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PUSAT LATIHAN TEKNOLOGI TINGGI (ADTEC)SEKSYEN 34 SHAH ALAMPENJAGA JENTERA ELEKTRIK

INSTRUCTION / OPERATION MANUALPOWER SYNCHRONISATION OF GENERATOR NO.2 WITH(TNB) NETWORK1.0 INTRODUCTION1.1 This unit is specially developed and constructed for use in electrical. teachinglaboratory to demonstrate the basic principles of and procedures in power synchronization.The following are the possibilities : Generator No. 1 with Network (TNB) Generator No. 2 with Network (TNB) . Generator No. 1 with Generator No.2 Generator No. 1 & No.2 with Network (TNB)1.2 Unit is portable and is used as a desk-top model. I t is provided with a sloping frontstudy panel. On this sloping surface are mounted the meters and control components with theirterminations and mimic diagram neatly and didactically arranged. All control components areconveiniently located and within easy reach.

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4.0 POWER REQUIREMENTS4. I Network (TNB) Power source from TNB is the form of a three phase fixed or variable power supply unit, adequately protected and terminated at terminal sockets I posts with an output of 240/415VAC or 0-240/415 VAC, 20A, 3 phase, 50Hz which is conveniently located, should be sufficient to meet the requirement. 4.2 Generator No.1 / Generator No.2 Power source from both Generators are normally obtained from experimental synchronous alternator sets. These sets are usually DC motor driven and therefore the speed can be easily and effectively controlled. The output voltage and frequency of the alternator can also be conveniently and effectively adjusted to any desired level via the DC field excitation. 5.0 COMMISSIONING Norminal commissioning is required for this unit. Operating manual is of sufficient guide in most cases. However, should any formal commissioning be required, our engineering personnel shall' undertake to brief instructorsllecturers on the unit features and the proper operating procedures. (J 6.0 MAINTENANCE Practically no maintenance is necessary for this unit except that unit should be shielded from dust and dirt. 7.0 COMPONENTS DESIGNATIONSFor components designations, please refer to study panel layout plan as show in 7.1. Internal

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8.7 Compare the voltages and frequencies of the two power sources.8.8 Observe the operation of the synchronizing lamps. They should operate in unison ie. Allthree lamps should light up or dark out simultaneously. If the lamps are operating in steps(sim ilar to running lights) it indicates that the sequence I rotation of the two power sources arenot correct or in phase. In which case inter-change any two leads of either the input from TNB orthe output from generator No.2 such that the synchronising lamps operate in unison.8.9 The conditions necessary to synchronise two power sources to operate in parallel are asfollows :- . Phase sequence I rotation must be the same. Terminal voltage must be the same. Frequencies ofboth voltages must be approximately the same. Phase angle must be the same8: 10 When all the above Four conditions are in order, observe the pointer movement ofthe synchronoscope. Adjust the speed of the driving motor for the Generator No.1 until thepointer movement is as slow as possible. When the pointer of the synchronoscope pointsvertically up (i.e. at 12.00 o/clock with the pointer coming in frqm the negative side)., that isthe precise and appropriate moment for the two power sources to be synchronizedtogether. At that particular moment, switch to "On" position the synchronizing circuit breaker(CBI).8 11 Switch to "On" positions the loads which are connected to the Network bus-bars.8.12 Gradually adjust the prime mover of Generator No.2 to increase its load contribution tothe Network.8.13 To shut-down, just reverse the operating procedures as outlined above.

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INSTITUT LATIHAN JABATAN TENAGA MANUSIAKEMENTERIAN SUMBER MANUSIAPUSAT LATIHAN TEKNOLOGI TINGGI (ADTEC)SHAHALAM

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13. Periksa samada frekuensi dan voltan janakuasa No.2 sam a atau tidak dengan frekuensi dan voltan janakuasa No.1 atau basbar (line, system). Jika tidak laraskan pelaras (trimer) supaya frekuensi dan voltan menjadi sama. 14. Lihat pada sinkroskop dimana lampu gelap atau lampu cerah semasa sudut fasa voltanjanakuasa No.2 sama atau tidak dengan janakuasa No.1 atau dibasbar. Kedua-dua sudutfasa dan voltan akan sama hanya apabila jarum sinkroskop menunjukkan pukul 12 atau lampupenunjuk menjadi paling gelap untuk cara lampu gelap.15. Apabila jarum menunjukkan hampir-hampir pukul 12, tutup pemutus litar udara bagi litar janakuasa No.2. Pemutus litar No.2 ditutup pada masa jarum berada hampir pada pukul

12 bagi mengambil kira masa lengah tindakbalas mengendalikan pemutus litar membuat penyegerakan. 16. Buka salah satu suis neutral bagi mengelakkan arus legar. Sekiranya Janakauasa

No.2 berkeupayaan lebih besar daripada Janakuasa No.1 hendaklah membuka suis neutral di Pemutus Litar No.1. ,,17. Buka suis sinkroskop janakuasa No.2 dan janakuasa No.1.J18. Laraskan pelaras frekuensi supaya janakuasa No.2 berkongsi beban dengan janakuasa No.1secara sama rata. Apabila pelaras (trimer) frekuensi dinaikkan, kuasa bekalan kW janakuasaakan naik.19. Janakuasa No.1 dan No.2 telah selesai menjalani kendalian penyegerakan dan naikkan frekuensi beban mengikut keperluan pengguna. 20. Sambung tambahan beban yang diperlukan berperingkat-peringkat sehingga beban maksimayang boleh ditanggung oleh janakuasa No.1 dan janakuasa No.221. Prosedur menghentikan janakuasa. Tentukan janakuasa yang hendah dihentikan, (Janakuasa

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