Oil generator set is a power supply equipment that uses diesel engine as power to drive three-phase AC synchronous generator for power generation. When normal power supply cannot be realized or sudden power failure occurs, the diesel generator set can provide stable and reliable power. In some special occasions, such as the emergency power failure of the bank and the power relay station, it is not allowed to play a more important role in the backup of the power generation unit in the hospital. At present, it is widely used in field power supply, emergency power supply and backup power supply in many fields such as communication, mining, railway, hospital, finance, scientific research, road construction, industrial and agricultural production, urban construction and life.

目前，國(guó)內(nèi)使用柴油發(fā)電機(jī)組的功率范圍比較廣，小到0.5千瓦，大到幾千千瓦，據(jù)統(tǒng)計(jì)，國(guó)內(nèi)使用較多的機(jī)組有10kW、20kW、40kW、50kW、75kW、120kW和200kW等。機(jī)組的型號(hào)多種多樣，常用的有柴油發(fā)電機(jī)組，國(guó)產(chǎn)135系列柴油發(fā)電機(jī)組。

At present, the power range of diesel generator sets used in China is relatively wide, ranging from 0.5KW to thousands of kW. According to statistics, the units used more in China include 10kW, 20kW, 40kW, 50KW, 75kW, 120kw and 200kW. There are many types of units, including diesel generator sets and domestic 135 series diesel generator sets.

目前各行業(yè)對(duì)柴油發(fā)電機(jī)組的要求大致相同:操作簡(jiǎn)單，故障率低，能隨時(shí)起動(dòng)、及時(shí)供電，運(yùn)行可靠，油耗低，噪聲小，發(fā)電機(jī)的供電電壓和頻率應(yīng)能滿足用電設(shè)備的要求。若機(jī)組不能達(dá)到以上技術(shù)要求，將影響用電設(shè)備的正常工作。例如柴油機(jī)在工作中出現(xiàn)轉(zhuǎn)速不穩(wěn)定的故障時(shí)，發(fā)電機(jī)發(fā)出的電壓和頻率就會(huì)時(shí)高時(shí)低。這會(huì)造成許多問(wèn)題:通信部門(mén)使用的UPS會(huì)發(fā)出警報(bào)；照明燈會(huì)忽亮忽暗；郵電部門(mén)進(jìn)行電傳電報(bào)時(shí)，會(huì)引起變字和傳真圖像出現(xiàn)嚴(yán)重失真；電壓、頻率不穩(wěn)嚴(yán)重時(shí)會(huì)燒壞用電設(shè)備。為滿足各行業(yè)對(duì)柴油發(fā)電機(jī)組的技術(shù)要求，操作人員和維修技術(shù)人員掌握柴油發(fā)電機(jī)組的構(gòu)造、原理、性能和維修技術(shù)知識(shí)，熟練地操作使用、維護(hù)和修理柴油發(fā)電機(jī)組。

At present, the requirements of various industries for diesel generator sets are roughly the same: simple operation, low failure rate, starting at any time, timely power supply, reliable operation, low fuel consumption and low noise. The power supply voltage and frequency of the generator should meet the requirements of electrical equipment. If the unit fails to meet the above technical requirements, the normal operation of electrical equipment will be affected. For example, when the speed of the diesel engine is unstable during operation, the voltage and frequency sent by the generator will be high and low. This will cause many problems: the UPS used by the communication department will give an alarm; The lamp will flicker on and off; When the post and Telecommunications Department conducts telex and telegram, it will cause word change and serious distortion of fax image; When the voltage and frequency are unstable, the electrical equipment will be burned out. In order to meet the technical requirements of various industries for diesel generator sets, operators and maintenance technicians master the structure, principle, performance and maintenance technical knowledge of diesel generator sets, and skillfully operate, use, maintain and repair diesel generator sets.

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