Electric Power Research Institute,China Southern Power Grid,Guangzhou 510663,China;
Digital Grid Research Institute,China Southern Power Grid,Guangzhou 510663,China;
The State Key Lab of CAD&CG,Zhejiang University,Hangzhou 310058,China;
School of Computer Science,Zhejiang University,Hangzhou 310058,China;
spatio-temporal data; electricity consumption; correlation analysis; visual analysis; visualization;