Power Control Strategy of Flexible Interconnection System in Distribution Network

Aiming at the problem of imbalance load of feeder lines and reverse photovoltaic power flow in distribution network, the flexible interconnection scheme based on full-power converter is the key to realize intelligent control of distribution network. In this paper, a power control strategy for flexible interconnection system is proposed, which including heavy-load limiting control for the rational power distribution when some feeder lines are heavy-loaded, and power balance control for that all feeders are heavy-loaded to relieve the power supply pressure of flexible interconnection devices (FIDs). Case study based on real load data verifies that the proposed strategy can cope with different seasonal distribution network scenarios with different load characteristics and different degrees of reverse photovoltaic power flow. The proposed can suppress forward and reverse heavy load flow, and improve the power supply safety and efficiency of the distribution network.