ITU-T L 1325-2016 Green ICT solutions for telecom network facilities (Study Group 5).pdf
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1、 I n t e r n a t i o n a l T e l e c o m m u n i c a t i o n U n i o n ITU-T L.1325 TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU (12/2016) SERIES L: ENVIRONMENT AND ICTS, CLIMATE CHANGE, E-WASTE, ENERGY EFFICIENCY; CONSTRUCTION, INSTALLATION AND PROTECTION OF CABLES AND OTHER ELEMENTS OF OUTSIDE
2、PLANT Green ICT solutions for telecom network facilities Recommendation ITU-T L.1325 ITU-T L-SERIES RECOMMENDATIONS ENVIRONMENT AND ICTS, CLIMATE CHANGE, E-WASTE, ENERGY EFFICIENCY; CONSTRUCTION, INSTALLATION AND PROTECTION OF CABLES AND OTHER ELEMENTS OF OUTSIDE PLANT OPTICAL FIBRE CABLES Cable str
3、ucture and characteristics L.100L.124 Cable evaluation L.125L.149 Guidance and installation technique L.150L.199 OPTICAL INFRASTRUCTURES Infrastructure including node element (except cables) L.200L.249 General aspects and network design L.250L.299 MAINTENANCE AND OPERATION Optical fibre cable mainte
4、nance L.300L.329 Infrastructure maintenance L.330L.349 Operation support and infrastructure management L.350L.379 Disaster management L.380L.399 PASSIVE OPTICAL DEVICES L.400L.429 MARINIZED TERRESTRIAL CABLES L.430L.449 For further details, please refer to the list of ITU-T Recommendations. Rec. ITU
5、-T L.1325 (12/2016) i Recommendation ITU-T L.1325 Green ICT solutions for telecom network facilities Summary Recommendation ITU-T L.1325 has been developed to introduce highly-efficient infrastructure solutions, including highly-efficient power solutions, renewable energy solutions, air conditioning
6、 energy-saving solutions and free and economical cooling solutions. Not every solution mentioned in this Recommendation is fit for everywhere. When operators choose the solution, it should be selected according to local situations. With the development of information and communication technologies,
7、and especially high power-density equipment, the energy consumption of communication industry is increasing. Therefore, we must pay attention to energy conservation, and protection of the environment. This Recommendation specifies Green ICT solutions for telecom network facilities. History Edition R
8、ecommendation Approval Study Group Unique ID* 1.0 ITU-T L.1325 2016-12-14 5 11.1002/1000/13146 Keywords Energy efficiency, green solutions, ICT, telecom network. * To access the Recommendation, type the URL http:/handle.itu.int/ in the address field of your web browser, followed by the Recommendatio
9、ns unique ID. For example, http:/handle.itu.int/11.1002/1000/11830-en. ii Rec. ITU-T L.1325 (12/2016) FOREWORD The International Telecommunication Union (ITU) is the United Nations specialized agency in the field of telecommunications, information and communication technologies (ICTs). The ITU Telec
10、ommunication Standardization Sector (ITU-T) is a permanent organ of ITU. ITU-T is responsible for studying technical, operating and tariff questions and issuing Recommendations on them with a view to standardizing telecommunications on a worldwide basis. The World Telecommunication Standardization A
11、ssembly (WTSA), which meets every four years, establishes the topics for study by the ITU-T study groups which, in turn, produce Recommendations on these topics. The approval of ITU-T Recommendations is covered by the procedure laid down in WTSA Resolution 1. In some areas of information technology
12、which fall within ITU-Ts purview, the necessary standards are prepared on a collaborative basis with ISO and IEC. NOTE In this Recommendation, the expression “Administration“ is used for conciseness to indicate both a telecommunication administration and a recognized operating agency. Compliance wit
13、h this Recommendation is voluntary. However, the Recommendation may contain certain mandatory provisions (to ensure, e.g., interoperability or applicability) and compliance with the Recommendation is achieved when all of these mandatory provisions are met. The words “shall“ or some other obligatory
14、language such as “must“ and the negative equivalents are used to express requirements. The use of such words does not suggest that compliance with the Recommendation is required of any party. INTELLECTUAL PROPERTY RIGHTSITU draws attention to the possibility that the practice or implementation of th
15、is Recommendation may involve the use of a claimed Intellectual Property Right. ITU takes no position concerning the evidence, validity or applicability of claimed Intellectual Property Rights, whether asserted by ITU members or others outside of the Recommendation development process. As of the dat
16、e of approval of this Recommendation, ITU had not received notice of intellectual property, protected by patents, which may be required to implement this Recommendation. However, implementers are cautioned that this may not represent the latest information and are therefore strongly urged to consult
17、 the TSB patent database at http:/www.itu.int/ITU-T/ipr/. ITU 2017 All rights reserved. No part of this publication may be reproduced, by any means whatsoever, without the prior written permission of ITU. Rec. ITU-T L.1325 (12/2016) iii Table of Contents Page 1 Scope . 1 2 References . 1 3 Definitio
18、ns 1 3.1 Terms defined elsewhere 1 3.2 Terms defined in this Recommendation . 2 4 Abbreviations and acronyms 2 5 Conventions 2 6 General requirements of green solutions 2 7 High efficiency power-feeding solutions 2 7.1 High-frequency switching rectifier sleeping mode solution 2 7.2 HVDC power feedin
19、g solution . 3 7.3 Hybrid power feeding solution with up to 400 VDC and AC power feeding system 3 7.4 Parallel active power filter solution 4 7.5 High temperature lead acid battery solution . 4 8 Renewable energy power supply solutions . 4 8.1 Solar power solution . 4 8.2 Wind power solution 5 8.3 F
20、uel cell power solution . 5 9 Air conditioning power-saving solutions 6 9.1 Refrigerant pump power-saving solutions 6 9.2 Adaptive control of air conditioning power-saving solution 6 9.3 Central air conditioning inverter solution . 7 10 Free and economical cooling solutions . 7 10.1 Outdoor fresh ai
21、r cooling solution 7 10.2 Heat exchange cooling solution 7 10.3 Heat pipe solution . 7 10.4 Wet film solution 8 10.5 Cooling tower free-cooling solution . 8 Bibliography. 10 Rec. ITU-T L.1325 (12/2016) 1 Recommendation ITU-T L.1325 Green ICT solutions for telecom network facilities 1 Scope This Reco
22、mmendation specifies Green ICT solutions for telecom network facilities and aims to increase the energy efficiency of the whole telecom network and to reduce carbon emissions. ICT infrastructure can be defined as a repository for the telecom equipment, management system, power system and cooling sys
23、tem. It is designed for maximum energy efficiency and minimum environmental impact. The construction and operation of telecom network infrastructures includes advanced technologies and strategies. This Recommendation provides a set of rules to be referred to when undertaking improvement of existing
24、telecom network infrastructure, or when planning, designing or constructing new ones. 2 References The following ITU-T Recommendations and other references contain provisions which, through reference in this text, constitute provisions of this Recommendation. At the time of publication, the editions
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