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Research on influence of distributed generation on distribution network loss and evaluation method

Distributed generation (DG) is an important component of a smart grid. A large number of distributed power supply access to the distribution network will bring great challenges to the operation and control of the distribution network. At the same time, the evaluation method of DG access to distribution network is very scarce. According to the change of the network loss after the DG is connected to the actual distribution network, the influence of the DG on the distribution network loss is obtained, so as to guide the operation of each distributed power supply to achieve the purpose of reducing the loss. And the evaluation method of system influence index is put forward. The analysis results show that the index and the evaluation method can play a good role in actual projects.