1、BSI Standards PublicationBS ISO 18129:2015Condition monitoring anddiagnostics of machines Approaches for performancediagnosisBS ISO 18129:2015 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of ISO 18129:2015.The UK participation in its preparation was entrusted to Te
2、chnicalCommittee GME/21/7, Mechanical vibration, shock and conditionmonitoring - Condition monitoring.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are res
3、ponsible for its correctapplication. The British Standards Institution 2015. Published by BSI StandardsLimited 2015ISBN 978 0 580 81949 0ICS 17.160Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards P
4、olicy and Strategy Committee on 31 May 2015.Amendments issued since publicationDate Text affectedBS ISO 18129:2015 ISO 2015Condition monitoring and diagnostics of machines Approaches for performance diagnosisSurveillance et diagnostic dtat des machines Dmarches pour le diagnostic de performanceINTER
5、NATIONAL STANDARDISO18129First edition2015-04-01Reference numberISO 18129:2015(E)BS ISO 18129:2015ISO 18129:2015(E)ii ISO 2015 All rights reservedCOPYRIGHT PROTECTED DOCUMENT ISO 2015All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise
6、in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below or ISOs member body in the country of the requester.ISO copyright officeCase po
7、stale 56 CH-1211 Geneva 20Tel. + 41 22 749 01 11Fax + 41 22 749 09 47E-mail copyrightiso.orgWeb www.iso.orgPublished in SwitzerlandBS ISO 18129:2015ISO 18129:2015(E)Foreword ivIntroduction v1 Scope . 12 Normative references 13 Terms and definitions . 14 Types of performance monitoring and diagnostic
8、s . 24.1 Basic concepts . 24.2 Online performance monitoring 34.3 Offline performance analysis 34.4 Online performance monitoring with validation 35 Guidance on installation of performance monitoring and diagnostics systems 45.1 Preconditions . 45.2 Planning 45.3 Operation analysis of equipment and
9、definition of output performance parameters 45.4 Definition of operation states . 55.4.1 General 55.4.2 Steady state . 55.4.3 Nominal state 65.4.4 Partial load states 65.5 Adjusting the model 65.6 Testing the performance monitoring . 76 Methods and requirements for carrying out performance monitorin
10、g and diagnostics of machines 86.1 Methodology . 86.2 Plausibility check 86.3 Cycle times and averaging . 86.4 Implemented calculations and input parameters . 86.5 Validation 107 Data interpretation and assessment criteria 10Annex A (informative) Input parameters recommended for describing the opera
11、ting conditions 12Annex B (informative) Measured and expected descriptors recommended for performance monitoring and diagnostics .13Annex C (informative) Example of pump performance monitoring .14Annex D (informative) Example of gas turbine Hydraulic clearance optimization .16Bibliography .17 ISO 20
12、15 All rights reserved iiiContents PageBS ISO 18129:2015ISO 18129:2015(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO tech
13、nical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely
14、 with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria need
15、ed for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).Attention is drawn to the possibility that some of the elements of this document may be the subject of patent r
16、ights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any patent rights identified during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received (see www.iso.org/patents).Any trade name used in t
17、his document is information given for the convenience of users and does not constitute an endorsement.For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the WTO principles in the Technical Barriers
18、to Trade (TBT), see the following URL: Foreword Supplementary information .The committee responsible for this document is ISO/TC 108, Mechanical vibration, shock and condition monitoring, Subcommittee SC 5, Condition monitoring and diagnostics of machines.iv ISO 2015 All rights reservedBS ISO 18129:
19、2015ISO 18129:2015(E)IntroductionChallenged with high energy costs, emission reduction demands, and increasing flexibility demands, ensuring and verifying maximum efficiency of machines and systems has become a constant struggle for owners and operators.Machines, groups of machines or industrial ins
20、tallations (equipment) fulfil their tasks by employing energy conversion or energy transportation processes. The efficiency of these energy conversion and energy transportation processes is the performance of the equipment or related processes. Good performance means high efficiency and low losses.
21、If the energy conversion process includes a thermodynamic process, especially a thermodynamic cycle process, performance monitoring can become very complex.Performance monitoring and diagnostics systems are increasingly implemented for this purpose. These are modern information systems that monitor
22、the processes of machines, groups of machines, or complete industrial installation in order to detect and localize opportunities to improve their efficiency respective performance.The benefits of performance monitoring and diagnostics lie in the provision of information (e.g. measured descriptors an
23、d expected descriptors) regarding the current performance status of the equipment. This information is the basis to avoid non-optimal operating states, degradation processes, and to ensure early detection and quantification of deterioration processes (e.g. erosion, corrosion).Performance monitoring
24、is often used in addition to condition monitoring.Targets of performance monitoring and diagnostics are enhanced quality of energy conversion by achieving optimized operation, emission reduction, quantifying deterioration, recognizing faulty instrumentation, detecting defective equipment, enhanced a
25、vailability of machines, increasing efficiency, thereby reducing energy costs and costs for emissions, and improvement in internal reporting and communication by increased transparency and calculation of well-defined descriptors.Results of performance monitoring and diagnostics are addressed to oper
26、ators to change the operating regime in case of identified not optimal operation, and maintenance staff to repair or modify the machine or equipment in order to eliminate identified faults/deterioration. ISO 2015 All rights reserved vBS ISO 18129:2015BS ISO 18129:2015Condition monitoring and diagnos
27、tics of machines Approaches for performance diagnosis1 ScopeThis International Standard provides an introduction on how to apply performance monitoring and diagnostics for machines, groups of machines, up to complete industrial installation (equipment) typically covering the whole lifetime of the ma
28、chines.This International Standard is intended to introduce the terminology specifically related to performance monitoring and diagnostics of machines, describe the types of performance monitoring and diagnostics procedures and their merits, provide guidance on installation of performance monitoring
29、 and diagnostics systems, outline methods and requirements for carrying out performance monitoring and diagnostics of machines, and provide information on data interpretation, and assessment criteria and reporting requirements.This International Standard includes testing procedures for determining t
30、he accuracy of performance monitoring and diagnostics systems and procedures (including providing inputs for benchmarking the performance of equipment).2 Normative referencesThe following documents, in whole or in part, are normatively referenced in this document and are indispensable for its applic
31、ation. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO 13372, Condition monitoring and diagnostics of machines VocabularyISO 13379-1, Condition monitoring and diagnostics of machines Da
32、ta interpretation and diagnostics techniques Part 1: General guidelinesISO 17359, Condition monitoring and diagnostics of machines General guidelines3 Terms and definitionsFor the purposes of this document, the terms and definitions given in ISO 13372, ISO 13379-1, ISO 17359, and the following apply
33、.3.1performancebehaviour, characteristics and efficiency of a technological process, running in a machine derived by measurement and calculation of one or more parameters, for example, power, flow, efficiency or speed, which singly or together provide the necessary informationSOURCE: ISO 13372:2012,
34、 2.3Note 1 to entry: Performance is used to qualify energy conversion processes with mostly thermodynamic process parts included.INTERNATIONAL STANDARD ISO 18129:2015(E) ISO 2015 All rights reserved 1BS ISO 18129:2015ISO 18129:2015(E)Note 2 to entry: According to ISO 13372 machines, group of machine
35、s and complete industrial installations are referred to as equipment.3.2thermodynamic processenergy conversion process where thermal energy is involved as a major energy form3.3steady stateoperating condition whereby the value of the described signal does not vary significantly with timeNote 1 to en
36、try: A process is regarded as steady-state when characteristic parameters are steady-state.3.4descriptorfeaturedata item derived from raw or processed parameters or external observationSOURCE: ISO 13372:2012, 6.23.5measured descriptorsignal obtained directly from the monitored equipment as measured
37、value or processed directly from measured values, which is relevant for performance3.6expected descriptorcorresponding value to a measured descriptor that is obtained from a model, where the model describes the expected performance of the equipment3.7performance factorratio between actual value and
38、expected value of efficiency Note 1 to entry: A performance factor greater than 100 % means “better than target”, less than 100 % is deterioration.Note 2 to entry: It is expressed as a percentage (%).4 Types of performance monitoring and diagnostics4.1 Basic conceptsPerformance monitoring typically
39、includes a comparison between measured descriptors (describing the performance of a machine, for example, power, flow, efficiency) against the expected descriptors.The assessment of the performance by comparison requires identical operating conditions, such as speed, load, or temperature. Therefore,
40、 reference operating conditions are needed. With respect to the objective of the performance monitoring, different concepts are applicable:a) Performance monitoring at actual measurement conditions the operating conditions during measurement are used as reference and the expected descriptors are con
41、verted into values at these conditions. This concept is preferred, if for example, information about actual losses due to degradation under the present operating conditions is demanded.b) Defined operating conditions are used as reference for performance monitoring. The measured descriptors gained a
42、t present operating conditions are converted into values at reference conditions. This method is preferred for trending purposes to eliminate the operating conditions influence.2 ISO 2015 All rights reservedBS ISO 18129:2015ISO 18129:2015(E)NOTE Where correction to reference conditions is required,
43、advice is given in the appropriate acceptance testing standard. A selection of International Standards relating to performance and acceptance testing is included in the Bibliography to ISO 17359.4.2 Online performance monitoringThe basis of online performance monitoring is a model of the process run
44、ning in a machine (e.g. thermodynamic process like Clausius-Rankine-Cycle or Joule Cycle).Calculation results of the model are referred to as “expected” descriptors as they represent the theoretical or healthy status of the equipment for given operating conditions, i.e. without consideration of degr
45、adation, fouling, and faults. Here, the operating conditions are characterized by a small number of input parameters which are taken from measured values (in general, ambient conditions, fuel properties, speed, load, etc.).The comparison of measured descriptors with expected descriptors allows monit
46、oring of component performance, identification of abnormal performance situations, and analysis of component performance and abnormal operating conditions.The monitoring of abnormal situations is followed by an analysis. This analysis is supported by the computation of key performance parameters (e.
47、g. efficiencies and losses). Such parameters are derived from both corresponding measured descriptors and expected descriptors obtained with the model.4.3 Offline performance analysisOffline performance analysis is based on the same or a similar sophisticated model as online performance monitoring.H
48、owever, offline performance analysis allows controlled variation of the input parameters or the model characteristics.This provides the basis for “what-happens-if” calculations, which are helpful for diagnostics of deviations between measured and expected descriptors from online performance monitori
49、ng.4.4 Online performance monitoring with validationIn order to enhance data quality and to detect corrupt measurements, data validation according to VDI 2048-1 is recommended.Using this method of data reconciliation, validated results provide a consistent set of measurements and the accuracy is enhanced overall. This allows better comparison of measured descriptors with expected descriptors.The calculation process is strongly dependent on the availability of redundant or physically related measurements and the accuracy of
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