1. The state key lab of CAD & CG, Zhejiang University, Hangzhou 310058, China 2. School of Computer Science and Engineering, Central South University, Changsha 410083, China 3. The State Key Lab of Power Grid Safety and Energy Conservation, China Electric Power Research Institute, Beijing 100192, China 4. School of Computer Science and Information Security, Guilin University of Electronic Technology, Guilin 541004, China
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.
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