With the continuous development of China’s economy, the process of urbanisation and industrialisation has been accelerating, and coupled with the emergence of new energy, China’s urban energy consumption has undergone huge transformation. The urban energy Internet (UEI) is an important part of the country’s ‘carbon peak and carbon neutrality’, and it is also one of the key tasks in the planning, construction and operation of the power grid transformation. The traditional grid-side planning model relies on a single deterministic planning method, and there is less consideration for new influencing factors, which has been difficult to meet the energy demand in the context of the energy Internet. In this paper, research on UEI planning based on the fuzzy synthesis method is proposed. First, the basic architectural model of UEI is constructed. At the same time, the impact of distributed generation, energy storage, demand response, communication and other key technologies on the planning of active distribution networks in the distribution network planning under the UEI is analysed. Then, a fuzzy comprehensive method is proposed to calculate the weight of UEI planning. Finally, the planning and research of UEI prospects from the aspects of equipment form, system planning, operation control, business model and collaborative development are discussed.
Distribution network planning is an important task in the process of power grid construction and development. Scientific and rational planning is the key factor for the economic construction and reliable operation of the power grid. Aiming at the difficulty in quantifying the weight of distribution network planning schemes, a comprehensive evaluation method of distribution network planning schemes based on the interval-valued intuitionistic fuzzy analytic hierarchy process method is proposed. First, a comprehensive evaluation index system is established from the four aspects of power supply, namely reliability, economy, power supply quality and safety of the distribution network. Then, a comprehensive evaluation method of electricity reliability optimised by entropy weight method is adopted by analytic hierarchy process, which considers both subjective situation and objective weighting. At the same time, the comprehensive weight of the aggregation of the criterion layer and the scheme layer is calculated. Finally, the link between the aggregation matrix and the index weights of the criterion layer is used to calculate the weights of the scheme layer so that they can be sorted out. The experimental results show that the effectiveness and feasibility of the planning and analysis indicators and evaluation methods of the method proposed in this paper are verified by a numerical example.
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