山东大学硕士学位论文 ABSTRACT SCADA-based optimization of the whole network of distributed voltage and reactive power control system is a distributed control system voltage and reactive power optimization,through the dispatch automation SCADA systems capture the whole network each node telemetry,remote real-time data on-line analysis and calculations,in the to ensure the safe operation of power network and equipment, under the premise of each node voltage pass mark for the power factor constraints, from the perspective of the entire network for optimal control of voltage and reactive power,reactive power compensation equipment,inputs to achieve a reasonable and non-hierarchical local power balance and stabilize the voltage to achieve main transformer tap-changing times for at least the most reasonable and capacitor switching, voltage compliance rates and the minimum transmission power loss rate of the overall optimization goal.With this system dispatching automation system,"four remote" function,using computer technology and network technology,through the SCADA system to automatically perform operations command,in order to achieve the grid substations within the OLTC and the concentration of reactive power compensation equipment monitoring,centralized management and centralized control of regional power grid voltage and reactive power to achieve optimal operation of closed-loop control. In this paper,the system objectives and solutions to issues of profiling,the system's functional requirements and non-functional requirements are described in detail,and system requirements in order to flow chart and use case diagram in the form in detail. On the demand based on the analysis of the system architecture design objectives and principles are described,and through network architecture,logical structure, physical structure of three aspects of the system architecture design for analysis. Technical Architecture major consideration system scalability,maintainability and n山东大学硕士学位论文 ABSTRACT SCADA—based optimization of the whole network of distributed voltage and reactive power control system is a distributed control system voltage and reactive power optimization，through the dispatch automation SCADA systems capture the whole network each node telemetry，remote real—time data on—line analysis and calculations，in the to ensure the safe operation of power network and equipment， under the premise of each node voltage pass mark for the power factor constraints， from the perspective of the entire network for optimal control of voltage and reactive power，reactive power compensation equipment，inputs to achieve a reasonable and non—hierarchical local power balance and stabilize the voltage to achieve main transformer tap—changing times for at least the most reasonable and capacitor switching， voltage compliance rates and the minimum transmission power loss rate of the overall optimization goal．With this system dispatching automation system，”four remote” function，using computer technology and network technology，through the SCADA system to automatically perform operations command，in order to achieve the grid substations within the OLTC and the concentration of reactive power compensation equipment monitoring，centralized management and centralized control of regional power grid voltage and reactive power to achieve optimal operation of closed-loop contr01． In this paper,the system objectives and solutions to issues of profiling，the system’S functional requirements and non-functional requirements are described in detail，and system requirements in order to flow chart and use case diagram in the form in detail． On the demand based on the analysis of the system architecture design objectives and principles are described，and through network architecture，logical structure， physical structure of three aspects of the system architecture design for analysis． Technical Architecture major consideration system scalability，maintainability and III