Load-side regulation has been one of the most attractive approaches to coping with fluctuations in renewable energy.Power systems can cooperatively regulate the active and reactive power of voltage-sensitive loads(VSL...Load-side regulation has been one of the most attractive approaches to coping with fluctuations in renewable energy.Power systems can cooperatively regulate the active and reactive power of voltage-sensitive loads(VSLs)by changing the node voltage amplitude.However,an unreasonable load regulation range and insufficient utilization of voltage/var control resources in the transmission network deteriorate the rapid response and validity of the control system.To address these challenges,a robust real-time economic dispatch method for transmission and distribution coordinated systems is designed,which can fully utilize the regulation potential of transmission networks,thus achieving optimal economic benefits.First,a robust voltage control model is established based on sensitivity analysis to assess the VSL regulation range,and the corresponding voltage stability margin(VSM)index is introduced to guarantee long-term voltage stability.Next,the continuous locational marginal price(CLMP)is adopted to describe the load electricity cost,and then the real-time dispatch problem is studied with the objective of obtaining the maximum total revenue.Finally,in numerical simulations,a modified IEEE RTS-79 system is designed to verify both the computational efficiency and economic benefits of the proposed method.展开更多
基金supported in part by the National Natural Science Foundation of China(Project No.52007017)Science and Technology Projects of State Grid Zhejiang Electric Power Co.,Ltd 2021ZK35(Research on centralized and decentralized dispatching framework and coordinated control technology of emergency power resources under power grid unusual state).
文摘Load-side regulation has been one of the most attractive approaches to coping with fluctuations in renewable energy.Power systems can cooperatively regulate the active and reactive power of voltage-sensitive loads(VSLs)by changing the node voltage amplitude.However,an unreasonable load regulation range and insufficient utilization of voltage/var control resources in the transmission network deteriorate the rapid response and validity of the control system.To address these challenges,a robust real-time economic dispatch method for transmission and distribution coordinated systems is designed,which can fully utilize the regulation potential of transmission networks,thus achieving optimal economic benefits.First,a robust voltage control model is established based on sensitivity analysis to assess the VSL regulation range,and the corresponding voltage stability margin(VSM)index is introduced to guarantee long-term voltage stability.Next,the continuous locational marginal price(CLMP)is adopted to describe the load electricity cost,and then the real-time dispatch problem is studied with the objective of obtaining the maximum total revenue.Finally,in numerical simulations,a modified IEEE RTS-79 system is designed to verify both the computational efficiency and economic benefits of the proposed method.
