State Grid Jiangsu Electric Power Company

Global Energy Interconnection Research Institute Co. Ltd

State Grid Shanxi Electric Power Company

Global Energy Interconnection Research Institute

State Grid of China, State Grid Jiangsu Electric Power Co Ltd

State Grid Jiangxi Electric Power Co, Geirina

Geiri Co Ltd, State Grid Jiangxi Electric Power Co, State Grid Corp of China, Geirina Inc.

State Grid Coporation of China Co. Ltd

Qibing Zhang

Di Shi

Chunlei Xu

Zhiwei Wang

Haifeng Li

Xiao Lu

Ruisheng Diao

Yishen Wang

Zhehan Yi

Xiaohu Zhang

Yingzhong Gu

Guanyu Tian

State estimation in an electric power system includes acquiring electrical measurements from the electric power system at a reporting rate of the electrical measurements, processing the electrical measurements into sequence data including positive sequence data, processing positive sequence data by an observable state estimator to generate a plurality of estimated states including a plurality of estimated observable states, parameters of the observable state estimator being updated by a first training module in a first time thread, processing the plurality of estimated states by an unobservable state estimator to generate a plurality of estimated unobservable states, parameters of the unobservable state estimator being updated by a second training module in a second time thread independent of the first time thread, and outputting a plurality of final estimated states generated by concatenating the plurality of estimated observable states and the plurality of estimated unobservable states.

Systems and methods of power system state estimation

Systems and methods manage electrical loads in a grid by applying Robust principal component analysis (R-PCA) to decompose annual load profiles into low-rank components and sparse components; extracting one or more predetermined features; constructing a similarity graph; selecting submodular cluster centers through the constructed similarity graph; determining a cluster assignment based on selected centers; and applying the clustering assignment for load analysis.

Submodular load clustering with robust principal component analysis

Systems and method are disclosed for monitor long-term voltage stability in a power system by estimating post-contingency operating point(s) considering PV-PQ transitions based on the current operating point; predicting a sensitivity based Thevenin index (STI) for each contingency using the estimated operating condition; and determining a voltage stability assessment (VSA) considering N&#x2212;1 contingency.

Sensitivity based Thevenin index for voltage stability assessment considering N-1 contingency

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Nanjing, China

Qibing Zhang