接触网外文资料 英汉翻译

1、Development of Feeder Messenger Wire Type Overhead Contact Line with One Copper Messenger Wire Takahiro HAMADA Atsushi IWAINAKA Researcher, Former Researcher, Contact Line Structures, Power Supply Technology Div. Feeder messenger wire type overhead contact lines have drawn attention recently from th

2、e viewpoint of labor-saving for maintenance. A type that uses two PH356mm2 messenger wires was introduced into the Tokyo district, while another that uses an SBTACSR730mm2 messenger wire into the Kansai district. In terms of the number of messenger wires, the one-wire type is more useful, as it invo

3、lves a smaller number of parts. As the material for the wire, copper is better than aluminum, since it does not require connection with different metals. To realize the advantages of the two systems, therefore, we developed a feeder messenger wire type overhead contact line that has only one copper

4、messenger wire. Keywords: feeder messenger wire type overhead contact line, PH730mm2 messenger wire, current collecting characteristics 1. Introduction Feeder messenger wire type overhead contact lines have a structure to combine the function of feeder with the messenger wire. They have drawn attent

5、ion recently in Japan from the viewpoint of labor-saving for maintenance. They use two hard-drawn copper stranded conductor PH356mm2 messenger wires in the Tokyo district and an aluminum conductor steel-reinforced SBTACSR730mm2 messenger wire in the Kansai district. In terms of the number of messeng

6、er wires, the one-wire type is more useful as it involves a smaller number of parts, and copper is better as the material for the wire than aluminum since it does not require connection with different metals. Therefore, we promoted this research for the purpose of developing a feeder messenger wire

7、type overhead contact line that has only one copper messenger wire to realize the advantages of the two systems. In order to determine what wires suit the new overhead contact line, we chose a narrow-gauge line in Tokyo as a test site, studied whether electrical and mechanical characteristics of wir

8、es satisfy the standard values, and examined the current collecting characteristics of various types of wires through simulation. As a result, it was proved that the PH730mm2 messenger wire was the most appropriate in the overcrowded railway sections in Tokyo. Based on this result, we actually const

9、ructed a PH730mm2 messenger wire and investigated its current collecting characteristics by using current collection testing equipment to find that standard values were all satisfied at the speed of 160 km/h. It was also proved that this wire type could be used for operation at speeds up to 160 km/h

10、. 2. Examination of the optimum wires Table 1 lists the wires examined as candidates of one onemessenger wire. We examined the current capacity, wire resistance, tensile strength, minimum hanger length and current collecting characteristics, to determine the applicability Table 1 Dimensions of wire

11、2.1 Current capacity We examined whether the wire temperature is below the allowable limit at the conditions in Table 2. The allowable temperature is 90 for the hard drawn copperstranded conductor (PH) and 150 for the thermalproofhard drawn copper stranded conductor (THDC).Figure 1 shows the wire te

12、mperature rises when a currentof 855 A, which is the maximum value for wiresused in Tokyo, flows for 3,600 seconds. The shaded portionrepresents the surrounding temperature of 35 , Table 2 Conditions of temperature calculation Fig. 1 Wire temperature rises and the portion of slash mark the temperatu

13、re rises by the Joule heat. There are no wires of THDC or PH that show a temperature rise over the allowable limit under this condition. 2.2 Wire resistance To evaluate the wire resistance, we compared several kinds of messengers with two PH356mm2 messenger wires currently used on the narrow-gauge l

14、ines in Tokyo. In Fig. 2, the slash lined bars show the resistance after the temperature rise at an 855 A current flow and the shaded bars show the wire resistance at 20 . A comparison of the bar), wires of with PH356mm2 of resistance two wires that test at 20 (shaded proves that the resistance of T

15、HDC670mm2 wire and PH670mm2 wire is higher than that of two PH356mm2 wires. Moreover, in the case of the resistance after temperature rise (slash), only the resistance of THDC670mm2 wire and PH670mm2 wire is higher than that of two PH356mm2 wires. Fig. 2 Wire resistance 2.3 Tensile strength Since it

16、 is assumed that this catenary system is constructed to a standard tension of 39.2 kN, it is a condition that the tensile strength is set at over 86.24 kN, as the safety factor of copper is 2.2 in Japan. All the tensile strengths for the test wires referred to in this paper are over 86.24 kN. 2.4 Mi

17、nimum hanger length We calculated the minimum hanger length on the assumption that the messenger wire tension is 39.2 kN; contact wire tension is 14.7 kN; and span length is 50 m. When we assume a standard system height (850 mm) equivalent to that of existing feeder messenger wire type overhead cont

18、act line in Tokyo, only the minimum hanger length of PH840mm2 wire is less than 150 mm. If the system height is assumed to be 960 mm, the minimum hanger length of PH840mm2 wire is larger than 150 mm. 2.5 Current collecting characteristics We calculated the contact loss rate and contact wire uplift a

19、nd strain at support by simulation when we use each tested wire as a messenger, and compared the results with the standard values that can realize stable current collection. Tables 3 and 4 show simulation conditions and standard values, respectively. Figure 3 shows the contact loss rate of the 2nd p

20、antograph. As a result of the simulation, the contact loss rate of the 1st pantograph was set at 0 % for all wires and contact loss rates of the 2nd and 3rd pantographs became several percent at speeds higher than 180 km/h. However, the contact loss rate up to 160 km/h, which is practically the high

21、est speed on narrow-gauge lines, is 0 %. Figures 4 and 5 show the contact wire uplift and strain at support, re- Table 3 Conditions of simulation Table 4 Standard values of current collecting characteristics Fig. 3 Simulation results (Contact loss rate) Fig.4 Simulation results (Contact wire strain

22、at support) Fig. 5 Simulation results (Contact wire uplift at support) spectively. Either is not over the standard value up to the speed of 200 km/h with any wire. 2.6 Examination results Since the current capacity, tensile strength and current collecting characteristics satisfied the standard value

23、s no matter which wire we use, we judged the appropriateness of the wires based on the wire resistance. Table 5 shows the judgment results. Under the condition of an 855 A current flow, we marked O if the wire resistance satisfies the judgment standard and X if not. Consequently, we reached a conclu

24、sion that use of PH730mm2 wire is appropriate with respect to the 855 A current capacity. Table 5 Judgment results 3. Test by current collection testing equipment The current collection testing equipment of the Railway Technical Research Institute used for this test has a full length of 500 m and ca

25、n carry out running tests up to the speed of 160 km/h, by using an actual contact wire and pantograph. We chose a PH730mm2 wire among the wires which were appropriate for the test in Chapter 2, constructed it as a messenger for the testing equipment, and examined its current collecting characteristi

26、cs. Test conditions are as follows. 3.1 Test conditions 3.1.1 Basic composition of catenary and used pantograph The catenary of the testing equipment was composed to the specification shown in Table 6, which is used for narrow-gauge lines in Tokyo. This system has two PH356mm2 messenger wires and a

27、GTM-SN170mm2 contact wire. Table 6 Test conditions 3.1.2 Pantograph damper We used a PS26 pantograph with a damper currently used for the limited express trains on narrow-gauge lines, and also examined the case where the damper is removed to assume common vehicles. Figure 6 shows the catenary compos

28、ition and the measuring points of testing equipment. Fig. 6 Catenary composition and measuring points of current collection testing equipment 3.2 Test results The test results are shown in Figs. 7 to 9 when messenger tension is set at the standard value (39.2 kN). In these Figures, the results in th

29、e cases with and without pantograph dampers are compared. 3.2.1 Contact loss rate Figure 7 shows the relation between speed and contact loss rate. In the case where there is a pantograph damper, it is 0.26 % at the speed of about 156 km/h. However, it is substantially less than the standard value of

30、 5 %. In the case where there are no dampers, the contact loss is not generated up to about 150 km/h. 3.2.2 Contact wire strain Figure 8 shows the relation between speed and con-tact wire strain at support. The allowable stress for oscillating fatigue of copper contact wire is set at 60 MPa based on

31、 the results of an experiment, or 50010-6 when converted into strain. Since the strain in this experiment is considered as the difference between the maximum and minimum values, the standard value of contact wire strain is set at 1000 10-6 at the full amplitude. As it takes a maximum value at about

32、150 km/h, the value is 175 10-6 at the maximum, which is considerably less than the standard value of contact wire strain. Fig. 7 Test results (Contact loss rate) Fig. 8 Test results (Contact wire strain at support) Fig. 9 Test results (Contact wire uplift at support) 3.2.3 Contact wire uplift Figur

33、e 9 shows the relation between speed and contact wire uplift at support. As it takes a maximum value of 10.8 mm at about 120 km/h, it is considerably to be less than the standard value of contact wire uplift at support. Figures 7 to 9 show the difference in the characteristics when a pantograph damp

34、er is used or not, we understand that the contact wire strain in the case where no dampers are used is a little smaller. Regarding other items, the current collecting characteristics are virtually not different from each other irrespective of whether a damper is used or not. 3.3 Conclusion of the te

35、st When a PH730mm2 wire is selected and constructed to the standard tension of 39.2 kN as a messenger, the contact loss rate, contact wire strain and contact wire uplift at support satisfy the standard values. We understood that this system can be used up to 160 km/h. Moreover, when the pantograph d

36、amper is removed, it turns out that the current collecting characteristics do not change much or there are no problems in running. However, in the actual case where two or more pantographs are used, and the state of catenary is considered to be worse than on this testing equipment, the field running

37、 tests need to be performed for final judgment. 4. Conclusion We performed this research to investigate high-quality feeder messenger wire type overhead contact lines and examined a wire of copper system. We selected a PH730mm2 wire and used it as a messenger wire, and examined the current collectin

38、g characteristics at the speed up to 160 km/h by using current collection testing equipment. Although this system has a heavy large-diameter wire and may require difficult construction work, no important problems were experienced in the construction of the test equipment. It is required, however, to

39、 investigate the problems that will arise in the construction work on actual railway lines in service. References 1) Shimodaira, Y.: Study on messenger wire of wire type overhead contact line, National convention of I.E.E. JAPAN (in Japanese), 5-212, 1999. 2）Iwainaka, A., Suzuki, A.: Current collect

40、ing characteristics of one line copper feeder messenger wire type over head contact line, J-RAIL99 (in Japanese), pp.265, 1999. From:QR Of RTRI ,Vol.44,No.2,May.2003 译文 接触网承力索馈线与支线接触网的发展 滨田孝弘 研究员 岩井淳纳卡 前研究员 电源技术科接触网结构部 支线接触网导线以其节省劳力与维修费用的优点引起了人们的关注。A 型承 2的电缆而被引入到东京当地的， mm 而另一种力索使用的是两根截面积PH3562 型承力索。

41、从承力索的数量上来看，mm 是使用到关西地区的 SB-TACSR730 单线型更有用，因为它涉及的部件数量较少。作为线材，铜比铝好，因为它不需要连接与不同金属相连接。为了实现这两个系统的优势，因此，我们制定了支线支接触网导线类型，只有一根铜承力索。 2 承力索，目前收集的特点 关键词：支线支接触网导线类型，PH730 mm1 简介 支线接触网导线由一个结构部件将接触馈线和信号线连接起来，它们以其在运用维护中节省劳动力的特点而在日本被引起关注。这种使用在东京地区的 2 接触导线运用两个铜制的硬盘将截面积的导线固定，而在关西地区 mmPH3562 型铝制接触线。从承力索的数 TACSR730mm

42、则用的是金属强度较强的 SB-量上来看，单线型承力索更加适用，原因是它所要求的结构部件很少，铜导线比铝导线的优势还在于它不需要考虑与不同金属的连接问题。因此，我们提倡发展支线支接触网导线类型，以只用单铜承力索的森格线为例，实现对两个系统各自优点研究的目的。 为了确定什么导线能适应新的过头接触线，我们选择了东京的一段窄轨铁路作为一个试验场，研究电线的电气和机械特性是否符合标准值，并通过仿真研究2 支线适合用在东京最拥挤 mm 目前收集的各类特色的电线。结果证明了PH730 的铁路上。 2 承力索 mm 在此基础上，我们实际上还构建了利用现有检测设备对 PH730 的特点进行检测，目前的发现，收集

43、的标准值均在 160km/h 的速度上，对此我们表示满意同时它也证明了这种电线类型可用于操作速度。 2 考核最佳线路 表 1 列出了作为我们研究对象的承力索导线。我们研究了导线的载流能力，线路阻抗，线材的拉伸强度，最小长度和电流收集特点，确定这些电线适用于一个支线系统的温度。 2.1 载流能力 表 2 所示条件是我们研究允许线材温度低于限制条件的情况。PH 型硬铜绞显示1。图 150）的允许温度为 THDC，热防硬拉绞线（90 线的允许温度是了导线温度升高时，电流 3600 秒内流动了 885A，这是在东京用电线路上电流流动的最大值。其中的阴影部分代表环境温度为 35时的焦耳热量，而斜线部分则

44、表示上升了的焦耳热量。在许多 THDC 或 PH 型导线中没有一个显示在此条件下的允许温度是高于这个温度的。 表导线尺寸表 导线名导线类导线总股钢绞线直径（2.6127PH670m3.291PH730m 冷拔铜绞4.061PH770mm2.9 127 2 PH840mm2.6 127 2 THDC670mm 热防硬型 3.2 91 2 THDC730mm 铜绞线 4.0 61 2 THDC770mm 2.9 127 2 THDC840mm 表温度计算条件 2 环境温度（早上繁忙时期） 35 日照 2 W/cm0.1 发射率 0.9 风速 0.5 m/s 每小时（东京单线最大电流）负载电流 88

45、5A2.2 线路阻抗 为了评估线路电阻，我们将几种支线线与目前在东京窄轨线路上使用的两种PH356 mm2 支线做了比较。在图 2 中，斜线后内衬条显示的是当温度升高以后在线路上流过一个 855A 电流的情况，彩色条则表示在温度为 20时的线路阻抗。在 20时将两根 THDC670mm2 和 PH670mm2 的一对 PH356mm2 电线作比较证明了在此温度下这两种导线的电阻都比 PH356mm2 的电阻要高。此外，在温度上升（斜线部分所示）阻力的情况下，只有 THDC670mm2 导线和PH670mm2 的电阻要高。PH356mm2 导线的电阻比双线 图 1 导线温度升高图 图 2 导线电

46、阻 2.3 拉伸强度 为了虚拟出所研究的接触网系统而构建了一个标准的 39.2 千牛的力，在日本这是一个拉伸强度将超过 86.24 千牛的设置，因为铜的安全系数是 2.2。在本篇论文中所提到的所有导线的拉力强度测试中所提及的力都是超过 86.24 千牛这一设置值的。 2.4 最小结构长度 我们验证了假设条件，即承力索张力为 39.2 千牛时的最低悬挂长度；以及接触线张力为 14.7 千牛，跨度为 50 米时的悬挂高度。当我们假设一个标准的系统高度（850 毫米） ，相当于东京现有接驳线式架空使者联络线的情况，证明了 2型承力索的最小结构长度是小于 150mm 毫米的。如果将系统高度 PH840

47、 只有2 型承力索的最小结构长度将大于小 150 毫米。 mm 毫米，则假定为960PH8402.5 电流损耗 当我们我们对接触网上的接触线损率和隆起时的支持和应变进行模拟计算，把每个测试线作为一个支，并与标准值进行比较，最终就可以实现电流的集合。表 3 和表 4 分别为显示的模拟条件和标准值。图 3 显示了第二弓的接触损失率。作为模拟结果，我们将第 1 受电弓的接触损失率定为 0，则当列车速度高于 180公里/小时，所有接触导线和接第二和第三受电弓的损失率就只占了这里面的几个百分点。然而，当车速为 160 公里/小时接触损失率将升高，这实际上是对窄轨线的最高速度，对应的接触损失率是 0。图

48、4 和图 5 分别显示了接触线隆起和应变的支持。无论是不是在标准值情况下，也不论速度能不能达到 200 公里/小时，也不论是何种导线。 图仿真结果（接触损耗率） 3 2.6 比较结果 当导线的载流能力，拉伸强度和电流损耗满足标准值时，不论我们用的是哪一种接触导线，我们判断的基础是导线的电阻是否恰当。表 5 显示了选择结果。在一个 855 A 的电流流过的条件下，我们以标有“O”标记导线证明其电阻是满足条件的，如果没有，则以标有“X”标记的显示其电阻不满足条件。如果导线电阻满足判断标准和“X” 。因此，我们得出结论认为 PH730mm2 型接触导线相对于 855A 的电流容量来使用是恰当的。 3

49、 电流损耗检测系统 铁路技术研究院用于测试电流损耗的这套设备全长有 500 米，该设备通过一个实际接触线和受电弓可以进行时速 160 公里运行的测试。我们选择作检测的PH730mm2 型接触线是第二章中所述的各种接触支线中的一种。我们讨论了其电流损耗的特点，试验条件如下所述。 3.1 测试条件 3.1.1 接触网的基本组成和受电弓的使用 这也是在东京窄轨线路上所使用的规所示的是接触网检测设备的组成，6 表格。该系统由两条 PH356mm2 支线和一条 GTM-SN170mm2 接触线组成。 表模拟条件 3接触 GTM-SN170m 支线张 39.2KN接触线张 14.7KN接触网的组跨 50m构件之间的距 5m结构高 850m型 PS26数受电 3 ，距离 60m 80m速度 200km/h 100 表标准电流损耗特点 4 接触损失率少于 5% 接触线能承受的应变 -6 10 小于 500 小于接触线支撑隆起 70mm 表评价结果 5 接触线类型