IEEE 1250 2018

$42.25

IEEE Guide for Identifying and Improving Voltage Quality in Power Systems

Published By	Publication Date	Number of Pages
IEEE	2018	63

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Description

Revision Standard – Active. The use of some electrical equipment attached to typical power systems creates power quality concerns. There is an increasing awareness that some equipment is not designed to withstand the surges, faults, distortion, and reclosing duty present on typical utility distribution systems. Traditional concerns about steady-state voltage levels and light flicker due to voltage fluctuation also remain. These concerns are addressed by this guide by documenting typical levels of these aspects of power quality and indicating how to improve them. Othere documents that treat these subjects in more detail are referenced.

PDF Catalog

PDF Pages	PDF Title
1	IEEE Std 1250-2018 Front Cover
2	Title page
4	Important Notices and Disclaimers Concerning IEEE Standards Documents
7	Participants
9	Contents
10	1. Overview 1.1 Scope 1.2 Purpose 2. The power system 2.1 Introduction
11	2.2 Overview of power systems
13	3. Identifying power quality in electrical systems 3.1 Introduction
14	3.2 Basic types of power quality variations 3.3 Steady-state (continuous) voltage characteristics
17	3.3.1 Voltage regulation 3.3.1.1 Recommended limit and assessment method 3.3.1.2 Example survey
18	3.3.2 Voltage imbalance
21	3.3.2.1 Recommended limit and assessment method 3.3.2.2 Example surveys
22	3.3.3 Voltage distortion 3.3.3.1 Recommend limits and survey methods
23	3.3.3.2 Example survey
25	3.3.3.3 Higher frequency harmonics
26	3.3.4 Voltage fluctuations
28	3.3.4.1 Basic EMC concepts related to voltage fluctuations 3.3.4.2 Recommended limits and assessment method
29	3.3.5 Summary of steady-state power quality performance levels 3.4 Disturbances
30	3.4.1 Reliability 3.4.2 Voltage sags and momentary interruptions
35	3.4.3 Transients
36	3.4.4 Frequency deviations
37	3.4.4.1 Large generation/load imbalances 3.4.4.2 Major blackouts 3.5 Conclusions 4. Susceptibility of power system loads 4.1 Types of susceptible loads
38	4.1.1 Computers 4.1.2 Process control
39	4.1.3 Telecommunications 4.1.4 Electric arc lighting 4.1.5 Consumer electronics 4.1.6 Adjustable speed drives
40	4.2 Ride-through capability 5. Power quality improvements for end users
41	5.1 End user wiring and grounding 5.1.1 Grounding, noise elimination, and circuit design 5.2 Premium power solutions 5.2.1 Static transfer switch (with dual feed)
43	5.2.2 Dynamic voltage restorer
44	5.3 End-user power conditioning (within the facility) 5.3.1 Overview of power conditioners 5.3.2 High-reliability power backup systems
45	5.3.3 Uninterruptible power supply
46	5.3.3.1 Standby UPS systems
47	5.3.3.2 Online UPS systems 5.3.3.3 Rotary UPS systems 5.3.4 Power distribution units (PDUs)
48	5.3.5 Voltage sag correctors 5.3.5.1 Constant voltage transformers (CVT)
49	5.3.5.2 Motor-generator sets
50	5.3.5.3 Active voltage conditioner 5.4 Controlling harmonics 5.4.1 Harmonics at point of use
51	5.4.2 Harmonic filters
52	5.5 Surge protective devices (SPDs) 5.6 Special considerations for variable frequency drives (VFDs) 5.6.1 Input line reactors 5.6.2 Effect of VFD inverter switching pulses on motors
53	5.7 Special considerations for residential loads 5.8 Economic analysis of power conditioning alternatives
54	5.8.1 Cost/benefit considerations
55	Annex A (informative) Glossary
58	Annex B (informative) Lookup table of standards
59	Annex C (informative) Bibliography
63	Back Cover