Research On Detection Technology Of Distributed Generation Connected To The Grid

In recent years,the country develop low-carbon economy vigorously,have issued a series of policy encouraging distributed renewable energy,the distributed generation ushered in the rapid development of our country.The increasing maturity of distributed technology reduces the cost of power generation.Distributed power sources provide economic and social benefits in terms of power consumption in remote areas,and are conducive to saving energy and protecting the environment,making users more reliable.However,the increased demand for distributed power grids has increased the difficulty of management.On the one hand,because of the distributed generation randomness and intermittent,volatility characteristics with blind disorderly access to grid poses a serious challenge to the safe operation of power grid.On the other hand,the product quality of distributed generation is uneven,manufacturers are numerous,distributed generation operation regulation to bring very great difficulty.In view of the distributed generation connected to the grid detection requirements,this paper studies the distributed generation characteristics connected to the grid,puts forward the detection requirements of distributed generation connected to the grid,and connecting with the domestic and foreign relevant test standards and test system,build contains type experiment,dynamic model experiments,mobile detection process and general testing platform,a complete distributed generation platform connected to the grid,puts forward the testing methods and processes of distributed generation connected to the grid.Paper main work is as follows:(1)Combed the distributed generation detection standards and the present situation of the platform at home and abroad,the distributed generation impact analysis and simulation,including the current voltage impact analysis,power quality analysis,low voltage across the impact analysis,an island characteristics impact analysis,impact analysis,wave characteristics analysis of output distribution system protection and the analysis of the transient voltage characteristic.The application detection requirement of distributed generation connected to the grid is put forward.(2)Based on the distributed generation characteristics connected to the grid,test content distributed generation connected to the grid was proposed in this paper,including power quality,power/voltage control characteristic,voltage/frequency response characteristics,protection performance and general performance,gives the specific detection index.(3)Combined with distributed generation connected to the grid testing standards at home and abroad,this paper introduces the type needed for distributed generation connected to the grid detection experiment,dynamic model experiments,motion detection and the whole process of general testing platform,to build the distributed generation connected to thegrid detection means complete.(4)Based on distributed generation connected to the grid detection platform,for the research of distributed generation connected to the grid method,covering the detection of power quality,power/voltage control feature detection,voltage/frequency response characteristics,protection performance,as well as the general performance,etc.(5)Put forward the distributed generation connected to the grid detection process,including the type of experiment,experiment,the dynamic model of production,on-site inspection,acceptance and routine testing and other links.