Construction of Multi-Project Network Planning Based on BOM and Its Resource Leveling

For the manufacturing project of large and complex equipment, due to the large number of activities, and the complex structure of the project, there are often cases where multiple projects are going on at the same time, which might make the project's network planning extremely difficult. Based on the analysis of the BOM and classification characteristics of complex manufacturing equipment, this paper proposed an innovative method, which can decompose and transform the component units based on the BOM, so that the BOM of the complex project can be hierarchically optimized and simplified. Then it can be transformed into project network plan by Petri net unit transformation method, so as to realize the decomposition and arrangement of multiple project plans. On this basis, aiming at the problem of resource leveling in multi-project planning management, this paper proposes a genetic algorithm, which provides a transformation method for resource optimization. In addition, this paper presents a new genetic coding method and improves the crossover operation. Case study shows that the algorithm can solve the resource balance problem of multi-project planning successfully. Finally, in order to verify the effectiveness of the algorithm, the proposed algorithm is compared with the other two algorithms intuitively and quantitatively.