Wang Bin & Michael Ho, TIIAE 2011
Power management system
© ABB GroupSeptember 5, 2011 | Slide 2
Content
IntroductionSystem configurationFunctionality ReferenceSummaryLive demonstrationQ & A
© ABB GroupSeptember 5, 2011 | Slide 3
Content
IntroductionDefinition TaskOperational DriversApplication Areas
System configurationFunctionality ReferenceSummaryLive demonstrationQ & A
Terminology
PMS – Power Management SystemLMS – Load Management SystemPDCS – Power Distribution Control SystemENMC – Electrical Network Monitoring & Control SystemECS – Electrical Control SystemELICS – Electrical Integrated Control SystemIPCS – Integrated Protection & Control System
PMS is a control system:To monitor and control electrical switchgear and equipmentTo optimise electricity generation and usage and to prevent major disturbances & plant outages (blackouts)To coodinate power generation & large loads.
Task of Power Management System
Avoiding blackouts in industrial plants!Power SharingLoad Shedding
Critical LoadsLimited In-plant GenerationInsufficient reliability of grid supply
Operational Drivers for PMS
Load Shedding}Several GeneratorsPower Sharing with other plants/grids Power Control}Generator Modes and Operation Transformer Control and Monitoring Circuit Breaker Operation
Object Control}Connection to other plants/grids Bus-Tie operation
Synchronization}
LNGPlants
StorageTerminals
FloatingProduction
Onshore Production
Jobbers
OilDistribution
PowerPlants
ChemicalPlants
O>ankers
SubseaProduction
Marine
Loading
SalesTerminal
Consumer Mfg
SalesTerminal
SalesTerminal
Drilling
OffshoreProduction
Boosting Station Refineries
Chemical Terminals
Gas Plants
Pipelines & Terminals
Gas Distribution
Lube OilPlants
Primary Distribution ProcessingProduction Secondary Distribution
IndustrialIT PMS
Main Application Areas in O&G Supply Chain
© ABB GroupSeptember 5, 2011 | Slide 8
Content
IntroductionSystem configurationFunctionality ReferenceSummaryLive demonstrationQ & A
PMS System Architecture
© ABB GroupSeptember 5, 2011 | Slide 10
Content
IntroductionSystem configurationFunctionality
Load SheddingTurbine ControlGenerator ControlActive Power & Reactive Power ControlSCADA & IntegrationSynchronization
ReferenceSummaryLive demonstrationQ & A
Load Shedding: The typesFast load sheddingThe fast load shedding function is initiated when the position change of a critical breaker will result in a network where the maximum available power produced is less than the total consumed power. The fast load shedding is essential to the power management system because it acts fast and determines if a trip of a critical breaker will require load shedding.Under-frequency load sheddingThe under-frequency load shedding function is triggered when an input signal from a dedicated underfrequency relay detects that the frequency level has dropped below a predetermined value. The function supports four levels (stages) of under-frequency. The under-frequency load shedding is important because it acts as a secondary (backup) function to the fast load shedding function, in case a trip of a critical breaker is not detected or the actual shed power is not adequate to recover the frequency level.Overload load sheddingThe overload shedding function applies when a network configuration is connected to a grid and power is imported from the grid, as consequence of an imbalance. If the amount of the imported power exceeds a predetermined allowed limit for a time duration which also exceeds a predefined limit, the overload shedding is initiated.
Display Load Shedding SLD (before)
2.2 1.8 1.8 2.13.3
2.50.11.57.25.7
MW MWMW MW
MW
MW
MW
Hz
kV
Generator trip
Display Load Shedding SLD (after)
0.0 1.8 1.8 2.13.3
2.50.11.54.83.9
MW MWMW MW
MW
MW
MW
Hz
kV
Ethernet TCP/IPEthernet TCP/IPEthernet TCP/IPEthernet TCP/IP
Display Load Shedding SLD (after)
0.0 1.8 1.8 2.13.3
2.50.11.54.83.9
MW MWMW MW
MW
MW
MW
Hz
kV
Display Accumulated LoadShed table
Turbine Control
Primary Turbine ControllerDroop or isochronous
PMS provides:Manual control (Droop)Manual MW setpointAutomatic frequency controlAutomatic setpoint control (MW sharing)Automatic mode change:
CB tripTurbine trip etc.
Generator Control
Primary AVR:Droop or voltage control
PMS provides:Manual control (Droop)Manual setpoint control (setpoint is PF)Automatic Voltage Control (AVR receives raise/lower from PMS)Automatic setpoint control (MVar sharing)Automatic mode change:
CB trip
MinimumExcitation
Rotor Instability Line
OperatingMinimum
Turbine Maximum
P
Q-LagQ-Lead
Maximum Excitation(Rotor Heating)
MVA-circle(Stator Heating)
MinimumPF-Leading
MinimumPF-lagging
Capability Diagram
P
Q-LagQ-Lead
Active and Reactive Power ControlIn island operation:
Maintain system frequencyMaintain system voltage
Connected to grid:Control active power exchangeControl re-active power exchange
Share active and reactive power amongst the machines
Participation factorsEfficient Power Generation optimizationSpinning Reserve optimizationStandby optimizationNOx constraints
ObjectivesCoordinated control of power generationAchieve stable operation
Supervision, Control, and Data Acquisition
Clearly Structured PresentationControls - Select Before ExecuteStatus IndicationsTime Tagged Events (1 ms resolution)Alarm handling, Reports, TrendsSupervision and Self DiagnosticsSingle Window conceptInterface with upper-level control system, such as DCS
Measuring of U,I,E, calculation of P & Q
Monitoring & Control
Interlockings
Alarm annunciation
Event Time Tagging
Disturbance Recording
Local storage of trip-events
Integration with Protection & Control Units
Time synchronization
Relay parameterization
Synchronisation
Local Manual Perform on the synchronization panelManually raise/lower using push button Issue close command by using a dedicated close button by mean of watching indication of synchronoscope
Local AutomaticPerform on the synchronization panelPush start synchronization buttonSynchrotact to start generating lower/raise commands in search for synchronism. Once this is achieve, the synchrotact will automatically issue the close command.
Remote Automatic
Synchronisation Panel
© ABB GroupSeptember 5, 2011 | Slide 25
Content
IntroductionFunctionality ReferenceSummaryLive demonstrationQ & A
Named Customer References
ABB delivers Industrial IT solution to the Statoil Hammerfest, Norway LNG Plant
ABB delivers Industrial IT solution to the Sakhalin II LNG Plant, Russia
© ABB GroupSeptember 5, 2011 | Slide 29
Content
IntroductionFunctionality ReferenceSummaryLive demonstrationQ & A
Maintaining a good Power Factor
The total accumulated switched-off shortcurrents by a circuitbreaker or the number of generator starts are a trigger for maintenanceNo need for big oversizing of primary equipment
Power Control, Standby Optimization, n+1 Criteria, SCADA, etc. are performed by the system and not by the operators
The Human Machine Interfaces for all the electrical sub-systems can be integrated in the Energy Management SystemSerial interfaces with protection & control units avoid spaghetti wiring & cable ducts
A B B T r a n s m i t O yN e t w o r k P a r t n e r
FEEDER TERMINAL REF541A B B N e t w o r k P a r t n e r
Uaux = 80 .. .265 Vdc /ac
fn = 50 Hz
In = 1/5 A (I)
1M RS xxxxxx
98 15 0Un = 100 /1 10 V (U)
Uon = 1 00/110 V (Uo)
Ion = 1/5 A (Io)
9 509
Summary: ABB PMS allows you to:
Avoid black-outs (up to 500 kUSD / hour)Power control including voltage control, frequency control, sharing power among generators and tie-line(s).High Speed Contingency Load Shedding (< 100 ms.)
Reduce electricity costsPeak-shavingRe-active Power Control & Sharing
In case of a shortage of electrical power, secure the available power to critical loads by switching off the none important loads according to dynamic load tables
?
Limit electrical import during peak time and reduce peak based charges
Minimize operational costsDecreased number of operatorsEvent driven maintenance
Single Window conceptTransformer Overload Management
In case of a shortage of electrical power, secure the available power to critical loads by switching off the none important loads according to dynamic load tables
?
Optimizing the stability of the operation of the electrical generation- and distribution network of a plant
Minimized cabling and engineeringOptimized network design
Reduce investment costs
Summary: Why ABB PMS?In-depth knowledge of the electrical process20 years experience in PMS implementations across the world(green-field and brown-field plants)Standard software, well documented, tested, proven technologyFast Response Time for: Load Shedding, Mode Control, Power Control, Re-accelerationHigh Resolution and Accuracy of Sequence of Event recordingComply to class 3 EMC immunity Single responsibility: One supplier for PMS integrated with switchgear, protection, governor, excitation, transformer, tap changer, Motor Control Centre, Variable Speed Drive, etc.Experience with EPC’s like: CB&I, Bechtel, Chiyoda, Fluor Daniel, Foster Wheeler, JGC, Kellogg, Larson & Tubro, Mitsubisi, Snamprogetti, Technip, Toyo, Toshiba, Hyundai, etc.
Live Demonstration
Q&A
Local Contact:
Michael Ho Email: [email protected]: +886 2 87516090 #343Mobile: 0937-010658
Regional PMS Centre:
Wang BinEmail: [email protected]: +65 6773 8874Mobile: +65 98367539
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