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Impact of Transients Caused by PV Transformer Energization on Active Industrial Loads
IETE Technical Review ( IF 2.5 ) Pub Date : 2020-06-07 , DOI: 10.1080/02564602.2020.1766386
Ayush Chandel 1 , David Lee Lubkeman 1
Affiliation  

ABSTRACT

The importance and impact of transient studies with appropriate distribution system modelling is highlighted in the present work. New and realistic modelling techniques to be employed in modern distribution system are presented. Various issues, arising due to the energization of photovoltaic (PV) transformer on active industrial loads in a distribution network, are modelled. Sudden energization of large PV plant transformer(s) with respect to the voltage, current, harmonic profile and their effect on the system impedance in a distribution network is dealt with as this impacts the network performance. Cause and effect for the tripping of the industrial plant drives post connection of the large transformers of the photovoltaic plant is investigated. The inverter-based loads are sensitive to the frequency response of grids which is shaped by power factor capacitors. The use of current-limiting resistors and strict constraints on system impedance is analysed and inferred to be the promising techniques for the stable operation of large industrial loads. Furthermore, the research work highlights the various other aspects to make the distribution system more efficient. Special cautions need to be followed if industrial loads are in the vicinity of the planned DERs. Hence, the need of modelling and simulation of transient-impact studies with appropriate frequency analysis prior to actual deployment of large-scale PV plants in “vital” load areas is essential.



中文翻译:

光伏变压器通电引起的瞬变对有源工业负载的影响

摘要

在当前的工作中强调了具有适当配电系统建模的瞬态研究的重要性和影响。介绍了在现代配电系统中采用的新的和现实的建模技术。对由于配电网络中的有源工业负载上的光伏 (PV) 变压器通电而产生的各种问题进行了建模。处理大型光伏电站变压器在电压、电流、谐波分布及其对配电网络中系统阻抗的影响方面的突然通电,因为这会影响网络性能。调查了光伏电站大型变压器接线后工业厂房驱动器跳闸的原因和影响。基于逆变器的负载对由功率因数电容器形成的电网频率响应敏感。分析并推断限流电阻的使用和对系统阻抗的严格约束是大型工业负载稳定运行的有前途的技术。此外,研究工作强调了使配电系统更有效的其他各个方面。如果工业负载位于计划的 DER 附近,则需要特别注意。因此,在“重要”负载区域实际部署大型光伏电站之前,需要对瞬态影响研究进行建模和仿真,并进行适当的频率分析。分析并推断限流电阻的使用和对系统阻抗的严格约束是大型工业负载稳定运行的有前途的技术。此外,研究工作强调了使配电系统更有效的其他各个方面。如果工业负载位于计划的 DER 附近,则需要特别注意。因此,在“重要”负载区域实际部署大型光伏电站之前,需要对瞬态影响研究进行建模和仿真,并进行适当的频率分析。分析并推断限流电阻的使用和对系统阻抗的严格约束是大型工业负载稳定运行的有前途的技术。此外,研究工作强调了使配电系统更有效的其他各个方面。如果工业负载位于计划的 DER 附近,则需要特别注意。因此,在“重要”负载区域实际部署大型光伏电站之前,需要对瞬态影响研究进行建模和仿真,并进行适当的频率分析。如果工业负载位于计划的 DER 附近,则需要特别注意。因此,在“重要”负载区域实际部署大型光伏电站之前,需要对瞬态影响研究进行建模和仿真,并进行适当的频率分析。如果工业负载位于计划的 DER 附近,则需要特别注意。因此,在“重要”负载区域实际部署大型光伏电站之前,需要对瞬态影响研究进行建模和仿真,并进行适当的频率分析。

更新日期:2020-06-07
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