Expansion Planning of Urban Multi-energy Electricity-Gas-Heating Distribution Network Incorporating Electrical Reconfiguration

Urban multi-energy distribution network (UMEDN) belongs to the terminal of Energy Internet's planning and operation. The coordinated planning of UMEDN is vital to improve the reliability and economy of energy supply. From the perspective of energy distribution network, an electricity/natural gas/heat distribution network coupling model that integrates electrical reconfiguration is proposed. First, a mathematical model of energy hub (EH) is constructed. Then, considering the constraints of urban distribution network, gas distribution network, heat distribution network and EH, simulating the working condition of UMEDN by hourly time scale, aiming at the minimum total cost, a mixed integer quadratic programming model is established. The best type, time and location of energy source, pipelines and EH via the proposed model are obtained. The simulation results show that the collaborative planning and operation of UMEDN incorporating electrical reconfiguration and EH can significantly improve system reliability, and reduce the capacity of related equipment, decrease energy distribution loss and the overall costs of planning and operation. © 2019 Automation of Electric Power Systems Press.