一、發電質量好

1、 Good power generation quality

由于發電機工作時只有旋轉運動，電調反應速度快，工作特別平穩，發電機輸出電壓和頻率的精度高，波動小，在突加空減50%和75%負載時，機組集腋成裘駝行非常穩定。優于柴油發電機組的電氣性能指標。

Due to the fact that the generator only rotates during operation, the electric control system has a fast response speed and operates very smoothly. The accuracy of the generator's output voltage and frequency is high, with small fluctuations. When the load is suddenly reduced by 50% and 75%, the unit operates very stably. Superior electrical performance indicators compared to diesel generator sets.

二、啟動性能好，啟動成功率高

2、 Good startup performance and high success rate

從冷態啟動成功后到滿負載的時間僅為30秒鐘，而國際規定柴油發電機啟動成功后3分鐘帶負載。燃氣輪發電機組可以任何環境溫度和氣候下保證啟動的成功率。

The time from successful cold start to full load is only 30 seconds, while international regulations require diesel generators to be loaded for 3 minutes after successful start. Gas turbine generator sets can ensure the success rate of start-up under any environmental temperature and climate conditions.

三、噪聲低振動小

3、 Low noise and low vibration

由于燃汽輪機處于高速旋轉狀態，它的振動非常小，而且低頻噪聲優于柴油發電機組。

Due to the high-speed rotation of the gas turbine, its vibration is very small, and the low-frequency noise is better than that of the diesel generator set.

四、采用的可燃性氣體是清潔、廉價的能源

4、 The combustible gas used is a clean and inexpensive energy source

諸如：瓦斯氣，秸稈氣，沼氣等，以它們為燃料的發電機組不僅運行可靠，成本低，而且能變廢為寶，不會產生污染。

Generator sets fueled by gases such as methane, straw gas, biogas, etc. not only operate reliably and have low costs, but also turn waste into treasure without generating pollution.

發電機逆功率保護，用于保護汽輪機。當主汽門誤關閉或機爐保護動作關閉主汽門而發電機出口開關未跳閘時，發電機變成電動機運行狀態，此時發電機從系統吸收有功和無功，這種工況對發電機并無影響但由于鼓風損失，氣輪機尾部葉片有可能過熱，損壞尾部葉片而造成汽輪機事故。因此大機組不允許在這種工況下長時間運行，允許運行幾分鐘。

Generator reverse power protection, used to protect the turbine. When the main steam valve is accidentally closed or the boiler protection action closes the main steam valve but the generator outlet switch does not trip, the generator enters the motor operation state. At this time, the generator absorbs active and reactive power from the system. This condition has no effect on the generator, but due to the loss of air blowing, the tail blades of the turbine may overheat and damage the tail blades, causing a turbine accident. Therefore, large units are not allowed to operate for a long time under such conditions, and are allowed to operate for a few minutes.

我國自行設計的發電機，以往不裝設逆功率保護，但采取以下措施：

Our country's self-designed generators were not equipped with reverse power protection in the past, but the following measures were taken:

采用聯鎖方法。當主汽門關閉后，用主汽門輔助接點，經延時切除發電機。上述方法雖然可行，但有不足之處，因為都不能正確地反映主汽門關閉情況。為了及時發現逆功率的異常工況，歐洲一些國家在發電機上配置有逆功率保護。逆功率保護其核心元件是逆功率繼電器。逆功率繼電器和功率方向繼電器相似，只是在功率方向相反時動作，及時發出信號或延時動作切機。

Adopt interlocking method. After the main steam valve is closed, use the auxiliary contact of the main steam valve to cut off the generator after a delay. Although the above methods are feasible, they have limitations as they cannot accurately reflect the closure of the main steam valve. In order to detect abnormal working conditions of reverse power in a timely manner, some European countries have installed reverse power protection on generators. The core component of reverse power protection is the reverse power relay. Reverse power relay is similar to power direction relay, except that it operates when the power direction is opposite, promptly sending a signal or delaying the action to switch off the machine.

主汽門關閉后，在控制室內發信號，如主汽門誤關閉，檢查之后可迅速恢復供汽，使機組正常運行，如幾分鐘恢復不了，可由值班員斷開發電機出口開關。

After the main steam valve is closed, a signal is sent in the control room. If the main steam valve is accidentally closed, the steam supply can be quickly restored after inspection to ensure normal operation of the unit. If it cannot be restored in a few minutes, the duty officer can disconnect the generator outlet switch.

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