考虑了电压的影响
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19
core.py
19
core.py
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@ -115,6 +115,7 @@ def intersection_angle(dgc, h_gav, h_cav, i_curt, u_ph): # 暴露弧的角度
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rc, rg, dgc, h_cav
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) # 暴露圆和补雷线的交点
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np_circle_intersection = np.array(circle_intersection)
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# TODO to be removed
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if not circle_intersection:
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abc = 123
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theta2_line = np_circle_intersection - np.array([dgc, h_cav])
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@ -122,10 +123,6 @@ def intersection_angle(dgc, h_gav, h_cav, i_curt, u_ph): # 暴露弧的角度
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np_circle_line_intersection = np.array(circle_line_intersection)
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theta1_line = np_circle_line_intersection - np.array([dgc, h_cav])
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theta1 = math.atan(theta1_line[1] / theta1_line[0])
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# 考虑雷电入射角度，所以theta1可以小于0，即计算从侧面击中的雷
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# if theta1 < 0:
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# # print(f"θ_1角度为负数{theta1:.4f},人为设置为0")
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# theta1 = 0
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return np.array([theta1, theta2])
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@ -134,13 +131,14 @@ def distance_point_line(point_x, point_y, line_x, line_y, k):
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return d
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def fun_calculus_pw(theta, max_w):
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def func_calculus_pw(theta, max_w):
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w_fineness = 0.01
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r_pw = 0
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# TODO to be removed
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if int(max_w / w_fineness) < 0:
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abc = 123
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pass
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w_samples, d_w = np.linspace(0, max_w, int(max_w / w_fineness) + 1, retstep=True)
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w_samples, d_w = np.linspace(0, max_w, int(max_w / w_fineness), retstep=True)
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for cal_w in w_samples[:-1]:
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r_pw += (
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(
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@ -164,7 +162,7 @@ def calculus_bd(theta, rc, rs, rg, dgc, h_cav, h_gav): # 对θ进行积分
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if d_to_rs < rs: # 相交
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# 要用过直线上一点到暴露弧的切线
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new_k = tangent_line_k(line_x, line_y, 0, h_gav, rs, init_k=k)
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# TODO to be removed
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if not new_k:
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a = 12
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tangent_line_k(line_x, line_y, 0, h_gav, rs, init_k=k)
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@ -172,9 +170,11 @@ def calculus_bd(theta, rc, rs, rg, dgc, h_cav, h_gav): # 对θ进行积分
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max_w = math.atan(new_k) # 用于保护弧相切的角度
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elif new_k < 0:
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max_w = math.atan(new_k) + math.pi
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# TODO to be removed
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if max_w < 0:
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abc = 123
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tangent_line_k(line_x, line_y, 0, h_gav, rs, init_k=k)
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# TODO to be removed
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global gCount
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gCount += 1
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if gCount % 100 == 0:
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@ -189,6 +189,7 @@ def calculus_bd(theta, rc, rs, rg, dgc, h_cav, h_gav): # 对θ进行积分
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pass
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else:
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max_w = theta + math.pi / 2 # 入射角
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# TODO to be removed
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if gCount % 200 == 0:
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# # intersection_angle(dgc, h_gav, h_cav, i_curt, u_ph)
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# gMSP.add_circle((0, h_gav), rs)
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@ -200,7 +201,7 @@ def calculus_bd(theta, rc, rs, rg, dgc, h_cav, h_gav): # 对θ进行积分
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# )
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# gCAD.save()
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pass
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r = rc / math.cos(theta) * fun_calculus_pw(theta, max_w)
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r = rc / math.cos(theta) * func_calculus_pw(theta, max_w)
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return r
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@ -212,7 +213,7 @@ def bd_area(i_curt, u_ph, dgc, h_gav, h_cav): # 暴露弧的投影面积
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rg = rg_fun(i_curt, h_cav)
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r_bd = 0
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theta_sample, d_theta = np.linspace(
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theta1, theta2, int((theta2 - theta1) / theta_fineness) + 1, retstep=True
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theta1, theta2, int((theta2 - theta1) / theta_fineness), retstep=True
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)
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for calculus_theta in theta_sample[:-1]:
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r_bd += (
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57
main.py
57
main.py
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@ -3,40 +3,49 @@ import timeit
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def egm():
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cccCount=0
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for u_bar in range(1):
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u_ph = math.sqrt(1) * 750 * math.cos(2 * math.pi / 3 * 0) / 1.732 # 运行相电压
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h_whole = 140 # 杆塔全高
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insulator_c_len = 6.8 # 串子绝缘长度
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string_c_len = 9.2
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string_g_len = 0.5
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dgc = -2.9 # 导地线水平距离
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vertical_dgc = 2.7 # 导地线挂点垂直距离
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h_g_avr_sag = 11.67 * 2 / 3
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h_c_avr_sag = (14.43 - 11.67) * 2 / 3
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h_gav = h_whole - string_g_len - h_g_avr_sag # 地线对地平均高
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h_cav = h_gav - string_c_len - vertical_dgc - h_c_avr_sag # 导线对地平均高
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shield_angle = math.atan(dgc / (vertical_dgc + string_c_len)) * 180 / math.pi
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print(f"保护角{shield_angle:.3f}°")
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# TODO to be removed
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cccCount = 0
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avr_n_sf = 0 # 考虑电压的影响
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voltage_n = 3 # 工作电压分成多少份来计算
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ng = func_ng(20)
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h_whole = 140 # 杆塔全高
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insulator_c_len = 6.8 # 串子绝缘长度
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string_c_len = 9.2
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string_g_len = 0.5
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dgc = -0.9 # 导地线水平距离
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vertical_dgc = 2.7 # 导地线挂点垂直距离
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h_g_avr_sag = 11.67 * 2 / 3
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h_c_avr_sag = (14.43 - 11.67) * 2 / 3
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h_gav = h_whole - string_g_len - h_g_avr_sag # 地线对地平均高
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h_cav = h_gav - string_c_len - vertical_dgc - h_c_avr_sag # 导线对地平均高
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shield_angle = math.atan(dgc / (vertical_dgc + string_c_len)) * 180 / math.pi
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print(f"保护角{shield_angle:.3f}°")
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for u_bar in range(voltage_n):
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u_ph = (
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math.sqrt(2) * 750 * math.cos(2 * math.pi / voltage_n * u_bar) / 1.732
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) # 运行相电压
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# 迭代法计算最大电流
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i_max = 0
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i_min = min_i(insulator_c_len, u_ph / 1.732)
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_min_i = i_min # 尝试的最小电流
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_max_i = 200 # 尝试的最大电流
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#TODO remove it
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# TODO remove it
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cad = Draw()
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cad.draw(i_min, u_ph, h_gav, h_cav, dgc, 2)
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for i_bar in np.linspace(_min_i, _max_i, int((_max_i - _min_i) / 0.1)): # 雷电流
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print(f"尝试计算电流为{i_bar:.2f}")
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# print(f"尝试计算电流为{i_bar:.2f}")
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rs = rs_fun(i_bar)
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rc = rc_fun(i_bar, u_ph)
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rg = rg_fun(i_bar, h_cav)
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#######
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cccCount+=1
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if cccCount%30==0:
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cccCount += 1
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if cccCount % 30 == 0:
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import core
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core.gMSP.add_circle((0, h_gav), rs)
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core.gMSP.add_circle((dgc, h_cav), rc_fun(i_bar, -u_ph),dxfattribs={"color": 4})
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core.gMSP.add_circle(
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(dgc, h_cav), rc_fun(i_bar, -u_ph), dxfattribs={"color": 4}
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)
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core.gMSP.add_circle((dgc, h_cav), rc)
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#######
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circle_intersection = solve_circle_intersection(rs, rc, h_gav, h_cav, dgc)
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@ -108,8 +117,12 @@ def egm():
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/ 2
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* d_curt
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)
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n_sf = 2 * 2.7 / 10 * calculus # 跳闸率
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print(f"跳闸率是{n_sf:.6}")
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n_sf = (
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2 * ng / 10 * calculus
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) # 跳闸率 利用Q╱GDW 11452-2015 架空输电线路防雷导则的公式 Ng=0.023*Td^(1.3) 20天雷暴日地闪密度为1.13
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avr_n_sf += n_sf / voltage_n
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print(f"工作电压为{u_ph:.2f}kV时,跳闸率是{n_sf:.6}")
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print(f"跳闸率是{avr_n_sf:.6}")
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def speed():
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