The Influence Of The Distribution Generation Switching On The Electric Power System

With the development of economy and technology,the requirement of power supply quality and reliability of power grid is becoming higher and higher.There are some disadvantages in the traditional power grid in the load change,the safety and reliability of power supply.And the distribution generation as an important supplement,its advantages are obvious compared with the traditional power supply.It is mainly installed near the users.It can not only enhance the safety and stability of power supply,but also prevent the accident spreading to a wider range by cooperating with the traditional power grid.Due to the small capacity of the distributed power generation unit,it is easily affected by the load change.And its controlling and operating measures are not perfect,the distribution generation switching on the power system may bring some unstable factor.As a new type of power generation mode,such as photovoltaic power generation,wind power generation,biomass power generation,etc.,its active power output is easily affected by weather,environment and other factors.It will inevitably affect the power quality of power system.When the power quality is not qualified transient,it may cause the user’s important equipment trip or restart.The economic loss is sometimes difficult to measure.Through monitoring and running analysis of the operating condition of several distribution generation projects in Chongming Island,we can get the status report.We put forward the power quality parameters of the distribution generation switching on the power system,so as to improve the power quality level.Through the analysis and verification of the collected data,we find the solution,which lays the foundation for the research of the distribution generation switching on the power system.