Hybrid distribution transformers(HDTs)have better performance than traditional distribution transformers in improving power quality through reducing harmonics,unbalance,voltage fluctuations and low power factors in fu...Hybrid distribution transformers(HDTs)have better performance than traditional distribution transformers in improving power quality through reducing harmonics,unbalance,voltage fluctuations and low power factors in future smart power distribution systems.In order to increase the service life and reliability of hybrid distribution transformers,this paper proposes a remote management system using LoRa technology based on fuzzy logic.HDT based on a fuzzy logic judgment system(FLJS)replaces the Boolean logic with fuzzy logic and several power quality problems including power factors,load-side current harmonics and voltage unbalance are considered,as well as grid-side voltage deviation and unbalance.This management system can dynamically adjust the working states of HDT according to the output results of the FLJS to reduce the use time of power electronic devices.Due to the application of LoRa,this management system can remotely adjust the parameters of the FLJS in real time for different distribution network nodes to avoid frequent switching of HDT working states.In addition,it is able to remotely monitor the real-time working states and fault states of HDT to reduce recovery time and maintenance costs in case of HDT failure.Finally,simulation and experimental results are presented to verify the effectiveness of the proposed management system for HDT.展开更多
Serial RapidIO （SRIO） is an emerging high-performance interconnection technology for embedded systems. Protections for SRIO packets are provided by the cyclic redundancy check （CRC）. In this paper, an improved CRC...Serial RapidIO （SRIO） is an emerging high-performance interconnection technology for embedded systems. Protections for SRIO packets are provided by the cyclic redundancy check （CRC）. In this paper, an improved CRC receiving controller with 64-bit internal data width is proposed. Equivalent judgment logics are adopted in the aims of reducing the number of CRC generators. The resource consumption and power dissipation can be saved meanwhile the frequency requirement can still be met. By comparison to conventional structures, the proposed scheme can achieve better performances. Therefore, this improved receiving controller is considered applicable in high-performance SRIO interconnections.展开更多
基金supported by the State Grid Science and Technology Project from State Grid Corporation of China(B626KY190004)the Key Research and Development Project of Shaanxi Province in 2018(No.2018ZDCXL-GY-07-05)。
文摘Hybrid distribution transformers(HDTs)have better performance than traditional distribution transformers in improving power quality through reducing harmonics,unbalance,voltage fluctuations and low power factors in future smart power distribution systems.In order to increase the service life and reliability of hybrid distribution transformers,this paper proposes a remote management system using LoRa technology based on fuzzy logic.HDT based on a fuzzy logic judgment system(FLJS)replaces the Boolean logic with fuzzy logic and several power quality problems including power factors,load-side current harmonics and voltage unbalance are considered,as well as grid-side voltage deviation and unbalance.This management system can dynamically adjust the working states of HDT according to the output results of the FLJS to reduce the use time of power electronic devices.Due to the application of LoRa,this management system can remotely adjust the parameters of the FLJS in real time for different distribution network nodes to avoid frequent switching of HDT working states.In addition,it is able to remotely monitor the real-time working states and fault states of HDT to reduce recovery time and maintenance costs in case of HDT failure.Finally,simulation and experimental results are presented to verify the effectiveness of the proposed management system for HDT.
基金supported by the Special Funds for Major State Basic Research Projects(2010CB934200)
文摘Serial RapidIO （SRIO） is an emerging high-performance interconnection technology for embedded systems. Protections for SRIO packets are provided by the cyclic redundancy check （CRC）. In this paper, an improved CRC receiving controller with 64-bit internal data width is proposed. Equivalent judgment logics are adopted in the aims of reducing the number of CRC generators. The resource consumption and power dissipation can be saved meanwhile the frequency requirement can still be met. By comparison to conventional structures, the proposed scheme can achieve better performances. Therefore, this improved receiving controller is considered applicable in high-performance SRIO interconnections.
