Yin Jianning, Lang Xiaojian, Xu Haotian, Duan Jiandong
School of Electrical Engineering, Xi'an University of Technology, Xi'an 710048, China.
Zhejiang Tengen Electric Co., Ltd., Yueqing 325604, China.
Sensors (Basel). 2022 Aug 11;22(16):5990. doi: 10.3390/s22165990.
The exploitation and utilization of clean energy such as wind and photovoltaic power plays an important role in the reduction in carbon emissions to achieve the goal of "emission peak and carbon neutral", but such a quantity of clean energy accessing the electric system will foster the transition of the electric power system structure. The intelligentization of power equipment will be an inevitable trend of development. High breaking performance, remote control and a digital detection platform of miniature circuit breaker, a protective equipment of a power distribution system, have also been inevitable requirements of the power Iot system. Based on the above, this paper studies three aspects: high-performance AC and DC general switching technology, remote control technology and operation status' digital monitoring. A new DC non-polar breaking technology is proposed, which improves the short circuit breaking ability. An experimental prototype using the above techniques was fabricated and passed the DC 1000 V/10 kA short-circuit breaking test. On the basis of the above, an intelligent circuit breaker is developed, which contains multiple functions: remote switching, real-time temperature detection, energy metering and fault warning. Moreover, a software for digital condition monitoring and remote control is developed. This work has certain theoretical and practical significance for the development of the power Internet of things.
风能和光伏发电等清洁能源的开发利用，对实现“碳达峰、碳中和”目标下的碳排放 reduction 具有重要作用，但如此大量的清洁能源接入电力系统将推动电力系统结构转型。电力设备智能化将是必然发展趋势。作为配电系统保护设备的微型断路器，其高断路性能、遥控功能以及数字检测平台，也已成为电力物联网系统的必然要求。基于此，本文从高性能交直流通用开关技术、遥控技术和运行状态数字监测三个方面展开研究。提出了一种新型直流无极性分断技术，提高了短路分断能力。制作了采用上述技术的实验样机，并通过了直流1000V/10kA短路分断试验。在此基础上，开发了一款具备远程开关、实时温度检测、电能计量和故障预警等多种功能的智能断路器。此外，还开发了用于数字状态监测和遥控的软件。这项工作对电力物联网的发展具有一定的理论和实际意义。
