考虑安全域的配电网重构二阶锥双层规划模型

随着配电网建设的逐步推进,配电网用户对供电可靠性要求越来越高,因此配电网在保证自身经济运行的同时,也必须提高对安全性能的保障。在经济性配电网重构二阶锥模型的基础上,加入对配电网安全性的优化,建立了考虑安全性和经济性的配电网双层规划模型。该模型上层目标为平均安全距离最大化,下层目标为有功网损最小化。针对该模型采用分层求解的方法将双层模型解耦,求解得到网损和安全距离最优的重构策略。算例选取扩展的IEEE RBTS Bus4系统,验证了该模型能有效降低配电网网损,并提高配电网安全性。

Distribution network reconfiguration based on second order cone bi-level programming considering security distance

With the gradual progress of distribution network reconfiguration, the demand of distribution network customer for power supply reliability is increasing. Therefore, the security performance of distribution network must be enhanced while ensuring its own economic operation. Based on the second order cone programming model and aiming at optimizing the economic performance of distribution network, a bi-level programming model is established by adding the optimization of distribution network security. The objective of upper level is to maximize the average security distance while the lower level is to minimize the active power loss. In order to solve this model, the bi-level model is decoupled by stratified solution. And then, the optimal reconfiguration strategy for guaranteeing power loss and security distance is gained. Simulation results based on the extending IEEE RBTS Bus4 system demonstrate the effectiveness of this model in reducing the power loss and improving the security of distribution network. This work is supported by National Natural Science Foundation of China (No. 51507052).