摘要
励磁调节器是维持发电机机端电压恒定进而保证电力系统稳定的关键设备。然而,各厂家励磁调节器辅助限制环节特性存在明显差异,影响机组安全和电网稳定,但却长期以来未得到足够重视。根据励磁调节器设备性能检测情况并结合发电机运行时功率图,分析上述差异,即数字式自动励磁调节器各辅助限制环节的控制外特性,并确定其可能给发电机设备安全和电网稳定带来的影响。依据试验得到的统计数据,对励磁调节器各辅助限制环节技术指标检测分析提出建议,以期为相关部门加强励磁系统管理提供技术参考。
The automatic voltage regulator(AVR) plays an important role in maintaining generator terminal voltages and ensuring the power system stability.However,the auxiliary limiting characteristics of digital AVRs made by various manufactures are quite different,which has affected the safety of generator apparatus and stability of power grids,but enough attention has not been paid to for a long time.Based on the performance testing of AVRs and generator running power diagram,the differences in auxiliary limiting characteristics of various AVRs were analyzed and their possible impact on the safety of generator apparatus and stability of power grids were determined.Some proposals were put forward for testing analysis of the auxiliary limiting technical indicators of AVRs according to statistical data from experimental tests.The results can be used as a reference for strengthening management of the excitation system.
出处
《中国电力》
CSCD
北大核心
2012年第12期52-56,70,共6页
Electric Power
关键词
自动励磁调节器
辅助限制环节
实时数字仿真系统
电力系统稳定
automatic voltage regulator(AVR)
auxiliary limiter
real time numerical simulation
power system stability
