基于实际工程及虚拟装置的直流输电控制保护模型设计方法

交直流大电网的仿真,要求高压/特高压直流输电控制保护模型功能完备、特性准确,同时期望模型有良好的仿真速度,为此提出了基于实际工程及虚拟装置的控制保护模型设计方法。首先,提出了控制保护模型逻辑结构的构成方法,说明了各层级虚拟装置的功能;然后说明了在电磁暂态仿真软件中实现虚拟装置的原理。以灵绍特高压直流工程为例,在多种电磁暂态仿真软件中分别构建了控制保护模型,并仿真验证了模型的精确性及并行计算能力。

Design Method of Control and Protection Model for DC Transmission Based on Actual Project and Virtual Device

The simulation of large AC/DC power grid requires that the control and protection model of HVDC/UHVDC transmission is fully functional and accurate, and expects that the model will have a good simulation speed. A design method of control and protection model is presented based on the actual project and virtual device. Firstly, a method for constructing the logical structure of control and protection model is proposed, and the function of each level of virtual device is illustrated. Then, the principle of implementing a virtual device in the electromagnetic transient simulation software is described. Taking Lingzhou-Shaoxing UHVDC project as an example, the control and protection model is built in a variety of electromagnetic transient simulation softwares. The simulation results verify the accuracy and parallel computing ability of the model.