IEEE 1453.1 2012

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IEEE Guide–Adoption of IEC/TR 61000-3-7:2008, Electromagnetic compatibility (EMC)–Limits–Assessment of emission limits for the connection of fluctuating installations to MV, HV and EHV power systems

Published By	Publication Date	Number of Pages
IEEE	2012	78

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Description

Adoption Standard – Active. IEC/TR 61000-3-7:2008 is adopted by this guide. IEC 61000-3-7:2008 provides guidance on the principles that can be used as the basis for determining the requirements for the connection of fluctuating installations to MV, HV, and EHV power systems (LV installations are covered in other IEC documents). The primary objective of this guide is to provide guidance to system operators or owners on engineering practices that will facilitate adequate service quality for all connected customers. This guide provides a methodology to allocate the capacity of the system to absorb voltage fluctuations (i.e., flicker). However, it does not address how to mitigate voltage fluctuations, nor does it address how to increase the capacity of the system to absorb such disturbances. Since the procedures outlined in this guide are necessarily based on certain simplifying assumptions, the approach will not always provide an optimum solution. The recommended approach should be used with flexibility and engineering judgment, when applying the given assessment procedures in full or in part.

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PDF Pages	PDF Title
1	IEEE Std 1453.1-2012 Front Cover
3	Title page
6	Notice to users Laws and regulations Copyrights Updating of IEEE documents Errata Patents
7	Important notice Important Notice
8	Participants Participants
10	IEEE Introduction IEEE Introduction
11	IEC/TR 61000-3-7
12	CONTENTS
15	FOREWORD
17	INTRODUCTION
18	ACKNOWLEDGMENT
19	1 Scope
20	2 Normative references 3 Terms and definitions
23	4 Basic EMC concepts related to voltage fluctuations
24	4.1 Compatibility levels 4.2 Planning levels Tables Table 1 – Compatibility levels for flicker in low voltage systems reproduced from IEC 61000-2-2
25	Table 2 – Indicative values of planning levels for flicker in MV, HV and EHV power systems
26	4.3 Illustration of EMC concepts
27	4.4 Emission levels Figures Figure 1 – Illustration of basic voltage quality concepts with time/ location statistics covering the whole system Figure 2 – Illustration of basic voltage quality concepts with time statistics relevant to one site within the whole system
28	5 General principles 5.1 Stage 1: simplified evaluation of disturbance emission 5.2 Stage 2: emission limits relative to actual system characteristics
29	5.3 Stage 3: acceptance of higher emission levels on a conditional basis 5.4 Responsibilities 6 General guidelines for the assessment of emission levels 6.1 Point of evaluation
30	6.2 Definition of flicker emission level 6.3 Assessment of flicker emission levels
31	6.4 Declared system short circuit power or impedance 6.5 General guidelines for assessing the declared system impedance 7 General summation law
32	8 Emission limits for fluctuating installations connected to MV systems 8.1 Stage 1: simplified evaluation of disturbance emission Table 3 – Stage 1 limits for the relative changes in power as a function of the number of changes per minute
33	8.2 Stage 2: emission limits relative to actual system characteristics Figure 3 – Example of a system for sharing global contributions at MV
35	8.3 Stage 3: acceptance of higher emission levels on a conditional basis Table 4 – Minimum emission limits at MV
36	8.4 Summary diagram of the evaluation procedure
37	Figure 4 – Diagram of evaluation procedure
38	9 Emission limits for fluctuating installations connected to HV or EHV systems 9.1 Stage 1: simplified evaluation of disturbance emission 9.2 Stage 2: emission limits relative to actual system characteristics Figure 5 – Determination of St for a simple HV or EHV system
39	Figure 6 – Determination of St for a meshed HV or EHV system
40	9.3 Stage 3: acceptance of higher emission levels on a conditional basis Table 5 – Minimum emission limits at HV-EHV
41	10 Rapid voltage changes 10.1 General considerations Figure 7 – Equivalent circuit and vector diagram for simple assessments Figure 8 – Example rapid voltage change associated with motor starting
42	10.2 Compatibility level 10.3 Planning levels Figure 9 – Example rapid voltage change associated with capacitor switching
43	10.4 Emission limits 10.5 Assessment procedure for evaluation against planning levels & emission limits Table 6 – Indicative planning levels for rapid voltage changes as a function of the number of such changes in a given period
44	Annex A (informative) Pst = 1 curves and numerical data for 230 V and 120 V applications Figure A.1 – Pst = 1 curve for regular rectangular voltage changes [13] Table A.1 – Input relative voltage fluctuation (V/V for Pst=1,0 at output [13]
46	Annex B (informative) Guidelines on the assessment of flicker transfer coefficient Table B.1 – Example of flicker transfer coefficients
47	Annex C (informative) Example of reallocation of global contributions and planning levels considering transfer coefficients
49	Annex D (informative) The use of the severity indicators Ast and Alt to simplify calculations Table D.1 – Compatibility levels for Ast and Alt in LV and MV power systems Table D.2 – Indicative values of planning levels for Ast and Alt in MV, HV and EHV power systems
50	Annex E (informative) Pre-connection and post-connection assessment of emission for Pst
51	Figure E.1 – Shape factor curve for pulse and ramp changes
52	Figure E.2 – Shape factor curves for double-step and double-ramp changes Figure E.3 – Shape factor curves for sinusoidal and triangular changes
53	Figure E.4 – Shape factor curves for aperiodic changes
55	Figure E.5 – Accounting for network loading
57	Figure E.6 – System for flicker emission assessment
58	Figure E.7 – Assessment of emission level using current measurements
59	Annex F (informative) Addition of Pst from different busbars Figure F.1 – Example of two loads fed from different busbars
61	Annex G (informative) Examples of case studies Figure G.1 – Example of effect from a rolling mill
63	Figure G.2 – Example of effect of multiple spot welder load
66	Table G.1 – Flicker measurements for example G.3, flicker effects, normal operation
67	Figure G.3 – Example profile of winder reactive power levels
68	Figure G.4 – Normal system configuration
69	Figure G.5 – Busbars coupled
70	Figure G.6 – “n-1” system configuration
71	Figure G.7 – Operation without SVC
72	Annex H (informative) List of symbols and subscripts
74	Bibliography

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Standard Title	IEEE Guide–Adoption of IEC/TR 61000-3-7:2008, Electromagnetic compatibility (EMC)–Limits–Assessment of emission limits for the connection of fluctuating installations to MV, HV and EHV power systems
Published Code	IEEE
Publication Date	2012
Pages Count	78

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