A method for controlling the setting value of rail potential limiting device applied to rail transit yards

Abstract

The invention discloses a setting value control method for a rail potential limiting device applied to a rail transit section yard, specifically: real-time monitoring of a trigger signal of a train position signal sensor installed in a throat area, judging the trigger signal of the train position signal sensor, if the trigger signal is Trigger On, the setting value of each rail potential limiting device in the section yard is set to a setting value 1, and the setting value is consistent with the setting value of the rail potential limiting device in the main line station, that is, the first section setting value is 120V, the second section setting value is 200V, and the third section setting value is 600V; if the trigger signal is Trigger Off, the setting value of each rail potential limiting device in the section yard is set to a setting value 2, and the setting value is specifically considered from the perspective of the safety of the section yard maintenance personnel: the first section setting value is 60V, the second section setting value is 200V, and the third section setting value is 600V. The invention has the characteristics of low cost and simple control logic.

Description

Technical Field

[0001] The present invention belongs to the technical field of rail transit, and in particular relates to a setting value control method of a rail potential limiting device applied to a rail transit section yard. Background Art

[0002] At present, rail potential limiting devices are generally installed at the sections and yards of rail transit lines at home and abroad, and blocking connection devices are generally connected in parallel to the rail insulation joints in the throat area and the rail insulation joints at the section yard.

[0003] When the setting value of the rail potential limiting device at the section yard is consistent with the setting value of the rail potential limiting device at each station on the main line, the rail potential at the section yard will exceed the safety threshold specified by the national standard, making it difficult to ensure the safety of the section yard maintenance personnel;

[0004] From the perspective of ensuring the safety of maintenance personnel in the section yard, the setting value of the rail potential limiting device at the section yard is often lower than the setting value of the rail potential limiting device at each station on the main line. When the train passes through the rail insulation joint in the throat area, regardless of whether the blocking connection device is closed, the train body will short-circuit the main line rail and the section yard rail. At this time, the rail potential of the section yard is consistent with the rail potential of the main line, which inevitably leads to frequent operation of the rail potential limiting device at the section yard, grounding the section yard rail, and clamping the rail potential of the section yard to zero, significantly raising the rail potential of the farther section of the main line, causing the rail potential limiting device at each station on the main line to frequently operate until it is locked, so that the entire system works in a single-end grounding state, seriously deteriorating the rail potential of the entire line;

[0005] At present, the setting value of the rail potential limiting device at the section yard in the rail transit field is still mainly set based on experience, and it is impossible to dynamically set the setting value of the rail potential limiting device at the section yard according to the actual situation of whether the train passes through the rail insulation joint in the throat area. Summary of the invention

[0006] In order to solve the problem that the rail potential limiting device at the section yard and the main line rail potential limiting device are frequently activated when the train passes through the rail insulation joint in the throat area, the present invention provides a setting value control method of the rail potential limiting device applied to the rail transit section yard.

[0007] A method for controlling a setting value of a rail potential limiting device applied to a rail transit section yard of the present invention is specifically as follows:

[0008] Step 1: Monitor the trigger signal of the train position signal sensor installed in the throat area in real time, and define "train position signal sensor triggered" as Trigger On; "train position signal sensor not triggered" as Trigger Off.

[0009] Step 2: Determine the trigger signal of the train position signal sensor. If the trigger signal is Trigger On, the setting value of each rail potential limiting device in the section yard is set to setting value 1. This setting value is consistent with the setting value of the rail potential limiting device in the mainline station, that is, the setting value of the first section is 120V, the setting value of the second section is 200V, and the setting value of the third section is 600V; if the trigger signal is Trigger Off, the setting value of each rail potential limiting device in the section yard is set to setting value 2. Considering the working safety of the section yard maintenance personnel, the setting value is specifically: the setting value of the first section is 60V, the setting value of the second section is 200V, and the setting value of the third section is 600V.

[0010] The trigger signal of the above-mentioned train position signal sensor is obtained by an infrared beam sensor, a proximity switch sensor or an ultrasonic sensor, and the trigger signal is transmitted to the section yard via an Ethernet wired connection, a 4G wireless network or WiFi.

[0011] Furthermore, the train position signal sensor is not triggered by default, the trigger signal is Trigger Off by default, and the setting value of each rail potential limiting device in the section yard is set to setting value 2 by default.

[0012] The beneficial technical effects of the present invention are:

[0013] The method for controlling the setting value of the rail potential limiting device in the rail transit section yard proposed in the present invention has the characteristics of low cost and simple control logic. Compared with the prior art, it can effectively set the setting value of the rail potential limiting device in the section yard in real time and dynamically according to different situations (whether the train passes through the rail insulation joint in the throat area), which can not only ensure the safety of the maintenance personnel in the section yard, but also reduce the number of actions of the rail potential limiting device in the section yard and the main line rail potential limiting device. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the structure of the rail potential limiting device at the section yard;

[0015] Figure 2 The present invention is a schematic flow chart of a method for controlling a set value of a rail potential limiting device in a rail transit section. DETAILED DESCRIPTION

[0016] The present invention is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0017] like Figure 1The structure of the rail potential limiting device at the section yard is shown. The train position signal sensor is installed in the throat area to monitor the train position in real time. When the train passes through the rail insulation joint in the throat area, the car body short-circuits the mainline rail and the section yard rail. The train position signal sensor is triggered, and the trigger signal of the train position signal sensor can be obtained by infrared beam sensors, proximity switch sensors, ultrasonic sensors, etc. The trigger signal can be transmitted to the section yard through Ethernet wired connection, 4G wireless network, WiFi, etc.

[0018] The present invention provides a method for controlling a setting value of a rail potential limiting device applied to a rail transit section. Figure 2 As shown, specifically:

[0019] Step 1: Monitor the trigger signal of the train position signal sensor installed in the throat area in real time, and define "train position signal sensor triggered" as Trigger On; "train position signal sensor not triggered" as Trigger Off.

[0020] Step 2: Determine the trigger signal of the train position signal sensor. If the trigger signal is Trigger On, the setting value of each rail potential limiting device in the section yard is set to setting value 1. This setting value is consistent with the setting value of the rail potential limiting device in the main line station, that is, the setting value of the first section is 120V, the setting value of the second section is 200V, and the setting value of the third section is 600V; if the trigger signal is Trigger Off, the setting value of each rail potential limiting device in the section yard is set to setting value 2. From the perspective of the safety of the section yard maintenance personnel, the setting value is specifically: the setting value of the first section is 60V, the setting value of the second section is 200V, and the setting value of the third section is 600V. The train position signal sensor is not triggered by default, the trigger signal defaults to Trigger Off, and the setting value of each rail potential limiting device in the section yard is set to setting value 2 by default.

Claims

1. A method for controlling the setting value of a rail potential limiting device applied to a rail transit section, characterized in that: Specifically: Step 1: Monitor the trigger signal of the train position signal sensor installed in the throat area in real time, and define "train position signal sensor triggered" as Trigger On; "train position signal sensor not triggered" as Trigger Off; Step 2: Determine the trigger signal of the train position signal sensor. If the trigger signal is Trigger On, the setting value of each rail potential limiting device in the section yard is set to setting value 1. This setting value is consistent with the setting value of the rail potential limiting device in the mainline station, that is, the setting value of the first section is 120V, the setting value of the second section is 200V, and the setting value of the third section is 600V; if the trigger signal is Trigger Off, the setting value of each rail potential limiting device in the section yard is set to setting value 2. Considering the working safety of the section yard maintenance personnel, the setting value is specifically: the setting value of the first section is 60V, the setting value of the second section is 200V, and the setting value of the third section is 600V.

2. The method for controlling the setting value of a rail potential limiting device applied to a rail transit section yard according to claim 1 is characterized in that: The trigger signal of the train position signal sensor is obtained by an infrared beam sensor, a proximity switch sensor or an ultrasonic sensor, and the trigger signal is transmitted to the section yard via an Ethernet wired connection, a 4G wireless network or a WiFi method.

3. The method for controlling the setting value of a rail potential limiting device applied to a rail transit section yard according to claim 1 is characterized in that: The train position signal sensor is not triggered by default, the trigger signal is Trigger Off by default, and the setting value of each rail potential limiting device in the section yard is set to setting value 2 by default.

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