| In recent years, the developmentof Distribution Generation in the distribution network has brought new technical problems. Distributed Generation is different from traditional centralized power generation which is in the term of long-distance transmission and large form, that is clean, environmentally friendly, economical and efficient, network and short circuit current of the distribution system are changed with the Distributed Generation. In view of these effects, this paper mainly discusses the impact of access of the Distribution Generation on the protection of the distribution network, and puts forward the corresponding solutions.Firstly, the change of short-circuit current of the distribution network is analyzed after the access of the Distributed Generation. Then the influence of the distributed power supply on the self-investment of the three-phase and standby power supply is studied. In the end, a new scheme of wide area protection is proposed to reduce the influence of the distributed power supply and the power quality. Simulation results show that the proposed scheme can achieve fast positioning and fault isolation. |
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