High-voltage electrical post equipment is generally installed on steel supports,which amplifies the seismic inputs and degrades the seismic performance of equipment.This study proposed a variable cross-section damped ...High-voltage electrical post equipment is generally installed on steel supports,which amplifies the seismic inputs and degrades the seismic performance of equipment.This study proposed a variable cross-section damped steel support frame(VCDFS)with viscous dampers to reduce seismic responses of both tall and low-rise electrical equipment.The VCDFS contains a trapezoidal damper layer to generate rocking motions,enabling the diagonal viscous dampers to dissipate seismic inputs.A theoretical model of post equipment with VCDFS is established,and an optimal design procedure is proposed.The analysis shows that the remaining static stiffness ratio λ_(k) is the key parameter that determines the effectiveness of the VCDFS.The VCDFS reduces the average displacement and stress response of a post insulator by 39.4%and 44.6%,respectively,together with a significant decrease in the dynamic amplification factor.Therefore,it is recommended to use the VCDFS instead of the conventional latticed-steel frame in earthquake zones.展开更多
在介绍智能电网的信息通信系统(information and communication system,ICS)业务需求的基础上,提出了支持中国特色智能化电网的ICS体系架构,给出了支持中国特色智能化电网的ICS标准体系结构。ICS体系架构涉及信息通信技术、ICS体系框架...在介绍智能电网的信息通信系统(information and communication system,ICS)业务需求的基础上,提出了支持中国特色智能化电网的ICS体系架构,给出了支持中国特色智能化电网的ICS标准体系结构。ICS体系架构涉及信息通信技术、ICS体系框架、ICS网络管理和ICS网络安全防护等方面内容。预期了支撑中国智能化电网的信息通信技术研究热点和ICS建设与示范工程。建议加强支持中国特色智能化电网ICS的网络管理、安全防护和技术标准体系建设工作。展开更多
基金Guangdong Basic and Applied Basic Research Foundation under Grant Nos.2022A1515110561 and 2023A1515010072Natural Science Foundation of China under Grant Nos.52308488 and 52378499。
文摘High-voltage electrical post equipment is generally installed on steel supports,which amplifies the seismic inputs and degrades the seismic performance of equipment.This study proposed a variable cross-section damped steel support frame(VCDFS)with viscous dampers to reduce seismic responses of both tall and low-rise electrical equipment.The VCDFS contains a trapezoidal damper layer to generate rocking motions,enabling the diagonal viscous dampers to dissipate seismic inputs.A theoretical model of post equipment with VCDFS is established,and an optimal design procedure is proposed.The analysis shows that the remaining static stiffness ratio λ_(k) is the key parameter that determines the effectiveness of the VCDFS.The VCDFS reduces the average displacement and stress response of a post insulator by 39.4%and 44.6%,respectively,together with a significant decrease in the dynamic amplification factor.Therefore,it is recommended to use the VCDFS instead of the conventional latticed-steel frame in earthquake zones.
文摘在介绍智能电网的信息通信系统(information and communication system,ICS)业务需求的基础上,提出了支持中国特色智能化电网的ICS体系架构,给出了支持中国特色智能化电网的ICS标准体系结构。ICS体系架构涉及信息通信技术、ICS体系框架、ICS网络管理和ICS网络安全防护等方面内容。预期了支撑中国智能化电网的信息通信技术研究热点和ICS建设与示范工程。建议加强支持中国特色智能化电网ICS的网络管理、安全防护和技术标准体系建设工作。
