基于无功电压分区的电压越限解决方案
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摘要
提出了一种分区处理电压越限的解决方案。传统的无功电压分区往往需经过多次分区及调整过程,文中通过牛顿拉夫逊潮流计算得到灵敏度矩阵,将PV节点和平衡节点加入由灵敏度矩阵形成的电气距离矩阵中,利用SAS(Statistical Analysis System)聚类分析只需一次聚类求取初始分区结果,再按照每个分区含有无功源的原则对分区结果进行优化调整。针对节点无功电压调节灵敏度不同的特点,提出了由电气距离矩阵确定电容器最佳配置地点和系统发生电压越限时无功调节设备的动作次序的方案,将系统有功网损和电压合格率作为目标函数来确定无功设备的最优动作值。通过IEEE30算例系统表明分区处理电压越限可以减少无功设备的动作次数和加快越限节点电压的恢复,验证了该方法的有效性。
A solution of voltage beyond limits by partition is proposed in this paper. The traditional reactive power voltage network partition often needs to be partitioned and adjusted for several times,this paper calculates sensitivity matrix by the Newton-Raphson method. And this paper adds PV nodes and the slack node to the electrical distance matrix which is obtained from the sensitivity matrix. After calculating the original partitions with SAS software merely by one time clustering,this paper adjusts the partitions according to the principle which each partition should contain a reactive power source.Due to the different sensitivity of reactive voltage regulation of nodes,the best location of the capacitor and the operation sequence of reactive equipment are determined by the electrical distance matrix. And it determines the optimal operating value of the reactive equipment through considering the system active power loss and voltage qualification rate as the objective function. The effectiveness of the proposed method is verified through the IEEE-30 example system. And the method of voltage beyond limits by partition could reduce the number of device actions and accelerate the recovery of the voltage.
A solution of voltage beyond limits by partition is proposed in this paper. The traditional reactive power voltage network partition often needs to be partitioned and adjusted for several times,this paper calculates sensitivity matrix by the Newton-Raphson method. And this paper adds PV nodes and the slack node to the electrical distance matrix which is obtained from the sensitivity matrix. After calculating the original partitions with SAS software merely by one time clustering,this paper adjusts the partitions according to the principle which each partition should contain a reactive power source.Due to the different sensitivity of reactive voltage regulation of nodes,the best location of the capacitor and the operation sequence of reactive equipment are determined by the electrical distance matrix. And it determines the optimal operating value of the reactive equipment through considering the system active power loss and voltage qualification rate as the objective function. The effectiveness of the proposed method is verified through the IEEE-30 example system. And the method of voltage beyond limits by partition could reduce the number of device actions and accelerate the recovery of the voltage.
引文
[1]郭庆来.基于无功源控制空间聚类分析的无功电压分区[J].电力系统自动化,2005,29(10):36-40.
[2]Huang Kai,Gao Shan,Gu Quan.Research on partition for automatic voltage/var control based on electrical distance to generator[C].Innovative Smart Grid Technologies-Asia.IEEE,2012:1-4.
[3]Tao Jiang.Spectral clustering-based partitioning of volt/VAR control areas in bulk power systems[J].let Generation Transmission&Distribution,2017,11(5):1126-1133.
[4]Wang Yansong,Zhao Jinli,Zhang Fei,et al.Study on structural vulnerabilities of power grids based on the electrical distance[C].Innovative Smart Grid Technologies-Asia.IEEE,2012:1-5.
[5]姜鹏飞.基于聚类的无功电压控制分区算法研究以及AVC在地区电网的应用[D].华南理工大学,2014.
[6]高道春.基于无功电压满维灵敏度的大规模风电场电网VCA方法研究[J].电力系统保护与控制,2011,39(8):11-17.
[7]熊虎岗.基于免疫-中心点聚类算法的无功电压控制分区[J].电力系统自动化,2007,31(2):22-26.
[8]周琼.风电接入下基于AP聚类的无功功率-电压控制分区方法[J].电力系统自动化,2016,40(13):19-27.
[9]鲍威,朱涛,赵川,等.基于聚类分析的三阶段二级电压控制分区方法[J].电力系统自动化,2016,40(5):127-132.
[10]陈厚合,运奕竹,邢文洋,等.基于聚类分析方法的电力系统负荷节点分区策略[J].电力系统保护与控制,2013,41(12):47-53.
[11]顾伟.配电网无功电源的逐次规划算法[D].东南大学,2004.
[12]付英杰.考虑分布式电源的配电网电压控制新方法[J].电力系统及其自动化学报,2015,27(6):26-31.
[13]S.Wang.Optimization of reactive power in distribution network with hierarchical clustering and ant colony algorithm[J].Power System Technology,2011,35(8):161-167.
[14]胡彩娥.用电力系统分区方法确定无功源最佳配置地点[J].电力系统及其自动化学报,2004,16(3):46-49
[15]Meng Q,Che R,Gao S.Reactive Power and Voltage Optimization Control Strategy in Active Distribution Network Based on the Determination of the Key Nodes[J].Materials Science and Engineering,2017,199(1):01210
[16]张伯明,陈寿孙,严正.高等电力网络分析[M].北京:清华大学出版社,2007:312.
[17]李昌超,鲁宝春,陈凤英,等.基于向量相似度的无功电压分区方法的研究[J].电力系统保护与控制,2014,42(14):14-18.
[2]Huang Kai,Gao Shan,Gu Quan.Research on partition for automatic voltage/var control based on electrical distance to generator[C].Innovative Smart Grid Technologies-Asia.IEEE,2012:1-4.
[3]Tao Jiang.Spectral clustering-based partitioning of volt/VAR control areas in bulk power systems[J].let Generation Transmission&Distribution,2017,11(5):1126-1133.
[4]Wang Yansong,Zhao Jinli,Zhang Fei,et al.Study on structural vulnerabilities of power grids based on the electrical distance[C].Innovative Smart Grid Technologies-Asia.IEEE,2012:1-5.
[5]姜鹏飞.基于聚类的无功电压控制分区算法研究以及AVC在地区电网的应用[D].华南理工大学,2014.
[6]高道春.基于无功电压满维灵敏度的大规模风电场电网VCA方法研究[J].电力系统保护与控制,2011,39(8):11-17.
[7]熊虎岗.基于免疫-中心点聚类算法的无功电压控制分区[J].电力系统自动化,2007,31(2):22-26.
[8]周琼.风电接入下基于AP聚类的无功功率-电压控制分区方法[J].电力系统自动化,2016,40(13):19-27.
[9]鲍威,朱涛,赵川,等.基于聚类分析的三阶段二级电压控制分区方法[J].电力系统自动化,2016,40(5):127-132.
[10]陈厚合,运奕竹,邢文洋,等.基于聚类分析方法的电力系统负荷节点分区策略[J].电力系统保护与控制,2013,41(12):47-53.
[11]顾伟.配电网无功电源的逐次规划算法[D].东南大学,2004.
[12]付英杰.考虑分布式电源的配电网电压控制新方法[J].电力系统及其自动化学报,2015,27(6):26-31.
[13]S.Wang.Optimization of reactive power in distribution network with hierarchical clustering and ant colony algorithm[J].Power System Technology,2011,35(8):161-167.
[14]胡彩娥.用电力系统分区方法确定无功源最佳配置地点[J].电力系统及其自动化学报,2004,16(3):46-49
[15]Meng Q,Che R,Gao S.Reactive Power and Voltage Optimization Control Strategy in Active Distribution Network Based on the Determination of the Key Nodes[J].Materials Science and Engineering,2017,199(1):01210
[16]张伯明,陈寿孙,严正.高等电力网络分析[M].北京:清华大学出版社,2007:312.
[17]李昌超,鲁宝春,陈凤英,等.基于向量相似度的无功电压分区方法的研究[J].电力系统保护与控制,2014,42(14):14-18.