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

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

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。

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.