Half Day Lecture on Performance Evaluation of State Estimation at ERCOT Control Center by Dr. NDR Sarma on 27-12-2011

[Mithun M. Bhaskar]

 

The Institute of Electrical & Electronics Engineers (IEEE), Hyd. Section

PES/IAS/PELS Joint Chapter

 

Invites you for

  Half Day Lecture

on

Performance Evaluation of State Estimation at ERCOT Control Center

by

Dr. NDR Sarma,

Electricity Reliability Council of Texas (ERCOT) at Taylor, Texas, USA

Date            : December 27, 2011.

Venue         : APTRANSCO,Vidyutsoudha, Khairatabad, Hyderabad.

Time           : 1400 hrs. - 1700 hrs

Abstract:

 

Electric Reliability Council of Texas, Inc. (ERCOT) functions as the “independent organization” certified by the Public Utility Commission of Texas and is responsible for ensuring the reliability and adequacy of the regional electrical network and ensuring that electricity production and delivery are accurately accounted for among the generators and wholesale buyers and sellers in the ERCOT Region. To support its operations, ERCOT has multiple systems which include Energy Management System (EMS) and Market Managements System (MMS). In EMS there are several application functions running both in real-time and in study mode. The real-time applications include State Estimator, Contingency Analysis (CA) and Dynamic Stability Analysis tools. State Estimator (SE) is playing a key role in ERCOT energy and market management system, as the reliability and market systems tools depend on the results provided by SE.  The primary purpose of SE is to produce real-time network models. The real-time network model is a mathematical representation of the current conditions of the power grid. Based on these network models, operators will be able to make and justify technical and economic decisions such as congestion management and procurement of adequate ancillary services and uncover potential operational problems related to N-1 security, voltage and transient stability.  SE filters redundant measurement data and computes all bus loads and branch flows, whether they are operationally measured or not. Specifically, in ERCOT EMS, the State Estimator solution provides a starting point for the Real Time Contingency Analysis (RTCA), Voltage Security Assessment Tools (VSAT), Voltage Support Service (VSS) and other advanced network applications. It also provides data for various studies performed such as Outage Evaluation, week-ahead, day-ahead and hour-ahead. ERCOT uses ALSTOM EMS system for most of its EMS application functions.

 

This talk explains tools developed to monitor the performance of State Estimation at ERCOT Control Center.

 

Brief Bio-data of the Speaker:

 

Dr. N. D. R. Sarma obtained his B.Tech (Electrical) and M.Tech (Power Systems) degrees from National Institute of Technology (formerly, Regional Engineering College), Warangal, India in 1983 and 1986 respectively and Ph.D. degree from Indian Institute of Technology, Delhi, India in 1995. From Feb 1992 to October 2000 he was with the R&D Division of CMC Limited, Hyderabad, India, wherein he was involved in various projects in the areas of EMS and Distribution Automation. From October 1997 to June 1999 (on sabbatical leave from CMC), from November 2000 to May 2003 and from March 2006 to Aug 2007, he worked at Texas A&M University, College Station, Texas, USA as a Post Doctoral Research Associate. From June 2003 to Feb 2006, he worked at the International Institute of Information Technology, Hyderabad as Associate Professor, focusing on “IT for Power’. Since September 2007, he has been working at the Electricity Reliability Council of Texas (ERCOT) at Taylor, Texas, USA, in the Advanced Network Applications Group in its Operation Department. Dr. Sarma is involved in organizing several panel sessions at the IEEE Power Engineering Society (PES) General Meetings. He is active in the IEEE Working Group for State Estimation and leading a IEEE Task Force on ‘State Estimation Concepts and Terminology’. His areas of interest include Load Dispatch and Distribution Automation Systems for power utilities. He is a senior member of IEEE and a member of IEEE Power and Energy Society (PES).

 

Registrations        : Free

Queries :       Sri. S.Apparao,Secretary IEEE PES/IAS/PELS Hyderabad Chapter

  Telephone: 9848943077,

  E-mail: sampangi...@aptransco.gov.in

 

Thanks & Regards

Rao.Sampangi

Secretary, IEEE PES/IAS/PELS Hyderabad chapter