用牛顿-拉夫逊算法求解线路中的潮流运算，能够求解各节点电压降，线路网络损耗-Newton- Raphson algorithm for computing the trend line, each node can solve the voltage drop line network losses

低电压穿越时的检测装置，确定电压的跌落深度，并及时恢复-LVRT when the detection device to determine the depth of the voltage drop, and timely recovery

电网发生三相对称故障时，基于dq变化法的电压跌落检测-Symmetrical three-phase power grid failure, the voltage drop dq transform method based on the detection

电力系统中元件电压降落分析。得到不同负荷下首端和末端的电压、电流相量。-Analysis of component voltage drop in power system. The voltage and current phasors at the first and the end under different loads are obtained.

基于MATLAB中的Simulink模块中的双馈风机仿真示例，在此基础上重新设定合理的风机、配网及大电网的参数，设计加入四分量叠加法的风速模型。同时设计了110KV电网电压突然下降，在风电场并网点选择不同模式下的仿真结果分析和35KV配网发生三相短路故障时的风电机组输出特性仿真(Based on the simulation example of the doubly fed fan in the Simulink module in MATLAB, the parameters of the