摘要
针对现有电能质量扰动源定位方法中对扰动方向表征不足的问题,引入扰动测度概念,测量扰动的大小和方向,提出一种扰动方向的定量表示方法以及相应的扰动源定位算法。首先利用基本信度分配函数对扰动方向进行量化处理,然后通过隶属度函数对扰动功率和扰动能量进行综合定位,得出多测点的扰动方向测度列向量,结合覆盖矩阵得出最终的定位结果.仿真结果表明:在原方法定位不准确的情况下,新方法仍然能够正确定位扰动源,证实了此方法的有效性和可行性.
To improve the accuracy of Traditional method for power quality disturbance source location cannot describe disturbance direction.In order to improve it,this paper quote the concept of disturbance measure,which measures the direction and quantity of disturbance.Firstly,the disturbance direction is quantified using the basic credit assignment function.Then disturbance power and disturbance energy are integrated with membership functions to obtain the column vector of disturbance direction measure,receiving the final results combined with the coverage matrix.The method simulate and test results show that the method can improve the availability and accuracy of disturbance source location.
出处
《电力科学与技术学报》
CAS
2010年第1期49-53,共5页
Journal of Electric Power Science And Technology
基金
国家自然科学基金(50877069)
关键词
电能质量
扰动源定位
信度分配函数
扰动测度
power quality
disturbance source location
credit assignment function
disturbance measure
