Design method for insulation service life of turbine generator stator winding and its appraising method
A turbogenerator, stator winding technology, applied in the manufacture of motor generators, electric components, calculations, etc., can solve the design calculation, quantitative evaluation and improvement of turbogenerator stator windings that are not suitable, large working current, stator The problem of high rated voltage of windings can achieve the effect of prolonging the life of class F insulation of generator stator windings and reducing the cumulative life loss
Active Publication Date: 2008-02-27
SHANGHAI POWER EQUIP RES INST
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[0002] The service life of the generator is related to the insulation life of the generator winding. Due to the high rated voltage and large operating current of the stator winding, the insulation life of the stator winding has become the weak link of the insulation life of the generator winding. The design of the existing turbogenerator method, the efficiency of the turbogenerator can be determined in the design stage, but the design value of the stator insulation life of the turbogenerator cannot be quantitatively calculated in the design stage
Most of the stator windings of high-power turbogenerators use F-class insulation. The life of F-class insulation of turbogenerator stator windings is related to two main factors: thermal aging and electrical aging. At present, F-class insulation of turbogenerator stator windings is There is no suitable method for life design calculation, quantitative evaluation and improvement
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[0048] As shown in Fig. 1, it is the flow chart of the method adopted in the present invention; As shown in Fig. 2, it is the computer software block diagram of the F-class insulation life design prediction of the stator winding of the turbogenerator that adopts C language to write, is installed in the turbogenerator On the computer of the design or research department of the machine manufacturing industry, the design method of the F-class insulation life of the turbogenerator stator winding provided by the invention is suitable for the design and evaluation of the F-class insulation life of the turbogenerator stator winding with a power of more than 300MW .
[0049]A certain type of 600MW turbogenerator supporting supercritical and ultra-supercritical 600MW units, rated power 600MW, rated capacity 667MVA, rated power factor cosφ=0.9, generator efficiency η=98.8%, stator winding adopts class F insulation and water Cold, use the flow chart of insulation life design and evaluati...
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This invention relates to the method for the design and evaluation of a steam turbogenerator stator winding insulation life (SWIL). The characteristics are: the soft-ware for the design of F-grade SWIL programmed by C-language is installed in a computer of the design and research department of a steam turbogenerator producer. The evaluation procedures are: determining the desired value of the generator service life, calculating the thermal aging SWIL, calculating the electric aging SWIL, calculating the accumulated loss of the thermal aging SWIL, determining the boundary value Dco the said accumulated loss, and finally proceeding this inventive design and evaluation. The advantages are: quantitative forecasting, quantitative evaluation and improvement of F-grade SWIL, meeting the technical requirement of 40 years life.
Description
technical field [0001] The invention relates to a design method and an evaluation method for the insulation life of a stator winding of a turbogenerator, which is suitable for the design and evaluation of the F-level insulation life of a stator winding of a turbogenerator with a power of more than 300 MW, and belongs to the technical field of the turbogenerator . Background technique [0002] The service life of the generator is related to the insulation life of the generator winding. Due to the high rated voltage and large operating current of the stator winding, the insulation life of the stator winding has become the weak link of the insulation life of the generator winding. The design of the existing turbogenerator method, the efficiency of the turbogenerator can be determined in the design stage, but the design value of the stator insulation life of the turbogenerator cannot be quantitatively calculated in the design stage. Most of the stator windings of high-power tur...
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Inventor 史进渊杨宇邓志成孙庆顾华年
Owner SHANGHAI POWER EQUIP RES INST
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