基于可靠性真值表的JTC补偿电容重要性评估

武晓春; 洪玲

doi:10.13700/j.bh.1001-5965.2021.0767

基于可靠性真值表的JTC补偿电容重要性评估

doi: 10.13700/j.bh.1001-5965.2021.0767

武晓春^,,
洪玲

兰州交通大学自动化与电气工程学院，兰州 730070

基金项目: 国家自然科学基金(61661027)

详细信息

通讯作者:
E-mail：369038806@qq.com

中图分类号: U284.2
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- 被引次数: 0
出版历程
- 收稿日期: 2021-12-20
- 录用日期: 2022-03-23
- 网络出版日期: 2022-04-28
- 整期出版日期: 2023-10-31

Importance evaluation of JTC compensation capacitor based on reliability truth table

WU Xiaochun^,,
HONG Ling

School of Automation and Electrical Engineering，Lanzhou Jiaotong University，Lanzhou 730070，China

Funds: National Natural Science Foundation of China (61661027)

More Information

Corresponding author: E-mail：369038806@qq.com

摘要

摘要:
为实现不同位置补偿电容的重要性评估，得到对无绝缘轨道电路(JTC)影响较大的补偿电容位置，提出一种基于可靠性真值表的JTC补偿电容重要性评估方法。建立JTC调整态和分路态模型，并仿真得到补偿电容断线时全部故障类型的调整态接收电压和分路态分路电流幅值曲线；提取相应的接收电压和最小分路电流与其阈值进行对比分析，建立JTC可靠性真值表；基于可靠性真值表计算各补偿电容的重要度系数，并通过柱形图确定对JTC影响较大的补偿电容位置。结果表明：靠近接收端的第2个和第3个补偿电容对JTC的影响较大。所提方法可协助现场维修人员确定各补偿电容的维护优先级，为补偿电容的重点监测提供依据。
- 无绝缘轨道电路 /
- 补偿电容 /
- 断线故障 /
- 可靠性真值表 /
- 重要性评估
Abstract:
A method based on a reliability truth table for evaluating the importance of jointless track circuit (JTC) compensation capacitor is developed in order to assess the significance of compensation capacitors at various points of JTC. Firstly, an adjustment state model and a shunt state of the JTC are established, then the received voltage and shunt current amplitude curves of all fault types when compensation capacitors are disconnected in the adjustment state and shunt state are obtained by simulation. Secondly, the corresponding received voltage and minimum shunt current are extracted and compared with their thresholds, so as to establish the JTC reliability truth table. Finally, the reliability truth table is used to calculate the importance coefficient of each compensation capacitor, and the column diagram is used to find the location of the compensation capacitors that have the greatest influence on JTC. The results show that the second and third compensation capacitors near the receiver have a great influence on JTC. This method can assist the field maintenance personnel to determine the maintenance priority of each compensation capacitor and provide the basis for the key monitoring and preventive maintenance of compensation capacitors.
- jointless track circuit /
- compensation capacitor /
- disconnection fault /
- reliability truth table /
- importance evaluation

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图 1 JTC系统基本结构

Figure 1. Basic structure of JTC system

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图 2 调整态模型

Figure 2. Adjustment state model

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图 3 分路态模型

Figure 3. Shunt state model

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图 4 补偿电容不同断线故障类型下对应的最小分路电流和接收电压

Figure 4. Minimun shunt current and receiving voltage corresponding to different disconnection fault types of compensation capacitors

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图 5 补偿电容重要性评估流程

Figure 5. Flow chart of importance evaluation of compensation capacitance

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图 6 各补偿电容重要度系数

Figure 6. Importance coefficient of each compensation capacitor

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图 7 道床电阻为1.7 Ω·km时各补偿电容重要度系数

Figure 7. Importance coefficient of each compensation capacitance when ballast bed resistance is 1.7 Ω· km

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图 8 道床电阻为2.3 Ω·km时各补偿电容重要度系数

Figure 8. Importance coefficient of each compensation capacitance when ballast bed resistance is 2.3 Ω· km

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表 1 部分JTC可靠性真值表

Table 1. Partial JTC reliability truth table

D(i)	含义	A_TZ(i)/V	A_FLmin(i)/A	S(i)	含义
0000000000	补偿电容全部正常	0.4322	0.7920	0	正常
0000000001	C₁₀故障	0.3810	0.6754	0	正常
0000000100	C₈故障	0.3702	0.7571	0	正常
0001000000	C₄故障	0.3302	0.6725	0	正常
0010000000	C₃故障	0.3520	0.6087	0	正常
1000000000	C₁故障	0.3885	0.6397	0	正常
0000001100	C₇,C₈故障	0.2641	0.5487	0	正常
0000010001	C₆,C₁₀故障	0.3496	0.4968	0	正常
0000110000	C₅,C₆故障	0.3636	0.4937	0	正常
0001100000	C₄,C₅故障	0.3188	0.4874	0	正常
0010001000	C₃,C₇故障	0.2688	0.4769	0	正常
0011000000	C₃,C₄故障	0.2631	0.4475	1	失效
0100000001	C₂,C₁₀故障	0.4488	0.4586	0	正常
0110000000	C₂,C₃故障	0.4515	0.4044	1	失效
1000010000	C₁,C₆故障	0.4260	0.5226	0	正常
1100000000	C₁,C₂故障	0.3891	0.4471	1	失效
0000000111	C₈,C₉,C₁₀故障	0.2983	0.4622	0	正常
0000011001	C₆,C₇,C₁₀故障	0.2873	0.4433	1	失效
0010000011	C₅,C₇,C₈故障	0.3547	0.6094	0	正常
0000011100	C₆,C₇,C₈故障	0.2720	0.4073	1	失效
0010001001	C₃,C₇,C₁₀故障	0.2721	0.4680	0	正常
0010001100	C₃,C₇,C₈故障	0.2156	0.3644	1	失效
0100000011	C₂,C₉,C₁₀故障	0.3988	0.3855	1	失效
0100110000	C₂,C₅,C₆故障	0.4567	0.4165	1	失效
0110001010	C₂,C₃,C₇,C₉故障	0.3918	0.3389	1	失效
1000000111	C₁,C₈,C₉,C₁₀故障	0.1880	0.3686	1	失效
0101101100	C₂,C₄,C₅,C₇,C₈故障	0.3546	0.5155	0	正常
1111111111	补偿电容全部故障	0.1070	0.1143	1	失效

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