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| Preliminary Study on Stand-Alone Microgrid Invulnerability Planning in Important Areas |
| Huang Shuai1,2,Long Yan1,Zhao Hongwei1,Feng Ping1,Wang Honglin1 |
1.Department of Machinery & Electrical Engineering Logistical Engineering University Chongqing 401331 China;
2.Department of Petroleum Supply Engineering Logistical Engineering University Chongqing 401331 China |
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Abstract Concerning the vulnerability of the important regional distribution network in extreme conditions,planning of the stand-alone microgird aiming at invulnerability is studied on the basis of a gradually mature microgrid technology.Firstly,an invulnerability index applied to the microgird is established through the theoretical derivation on the situation of a single distributed generation (DG) supplying a single load.Then the complex networks theory is introduced to optimize the applications of index.To solve an actual problem of the stand-alone microgrid planning in a certain important area,a joint planning model incorporating the DG locating and sizing model and the network planning model is established to optimize the suggested invulnerability index.With the varying number of iterations,the invulnerability indices and the corresponding grid structure and DG distribution are obtained.Finally,the invulnerability index is assessed in a simulated network attacking situation based on an attack strategy.The results show that the proposed index can clearly reflect the network invulnerability,and the joint planning method can effectively enhance the network invulnerability.
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Received: 16 March 2015
Published: 16 March 2016
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2016, Vol. 31 
