300kw Turgo Turbine Generator Unit (102m head, 1.6 cusec flow)

• Output Type: AC Three Phase
• Size: Small
• Type: Horizontal Hydro Generator
• Speed: Medium Speed
• Standard: Nonstandard
• Transport Package: Wooden Case
• Model NO.: XJA-L-50/2X7.5, SF300-8/850
• Specification: ISO9001: 2000 CE CCC
• Trademark: Lanzu
• Origin: China
• HS Code: 850239000
• Production Capacity: 20

Product Description

2X300KW Turgo (two jet) Turbine Generator Units

Turgo Turbine Generator (vertical shaft) 
Main Inlet Valve (Butterfly Valve, motorized)

PLC hydraulic pressure automatic governor
Electric Control Panel (excitation, Synchronization, OC, OV, OF, UC, UV, UF Protection)

Table -1  Design Data

Design Head m	102	Turbine standard Speed r/min	750
Design Flow  m^3/s	0.4	Turbine unit runaway speed r/min	69.7
Runner Model	XJA-L-50/2X7.5	Generator standard Speed r/min	750
Designed Unit Speed r/min	37.8	Generator Frequency (Hz)	50
Design Unit Flow  m^3/s	0.193	Unit runaway speed r/min	1407.870988
Model Efficiency	0.855	Generator runaways Speed r/min	1462.5
Efficiency Revision	0	Generator Calculation Pole Number	7.858313833
Actual Turbine Efficiency	0.855	Generator Standard Pole Number	8
Generator Efficiency	0.91	Unit center line height over tail-water m	1.2
Turbine Output Kw	342.212	Calculated Governor Power 10KN	128.5457117
Generator Output ( Kw )	311.412	Round up Governor Power (10Nm)	300
m	8.5	Calculated Main Valve Diameter (M)	0.3093
Operation m	6.666	Round Up Main Valve Diameter m	Z941H-16/DN300
Number of jets	2	Jet speed  m/s	44.73522102
Calculation Jet Diameter mm	76.985	Runner line sped m/s	19.635
Roundup Jet Diameter mm	75	Speed Ratio 0.4-0.485	0.4389
Runner Diameter  mm	327.189	Max. Speed Rise %	50
Runner Diameter  mm	500	Max. Pressure Rise %	40
Operation unit Flow  m^3/s	0.1503	Specific speed m.kw	116.577
Single nozzle unit flow m3/s	0.0751	Generator power  Kw	300
Operation Unit Speed r/min	37.1305	Generator Voltage V	400
Turbine Max Flow m3/s	0.37962	Power factor	0.8
Min. Turbine Flow m3/s	0.12	Generator Current A	541.281
Max. generator output Kw	295.5541	Turbine Model	XJA-L-50/2X7.5
Turbine Calculation Speed r/min	763.5225	Generator Model	SFW300-8/850

 
Table -2
2.1 Spare parts for Turbine (per plant)

NO.	APPELLATION	UNIT	QTY	NOTE
1	Turbine Guide vane front bearing shell	pcs	12
2	Turbine Guide vane middle bearing shell	pcs	12
3	Turbine Guide vane back bearing shell	pcs	12
4	Turbine guide vane seal ring	Set	1	36 pcs
5	Turbine shear pin	pcs	6
6	Pressure gauges (spiral case)	Set	1
7	Pressure gauges (draft tube)	Set	1
8	Pressure gauges (cooling water)	set	1	300KW
9	Push button	Set	1	For governor

2.2 Spare parts for Generator (per plant)

NO.	APPELLATION	UNIT	QTY	NOTE
1	Brake block	Set	1
2	Brake oil seal ring	Nos	6
3	Rotary Diodes	Nos	3
4	Temperature sensor	Nos	3
5	Radial Thrust Bearing radial Bushing	set	1
6	Radial Thrust Pad	set	1
7	Radial bearing bushing	set	1
8	Thermometer (radial bearing)	Set	2
9	Thermometer (thrust bearing)	Set	1

Table -3 Special Tools for Turbine

NO.	APPELLATION	UNIT	QTY	NOTE
1	Rotor, flywheel dismantle tool	set	1
2	Wrenches of all kinds	set	1
3	Lift and Turning tool	set	1

Table -4  

List of Automatic Components (per unit)

No.	Item	Model	QUANT	Measured position
1	Resistance thermometer	WZPD	6 pieces	Measure Stator temperature
2	Resistance thermometer	WZP	4 pieces	Bearing Oil temperature measure
3	Flow indication signaler	SLX	2 pieces	Bearing Cooling water outlet pipeline
4	Shear pin transducer	JX-9	12 pieces	Water Distributor Mechanism
5	Vacuum Gauge	YZ-100	1 pieces	Draft tube Pressure monitoring
6	Pressure Gauge	Y-100	3 pieces	Spiral case, Bearing Cooling water inlet pipeline

Table -5
Excitation and Synchronization and Protection Panel 

NO.	ITEM	MODEL	DESCRIPTION	QTY
1	Excitation, Synchronization and Protection Panel	TLK-1W/M (300KW)	Generator excitation circuit: LC-2 brushless excitation controller: IGBT based smart control, full automatic voltage control, free from HF and MF harmonic interference, wide excitation voltage control and high stability. (especially for <15V ultra low voltage brushless excitation) Multiple operation mode: 1. Automatic constant power factor mode after synchronization (Grid voltage tracking); 2. Automatic constant voltage mode at independent operation; 3. Island operation for small network; 4. Automatic voltage restore after tripping off, 5. Automatic de-excitation during shut down; Generator Synchronization Control Circuit: 1. DW15-1000A Air Circuit Breaker 2. HD13-1000A Knife Switch 3. Generator PT/CT, 0.4KV Bus bar PT 4. ZTQ-8 Microcomputer Automatic Synchronization Device 5. Normal measuring meters for voltage, current, frequency, power factor. 6. Temperature data logging device, 1 set 7. GLB-2 generator protection device, 1 set, Provide include over voltage, under voltage, over load, over current, short circuit, under frequency, over frequency and loss of voltage protection. Power Plant Automatic Operation Control: ZK980 Smart Integrated Controller A microcomputer based automatic controller for hydropower equipment with touch screen interface and RS485 internet connection for monitoring and setting. Provides automatic start/stop of turbine generator, automatic data measuring, alarm and protection action. Main control function include: Automatic start, automatic speed control, automatic synchronization, adjust active power by the water level, reactive power automatic control, 8 line temperature display, alarm and relay, overspeed protection, electric protection during operation, automatic shutdown, automatic startup by water level, constant water level operation and communication functions. 8. GGD full enclosure cubicle	1 set

III. Main Parameters and Characteristics of Supplied Equipments

1. Water Turbine

VerticalShaft TurgoTurbine
i.) General Description of the Francis Turbine

A Turgo turbine consists of three major parts, the nozzle system, the runner and the bracket. the flow enter the water inelt nozzle from penstock, through MIV, expansion joint, inlet tube. by the open and close of the needle valve in the nozzle, thus control the flow into the turbine. The water enters the runner evenly and impacts the runner to convert the water energy into mechanical energy, and transmit through the main shaft to drive the generator rotor to rotate and then the generator converts the mechanical energy into electric energy.
1). Water inlet structure:  consists of inlet valve, expansion joint, etc. the inlet valve is to cut off the water in case of shut down the unit. it can also be used to emergently close the water in case of the unit accident and failure of the water distribution mechanism.  The expansion joint is used to compensate the installation tolerance, and facilitate the install and dismantle of the MIV, it connect the nozzle at one end, to convey the water into the bracket.
2). bracket: the turbine bracket is weld structure with steel board and stay rings. It holds the nozzle system, the runner and shaft together and support the generator on top.
The water leave the runner also discharges from the bottom of the turbine bracket.
3). Runner: the runner the heart of the turbine, it converts the water energy into mechanical energy. The runner consists of upper crown, lower band, runner blades, combined by means of welding. The material can be customized according to client requirements. The runner is mounted on the generator shaft by cone shape and torque is transmitted by key. There are pressure discharge hole on the cone hub, to reduce the axial water pressure. There are seal ring on upper crown and lower band to reduce the leakage.

3. Turbine Generator Parameters and Characteristics
XJA-W-63/2X14 Francis Horizontal Shaft Hydraulic Turbine
1. Turbine Technical Data List

No.	Item	unit	Turbine	Note:
1	Model		XJA-L-50/2X7.5
2	Designed Water head	m	102
3	Max Water Head	m	120	theoretical
4	Min. Water Head	m	97
5	Rated Flow	m^3/s	0.4
6	Rated Output	kW	342
7	Max. Output	kW	380	140m head max flow
8	Rated Speed	r/min	750
9	Runaway Speed	r/min	985
10	Rotary Direction		Counter-clockwise if viewing from turbine end
11	Rated Specific Speed	m.kW	116.6
12	Designed Efficiency	%	85.5
13	Number of Nozzle	Nos	2
15	Number of Runner bucket	pcs	16
16	Main shaft arrangement		Horizontal
17	Runner nominal diameter D1	mm	500
18	Max turbine vibration (double amplitude)	mm	0.1
19	The Noise level at 1 meter distance from the turbine spiral case		85dB(A)
20	Weight of rotary part of the turbine	kg	200
21	Total weight of the turbine	kg	4000
22	Max weight piece (turbine case) to lift with the powerhouse crane	kg	2500

2. Turbine Technical Data Details

1. Model                                         Turgo Horizontal  XJA-W-50/2X7.5
2. Runner Pitch Diameter D:                       50 cm
3. Rotary direction of the generator if viewing from the generator collection ring   Clockwise
4. Rated Speed                         750 rpm
5. Jet speed                              447 m/s
6. Specific Speed at rated water head 102 m with rated output       116.6 m.kW
7. Discharge at rated water head 102 m and rated output               0.4m3/s
8. Max. Rated Runaway Speed (nozzle at max. unit runaway open degree position, generator with empty load, max. water head)                          985 rpm
9. Number of nozzle                                     02
10. Runner arrangement                              Hang over the generator shaft end
11. The Noise at 1.0 meter above the spiral case foot pad does not exceed   85dB(A)
12. Weight of Rotary Parts (Runner)                       0.2 T
13. Total Weight of the Turbine                               4.0 T
14. Max. Lifting part in the powerhouse for the main crane      2.5T (turbine case)
15. Runner

1. Bucket Material                        ZG0Cr13Ni4Mo
2. Runner band material                 Cast steel
3. Number of bucket                      16
4. Max. External Diameter × Height         650×320

1. Main Shaft                            share shaft with generator
2. Guiding Bearing                    (Share same bearing with generator)

1. Type                                  Roller bearing
2. Material                              Thrust shell, Radial shell are of Babbitt metal

 

1. Turbine Case
2. Material                             Q235
3. Size                                 2400*2150*1650
4. Inlet Section Area                        0.57 m²
5. Inlet section flow speed                3.6 m/s
6. Drainage Equipment                   Nature drainage

1. Nozzle Mechanics

1. Material
2. Nozzle tip                       :        2Cr13
3. Needle stem                             Q235
4. Quantity                                  2 sets

1.  Turbine Weight

1. Total weight of the turbine body             3.5 T
2. Weight of main parts:

Runner                                    0.2 T
Turbine Case                          2.5 T
Other                                     1.94 T

1.  Max. Transportation Size

1. Name                                  Turbine Case
2. Weight                                   3.5T
3. Size (L×W×H)                        2500*1500*1500

1.   Reliability index

Overhaul Interval                            5 years
Total Service Life                            40 years

4. Generator Parameters
1. Model: SF300-8/850         
2. Rated Capacity: 300kW       
3.   Rated Voltage: 400V         
4. Rated Current: 541.3.1A         
5.  Rated Power Factory: 0.8 (lag)  
5. Rated Frequency: 50Hz              
7.   Phase Number.: 3                     
8. Rated Speed: 750 rpm             
9. Runaway Speed: 1480r/min       
10. Stator winding method: Y          
11. Stator insulation class: F/F      
12. Rotation Direction: clockwise direction if viewed from the generator end
13. Designed Efficiency:    92%     
14. Generator Performance:
(1) Temperature Rise, according the GB standard, when cooling media temperature is 40ºC, stator's calculation temperature rise is less than 80K, rotor's calculation temperature is less than 85K.
(2) Vibration and Swing does not exceed specification required value.
(3) Noise: Not more than 85db according standard measuring method.
(4) Ventilation Method: opening type ventilation
15. Electric Characteristics Guarantee:
a. when the stator winding is properly connected according to design method, in case of empty load at rated voltage, linear voltage wave  harmonic distortion is no more than 5%.
b. In case of empty load at rated voltage and rated speed, linear voltage "Telephone Harmonic Factor" (THF) does not exceed 3%.
c. In hot state, generator could withstand 150% rate current for 2 minutes without causing harming distortion and weld crack, etc. The voltage at such point should be as close to rated as possible.
d. In case the Generator is operating in asymmetric system, if non phase exceed rated current value, and negative phase current component vs rate current does not exceed 12%, the generator can long term operate safely. In case of asymmetric fault, in case I₂²·t<40, the generator is allowed to operate in short time, I₂ is the average square root of the negative current in t second time (per unit value).
16. Mechanical Performance Guarantee:
a. Generator should be able to withstand maximum runaway speed for 5 minutes without causing harmful distortion. When the turbine generator unit dumping 100% load, given the governor system operate normally, the Unit is permitted to connect to Grid without any check.
b. Under rated voltage or 105% rate voltage, the generator's mechanical strength could withstand stator terminal suddenly short circuited symmetrically or asymmetrically for 3 seconds without incurring harmful distortion.
17. Structure Features and Technical Requirements
Generator is horizontal, 4 pivots, roller bearing at both ends structure. Generator main shaft is coupled to turbine via flexible coupler. Generator consists of generator, rotor, end cover, brushless excitor, etc. the main bearing of the generator is two pieces of roller bearing at both end of the stator bracket.
1). Stator
        Stator unit consists of Frame, Iron core, Winding, etc. Stator Frame is Q235 steel plate, stator Iron core is low loss, non-aging, high quality cool roll thin silicon steel laminated; stator winding conductor is annealed copper, with required conductivity.
2). Rotor
Rotor unit consists of Main shaft, Magnet yoke, Magnet pole and fans etc. Main shaft adopts 45# high quality steel, and complies with JB/1270 "Specification for shaft forgings hydro turbines and hydro generators" requirements. Magnet pole consists of Iron core, Magnet pole winding, upper and lower layer board, etc. Iron core is made from laminated1.5mm steel plate and.
3). End Cover
     Front and Back End cover is foreseen, roller bearings are mounted in the end cover.
4). Monitoring Instruments
There are six PT resistance embedded in the generator stator to detect temperature.
5). Generator insulation class is F class.

Standard and specification the Equipment complies:
GB/T15468-1995        Fundamental Technical Requirements for Hydraulic Turbines
GB/T10969-1996        Specifications for Water Passage Components of Middle and Small Hydraulic Turbines
GB7894-2001              Fundamental technical specifications for Hydro generators
GB11805-89                Basic Technical Specification for automatic control components and their related systems for Middle and Small hydro generating sets
JB/DQ1554-89            Middle and small hydraulic turbine Quality classification
JB/DQ3467-88            Middle and small hydraulic turbine Generator Quality classification
DL/T563-95                  Hydraulic turbine electric and hydraulic regulation system and hydraulic pressure device technical specification
GB/T11352-89             Normal cast carbon steel for engineering use
GB6969-86                  Middle High strength stainless steel cast piece for engineering structure
GB/T699-1999            Quality Carbon Structural Steels Technical Specification      
GB/T 1591-1994         High Strength Low Alloy Structural Steels
GB/T 1591-1994         High Strength Low Alloy Structural Steels
GB/T 8162-1999        Seamless steel pipe
GB/T5117-1995          Covered electrodes for manual metal arc welding of non-alloy and fine grain steels
GB/T 3098.1-2010      Mechanical properties of fasteners -Bolts, screws and studs
GB/T983-2012           Covered electrodes for manual metal arc welding of stainless and heat-resisting steels
GB/T755--2000          Rotating generator, rating and performance     
GB/T1029-1993         Test procedures for three-phase synchronous machines
GB/T755--2000          Rotating generator, rating and performance     
GB/T1029-1993         Test procedures for three-phase synchronous machines
GB/T 1800.1-2009     Geometrical product specifications (GPS) - Limits and fits - Part 1: Bases of tolerances, deviations and fits
GB/T1804-1992         General tolerances for linear dimensions without individual tolerance indications
GB 2649-1989           Methods of sampling for mechanical properties tests of welded joint
GB 2651~2656-2008    Tensile test method on welded joints 
GB8564-2003             Specification installation of hydraulic turbine generator units      
GB/T 12222/12223     Multi-turn valve actuator attachments
GB 4208                     Degrees of protection provided by enclosure (IP code)
GB/T 12238-2008      Flanged and wafer resilient seal butterfly valves
GB/T13927-92           General purpose valve - pressure test
GB/T 9112-2010        Types and parameters for steel pipe flanges
GB/T12227-2005       General purpose industrial valve-Specification of spherical graphite iron castings
GB/T 1047-2019        Pipework components -Definition and selection of nominal size
GB 1094-1996           Power transformers
JB/T 10318-2002      Specification and technical requirements for oil immersed amorphous ally core distribution transformer
GB/T 6451-2015       Specification and technical requirements for oil-immersed power transformers
JB/T8860-1997         Specification for turbine generator unit packing, transportation and storage

2. Check and Test
The "supplier" must check, test and pre-assembly the equipments and major components in the factory according related technical standard and specification, to find out the quality and performance index complies with related requirements, properly adjust assembly part clearance, make matching mark or position pin, to ensure correct assembly on the site.
All factory inspection items and ex-factory inspection items will generator inspection report and record.


The turbine generator is different for every hydropower plant.
To make a customized quotation we need to make the model selection first.

Project data required for turbine generator model selection :

1	Water Head		(m)
2	Total Discharge		(m3/s)
3	Discharge per turbine		(m3/s)
4	Number of Units		(set)
5	Generator Voltage		(V)
6	Generator Frequency		(Hz)
7	Grid Voltage		(V)
8	Total installation capacity		(KW)

It would be great if you have a complete specification document for the machine requirement,
Our engineer will make their professional suggestion and advice.
The model selection service is completely free.