新一代特高压交直流电网仿真平台设计方案

New Generation UHVAC/DC Power Grid Simulation Platform Design Scheme

随着特高压交、直流工程的不断投运,我国逐渐形成了一个交、直流紧密耦合,多直流、多交流相互影响,送受端不断一体化,运行控制复杂多变的大规模特高压交、直流混合电网。为保证上述电网的安全稳定运行,必须对其运行特性进行研究和仿真分析。大规模特高压交、直流电网对仿真的规模、精度和速度均提出了更高的要求,目前为止,已有的仿真工具均不能同时满足其仿真的精度与效率需求。鉴于此,此文提出新一代特高压交直流电网仿真平台(new generation UHVAC/DC power grid simulation platform,NGSP)的设计方案,并从设计目的、技术路线以及具体实现等角度对其各部分的功能与架构进行了详细的分析。基于所提设计方案建设的仿真平台不仅能够实现6000个节点的数模混合电磁暂态仿真,同时相比于传统的仿真工具,其全数字仿真加速比达到了3000以上,明显提高了我国大规模特高压交、直流电网的仿真精度与效率,使仿真技术能够支撑电网实际发展。

With the rapid development of UHVAC and UHVDC projects,a large-scale UHVAC/DC hybrid power grid with close-coupled AC and DC power grids,mutual multi-DC and multi-AC power systems,gradually integrated transmitting and receiving regions,as well as complex and changeable control has been formed in China.To maintain such a complex power grid in the stable and safe states,it is indispensable to study and simulate the operation of the above-mentioned power grid.Until now,all the existing power grid simulation tools cannot complete this challenging work suitably because of the UHVAC/DC power grids having more requirements for simulation tools in the simulation scale,accuracy and speed.In view of this situation,the design scheme of new generation UHVAC/DC power grid simulation platform(NGSP)is proposed in this paper,and the detailed operating functions and architecture of NGSP are also presented and analyzed from the view of the design purpose,technical route and implementation.Based on the proposed design scheme,NGSP can realize the 6000-nodes digital-analog hybrid electromagnetic transient simulation.Meanwhile,compared with the traditional tools,the full-digital simulation acceleration ratio of NGSP has be improved more than 3000,which significantly improves the simulation accuracy and efficiency of large-scale UHVAC/DC power grid of China.Based on the above advantages of NGSP,the simulation technology of China can support the actual development of the power grid now.