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基于最小不匹配函数的低压减载算法研究
引用本文:马平,蔡兴国,于继来,刘振平,孙富华,单明.基于最小不匹配函数的低压减载算法研究[J].中国电机工程学报,2005,25(1):0-31.
作者姓名:马平  蔡兴国  于继来  刘振平  孙富华  单明
作者单位:1. 哈尔滨工业大学电气工程及自动化学院,黑龙江省,哈尔滨市,150001
2. 鞍山供电公司,辽宁省,鞍山市,114002
基金项目:黑龙江省自然科学基金项目(E-0321)。~~
摘    要:为了恢复故障后潮流的可解性,提出了一个新的算法用来决定最小负荷减载问题。应用Damped Newton-Raphson法,以潮流方程的不匹配函数最小为优化目标,来识别弱节点,以确定最佳减载策略;将求解最小不匹配函数获得的最弱节点电压设为已知量,将负荷减载节点的负荷承载系数作为一个新的未知量,以计算修改后的最小不匹配函数,估计最小负荷减载量,并应用简单的P-V曲线法对估计结果进行修正,以提高计算精度。通过New-England 39节点系统和IEEE 30节点系统算例表明,此算法简单有效,易于实现。

关 键 词:匹配函数  算法研究  节点  IEEE  系统  算例  恢复  优化目标  策略  决定
文章编号:0258-8013(2005)01-0027-05
收稿时间:2004-06-04
修稿时间:2004年10月8日

A STUDY ON A UNDERVOLTAGE LOAD SHEDDING STRATEGY BASED MINIMUM MISMATCH FUNCTION
MA Ping,CAI Xing-guo,Yu Ji-lai,LIU Zhen-ping,SUN Fu-hua,SHAN Ming.A STUDY ON A UNDERVOLTAGE LOAD SHEDDING STRATEGY BASED MINIMUM MISMATCH FUNCTION[J].Proceedings of the CSEE,2005,25(1):0-31.
Authors:MA Ping  CAI Xing-guo  Yu Ji-lai  LIU Zhen-ping  SUN Fu-hua  SHAN Ming
Affiliation:MA Ping1,CAI Xing-guo1,Yu Ji-lai1,LIU Zhen-ping2,SUN Fu-hua2,SHAN Ming2
Abstract:A new minimum load shedding approach is proposed to restore post-contingency system solvability. Using the damped Newton-Raphson methed, the system minimum mismatch function is calculated to identify the weakest bus and determine the most effective load shedding strategy. The weakest bus voltage of minimum mismatch solution is set as known parameter and the scaling load coefficient of the shedding load bus as unknown in the power flow equations, then solve the modified mismatch function to estimate the minimum amount of load shedding. The amount can be refined by a simple PV curve method. The proposed approach is illustrated with the New-England 39-bus system and the IEEE30-bus system. The results show that the approach is very simple and efficient and is easy to be implemented.
Keywords:Electric power engineering  Power system  Voltage collapse  Undervoltage load shedding  Power flow  solvability  Minimum mismatch function
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