1KHL501042 PSGuard WAMS Overview 2012-04

8/13/2019 1KHL501042 PSGuard WAMS Overview 2012-04

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ABB GroupApril 24, 2012 | Slide 2

Traditional grids

Years of development to provide automation of

well-established power system model

Electromechanical to numerical technology

Centralized and/or distributed architectures

Communication protocols : interoperability

Wide Area Monitoring SystemsFrom traditional to future grids

Future grids

Automati on systems for a new power system andbusiness model

Decentralized (renewable sources)

Demand-side management

FACTS (SVC, TCSC, STATCOM, PST), HVDC

Industry challenges

Need for more electricity

Emissions reduction

Integration and management of renewable energy

Optimal use of ageing assets

Ensure reliability of supply

Energy efficiency and security


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Increasing demand for power

Transmission networks get bigger by aggregation (islandinterconnected)

Distance between generation and load changes

Laws, regulations & politics often impede building powerplants where they are needed

Introduction of distributed energy resources e.g. wind

Load flow becomes volatile

Modern supervision and tools are needed

Increase the utilization of new technologies e.g. WAMS

to allow the networks to operate closer to its capacitywhile maintaining system security

Svenska Kraftnt 2001

Wide Area Monitoring SystemsGeneral challenges in transmission networks


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Wide Area Monitoring SystemsBasic idea


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Wide Area Monitoring SystemsPhasor measurements

Timestamp accuracy: 1 microsecondAbsolute angle accuracy error: < 0.1 degreeCT/VT: 0.2 0.5%

High accuracy provides the basis for anaccurate monitoring of power networks


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Local Measurements in Substations

CTs: high accuracy in small current values

requires connection to measurement cores


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Phasor Measurement UnitABB RES521

Based on Protective Relay technology

18 Analog Inputs(4 x 3ph CTs, 2 x 3ph VTs)

Selectable transfer ratesup to 1 phasor/cycle

GPS Synchronization

Accurate frequency measurement < 5 mHzerror

Local functions such as frequency, df/dt

Local trigger functions

Synchrophasor data format(IEEE 1344-1995, IEEE C37.118)


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Wide Area Monitoring SystemsPSGuard


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PSGuard positioning

PSGuard


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PSGuardWide Area Monitoring System

PSGuard System

Based on ABBs process control systemand Windows Server technology

Server/Client architecture

PMU data acquisition with OPC standardinterface

High resolution data storage and export

Graphical User Interface

WAMS applications

Connection to SCADA systems

PSGuard Communication Gateway

PMU data exchange in real-time betweenutilities


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PSGuardWide Area Monitoring System


PSGuard Applications

Phase Angle Monitoring

Voltage Stability Monitoring

Line Thermal Monitoring

Event Driven Data Archiving

Power Oscillation Monitoring

Power Damping Monitoring

SCADA/EMS integration

Communication gateway


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PSGuard Application Portfolio

Modular and scalable system structure


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OPC (OLE for Process Control) is a standard forProcess Control Systems

Provides PMU measurements to the PSGuardSystem via OPC Standard Interface

Supervises GPS synchronisation andcommunication channels

Supports IEEE1344-1995 and IEEE C37.118

Connectivity OPC Data Access Server for PMUs


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Basic Monitoring Process Visualization

Efficient Graphical User Interface engineering basedon a WAM library


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Configurable ring buffer data storage

PMU measurements

Application results

Every data point stored with

Timestamp Value

Quality

Export application

Export to CSV files

Data Storage and Export


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PSGuard Application Portfolio

Modular and scalable system structure


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Event Driven Data Archiving (EDDA)

Wide Area Disturbance Recorder based onlogical trigger conditions

Central triggering by observing network-widedata

Configurable archiving length and resolution

Archives are provided in CSV file format (MSExcel)

Continuous archiving provides daily archiving forlong-term data storage


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Phase Angle Monitoring (PAM)

Online calculation of voltage phase angledifference

Configurable alarming and warning thresholds


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Power Oscillations Monitoring (POM)

Real-time detection of power swings

Algorithm is fed with selected voltage and currentphasors

Detection of various swing (power oscillation)modes

Quickly identifies amplitude and frequency ofoscillations

In service since 2005

Field experience in Switzerland, Croatia, Mexico,Thailand, Finland, Norway, Austria

Bus Voltage

Mode Frequency, HzDamping, %

Mode Amplitude, V


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Power Oscillations Monitoring (POM)

ABB CRC research finalized on next generation ofPOM application

Accurate determination of damping levels underambient conditions

Mode shape determination

Use of multiple input signals

Simulationeous detection of multiple modes

Verified against simulated measurements and fieldmeasurements from the Fingrid WAMS

Verified against other algorithms in Universitycollaboration

Ready for piloting


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Power Damping Monitoring (PDM)

Real-time detection and visualization of multipleoscillation modes to truly understand the systembehaviour

Monitor damping and modal activity of most dangerousmodes in the power system from ambient data (beforelarge excitations happen)

Quickly identify the participants and sources of inter-

area oscillations using online visualization of modalshapes

Early warning of poorly damped lines allows operators to react before anevent triggers an inter-area oscillation


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PDM Modal Observability MapIdentify participants in inter-area oscillations


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Line Thermal Monitoring (LTM)

Use PMU measurements of voltage and currentto calculate average line temperature of themonitored line

On-line display of average temperature

Initial field results correlate increased powertransfer from 950 MW to 1150 MW leads to anaverage temperature increase from 46 degreesto 49 degrees over 30 min

Sample recordings from Swissgrid


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Provides power margin to the point ofmaximum loadability of transmission corridorsregarding voltage stability

High accuracy by using PMU data (dynamicdata)

Fast reaction (Usage of real-time data)

Voltage Stability Monitoring (VSM)

3 transmission

corridor

PMUPMU


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PSGuard Communication Gateway

PMU data exchange between utilitiesin real-time

PMU standard protocols IEEE1344-1995 and IEEE C37.118 are supported

The external WAM systems are able tocommunicate with the Gateway as witha physical PMU device

Filter functionality allows selective datatransmission (e.g. only voltages but nocurrent measurements are provided)


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The Interface Manager provides operatorswith processed data and alarms fromPSGuard in conventional SCADA/EMSsystems.

RTU standard protocols and specific

customer protocols are provided for theintegration in SCADA.

Interface Manager SCADA integration


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ABB PSGuard / WAM-System Installations


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Wide Area Monitoring SystemsPSGuard in Fingrid (Finland)

Since 2006

10 PMUs in Finland

Communication gateway to PMU in Norway

SCADA integration

Main application post-disturbance analysis of system performance

Collaboration project on power oscillation monitoring


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Wide Area Monitoring SystemsPSGuard in Swissgrid (Switzerland)

Since 2004 7 PMUs ABB RES521

Connection to PDCs & PMUs from major European utilities allowmonitoring of dynamics across Europe

Monitoring and early warning system for the loading of the north-south corridor of the Swiss transmission grid

SCADA integration

Monitoring of reconnection of UCTE zones (2004)


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Wide Area Monitoring SystemsPSGuard in HEP (Croatia)

Since 2003

14 PMUs ABB RES521

Enhance stability of transmissionsystem and optimize utilization oftransmission capacity

Features:

20 ms

Basic monitoring, storage andarchive

Line thermal monitoring

Voltage stability monitoring

Data exchange with other PDCs


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Wide Area Monitoring SystemsPSGuard in APG (Austria)

Since 2005

Monitoring of the vital 220 kV double lines between Vienna andTernitz substations with phase angle monitoring and line thermalmonitoring

3 PMUs ABB RES521


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Wide Area Monitoring SystemsPSGuard in EGAT (Thailand)

Since 2005 (First WAMS in Asia) 4 PMUs ABB RES521

Monitor stability of heavily loaded 230 kV transmission linesbetween southern and central region of Thailand

Application of Power Oscillation Monitoring to detect powerswings


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Documents

1KHL501042 PSGuard WAMS Overview 2012-04