Faculty of Energy and Electrical Engineering, Qinghai University, Xining, China.
Qinghai Key Lab of Efficient Utilization of Clean Energy, Qinghai University, Xining, China.
PLoS One. 2024 Sep 19;19(9):e0308450. doi: 10.1371/journal.pone.0308450. eCollection 2024.
On the basis of predecessors' coordination optimization of active and reactive power in distribution network, For the necessity of the optimal operation in the distribution network, part of power generated from photovoltaic (PV) cannot be sold to users, and cannot enjoy subsidies. Similarly, the network loss in the power transmission will also bring a certain economic loss. This paper comprehensively considers the economic loss caused by the network loss and PV abandon of the distribution system, and establishes a model to minimize the economic loss. To solve this problem efficiently, the method of DistFlow equation and mixed integer second order cone programming (MISOCP) is used to solve the problem, in this method, the original mixed integer nonlinear programming non-convex problem is transformed into a convex problem, which makes the optimization problem easy to solve. The modified IEEE 33 and IEEE 69 distribution networks are tested by the above method. The optimized results are able to meet the target and have very small relaxation gaps, and the voltage level is also optimized. This coordinated optimization approach helps to optimize the economic operation for active distribution networks with PVs.
在前人对配电网有功和无功协调优化的基础上，为了实现配电网的优化运行，部分光伏发电无法向用户出售，也无法享受补贴。同样，输电网损也会带来一定的经济损失。本文综合考虑了配电网网损和光伏弃电所造成的经济损失，建立了以经济损失最小为目标的模型。为了有效解决该问题，采用 DistFlow 方程和混合整数二阶锥规划（MISOCP）方法进行求解，该方法将原有的混合整数非线性规划非凸问题转化为凸问题，使优化问题易于求解。通过上述方法对修改后的 IEEE 33 和 IEEE 69 配电网进行测试，优化结果能够满足目标且松弛间隙很小，同时优化了电压水平。该协调优化方法有助于优化含光伏的主动配电网的经济运行。
