Construction And Application Of Power Grid Distributed Optimization And Control Platform

Many factors,for example the renewable energy integration into grid,the comprehensive utilization of multi-energy-system,and the extensive penetration of active loads such as energy storage and electric vehicles,are making the power grid more and more diverse,flexible,associative,and distributed.The traditional methods based on top-down centralized dispatching and control thinking are difficult to adapt to complex power grid forms.Therefore,analysis and control of power grid operation must be transformed to a distributed approach,and this is also the concept advocated by Energy Internet.Facing this change,under the conditions of complete measurement,positioning,communication,and Internet technology,it is of great theoretical significance and engineering value to study how to build a distributed operation and control platform for high-proportion acceptance and efficient use of new energy.On the basis of reviewing and summarizing the research status at home and abroad,this paper has carried out more detailed exploration and research on the establishment and application of the distributed analysis,optimization and control platform for power grids.The main work completed and the beneficial results obtained are as follows:(1)Under the background of the Energy Internet,it is clarified that the distributed optimization and control platform should have the functions of inheritance,universality,distribution,collaboration,and openness.And the platform hardware structure is given,which uses measurement and control equipment as peripheral terminals,communication networks as transmission media,and computing devices as the core computing system.Then through the analysis of the status of hardware structure,the platform working conditions are defined including complete measurement,accurate control and unobstructed network,which are the application foundation of the platform.(2)Explain and summarize the functions and advantages of the Multi-Agent System and the development framework JADE as the basic development software for analysis,optimization,and control platform.The basic functional modules,the realization of communication functions,and the operating mechanism of the platform are analyzed in detail through the actual program.Then combine the above functions,put forward the overall operation flow of the distributed platform,and complete the platform software implementation.(3)A nodal load correlation forecasting method is proposed,which uses the idea of state estimation to make full use of the nodal physical correlation and measurement information to perform nodal load forecasting.The forecasting process is characterized by distribution and information interaction.Therefore,it is suitable for applicating on the distributed optimization and control platform.Then according to the clear steps of environment configuration,database design,application flow design,program development and case verification,the nodal load correlation forecasting application is implemented on the platform and verified by actual power grid cases.(4)Integrate and coordinate advanced applications such as nodal load correlation forecasting,distributed coordinated economic dispatching,and transmission-distribution coordinated power flow calculation on the distributed optimization and control platform.The problems and solution brought by the applications integration are analyzed from the aspects of database planning,process design and program development.Finally,the validity of the applications integration and operation of the platform under actual grid cases is verified through the form of interface display.This paper summarizes the framework,process,configuration and application of the power grid distributed optimization and control platform,and analyzes the integration of advanced applications on the platform.It has important guiding significance for the follow-up platform upgrade,the integration of theoretical resources and research results.And the platform has passed the data validation of the actual power grid,so it also has a higher practical value.