YANG Pengcheng,FENG Qifan,WEI Wei,et al.Comprehensive Harmonic Mitigation of Distribution Networks Based on Local Control of Photovoltaic Inverters[J/OL].Automation of Electric Power Systems, http://dx.doi.org/10.7500/AEPS20251104004.
YANG Pengcheng,FENG Qifan,WEI Wei,et al.Comprehensive Harmonic Mitigation of Distribution Networks Based on Local Control of Photovoltaic Inverters[J/OL].Automation of Electric Power Systems, http://dx.doi.org/10.7500/AEPS20251104004.DOI:
Comprehensive Harmonic Mitigation of Distribution Networks Based on Local Control of Photovoltaic Inverters
The wide distribution of harmonic pollution sources in modern distribution networks deteriorates the power quality of the entire grid
making coordinated mitigation among multiple converters a research hotspot. However
constrained by the difficulty in accurate sensing of harmonic phasors
high computational complexity
stringent real-time control requirements
as well as challenges in control stability and current over-limit
existing methods can hardly achieve ideal mitigation effects in practical applications. To address the above issues
this paper proposes a comprehensive harmonic mitigation method of distribution networks based on local control of photovoltaic inverters. Combining two local harmonic control strategies
namely the local harmonic current compensation control and harmonic virtual conductance control of converters
the proposed method targets the minimization of global voltage total harmonic distortion. Through mitigation scheme configuration
centralized solution of control commands and real-time correction of harmonic current references
the utilization of the residual capacity of photovoltaic inverters is maximized for harmonic mitigation. Compared with existing methods
the proposed method achieves superior mitigation effects and can comprehensively improve the power quality of distribution networks under varying grid operating conditions.
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