SCCUR 98 California State Polytechnic University, Pomona SCE/EIC.

SCCUR 98California State Polytechnic

University, Pomona

SCE/EIC

EIC/SCE“Diagnosis and Development of Solution for Year 2000 Problems in a Supervisory Control

and Data Acquisition System”

Engineering Interdisciplinary Clinic

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 RTU

Remote Terminal

Unit

Mini RTU

Mini RTU

Ku-Band Satellite and Link

Hub Terminal Unit

PC

G.E. Harris SCADA Master

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

What is a Y2K bug?

Most of the old software stores the

year in a 2-digit format

What is a Y2K bug?

99 = 1999

00 = ? 2000 or 1900

What is a Y2K bug?

ArithmeticComparisonsSorting FunctionsDates

Errors in:

Solutions to Y2K Problem

Field ExpansionBridging28 Year Clock Reversal

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

MINI - RTU

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 THREE

Development of solution algorithmSolution algorithms development

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

$2,200.00

$800.00

$50.00

$150.00$50.00

Laptop

Transportation

Film Developing Cost

Food

Marketing

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