考虑统一潮流控制器的线路最大传输功率计算方法  

Calculation Method for Maximum Transmission Power with Unified Power Flow Controller

作　　者：张宁宇 刘建坤 周前 胡昊明 ZHANG Ningyu;LIU Jiankun;ZHOU Qian;HU Haoming(Electric Power Research Institute,State Grid Jiangsu Electric Power Co.,Ltd,Nanjing 211103,China)

机构地区：[1]国网江苏省电力公司电力科学研究院,南京211103

出　　处：《电力系统及其自动化学报》2018年第11期107-113,共7页Proceedings of the CSU-EPSA

摘　　要：为提高统一潮流控制器UPFC(unified power flow controller)最大功率调节范围的计算精度,将UPFC线路两端分别等效为虚拟发电机,以虚拟发电机有功(无功)最大(小)为优化目标,以串联侧等效电压源和并联侧等效电流源以及其余发电机无功出力为控制变量,考虑电网节点电压上下限和线路传输容量等约束条件的情况下,分别在UPFC、SSSC(static synchronous series compensator)和STATCOM(static synchronous compensator)3种控制模式下建立优化模型,并采用内点法进行求解得到线路最大有功、无功功率运行范围。最后,以南京西环网和苏州南部电网2个UPFC示范工程为例进行计算,结果验证了本模型的有效性。For the purpose of improving the calculation accuracy of the maximum power regulation range with unified power flow controller(UPFC),the two ends of UPFC’s branches are treated as an equivalent virtual generator.The maximum(minimum)active or reactive power is treated as an optimization objective.Meanwhile,the series equivalent voltage source and shunt equivalent current source of UPFC,as well as other generators’reactive power,are selected as control variables.In this way,optimization models can be formed in UPFC,static synchronous series compensator(SSSC)and static synchronous compensator(STATCOM)control modes,respectively,in which the constraints including the upper and lower limits of bus voltages and the transmission capacity are also considered.Afterwards,interior point method is used to acquire the optimal solution.Finally,two UPFC demonstration projects in Nanjing western looped power grid and Suzhou southern power grid are taken as numerical examples,and results prove the effectiveness of the proposed model.

关 键 词：统一潮流控制器 等效电源模型 静止同步串联补偿器 静止同步补偿器 内点法 

分 类 号：TM7[电气工程—电力系统及自动化]