方仍存,雷何,杨东俊,孙建军,黄萌.延时影响下智能软开关控制器硬件在环测试准确性分析[J].电测与仪表,2024,61(10):153-160. Fang Rengcun,Lei He,Yang Dongjun,Sun Jianjun,Huang Meng.Accuracy analysis of controller hardware-in-the-loop test for soft open point considering the influence of delay[J].Electrical Measurement & Instrumentation,2024,61(10):153-160.
延时影响下智能软开关控制器硬件在环测试准确性分析
Accuracy analysis of controller hardware-in-the-loop test for soft open point considering the influence of delay
The soft open point is a power electronic device that can realize the flexible adjustment of the distribution network. It usually adopts the controller hardware-in-the-loop platform technology to achieve diversified functional verification requirements. However, the inherent interface delay of controller hardware-in-the-loop will reduce the power angle dynamic accuracy of the transient stability test, which causes the test results are different with the actual system response. In this paper, the controller hardware-in-the-loop test system of soft open point is designed firstly, a time-domain mathematical model of the test system is established, and the influence of the delay process on the accuracy of the system transient stability test is analyzed. Then, the transient stability-based equal area criterion is used to quantify the influence of the delay on the accuracy of the simulation system. Based on the accuracy and simulation scale of the simulation system, the optimal selection and design of parameters for the interface delay is explored. Finally, the correctness of the theoretical analysis is verified by RT-LAB-based controller hardware-in-the-loop test system.
