光伏逆变器高、低电压穿越控制参数辨识方法

A Control Parameter Identification Method of High and Low Voltage Ride-through of Photovoltaic Inverter

基于控制器硬件在环仿真测试平台,能够便捷、真实、有效的测量光伏逆变器高、低电压穿越控制参数,为光伏电站的机电暂态和电磁暂态仿真建模提供关键数据支撑。针对人工开展控制参数辨识效率低的现象,归纳总结了控制参数辨识步骤及典型测试项目,并设计了一种高效的控制参数自动化辨识计算方法。基于RTDS搭建了光伏逆变器控制器硬件在环仿真测试平台,并开展低电压穿越测试对所设计的方法进行验证,结果表明该方法是有效、可行的,对相关测试人员具有一定的参考价值。

Based on the hardware-in-the-loop simulation test platform of controller, the high and low voltage ride-through control parameters of photovoltaic inverter can be conveniently, truly and effectively measured, which provides key data support for the electromechanical transient and electromagnetic transient simulation modeling of photovoltaic power station. Aiming at the low efficiency of manual control parameter identification, the control parameter identification steps and typical test items are summarized, and an efficient automatic control parameter identification and calculation method is designed. A hardware-in-the-loop simulation test platform of photovoltaic inverter controller is built based on RTDS and the low voltage ride-through test is carried out to verify the design method. The results show that the method is effective and feasible, which provides some reference value for relevant testers.