Fault Ride-Through Capability Assessment Technology
摘要
Due to the short duration of grid faults (typically tens to hundreds of milliseconds) and the relatively slow response time of renewable energy power plant control systems (generally in the order of seconds), the control systems cannot effectively function during fault events. Therefore, the fault ride-through (FRT) capability of renewable power plants primarily depends on the fault response characteristics of individual generation units. However, factors such as the number and type of generation units, the electrical architecture of the power generation system, the dynamic characteristics of FACTs, and the strength of the connected grid can affect overall performance. Even if generation units have low-voltage ride-through (LVRT) capability, the LVRT performance of the entire power plant may still fail to meet requirements. Thus, it is necessary to evaluate the overall LVRT capability of the renewable energy power plant.