SCADA EMS.pdf

8/17/2019 SCADA EMS.pdf

1/35

Blackout 101Dr. B. Don Russell

Texas A&M University

Dr. Bruce Wollenberg

University of Minnesota

Mr. John McDonald

KEMA, Inc.

Dr. Pete Sauer

University of Illinois at Urbana-Champaign


2/35

An Electric Power System Tutorial - Part 2

Monitoring and Control of Power Systems

John McDonald

Sponsored by IEEE PES and IEEE-USA

Friday, February 6, 2004


3/35

Overview

What is a SCADA System?

How are SCADA Systems Used? What is a Substation Integration and Automation

System?

What are the Different Sources of Information?

SCADA Alarm Processing / Filtering Capabilities

System Factory and Site Testing Power System Action Time Frames


4/35

What is a SCADA System?

Supervisory Control and Data Acquisition (SCADA)

Supervisory Control => Remote Control of Field Devices

Data Acquisition => Monitoring of Field Conditions SCADA System Components

Master Station => System “Nerve Center” Located in

Electric Utility Energy Control Center (ECC);Dispatchers Use to Monitor and Control Power System

Field Devices => Needed Wherever There is Data to beSent to Master Station (Substations, Lines or Feeders)

Communications => Links Master Station with FieldDevices; Continuous 24 by 7 Operation


5/35

Dispatcher Console300 MHz RISC Processor

256MB RAM, 9GB HDD,

CD-ROM, (2) 21” CRTs

Redundant SCADA System – Configuration Overview

SCADA Workstation/ServersDispatcher Consoles300 MHz RISC Processor

256MB RAM, (2) 9GB HDD,


Historical Data Server 300 MHz RISC Processor

512MB RAM, (2) 9GB HDD

CD-ROM

Dispatcher Consoles700 MHz Pentium III PC

128MB RAM, 9.1GB HDD


Remote User Stations600 MHz Pentium II PC

64MB RAM, 6GB HDD

CD-ROM, 56k Modem,

13.3” Active Color LCD

PSTN

Remote Access

Router

Laser Printer

10/100 Ethernet

Hubs

RTU Communication

Ports

Diagnostic Modem

LAN

Router

To Corporate

LAN

Port

Servers

Front-End

Processors

ICCP Node700 MHz Pentium III PC128MB RAM, 6.4GB HDD

CD-ROM, 17” CRT


6/35

Electric Utility Energy Control Center (ECC)


7/35

SCADA System

Master Station –

Computer Servers andCommunication

Equipment


8/35

SCADA System Master Station –

Dispatcher Console Equipment


9/35

One-Line (Single-Line) Diagram


10/35

Alarm Summary Display


11/35

Feeder Map Display


12/35

World Coordinate Display Schematic

Diagram


13/35

Electric Utility Substation


14/35

Remote Terminal Unit (RTU)


15/35

SCADA

SCADA/AGC EMS

DA DMS

Supervisory Controland Data Acquisition

SCADA/AutomaticGeneration Control

Energy ManagementSystem

Distribution AutomationSystem

Distribution Management System

How are SCADA Systems Used?


16/35

SCADA System

Primary Functions

Data Acquisition

Remote Control

User Interface

Areas of Responsibility

Historical Data Analysis

Report Writer


17/35

SCADA / AGC System

Primary Functions

Automatic Generation Control (AGC)

Economic Dispatch (ED) / Hydro

Allocator Interchange Transaction Scheduling


18/35

Energy Management System

(EMS) Primary Functions

Network Configuration / TopologyProcessor

State Estimation

Contingency Analysis

Three Phase Balanced Operator

Power Flow Optimal Power Flow

Dispatcher Training Simulator


19/35

Distribution Automation (DA)

System Primary Functions

Voltage Reduction

Load Management

Power Factor Control

Two-Way Distribution Communications Short-Term Load Forecasting

Fault Identification / Fault Isolation / Service

Restoration Interface to Intelligent Electronic Devices

(IEDs)


20/35

Distribution Management System (DMS)

Primary Functions

Three Phase Unbalanced Operator Power

Flow

Map Series Graphics

Interface to Automated Mapping / FacilitiesManagement (AM/FM) or GeographicInformation System (GIS)

Interface To Customer Information System(CIS)

Interface to Outage Management


21/35

Intelligent Electronic Device (IED) – the

Building Block of Substation Integration andAutomation

Any device incorporating one or moreprocessors with the capability to receive orsend data/control from or to an external

source (e.g., electronic multifunction meters,digital relays, controllers)


22/35

What is a Substation Integration andAutomation System?

Power System Equipment

(Transformers, Breakers)

IED Implementation

IED Integration

Substation Automation Applications

Utility Enterprise


23/35

Substation Integration and

Automation Systems


24/35

Substation User Interface


25/35

TelCo SystemTelCo SystemLAN/WANLAN/WAN

Web Pages with:Web Pages with:

ooRealReal--time valuestime values

ooRelay settingsRelay settings

ooFault recordsFault records

DFR recordsDFR records

Custom filesCustom files

Fault/OscillographyFault/Oscillography

data filesdata files

Web Browser Web Browser

RealReal--timetime

SCADASCADA

RealReal--timetime

data & controlsdata & controls

44--wire lease linewire lease lineFrame relayFrame relay

ORACLE RdBORACLE RdB

Web server Web server

DNP3.0DNP3.0

All WANAll WAN

communications arecommunications are

via secure TCP/IPvia secure TCP/IP

RelaysRelays

MB+MB+Router Router

RTURTU

RealReal--time SCADAtime SCADA

data and controlsdata and controls

(any IED’s data)(any IED’s data)

Fault records, summariesFault records, summaries

and waveform data fromand waveform data from

relays (and settings)relays (and settings)

Web pages with AppletWeb pages with Applet

and Servlet (Java)and Servlet (Java)

software for updatessoftware for updates

What are the iff r nt

Sources of Information?


26/35

SCADA Alarm Processing /

Filtering Capabilities

Knowledge-Based Alarm Suppression

Direct Linkages (can use pseudo statuspoints)

Indirect Linkages Area of Responsibility

Use for each alarm window and each

printer Use to route alarms to proper

windows/dispatchers and/or printers


27/35


Filtering Capabilities (continued)

Priority

Each point has a priority level

Every alarm window has an assignablealarm priority level

By increasing the alarm priority level of an

alarm window, lower priority alarms aresuppressed from the alarm window


28/35

SCADA Alarm Processing / Filtering

Capabilities (continued)

Timed Alarm Suppression Each data point may be assigned a

transient filter

Used to suppress an alarm until it has

remained in the alarm state for the length

of time specified with the transient filter


29/35


Filtering Capabilities (continued)

Momentary Alarm Change Detect

Tracks rapid multiple state changes that

are recorded by the RTU Operations counter to track device

operations for maintenance reporting


30/35


Capabilities (continued) Alarm Acknowledge / Delete

Separate acknowledge and deleteactions

Alarm automatically deleted upon

acknowledgment if alarm has returned tonormal

On acknowledgment alarm will be

deleted from alarm list Alarm is deleted after a specified time

delay following acknowledgment of alarm


31/35


Capabilities (continued)

Historical Events File All events, including alarms, stored in a

daily file

Can be sorted and used to create reports

S t F t T ti


32/35

System Factory Testing

S t Sit T ti


33/35

System Site Testing


34/35

Power System Action Time Frames

0.1 1 10 100 1000 10000

Time - Seconds

transient stability long-term stability

generator/excitationdynamics

LTCs & dist.

voltage reg.

excitation limiting

line/transformer overload

SVC, DC

mech.

switched cap’s

system operator

under-voltage

load shedding

relaying, incl. under-frequencyload shedding

SCADA


35/35

This is the end of Part 2. You may select from thefollowing options, or close this window to return to

the site where you linked to this presentation.

Part 1

Part 2

Part 3

PES Web Site

IEEE USA Web Site
http://cms.ieee.org:8001/portal/cms_docs/pes/subpages/meetings-folder/other_meetings/Blackout_101_part_1.pdfhttp://cms.ieee.org:8001/portal/cms_docs/pes/subpages/meetings-folder/other_meetings/Blackout_101_part_2.pdfhttp://cms.ieee.org:8001/portal/cms_docs/pes/subpages/meetings-folder/other_meetings/Blackout_101_part_3.pdfhttp://www.ieee.org/powerhttp://www.ieeeusa.org/http://www.ieeeusa.org/http://www.ieee.org/powerhttp://cms.ieee.org:8001/portal/cms_docs/pes/subpages/meetings-folder/other_meetings/Blackout_101_part_3.pdfhttp://cms.ieee.org:8001/portal/cms_docs/pes/subpages/meetings-folder/other_meetings/Blackout_101_part_2.pdfhttp://cms.ieee.org:8001/portal/cms_docs/pes/subpages/meetings-folder/other_meetings/Blackout_101_part_1.pdf

SCADA EMS.pdf

Documents

Transcript of SCADA EMS.pdf