CHAPTER 3. RESULTS AND CHARACTERISTICS OF THE YEYWA AND

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40CHAPTER 3RESULTS AND CHARACTERISTICS OF THE YEYWA ANDTHEORETICAL DESIGNED HYDROGENERATORS3.1.Hydrogenerator (230 MVA) Basic DesignAs a first step, the hydrogenerator design with rated power 230 MVA will becalculated. It’s given technical data are shown in Table 3.1.Table 3.1. Technical Data of 230 MVA HydrogeneratorName of ParametersRatedValueUnitRated Capacity,rS230000kVARated Line Voltage,LV16kVRated Power Factor,cos0.85No. of Phase,m3Phase ConnectionY (Star)Rated Frequency,f50HzRated Speed,n142.9rpmInductive Reactance along the longitudinal axis,dx*0.76Damper Winding TypeComplete Longitudinal-transversalImplementationVertical SynchronousType with indirect air-cooling systemExcitationWith excitationFor the stator winding double-layered wave winding is chosen.504Z,p = 42and number of slots per pole per phase is fraction:41dcbq(b= 3,c= 1,d= 1).
41The winding consists of7t― the general largest common divisor. Thewinding table is made up by the following data:727504'tZZ3721'tpp41qTable 3.2. Stator Winding Table (230 MVA)Figure 3.1. Double Layered Wave Winding of Theoretical Designed Hydrogenerator(230 MVA)[72Z',3p',3m,4q,10y,14y2]No:of coilsin group444444444444444444No: of groupin alternation123456781234567812Coils no:123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172Distributionper phaseAZBXCYAZBXCYAZBXCY
42The results of the magnetic circuit calculation at no-load condition are shownin Table 3.3. Magneto motive force1,FFfandF, which are presented in the lastthree lines are calculated at28556fnFA. The characteristic (Full and Partial) andpartial magnetization characteristic at no-load are shown in Fig. 3.2 and Fig. 3.3.Table 3.3. Magnetic Circuit Theoretical Designed Calculation Results at No-loadCondition (230 MVA)zak11.0041.0741.0261.4791.87223fE0.511.1091.21.3PV, V9238''m1.4781.4471.3811.3241.256fk1.0381.0451.061.0741.092k1.0421.0431.0461.0481.051B, Т0.4680.931.0161.0851.157F, A12883255882795029859318301zB, Т1.0021.992.1732.3222.4751zH, A/m182109004521392806179060sh, m0.1531zF, A281668691814199273962zB, Т0.6581.3071.4281.5251.6262zH, A/m32010801590256045002zL, m0.0192zF, A6.0820.5230.2148.6485.51aB, Т0.6341.2691.411.5291.6611aH, A/m872613264146650.6220.4310.3650.3280.3011aF, A23.6649.20951.95559.44487.3921F, A129402732634949441665939910.00050.00610.00960.00020.00592
433zak'1.0041.0681.251.4791.866mB, Т0.7411.4991.7191.9372.235mH, A/m369227079502260064200mh, m0.3mF, A1116812385678019260mF, A1225507038561064fF, A13173285563803851801797232F, A23312313088763620324m, Wb0.6981.4131.621.8252.106, Wb0.5581.1171.2411.3460.462, Wb0.140.2960.3790.4790.644fxffFFF0.46111.3321.8142.792fxFFF110.4530.9571.2241.5472.08fxFFF0.4510.8960.9791.0461.115Figure 3.2.)*(),(),(1**FfFfFfEffat No-load Condition (230 MVA)
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