sccur 98 california state polytechnic university, pomona sce/eic
TRANSCRIPT
EIC/SCE“Diagnosis and Development of Solution for Year 2000 Problems in a Supervisory Control
and Data Acquisition System”
Southern California Edison
2nd Largest Electric Utility Company in CACharging Equipment for EV-1 CarUltra-Net SCADA System
Ultra-Net System
Designed in Part by Dr. Ross Fernandes$30 million in avoided costsIndependent team to check System for Y2K
problems
Ultra-Net System
Supervisory Control and Data AcquisitionChecks VoltagesTests for InstabilitiesOperates Circuit Breakers
Ultra-Net Hub Terminal
Hub Indoor
Equipment
USAT Master Hub
PC
Modem
GE-Harris SCADA Master
Present Each Group of 7 as a pseudo RTU
Ultra-Net Remote Terminals
Each USAT has a 4-digit Digital Data Address (DDA) Number
USAT 1
USAT 7
Mini RTU
Mini RTU
Goal
Diagnose and Develop Solutions for Y2K Problems Associated with Edison’s Ultra-Net Satellite Communication Network
Methodology
1. Research and request for equipment
2. Development of test algorithms
3. Development of solution algorithms
4. Modification of solution algorithms
PHASE ONE
Research and equipment acquisitionY2K researchProblem specificationRequest hardware-- two laptopsRequest software-- RTU software
PHASE TWO
Development of test algorithmSystem AnalysisDevelop test proceduresExecute test proceduresAnalyze test results
Our Basic Test procedure:
1. Set System Clock
(e.g. 12-31-99 11:50pm)
2. Operate Relay
3. Set in Scan Mode
4. Check Time
5. Operate Relay again
Test Dates
12/31/1999 - 1/1/2000
(Test for transition period)
2/29/2000 - 3/1/2000
( Test for leap year)
PHASE FOUR
Modification of solution algorithmFeedback concerning possible solutionAdjustment of solution algorithm
Communication:
Problem : Effective
Communication
Solution: E-mail Monthly Meeting with
Client Weekly Meeting
Unorthodox Approach
Problem: Testing the Y2K problem
without the Source Code
Solution: System Analysis
Approach Track Project Plan
Weekly
Estimating Schedule for Finding Problems and Solutions
Problem: Time requirement for
define and solve the problem is very critical
Solution:
Keep track of the Project Plan Weekly
Summary
• What is Y2K bug in general
• How does the Ultra Net SCADA system work
• Our task- test the RTU program for Y2K problem
• Our methodology to solve the Y2K problem
Ultra-Net System
Ultra-Net RTU collects and transmits
data
Ku-band RF Satellite and link
A commercial band satellite provides the data link between the Ultra-Net RTUs and the Hub Terminal Unit
Hub Terminal Unit All the data acquisition
from the remote sites is collected here
G.E.-Harris SCADA Master
This automated station is responsible for any control protocol implementation