基于多图层并行渲染的电网安全态势动态可视化研究  

Research on Dynamic Visualization of Power Grid Security Situation Based on Multi-layer Parallel Rendering

作　　者：陈旭涛 张俊勃 CHEN Xutao;ZHANG Junbo(School of Electric Power,South China University of Technology,Guangzhou 510641,Guangdong Province,China)

机构地区：[1]华南理工大学电力学院,广东省广州市510641

出　　处：《电力信息与通信技术》2023年第4期59-66,共8页Electric Power Information and Communication Technology

基　　金：广东省自然科学杰出青年基金项目(2018B030306041);广州市应用基础研究计划项目(202102020413)。

摘　　要：电网运行态势可视化是电网调度运行决策的重要辅助工具,但系统动态过程可视化的计算量庞大,导致浏览器/服务器架构的可视化客户端难以满足实时性需求。针对该问题,文章提出一种基于多图层并行渲染的电网安全态势动态可视化方法,分析了新型绘图技术OffscreenCanvas应用于多图层并行渲染的可行性与技术难点,针对功角振荡和潮流转移等安全态势场景设计动态可视化表征方法,结合OffscreenCanvas和电力系统数据的特性研究多图层数据分配机制和视图层的数据组织方式。在658节点大型电网的案例测试中,所提多图层并行渲染方案性能约为传统方案的4倍,为电网态势实时可视化提供了有效支撑。The visualization of power grid operation situation is an important tool for grid dispatching.However,the current browser/server architecture cannot meet the real-time visualization requirement due to the calculation burden of power system dynamics.To solve this problem,this paper proposes a dynamic visualization method of power grid security situation based on parallel rendering of multiple image layers,analyzes the feasibility and technical difficulties of the application of OffscreenCanvas to parallel rendering of multiple image layers,and designs a dynamic visualization method for several important security situation scenes.Combined with the characteristics of OffscreenCanvas and power system data,the data distribution mechanism of multi-graph layer and the data organization mode of view layer are studied.In the case study of 658-node power grid,the time-saving performance of the proposed multi-layer parallel rendering scheme is about 4 times of the traditional scheme,which provides an effective support for visualization of power grid situation.

关 键 词：电网运行态势可视化 多图层并行渲染 OffscreenCanvas 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]