IEEE 1346-1998 pdf download IEEE Recommended Practice for Evaluating Electric Power System Compatibility With Electronic Process Equipment
1. Overview
1.1 Purpose
The purpose of this document is to recommend a standard methodology for the technical and financial anal.
ysis of compatibility of process equipiment with an electric power svstem.
This recommended practice does not intend to set performance limits for utility systems, power distributiorsystems, or electronic process equipment. Rather, it shows how the performance data for each of these entities can be analyzed to evaluate their compatibility as a system in financial terms. The recommended methodology also provides standardization of methods, data, and analysis of power systems and equipment inevaluating compatibility so that compatibility can be discussed from a common frame of reference.
1.2 Scope
This recommended practice is intended to be applied at the planning or design stage of a system wherepower supply and equipment choices are still fexible and incompatibilities can be resolved. The cost of try.ing to fix an incompatible syste after installation is hundreds to thousands of times more than addressing itin the planning stage. Consequently, this document does not discuss troubleshooting or correcting existingpower quality problems.
Since voltage sags present the greatest financial loss due to compatibility, this first edition of the recom-mended practice develops a compatibility methodology specifically for voltage sags. However, compatibilityencompasses many other issues such as harmonics, surges, radiated interference, etc. As better informationis available on the environment/equipment response and experience is gained with this approach, compati-bility methodologies will be developed for other issues. To aid the evaluation of the non-sag compatibilityissues, a guideline list is included in 43
This recommended practice does not discuss technical options to improve compatibility. The alternatives areso numerous and evolving so quickly that such a listing would detract from the basic purpose of the docu-ment, which is to plan for compatibility.
Clause 4 is the heart of the document and contains the worksheets used for evaluating compatibility. Com-pleted worksheets provide an estimate of the number of disruptions, the financial loss, and financial analysisof alternatives associated with the compatibility of a system. The annexes provide the background and techniques necessary to apply the worksheets. They are financial analyses, power system performance, cquipment performance, and constructing the compatibility charts. An example analysis is provided in Annex E.
2. References
This recommended practice shall be used in conjunction with the following publications. When the follow-ing standards are superseded by an approved revision, the revision shall apply:
IEC 61000-4-11 (1994), Electromagnetic compatibility (EMC)-Part 4: Testing and measuring tech-niques–Section 11: Voltage dips, short interruptions and voltage variations.”
EEE Std 100-1996,IEEE Standard Dictionary of Electrical and Electronics Terms, 6th Edition.
IEEE Std 1159-1995,1EEE Recommended Practice for Monitoring Electric Power Quality.
EEE Std 1250-1995,1EEE Guide for Service to Equipment Sensitive to Momentary Voltage Disturbances
3. Definitions
3.1 Technical terms used in this recommended practice3.11 dip: See sag
3.1.2 dropout voltage: The voltage at which a device will release to its de-energized position (for this docu-ment, the voltage at which a device fails to operate).
3.1.3 interruption, momentary (power quality monitoring): A type of short duration variation. The com-plete loss of voltage (<0.1 pu) on one or more phase conductors for a time period between 0.5 cycles and 3 s
IEEE 1346-1998 pdf download
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