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PEPCO’s Experience with Historian. EMS Users Group March 14, 2000 Potomac Electric Power Company. PEPCO Needs . Electric system data archive Corporate wide EMS data access Operations Planning Maintenance Data security. Historian System.

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pepco s experience with historian

PEPCO’s Experience with Historian

EMS Users Group

March 14, 2000

Potomac Electric Power Company

pepco needs
PEPCO Needs
  • Electric system data archive
  • Corporate wide EMS data access
    • Operations
    • Planning
    • Maintenance
  • Data security
historian system
Historian System
  • Collects & stores real time data from Energy Management System for archival
  • Architecture is client/server
  • Uses multiple compression algorithms
historian features
Historian Features
  • Collects the following data types with quality:
    • Status
    • Analogs
    • Accumulator
    • Data from the Ranger Integrated Data Base (IDB)
  • Provides interface to PC based commercial software (Excel, Word, etc.)
historian features cont
Historian Features (Cont.)
  • Provides input to applications such as load forecast, state estimation, etc.
  • Output in tabular or graphic form
  • Provides security
slide6

EMS

Data

Base

Historical

Data

Base

Historian System

  • Data flow overview

Microsoft EXCEL

SCADA

EMS

Applications

pepco historian users

PEPCO Historian Users

Operations

Planning

Maintenance

use of historian for operations
Use of Historian for Operations
  • Track current electric system conditions
    • Spreadsheet (tabular)
    • One line (graphical display)
  • Power Flow/Contingency Analysis
  • Retrieve historical data for switching decisions
  • Trend line loading and voltages
  • Clearance work
use of historian for planning
Use of Historian for Planning
  • Monitor equipment performance
  • Track system load and power factor profiles used in construction recommendations
  • Power flow/contingency analysis
  • Calculate electric system losses
use of historian for maintenance
Use of Historian for Maintenance
  • For PEPCO’s new Maintenance Management System
    • Help transition from preventive to predictive/proactive maintenance approach
maintenance system payoff
Maintenance System Payoff
  • Preparation for changing utility operations
  • Better track maintenance history and maintenance patterns
  • Better utilize work force for multi-skilling efforts
  • Provide better reliability of equipment readiness
historian examples
Historian Examples
  • Excel spreadsheets
  • One-lines
  • Charts and graphs
slide14

Washington, DC

Downtown

PEPCO

slide15

Washington, DC

Downtown

PEPCO

slide16

Washington, DC

Downtown

PEPCO

slide17

Washington, DC

Downtown

PEPCO

slide18

Washington, DC

Downtown

PEPCO

slide19

Washington, DC

Downtown

PEPCO

slide20

Washington, DC

Downtown

PEPCO

slide21

Washington, DC

Downtown

PEPCO

slide22

Washington, DC

Downtown

PEPCO

slide23

Washington, DC

Downtown

PEPCO

slide24

Washington, DC

Downtown

PEPCO

slide25

Washington, DC

Downtown

PEPCO

slide26

Washington, DC

Downtown

PEPCO

lmp and transmission congestion
LMP and Transmission Congestion

Four Representative LMPs--When Identical, No Transmission Congestion

future historian uses
Future Historian Uses
  • Study State Estimation
  • Distribution Automation
  • External/outside utility data storage
summary
Summary
  • Has capabilities that meet Pepco’s needs for data archiving, data access and data security
  • Excel interface provides for PC data analysis and graphical charting options
  • Large potential for future uses