基于安全因子及协同因子的源网多目标协调规划

Multi-Objective Coordinated Planning of Source Network Based on Safety Factor and Coordination Factor

在含分布式电源的配电网系统中,其源网协调规划不仅需要考虑经济成本,更应考虑其安全及协调问题。考虑安全性,将线路阻塞补偿成本加入传统经济性目标函数中,并分别考虑分布式电源和电网线路的安全性,定义了"安全因子",作为系统安全性目标函数,以提高其安全能力;考虑协调性,从源、网两侧的输电协调性及结构协调性考虑,提出"协同因子",作为协调性目标函数,以增强两侧的协调能力。根据以上分析,建立基于安全因子及协同因子的源网多目标协调规划模型,并采用多目标细菌群体趋药性算法及折中解方法确定规划结果。最后,以IEEE33系统为例进行仿真研究,通过与单目标模型对比,验证所提模型的优越性;通过目标函数的灵敏度分析,验证所提安全性及协调性目标函数的可行性。

In the distribution network system with distributed generation,it should be considered in the coordinated planning of the source network,not only economic cost but also safety and coordination.The line blocking compensation cost is added to the traditional economic objective function.The"safety factor"is defined as the system security objective function to improve its security capability with considering the security of distributed generation and grid line respectively.A"coordination factor"is proposed from the transmission coordination and structural coordination on both sides of the source and network.It is regarded as the coordination objective function to enhance the coordination ability on both sides.A multi-objective coordinated planning model is established based on safety factor and coordination factor.The planning result is determined by the multi-objective bacterial colony chemotaxis algorithm and the method of compromise solution.Finally,the IEEE 33 system is taken as an example for simulation research.The superiority of the proposed model is verified by comparing with the single-objective model.Through sensitivity analysis of the objective function,the feasibility of the proposed security and coordination objective function is verified.