并联制动电阻对恒速恒频风机低电压穿越能力的提升  

Parallel Brake Resistance to Constant Speed and Frequency Wind Power Generator Low Voltage Traversing Capability Promotion

作　　者：刘德才[1] 吕春晖[1] 

机构地区：[1]山东电力集团公司聊城供电公司,山东聊城252000

出　　处：《通信电源技术》2013年第6期32-36,共5页Telecom Power Technology

摘　　要：制动电阻已经被成熟地用于电力系统中以保持频率的稳定性。文中分析了并联制动电阻在故障期间的作用,指出在一定条件下,并联制动电阻可在故障期间减小风场吸收的无功,从而提升风力发电系统的端口电压以达到提升风场低电压穿越能力的效果;然而在某些情况下,并联制动电阻反而可能会降低系统的端口电压;讨论了并联制动电阻的阻值对系统低电压穿越能力的影响,并在SABER下对使用并联制动电阻的系统进行了仿真,仿真结果和分析相吻合。The brake resistance has already been maturely used in the electrical power system to maintain the frequency stabili- ty. This article analyzed the function of the parallel brake resistance during the fault, pointed out that under certain conditions, the parallel brake resistance can be reduced to absorbed the wind farm reactive power during the fault, enhancing port voltage of the wind power generation system in order to achieve the effect of improving low voltage traversing capability of wind farm. However in certain situations, the parallel brake resistance may decrease the voltage of the port. This paper discussed the a^fect of the parel leI brake resistance to the low voltage traversing capability of the system, and carried on the simulation using parallel brake resist- ance system under SABER, the simulation results coincide with the analysis.

关 键 词：低电压穿越 恒速恒频 风力发电系统 无功补偿 并联制动电阻 

分 类 号：TM614[电气工程—电力系统及自动化]