AUTHOR=Jia Dexiang , Zhou Yu , Wang Zhongdong , Ding Yuhao , Gao Hongda , Liu Jianye , Lv Ganyun 

TITLE=Optimization for Transformer District Operation Considering Carbon Emission and Differentiated Demand Response

JOURNAL=Frontiers in Energy Research

VOLUME=Volume 10 - 2022

YEAR=2022

URL=https://www.frontiersin.org/journals/energy-research/articles/10.3389/fenrg.2022.935659

DOI=10.3389/fenrg.2022.935659

ISSN=2296-598X

ABSTRACT=With the promotion of the "dual carbon" goal, a large number of distributed photovoltaic power are connected to the distribution network. Since the current operation optimization of low-voltage transformer district is based on single objectives such as economy and power reliability, the model is relatively simple and difficult to adapt to the large-scale access of photovoltaic. Therefore, this paper comprehensively considers carbon emissions, different load characteristics and differentiated demand response of the district, and proposes an optimization method for low-voltage transformer district operation under the photovoltaic background of the whole county. First, the typical structure of low-voltage transformer district is introduced. Secondly, the load types and characteristics of low-voltage transformer district are analyzed, and differentiated demand response models are established for different types of loads. Finally, taking the minimum economic cost and carbon emission as the objective, the low-voltage transformer district operation optimization model considering carbon emission and differentiated demand response was established by considering the voltage overrun of photovoltaic access point, substation capacity constraint and carbon emission constraint. The simulation results show that the model can effectively reduce the economic cost and carbon emissions of low-voltage transformer district, achieve more than 95% reasonable utilization rate of new energy in low-voltage transformer district, improve the lateral time distribution of load in low-voltage transformer district, and provide an effective means for low-carbon dispatching of distribution networks.