But its limited ability in FFT operation, communication, extensibility that degree of accuracy was low and unbalanced error was high when power harmonic wave appeared or three-phase circuits were unbalanced. 当电网出现谐波或三相电路不平衡时,无功功率存在不平衡误差,其精度下降。
When a training sample set is labelled and unbalanced so that the class with small size will reach a much high error rate of classification, a weighted SVM algorithm, i. e., dual v-SVM, is introduced into anomaly detection. 针对有标定的不均衡数据集对于数目较少的那类样本分类错误率较高的情况,引入了加权SVM算法-双v-SVM算法来进行异常检测;
The problems shall be solved as the sulfuric acid is not added into the granulator pipe reactor for lack of sulfuric acid pump with high head and small flow, the unbalanced scrubbing liquid as well as the big error of liquid ammonia flow meter. 因无合适的大扬程小流量硫酸泵,造粒机管式反应器中尚未实现加硫酸,以及洗涤液不平衡、液氨流量计计量误差大等是有待解决的问题。
To ensure reliable no-action of differential protection on external short-circuit fault, the increasing of unbalanced current should be taken into account in maximal unbalanced current calculation, which is caused by only restraining the ratio error of current transformer. 为保证差动保护区外短路故障时可靠不动作,在计算最大不平衡电流时应考虑仅限制电流互感器变比误差导致不平衡电流增大因素。
The influence of compensating resistance and inter-nal resistance in conductor on unbalanced voltage are analysed. A calculating formula for unbalanced voltage is given and another pair of conductor with smaller error is introduced. 本文分析了刀片尾部实际温度,补偿电阻及导线内阻对不平衡电压的影响,得出不平衡电压的计算公式,并提出了另一对误差较小的导线,可供选用。
The analysis of the Unbalanced Error for Measurement by Bridge of Cylindrical Weight Sensor 简式称重传感器电桥测量中的非平衡误差分析
In unbalanced three-phase system, when using d-q calculating mode based harmonic current detecting method, there is a systematic error between the detected result and actual current arising by the phase difference of phase locking result and positive voltage component. 在三相不对称情况下用d-q运算方式谐波检测方法检测电网谐波时,锁相环的锁相结果与电压正序分量之间的相差使检测结果存在系统误差。