import Self_defined_functions
import math
#------------------------------------------------------------------------------------------------------------------------------------
def ATTransformer_DiffProtection(K_k, n_ylmax, I_eT, n_CT):
    # 该函数适用于以下定值的计算：
    # AT变压器差动差动速断电流与比率制动电流
    # 检测一下数据输入类型
    for name, value in locals().items():
        Self_defined_functions.check_input(value)
    I_sd = K_k * (2 * n_ylmax * I_eT) / n_CT
    I_dz = 0.5 * I_eT / n_CT
    I_zd1 = I_eT / n_CT
    I_zd2 = 3 * I_eT / n_CT
    return I_sd, I_dz, I_zd1, I_zd2

def ATTransformer_OvrCrrntProtection(I_eT, n_CT):
    for name, value in locals().items():
        Self_defined_functions.check_input(value)
    I_ovrCrrnt = 2.5 * I_eT / n_CT
    return I_ovrCrrnt