However, there are many other parties involved in creating, propagating, and solving power quality problems (Figure 2). Power quality standards must provide guidelines, recommendations, and limits to help assure compatibility between end use equipment and the system where it is applied. The standards affect all of the parties shown in Figure 2.
IEC power quality standards. It is important to note that the standard defines the measurement methods, establishes a guide for the interpretation of the results, and specifies the performance of the power quality meter. It does not give guidelines on the design for the instrument itself.
Scope; p.9.) The power quality parameters described are power frequency, magnitude of the supply voltage, flicker, supply voltage sags (dips) and swells, voltage interruptions, transient overvoltages, supply voltage unbalance, voltage and current harmonics, voltage interharmonics and mains signaling on the supply voltage and rapid voltage changes.
It is also applicable to the devices that need to verify compliance of the standard. Class S is used for power quality assessment, statistical analysis applications, and diagnostics of power quality problems with low uncertainty. The instrument in this class can report a limited subset of the parameters defined by the standard.
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Power quality is a very complex subject, but to understand the overall goals of the Open Power Quality project, a simplified understanding should suffice.
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Figure 2. Players That Influence End-Use Power Quality There is active interest in this country as well as the rest of the world to establish power quality standards to deal with …
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Power quality is a very complex subject, but to understand the overall goals of the Open Power Quality project, a simplified understanding should suffice.
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