UPFC三节点功率注入模型及其工程应用  

A three-bus power injection model of UPFC and its engineering application

作　　者：王海潜 祁万春 乔黎伟 吴晨 陈曦[2] 吴熙[2] 

机构地区：[1]江苏省电力公司电力经济技术研究院,江苏南京210096 [2]东南大学电气工程学院,江苏南京210096

出　　处：《电力系统保护与控制》2016年第18期145-151,共7页Power System Protection and Control

基　　金：国家自然科学基金(51407028);江苏省自然科学基金(BK20140633)~~

摘　　要：实际工程中会出现UPFC并联侧换流变压器接入低电压等级母线的结构。对该结构的UPFC进行仿真分析时,采用现有模型无法体现出UPFC对低压母线及与之相连的变电站、线路的影响。为解决上述问题,提出了一种UPFC三节点功率注入模型,并采用注入功率法,推导了UPFC三节点功率注入模型的数学表达式。利用电力系统综合程序(PSASP)的用户自定义模型(UD)功能,搭建了UPFC三节点功率注入模型。该模型将UPFC并联侧功率注入到低压母线上,克服了现有模型无法体现UPFC对低压母线及与其相连变电站及线路影响的缺点。将其应用于采用该种UPFC接法的南京UPFC工程中进行仿真计算,结果验证了该UPFC模型的精确性和可信度。In particular practical engineering application, the parallel side transformers of UPFC are integrated to the low voltage buses. Due to the special structure of UPFC, it is difficult to analyze the impact of UPFC on low voltage buses, neighboring substations and transmission lines with existing model. A three-bus power injection model of UPFC is proposed in this paper in order to solve this problem. Based on power injection method, the mathematical expression of a three-bus power injection model of UPFC is derived. A three-bus power injection simulation model is established by using the User Defined（UD） function of Power System Analysis Software Package（PSASP）. In this model, the UPFC parallel power injects into the low voltage buses, which overcomes the limitation of existing model since they cannot reflect the impacts of UPFC on low voltage buses, connected substations and transmission lines. This three-bus power injection model has been put into practice successfully in the simulation of the Nanjing UPFC project. Simulation results reveal the accuracy and reliability of this UPFC model.

关 键 词：功率注入法 三节点模型 南京UPFC工程 统一潮流控制器 PSASP/UD 

分 类 号：TM721.2[电气工程—电力系统及自动化]