基于PSCAD/EMTDC的HVDC换流器触发控制建模仿真

Modeling and Simulation of HVDC Converter Firing Control Based on PSCAD/EMTDC

摘要:

为准确分析高压直流输电( HVDC) 的动态行为，针对PSCAD/EMTDC 软件自带的换流器元件全封装导致仿真 灵活性降低的问题，搭建了较详细的换流器触发控制模型。以自定义元件为基础，实现了目前工程广泛采用的等相 位间隔触发控制。仿真分析了控制环节的响应特性，并将触发控制模型引入HVDC 系统模型，对比仿真结果与工程 实际录波，验证了所建模型的准确性。

Abstract:

In order to accurately analyze the dynamic behavior of high voltage direct current ( HVDC) and solve the problem that the full package of converter components in PSCAD/EMTDC software reduces the flexibility of simulation，a detailed converter firing control model is established． Based on custom component，the control of evenly spacing in phase which is widely adopted by actual HVDC transmission project is implemented in the firing control． The response characteristics of the control aspects are analyzed． The converter firing control is applied to HVDC model，and the simulation results are compared with the recorded field commissioning curves of HVDC transmission project． The comparison results show that the accuracy of the proposed control model is satisfied．