IEEE C37.235-2021(Redline)

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IEEE Guide for the Application of Rogowski Coils used for Protective Relaying Purposes (Redline)

Published By	Publication Date	Number of Pages
IEEE	2021

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Description

Revision Standard – Active. Guidance for the use and application of Rogowski coils (RCs) (air-core current sensors) for protective relaying in electric power systems is described and provided in this guide. The selection and application of RCs for the more common protection schemes are also addressed.

PDF Catalog

PDF Pages	PDF Title
1	IEEE Std C37.235™-2021 Front cover
2	Title page
4	Important Notices and Disclaimers Concerning IEEE Standards Documents
8	Participants
10	Introduction
11	Contents
12	List of Figures
14	List of Tables
15	1. Overview 1.1 Scope 1.2 Purpose 1.3 Word usage
16	2. Normative references
17	3. Definitions, acronyms, and abbreviations 3.1 Definitions 3.2 Acronyms and abbreviations 4. Review of conventional current sensor technologies 4.1 Iron-core current transformers
20	4.2 Gapped-core current transformers 4.3 Linear couplers
21	5. Rogowski coil 5.1 Theory of operation
24	5.2 Rogowski coil designs
26	5.3 Performance characteristics
28	5.4 The use of the Rogowski coil signal
32	5.5 Comparison of conventional current transformers to Rogowski coils
35	5.6 Installation considerations
37	5.7 Interface with relays
38	5.8 Applicable Standards
39	5.9 Test
41	5.10 Rules for transport, storage, installation, operation, and maintenance 5.11 Applications for protective relaying
45	Annex A (informative) Bibliography
48	Annex B (informative) IEC 61869-10 Standard highlights B.1 General
49	B.2 Ratio error
50	B.3 Phase offset B.4 Ratio correction for frequency
51	Annex C (informative) Examples of Rogowski coil-based projects C.1 General C.2 Example 1—Metering and control
52	C.3 Example 2—Integrated solutions
53	C.4 Example 3—Power cable protection
54	C.5 Example 4—Hybrid protection schemes C.6 Example 5—Capacitor bank protection schemes
55	C.7 Example 6—Distribution system Smart Grid C.8 Example 7—Distribution gas-insulated switchgear (Ring Main Units)
56	C.9 Example 8—Distribution digital air-insulated switchgear
57	Back cover