Objective To analyze the current situation of medicine circulation enterprises and summarize the influence of frequently introduced industry policies on the pharmaceutical field,so as to provide suggestions on improvi...Objective To analyze the current situation of medicine circulation enterprises and summarize the influence of frequently introduced industry policies on the pharmaceutical field,so as to provide suggestions on improving the competitiveness and maintaining sustainable development of medicine circulation enterprises in China.Methods Industry policy analysis,literature inquiry,expert interview and questionnaire survey were used to study the challenges that medicine circulation faced under the new situation.Then,the key indexes were found out to improve its competitiveness.Results and Conclusion Through the analysis of the current situation of the industry,policy orientation and market demand,some suggestions are put forward for related enterprises to improve their competitiveness.展开更多
With the increasing complexity of power systems and the widespread penetration of renewable energy sources(RES),real-time situational awareness for power systems is of great significance for operational scheduling.Con...With the increasing complexity of power systems and the widespread penetration of renewable energy sources(RES),real-time situational awareness for power systems is of great significance for operational scheduling.Considering the impact of RES on power system operations,a situational awareness key performance index(KPI)system for power systems with a high proportion of RES is proposed in this paper,which consists of reserve capacity abundance,ramp resource abundance,center of inertia(COI)frequency deviation,interface power flow margin,synthesized voltage stability,and angle stability margin.Then,the KPIs are synthesized and visualized by the decision tree method and radar chart method,respectively,for monitoring the operation states(i.e,normal,alert,and emergency states)of power systems with a high proportion of RES.Numerical simulations are conducted in a revised New England 16-machine 68-bus power system and an actual CEPRI-RE power system in the northwest region of China with a high proportion of RES.The results show that the proposed KPI-based situational awareness method is able to accurately monitor the real-time state of power systems with a high proportion of RES,and can assist power dispatchers to make effective decisions.展开更多
文摘Objective To analyze the current situation of medicine circulation enterprises and summarize the influence of frequently introduced industry policies on the pharmaceutical field,so as to provide suggestions on improving the competitiveness and maintaining sustainable development of medicine circulation enterprises in China.Methods Industry policy analysis,literature inquiry,expert interview and questionnaire survey were used to study the challenges that medicine circulation faced under the new situation.Then,the key indexes were found out to improve its competitiveness.Results and Conclusion Through the analysis of the current situation of the industry,policy orientation and market demand,some suggestions are put forward for related enterprises to improve their competitiveness.
基金supported in part by the National Key R&D Program of China(2016YFB0900100)the National Natural Science Foundation of China(52077195).
文摘With the increasing complexity of power systems and the widespread penetration of renewable energy sources(RES),real-time situational awareness for power systems is of great significance for operational scheduling.Considering the impact of RES on power system operations,a situational awareness key performance index(KPI)system for power systems with a high proportion of RES is proposed in this paper,which consists of reserve capacity abundance,ramp resource abundance,center of inertia(COI)frequency deviation,interface power flow margin,synthesized voltage stability,and angle stability margin.Then,the KPIs are synthesized and visualized by the decision tree method and radar chart method,respectively,for monitoring the operation states(i.e,normal,alert,and emergency states)of power systems with a high proportion of RES.Numerical simulations are conducted in a revised New England 16-machine 68-bus power system and an actual CEPRI-RE power system in the northwest region of China with a high proportion of RES.The results show that the proposed KPI-based situational awareness method is able to accurately monitor the real-time state of power systems with a high proportion of RES,and can assist power dispatchers to make effective decisions.
