1、 IEC TS 62898-1 Edition 1.0 2017-05 TECHNICAL SPECIFICATION Microgrids Part 1: Guidelines for microgrid projects planning and specification IEC TS 62898-1:2017-05(en) colour inside THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2017 IEC, Geneva, Switzerland All rights reserved. Unless otherwise s
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10、 you wish to give us your feedback on this publication or need further assistance, please contact the Customer Service Centre: csciec.ch. IEC TS 62898-1 Edition 1.0 2017-05 TECHNICAL SPECIFICATION Microgrids Part 1: Guidelines for microgrid projects planning and specification INTERNATIONAL ELECTROTE
11、CHNICAL COMMISSION ICS 29.240.01 ISBN 978-2-8322-4360-2 Registered trademark of the International Electrotechnical Commission Warning! Make sure that you obtained this publication from an authorized distributor. colour inside 2 IEC TS 62898-1:2017 IEC 2017 CONTENTS FOREWORD . 5 INTRODUCTION . 7 1 Sc
12、ope 8 2 Normative references 8 3 Terms and definitions 8 4 General principles . 13 4.1 General . 13 4.2 Preliminary study 14 4.3 Overall microgrid planning and design process . 14 5 Purpose and application of microgrids . 15 5.1 Application classification . 15 5.2 Application of non-isolated microgr
13、ids . 15 5.3 Application of isolated microgrids 15 6 Resource analysis and generation forecast 16 6.1 Resource analysis. 16 6.1.1 General . 16 6.1.2 Non-dispatchable resource analysis 16 6.1.3 Dispatchable resource analysis . 17 6.2 Generation forecast 17 6.2.1 General . 17 6.2.2 Technical requireme
14、nts . 17 6.2.3 Data processing . 18 7 Load forecast 18 7.1 General . 18 7.2 Load analysis 18 7.3 Classification of load forecast . 19 7.4 Technical requirements . 19 8 Distributed energy resource planning . 20 8.1 Ratio of renewable energy 20 8.2 Renewable generation configuration . 20 8.3 Energy st
15、orage . 20 8.4 Electric power and energy balancing . 20 8.5 Dispatchable generation configuration 20 9 Microgrid power system planning . 21 9.1 Voltage level . 21 9.2 Typical topology of a microgrid . 21 9.2.1 Typical topology for a non-isolated microgrid . 21 9.2.2 Typical topology for an isolated
16、microgrid 23 9.3 Electrical parameter calculations. 23 10 Technical requirements for DER in microgrids . 23 10.1 General . 23 10.2 Technical requirements for DER in grid-connected mode 24 10.3 Technical requirements for DER in isolated microgrids and island mode of non-isolated microgrids . 24 11 Te
17、chnical requirements for distribution lines in microgrids . 24 12 Technical requirements for microgrid connection to distribution networks 24 IEC TS 62898-1:2017 IEC 2017 3 12.1 General . 24 12.2 Interface protection . 24 12.3 Microgrid earthing . 25 12.3.1 General . 25 12.3.2 Technical requirements
18、 for microgrid earthing . 25 12.4 Power quality at POC 25 12.4.1 General . 25 12.4.2 Power quality monitoring . 25 13 Technical requirements for control, protection and communication systems . 26 13.1 Microgrid control . 26 13.1.1 General . 26 13.1.2 Control scheme . 26 13.2 Protection relays and au
19、tomatic protection devices . 26 13.2.1 General . 26 13.2.2 DER component protection 27 13.2.3 Component protection for all users in a microgrid 27 13.2.4 Load shedding in a microgrid . 27 13.3 Microgrid communication 27 13.3.1 Communication within microgrid subsystem . 27 13.3.2 Microgrid communicat
20、ion with connected distribution system . 27 13.4 Information exchange 27 14 Evaluation of microgrid projects . 28 14.1 General . 28 14.2 Reliability of power supply 28 14.3 Economic benefits. 28 14.4 Environmental benefits . 28 14.5 Scalability . 28 14.6 Integration to the wider electric power syste
21、m . 28 (informative) Business use case A Guarantee a continuity in load service by Annex A islanding with microgrids . 29 A.1 General . 29 A.2 Purpose 29 A.3 Objectives . 29 (informative) Business use case B Optimize local resources to provide Annex B services to customers inside the microgrid . 30
22、B.1 General . 30 B.2 Purpose 30 B.3 Objectives . 30 (informative) Business use case C Electrify remote areas using renewable Annex C energy sources 31 C.1 General . 31 C.2 Purpose 31 C.3 Objectives . 31 C.4 Basic functions . 31 C.5 Advanced functions . 31 (informative) Business use case D Optimize l
23、ocal resources to provide Annex D services to the grid/disaster preparedness 32 D.1 General . 32 D.2 Scope . 32 4 IEC TS 62898-1:2017 IEC 2017 D.3 Objectives . 32 D.4 Basic functions . 32 D.5 Advanced functions . 32 Bibliography 33 Figure 1 Overall microgrid planning and design process 14 Figure 2 S
24、ingle bus structure microgrid 21 Figure 3 Multiple bus structure microgrid . 22 Figure 4 Multilevel structure microgrid . 22 Figure 5 Typical topology for an isolated microgrid 23 IEC TS 62898-1:2017 IEC 2017 5 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ MICROGRIDS Part 1: Guidelines for microgrid p
25、rojects planning and specification FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international co-operation on all question
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35、) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent rights. IEC shall not be held responsible for identifying any or all such patent rights. The main task of IEC technical committees is to prepare International Standards. In exceptio
36、nal circumstances, a technical committee may propose the publication of a technical specification when the required support cannot be obtained for the publication of an International Standard, despite repeated efforts, or the subject is still under technical development or where, for any other reaso
37、n, there is the future but no immediate possibility of an agreement on an International Standard. Technical specifications are subject to review within three years of publication to decide whether they can be transformed into International Standards. IEC TS 62898, which is a Technical Specification,
38、 has been prepared by IEC technical committee 8: Systems aspects for electrical energy supply. 6 IEC TS 62898-1:2017 IEC 2017 The text of this Technical Specification is based on the following documents: Enquiry draft Report on voting 8/1445/DTS 8/1460/RVDTS Full information on the voting for the ap
39、proval of this technical specification can be found in the report on voting indicated in the above table. This document has been drafted in accordance with the ISO/IEC Directives, Part 2. A list of all parts in the IEC 62898 series, published under the general title Microgrids, can be found on the I
40、EC website. The committee has decided that the contents of this document will remain unchanged until the stability date indicated on the IEC website under “http:/webstore.iec.ch“ in the data related to the specific document. At this date, the document will be reconfirmed, withdrawn, replaced by a re
41、vised edition, or amended. A bilingual version of this publication may be issued at a later date. IMPORTANT The colour inside logo on the cover page of this publication indicates that it contains colours which are considered to be useful for the correct understanding of its contents. Users should th
42、erefore print this document using a colour printer. IEC TS 62898-1:2017 IEC 2017 7 INTRODUCTION Microgrids can serve different purposes depending on the primary objectives of their applications. They are usually seen as means to manage reliability of supply in a grid contingency and local optimizati
43、on of energy supply by controlling distributed energy resources (DER). Microgrids also present a way to provide electricity supply in remote areas and to use clean and renewable energy as a systemic approach for rural electrification. This part of IEC 62898 defines the guidelines for the general pla
44、nning and design of microgrids, and IEC TS 62898-2 1defines the general technical requirements for operation and control of microgrids. This document mainly covers the following issues: determination of microgrid purpose and application; preliminary study used for microgrid planning, including resou
45、rce analysis, load forecast, DER planning and microgrid power system planning; principles of microgrid technical requirements that should be specified during planning stage; microgrid evaluation to select an optimal planning scheme for a microgrid project. IEC TS 62898-2 mainly covers the following
46、issues: operation requirements and control targets of microgrids under different operation modes; basic control strategies and methods under different operation modes; requirements of energy storage, monitoring and communication under different operation modes; power quality. Microgrids can be stand
47、-alone or be a sub-system of the smart grid. The technical requirements in this document and in IEC TS 62898-2 are intended to be consistent and in line with: system requirements from IEC System Committee Smart Energy, technical requirements from IEC 62786 for connection of generators intended to be
48、 operated in parallel with the microgrid, basic rules from IEC TC 64 and TC 99 for safety and quality of power distribution (essentially selectivity, through coordination of protective devices) in installations, basic rules from IEC TC 77/SC 77A for electromagnetic compatibility (EMC) issues, IEC TS
49、 62257 (all parts) with respect to rural electrification, IEC TS 62749 with respect to power quality. Local laws and regulations can overrule the requirements of this document. _ 1Under preparation. Stage at the time of publication: IEC CD 62898-2:2017. 8 IEC TS 62898-1:2017 IEC 2017 MICROGRIDS Part 1: Guidelines for microgrid projects planning and specification 1 Scope The purpose of this part of IEC 62898, which is a Technical Specification, is to provid
