Trends in SCADA Technology for

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5 Νοε 2013 (πριν από 4 χρόνια και 8 μέρες)

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Trends in SCADA Technology for
Public Power


William (Bill) Rambo

Vice President, Business Development

Survalent Technology Corporation

rambo@survalent.com


Mike Parker

Senior Electric System Dispatcher

Roseville Electric

mparker@roseville.ca.us


Technology

We are being

asked to do more…

with less

Technology

Technology and

the pace of change

are relentless….

Technology

Our systems

need

updating

Technology

Agenda


Evolution of SCADA


SCADA Costs


Web Technology


City of Roseville case study


Integration


Q & A

SCADA Timeline


Before SCADA


Simple Human
-
Machine Interfaces
provided basic
equipment monitoring


Limited information


Slow


Undependable


Messy…



Q: How long have SCADA Systems
been around?


A: SCADA systems have been used in
utilities & industry in the United States
since the 1960s

SCADA Timeline


Networks non
-
existent


Proprietary (expensive) hardware and
software


Limited communication protocols: strictly
scanning and controlling points within the
remote device


Limited graphics displays


Communications were slow, unreliable


SCADA Timeline

1960’s







1990’s


More powerful processors allowed for
distribution of individual SCADA system
functions across multiple systems


Improved the redundancy and
reliability of the system


Still largely proprietary software. PC
technology emerging


Information available in real time


Movement toward open system architecture


Windows based systems emerge


Possible now to distribute SCADA functionality across a
Wide Area Network and not just a Local Area Network


Easier for the user to connect third party peripheral
devices (such as monitors, printers, disk drives, tape
drives, etc.) to the system and/or the network


Internet Protocol (IP) for communication between the
master station and communications equipment allows for
Ethernet connectivity


Enhanced graphical displays

First Generation SCADA: Monolithic

Second Generation SCADA: Distributed

Third Generation SCADA: Networked


Integration of standard Information Technology


OS


Linux and Windows


limited UNIX


Increased use of Intel Processors (Windows and
Linux)


IP based RTU Communications (DNP/IP)


Integration of IED’s


Cyber Security


Post 9/11


SCADA connected to the enterprise

SCADA Timeline

SCADA Today

BOTTOM LINE:


Public Power Benefits tremendously!


SCADA is not just for larger utilities


SCADA

Costs

Price/

Performance

SCADA

Features

SCADA Timeline

Web Technology

SCADA Trends

SCADA Trends


Utilized to provide a secure interface to
SCADA


Provide transport for Data to and from
SCADA



Web Technology


Before Web Technology


Proprietary software required


Difficult (and potentially expensive) to give
multiple users access to the system


Limited access to SCADA data


Difficult to share access outside of the
enterprise


Web Technology

DMZ

Web
-
Server

Web Technology

Powerful application to serve
real
-
time SCADA information
across the entire enterprise:



Provides secure, read only
access to SCADA information
via a zero
-
maintenance web
browser client.


Eliminates multiple instances
of software to manage,



Custom web pages or,



Maintenance of a separate
system.

Web Technology


Instant, out
-
of
-
the
-
box SCADA
web server.


User
-
friendly
drill
-
down
interface to
view
configuration
and
information.


Tabular and
Graphical
Displays


Password protection


Off
-
loads client
workstation data
requests from SCADA
master


Common pre
-
configured interface
for all users, no need
to build custom
screens


Supports maps,
alarms, operations
messages, reports
and graphs


Automatically
retrieves data from
alternate master
during fail
-
over
condition.

Tabular Displays



Dynamic


Station
data,
hierarchical


Alarms and
operations
messages

Tabular Displays




Reports


Tagged devices


Abnormal points


Failed points


Manually set
points


Server uses GUI as SVG
graphics generator


Dynamic point updates


Dynamic trend graphs
and feeder coloring


Navigation


Automatic and manual
layer control


Leverage software
investment


Leverage your graphics
database investment


Graphics

City of Roseville Application

SCADA Trends

City of Roseville, California


Background


Situation


Solution


Benefits

Web Technology

City of Roseville, California


>43,000 meters


17 distribution substations


Population doubled in last
decade


6
-
8%System load increase
every year for past decade


Peak load 315 MW


SCADA System for 15 years


160 MW power plant coming
on
-
line in 2007

Web Technology

Situation


Only way to get into SCADA was via
single modem


Feeders at capacity


No 24 hour dispatch center


Need for access to SCADA outside
of business hours


MS Access database for tracking load
information had become support
nightmare


Getting data out of SCADA was
always a management issue for IT


Database size an issue for MS
Access


Many utility personnel who need
information from SCADA


Switching Power Marketing Services


Data input from ftp site


System load data to Power Marketer


Web Technology

Solution: Web Server


Web server


Real
-
time replication of
SCADA database to SQL
database


Historical data archive


Web server knows when
redundant SCADA servers fail
over
-

pulls data from primary
SCADA master


Reporting


data from historical
and real
-
time data for load
information


Web Technology

Benefits:


Easy access to SCADA


User ID and password


Multiple personnel can access


Security is maintained: Web
Server outside of SCADA firewall


Data in SQL database


Scalable, open platform


Web pages for sharing of near
real
-
time data


Internal utility employees


Power Marketer


Easy import of data, using web
technology back into SCADA
from power provider

Web Technology

Integration

SCADA Trends


SCADA data is useful in other parts of the
organization


Examples:


Engineering Analysis


Outage Management


Metrics


Load Management


Geographical Information Systems

Integration

www.multispeak.org


MultiSpeak
®
Project
Objectives

Industry
-
wide open initiative sponsored by the
National Rural Electric Cooperative Association
(NRECA) to facilitate development of software
interfaces needed by rural electric co
-
ops


Developed uniform interface definitions for data
exchange among commonly used software


Developed consensus among vendors about details
of the interfaces, including data dictionary, data
objects, and messaging framework


What is MultiSpeak?


Specification for data exchange interfaces


Treats software applications as “black boxes”


Does not limit vendors from developing new
features or working together to provide tighter
integration than presently supported by spec

What MultiSpeak Does


Defines which data objects need to be
exchanged between common software


Defines structure of those data objects


Specifies message structures and messaging
architectures


Supports real time and/or file
-
based data
exchanges


SCADA Price/Performance for Public
Power


Web Technology will provide value as an
enabling technology:


Interface to SCADA


Transport for data to/from SCADA


Integration of utility systems and
elimination of “silos” of data will allow
utilities to increase performance

Re
-
Cap

Questions?

Thank you!