Adding momentum item while correcting weight and limiting range of input value reduce error and improve diagnosis correctness greatly . while normalizing the input value , a new way is put forward that normalization is performed item by item according to its sort . in this way error training can avoid going into the flat field that is caused by existing of 0 or 1 of the input value 本文首先分析了故障诊断和神经网络的基本理论，并在此基础上提出了神经网络对于变压器故障诊断系统的适用性；文中将bp神经网络算法用计算机实现；并针对其本身存在的一些缺点提出了一系列改进措施，通过在修正权值的时候增加动量项，并且限制输入值范围来减小误差、提高系统的诊断正确率；在对输入数据进行归一化处理的时候，采取按类逐项归一化的方法，避免了输入数据出现0或者1而使训练进入平坦区。
Have to hand in , do not hand in the most serious consequence to close down namely withhold inn inside as equivalent as duty goods , or undertake freezing to your bank deposit account , pay tax till you till , if be not handed in namely inside proper time , can come to goods auction so pay imposition , or be deduct tax payment directly from inside bank account , morning and evening you should be handed in , be inferior to delighted hand over item by item , also have profit to you so , if duty wu asks the problem cannot be solved , so you cannot do the processing that abandon line of business in industrial and commercial bureau , is the trouble bigger 不能不交，不交最严重的后果就是查封扣缴店内与税等值的货物，或对你们的银行存款账户进行冻结，直到你们交税为止，假如在一定期限内就是不交，那么可以将货物拍卖来缴纳税款，或是从银行账户中直接扣除税款，早晚你是要交的，不如愉快点交，这样对你们也有好处，假如税务问题解决不了的话，那么你就不能在工商局做废业处理，麻烦不是更大？
