Abstract
In this paper, a multi-level control strategy for transmission congestion is proposed based on the active reconfiguration and islanding capability from active distribution network. The multi-level control strategy includes an active reconfiguration scheme pursuing the minimum tie line power between the transmission and distribution network, an active islanding scheme based on the multi-source characteristic of active distribution network and a demand response scheme. Case studies are carried out on a typical IEEE 30-bus system with a three-feeder active distribution network to verify the effectiveness of the proposed multi-level control strategy. Simulation results show that the strategy can contribute to congestion relief of transmission network to some extent, and guarantee the reliability index of the distribution network at the same time, which has a good engineering application prospect.
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