基于模态法的分布式发电并网研究  

Study of distributed generation paralleling in grid based on modal method

作　　者：刘迎迎[1] 刘菲[2] 林红梅 

机构地区：[1]东北电力大学电气工程学院,吉林吉林132012 [2]吉林供电公司,吉林吉林132012 [3]前郭尔罗斯县供电有限公司,吉林松原138000

出　　处：《黑龙江电力》2013年第6期515-517,共3页Heilongjiang Electric Power

摘　　要：传统的潮流计算方法已经不能满足分布式发电(DG)的需要。为此,结合配电网自身的特点,提出了用模态法研究DG并网对配网的影响。采用模态法得出全局模式下最小特征值及其相应特征向量,确定DG并网的关键节点,分析了DG并网前后电力系统各节点电压幅值及有功、无功损耗量的变化。通过IEEE33配电系统进行仿真计算,验证了该方法的可行性。同时也说明DG的加入提高了配网的电压稳定性,减少了系统功率损耗。Since the traditional power flow algorithm does not meet the requirement of distributed generation, this paper proposes, therefore, based on the characteristics of distribution network, to study the influenees of distributed generation paralleling in grid on distribution network by modal method, working out the global minimal eigenvalue and eigenvector and determining the parallel-in key node, and analyzes the change of voltage amplitude, active and reactive power wastage of nodes before and after distributed network paralleled in. Through IEEE33 distribution network, simulation calculation is made, which verifies the feasibility of the method and the ability of distributed network in voltage stability enhancement and power loss reduction.

关 键 词：分布式发电 配电网 模态分析 电压稳定 

分 类 号：TM711[电气工程—电力系统及自动化]