Wendong Zhu

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Smart grid is an important platform for the exploitation of renewable energy resources and maintaining/improving the reliability of power grid. Challenges have been identified during the construction of smart grid, which calls for novel simulation, computation and data management technologies. For example, as the size of power systems continue to increase,(More)
Electro-hydraulic servo valve, which is a key component of electro-hydraulic servo control system to control the hydraulic actuator, connects the electric part and hydraulic part of the system. Both nozzles and orifice parts are important parts of the servo valve, and the flow characteristics measured under differential pressure is directly related to the(More)
This paper presents a novel algorithm for recovering missing data of phasor measurement units (PMUs). Due to the low-rank property of PMU data, missing measurement recovery can be formulated as a low-rank matrix-completion problem. Based on maximum-margin matrix factorization, we propose an efficient algorithm based on alternating direction method of(More)
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