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2011 International Conference on Advanced Power System Automation and Protection(APAP 2011)

作者： MA WenJun MU LongHua AO Pei ZHANG Xin Department of Electrical Engineering Tongji University Shanghai 201804 China

A new type of merging unit is introduced for digital substation in this paper. Based on integration design method at the process level, merging unit and intelligent operating unit are integrated into a new type merging unit. Dual CPU of dsPIC and ARM is applied in plug-in structure. And also some details of designing in hardware and software are introduced in this paper. The device, with good function, high performance in reliability, generality and scalability, can meet the requirements of both digital substation and future smart substation, which has good reference significance and application value.

关键词： digital substation IEC 61850 merging unit plug-in structure dual CPU

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Vertically integrated outdoor in-site line protection based on SoC technique

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Global Energy Interconnection 2018年第2期1卷 179-186页

作者： Tonghua Wu Yuping Zheng Yutao Qiu Xiaoping Zhang Gang Yao Jimin Chai Xiaofan Hou College of Energy and Electrical Engineering Hehai University NARI Group Corporation/State Grid Electric Power Research Institute State Key Laboratory of Smart Grid Protection and Control State Grid Zhejiang Electric Power Corporation Electrical and System Engineering University of Birmingham

By focusing on the problems of speed, reliability, operation and maintenance in the practical application of line protection in conventional and smart substations, we propose system architecture and a technical scheme for in-site(similar in meaning to on-site or near-process) line protection based on vertical integration and outdoor installation. The functions of the single-bay merging unit, relay protection, and intelligent terminal are vertically integrated to reduce the number and types of devices, simplify the configuration, reduce signal transmission, and shorten the protection action time. In addition, this vertically integrated device is applied to provide data acquisition and control execution support for substation-area protection, security and stability of devices, and other substation-area devices. The vital performance outputs are tested and compared. Finally, the experimental results verify that the proposed scheme is feasible and the technology is advanced.

关键词： Line protection In-site relay protection merging unit Vertical integration

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Electronic Current Transformer Applications in Smart Grid

Electronic Current Transformer Applications in Smart Grid

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2011年亚太青年通信学术会议

作者： Wenzhu FU1 Wei LI2 Chuankun XIA3 Henan Hebi of Electric Power Supply Company China Henan province Hebi 458030

The electronic current transformer is one of the key device for intelligent substation,transformer testing methods do not exist in the field right,maintenance service,such as a single issue,in the text on the electronic current transformer structure,principles,operating characteristics are described in detail,provide electronic current transformer test methods.

关键词： electronic instrument transformer Sampling systems merging unit

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