| Isolated micro-grid is an effective way to solve the problem of power supply in isolated island and remote area. Optimizing dispatching theory,as the core theory of micro-grid, is very important for its development and popularization, so it has very high research value. In this paper, taking the wind/light/fuel/battery isolated micro-grid system as the research object.Using the new bat algorithm optimize dispatching problem of micro-grid.The main works are described as follows:(1) A new bat algorithm is proposed for solving complex nonlinear problem. And comparing new bat algorithm with bat algorithm, particle swarm algorithm and cuckoo search algorithm. Experiment result shows that the optimization, precision and convergence rate of new bat algorithm are better, and the excellence of the algorithm is verified.(2) Studying operation control strategy of storage battery. Aiming at shortcoming of traditional control strategy, this paper puts up a dynamic control strategy to strengthen control ability of battery charge-discharge,reduce the peak valley difference of load and system’s cost. Using new bat algorithm solves load variance of different charge-discharge times and strategies. Experiment data shows that the effectiveness of the proposed control method is verified.(3) This paper establishes a single objective optimization model of isolated micro-grid. Constraint conditions include system power balance,output power of micro-source, battery’s charge-discharge balance, battery’s depth of charge-discharge. Objective function is the minimum of fuel cell generation cost. And By the new bat algorithm to solve the relationship between fuel cell power generation cost and battery charge-dischargebalance, and optimize the output status of each generating unit based on different charge-discharge balance.(4) Based on KINGVIEW software to develop a monitoring system for isolated micro-grid. The designing process of the system is described and monitoring interface is designed in this paper. |
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