Protection issues in the presence of power electronic converters in smart LV residential networks

Protection issues in the presence of power electronic converters in smart LV residential networks
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智能低压住宅网络中存在电力电子转换器的保护问题

DOI:
10.1049/stg2.12007
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发表时间:
2021
期刊:
影响因子:
2.3
通讯作者:
Amiri A
Amiri A
中科院分区:
--
文献类型:
--
作者:
Amiri A

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英国正在考虑使用电力电子转换器来降低与单个住宅连接点的电压。这是为了使现有低压电缆上的电压可以提高,这将导致容量的增加,而不需要昂贵的加固。这一产能的增加是为了适应电动汽车和电热等新的低碳技术的预期采用。功率转换器和通信设备的加入也为智能电网功能提供了机会,例如通过电压控制管理本地需求。本研究认为,在目前适用于住宅物业的布线法规和标准的背景下,这种转换器的设计。特别是,发现转换器的额定值取决于与房屋内现有断路器保护协调的需要。因此,提出了一种保护策略的转换器,这是使用统计仿真研究进行评估。
The use of a power electronic converter to step‐down the voltage at the point of connection to individual residential houses is being considered in the UK. This is so that the voltage on the existing low voltage cables can be boosted, which would result in an increase in capacity without the need for costly reinforcement. This capacity increase is needed to accommodate an anticipated take‐up of new, low‐carbon technologies such as electric vehicles and electro‐heat. The inclusion of a power converter and communications device also offers the opportunity for smart‐grid functions such as managing local demand through voltage control. This study considers the design of this converter within the context of wiring regulations and standards that currently apply to a residential property. In particular, it is found that the rating of the converter is determined by the need to co‐ordinate with the existing circuit breaker protection within the house. A protection strategy is therefore proposed for the converter, which is evaluated using a statistical simulation study.
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