孤岛运行微电网能量动态优化研究

Research on Dynamic Optimization of Energy Operation in Off-grid Mode

孤岛运行微电网能充分发挥分布式电源效能,作为大电网的有益补充,其安全可靠性要求较高.在分析典型微电源约束条件的基础上,以最大化利用风能和太阳能为原则,建立了以微电网系统的综合运行成本最低为目标的能量优化模型.采用典型日能量调度策略,利用实数编码的遗传算法对可调度的微电源进行动态优化.仿真结果表明,该策略能够实时地根据自然资源条件和负荷变化需求,选择最优的动态微电源出力,实现良好的经济运行.

The nicrogrid in off-grid operation can give full play to the efficiency of the distributed genera- tions, and it can be used as a beneficial supplement to interconnected power grid. On the basis of analy- zing the typical power supply constraints, the energy optimization model is established in order to mini- mize the operational cost and maximize the use of wind and solar energy. Typical day energy scheduling strategy is used for dynamic optimization of micropower using real number coding genetic algorithm. The simulation results show that the method can select the optimal according to the prevailing conditions of the natural resources nomic operation of the system. dynamic unit commitment in the real time and the load change and achieve the eco-