICT & MITIGATE

EDGE

MONITOR

OPERATING POINT

Model-based techniques provide the corrective actions (i.e. ‘what-if’ analysis) .

Wide Area Visualisation

RTUs

Our Integrated SynchroPhasor Solutions

PhasorPoint Workbench

Synchrophasor Framework

PMU & RTU Aggregation Applications

e-terrabrowser

e-terravision

PMUs

Energy Management System Dynamic Security

Assessment

- 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 Configuration

DSA Results

HOLISTIC GENERALIZED GRID SECURITY FRAMEWORK

Generalized Security Assessment (GSA)

Wide Area Security

Situation Awareness Wide Area Visualization (e-terravision)

Steady State

Security

Dynamic Security

UI Navigation UI

Navigation

Wide Area Monitoring Systems

(WAMS)

EMS Real Time Network Analysis

(SE/CA)

Small signal

Voltage

Transient

PMU-based Apps

(PhasorPoint) Network Model-based Apps

(EMS/Powertech Tools)

Condition

Monitoring

Non-operational

Data

Condition monitoring

Weather information

Power System Grid

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Network WAMS Alerts PMU/SCADA

Web Services CIM TBD TBD

Situational Awareness

Generalized Grid Security Framework - Integrated Context

State Estimator

CTG Analysis

Transient Stability

PMU/PDC RT

MEAS

WECC - September, 2010

Voltage Stability

System Contingencies – Impacted Assets, Location, Severity, Cause

Schematic Display – Still Preferred for Power Flow Monitoring

Small Signal Oscillation Visualization within e-terravision Modes shapes, amplitudes, damping, frequency, etc

Real-time alerts on poorly damped oscillations

Identify regions where inter-area oscillations are observable

Track oscillatory stability in real-time.

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Voltage Stability Assessment in e-terravision Voltage Contours, MW Margins, Weak Elements, Remedial Actions

»Identify weak elements (i.e. regions most prone »to voltage instability)

»MW Transfer Margins

»Control »Recommendations

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

PMU Visualization within e-terravision

Monitor ‘Angle Separation’ between source & sink

Phase angular spread across power system

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Weather Overlays

Radar Images and Lightning Strikes within close proximity of assets

Small Signal Oscillation Information within EMS Displays (e-terrabrowser)

Mode Shape Information

Oscillatory Modes

Mode Summary

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.

ALSTOM SynchroPhasor Solutions

PhasorPoint A SynchroPhasor Applications Framework

Copyright ALSTOM Grid

PhasorPoint SynchroPhasor Applications Framework

Scalable from Pilot to Large Scale

Small Pilot Systems Large Enterprise-Class Systems

Supports 5000+ phasors @ 60Hz

Enterprise-class reliability, security, inter-operability

HIGH AVAILABILITY (HA) Automated data recovery between redundant Servers

Proxy servers

Historical (lost) data recovery supported throughout Psymetrix PDC range (Substation, Regional, Central PDC)

C37.118 PMU/PDC

Open Interfaces

Data Recovery

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

Event Logic

Regional Voltage Stability

IF (ANY Sustained voltage slide OR N low voltage

detections)

AND ANY High Q flow

Scalar Calculations

User -created calculations derived values

Embedded flexible scripting language to extend functionality.

Overview Display

System level map

System Overview Map shows if there is any warning anywhere in the system Status Overview identifies

which phenomena have produced alarms

Event History Viewer shows a 15-minute time history of the

occurrence of each type of alert

PhasorPoint main tabs

The border of all measurement and group icons represents recent

alarm history (15 minutes)

Measurement group

Angle difference

Voltage and Phase Angle Monitoring

The colour of Voltage Phasor indicator show alarm status for High or Low voltage conditions

Voltage Phase and Magnitude Arrow

Blue indicator when transient occurs....

The blue vertical lines indicate the Times of transients on the chart

Tiered Hierarchy

Oscillatory Stability Management

1/F MODE FREQUENCY

MODE AMPLITUDE

A

MODE DECAY TIME

EXP(-t/ ? )

MODE PHASE

Mode Frequency

Mode Amplitude

Mode decay time

Mode Phase

Exp(-t/τ)

Measured P / f / δ

Simultaneous multi-oscillation detection and characterisation direct from measurements

For each oscillation detected, alarm on:

mode damping and/or

mode amplitude for

Operations

Planning & Analysis, Plant Performance

Unlimited oscillation frequency sub-bands

Individual alarm profiles for each sub-band

Post-event analysis

Dynamic model validation

Damping controller performance assessment

Dynamic performance baselining

Early warning of poor damping (two level alarms)

Fast Modal Analysis: Alarms

Trend Modal Analysis: Analysis

Wide area mode alarms Mode locus plot with alarm thresholds

Example: Modes Observed in Colombia

Ecuador Mode 0.49Hz

Governor Mode 0.06Hz

Inter-area mode at 0.49Hz (Colombia-Ecuador). Opposing

phase in South

Common-mode: whole system oscillates in coherent

phase

GRID

www.alstom.com

THANK YOU

Islanding, Resynchronisation & Blackstart

Frequency deviation indicated by

colour

Voltage angles rotate

freely if islanded

MODEL-BASED APPLICATIONS MEASUREMENT-BASED APPLICATIONS

PMU Information

Alerts/Alarms

Integrated “measurement-based” and “model-based” Solution

Downsampled PMU Data

(1 per second)

Oscillatory Stability

Management

Composite Event Alarms

Islanding Resync, & Blackstart

Line Parameter Estimation

Phasor Historian

SynchroPhasor Platform

Voltage Stability Assessment

Powertech Tools

SE Snapshot

Unified Wide-Area Visualization e-terravision

PMUs PMUs

PMUs Damping

control

DSA Results (few min)

High Speed PMU Data (30-60 per second)

VISUALIZATION

DATA MANAGEMENT & APPLICATIONS

DATA ACQUISITION & CONTROL

Control Center openPDC

Enhanced State

Estimator

Contingency Analysis

EMS e-terraplatform

DTS Alarm Management