Research And Development Of Wideband Synchronous Measurement Technology In Novel Power Grid Physical Simulation System

With the continuous consumption of fossil energy and the increasingly serious environmental problems,renewable energy power generation and corresponding grid forms are also continuously developed and applied,and discussions on the form and architecture of power grids and related technical research are also increasing.The power system dynamic simulation system has played an important role in the implementation of new technologies.Facing the new form of power system with high proportion of renewable energy and high proportion of power electronic equipment,traditional power system dynamic simulation is difficult to adapt to the new form of power system simulation in terms of system equipment and measurement equipment.Therefore,an experimental platform that adapts to the development of new forms of power systems is needed,through advanced measurement system equipment to quantitatively analyze the impact of renewable energy power generation and power electronic equipment on traditional power systems,and to meet the physical simulation and wideband of new forms of power systems with information measurement and analysis requirements.The main research contents of this paper are as follows:(1)Analyze the characteristics of the new form of power system,and conceive the design ideas and design methods that adapt to the new form of power grid physical simulation system.The power system physical simulation method based on the similarity theorem and power system parameter characteristics is used as the theoretical basis to support the design of the new form of power grid physical simulation system.Through the analysis of requirements,design the relevant parameters and components of the AC part of the new form of power grid physical simulation system.Through the analysis of the characteristics of the new form of power grid,the relevant interfaces and equipment for the access of renewable energy equipment and power electronic equipment are designed,and the Internet of Things technology and corresponding switching components are used to connect different components,and the corresponding groups are designed.Grid control plan to facilitate the construction of the control system of the new form of power grid physical simulation system.(2)Based on the measured data of renewable energy equipment,analyze the requirements of the new form of power grid dynamic simulation system for data measurement,information transmission and system control,select the main control board and peripheral hardware and build the architecture,and design an integrated data acquisition system.,Motor control,data communication and other functions of the wideband information acquisition control system,and build the corresponding hardware system according to the architecture.According to the functional requirements of the information acquisition control system obtained by the analysis,the program structure of the information acquisition control system is built,and the data acquisition subroutine,the motor control subroutine and the information transmission subroutine are designed,and the wideband information measurement algorithm is integrated.In order to meet the demand for the collection and analysis of large data volume information of the new form of power grid,and the demand for information communication.(3)Analyze the wideband information acquisition system to collect and analyze large amounts of data requirements,and design a wideband information master station platform that includes data storage,query,and real-time display.The built physical simulation system and information acquisition control system have been system tested,and the operation of the physical simulation system and the functions of the information acquisition system have been tested.Based on the above experimental system,a motor-related experiment is designed,the range of motor control parameters is obtained through simulation test,the function of the power grid information acquisition system is tested,and the actual motor simulation experiment is carried out to verify the validity of the simulation results.Designed power system related experiments,and verified the normal operation of the new form of power grid dynamic simulation system,information acquisition and control system,and communication with the upper computer database,as well as the adaptability to theoretical knowledge through experimental tests.