1、 ETSI ES 203 474 V1.1.1 (2018-03) Environmental Engineering (EE); Interfacing of renewable energy or distributed power sources to 400 VDC distribution systems powering Information and Communication Technology (ICT) equipment ETSI STANDARD ETSI ETSI ES 203 474 V1.1.1 (2018-03) 2 Reference DES/EE-0252
2、 Keywords power supply, renewable ETSI 650 Route des Lucioles F-06921 Sophia Antipolis Cedex - FRANCE Tel.: +33 4 92 94 42 00 Fax: +33 4 93 65 47 16 Siret N 348 623 562 00017 - NAF 742 C Association but non lucratif enregistre la Sous-Prfecture de Grasse (06) N 7803/88 Important notice The present d
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7、odified without the written authorization of ETSI. The copyright and the foregoing restriction extend to reproduction in all media. ETSI 2018. All rights reserved. DECTTM, PLUGTESTSTM, UMTSTMand the ETSI logo are trademarks of ETSI registered for the benefit of its Members. 3GPPTM and LTETMare trade
8、marks of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners. oneM2M logo is protected for the benefit of its Members. GSMand the GSM logo are trademarks registered and owned by the GSM Association. ETSI ETSI ES 203 474 V1.1.1 (2018-03) 3 Contents Intellectual Prop
9、erty Rights 5g3Foreword . 5g3Modal verbs terminology 5g3Introduction 5g31 Scope 7g32 References 7g32.1 Normative references . 7g32.2 Informative references 8g33 Definitions and abbreviations . 9g33.1 Definitions 9g33.2 Abbreviations . 10g34 Architecture of up to 400 VDC power with REN coupling . 10g
10、34.1 Overview 10g34.2 Local and distant Renewable Energy coupling architecture to sites with up to 400 VDC . 11g35 Conditions required to keep specified performance for the up to 400 V power system 13g35.1 General introduction . 13g35.2 Electrical Stability 13g35.2.1 General consideration on REN pow
11、er injection 13g35.2.2 DC injection of locally generated REN power . 14g35.2.3 AC injection of REN power 14g35.3 Reliability, Maintainability, Safety 14g35.4 Proper battery charge and management 15g35.4.1 DC injection of REN power 15g35.4.2 AC injection of REN power 16g35.4.3 EMC, transient voltage
12、and current surge limitation 16g35.4.4 Protection of distribution cables and protection coordination 16g36 Control-monitoring and metering . 17g37 Assessment of performances improvement of up to 400 VDC systems with REN power 17g37.1 Reliability, efficiency performance assessment . 17g37.2 Operation
13、al KPI of REN coupling to sites with up to 400 VDC systems 17g3Annex A (informative): Different possible coupling architectures of REN energy to AC and DC site powering systems or to nano or micro grid . 18g3A.0 General view 18g3A.1 Interconnection of REN on single AC site input 18g3A.2 Interconnect
14、ion of REN on single and multiple DC distribution . 19g3A.3 Interconnection of REN on single or multiple AC distribution frame . 20g3A.4 Hybrid interconnection of REN on AC and DC distribution . 22g3A.5 Interconnection of REN to DC nano or micro grid 23g3Annex B (informative): Details on coupling so
15、lution of REN generator to an up to 400 VDC system 25g3Annex C (informative): Control/Monitoring consideration for Renewable Energy system connexion to AC and DC points in DC systems 26g3Annex D (informative): General consideration for sizing and power coupling of REN system to up to 400 VDC systems
16、 28g3ETSI ETSI ES 203 474 V1.1.1 (2018-03) 4 D.1 General conditions impacting on the REN sizing and power coupling 28g3D.2 Monosource system 28g3D.3 Multisources management and balance between power sources and backup batteries 29g3History 30g3ETSI ETSI ES 203 474 V1.1.1 (2018-03) 5 Intellectual Pro
17、perty Rights Essential patents IPRs essential or potentially essential to normative deliverables may have been declared to ETSI. The information pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found in ETSI SR 000 314: “Intellectual Prop
18、erty Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in respect of ETSI standards“, which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web server (https:/ipr.etsi.org/). Pursuant to the ETSI IPR Policy, no investigation, including IPR sea
19、rches, has been carried out by ETSI. No guarantee can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web server) which are, or may be, or may become, essential to the present document. Trademarks The present document may include trademarks an
20、d/or tradenames which are asserted and/or registered by their owners. ETSI claims no ownership of these except for any which are indicated as being the property of ETSI, and conveys no right to use or reproduce any trademark and/or tradename. Mention of those trademarks in the present document does
21、not constitute an endorsement by ETSI of products, services or organizations associated with those trademarks. Foreword This ETSI Standard (ES) has been produced by ETSI Technical Committee Environmental Engineering (EE). The up to 400 VDC power solutions feeding the power interface to ICT equipment
22、 as defined by ITU-T (Recommendation ITU-T L.1200 series 1, 2, 3, i.1, i.3) and ETSI 8, are well adapted to straight forward use of renewable energy or distributed power sources through new simple DC nano or micro grids. This series defines the coupling of local or remote renewable energy into an up
23、 to 400 VDC power system without reducing DC performances defined in Recommendation ITU-T L.1202 2 mainly for efficiency and reliability. The main advantages are saving of fossil fuel (as a source of primary energy consumption), reduction of GHG emission and increase of resilience. Additional site i
24、nterconnection by DC grid can even bring more optimization. One other big benefit is that compared to AC, on 400 VDC there is no synchronization required between the various inputs, which keeps the architecture simple. Modal verbs terminology In the present document “shall“, “shall not“, “should“, “
25、should not“, “may“, “need not“, “will“, “will not“, “can“ and “cannot“ are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of provisions). “must“ and “must not“ are NOT allowed in ETSI deliverables except when used in direct citation. Introduc
26、tion The up to 400 VDC power feeding solution for ICT sites (datacenters, telecom centers) and other building using the up to 400 VDC power interface Recommendation ITU-T L.1200 1, are well adapted to straightforward use of renewable energy or distributed power sources through new DC nano or micro g
27、rid, most of them being more complex in AC than in DC. The DC would allow great simplification by avoiding frequency and phase synchronization of AC generators or inverters. ETSI ETSI ES 203 474 V1.1.1 (2018-03) 6 The present document aims at defining interface and architecture for injecting renewab
28、le energy into an up to 400 VDC power system in charge of providing power to ICT and facilities equipment with an interface compliant to Recommendation ITU-T L.1200 1, and with a DC power architecture as defined in Recommendation ITU-T L.1204 i.3, without reducing DC performances defined in Recommen
29、dation ITU-T L.1202 2 mainly for efficiency and reliability. The addition of local renewable energy will reduce energy consumption from the public utility, and possibly fossil primary energy consumption and the corresponding high GHG emission. It can also provide more resilience in case of public el
30、ectric grid interruption. In addition, energy exchange is simple with distributed green power sources e.g. photovoltaic, wind power, fuel cell (FC) or engine generator using green fuel through a DC nano or micro grids at the level of a multi-building site or between different sites. These sites can
31、be any type of ICT sites such as network access or nodes, data-centers, customer premises including IoT devices, etc.). Such an inter-buildings or sites power interconnection is called “site grid“ by opposition to public electric utility. These DC energy exchanges through site grid can bring higher
32、level of optimization such as: exploit green-energy sources more efficiently by optimal location of renewable energy generator (e.g. for wind system in windy places and for PV system, in places out of shadow); complement local back-up power system e.g. battery; share local renewable energy excess of
33、 one site with other sites; ensure remote powering of distributed ICT site in the neighbourhood (e.g. by dedicated remote DC power cables or hybrid optical and DC power cables). Injection of the renewable energy into the legacy AC public utility should consider the use of electricity for ICT service
34、s, and avoids undetermined use in the neighbourhood that can be inefficient. Key performance indicators could be used for reducing inconsidered use by accounting for efficient use of renewable energy on one ICT site or interconnected sites through a nano grid. Many documents provided in bibliography
35、 are elaborating on the benefit and the need of coupling REN energy to local installation or to nano grid i.7, i.14 to ICT installation and the advantages of doing it in DC i.8, i.9, i.10, i.11, i.12. LCA approach is more detailed in i.13. The present document was developed jointly by ETSI TC EE and
36、 ITU-T Study Group 5 and published respectively by ITU and ETSI as Recommendation ITU-T L.1205 i.1 and ETSI ES 203 474 (the present document), which are technically equivalent. ETSI ETSI ES 203 474 V1.1.1 (2018-03) 7 1 Scope The present document defines interconnection of site power installation fee
37、ding up to 400 VDC interface, to site renewable energy or to distributed DC power. The covered aspects are: general power architectures for: - connection of a site renewable energy source (PV, wind generator, fuel cells, etc.) to a site power plant and especially the DC power system, (the site sourc
38、es being on the buildings or around); - exchange of power to and from a DC nano or micro grid for use and production out of the site (this includes dedicated remote powering network built for ICT access equipment but also more general purpose DC electric grids); - conditions required to keep specifi
39、ed performance for the up to 400V power system: square4 electrical stability; square4 reliability and maintainability; square4 proper battery charge and management; square4 lightning protection coordination; square4 EMC and transient limits; - specification of proper power sizing, Requirement for co
40、ntrol-monitoring and power metering; - assessment of performances (AC grid energy saving, reliability, flexibility, environmental impact, etc.). The present document does not cover: renewable energy dimensioning; power injection into the legacy AC utilities which is already covered by many standards
41、 (e.g. from IEC); some of the smart power management possibilities through exchanges with DC nano or micro grid. 2 References 2.1 Normative references References are either specific (identified by date of publication and/or edition number or version number) or non-specific. For specific references,
42、only the cited version applies. For non-specific references, the latest version of the referenced document (including any amendments) applies. Referenced documents which are not found to be publicly available in the expected location might be found at https:/docbox.etsi.org/Reference/. NOTE: While a
43、ny hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee their long term validity. The following referenced documents are necessary for the application of the present document. 1 Recommendation ITU-T L.1200 (2012): “Direct current power feeding interface up
44、to 400 V at the input to telecommunication and ICT equipment“. 2 Recommendation ITU-T L.1202 (2015): “Methodologies for evaluating the performance of up to 400 VDC power feeding system and its environmental impact“. 3 Recommendation ITU-T L.1203 (2016): “Colour and marking identification of up to 40
45、0 VDC power distribution for information and communication technology systems“. ETSI ETSI ES 203 474 V1.1.1 (2018-03) 8 4 ETSI EN 301 605 (V1.1.1): “Environmental Engineering (EE); Earthing and bonding of 400 VDC data and telecom (ICT) equipment“. 5 ETSI ES 202 336 (all parts): “Environmental Engine
46、ering (EE); Monitoring and Control Interface for Infrastructure Equipment (Power, Cooling and Building Environment Systems used in Telecommunication Networks)“. 6 IEC 60364 series: “Low-voltage electrical installations“. NOTE: Available at https:/webstore.iec.ch/searchform Colour and marking of DC c
47、able and connecting devices“. 2.2 Informative references References are either specific (identified by date of publication and/or edition number or version number) or non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the referen
48、ced document (including any amendments) applies. NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee their long term validity. The following referenced documents are not necessary for the application of the present document but they assist
49、the user with regard to a particular subject area. i.1 Recommendation ITU-T L.1205 (October 2016): “Interfacing of renewable energy or distributed power sources to up to 400 VDC power feeding systems“. i.2 ETSI EN 302 099 (V2.1.1): “Environmental Engineering (EE); Powering of equipment in access network“. i.3 Recommendation ITU-T L.1204 (2016): “Extended architecture of power feeding systems of up to 400 VDC“. i.4 Recommendation ITU-T L.1302 (2015): “Assessment of energy efficiency on infrastructure i
