摘要
针对目前相位跳变检测仍缺乏明确的国际标准,提出检测三相系统电压暂降PAJ的4种不同定义和计算方法;方法 1和2基于三相测量电压检测三相PAJ,方法 3和4基于复电压参数检测特征PAJ。详细研究修正频率和暂态过程对4种检测算法的影响,以暂降严重程度和PAJ偏移程度为依据,提出具有一般意义的三相系统PAJ检测标准。以100组系统实测数据对4种方法进行仿真验证,结果表明所提方法正确有效,PAJ检测标准可行实用。
The phase angle jump( PAJ) is one of the characteristics of voltage sag. However, there is still no international standard of PAJ detection. Four different definitions and calculations to detect PAJ of voltage sag in three-phase system are proposed. Each of three PAJ can be obtained by the method 1 and method 2, characteristic PAJ can get from the characteristic voltage by method 3 and method 4. Detailed studies of the influence of correcting frequency and transition segments are made on the four kinds of detection algorithms. Considering the distinction on sag severity and PAJ deviation degree, PAJ detection standards of general significance in three-phase system are recommended. Simulations of 100 sets of system measured data verify the correctness of proposed methods and the practicability of PAJ detection standards.
出处
《中国测试》
北大核心
2015年第6期101-106,共6页
China Measurement & Test
关键词
电压暂降
相位跳变
检测方法
特征电压
voltage sag
phase angle jump
detection algorithm
characteristic voltage
