Tsinghua University

Beijing Normal University

Wenli (guangdong) Technology Co., Ltd.

Shanghai Municipal Electric Power Company

Guangyu He

Xu Zhang

Wei Wang

Jun Luo

Lin Chen

Minju Ying

Xiaoping Ouyang

Pan Pang

Shengwei Mei

Bin Liao

Xianying Wu

Qingsong Hua

Ran Han

Weifeng He

Shufeng Dong

Yingyun Sun

Wangjun Zhang

The present invention discloses a magnetic filter tube, and relates to the technical field of magnetic filters. The magnetic filter tube includes a first rectangular tube and a second rectangular tube, where one end of the first rectangular tube is fixedly connected to one end of the second rectangular tube; the other end of the first rectangular tube forms an inlet of the magnetic filter tube; the inlet of the magnetic filter tube is connected with a cathode target flange; the other end of the second rectangular tube forms an outlet of the magnetic filter tube; the outlet of the magnetic filter tube is connected with a vacuum chamber; an inner wall of the first rectangular tube and an inner wall of the second rectangular tube are each provided with a protrusion and a groove; the protrusion is filled with cold water.

Magnetic filter tube

The method for state estimation based on the measured data of data-acquisition system in electric power system relates to the field of power system analysis technique, characterized in that the method comprises: distributing the said measured data into an operating power system to form a calculation model, defining the injection power of the link nodes as 0 and taking the maximum active power output, maximum reactive power output of the generator as the constraints, constructing a mathematic model for estimation, resolving the optimum solution of the voltage amplitude and voltage phase angle for every node, and calculating the estimated values of the voltage, the active power and the reactive power by using the optimum solution of the state variables, if the difference between the measured value and the estimated value was less than a parameter &#x3b1; that is predetermined under different voltage levels, the estimated value is qualified. The estimation criterion provided by the present invention is unlikely affected by bad data with a strong capability of robust, improving the correctness of the estimation.

Method for state estimation based on the measured data of the data-acquisition system in power system

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Beijing, China

Guangyu He