BC Hydro's Transmission Reliability Margin Assessment in Total Transfer Capability Calculations

NERC requires considering the uncertainties in assessing the total transmission capability (TTC) by calculating a term called transmission reliability margin (TRM). As part of a new BC Hydro TTC calculator, an improved 2m +1 point estimation based method (PEM) was developed to estimate the standard...

Full description

Saved in:
Bibliographic Details
Published inIEEE transactions on power systems Vol. 28; no. 4; pp. 4796 - 4802
Main Authors Wenyuan Li, Vaahedi, Ebrahim, Zhenhua Lin
Format Journal Article
LanguageEnglish
Published IEEE 01.11.2013
Subjects
NERC reliability standards
point estimation method
Power system reliability
Power transmission
Stability analysis
Thermal stability
total transfer capability
transmission reliability margin
Uncertainty
Online AccessGet full text

Cover

More Information
Summary:NERC requires considering the uncertainties in assessing the total transmission capability (TTC) by calculating a term called transmission reliability margin (TRM). As part of a new BC Hydro TTC calculator, an improved 2m +1 point estimation based method (PEM) was developed to estimate the standard deviation of TTC due to the uncertainties of system parameters including forecasted system load, generation patterns, inter-tie schedules and change in projected load and dispatch conditions as a result of system stress. The standard deviation of TTC is used to determine TRM. The developed method has now been accepted as part of new BC Hydro's TTC calculator for determining TRM in real-time and pre-scheduling timeframes. Typical results on BC Hydro's large scale system, which were obtained using the developed TRM method, are presented in this paper. The presented TRM method has already been filed as an attachment to a BC Hydro's report to NERC for meeting the mandatory reliability compliance.
ISSN:0885-8950
1558-0679
DOI:10.1109/TPWRS.2013.2275748