"Quasi Dynamic simulations allow us to analyse the load flow data over time, combining power monitoring and system modelling, instead of using momentary loading. This allows us to get a better overview of the site consumption, especially when considering additional load on the system."
Power Systems Engineer
Load Flow Study Using Quasi-Dynamic Simulation
Due to additional equipment being added to a client site, a load flow study was requested. In order to get the most accurate results we performed a quasi-dynamic simulation using DIgSILENT Power Factory 2023 which allows multiple load flow calculations to be carried out in a single simulation.
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Power System Consultants
In order to get the most accurate results we performed a quasi-dynamic simulation using DIgSILENT Power Factory 2023 which allows multiple load flow calculations to be carried out in a single simulation.
Thankfully we have our PME system installed on this site with a network of ION 9000 power meters so we were able to collect all the data required, and input that into the model (average current over 15 min intervals in kVA and Amps).
The primary focus of the study was to determine if any circuit breakers, cables, or transformers would exceed their designed ratings during maximum load conditions due to the addition of 2 large loads, and whether the site would remain within its max import capacity (MIC) or would need to request an increase.
The results of the simulation concluded the MIC needed to be increased in order to accommodate the additional equipment, as well as upgrading some of the protective devices to accommodate the new loads. This saved the client from equipment failure and being penalised by their energy provider.