Detail of GB/T 8564-2023

Introduction of GB/T 8564-2023

Technical specification for installation of hydraulic turbine-generator units 1 Scope This document specifies requirements for the installation and commissioning of vertical mixed-flow turbine, axial-flow turbine, horizontal mixed-flow turbine, bucket turbine, speed regulating system, main valve and accessories of turbine, vertical hydraulic generator, horizontal hydraulic generator, excitation system and static frequency conversion (SFC) starting device, bulb tubular hydraulic turbine-generator unit and auxiliary equipment of hydropower station, the electrical test for installation of stator and rotor of hydraulic generator, and the start-up and trial run of hydraulic turbine-generator unit. This document applies to installation and acceptance of mixed-flow, axial-flow, bucket-type, bulb tubular hydraulic turbine-generator units and mixed-flow reversible pumped storage units. 2 Normative references The following normative documents contain provisions which, through reference in this text, constitute provisions of this standard. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. GB/T 2900.25 Electrotechnical terminology - Rotating electrical machines GB/T 2900.45 Electrotechnical terminology - Hydroelectric power plant machinery GB/T 7409.3 Excitation system for synchronous electrical machines - Technical requirements of excitation system for large and medium synchronous generators GB/T 7596 In-service quality criteria of mineral turbine oils used in power plants GB/T 9239.1 Mechanical vibration - Balance quality requirements for rotors in a constant (rigid) state - Part 1: Specification and verification of balance tolerances GB/T 9652.1 Specification of hydraulic turbine governing systems GB/T 9652.2 Testing specification of hydraulic turbine governing systems GB/T 10969 Specification for water passage components of hydraulic turbines storage pumps and pump-turbines GB 11120 Lubricating oils for turbines GB/T 11345 Non-destructive testing of welds - Ultrasonic testing - Techniques, testing levels, and assessment GB/T 11805 General specifications of automatic control components (devices) and their related system for hydro turbine-generating sets GB/T 14039 Hydraulic fluid power - Fluids - Method for coding the level of contamination by solid particles GB/T 14478 Fundamental technical requirements for large and medium inlet valves of hydraulic turbine GB/T 17116.1 Pipe supports and hangers - Part 1: Technical specification GB/T 17116.2 Pipe supports and hangers - Part 2: Pipe attachments GB/T 17116.3 Pipe supports and hangers - Part 3: Middle connection attachments and building structure attachments GB/T 18482 Specification for start-up test of reversible pumped-storage units GB/T 20835 Guide for magnetization test of generator stator core GB/T 28546 Specification for package, transportation and storage of large and medium hydraulic units GB/T 28566 Security specification and its evaluation for generating unit interconnection GB/T 28570 Technical guide of on-line condition monitoring system for hydraulic turbine and generator units GB/T 29529 Methods of measuring and evaluating noise of pumps GB/T 29531 Methods of measuring and evaluating vibration of pumps GB/T 29711 Non-destructive testing of welds - Ultrasonic testing - Characterization of discontinuities in welds GB/T 29712 Non-destructive testing of welds - Ultrasonic testing - Acceptance levels GB/T 32899 Test code of SFC starting device for pumped storage power unit GB/T 40734 Non-destructive testing of welds - Phased array ultrasonic testing (PAUT) - Acceptance levels GB 50147 Code for construction and acceptance of high-voltage electric equipment installation engineering GB 50148 Code for construction and acceptance of power transformers oil reactor and mutual inductor GB 50150 Electric equipment installation engineering - Standard for hand-over test of electric equipment GB 50168 Standard for construction and acceptance of cable line electric equipment installation engineering GB 50171 Erection works of electrical installations - Code for construction and acceptance of switchboard outfit, complete cubicle and secondary circuit DL/T 474.1 Guide for insulation test on site - Insulation resistance, dielectric absorption ratio and polarization index test DL/T 489 Test code for static rectifier excitation system of large and medium-sized hydro-generator DL/T 490 Rule for installation and accepting test regulation of the generator excitation system DL/T 496 Guide of regulating and testing for electro-hydraulic regulating system and devices of hydraulic turbines DL/T 507 Start-up test code for hydro-generating units DL/T 563 Technical code for electro-hydraulic regulating system and unit used in hydraulic turbines DL/T 583 Specification for static rectified excitation systems for large and medium hydro generators DL/T 827 Start-up test code for bulb hydro-generating units DL/T 862 Code of installation and acceptance for automation components (devices) for hydropower plants DL/T 1013 Test guide for microprocessor excitation regulator for large and medium hydro generators DL/T 1245 Technical guide for hydraulic turbine regulating system in grid DL/T 1770 Code for filling and emptying procedures of water conveyance system for pumped storage power station DL/T 1800 Technical guide for modeling and testing of hydraulic turbine governing system DL/T 1818 Specification of reversible pump-turbine governing system test DL/T 2194 Guide for technical requirements and test on primary frequency control of hydroelectric generating units DL/T 5070 Technological guide for manufacturing, assembling and welding of metal spiral case of turbine in site DL/T 5420 Technological guide for stator assembly in site of hydraulic generators NB/T 35089 Technical specification for the ring gate of hydraulic turbines NB/T 47013.4 Nondestructive testing of pressure equipments - Part 4: Magnetic particle testing NB/T 47013.5 Nondestructive testing of pressure equipments- Part 5: Penetrant testing NB/T 47013.10 Nondestructive testing of pressure equipments - Part 10: Ultrasonic time of flight diffraction technique 3 Terms and definitions For the purposes of this document, the terms and definitions given in GB/T 2900.25 and GB/T 2900.45, and the following apply. 3.1 assembly process of combining parts into a complete component, following a given operating sequence, 3.2 installation operating process in which components are combined into a complete set according to the intended purpose and the equipment is secured in the specified position as required, so as to enable the intended function 3.3 reference for installation measurement and positioning reference for spatial positions based on which equipment or components are assembled and installed 3.4 deviation difference between a value and the reference value Note: For dimensional deviations, the reference value is represented by the nominal dimension and “a value” is represented by the actual size. 3.5 verticality distance of the centerline of equipment or component deviating from the plumb line, and distance of the orientation or the characteristic surface of the equipment or component deviating from the plumb line, expressed in relative values or in absolute values based on the selected position 3.6 orientation and center Orientation refers to the X and Y marker lines on a part or component; center refers to the intersection of the X-X and Y-Y marker lines on a part or component 3.7 vibration reciprocal displacement of the specified points of components in a unit relative to the equilibrium position, varying over time 3.8 run-out radial vibration of a part of the rotating spindle of a unit relative to the neighboring fixed components 3.9 barring operation of slowly rotating the shaft system of a unit by manual, mechanical or electrical means, and measuring the run-out of each characteristic part of the shaft system in order to obtain the spatial position status of the shaft system 3.10 run-out during unit turning run-out value (peak-to-peak) measured during turning of the unit 3.11 run-out during unit operation run-out value (peak-to-peak value at passband frequency) measured during normal or transient operation of the unit Note: Run-out during unit operation is also known as shaft vibration. 3.12 relative shaft vibration measurement shaft vibration measurement of a rotating shaft using a fixed part of the unit (e.g., bearing housing) as a reference 3.13 vibration in wide band frequencies algebraic difference between the peak and trough envelopes of the full waveform signal of the absolute vibration of the fixed components or the relative vibration (run-out) of the rotating components of a hydraulic turbine-generator unit in a measurement period (at confidence level of 0.97 ) 3.14 rotational frequency f0 frequency of rotation of the spindle of a hydraulic turbine-generator unit Note: f0=n/60, where n is the synchronous speed of the generator. Rotational frequency is also known as the base frequency or one-octave frequency. 3.15 polar frequency fp important parameter characterizing the fundamental vibration frequency of hydraulic generator, which is the product of the number of poles, 2P, and the rotational frequency of the hydraulic generator Note: fp=2P·f0, where P is the number of pole pairs. 3.16 idle running simply mechanical rotation behavior of hydraulic turbine-generator unit without excitation 3.17 speed no-load operation mode in which the hydraulic turbine-generator unit is put into excitation at rated speed, with the generator terminal voltage at the rated voltage and the generator output apparent power at zero 3.18 rotor roundness difference between the maximum and minimum radius of any cross section at the outer edge of the rotor pole core of hydraulic generator Note: That is, the distance between the inner and outer envelopes of the outer edge contour line of the rotor pole core, and is measured at the bump of the pole core. 3.19 stator roundness difference between the maximum and minimum radius of any cross section at the inner edge of the stator core of hydraulic generator Note: That is, the distance between the inner and outer envelopes of the inner edge contour line of the stator core. 3.20 air gap minimum radial distance between the outer edge of rotor pole and the inner edge of stator core in a generator 3.21 partial discharge (PD) electrical discharge where the insulation between conductors is only partially bridged Note 1: Partial discharge may or may not occur near the conductor. Note 2: For the purposes of this document, partial discharge (PD) refers to the phenomenon of electrical discharge in or on the partially bridged insulation of stator winding of hydraulic generator. Note 3: Partial discharge includes discharge inside insulation, slot discharge, discharge between bar layers, winding end discharge and single bar discharge along the surface. 3.22 corona partial discharge, in the main form of glow, generated by the gas medium around the insulation surface of stator bar or winding end due to ionization under a certain potential gradient Note 1: Corona is usually accompanied by luminescence and noise, and is a form of partial discharge. Note 2: For the purposes of this document, it refers to the discharge glow phenomenon that is observable in a dark environment on the insulation surface of the stator bar or on the insulation surface at the winding end, e.g., at slot end pad and bevel pad, between a bar and end hoop, bar and stator core, where the stator bar or winding is charged. 3.23 building information modeling (BIM) modeling the real information contained in a building by digital information simulation based on a building model established based on the relevant information data of the construction project 4 General requirements 4.1 Before installation of the unit equipment, the following relevant technical data shall be available: a) construction drawings and technical documents, including design reports and design modification notices; b) drawings and technical requirements of the equipment, including installation instructions, operation and maintenance instructions and technical reports; c) end-of-manufacturing quality documents of the equipment, including end-of-manufacturing inspection records, test records, acceptance certificates and material performance reports of main parts and components; and d) construction organization design or construction scheme.

Contents of GB/T 8564-2023

Foreword i 1 Scope 2 Normative references 3 Terms and definitions 4 General requirements 5 Installation of the vertical mixed-flow and axial-flow turbines 5.1 Installation of embedded components 5.2 Assembly of the runner 5.3 Pre-installation of water distributor 5.4 Installation of rotating components 5.5 Installation of the guide vanes and servomotors 5.6 Installation of the turbine guide bearings and spindle seals 5.7 Installation of the cylindrical valve 5.8 Installation of the hydraulic turbine accessories 6 Installation of horizontal mixed-flow turbines 6.1 Installation of embedded components 6.2 Installation of the volute and the water distributor 6.3 Installation of the bearing housing 6.4 Installation and adjustment of bearing bush 6.5 Installation of spindle 6.6 Installation of the runner and accessories 7 Installation of bucket turbines 7.1 Installation of embedded components in foundation and tailwater lining 7.2 Installation of the flow steadying grid 7.3 Installation of casing 7.4 Installation of the looped distributing pipe 7.5 Installation of the hydraulic turbine spindle 7.6 Installation of the nozzle and the deflector 7.7 Installation of the runner 7.8 Installation of the bearing of vertical bucket turbine 7.9 Installation of the horizontal bucket turbine 8 Installation and commissioning of speed regulating systems 8.1 Installation and commissioning of the oil pressure supply unit 8.2 Installation and commissioning of the regulator 8.3 Installation of the pipeline for the speed regulating system 8.4 Oil filling and field test of the speed regulating system 9 Installation of the main valves and accessories of hydraulic turbine 9.1 Installation of the embedded components in the foundation 9.2 Installation of the butterfly valve 9.3 Installation of the ball valve 9.4 Installation of the expansion joint 9.5 Installation of the bypass valve and the pipeline system equipment 9.6 Installation of the main valve operating mechanism 9.7 Field test of the main valve 10 Installation of vertical hydraulic generators 10.1 Assembly of the stator 10.2 Assembly of the rotor 10.3 Frame assembly 10.4 Bearing bush scraping and bearing pre-assembly 10.5 General installation of generator 10.6 Installation of generator accessory 11 Installation of horizontal hydraulic generator 11.1 Installation of embedded components in the foundation 11.2 Installation of bearing housing 11.3 Installation and adjustment of bearing bush 11.4 Bearing inspection and clearance adjustment 11.5 Stator installation 11.6 Rotor installation and final assembly of generator 12 Installation and commissioning of excitation system and static frequency conversion (SFC) starting device 12.1 Excitation system equipment installation 12.2 Commissioning of excitation system equipment 12.3 Installation of static frequency conversion (SFC) starting device 12.4 Commissioning test of static frequency conversion (SFC) starting device 13 Installation of bulb hydraulic turbine-generator unit 13.1 Installation of embedded components 13.2 Assembly of water distributor 13.3 Spindle and bearing assembly 13.4 Runner assembly and test 13.5 Installation of water distributor and servomotor 13.6 Spindle installation and adjustment 13.7 Installation of runner and runner chamber 13.8 Assembly of rotor 13.9 Assembly of stator 13.10 Assembly of bulb head elements 13.11 General assembly of unit 13.12 Accessory installation 14 Installation and commissioning of auxiliary equipment 14.1 Production of fittings and pipe accessories 14.2 Pipe welding 14.3 Installation of pipelines 14.4 Tests of pipes and fittings 14.5 Purge and cleaning of pipelines 14.6 Installation and commissioning of oil system equipment 14.7 Installation and commissioning of water system equipment 14.8 Installation and commissioning of gas system equipment 15 Electrical test of stator and rotor installation of hydraulic generators 15.1 Inspection of stator windings before building-in 15.2 AC withstand voltage test during stator winding installation 15.3 Electrical test of stators 15.4 Electrical test of rotor poles and accessories 15.5 Test of rotor winding 16 Startup and trial run of hydraulic turbine-generator unit 16.1 General provisions 16.2 Water filling test of units 16.3 Speed no-load test of units 16.4 Unit grid connection and load test 16.5 Startup and trial run of reversible pumped storage unit Annex A (Informative) Application of laser tracking measurement technology Annex B (Informative) List of handover materials Annex C (Informative) Hydraulic test of looped distributing pipe Annex D (Normative) Stator winding drying requirements for hydraulic generator Annex E (Informative) Sensor installation requirements for on-line monitoring device of hydraulic turbine-generator unit Annex F (Informative) Pickling, passivating and flushing of pipelines Annex G (Informative) List of typical test items for static (waterless) commissioning of hydraulic turbine-generator unit and its ancillary equipment Bibliography