Control strategy of clustered micro‐grids for grid voltage unbalance compensation without communications

Liu, Baoquan; Xu-guang, Zhao; Yan, Liu; Zhu, Yixin; Chen, Jingwen

doi:10.1049/iet-gtd.2020.0421

Cited by 5 publications

(1 citation statement)

References 26 publications

(24 reference statements)

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“…The single-phase equipment, single-phase load, and power grid influence each other in microgrid, which situation destroys the three-phase voltage balance of microgrid, and brings the problem of three-phase voltage imbalance in microgrid. 28 As a small power generation and distribution system, the power quality of microgrid is simultaneously affected by the load side, the distributed generation side, and the grid side, which makes it more difficult to analyze and control the power quality. 29 The power quality of the microgrid will affect the normal operation of the equipment to a certain extent, and affect the life of the equipment.…”

Section: Microgrid Structure and Power Quality Problemsmentioning

confidence: 99%

Comprehensive power quality evaluation method of microgrid with dynamic weighting based on CRITIC

Shi

Jiang

et al. 2021

Measurement and Control

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The power quality assessment provides a reference for power quality management and control of microgrid operation. In terms of reflecting the correlation of power quality indexes and the dynamic changes of microgrid operating conditions, the traditional power quality assessment methods need to be improved. A power quality comprehensive evaluation based on CRITIC and dynamic coefficient is proposed in this paper. In this method, the objective weight of power quality indicators in single node is determined by using the intensity of conflict and contrast firstly. For the node weight calculation, the dynamic coefficient is proposed to reflect the different influence degree of node with different connected load. The proposed method in this paper can reflect both the internal characteristic of data sequence and the relationship between different data sequences. In addition, it also can reflect the dynamic changes of microgrid. Finally, an example is used to verify the feasibility of the proposed method.

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Section: Microgrid Structure and Power Quality Problemsmentioning

confidence: 99%