Mai yadda aiki da DC Generators na hanyar Parallel Operation?

Mai wani shi ne Parallel Operation of DC Generators?

Takaitaccen tasiri da ake amfani da ita a cikin Parallel Operation of DC generator

A cikin tashar zabe-zabanci na zaman, an yi aiki da kowane mutanen zabe-zabanci da suka dace don in ba suka da yake aiki. An yi aiki da wani mutanen zabe-zabanci mai gaba ta baya. Amfani da biyu na mutanen zabe-zabanci da suka dace ya tabbata su a matsayin mafi girma. Idon kawo armature currents da kuma idon kofar da su a kan bus bars zai iya haɗa da amsa a nan.

Kofar da bus bar

An kofar da mutanen zabe-zabanci a cikin power plants da kafuwar copper bars, sunan busbars, wadanda suka yi aiki a matsayin positive da negative electrodes. Don in kofar da generator, kofar da terminalin positive na generator zuwa terminalin positive na bus, da kuma kofar da terminalin negative na generator zuwa terminalin negative na bus, kamar yadda aka bayyana a cikin figure.

Don in kofar da generator na biyu zuwa generator na farko, karkashin fanni a sakiyar prime mover na generator na biyu zuwa sakiyar da ake bayar. Daga baka, kofar da switch S4.

Circuit breaker V2 (voltmeter) an kofar da shi zuwa open switch S 2 close to complete the circuit. An yi aiki da field rheostat don in kara excitation na generator 2 har zuwa lokacin da yake sarrafa voltage mai kusa da bus voltage.

Daga baka, kofar da main switch S2 don in kofar da generator na biyu zuwa generator na farko. A wannan lokaci, generator 2 ba a yi aiki saboda induced electromotive force na yake kusa da bus voltage. Wannan halaye sunan "floating," wadanda yana nufin cewa generator an yi rashin aiki amma ba a yi aiki.

Don in kawo current daga generator 2, induced e.m.f. E ya fi sanar da bus voltage V. Tun kara excitation current, za a iya kara induced electromotive force na generator 2 da kuma kawo supply current. Don in daidaita bus voltage, magnetic field na generator 1 za a iya kare kuma value yana daidaita.

Field current I an yi da R

Distribution of load

Idon kawo induced electromotive force, an yi aiki da distribution of load, amma a cikin power plants na zaman, duka shi an yi aiki da "sychroscope," wadanda ke yi aiki da governor na prime mover. Za a iya iya sama cewa biyu na mutanen zabe-zabanci suna da voltages masu adadin. Daga baka, distribution of load da kowane generator zai zama output da current depending on the value of E 1 and E3 wadanda za a iya kara ta da field rheostat don in daidaita bus voltage.

Faifai

Smooth power supply: Idan generator ya jawo, ba za a faruwa power supply. Idan wani generator ya jawo, za a iya daidaita power supply da generators da suka dace.

Easy maintenance:Routine maintenance of the generator is needed from time to time. But for that, the power supply must not be impeded. In parallel generators, routine checks can be carried out one by one.

Easy to increase factory capacity: Electricity demand is increasing. To meet the needs of power generation, additional new units can be operated in parallel with operating units.

Abubuwan da suka bukata

• Specifications of each generator are different. When they are synchronized together, their speed is locked into the overall speed of the system.

• The full load of the system should be distributed among all the generators.

• There should be a controller to check the engine's parameters. This can be done with modern digital controllers available on the market.

• Voltage regulation plays an important role in the whole system. If the voltage of one unit drops, it ends up bearing the entire voltage load of the shunt generator system compared to the other units.

• Extra precautions should be taken when connecting terminals to bus bars. If the generator is connected to the wrong rod polarity, it may cause a short circuit.