一、發(fā)電質(zhì)量好
1、 Good power generation quality
由于發(fā)電機(jī)工作時只有旋轉(zhuǎn)運(yùn)動，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，波動小，在突加空減50%和75%負(fù)載時，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)。
Because the generator only rotates when it works, the electric regulation reaction speed is fast, and the work is particularly stable. The accuracy of the generator output voltage and frequency is high, and the fluctuation is small. When the sudden air load is reduced by 50% and 75%, the unit is very stable. Better than the electrical performance index of diesel generator set.
二、啟動性能好，啟動成功率高
2、 Good startup performance and high startup success rate
從冷態(tài)啟動成功后到滿負(fù)載的時間僅為30秒鐘，而規(guī)定柴油發(fā)電機(jī)啟動成功后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的成功率。
The time from successful cold start to full load is only 30 seconds, while the international regulations stipulate that the diesel generator will be loaded 3 minutes after successful start. The gas turbine generator set can ensure the success rate of startup under any ambient temperature and climate.
三、噪聲低振動小
3、 Low noise and vibration
由于燃汽輪機(jī)處于高速旋轉(zhuǎn)狀態(tài)，它的振動非常小，而且低頻噪聲優(yōu)于柴油發(fā)電機(jī)組。
Because the gas turbine is in the state of high-speed rotation, its vibration is very small, and the low-frequency noise is better than that of 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 clean and cheap energy
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，不會產(chǎn)生污染。
Such as gas, straw gas, biogas, etc. the generator set fueled by them not only operates reliably and has low cost, but also can turn waste into treasure without 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)動作關(guān)閉主汽門而發(fā)電機(jī)出口開關(guān)未跳閘時，發(fā)電機(jī)變成電動機(jī)運(yùn)行狀態(tài)，此時發(fā)電機(jī)從系統(tǒng)吸收有功和無功，這種工況對發(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間運(yùn)行，只允許運(yùn)行幾分鐘。
The generator reverse power protection is used to protect the turbine. When the main throttle valve is closed by mistake or the turbine boiler protection action closes the main throttle valve and the generator outlet switch does not trip, the generator becomes the motor running state. At this time, the generator absorbs active and reactive power from the system. This working condition has no impact on the generator, but due to the loss of blast, the tail blades of the gas turbine may overheat and damage the tail blades, resulting in turbine accidents. Therefore, large units are not allowed to operate for a long time under this condition, only for a few minutes.
我國自行設(shè)計的發(fā)電機(jī)，以往不裝設(shè)逆功率保護(hù)，但采取以下措施：
In the past, generators designed by our country were not equipped with reverse power protection, but the following measures were taken:
(1)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動作，及時發(fā)出信號或延時動作切機(jī)。
(1) Adopt interlocking method. When the main throttle valve is closed, use the auxiliary contact of the main throttle valve to cut off the generator after time delay. Although the above methods are feasible, they have shortcomings, because they can not correctly reflect the closure of the main throttle valve. In order to find the abnormal working conditions of reverse power in time, some European countries have configured reverse power protection on generators. The core component of reverse power protection is reverse power relay. The reverse power relay is similar to the power direction relay, but it acts when the power direction is opposite, sending a signal in time or delaying the action to cut off the machine.
(2)主汽門關(guān)閉后，在控制室內(nèi)發(fā)信號，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)。
(2) After the main throttle valve is closed, send a signal in the control room. If the main throttle valve is closed by mistake, the steam supply can be quickly restored after inspection to make the unit operate normally. If it cannot be restored in a few minutes, the operator on duty can turn off the outlet switch of the generator.
The above is a detailed introduction to the accessories of gas generator set. I hope it will help you If you have any questions, please contact us We will provide you with professional service http://nkqm.com.cn
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