标题：Research of metering scheme for self-provided power plants based on synchronized clock signals
作者：Zhai, Yiwei ;Xu, Yuanrong ;Duan, Wenzhe ;Yan, Yuehao ;Yang, Yihang
作者机构：[Zhai, Yiwei ] School of Electrical Engineering, Shandong University, Jinan, China;[Yang, Yihang ] School of Electrical Engineering, Zhengzhou Univers 更多
会议名称：7th IEEE Innovative Smart Grid Technologies - Asia, ISGT-Asia 2017
会议日期：December 4, 2017 - December 7, 2017
来源：2017 IEEE Innovative Smart Grid Technologies - Asia: Smart Grid for Smart Community, ISGT-Asia 2017
摘要：Influenced by their loads and operation states, self- provided power plants may get power from the grid or supply power to the grid. It is necessary to measure the on-grid energy and the off-grid energy respectively because of the difference between the on-grid price and the off-grid price. When a self- provided power plant is connected with two or more substations in the power grid, ride-through flow may be generated due to the influence of grid operating states. It is crucial for accurate metering to eliminate ride-through energy when measuring on- grid energy and off-grid energy. A novel method to judge the power state of self-provided power plants is put forward in this paper by analyzing the phenomenon that ride-through flow may be generated when transmission lines is connected with the grid. On this basis, a scheme for measuring on-grid energy and off- grid energy of self-provided power plants based on synchronized clock signal is presented by introducing a clock synchronization system. The accuracy of the proposed scheme is verified by comparing against approximate measurement data.
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