側刀閘、起勵電源開關是否均合上。然后再檢查是否有起勵電源，PT保險是否熔斷，PT回路的接線是否松動。

Whether the side knife switch and excitation power switch are all closed. Then check whether there is a build-up excitation power supply, whether the PT fuse is blown, and whether the wiring of the PT circuit is loose.

如果這些都正常，就需要另換一個通道起勵。如果能夠正常起勵了那么就說明是調節器通道內的原因;如果沼氣發電機組還是無法正常起勵，則應當檢查起勵回路、脈沖公共回路、可控硅整流器、轉子回路是否有接地或者短路等。

If all of these are normal, another channel is needed to make excitation. If the excitation can be started normally, it indicates that it is the reason in the channel of the regulator; if the biogas generator set is still unable to start excitation normally, check whether there is grounding or short circuit in the excitation circuit, pulse common circuit, silicon controlled rectifier and rotor circuit.

如果調節器沒有發出“起勵失敗”的信號，但沼氣發電機組仍然無法自動起勵，那么可以在勵磁盤附近起勵或者遠方人工起勵如果遠近方都無法人工起勵，應當檢查發電機組頻率是否沒有達到45HZ以上。

If the regulator doesn't send out the signal of "excitation failure", but the biogas generator set still can't start excitation automatically, then the excitation can be started near the excitation disk or the remote manual excitation can be started. If the manual excitation cannot be started in the far and near places, it should be checked whether the frequency of the generator set does not reach more than 45Hz.

如果沼氣發電機組勵磁裝置已有勵磁電流輸入發電機勵磁繞組，但機組仍然無法建壓成功，則應當考慮是否存在沼氣發電機組起勵電流不夠的問題，可適當調節起勵限流電阻，加大起勵電流進行試驗及檢查。

If the excitation current of the excitation device of the biogas generator has been input into the excitation winding of the generator, but the voltage build-up of the unit is still not successful, it should be considered whether the starting excitation current of the biogas generator is not enough. The starting excitation current limiting resistance can be appropriately adjusted and the starting excitation current can be increased for test and inspection.

一般來說，很多機器或者設備在平時運行的時候，都會產生一些聲音，這些大部分是機器零件間的碰撞所產生的聲音，但是對于柴油發電機組這個設備來說，在它工作的時候，有的時候會出現噪音，是什么樣的原因導致這個現象出現的呢。首先，噪音是由于空氣氣體與物體相互作用而產生的，造成大氣輻射的空氣動力噪音。空氣動力噪音一般包括進氣噪音，排氣噪音以及冷卻風扇噪音。

Generally speaking, many machines or equipment will produce some sounds when they are running, most of which are generated by the collision between machine parts. But for the diesel generator set, when it is working, sometimes there will be noise. What is the reason for this phenomenon. First of all, noise is due to the interaction between air and objects, resulting in the aerodynamic noise of atmospheric radiation. Aerodynamic noise generally includes intake noise, exhaust noise and cooling fan noise.

還有一種情況就是由發電機轉子在電磁場高速旋轉產生的電磁噪音，另外還要兩種就是燃燒噪音和機械噪音，這兩種很相似所以很難分辨。無論沼氣發電機組在運行的時候出現噪音的原因是什么，這個時候我們都需要及時的處理好，人士表示只有這樣才能更好的去使用這個機器哦。

Another case is the electromagnetic noise generated by the high-speed rotation of the generator rotor in the electromagnetic field. The other two are combustion noise and mechanical noise, which are very similar, so it is difficult to distinguish them. No matter what is the cause of the noise when the biogas generator set is running, we need to deal with it in time. Professionals say that only in this way can we better use the machine.