Configuration Optimization of Capacity of Standalone PV-Wind-Diesel-Battery Hybrid Microgrid
Configuration Optimization of Capacity of Standalone PV-Wind-Diesel-Battery Hybrid Microgrid
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作者：
Chen Zinian
独立光伏-风电-柴油-电池混合微电网通过微电网内的电源向本地负荷供电，首要目标是最大限度地提高发电功率与负荷之间的耦合。为了在保证供电可靠性的同时提高整个微电网的经济性，需要根据现有的条件和资源进行微电网容量配置的优化设计，并选择最优的电源容量组合。分别建立了独立光伏-风电-柴油电池混合微电网中不同类型电源的数学模型，基于该混合系统的调度策略和约束条件，以不同电源的数量为变量，以综合成本和费用最小为优化目标，利用遗传算法求解系统中不同电源的最优容量配置，并通过算例验证了模型的合理性。
Standalone PV-wind-diesel-battery hybrid microgrid supplies power to local loads by power sources within the microgrid,and the primary target is to enhance the accouplement between the generated power and the load maximally.To improve the economy of whole microgrid while the power supply reliability is ensured,it is necessary to perform optimal design of capacity configuration of the microgrid according to existing conditions in whether and resources and to choose optimal source capacity combination.Mathematical models for different kinds of power sources within the standalone PV-wind-diesel-battery hybrid microgrid are established respectively,and two economic models of investment cost and different expenses are built too.Based on the dispatching strategy and constraints of this hybrid system,the numbers of different power sources are taken as variables and the minimum composite cost and expenses as optimization objective,and then the optimal capacity configurations of different power sources in the system are solved by genetic algorithm.The reasonableness of the proposed models is verified by case study results.