Suppression Strategy of Unintentional Emission Supraharmonic Based on Edge Computing for Wind Farms

doi:10.11930/j.issn.1004-9649.202208056

Abstract

Abstract: To solve the unintentional emission supraharmonic problem at the grid-connected point of wind farm group, this paper introduces a supraharmonic suppression mechanism and a carrier phase optimization control strategy based on edge computing. Firstly, a supraharmonic emission model is established for the grid-side converter of wind generators and the propagation characteristics of supraharmonic is analyzed with consideration of the Bergeron distribution parameter model. And then, considering the influence of active power, carrier phase, and other parameters of wind generators, the quantitative relationship between the carrier phase and the supraharmonic phase is studied. A phase adjustment model of unintentional emission supraharmonic is constructed for grid-connected wind power systems, and a supraharmonic suppression method is proposed through controlling supraharmonic phase. Finally, taking advantage of the low-latency advantage of the edge computing in data calculation, the optimal control algorithm for the carrier phase of the wind farm group is deployed on the wind generator side, and the unintentional emission supraharmonic suppression strategy is proposed for wind farm group based on edge computing. The simulation results show that the supraharmonic suppression mechanism and control strategy can significantly eliminate supraharmonic at the grid-connected point of wind farm group.

Key words: power quality, supraharmonic, supraharmonic phase, supraharmonic suppression, edge computing, carrier phase optimization control

CLC Number:

TM464

LI Tianchu, RONG Bin, WU Zhipeng, HUANG Jue, HUANG Kailai, YANG Gang, YI Yang. Suppression Strategy of Unintentional Emission Supraharmonic Based on Edge Computing for Wind Farms[J]. Electric Power, 2023, 56(8): 200-206,215.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.202208056

https://www.electricpower.com.cn/EN/Y2023/V56/I8/200

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