A distribution model with batteries scattered among users vs a model with batteries concentrated by the distributor

The growing insertion of DG in the LV distribution networks will be accompanied to a large extent by the use of BESS. It is natural to think that the incorporation of these BESS will be driven by the spontaneous will of the users. However, that path has some drawbacks. We evaluate the difference between a location of BESS scattered by users and a location optimized by the distributor. We model a typical network of the metropolitan area of Buenos Aires (Argentina). We execute Monte Carlo simulations to randomly locate: residential consumption, photovoltaic DG and BESS. We obtain the performance of the network: losses, voltages, etc. Then, through some non-random runs but with intentionally targeted battery systems locations, we found the location that would be optimal for the grid in terms of losses and allowable voltages. The results indicate that a non-random location of BESS may be more convenient. This task could be part of the distributor's business. But a tariff and commercial arrangement would be necessary: carrying out an accounting netting of the energy and power excess (and network use) during midday to credit it during the evening. Investments in batteries could be incorporated into a special rate.