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The electromagnetic launch system (EMLS) is a kind of large-scale complex system with strong mechanical, electrical, and hydraulic coupling. The effective operation of the system requires the support of advanced and reliable health management system, and the function of the health management system relies on the network traffic to complete data transmission and interaction. Through protocol filtering and time-frequency characteristic analysis of network traffic, it is found that the system mainly includes CIP and TCP; traffic of CIP shows continuity and stability, while traffic of TCP shows sparsity and impact. Based on the analysis of traffic characteristics, an SVR-ARMA network traffic model is established, which improves the prediction accuracy and performance of network traffic and provides a reliable technical guarantee for the fault diagnosis and health management of the EMLS.

In order to reduce the impact of current and voltage effectively, when the dual-mode inverter grid-connected/off-grid mode transfer in the micro-grid system. There is a uncontrollable parameter perturbations influence in the transfer process of grid-connected/off-grid. This paper presents micro-grid dual-mode inverter which take H ∞ robust controller in current inner loop, reducing external disturbances and parameter perturbations influence, and enhancing power quality during grid-connected/off-grid mode transfer. Relying on a southern reef stand-alone micro-grid system project, taking simulation and experimental tests, comparative analysis with traditional PI control shows the superiority of the proposed scheme.

Micro-Grid with hybrid energy systems is essentially a muti-objective, muti-constrant problem, and it is a challenge that Micro-Grid system to achieve optimal economy and stability of the system. An improve PSO-based energy management under two-time scale is proposed in this paper to accomplish this task. Based on different time scales, the energy manegement consists of day-ahead scheduling and real-time shceduling. The main purpose of day-ahead scheduling is to achieve economy optimal scheduling and real-time shceduling maintain the stability of the system. The real-time scheduling is carried out according to day-ahead shceduling and to modify the deviation of day-ahead scheduling by correction plans. Simulation and experimental results show that this method can effectively guarantee the economy and stability of the system.

For Micro-Grid in islanded operation, due to the effects of mismatched line impedance, the real and reactive power could not be shared accurately with the conventional droop control method, which would likely cause circulation current problems. Generally, the real power sharing is achieved by P-f droop control equation and the reactive power by Q-V. This study present an improved scheme for adaptive droop coefficients to share the burden according to the available headroom of each converter station. Real-time simulation results show effectiveness and feasibility performance of the proprosed adaptive droop control.