PEPCOs Experience with Historian EMS Users Group March

PEPCO Needs • Electric system data archive • Corporate wide EMS data access –

Historian System • Collects & stores real time data from Energy Management System for

Historian Features • Collects the following data types with quality: – Status – Analogs

Historian Features (Cont. ) • Provides input to applications such as load forecast, state

Historian System • Data flow overview Microsoft EXCEL EMS Data Base Historical Data Base

PEPCO Historian Users • Operations • Planning • Maintenance

Use of Historian for Operations • Track current electric system conditions – Spreadsheet (tabular)

Use of Historian for Planning • Monitor equipment performance • Track system load and

Use of Historian for Maintenance • For PEPCO’s new Maintenance Management System – Help

Maintenance System Payoff • Preparation for changing utility operations • Better track maintenance history

Historian Examples • Excel spreadsheets • One-lines • Charts and graphs

LMP and Transmission Congestion Four Representative LMPs--When Identical, No Transmission Congestion

Transfer Limits and Actual Flows from PJM OASIS

Future Historian Uses • Study State Estimation • Distribution Automation • External/outside utility data

Summary • Has capabilities that meet Pepco’s needs for data archiving, data access and

Slides: 39

Download presentation

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 • Collects & stores real time data from Energy Management System for archival • Architecture is client/server • Uses multiple compression algorithms

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. ) • Provides input to applications such as load forecast, state estimation, etc. • Output in tabular or graphic form • Provides security

Historian System • Data flow overview Microsoft EXCEL EMS Data Base Historical Data Base SCADA EMS Applications

PEPCO Historian Users • Operations • Planning • Maintenance

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 • 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 • For PEPCO’s new Maintenance Management System – Help transition from preventive to predictive/proactive maintenance approach

Pepco’s IMMS Desired System Set Up

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 • Excel spreadsheets • One-lines • Charts and graphs

Washington, DC Downtown PEPCO

Operations Emergency Example

Historian One-Line Example

Frequency Deviation Example

Historian Excel Example

Lambda vs LMP Comparison Lambda LMP

LMP and Transmission Congestion Four Representative LMPs--When Identical, No Transmission Congestion

Transfer Limits and Actual Flows from PJM OASIS

Future Historian Uses • Study State Estimation • Distribution Automation • External/outside utility data storage

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