SAE J 1939-75-2015 Application Layer - Generator Sets and Industrial.pdf

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1、 _ SAE Technical Standards Board Rules provide that: “This report is published by SAE to advance the state of technical and engineering sciences. The use of this report is entirely voluntary, and its applicability and suitability for any particular use, including any patent infringement arising ther

2、efrom, is the sole responsibility of the user.” SAE reviews each technical report at least every five years at which time it may be revised, reaffirmed, stabilized, or cancelled. SAE invites your written comments and suggestions. Copyright 2015 SAE International All rights reserved. No part of this

3、publication may be reproduced, stored in a retrieval system or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of SAE. TO PLACE A DOCUMENT ORDER: Tel: 877-606-7323 (inside USA and Canada) Tel: +1 724-776-49

4、70 (outside USA) Fax: 724-776-0790 Email: CustomerServicesae.org SAE WEB ADDRESS: http:/www.sae.org SAE values your input. To provide feedback on this Technical Report, please visit http:/www.sae.org/technical/standards/J1939/75_201511 SURFACE VEHICLE RECOMMENDED PRACTICE J1939-75 NOV2015 Issued 200

5、2-12 Revised 2015-11 Superseding J1939-75 MAY2011 Application Layer - Generator Sets and Industrial RATIONALE This SAE Recommended Practice has been updated to reflect a change in the publishing of SPN and PGN definition details formerly in Section 5.2 and Section 5.3, respectively. This technical c

6、ontent is now published in SAE J1939DA. Section 5.2 and Section 5.3 now direct the reader to SAE J1939DA for this information. FOREWORD The SAE J1939 communications network is defined using a collection of individual SAE J1939 documents based upon the layers of the Open System Interconnect (OSI) mod

7、el for computer communications architecture. The SAE J1939-75 document defines the OSI Application layer data parameters (SPNs) and messages (PGNs) for information predominantly associated with monitoring and control generators and driven equipment in electric power generation and industrial applica

8、tions. The SAE J1939 communications network is a high speed ISO 11898-1 CAN based communications network that supports real-time closed loop control functions, simple information exchanges, and diagnostic data exchanges between Electronic Control Units (ECUs) physically distributed throughout the ve

9、hicle. The SAE J1939 communications network is developed for use in heavy-duty environments and suitable for horizontally integrated vehicle industries. The SAE J1939 communications network is applicable for light-duty, medium-duty, and heavy-duty vehicles used on-road or off-road, and for appropria

10、te stationary applications which use vehicle derived components (e.g. generator sets). Vehicles of interest include, but are not limited to, on-highway and off-highway trucks and their trailers, construction equipment, and agricultural equipment and implements. The physical layer aspects of SAE J193

11、9 reflect its design goal for use in heavy-duty environments. Horizontally integrated vehicles involve the integration of different combinations of loose package components, such as engines and transmissions, that are sourced from many different component suppliers. The SAE J1939 common communicatio

12、n architecture strives to offer an open interconnect system that allows the ECUs associated with different component manufacturers to communicate with each other. SAE INTERNATIONAL J1939-75 NOV2015 Page 2 of 8 TABLE OF CONTENTS 1. SCOPE 2 2. REFERENCES 2 2.1 Applicable Documents 2 3. DEFINITIONS AND

13、 ABBREVIATIONS . 3 3.1 DEFINITIONS . 3 3.2 ABBREVIATIONS . 5 4. TECHNICAL REQUIREMENTS 5 4.1 Parameters and Parameter Group Introduction 5 4.2 Parameter (SPN) Definitions . 8 4.3 Parameter Group (PGN) Definitions . 8 5. NOTES 8 5.1 Marginal Indicia . 8 Table 1 SPN summary for generator parameters 5

14、Table 2 PGN summary for generator parameters 6 Table 3 SPN summary for utility parameters . 6 Table 4 PGN summary for utility parameters . 6 Table 5 SPN summary for bus #1 parameters . 7 Table 6 PGN summary for bus #1 parameters 7 Table 7 SPN summary for synchronization parameters 7 Table 8 PGN summ

15、ary for synchronization parameters 8 1. SCOPE SAE J1939-75 Generator Sets and Industrial Applications defines the set of data parameters (SPNs) and messages (PGNs) for information predominantly associated with monitoring and control generators and driven equipment in electric power generation and in

16、dustrial applications. The data parameters (SPNs) and messages (PGNs) previously published within this document are now published in SAE J1939DA. Applications using the SAE J1939-75 document may need to reference SAE J1939DA for the SAE J1939 parameters and messages for monitoring and controlling th

17、e power units, e.g., engines and turbines, that power the generators and driven industrial equipment. 2. REFERENCES 2.1 Applicable Documents The following publications form a part of this specification to the extent specified herein. Unless otherwise indicated, the latest issue of SAE publications s

18、hall apply. 2.1.1 SAE Publications Available from SAE International, 400 Commonwealth Drive, Warrendale, PA 15096-0001, Tel: 877-606-7323 (inside USA and Canada) or +1 724-776-4970 (outside USA), www.sae.org. SAE J1939 Serial Control and Communications Heavy Duty Vehicle Network - Top Level Document

19、 SAE J1939DA Digital Annex of Serial Control and Communications Heavy Duty Vehicle Network Data SAE J1939-71 Vehicle Application Layer SAE INTERNATIONAL J1939-75 NOV2015 Page 3 of 8 3. DEFINITIONS AND ABBREVIATIONS 3.1 DEFINITIONS See SAE J1939 for terms and definitions that are not defined in this

20、document. 3.1.1 AC Apparent Power The range and resolution requirements for AC Apparent Power are the same as for AC Real Power. Apparent power is an unsigned quantity, but there is no benefit in having a larger range for apparent power than for real power. 3.1.2 AC Frequency Measured AC frequency i

21、s an unsigned quantity. Common nominal frequencies in use worldwide for generator sets are 50 Hz, 60 Hz, and 400 Hz. The minimum resolution for display and control is 0.1 Hz. When AC frequency is used to represent frequency difference, such as might be used by a synchronizer, then a signed quantity

22、is required. 3.1.3 AC Kilowatt-Hour AC Kilowatt-hour measures the total energy output of a generator set, or the total import/export energy of a utility incomer. AC Kilowatt-hour could be considered a signed quantity, since reverse power would subtract (or, for a utility incomer, import and export p

23、ower would cancel each other). In practice, if there is a significant amount of power flowing in either direction at different times, the “positive” and “negative” flow should be accumulated separately. A utility might charge a different rate for “imported” power than it pays for “exported” power. T

24、herefore it is desirable to treat this as an unsigned quantity, and to accumulate positive and negative kW separately. For a generator set, the range should be sufficient to accumulate the output of a 10 MW generator set operating continuously at 80% capacity for 100 000 hours: 800 000 MWH. (For a u

25、tility incomer, the range must be somewhat higher.) 3.1.4 AC Phase Difference AC Phase Difference represents the phase difference between the Bus #1 and Utility or Generator voltages. The voltages tested may be line-line or line-neutral, and may be based on a single phase or a combination of two or

26、more phases. This is up to the control generating the data. The phase difference is a signed angle ranging from -180 degrees to +180 degrees. A resolution of 0.1 degree is adequate. 3.1.5 AC Power Factor AC Power Factor measures the ratio of real power to apparent power, sometimes approximated as th

27、e cosine of the angle between voltage and current for a single phase. The range is -1.0 to +1.0. Negative values indicate reverse power flow. A value of 1.0 indicates that all of the power flow is real power delivered to the load (i.e., a purely resistive load). A value of 0.0 indicates that no real

28、 power is delivered to the load (i.e., a purely reactive load). Power factor can be leading (a capacitive load) or lagging (an inductive load). This is not indicated by the sign of the power factor, but by a separate flag. 3.1.6 AC Reactive Power In a normally operating system, the reactive power wi

29、ll be less than half the real power. In order to allow for fault conditions, it is desirable to have the same range for reactive power as for real power. Reactive power is a signed quantity, like real power. SAE INTERNATIONAL J1939-75 NOV2015 Page 4 of 8 3.1.7 AC Real Power AC Real Power must be sig

30、ned since power may flow in both directions. The range for reverse power does not need to be as large as the range for positive power for a generator set, but this quantity might also be used to measure power imported from a utility. In this case, a negative value for real power indicates power deli

31、vered (sold) to the utility, and might equal the total capacity of the generator sets. A “large“ diesel or gas generator set might have a capacity of around 10 MW (about 13 000 HP). Assuming it is desired to measure the power output of up to 20 generator sets paralleled together, the total capacity

32、will be around 200 MW. The required resolution for a small (20 kW) generator set is approximately 0.1 kW = 100 W. 3.1.8 AC RMS Current The maximum size breaker commonly available for generator sets is 6500 A. It is desirable to provide a 10X allowance for fault current measurement, which results in

33、a desired range of 0 to 65 000 A. 3.1.9 AC RMS Voltage The maximum voltage likely to be measured by a generator set monitoring device is 33 kV (the UK heavy distribution voltage). Utility voltage may be much higher, but will be stepped down for paralleling with generator sets. 3.1.10 Dead Bus Dead B

34、us flag indicates whether the synchronizer or sync check relay has determined that the bus is dead for the purpose of connecting the utility to the bus. When standby generator sets are brought online in response to a utility failure, the first generator set to connect to the bus must connect to a de

35、ad bus without synchronizing. Subsequent generator sets may synchronize to the first online generator set. A dead bus is typically indicated by a bus voltage less than a programmed threshold, but a more sophisticated method may be used. (The dead bus threshold used for Bus #1 / Utility synchronizati

36、on may be different than that used for Bus #1 / Generator synchronization.) The voltages tested may be line-line or line-neutral, and may be based on a single phase or a combination of two or more phases. This is up to the control generating the flag. 3.1.11 Total AC Energy Total AC Energy is the to

37、tal energy exported or imported by the generator set or utility. For generator sets, exported energy is energy delivered to the load (the normal situation). Imported energy is energy taken from the load or bus (reverse power, an abnormal and potentially damaging situation). For utilities, exported e

38、nergy is energy delivered by the generator set to the utility. Imported energy is energy delivered by the utility to the load. Unlike the case with generator sets, both exported and imported energy are normal for a utility. 3.1.12 Utility Incomer Any source of power that is present for which the use

39、r is not responsible for the generation of that power. This is typically the local utility or power company, but could be other power sources, such as the power coming from a system at a separate building. SAE INTERNATIONAL J1939-75 NOV2015 Page 5 of 8 3.2 ABBREVIATIONS A Ampere AC Alternating Curre

40、nt Hz Hertz kWh Kilowatt hour RMS Root Mean Square V Voltage VA Volt-Ampere VAr Volt-Ampere reactive W Watt 4. TECHNICAL REQUIREMENTS The application Layer provides a means for application processes to access the OSI environment. This layer contains management functions and generally useful mechanis

41、ms to support applications. 4.1 Parameters and Parameter Group Introduction 4.1.1 General Parameter Grouping The Parameter Groups are organized according to Generator, Utility, and Bus related parameter quantities. The Generator PGNs describe the generator output: voltage, current, frequency, and po

42、wer. The Utility PGNs describe the input from a utility: also voltage, current, frequency, and power. The Bus PGNs describe the voltage and some other parameters on the bus, which is a point where multiple generator sets and utilities can be paralleled together to drive a load. 4.1.2 Generator and U

43、tility Parameters and Parameter Groups The Generator and Utility related PGNs are further organized according to Total and Per-Phase related parameter quantities. In a three-phase power system, the voltage, current, and power can be measured independently for each phase (labeled phase A, phase B, an

44、d phase C). These per-phase values can then be combined to form total (or average, or overall) quantities. For some generator configurations, the per-phase values are not meaningful, and the total quantities are the only values available. Frequency parameter information is in the per-phase PGNs in o

45、rder to keep symmetry with the total PGNs, and to support independent frequency measurements on the individual phases. The SPNs and PGNs for the Generator and Utility parameters are summarized in Table 1 through Table 4. Table 1 - SPN summary for generator parameters Generator AC Quantities Referenc

46、e Type Phase A Phase B Phase C Total Average Real Power SPN 2453 2454 2455 2452 - Apparent Power SPN 2461 2462 2463 2460 - Reactive Power SPN 2457 2458 2459 2456 - Power Factor SPN 2465 2466 2467 2464 - Power Factor Lagging SPN 2519 2520 2521 2518 - Line-to-Line AC RMS Voltage SPN 2441 2442 2443 - 2

47、440 Line-to-Neutral AC RMS Voltage SPN 2445 2446 2447 - 2444 AC RMS Current SPN 2449 2450 2451 - 2448 AC Frequency SPN 2437 2438 2439 - 2436 KWh Import SPN - - - 2469 -KWh Export SPN - - - 2468 - SAE INTERNATIONAL J1939-75 NOV2015 Page 6 of 8 Table 2 - PGN summary for generator parameters Generator

48、AC Quantities Reference Type Phase A Phase B Phase C Total Average Real Power PGN 65026 65023 65020 65029 - Apparent Power PGN 65026 65023 65020 65029 - Reactive Power PGN 65025 65022 65019 65028 - Power Factor PGN 65025 65022 65019 65028 - Power Factor Lagging PGN 65025 65022 65019 65028 - Line-to-

49、Line AC RMS Voltage PGN 65027 65024 65021 - 65030 Line-to-Neutral AC RMS Voltage PGN 65027 65024 65021 - 65030 AC RMS Current PGN 65027 65024 65021 - 65030 AC Frequency PGN 65027 65024 65021 - 65030 KWh Import PGN - - - 65018 -KWh Export PGN - - - 65018 - Table 3 - SPN summary for utility parameters Utility AC Quantities Reference Type Phase A Phase B Phase C Total Average Real Power SPN 2487 2488 2489 2486 - Apparent Power SPN 2495 24