摘要
为了解决智能电网条件下的多目标电网规划问题,在智能电网的基本框架下,用电网投资值衡量电网规划方案的经济性,用需求侧的缺电损失衡量方案的可靠性,用网络的可用输电能力衡量方案的灵活性,用系统的扩展因子衡量方案的适应性,用电网的低限值线路介数因子衡量方案的抗毁性。在此基础上,建立了基于余弦排序理论的多目标电网规划数学模型。引入熵理论确定各指标的权重系数,有效地摆脱了权重取值的主观性。在高维坐标系中,利用待评价方案与理想方案对应的指标有向线段和理想指标有向线段之间的夹角余弦值进行比较,得到综合效益最佳的优化决策方案,为未来智能电网规划建设进行有效的指导。算例分析验证了该方法的有效性和可行性。
In order to solve the problem that the multi-objective transmission network planning under smart grid condition,under smart grid infrastructure,the investment cost of the planning schemes was applied to weight economic performance,the outage loss of customers was applied to measure the reliability of the schemes,available transfer capability of the network was applied to evaluate the flexibility of the schemes,the method of using the system expansion factor was applied to quantify the adaptability of the schemes,and the lowest limit value of the line betweenness was applied to assess the invulnerability of the scheme.On this basis,a multi-objective transmission network planning model based on cosine prioritizing theory was established.The entropy theory was introduced to determine the weight coefficients of indices and the value of weight could avoid to be judged by subjectivity.In the high-dimensional space,by comparing the cosine value between directed line segment in each scheme and ideal directed line segment in ideal scheme,the optimum scheme was obtained,so that it gives effective guidance for the future smart grid planning and construction.Analysis of an example verified the validity and feasibility of the method.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2012年第34期30-35,6,共6页
Proceedings of the CSEE
关键词
电力系统
多目标电网规划
余弦排序
综合指标集
智能电网
power system
multi-objective transmission network planning
cosine prioritizing
synthetic index set
smart grid
