Modeling and application of a load management system for controllable appliances for low-voltage network planning

This contribution investigates the impact of load management system, based on the concretisation of section 14a German Energy Industry Act on the network status of the future supply task. For this purpose, both implementation variants of direct control and energy management system, as well as the prioritised control of individual controllable appliances types are examined. In addition, the influence of internal and network-side demand factors on the network status and the planning results is analysed. Furthermore, an end-year based planning without limited application of a load management system is compared with a two-year based planning with limited application. The contribution demonstrates that the application of internal demand factors and network-side demand factors as well as the prioritisation of controllable appliances have a significant impact on the resulting limit violations. In addition, network operator can reduce network expansion costs by redesigning networks directly for a longer planning horizon instead of only reacting to the reduction of loads with network expansion. In contrast, the application of a load management system according to the current legal situation does not lead to a reduction in costs and should not be considered in target network planning.