# Distribution Network Modeling and Management

## Abstract

This chapter first examines balanced and unbalanced electric distribution network modelling techniques and then tests their effects on power flow analysis with practical electric distribution networks. Test results show that distribution network operating conditions obtained from the balanced and unbalanced model-based power flows may have obvious difference in terms of voltage violations and overloaded equipment. These results demonstrate the importance of adopting unbalanced network modelling in improving the accuracy of power flow. Furthermore, this chapter presents an unbalanced model-based DMS application in loss reduction, an essential application for the energy efficiency improvement in electric distribution networks. The loss reduction often involves the control of reactive power (VAR) resources to optimize the VAR flow in the distribution network. Based on the unbalanced power flow model, an advanced loss reduction approach is developed to achieve the optimal control coordination among multiple capacitors and distributed energy resources such as solar and wind resources. The effectiveness of the presented approach is demonstrated on practical utility distribution networks with varying degree of unbalance and model complexity.

## Keywords

Electric distribution network modelling Distributed energy resource Distribution management system Power flow Loss reduction## References

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