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Wednesday, October 26
PQT 07
Monitoring 1
1:30 pm-3:30 pm
Power Quality, the perfect sine wave is the goal for the power being provided to the load. The Power Reliability goal is the ability to maintain that perfect sine wave. As a consequence Power Quality and Reliability maintenance or monitoring becomes a full-time requirement for the operator/user in order to make sure that the load is receiving the best power possible thus insuring the system is fully functional and operating as it should.
This series of presentations takes an in-depth look at monitoring and examines it across the spectrum from set-up to measurement. Including the development o programs to reduce the data to its most meaningful magnitude and become a specific yet powerful troubleshooting tool.
Product parameters are covered from laptop software to large kilowatt system operation. The components include monitors, communications channels, data validation software, displays and reporting. A most useful session for those involved in or who wish to better understand the ramifications o sustaining Power Quality and Power Reliability through monitoring.
Paper Presentations
Using Low-cost, Single-Phase, Power Quality Measuring Instruments with PC Computers and PC Networks
Neil Hunt, Hillcrest Consulting Group
There are two issues in delivering quality power to computers and computer networks.
The first issue is delivering quality 120 volt, 60 cycle power to the computer’s AC power supply. In the Personal class of computer, AC power quality is frequently blamed for malfunction of the computer but there is, in most cases, no positive measurement made of the power quality due to the lack of adequate instrumentation.
The second issue is delivering quality low-voltage Ethernet signals to the networked workstation computers. Sources of network cable interference (noise) can be caused by cable runs being physically damaged, cable runs being improperly installed, or cable runs being in close proximity to sources of electromagnetic interference.
This seminar will demonstrate the use of two major brands of low-cost, single-phase, solid-state power quality measuring instruments. For the 60 cycle power instrument, low-cost is defined as less than $1000. For the Ethernet power instrument, low-cost is defined as less than $2000.
The quantitative data that is captured during a recording session will be input to a laptop software application to document the 60 cycle power and the Ethernet power.
Defining Requirements for Power Quality System Monitoring
Brian Kingham, Power Measurement
Power quality monitoring has evolved from device-specific analysis of an event to system-wide benchmarking and reporting. Whether implementing power quality improvements for customer satisfaction, competitive advantage, or to comply with regulatory requirements, utilities need advanced software systems to reduce analysis time, ease reporting and demonstrate the return on investment. This paper describes the necessary components of a power quality analysis system including monitors, communication channels, data validation software, graphical display and compliance reports. Means of addressing potential pitfalls such as late- or missing-data, biasing of statistical results due to planned outages and over-counting of power quality events are presented. The system described allows for power quality benchmarking to industry standards such as SARFI, power quality reliability reporting, and trending of key performance indicators to show improvements over time.
Failure Based Recording: Re-Thinking Power Quality Monitors
Brian Blanchette, Ideal Industries
Advocating a minimalist approach, the needs for power quality recording are reduced to what is important for a consumer to make money, or save money in the process of recording and monitoring power quality. A redefinition of the information required, as well a substantial cost reduction is discussed.
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Saturday, February 4, 2012
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