1、IEEE Std 125-2007(Revision of IEEE Std 125-1988)IEEE Recommended Practicefor Preparation of EquipmentSpecifications for Speed-Governingof Hydraulic Turbines Intendedto Drive Electric GeneratorsIEEE3 Park Avenue New York, NY 10016-5997, USA26 October 2007IEEE Power Engineering SocietySponsored by the
2、Energy Development and Power Generation Committee125TMIEEE Std 125TM-2007 (Revision of IEEE Std 125-1988) IEEE Recommended Practice for Preparation of Equipment Specifications for Speed-Governing of Hydraulic Turbines Intended to Drive Electric Generators Sponsor Energy Development and Power Generat
3、ion Committee of the IEEE Power Engineering Society Approved 7 June 2007 IEEE-SA Standards Board Abstract: This recommended practice is intended to assist users with the preparation of procurement specifications for electric-hydraulic speed governors. Keywords: control, digital, governor, hydraulic,
4、 hydroelectric, speed, stability The Institute of Electrical and Electronics Engineers, Inc. 3 Park Avenue, New York, NY 10016-5997, USA Copyright 2007 by the Institute of Electrical and Electronics Engineers, Inc. All rights reserved. Published 26 October 2007. Printed in the United States of Ameri
5、ca. IEEE is a registered trademark in the U.S. Patent +1 978 750 8400. Permission to photocopy portions of any individual standard for educational classroom use can also be obtained through the Copyright Clearance Center. Introduction This introduction is not part of IEEE Std 125-2007, IEEE Recommen
6、ded Practice for Preparation of Equipment Specifications for Speed-Governing of Hydraulic Turbines Intended to Drive Electric Generators. This recommended practice assists users with procurement specifications for turbine governing systems for hydroelectric generating units. It is recommended this d
7、ocument be used in conjunction with companion document IEEE Std 1207.aThis recommended practice is designed to be a reference document for practicing engineers in the hydroelectric industry and offers guidance for what elements of a turbine governing system need to be specified. Notice to users Erra
8、ta Errata, if any, for this and all other standards can be accessed at the following URL: http:/ standards.ieee.org/reading/ieee/updates/errata/index.html. Users are encouraged to check this URL for errata periodically. Interpretations Current interpretations can be accessed at the following URL: ht
9、tp:/standards.ieee.org/reading/ieee/interp/ index.html. Patents Attention is called to the possibility that implementation of this recommended practice may require use of subject matter covered by patent rights. By publication of this recommended practice, no position is taken with respect to the ex
10、istence or validity of any patent rights in connection therewith. The IEEE shall not be responsible for identifying patents or patent applications for which a license may be required to implement an IEEE standard or for conducting inquiries into the legal validity or scope of those patents that are
11、brought to its attention. aFor more information about this IEEE standard, please see Clause 2. iv Copyright 2007 IEEE. All rights reserved. Participants At the time this recommended practice was submitted to the IEEE-SA Standards Board for approval, the Energy Development and Power Generation Commit
12、tee Working Group had the following membership: David Apps, Chair David L. Kornegay, Vice Chair J. C. Agee Terry Bauman Steven R. Brockschink Matthew T. Davis Terry Deckman Donald Evans Russ Fostiak George Girgis Tony Griffiths Randall C. Groves James H. Gurney Hans Naeff Bernard Poulin Douglas Seel
13、y Chris Shultz Philip Spotts Winfried Stach Wayne Timm John B. Yale The following members of the balloting committee voted on this recommended practice. Balloters may have voted for approval, disapproval, or abstention. William J. Ackerman J. C. Agee S. K. Aggarwal David B. Apps Ali Al Awazi Steven
14、R. Brockschink Tommy P. Cooper Luis M. Coronado Matthew T. Davis Bostjan K. Derganc Gary R. Engmann J. Travis Griffith Randall C. Groves James H. Gurney Gary A. Heuston David A. Horvath Innocent Kamwa Joseph L. Koepfinger David L. Kornegay Lawrence D. Long Willaim Lumpkins John W. Martin Don G. McLa
15、ren Gary L. Michel Michael S. Newman Bartien Sayogo Gil Shultz William W. Terry Wayne Timm James W. Wilson Theodore C. Zeiss When the IEEE-SA Standards Board approved this recommended practice on 7 June 2007, it had the following membership: Steve M. Mills, Chair Robert M. Grow, Vice Chair Don Wrigh
16、t, Past Chair Judith Gorman, Secretary Richard DeBlasio Alex Gelman William R. Goldbach Arnold M. Greenspan Joanna N. Guenin Julian Forster* Kenneth S. Hanus William B. Hopf Richard H. Hulett Hermann Koch Joseph L. Koepfinger* John Kulick David J. Law Glenn Parsons Ronald C. Petersen Tom A. Prevost
17、Narayanan Ramachandran Greg Ratta Robby Robson Anne-Marie Sahazizian Virginia C. Sulzberger Malcolm V. Thaden Richard L. Townsend Howard L. Wolfman *Member Emeritus Also included are the following nonvoting IEEE-SA Standards Board liaisons: Satish K. Aggarwal, NRC Representative Alan H. Cookson, NIS
18、T Representative Jennie M. Steinhagen IEEE Standards Program Manager, Document Development Matthew J. Ceglia IEEE Standards Program Manager, Technical Program Development v Copyright 2007 IEEE. All rights reserved. Contents 1. Overview 1 1.1 Scope . 1 1.2 Purpose 1 1.3 Disclaimer 1 1.4 Use of IEEE S
19、td 125 2 2. Normative references 2 3. Definitions 3 4. Functions and characteristics 4 4.1 Control actuator position . 4 4.2 Control actuator stroke 4 4.3 Control actuator time . 4 5. Equipment specifications 5 5.1 General specifications 5 5.2 Governor and auxiliary functions 7 5.3 Other optional fu
20、nctions 14 5.4 Hydraulic pressure supply system . 16 5.5 New installation considerations. 21 5.6 Replacement and conversion considerations . 22 5.7 Redundancy . 23 5.8 Failsafe features. 23 5.9 Dual-regulated turbines . 24 5.10 Additional governor-controller functions 26 5.11 Environmental specifica
21、tions. 27 5.12 Software. 28 5.13 Interface to other plant systems . 29 5.14 Operator interface 30 5.15 Personnel safety features . 30 5.16 Spare parts and accessories 31 5.17 Product support 32 6. Performance specification 32 6.1 Stability 32 6.2 Permanent speed droop 34 6.3 Deadband. 34 6.4 Deadtim
22、e 35 6.5 Governor damping adjustments. 35 7. Information provided by the manufacturer. 36 7.1 Information to be provided at the time of submission of proposals. 36 7.2 Information to be provided after contract award . 36 7.3 Test procedures 37 7.4 Rehabilitation and conversion considerations . 38 8.
23、 Governor testing . 38 8.1 Factory acceptance testing. 38 8.2 On-site acceptance testing . 39 vi Copyright 2007 IEEE. All rights reserved. 9. Information provided by the specifier 41 Annex A (informative) Bibliography . 44 Annex B (informative) Glossary 46 Annex C (normative) Mode control logic 47 C
24、1 Droop mode control logic . 47 C.2 Governor mode control logic 47 Annex D (normative) Tables 49 vii Copyright 2007 IEEE. All rights reserved. IEEE Recommended Practice for Preparation of Equipment Specifications for Speed-Governing of Hydraulic Turbines Intended to Drive Electric Generators 1. 1.1
25、1.21.3Overview Scope This document recommends performance characteristics and equipment for electric-hydraulic governors for all types of hydraulic turbines intended to drive electric generators of all sizes. This recommended practice is applicable to new governors and rehabilitation of existing gov
26、ernors. Purpose This recommended practice is intended to assist users with the preparation of procurement specifications for electric-hydraulic speed governors. Disclaimer This recommended practice is intended to help users develop the technical portion of procurement specifications for electric-hyd
27、raulic speed governors. It does not cover the commercial portion of the procurement specification. It does not cover governor equipment installation procedures. 1 Copyright 2007 IEEE. All rights reserved. IEEE Std 125-2007 IEEE Recommended Practice for Preparation of Equipment Specifications for Spe
28、ed-Governing of Hydraulic Turbines Intended to Drive Electric Generators 1.42. Use of IEEE Std 125 This recommended practice should be used in conjunction with IEEE Std 1207.1IEEE Std 125 provides recommendations regarding performance characteristics and equipment specifications relating to turbine
29、governing systems for controlling hydroelectric units. IEEE Std 1207 provides application insight for applying these systems to hydroelectric units and offers experience-based guidance on the impact upon system performance of various specification parameters of turbine governing systems. In addition
30、 to providing recommendations regarding performance characteristics, it is the intent of the IEEE Std 125 to provide aid in preparing technical specifications for turbine governing systems for controlling hydroelectric units. Incorporation of the technical specifications contained in IEEE Std 125 in
31、to a user organizations specification document is left to the users discretion with respect to organization and sequence. Features and tests detailed in Clause 5, Clause 6 and Clause 8 of this document are considered either “recommended” or “optional.” The appearance of the words “should” implies th
32、is feature, function or test is recommended for all installations. The appearance of the words “may” implies this feature, function or test is optional (at the specifiers discretion). Optional items are often not implemented in the majority of installations, but may be required by some purchasers de
33、pending on their operating experience and design philosophy. The following example shows typical wording for a recommended feature: “The governor-control system should provide a means for controlling the turbine-control actuators manually.” (See 5.2.9.) The following example shows typical wording fo
34、r an optional feature: “A governor-control strategy may be specified in accordance with the anticipated performance requirements of the installation.” (See 5.2.1.2.) This document applies to new governors and governor conversions. IEEE Std 1147 contains a general overview of governor conversions. On
35、ly those paragraphs in IEEE Std 125 that apply to the specific equipment to be purchased should be used when preparing the procurement specification. Normative references The following referenced documents are indispensable for the application of this document (i.e., they must be understood and used
36、 so each referenced document is cited in text and its relationship to this document is explained). For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments or corrigenda) applies. IEEE Std 1010, IEEE Guide
37、for Control of Hydroelectric Power Plants. 2,3IEEE Std 1147, IEEE Guide for the Rehabilitation of Hydroelectric Power Plants. IEEE Std 1207, IEEE Guide for the Application of Turbine Governing Systems for Hydroelectric Generating Units. 1Information on references can be found in Clause 2. 2The IEEE
38、standards or products referred to in Clause 2 are trademarks owned by the Institute of Electrical and Electronics Engineers, Incorporated. 3IEEE publications are available from the Institute of Electrical and Electronics Engineers, 445 Hoes Lane, Piscataway, NJ 08855-1331, USA (http:/standards.ieee.
39、org/). 2 Copyright 2007 IEEE. All rights reserved. IEEE Std 125-2007 IEEE Recommended Practice for Preparation of Equipment Specifications for Speed-Governing of Hydraulic Turbines Intended to Drive Electric Generators 3.Definitions For the purposes of this recommended practice, the following terms
40、and definitions apply. The glossary in Annex B and The Authoritative Dictionary of IEEE Standards B17, 4should be referenced for terms not defined in this clause. 3.1 control actuator limit: A maximum limit within the governor system which prevents the turbine-control actuator from opening beyond th
41、e position for which the device is set. May be operator-adjustable. 3.2 control actuator velocity limiter: A device that functions to limit the control actuator velocity in either the opening, closing, or both directions, exclusive of the operation of the slow closure device. See also: slow closure
42、device. 3.3 executable code: The software code that resides in the digital controller and executes the control sequence/strategy in real time. 3.4 governor controller: A device or system that compares the turbine speed, along with any applicable intermediate feedbacks, to a reference set point and p
43、rocesses the resultant error signal to produce a command signal to the turbine-control actuator. 3.5 governor conversion: Replacement of the governor controller components of an existing governor, typically with a digital controller and new speed and turbine-control actuator position-sensing equipme
44、nt. 3.6 grid connected: The condition where the turbine-generator unit is electrically connected to a large power grid consisting of many turbine-generator units operating in parallel. 3.7 hydraulic power unit (HPU): The pumps, means for driving them, sump tank, and associated accessory devices. 3.8
45、 hydraulic pressure supply system (HPSS): The hydraulic power unit (HPU), pressure tank(s), valves, and piping connecting the various parts of the governing system. 3.9 main servomotor: The primary servomotor used to control the primary turbine-control device. For reaction turbines, the main servomo
46、tor controls the wicket gates. For impulse turbines, the main servomotor controls the deflectors. For dual-regulated turbines, the main servomotor is typically larger and faster than the secondary servomotor. 3.10 programming computer: The computer that generates and stores the source code. It is al
47、so used to download the executable code and operate the various software tools and utilities. 3.11 settings: The various user-adjustable parameters that reside in the digital controller such as time constants, gains, thresholds, etc. These are also known in the industry as tunables or constants. 3.1
48、2 slow closure device: A cushioning device that retards the closing velocity of the control actuator from a predetermined control actuator position to zero control actuator position. 3.13 speed-sensing elements: The speed responsive elements that determine speed and influence the action of other ele
49、ments of the governing system. Included are the means used to transmit a signal proportional to the speed of the turbine to the governor. 3.14 speed error: The algebraic difference between the speed reference and the measured turbine speed. 4The numbers in brackets correspond to those in the bibliography in Annex A. 3 Copyright 2007 IEEE. All rights reserved. IEEE Std 125-2007 IEEE Recommended Practice for Preparation
