In recent times,the impact of typhoon disasters on integrated energy active distribution networks(IEADNs)has received increasing attention,particularly,in terms of effective cascading fault path prediction and enhance...In recent times,the impact of typhoon disasters on integrated energy active distribution networks(IEADNs)has received increasing attention,particularly,in terms of effective cascading fault path prediction and enhanced fault recovery performance.In this study,we propose a modified ORNL-PSerc-Alaska(OPA)model based on optimal power flow(OPF)calculation to forecast IEADN cascading fault paths.We first established the topology and operational model of the IEADNs,and the typical fault scenario was chosen according to the component fault probability and information entropy.The modified OPA model consisted of two layers:An upper-layer model to determine the cascading fault location and a lower-layer model to calculate the OPF by using Yalmip and CPLEX and provide the data to update the upper-layer model.The approach was validated via the modified IEEE 33-node distribution system and two real IEADNs.Simulation results showed that the fault trend forecasted by the novel OPA model corresponded well with the development and movement of the typhoon above the IEADN.The proposed model also increased the load recovery rate by>24%compared to the traditional OPA model.展开更多
从电力安全事故(事件)的角度,根据《中国南方电网有限责任公司电力事故(事件)调查规程(试行)》和《南方电网运行安全风险量化评估技术规范》,提出一套停电风险评估指标,用于计算电网发生电力安全事故(事件)的风险值。基于该指标,结合OP...从电力安全事故(事件)的角度,根据《中国南方电网有限责任公司电力事故(事件)调查规程(试行)》和《南方电网运行安全风险量化评估技术规范》,提出一套停电风险评估指标,用于计算电网发生电力安全事故(事件)的风险值。基于该指标,结合OPA模型提出了一种电力系统停电风险评估方法。采用该方法对某500 k V网架系统进行了仿真,结果表明所辨识出的薄弱区域与实际系统运行经验相符,验证了指标和方法的正确性。展开更多
基金supported by the Science and Technology Project of China Southern Power Grid Co.,Ltd.under Grant GDKJXM20222357.
文摘In recent times,the impact of typhoon disasters on integrated energy active distribution networks(IEADNs)has received increasing attention,particularly,in terms of effective cascading fault path prediction and enhanced fault recovery performance.In this study,we propose a modified ORNL-PSerc-Alaska(OPA)model based on optimal power flow(OPF)calculation to forecast IEADN cascading fault paths.We first established the topology and operational model of the IEADNs,and the typical fault scenario was chosen according to the component fault probability and information entropy.The modified OPA model consisted of two layers:An upper-layer model to determine the cascading fault location and a lower-layer model to calculate the OPF by using Yalmip and CPLEX and provide the data to update the upper-layer model.The approach was validated via the modified IEEE 33-node distribution system and two real IEADNs.Simulation results showed that the fault trend forecasted by the novel OPA model corresponded well with the development and movement of the typhoon above the IEADN.The proposed model also increased the load recovery rate by>24%compared to the traditional OPA model.
文摘从电力安全事故(事件)的角度,根据《中国南方电网有限责任公司电力事故(事件)调查规程(试行)》和《南方电网运行安全风险量化评估技术规范》,提出一套停电风险评估指标,用于计算电网发生电力安全事故(事件)的风险值。基于该指标,结合OPA模型提出了一种电力系统停电风险评估方法。采用该方法对某500 k V网架系统进行了仿真,结果表明所辨识出的薄弱区域与实际系统运行经验相符,验证了指标和方法的正确性。
