燃气发电机组的应用比较广泛，不同的应用场景下发电机组运行模式也有所区别。下面就来讲讲燃气发电机组的运行模式及特点，希望能您好的帮助。

Gas turbine generator sets are widely used, and their operation modes are different in different application scenarios. Now let's talk about the operation mode and characteristics of the gas generator set. I hope you can help me.

1并网运行

1 Grid connected operation

并网运行定义：分布式能源系统发电机组与公共电网在用户端并列运行，并向公共电网输送电能的方式。

Definition of grid connection operation: the way in which the generator units of the distributed energy system operate in parallel with the public grid at the user end and transmit electric energy to the public grid.

并网运行是为常见的运行模式，对于发电机组而言也是为简单的运行模式。在并网运行模式下，发电机组需要通过电网状态监测装置，实时监测电网状态。一旦电网发生故障，例如突然失电，监测装置迅速给出信号，发电机组控制系统立即断开出口断路器，切断与电网的联系。在这种模式下，发电机组与电网断开后即进入停机程序。

Grid connected operation is a common operation mode, and also a simple operation mode for generator sets. Under the grid connected operation mode, the generator unit needs to monitor the grid status in real time through the grid status monitoring device. Once the power grid fails, such as sudden power loss, the monitoring device will quickly send a signal, and the generator set control system will immediately disconnect the outlet circuit breaker and cut off the connection with the power grid. In this mode, the generator set will enter the shutdown procedure after being disconnected from the grid.

2孤岛运行（孤网运行）

2 Island operation (isolated network operation)

孤岛运行定义：分布式能源系统发电机组与公共大电网完全脱开独立运行的方式。

Definition of isolated island operation: the mode of independent operation of distributed energy system generator units completely separated from the public power grid.

在孤岛运行模式下，燃气发电机组没有电网的支撑，完全由自身提供负荷所需电能。发电机组的带载性能决定了所能承载的负荷大小以及波动。ISO8528-5规定了G1-G4四个类别，分别对应不同的负荷种类和级别。发电机组厂商根据ISO8528-5的定义，给出了机组在相应的等级下大能承受的负荷情况。

In the island operation mode, the gas generator unit is not supported by the power grid, and the power required by the load is completely provided by itself. The load performance of generator sets determines the load that can be carried and its fluctuation. ISO8528-5 specifies four categories G1-G4, which correspond to different load categories and levels. According to the definition of ISO8528-5, the generator set manufacturer gives the load that the unit can bear under the corresponding level.

并网不上网

Grid connected but not connected

由于各种原因，许多天然气分布式能源项目无法向电网输出电力，或者因经济性不佳而有意不向电网输出电力，这种即为并网不上网模式。但是发电机组仍然与电网连接，当发电机组功率比负荷小时，剩余电能由电网补充。在并网不上网模式下，一般由发电机组充当主用电源，电网作为备用电源。

For various reasons, many natural gas distributed energy projects are unable to output power to the grid, or intentionally do not output power to the grid due to poor economy. This is the grid connected non grid mode. However, the generator set is still connected to the grid. When the power of the generator set is smaller than the load, the remaining electric energy is supplemented by the grid. In the mode of grid connection without grid connection, the generator set is generally used as the main power supply and the grid is used as the standby power supply.

并网和孤岛自动切换

Grid connection and island automatic switching

有些情况下，机组需要在并网和孤岛模式间进行切换。当电网正常时，机组运行在并网模式。网电故障发生时，机组自动切换到孤岛模式，机组保持持续运行不停机。

In some cases, the unit needs to switch between grid connection and island mode. When the power grid is normal, the unit operates in grid connection mode. In case of grid power failure, the unit will automatically switch to island mode, and the unit will maintain continuous operation without shutdown.

这时需要注意的是，如果负荷高于发电机组的输出功率，就需要切断部分负荷。机组控制系统能够根据负荷大小自动发出指令，在负荷即将超过额定功率时立即切断部分负荷。在设，需要综合考虑负荷的优先顺序，把非关键负荷与关键负荷区别处理。

At this time, it should be noted that if the load is higher than the output power of the generator set, it is necessary to cut off part of the load. The unit control system can automatically send instructions according to the load size, and cut off part of the load immediately when the load is about to exceed the rated power. In the design, it is necessary to comprehensively consider the priority of loads and treat non critical loads and critical loads differently.

总之呢，燃气发电机组的控制模式由用户的需求决定，在具体的控制系统功能的实现上，厂家根据机组数量，电气连接方式，以及运行方式等配置不同的功能模块或者控制柜。如有必要，现有的机组也可以进行改造，增减相应的配置。更多的相关内容就来我们网站//www.gz-yanye.com进行咨询吧！

In a word, the control mode of the gas generator set is determined by the user's needs. In terms of the realization of specific control system functions, the manufacturer configures different functional modules or control cabinets according to the number of units, electrical connection mode, and operation mode. If necessary, the existing units can also be modified to increase or decrease the corresponding configuration. More relevant content will come to our website //www.gz-yanye.com Consult!