本论文针对电力系统元件保护程序，以发电机保护为例，利用MATLAB软件

本论文针对电力系统元件保护程序，以发电机保护为例，利用MATLAB软件对9MW风电机组接入系统进行仿真，该程序的主要功能为对电力系统网络进行短路计算，计算的结果通过前文所提到的保护整定依据进行判断，当判断为系统故障时，为避免电力系统元件受到损失，应立即切断该风电机组。图5-3中，仿真模型针对9MW风电场，利用STACOM对系统进行无功补偿，经过25kV母线后接入系统。<br>图5-5为电力系统元件保护仿真结果图，由于短路设置点处于风电机组出口侧，对应的风电机组在故障发生后进行跳闸保护，如图5.5中红线所示，其他两条支路的风电机组由于风电场内有功、无功的波动也会产生一个相应的波动，但经过一段时间后，恢复至原来水平，并不会因为短路故障的发生而进行相应的跳闸保护，其他风电机组继续保持运行，确保了在风电场内风电机组出口侧产生短路时，不会出现大范围的风电机组跳闸保护，确保了风电场安全稳定运行。

本论文针对电力系统元件保护程序，以发电机保护为例，利用MATLAB软件对9MW风电机组接入系统进行仿真，该程序的主要功能为对电力系统网络进行短路计算，计算的结果通过前文所提到的保护整定依据进行判断，当判断为系统故障时，为避免电力系统元件受到损失，应立即切断该风电机组。 图5-3中，仿真模型针对9MW风电场，利用STACOM对系统进行无功补偿，经过25kV母线后接入系统。<br>图5-5为电力系统元件保护仿真结果图，由于短路设置点处于风电机组出口侧，对应的风电机组在故障发生后进行跳闸保护，如图5.5中红线所示，其他两条支路的风电机组由于风电场内有功、无功的波动也会产生一个相应的波动，但经过一段时间后，恢复至原来水平，并不会因为短路故障的发生而进行相应的跳闸保护，其他风电机组继续保持运行， 确保了在风电场内风电机组出口侧产生短路时，不会出现大范围的风电机组跳闸保护，确保了风电场安全稳定运行。

In this paper, for the power system component protection program, taking generator protection as an example, using MATLAB software to simulate the access system of 9mw wind turbine. The main function of the program is to calculate the short circuit of the power system network. The calculation results are judged by the protection setting basis mentioned above. When it is judged as system fault, in order to avoid the loss of power system components The wind turbine should be cut off immediately. In Figure 5-3, the simulation model uses Stacom to compensate the reactive power of the system for 9mw wind farm, and it is connected to the system after passing through 25kV bus.<br>Figure 5-5 shows the simulation results of power system component protection. Since the short-circuit setting point is at the outlet side of the wind turbine, the corresponding wind turbine will trip after the fault occurs. As shown in the red line in Figure 5.5, the wind turbines of the other two branches will also have a corresponding fluctuation due to the fluctuation of active and reactive power in the wind farm, but after a period of time, it will return to the original level The corresponding trip protection will not be carried out due to the occurrence of short-circuit fault. Other wind turbines will continue to operate, which ensures that there will be no large-scale wind turbine trip protection when there is a short circuit at the outlet side of the wind turbine in the wind farm, so as to ensure the safe and stable operation of the wind farm.<br>