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The present application relates to power distribution system technical field, especially to distributed intelligent power distribution network self-healing control method and system.The method comprises the following steps: step S1, real-time collection of distributed intelligent power distribution network operation data; step S2, fault detection; step S3, parallel protection control; step S4, building fault section positioning model and island division model, and positioning fault section according to fault section positioning model, and dividing island according to island division model; step S5, building double-target optimization model; step S6, solving double-target optimization model according to improved ant colony algorithm, and obtaining optimal switch action table; step S7, safety check of optimal switch action table, and self-healing control of distributed intelligent power distribution network according to safety check result; step S8, feedback of self-healing control situation of distributed intelligent power distribution network.The present application improves fault recovery speed, accuracy and reliability of distributed intelligent power distribution network.

This invention discloses an optimized method for deception jamming of frequency-hopping radar based on a four-dimensional antenna array. This method addresses the problem of existing four-dimensional antenna arrays failing to jam against broadband radars with rapidly changing frequencies due to beam squint effects. It constructs a broadband array pattern model with the entire radar frequency hopping point set as variables and establishes a hierarchical optimization cost function. This function prioritizes suppressing the echo from the true target direction to below a safe threshold across the entire frequency band, and then maximizes the minimum gain in the direction of the false target. A differential evolution algorithm is used to globally optimize the RF switching timing parameters of each array element, obtaining a set of frequency-independent robust optimal timing sequences. Loading these timing sequences into the controller enables the four-dimensional antenna array to stably achieve deception jamming effects that conceal the true target and enhance the false target across the entire frequency hopping bandwidth of the radar without real-time adjustments. This effectively overcomes the aperture crossing effect and ensures the robustness of jamming when the enemy radar frequency changes.