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Research On Islanding Strategy Of Active Distribution Network Including Distributed Power Generation And Microgrid

Posted on:2020-09-26Degree:MasterType:Thesis
Country:ChinaCandidate:K LuFull Text:PDF
GTID:2432330611992736Subject:Electrical engineering
Abstract/Summary:PDF Full Text Request
In recent years,the distributed power supply industry has developed rapidly,the state has strong support,and the development of key technologies has been progressing rapidly.The micro-grid and related technologies have received extensive attention from scholars at home and abroad.The concept of active distribution network including distributed power supply and microgrid enables grid companies to use flexible network topology to manage system trends and provide new solutions for distribution network fault recovery technology.The prerequisite for the research of active distribution network fault recovery technology is to pre-measure the microgrid power supply capability through reasonable methods and carry out reasonable planned island division to ensure that the island meets the power demand of more loads and recovers from the distribution network.In the stage,the distributed power supply and the excess power of the microgrid are utilized to ensure that the important load can quickly restore the power supply and reduce the power outage loss.In this paper,the power output model of various distributed power sources is studied,and the concept of risk power is expounded.On this basis,the external power supply capability model of the microgrid is obtained,and the calculation method of power supply capability evaluation of microgrid is studied.An island distribution model of active distribution network with distributed power supply and microgrid is established.The model takes the maximum load of the system to restore power supply,and considers the size of the load and its important level,which has high practicability.Finally,the external power supply capability of different microgrids is calculated by an example.The rationality and effectiveness of the proposed method are verified by the calculation of the improved IEEE 33-node active distribution network and a designated active distribution network in Qingdao.
Keywords/Search Tags:distributed power, micro-grid, active distribution network, power supply capability, islanding
PDF Full Text Request
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