摘要
为了有效减少电力系统运行时电网中消耗的有功网损值,以母线负荷过载情况下电力系统网损不均衡电网为研究对象,建立有功网损数学模型,在满足各控制变量和状态变量的等式及不等式约束条件下,进行在线实时优化潮流计算.对计算结果中网损较大支路,分别采用无功补偿法、调节电压法、改变支路横截面积法来降低电网总有功网损值,并比较在电网总有功网损值恢复过程中3种方法的补偿当量.以IEEE14作为算例,验证了本文方法的有效性.其结果可为电网工作人员采取合理的组合降损措施提供可靠的数据依据.
In order to study how to effectively reduce the active power loss value which is consumed by the running power grid system,the unbalanced losses of power grid system is taken under the overloading bus as the investigative object.Not only an active power loss mathematical model is established,but also an online real-time optimization flow calculation within the situation that meets all of the control variables and state variables of the equation and inequality constraints is carried out.For some larger network loss branches in the calculated results,three methods,i.e.reactive power compensation method,voltage regulation method and changes in cross-sectional area branch method,is respectively adopted to reduce the total active power loss values.Besides,the compensation equivalent of three methods in the recovery process of total active power loss are compared in the power grid.By taking IEEE14 as an example,the effectiveness of the proposed method is verified.Moreover,some reliable data are provided which can be taken as a basis for the grid staff.
出处
《宁夏大学学报（自然科学版）》
CAS
2015年第3期238-241,共4页
Journal of Ningxia University(Natural Science Edition)
基金
国家自然科学基金资助项目(51177099)
上海市科委项目(10160501700)
关键词
有功网损
最优潮流
无功补偿
调节电压
横截面积
active power loss
optimal power flow
reactive power compensation
voltage regulation
cross-sectional area
