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©2013 | Proprietary to Ventyx, An ABB Company

Power system Operation and Control

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Presenter, BU PSN, December 2009

Ventyx (ABB) Network Manager™ Overview

Saeed Rahimi, Guest Lecture at Lund University, 16 October 2013

Which important equipment we have in our power system?What do we know about power flow?Why do we need to know how much power is flowing in the network?When we do power flow, what is the relevant time?How much we can trust in our power flow results? (hint: accuracy of measurement)What do we need to handle all these complexity?

Warm-up

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Ventyx an ABB Company, who are we?Product Solution Overview

SCADAGMSEMSDMS

Demo of ABB Network Manager™Summary

Contents

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Network ManagerVentyx, an ABB Company, who are we?

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VENTYX brings together industry leaders Ventyx, Mincom and ABB Network Control to create the world’s most complete enterprise software solution provider, backed by the global reach of ABB, that optimizes the assets and critical operations of customers in essential industries.

Who is VENTYX?

Network Control

IT/OT Convergence Transforms Real-time Data into Actionable Insights That Drive Operational Excellence

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Information Technology Synthesizes big data into critical insights and automated actions

Insights drive just-in-time work to optimize enterprise

Large volumes of data for visibility

into condition and status

Operational TechnologyMonitors and controls critical assets

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Benefits of the IT/OT Converged Enterprise

Respond fasterto real time conditions

Gain insight for business process improvement

Prioritize work to reduce the risk of outages

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Critical Solutions for Energy Industries

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It Is All About Managing Complexity

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Market Operation

Portfolio Optimization

Generation

Asset Management

T & D Energy Demand

Industry & Household

Contracts SettlementsSettlements Contracts

BidsSchedulesSettlements

BidsSchedules

Settlements

SchedulesTransfer Capabilities

EnergyEnergy

Operation & ConstraintsContractual flow

Physical flow

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Network ManagerSCADA (Supervisory Control & Data Acquisition)

SCADA (Supervisory Control & Data Acquisition)

User benefitsScalable for easy expansion of data and functionalityImmediate access to power system statusFast and easy monitoring of power system securityDirect preventive actions and restoration even during disturbance conditionsSupport for multiple redundancies at multiple sites

FeaturesData AcquisitionRedundant Data ProcessingCalculationsSupervisory ControlUser-defined control sequencesTaggingFlexible Operator AuthorityMap board, digital readouts, strip chart recordersAlarm Handling & PresentationLoad Shed and RestoreDisturbance Data handlingControl System SupervisionNetwork Topology Service Information SystemEquipment Statistics

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Network Manager Graphical User Interface

FeaturesOn-line Configurable Menus and ToolbarsDynamic Network ColoringSmart TooltipsTime Series TrendsGraphical presentation (xy plots, bar charts, pie charts, etc.)On-line Context Sensitive HelpMicrosoft Excel for Report presentationSupport for large screen display wallsRemote Workstations based on Thin Client technologyWeb access without additional engineering or software installations

User BenefitsImproved situational awarenessIntuitive usage – less risk for operational errorsReduced operator training costsAdvanced integration with minimum costs

PED 500 Display BuilderWS 500 Operator Station

Rich client or Thin client

Network Manager Situational Awareness

FeaturesDynamic Contour Coloring, color shades represent values above or below the defined normal state at the point.Fed by the measured or calculated values from a subset of system points, e.g., voltage, frequency, generation deviations and MVar measurements

User BenefitsImproved situational awarenessIntuitive usage – less risk for operational errorsDirect overview of the network status

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Real-time generation dashboard

Generation schedule vs actual generation

Network ManagerVisualization

Communications Front EndFeatures

Facilitates real-time Data Acquisition and Supervisory Control of power stations and substationsDistributed configurationsInterfacing RTUs, PMUs, IEDs and Substation Automation systemsLibrary of standard and proprietary protocols (IEC -101, -104, DNP 3.0, many others)Encrypted communication with SCADA server

User BenefitsSupport of existing communication standardsFlexibility in communications media and configurationsSimplified Data Engineering including RTU downloading

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Network ManagerGMS (Generation Management System) Overview

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Automatic Generation Control, AGC

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Control objectives;• system frequency, • net area interchange • constant power production according to generation plan

Calculates desired generation and performs closed-loop control of selected generating units

Reduces excessive duty, unit maintenance and repair cost by monitoring unit response and applying operational constraints

Look-ahead capability to improve control performance

Figure: AGC hydro chain controlled power plants in Slovenia. Source, DEM Maribor, Slovenia

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Economic Dispatch

Handles thermal as well as hydro power plants

Establishes Optimum Base points for Generating Units in a manner that:

• Minimizes total system production cost• Considers transmission constraints and losses• Enforces unit economic and response rate limits

Ability to Utilize Selective:• Heat rate curves• Fuel cost• Water values• Marginal water rate curves• Supports Emission Constraints through an interface with

Resource Scheduling (Shadow Prices + Limits)• Supports Combined Cycle Plants and jointly owned units• Event-triggered executions following relevant changes in

system or unit conditions

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Network ManagerEMS (Energy Management System) Overview

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Main Features• Determines optimum network operation with regard to power flows and voltage

profile• Security assessment and early detection of network congestion, identifying

equipment overload and proximity to voltage collapse• Record disturbances, perform analysis reporting and restoration tasks

Benefits• Accurate information about the network state• Secure and efficient network operation, in regulated

and deregulated markets• Improved quality of supply and reduced probability of

system blackouts• High-fidelity Training Simulator for advanced operator training, under steady-state

and dynamic power system conditions

EMS - Secure and Reliable Power Systems Operation

Economy

Quality

Safety

Security

Network Manager SCADA/EMS ComponentsTransmission Network Applications – Real Time

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Telemetry Snapshot (SNP)Status and Analog Retrieval (SAR)Network Model Builder (NMB)Bad Topology Detection (BTD)Bus Scheduler (BSK)State Estimator (SE)SE Hourly Save Cases (SES)Optimal Power Flow (OPF)Security Analysis (SA)Security Constrained Dispatch (SCD)Voltage Stabi lity Analysis(VSA)Network Sensitivities (NS)Network Parameter Update (NPU)Reactive Power Reserve (RPR) Interlock Power Flow and Security Analysis (ISR, INMB, IDPF, ISA)

PatternData

AnalogMeasurements

TuningParametersStatus

Measurements

ICCP Data

SAR

SES

OPF

SA

SCD

NS

NPU

RPR

ISR INMB IDPF ISA

OperatorEntries

Maintenance Scheduling

Data

SNP

NMB

BTD

BSK SE

VSA

6

.

...

..

( )6015

State and flow variables

Complete & consistent network representation

Measurements

Bus/branch model

Physical laws

Voltages & angles

U = R * I

••

Error

X

V1, 1,V2, 2...Un n)

126 kV0

( )33.2-28.6

( )

( )( )61.6

19.4

29.550

29.550

( )6015

119 kV-5.44

( )28.448

137 kV-1.43 Input:

Output:

Solution

126 kV

( )6015

( )27.548

( )3050

( )3050

SCADA measurements

State Estimator - Overview

Security Analysis - Solution & Benefits

OverloadVoltage violationCascading

L

L

L

G

G

P > Limit

V > Limit

Case 1 Benefits:Identifying bottlenecksAdds confidence to the operatorImproved reliabilityAid in maintenance planningReal time evaluation of security

Short Circuit Analysis - Solution & Features

Unbalanced faults (single-phase to ground, double-phase to ground, phase-to-phase)

Balanced three-phase faults

Simulation of topology changes

L

L

L

G

G

Three fault classes:

standard faults - bus faults

intermediate faults - along lines

phase-open faults

Bus short-circuit violationsand voltages in one-line diagrams

Sub transient currents

Optimal Power Flow & SCD - Objectives & Benefits

Cost minimization

Loss minimization

Security improvement

Corrective rescheduling

L

L

L

G

GP12 - P21 = 0.2

P = 50 MWP12

VP = 100 MW

Benefits:

Main objectives:

Evaluate power system performance

Reduce production costs

Security constrained ED

Reduce transmission losses

Operation closer to network limits

Improve security

Field proven

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Network Manager™DMS (Distribution Management System) Overview

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Network Manager DMS IntroductionBusiness Application

Models sub-transmission, substation, and distribution (including MV/LV) networksImprovement of distribution operations performance

Main FeaturesTrouble Call ManagementOutage ManagementCrew ManagementDistribution Performance ReportingSwitch Order Management and Automatic GenerationEngineering Analysis of Unbalanced Distribution SystemsReal-time Simulation ModeStorm and Major Event Management

Customer BenefitsEfficient stand-alone operation of electrical distribution networksFacilitates access of information on physical assets, consumers and field operationsIntuitive display of accurate central informationIntegration with GIS, WMS, CIS, AMI, IVR, GPS, Mobile Dispatch

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Distribution Platform & Applications

Network ManagerGraphical User Interface

DMS Applications

Distribution Database and Network Model

Infrastructure

Graphical Data Engineering

External Adaptors Data Exchange

Process Communication

Front End

Historian and Data

Warehouse

SCADA

External Applications and Systems

• Switch Order Management• Line Unloading• Referral Management• Outage Notifications• Outage Reporting

• Trouble Call Management• Outage Management• Operations Management• Crew Management• Operator Logs

• Load Allocation • Balanced Load Flow• Unbalanced Load Flow• Fault Location• Restoration and Switching

Analysis

• GIS• CIS• AMI / MDM• Substation / FeederGateways

• Mobile WorkforceManagement

• Interactive VoiceResponse

• Work ManagementSystem

DMS Adaptors

Network ManagerGraphical User Interface

DMS Applications

Distribution Database and Network Model

Infrastructure

Graphical Data Engineering

External Adaptors Data Exchange

Process Communication

Front End

Historian and Data

Warehouse

SCADA

External Applications and Systems

• Switch Order Management• Line Unloading• Referral Management• Outage Notifications• Outage Reporting

• Trouble Call Management• Outage Management• Operations Management• Crew Management• Operator Logs

• Load Allocation • Balanced Load Flow• Unbalanced Load Flow• Fault Location• Restoration and Switching

Analysis

• GIS• CIS• AMI / MDM• Substation / FeederGateways

• Mobile WorkforceManagement

• Interactive VoiceResponse

• Work ManagementSystem

DMS Adaptors

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Unbalanced Load Flow (UBLF)

• FeaturesHigh Performance Network Unbalanced Load Flow in DMS

Robust Newton-Raphson Algorithm

Multiple Swing Buses, Multiple Meters, Large Circuits

Radial and meshed networks including Co-generators and Loops

Three phase analysis and resultsMutually coupled impedance matrixWye-delta, delta-delta, wye-wye transformersGanged, unganged regulation

Limit Checks (Voltage, Device, Transformer, Line, Circuit)

Regulation (Transformers/Regulators, LCD’s, Capacitors)

Load Allocation for estimate of loads

BenefitsAllows operators to identify overloads and voltage

problems in real-time and for future switching scenarios

Switching can be performed faster and with confidence at closer margins

Contingency switching can be efficiently evaluated, either automatically or manually

Distribution power flow conditions can be continuously monitored

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Fault Location Application

• FeaturesEstimates location of fault

Uses as-operated network modelConnectivity and switch statusSource and circuit impedances

Uses short-circuit data from fieldRelays, recloser controls, RTUs

Estimated fault locations presentedto operator graphically and tabularly

Operator communicates the estimatedlocation of faults to field crews

BenefitsReduced outage time

Improved reliability indices

Increased customer satisfaction

Higher crew utilization

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Restoration Switching Analysis Application (RSA)

• Features

Provides automatic analysis of possible restoration switching paths

Determines how to isolate a fault and restore power

Provides automatic load flow analysis of multiple restoration paths

Operator can select restoration paths based on customers restored and feasibility of power flow

Benefits

Improved operator efficiencies during outages

Increased reliability and improved customer satisfaction

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Outage Management SystemOutage Management Applications

Trouble Call ManagementOutage AnalysisCrew ManagementOutage Information and Reporting

Switch Order ManagementSwitch order creation & managementSafety tags“What if” studiesEmergency switching

Graphical User InterfaceWorld map presentation with real-time dataCircuit Tracing and ColoringTemporary Network Devices

User BenefitsPlanned and unplanned outage handling based on SCADA inputs, trouble calls, and AMI integrationEfficient management of crewsAdvanced display, monitoring and analysis features for efficient, safe and optimal management of the distribution networks"What if" analysis allowing users to assess the impact of switching actions before making field changesIntegration (GIS, CIS, IVR, MWM, AMI, SCADA, etc.)

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Demo of ABB Network Manager™

Summary

Questions

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