一、发电质量好

1、 Good power generation quality

由于发电机工作时只有旋转运动，电调反应速度快，工作特别平稳，发电机输出电压和频率的精度高，波动小，在突加空减50%和75%负载时，机组集腋成裘驼行非常稳定。优于柴油发电机组的电气性能指标。

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、启动性能好，启动成功率高

2、 Good startup performance and high success rate

从冷态启动成功后到满负载的时间仅为30秒钟，而国际规定柴油发电机启动成功后3分钟带负载。燃气轮发电机组可以任何环境温度和气候下保证启动的成功率。

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、噪声低振动小

3、 Low noise and low vibration

由于燃汽轮机处于高速旋转状态，它的振动非常小，而且低频噪声优于柴油发电机组。

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、采用的可燃性气体是清洁、廉价的能源

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

诸如：瓦斯气，秸秆气，沼气等，以它们为燃料的发电机组不仅运行可靠，成本低，而且能变废为宝，不会产生污染。

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.

发电机逆功率保护，用于保护汽轮机。当主汽门误关闭或机炉保护动作关闭主汽门而发电机出口开关未跳闸时，发电机变成电动机运行状态，此时发电机从系统吸收有功和无功，这种工况对发电机并无影响但由于鼓风损失，气轮机尾部叶片有可能过热，损坏尾部叶片而造成汽轮机事故。因此大机组不允许在这种工况下长时间运行，允许运行几分钟。

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.

我国自行设计的发电机，以往不装设逆功率保护，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:

采用联锁方法。当主汽门关闭后，用主汽门辅助接点，经延时切除发电机。上述方法虽然可行，但有不足之处，因为都不能正确地反映主汽门关闭情况。为了及时发现逆功率的异常工况，欧洲一些国家在发电机上配置有逆功率保护。逆功率保护其核心元件是逆功率继电器。逆功率继电器和功率方向继电器相似，只是在功率方向相反时动作，及时发出信号或延时动作切机。

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.

主汽门关闭后，在控制室内发信号，如主汽门误关闭，检查之后可迅速恢复供汽，使机组正常运行，如几分钟恢复不了，可由值班员断开发电机出口开关。

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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