WebPASSTM

Web Monitoring of Power Quality Data from BMI 8010 and 8020 PQNodes®

Electric utilities are increasingly providing power quality monitoring services to improve responsiveness to customer needs and boost competitiveness. WebPASSTM software from Electrotek Concepts® allows electric utilities to provide access to power system information at a level of detail not previously available.

The power disturbance data provided by WebPASS is important to both utilities and their customers. It helps to identify problems on the distribution and transmission system, as well as equipment sensitivity to disturbances generated on both sides of the meter.

Example of WebPASS output

WebPASS uses a World Wide Web (WWW) server to deliver power system disturbance data to engineers, customers, and representatives who need quick access to power quality data. A standard Web browser is used to access the data. Usage of the WWW HTTP protocol, client, and server eliminates the complexities and cost entailed in developing custom client-side software for accessing the power quality data. Since the data resides on the server, any required software updates can be loaded on the server rather than on individual workstations.

WebPASS system configuration

WebPASS is based on Electrotek's PASS® software, designed to work with Dranetz-BMI's 8010 and 8020 PQNodes®. These monitoring instruments are placed at each location where data is to be gathered, such as the building service entrance or on a primary bus, to gather detailed power quality disturbance and harmonics information.

WebPASS allows viewing of all previously downloaded data via a TCP/IP (the network protocol of the Internet) network connection on a local area network (intranet) and/or the Internet.

For example, if a user wants to look at power system disturbance events from a week ago, the user enters a password, selects the sites of interest, and the date/time range of interest. Once the user selects the desired options, an event summary table is displayed. From this page, the user can select which voltage or current phases are desired for a detailed view of the disturbance.

Select monitoring site and dates of interest

Once the user selects date/time range of interest, the Internet server searches the database for relevant events. An event summary table is then displayed, enabling the user to select individual events for further review. This summary table allows the user to quickly determine if a disturbance occurred at the time of the problem.

Power system disturbance event list

From this list, the user can select a variety of analysis and graphing options, and can view events from steady-state snapshots and as events over time.

CBEMA and ITI plots

Steady-state snapshot and RMS trend graphics

For more information, contact Electrotek at:

E-mail: info@electrotek.com

This document and all documents, figures, and programs published on the Electrotek WWW servers in the electrotek.com domain is the property of Electrotek Concepts. No part of these documents may be reproduced or transmitted in any form (other than from this original WWW server for the sole purpose of on-line viewing) or by any means, electronic or mechanical, for any purpose, without the express written permission of Electrotek Concepts, Inc.

"PASS" is a registered trademark of Electrotek Concepts, Inc.

"Electrotek Concepts" is a registered service mark of Electrotek Concepts, Inc.

"PQNode" is a registered trademark of Dranetz-BMI

Copyright © 1994-2008 Electrotek Concepts, Inc. All rights reserved.

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