一、發(fā)電質(zhì)量好

1、 Good power generation quality

由于發(fā)電機(jī)工作時(shí)只有旋轉(zhuǎn)運(yùn)動(dòng)，電調(diào)反應(yīng)速度快，工作特別平穩(wěn)，發(fā)電機(jī)輸出電壓和頻率的精度高，波動(dòng)小，在突加空減50%和75%負(fù)載時(shí)，機(jī)組集腋成裘駝行非常穩(wěn)定。優(yōu)于柴油發(fā)電機(jī)組的電氣性能指標(biāo)。

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(dòng)性能好，啟動(dòng)成功率高

2、 Good startup performance and high success rate

從冷態(tài)啟動(dòng)成功后到滿負(fù)載的時(shí)間僅為30秒鐘，而國際規(guī)定柴油發(fā)電機(jī)啟動(dòng)成功后3分鐘帶負(fù)載。燃?xì)廨啺l(fā)電機(jī)組可以任何環(huán)境溫度和氣候下保證啟動(dòng)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(dòng)小

3、 Low noise and low vibration

由于燃汽輪機(jī)處于高速旋轉(zhuǎn)狀態(tài)，它的振動(dòng)非常小，而且低頻噪聲優(yōu)于柴油發(fā)電機(jī)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(jià)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?yōu)槿剂系陌l(fā)電機(jī)組不僅運(yùn)行可靠，成本低，而且能變廢為寶，不會(huì)產(chǎn)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(fā)電機(jī)逆功率保護(hù)，用于保護(hù)汽輪機(jī)。當(dāng)主汽門誤關(guān)閉或機(jī)爐保護(hù)動(dòng)作關(guān)閉主汽門而發(fā)電機(jī)出口開關(guān)未跳閘時(shí)，發(fā)電機(jī)變成電動(dòng)機(jī)運(yùn)行狀態(tài)，此時(shí)發(fā)電機(jī)從系統(tǒng)吸收有功和無功，這種工況對(duì)發(fā)電機(jī)并無影響但由于鼓風(fēng)損失，氣輪機(jī)尾部葉片有可能過熱，損壞尾部葉片而造成汽輪機(jī)事故。因此大機(jī)組不允許在這種工況下長時(shí)間運(yùn)行，允許運(yùn)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(shè)計(jì)的發(fā)電機(jī)，以往不裝設(shè)逆功率保護(hù)，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(lián)鎖方法。當(dāng)主汽門關(guān)閉后，用主汽門輔助接點(diǎn)，經(jīng)延時(shí)切除發(fā)電機(jī)。上述方法雖然可行，但有不足之處，因?yàn)槎疾荒苷_地反映主汽門關(guān)閉情況。為了及時(shí)發(fā)現(xiàn)逆功率的異常工況，歐洲一些國家在發(fā)電機(jī)上配置有逆功率保護(hù)。逆功率保護(hù)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(shí)動(dòng)作，及時(shí)發(fā)出信號(hào)或延時(shí)動(dòng)作切機(jī)。

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(guān)閉后，在控制室內(nèi)發(fā)信號(hào)，如主汽門誤關(guān)閉，檢查之后可迅速恢復(fù)供汽，使機(jī)組正常運(yùn)行，如幾分鐘恢復(fù)不了，可由值班員斷開發(fā)電機(jī)出口開關(guān)。

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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