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Luo Yi1 ,Tu Guangyu1 ,Zhang Jinhui1 ,Zhan X inhua1 ,Cheng Zhaohui2 1.Huazhong U niversity of Science and Technology,Wuhan430 0 74,China 2 .China Huadian Power Equipment & Engineering Group Corporation,Beijing 10 0 0 73,China  
By combining multim edia technology and TCP/ IP based network technology with the substation autom ation,a new idea of substation multim edia automation system is proposed to realize digitized transm ission of m ultimedia information between master station and substation. The architecture and functions of the new substation multim edia automation system are explained.Two m ain technical problems about the system are analyzed,that is,camera selection and teletransm ission of the inform ation. A scheme for adding the function of multimedia information acquisition and transm ission to the existing substation autom ation system by adopting the multimedia RTU is also proposed.
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