摘要
针对一次调频人工频率死区设置不当可能影响机组正常运行的情况,依据普通型与增强型人工频率死区的数学模型,分析了采用不同类型人工频率死区时机组的一次调频特性,并利用PSD-BPA暂态稳定程序提供的水轮机调节系统模型进行了仿真。结果表明,增强型人工频率死区不会消减机组一次调频的调节深度,能够提升机组一次调频的响应速动性,但是当一次调频的增强型人工频率死区设值较大,且遇到系统频率在人工频率死区边界频繁波动时,机组负荷会受迫出现明显波动。
In allusion to the case that improper configuration of artificial frequency dead zone of the primary frequency mod- ulation （FM） may influence normal operation of the unit, this paper analyzes characteristics of the primary FM of unit when adopting different types of artificial frequency dead zones respectively according to ordinary mathematical model and en- hanced mathematical model. It also uses regulating system model of the water turbine provided by PSD-BPA transient stabili- ty program for simulation. The results indicate that the enhanced artificial frequency dead zone will not weaken regulating depth of the primary FM and is able to promote response quick-action of FM, but if the setting value of enhanced artificial frequency dead zone is larger and when system frequency frequently fluctuates at the edge of artificial frequency dead zone, load of the unit will fluctuate obviously.
出处
《广东电力》
2016年第8期56-59,128,共5页
Guangdong Electric Power
关键词
增强型
人工频率死区
一次调频
响应
enhanced
artificial frequency dead zone
primary frequency modulation
response
