[Objective] Aiming at the coordination and optimization problem between operation economy and user satisfaction caused by the high proportion of wind and solar energy access to the distribution network
as well as the uncertainty of wind and solar output
a two-stage distributionally robust optimal dispatch method considering user satisfaction constraints in demand response for active distribution networks is proposed
to achieve coordinated optimization of economic efficiency and user satisfaction. [Methods] An optimization model for distribution network reconfiguration was developed
which considered demand response and user satisfaction. The model aimed to minimize comprehensive costs
including network loss cost
wind and solar curtailment cost
electricity purchase cost
user compensation cost
and switch operation penalty cost. The Frank-Copula function was introduced to characterize the correlation between wind and photovoltaic power output. Typical scenario sets were generated using the K-means clustering method. A distributionally robust optimization model was then constructed based on confidence intervals of 1-norm and ∞-norm. A two-stage solution approach was adopted: the first stage determined the status of branch switching and energy storage
while the second stage optimized the power dispatch and demand response strategies. The column-and-constraint generation algorithm was employed to solve the established model. [Results] Taking the IEEE 33-node distribution network as an example
four scenarios were set up for simulation
and the results showed that the proposed method could effectively improve the clean energy consumption rate
reduce the operating cost
smooth the load curve
and take into account the user’s power satisfaction. Secondly
the sensitivity of the fuzzy set of the split blue rod was analyzed
and the results showed that the confidence interval increased
the uncertainty of wind and solar output increased
the conservatism of the model becomed higher
and the cost also increased. [Conclusion] The distribution network sub-blue rod optimization model considering user satisfaction in demand response significantly improves the operation economy and user satisfaction of the distribution network
and provides an effective way to solve the problem of high proportion of wind and solar energy access.