发电机安装使用维护说明书英文.pdf

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1、Sondu/Miriu Hydropower Project Sangoro Power Plant Contract.No.SDM08 Employer KENGEN Engineer Nippon Koei Co.,Ltd.Contractor Sinohydro Corporation Ltd.Document No.MD-06-B2-05-004 R1 Page s 5 Date 16th Mar 2011 OPERATION AND MAINTENANCE MANUAL OF GENERATOR Lot AP-2 R1 16th Mar 2011 1st Submission REV

2、.DATE PREPARED CHECKED ENDORSED APPROVED Description Format:A4 1 Operation of generator Preparations before start-up,including:a Clean the work-yard and the generator set from any debris.b Check the tightening condition,lock the gasket tightly,tack weld if necessary;keep the rotatable parts clean.c

3、Check the inlet and outlet water pipelines,oil pipelines and valves,in order to know if there are leakages and problems of water flow in the pipe.d Check the level of lubricating oil,oil number,oil quality,water pressure,and record the water temperature and ambient temperature.e Check each connectin

4、g cable,to make sure that the joints contact well and without rust,connection is right,and the marks are complete and distinct.f Check if the equipments of high-pressure oil and the brake run normally,and if the brake pressure can meet the relevant requirements.g Check the fire extinguishing system

5、and other protecting facilities,to ensure security.h Check the gaps between rotating parts and stationary parts,especially when there are dimension requirements.i Make preparation work of recording before start-up.Initial no-load start-up operation The time of initial start-up of generator,operating

6、 sequence and the general commander shall be determined through consultation among the buyer,the seller and the installation entity.1.2.1 Under the organization of the general commander,the operators and monitors shall get ready.Before start-up,first open the cooling water of the upper and lower oil

7、 cooler and air cooler.The temperature of the oil in the oil tank shall not be lower than 100C,and that in the plastic bush tank shall not be lower than 50C.Push the rotor upward with high-pressure oil,and make the thrust pad lubricate to avoid dry friction.Manually start the generator and let the r

8、otating speed increase to 30%50%of the nominal speed,so that the oil-bound film can be quickly formed.Let it run for a period of time and check the bearing temperature every 1 min.,until the value keeps stable.There shall be no sharp increase of bearing temperature.At the same time,monitor the sound

9、 and observe every part to see if an abnormity occurs.When the generator running becomes stable and bearing temperature is normal,increase the rotating speed to the nominal speed gradually.Make the detecting records timely:a bearing temperature b temperature of inlet cooling water and outlet cooling

10、 water c oil level dvibration of rack If the vibrationg of the generator meets the requirements otherwise balance test will be needed,and the temperature of the bearing bush keeps stable,the machine can be stopped for check.Checking after the generator stops a looseness,etc.in the parts of the rotor

11、;b resetting of the brake;c Leakage of oil and water,and oil splashing of the upper and lower oil pipe.Initial on-load run Before the initial on-load run,the approval of relevant authority is needed,and the checking work of the phase sequence of network and the generator shall be well done.At the sa

12、me time,open all the cooling water,and check water pressure and flow,level of lubricating oil,winding of stator and rotor,bearing,etc.,and make good preparation before start-up.Increase exciting current gradually at the nominal rotating speed.Only when generators voltage,frequency and phase angle me

13、et the requirement of network,synchronize them and switch on,and then increase loads in phases,and at the same time make good records,like increase of temperature,vibration,etc.If there are no abnormalities,bring the load to rated power,maintain hour running,and check carefully the following items:a

14、 temperature of stator and rotor winding;b temperature of thrust bearing and guide bearing;c temperature of inlet and outlet wind;d vibration of the rack;e electric spark at the bus rings;f Excitation data at the condition of no-load and on-load;Set the technical parameters according to relevant tec

15、hnical requirements.2 maintenance of generator The personnel of operation and maintenance of power station shall know and master the generators structure and performance,and shall have a certain professional level on the operation and maintenance of generator,so as to guarantee the normal running of

16、 the generator.The operator shall record the service data on time,if the following phenomenon occur,shall stop it and check:a vibrating and shaking abnormally;b there is knocking sound;c bearing temperature increasing suddenly,or oil level rising and lowering d discontinuance of cooling water;e temp

17、erature of the stator and the rotor rise too much;f There are abnormal oil mist,smog,empyreuma,etc.Keep the inside of the generator clean and dry,without dust,oil,water,etc.,so that can make the ventilation and elimination of heat of the motor easier,improve the insulation resistance,and prolong the

18、 operating life span of the motor.Wash periodically the oil tanks of upper and lower rack and the copper pipe cooler,and check if there is leakage,in order to guarantee safe operation.Take samples periodically and test the quality of lubricating oil.Check the pressure of collector rings,brush yokes

19、and electric brush periodically and observe the wearing condition of carbon brush and electric spark.Check the braking system regularly for air pressure,oil pressure and wearing condition of braking-shoe.Check all the connecting cables and joints periodically for looseness,poor contact,etc.causing o

20、verheating,rust,etc.The maintenance of stator includes:a check insulation resistance of stator coil regularly;b observe if there is heating at the ends of stator,looseness of the insulating parts,abnormal heating at the joints of stator,and deformation at the ends of winding;c if there is looseness

21、and abnormal noise of iron core of stator;d if there is looseness at slot wedge,loose weld between the pressed disc of stator and ventilation grid,etc.e If there are looseness of the fastening parts in the base,or loose weld between the pressed disc of stator and ventilation grid,etc.The maintenance

22、 of rotor includes:a check periodically if there is deformation of rotor,especially after runaway;b shall regularly check the insulation resistance of rotor winding to see if there is short-circuit.c check the damping bar and damping ring to see if there is loose weld and deformation.d check if ther

23、e are looseness of all the fastening parts at the rotating parts.e observe if the iron core of magnetic pole is loose,and if the coil of magnetic pole moved f check if the leading wire of rotor and leading wire between the poles of magnetic coil joint well and no loose.g observe regularly the inside

24、 of the rotor support,and the space between the laminations of magnetic yoke to avoid the entry of foreign matters.The maintenance of generator bearing includes:a Generally,the temperature of tungsten bearing bush shall be less than 650C,and the maximum temperature can not exceed 700C.The temperatur

25、e of hot oil in the plastic bearing bush can not exceed 500C,the temperature of the body of thrust bearing bush can not exceed 550C,during the running of generator,the value of resistance thermometer alarm and set stop value can be 10K15K and 15K20K higher than the normal running temperature respect

26、ively;and not to exceed the above mentioned value.b When start the generator in winter,the oil temperature in the oil tank can not be less than 100C.For the plastic bearing bush,start-up is allowed if the oil tank temperature is 50C and above.c If not in use for over 48h,before start the generator,p

27、ush the rotor upward to avoid dry friction and bush-burning.For plastic bush,the generator can be started directly without pushing the rotor within 30 days.d To switch off,in case of tungsten bearing bush,only when the rotating speed slows down to 20%30%of nominal speed,can the generator be braked o

28、ff,while in case of plastic bush,10%of nominal speed is allowable.During the normal running of the generator,generally,the personnel of operation and maintenance shall not enter the doors of upper and lower cover plate to avoid danger.Do not stop the generator if the braking system is abnormal.Durin

29、g maintenance of the generator,brake the rotor or push the rotor upward to avoid self-rotation caused by leakage of water.Clean the air cooler periodically to keep good exchange of heat.In winter,reduce cooling water appropriately according to the temperature rise to avoid moist on the cooling water pipe.All the automation components and metering devices of the generator shall be monitored and measured periodically.Pay attention to the alarm signal in order to handle them timely.All the spare parts shall be kept and stored well.