IEEE 367 2012

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IEEE Recommended Practice for Determining the Electric Power Station Ground Potential Rise and Induced Voltage from a Power Fault

Published By	Publication Date	Number of Pages
IEEE	2012	168

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Description

Revision Standard – Active. Guidance for the calculation of power station ground potential rise (GPR) and longitudinal induction (LI) voltages is provided, as well as guidance for their appropriate reduction from worst-case values, for use in metallic telecommunication protection design.

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PDF Pages	PDF Title
1	IEEE Std 367-2012 Front cover
3	Title page
6	Notice to users Laws and regulations Copyrights Updating of IEEE documents Errata Patents
8	Participants
10	Introduction
11	Contents
13	Important notice 1. Overview 1.1 Scope
14	2. Normative references 3. Definitions, acronyms, and abbreviations 3.1 Definitions
16	3.2 Acronyms and abbreviations
17	4. Overview of technical considerations 4.1 Telecommunication facilities
18	4.2 Faults on power systems 4.3 Power station ground grid impedance to remote earth
21	4.4 Establishing net fault current values 4.5 Division of fault current 4.6 Calculating the inducing current
22	4.7 Ground potential rise 4.8 Sources of fault and inducing current information and impedance to remote earth information and related responsibilities of power utilities and serving telecommunication utilities
23	4.9 Transient voltages resulting from power system operation 4.10 Types of wire-line telecommunication circuits usually requested for electric power stations as defined by some power utilities 4.11 Service types and performance objectives for telecommunication services provided at power stations as defined in IEEE Std 487
24	5. Electrical power station GPR 5.1 Determination of appropriate symmetrical and asymmetrical GPR
40	5.2 Duration of the fault and its relationship to wire-line telecommunication requirements for power system protection
41	5.3 Extraordinary possibilities
42	5.4 Example of a GPR calculation and volt-time area calculation 5.5 Summary
43	5.6 Multigrounded neutral impedance in rural areas
45	5.7 GPR calculations for distributed generation
47	6. Calculation of electromagnetic induction under power fault conditions
48	6.1 Inducing current 6.2 Mutual impedance
51	6.3 General equation
55	6.4 Examples of calculations 6.5 Cumulative mutual impedance and electromagnetic induction curves 6.6 Correction for difference in line heights
56	6.7 Electric supply line with double-end feed 6.8 Fault location for maximum induced voltage
57	6.9 Shield factor
61	6.10 Typical supply line fault current distribution
63	7. Vectorial summation of a GPR with an LI voltage 7.1 Calculating the resultant voltage 8. Power system fault current probability 8.1 Probability analysis
64	9. ZOI of GPR 9.1 Conductive interference
65	9.2 Equipotential lines
71	9.3 Potential contour surveys
73	9.4 Effects of GPR within the ZOI 9.5 Transfer of a GPR
74	9.6 Determining the magnitude of the GPR in the vicinity of an electric power station or transmission line tower
76	9.7 Cases
83	9.8 Determination of the boundary of the ZOI
87	9.9 Safety considerations
89	10. Summary of mitigating and reduction factors applicable to GPR or induced voltage, or both 10.1 Mitigating factors applicable to fault current calculation
90	10.2 Mitigating factors applicable to GPR calculations
91	10.3 Reduction or multiplication design factors to be used with calculated GPR 10.4 Treating soil to lower impedance
92	11. Communication channel time requirements 11.1 Power system fault protection
93	11.2 Protective relay types
94	11.3 Communication systems factors
95	11.4 Relaying schemes
98	12. Administrative guidelines for coordination between communication and power utilities 12.1 Acquiring data on substation electrical environments
99	12.2 Studies of substation electrical environment
100	Annex A (informative) Bibliography
105	Annex B (informative) Example of calculations for HV bus fault and LV bus and line fault B.1 Example 1: HV bus fault and LV bus and line fault calculations
110	B.2 Example 2: HV line fault calculations
115	Annex C (informative) Example of a GPR calculation and volt-time area calculation C.1 Example of a GPR calculation and volt-time area calculation
130	Annex D (informative) Example of calculations for uniform and nonuniform exposures D.1 Examples of calculations D.2 Example 1: Uniform exposure
139	D.3 Example 2: Nonuniform exposure
145	Annex E (informative) Example of calculations for double-ended supply feed and a telecommunication line E.1 Example: Double-ended supply feed
149	Annex F (informative) Examples of calculating the resultant voltage between the electric power station ground grid and a conductor that is grounded at a remote location, such as a telephone central office F.1 Calculating the resultant voltage
154	Annex G (informative) Modeling transfer of ground potential rise G.1 Transfer of GPR G.2 Description of the model of the system
157	G.3 Calculation results for the impedance of the grounding system modeled
158	G.4 Calculation results for transferred voltages on the skywire and the neutrals
159	G.5 Zone of influence of the installation
161	G.6 Transferred voltages on a buried conductor
164	G.7 Combined effects of conductive and inductive coupling on buried conductors
165	Annex H (informative) Sample GPR calculations H.1 Calculation of GPR

Additional information

Standard Title	IEEE Recommended Practice for Determining the Electric Power Station Ground Potential Rise and Induced Voltage from a Power Fault
Published Code	IEEE
Publication Date	2012
Pages Count	168

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