REACTIVE POWER ACTIVE SUPPORT STRATEGY FOR HIGH PENETRATION RATE HOUSEHOLD PHOTOVOLTAICS IN RURAL LOW-VOLTAGE AREAS CONSIDERING UNBALANCED ACCESS

Chen Zhiwei; Chen Xinbin; Gui Yanhao; Chen Zefan; Tang Yajie; Qian Tiancheng

doi:10.19912/j.0254-0096.tynxb.2024-2206

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Acta Energiae Solaris Sinica ›› 2026, Vol. 47 ›› Issue (4) : 693-703. DOI: 10.19912/j.0254-0096.tynxb.2024-2206

REACTIVE POWER ACTIVE SUPPORT STRATEGY FOR HIGH PENETRATION RATE HOUSEHOLD PHOTOVOLTAICS IN RURAL LOW-VOLTAGE AREAS CONSIDERING UNBALANCED ACCESS

Chen Zhiwei¹, Chen Xinbin², Gui Yanhao³, Chen Zefan¹, Tang Yajie⁴, Qian Tiancheng¹

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Abstract

This paper proposes a coherent strategy for active reactive support of household photovoltaics with high penetration rate in rural low-voltage areas taking into account unbalanced access, and especially does not rely on reactive power adjustment devices such as SVG. Firstly, household photovoltaic inverters with single-phase and three-phase access are taken as the objects of active reactive regulation, and a high-penetration household photovoltaic refined variable weight multi-objective optimization model is constructed taking into account the three-phase imbalance and the real-time output characteristics of photovoltaic-load during the day and night to meet the control requirements under different working conditions of the area. Secondly, the economy, stability and computational complexity of the regulation of each inverter in the continuous period are further considered, and the full-time active support strategy of the area based on the third-generation non-dominated sorting genetic algorithm （NSGA-Ⅲ） and coherent control is designed to efficiently calculate the three-phase asymmetric power flow and achieve smoother household photovoltaic coordinated reactive regulation. The calculation results show that the proposed method can fully tap the active support potential of high-penetration household photovoltaics, improve the comprehensive power quality of rural low-voltage substations, reduce substation network losses, and improve the stability and economy of distribution network operation.

Key words

low-voltage area / photovoltaic power / multi-objective optimization / three-phase unbalance / reactive active support / coherence control / NSGA-Ⅲ

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Chen Zhiwei, Chen Xinbin, Gui Yanhao, Chen Zefan, Tang Yajie, Qian Tiancheng. REACTIVE POWER ACTIVE SUPPORT STRATEGY FOR HIGH PENETRATION RATE HOUSEHOLD PHOTOVOLTAICS IN RURAL LOW-VOLTAGE AREAS CONSIDERING UNBALANCED ACCESS[J]. Acta Energiae Solaris Sinica. 2026, 47(4): 693-703 https://doi.org/10.19912/j.0254-0096.tynxb.2024-2206

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