天津电网大容量冲击负荷对邻近发电机组影响的仿真研究  

Simulation study of effects of high-capacity impact loads on nearby turbine-generators in Tianjin power system

作　　者：刘丽霞[1] 岑海凤[2] 李晓辉[1] 李国栋[1] 王西田[2] 罗敏[2] 艾芊[2] 

机构地区：[1]天津市电力公司技术中心,天津300022 [2]上海交通大学电气工程系,上海200240

出　　处：《电力系统保护与控制》2009年第20期43-46,52,共5页Power System Protection and Control

基　　金：国家自然科学基金资助项目(50807036)

摘　　要：随着大容量冲击负荷的不断增加及分布越发广泛,冲击负荷对邻近电厂正常运行所造成的不利影响成为钢铁企业和电力行业共同关注的问题。以天津电网作为研究对象,采用基于实测数据的冲击负荷模型,在EMTP中仿真分析冲击负荷在不同投入方式下对邻近发电机组的影响。同时,通过对系统开机方式、系统短路容量及负荷接入点电气距离三个影响因素的计算分析,探讨了冲击负荷对机组的影响与电网结构的关系,从而给电网结构规划和机组安全运行提供了指导。With the large amount and wide distribution of impact loads, adverse effects of impact loads on nearby plants have been issues of common concern. By applying a kind of model for impact loads based on actually measured data, effects of impact loads on nearby turbine-generators in Tianjin power system are firstly simulated in the ElectroMagnetic Transients Program（EMTP）. Then, from the aspects of operation conditions of generators, short-circuit capacity（SCC） of PCC and electrical distance of location of impact loads, relationships between effects of impact loads on nearby turbine-generators and the structure of the power system are discussed, thus providing a guide for planning of power system and safe operation of turbine-generators.

关 键 词：天津电网 冲击负荷 发电机组 影响 EMTP 

分 类 号：TM743[电气工程—电力系统及自动化]