摘要
非同步机电源在电网中具有重要性,但在实际应用过程中存在不稳定问题。所以需要提出导纳矩阵的谐振分析方法,对非同步机电源的谐振问题进行抑制和分析。本文分析和研究关于非同步机电源的阻抗建模方法,包括测试信号法和小干扰线性化法,深入分析锁相环与内环控制器的影响,提出网络谐振结构分析方法及其特征指标,以此确保敏感元件参数与影响区域。以具体风电场为例,分析系统谐振机构,提出相应的改善措施。通过试验分析结果能够看出,非同步机电源之所以出现谐振问题,主要是因为负电阻效应影响,所以必须针对该问题,提出相应的整改措施。
Asynchronous machine power supply is of importance in power grid, but shows unstable problem in practical application. It is necessary to put forward resonance analysis method of admittance matrix, to suppress and analyze resonance problem of asynchronous machine power supply. The paper analyzes and studies impedance modeling methods of asynchronous machine power supply, including test signal method and small interference linearization method, analyzes influence of PLL and inner loop controller deeply, puts forward network resonance structure analysis method and its characteristic indexes, to ensure parameters and influence areas of sensitive elements. With example of specific wind farm, it analyzes system resonance mechanism and puts forward corresponding improvement measures. Test analysis results show, main reason of resonance problem of asynchronous machine power supply is negative resistance effect, so it is necessary to put forward corresponding rectification measures for the problem.
作者
王雪方
郑金松
WANG Xue-fang;ZHENG Jin-song(Hebi Polytechnic,Hebi,Henan 458030)
出处
《新型工业化》
2020年第1期25-29,共5页
The Journal of New Industrialization
关键词
非同步机电源
接入电网
谐振
分析抑制
Asynchronous machine power supply
Connected to power grid
Resonance
Analysis and suppression
作者简介
王雪方(1987–),女,硕士研究生,助教,研究方向:凝聚态物理;郑金松(1987–),男,硕士研究生,讲师,研究方向:机械制造及其自动化。
