Closely related to the safety and stability of power grids, stability analysis has long been a core topic in the electric industry. Conventional approaches employ computational simulation to make the quantitative judgement of the grid stability under distinctive conditions. The lack of in-depth data analysis tools has led to the difficulty in analytical tasks such as situation-aware analysis, instability reasoning and pattern recognition. To facilitate visual exploration and reasoning on the simulation data, we introduce WaveLines, a visual analysis approach which supports the supervisory control of multivariate simulation time series of power grids. We design and implement an interactive system that supports a set of analytical tasks proposed by domain experts and experienced operators. Experiments have been conducted with domain experts to illustrate the usability and effectiveness of WaveLines.

与电网的安全性和稳定性密切相关，稳定性分析长期以来一直是电力行业的核心主题。常规方法采用计算仿真来对特殊条件下的电网稳定性进行定量判断。缺乏深入的数据分析工具已导致难以完成诸如情境感知分析，不稳定性推理和模式识别之类的分析任务。为了便于对仿真数据进行可视化探索和推理，我们引入了WaveLines，这是一种可视化分析方法，支持对电网的多元仿真时间序列进行监督控制。我们设计并实现了一个交互式系统，该系统支持领域专家和经验丰富的运营商提出的一组分析任务。