Static regulation power supply system suitable for four-rail backflow and control method

Abstract

The invention relates to a static adjustment power supply system suitable for four-rail backflow and a control method, and the static adjustment power supply system comprises a bipolar isolation switch cabinet, a first static adjustment power supply cabinet, a second static adjustment power supply cabinet, a first three-position isolation switch cabinet, and a second three-position isolation switch cabinet. One pole of a bipolar isolation switch in the bipolar isolation switch cabinet can be converted into two paths of output after being electrified, and is electrically connected with the first static adjustment power supply cabinet and the second static adjustment power supply cabinet respectively; the other pole of the bipolar isolation switch is electrically connected with a moving contact in a first three-position isolation switch in the first three-position isolation switch cabinet and a moving contact in a second three-position isolation switch in the second three-position isolation switch cabinet respectively; a first static contact in the three-position isolation switch is electrically connected to the C3 backflow rail, and a second static contact in the three-position isolation switch is electrically connected to the C4 backflow rail. The static adjustment power supply system provided by the invention can realize instant breaking isolation and conduction of a DC 1500V power supply and return circuit, and effectively prevents personnel from electric shock injury.

Description

Technical Field

[0001] The invention relates to the field of urban rail transit vehicle maintenance and debugging equipment, and in particular to a statically adjustable power supply system suitable for four-rail return and a control method thereof. Background Art

[0002] The static power supply system is an important inspection equipment before the subway train is put into use after maintenance. The conventional static power supply system is mainly composed of a static power supply cabinet and a winding reel. For lines using four-track return power supply, according to the operating requirements of the conventional static power supply system, after the static adjustment operation is completed, the DC1500V power supply of the static power supply system is disconnected and isolated, but the return line of the dedicated return rail in the depot is still connected to the return line of the system outside the depot, so there is still the possibility of electric shock injury due to system leakage or personnel misoperation.

[0003] In addition, the conventional static power system for warehouses cannot judge the on / off working conditions of the vehicle returners. When the static power system is powered by DC1500V, there is a risk of electric shock injury when the vehicle returners are not connected to the dedicated return rails, which may cause the vehicle returners to be energized.

[0004] Therefore, there is an urgent need for a safe and reliable static-regulating power supply system that can meet the static-regulating requirements of a four-rail return power supply system. Summary of the invention

[0005] In response to the above problems, a static-regulated power supply system suitable for four-rail return is now provided, which aims to avoid the risk of electric shock and the influence of stray current, realize the instant disconnection, isolation and conduction of DC1500V power supply and return lines inside and outside the warehouse, and the safe protection of the static-regulated power supply cabinet.

[0006] The specific technical solutions are as follows: The first aspect of the present invention is to provide a statically regulated power supply system suitable for four-rail return, comprising: a bipolar isolating switch cabinet, a first statically regulated power supply cabinet, a second statically regulated power supply cabinet, a first three-position isolating switch cabinet, and a second three-position isolating switch cabinet; One pole of the bipolar isolating switch in the bipolar isolating switch cabinet can be converted into two outputs after being powered on, and is electrically connected to the first statically adjustable power supply cabinet and the second statically adjustable power supply cabinet respectively; the first statically adjustable power supply cabinet can be electrically connected to the first vehicle garage socket, and the second statically adjustable power supply cabinet can be electrically connected to the second vehicle garage socket; The other pole of the bipolar isolating switch is electrically connected to the moving contacts of the first three-position isolating switch in the first three-position isolating switch cabinet and the second three-position isolating switch in the second three-position isolating switch cabinet respectively; The first static contacts in the first three-position disconnector and the second three-position disconnector are both electrically connected to the C3 return rail, and the second static contacts in the first three-position disconnector and the second three-position disconnector are respectively electrically connected to the C4 return rail.

[0007] Furthermore, the first statically controlled power supply cabinet is grounded.

[0008] Furthermore, the second statically controlled power supply cabinet is grounded.

[0009] Furthermore, the first three-position isolating switch cabinet is grounded.

[0010] Furthermore, the second three-position isolating switch cabinet is grounded.

[0011] Furthermore, the return line of the first statically controlled power supply cabinet is introduced into the first three-position isolating switch cabinet.

[0012] Furthermore, the return line of the second statically controlled power supply cabinet is introduced into the second three-position isolating switch cabinet.

[0013] The second aspect of the present invention is to provide a static power supply control method applicable to four-rail return, comprising: When the C3 track is powered, it is first connected to the C3 return rail through the first static contact in the first three-position disconnector cabinet, and then connected to the first vehicle garage socket through the bipolar disconnector and the first static power supply cabinet in sequence; When the C3 track is disconnected, first disconnect the plug in the first static power supply cabinet, and then disconnect the return line in the first three-position disconnector cabinet; When the C4 track is powered, it is first connected to the C4 return rail through the second static contact in the second three-position disconnector cabinet, and then connected to the socket for the second vehicle garage through the bipolar disconnector and the second static power supply cabinet in sequence; When the C4 track is disconnected, first disconnect the plug in the second static power supply cabinet, and then disconnect the return line in the second three-position disconnector cabinet.

[0014] The beneficial effects of the above scheme are: 1) The static power supply system provided in this application can realize the instant disconnection, isolation and conduction of the DC1500V power supply and return lines, effectively preventing electric shock injuries to personnel; 2) The static power supply system provided in this application improves the safety protection of power supply, effectively avoiding the risk of electric shock injury caused by the vehicle returner being charged when the vehicle returner is not connected to the dedicated return rail and can still receive power; 3) In the static power supply system provided in this application, two return tracks with different definitions are set through the operation button of the three-position isolating switch, which not only ensures dedicated return but also takes into account the use of different tracks, thereby ensuring the effective utilization efficiency of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of a static power supply system provided in an embodiment of the present invention.

[0016] In the attached drawings: 1. Bipolar isolating switch cabinet; 2. First static-adjusting power supply cabinet; 3. Second static-adjusting power supply cabinet; 4. First three-position isolating switch cabinet; 5. Second three-position isolating switch cabinet. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0019] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but they are not intended to limit the present invention.

[0020] like Figure 1 As shown, the static regulating power supply system suitable for four-rail return provided in the embodiment of the present invention includes: a bipolar isolating switch cabinet 1, a first static regulating power supply cabinet 2, a second static regulating power supply cabinet 3, a first three-position isolating switch cabinet 4, and a second three-position isolating switch cabinet 5; one pole of the bipolar isolating switch in the bipolar isolating switch cabinet 1 can be connected to DC1500V or DC110V and then converted into two outputs, and are respectively electrically connected to the first static regulating power supply cabinet 2 and the second static regulating power supply cabinet 3; the first static regulating power supply cabinet 2 can be electrically connected to the first vehicle garage socket, and the second static regulating power supply cabinet 3 can be electrically connected to the second vehicle garage socket; the other pole of the bipolar isolating switch is respectively electrically connected to the moving contacts of the first three-position isolating switch in the first three-position isolating switch cabinet 4 and the second three-position isolating switch in the second three-position isolating switch cabinet 5; the first static contacts in the first three-position isolating switch and the second three-position isolating switch are respectively electrically connected to the C3 return rail, and the second static contacts in the first three-position isolating switch and the second three-position isolating switch are respectively electrically connected to the C4 return rail.

[0021] When the above system is applied to two tracks, it corresponds to two systems (one system includes a static power supply cabinet and a three-position isolating switch cabinet). Each system can be connected to any two tracks, and the two isolating switch cabinets are also interlocked. When the system is working, the dedicated return rails of the C3 and C4 tracks are disconnected from the return lines of the entire line. Only when in use can the three-position isolating switch cabinet be used to achieve conduction. Therefore, when the operation is stopped, the return rails inside and outside the warehouse are disconnected, which avoids the risk of electric shock to the staff in the warehouse.

[0022] In the above system, two return tracks with different definitions (such as return 1 and return 2) are set through the operation button of the three-position isolating switch. While ensuring dedicated return, it satisfies different track operations through switching, takes into account the use of different tracks, and ensures the effective utilization efficiency of the equipment.

[0023] To avoid static electricity, the static-adjusting power supply cabinet, the three-position isolating switch cabinet, etc. in the present invention are all grounded.

[0024] The control method of the static power supply applicable to the four-rail return in the present invention is: When the C3 track is powered, it is first connected to the C3 return rail through the first static contact in the first three-position disconnector cabinet 4, and then connected to the first vehicle garage socket through the bipolar disconnector and the first static power supply cabinet 2 in sequence; When the C3 track is disconnected, the plug in the first static power supply cabinet 2 is disconnected first, and then the return line in the first three-position disconnector cabinet 4 is disconnected; When the C4 track is powered, it is first connected to the C4 return rail through the second static contact in the second three-position disconnector cabinet 5, and then connected to the second vehicle garage socket through the bipolar disconnector and the second static power supply cabinet 3 in sequence; When the C4 track is disconnected, the plug in the second static power supply cabinet 3 is disconnected first, and then the return line in the second three-position disconnector cabinet 5 is disconnected.

[0025] In the present invention, the vehicle feeds back the return device working condition signal to the static power supply cabinet, and the static power supply cabinet monitoring circuit determines the return device opening and closing conditions to implement locking control. When the vehicle cannot provide this signal, a vehicle online monitoring logic circuit is set to supplement this logical judgment.

[0026] The above are only preferred embodiments of the present invention, and are not intended to limit the implementation methods and protection scope of the present invention. Those skilled in the art should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A static power supply system suitable for four-rail return, characterized in that: include: Bipolar isolating switch cabinet, first static power supply cabinet, second static power supply cabinet, first three-position isolating switch cabinet, second three-position isolating switch cabinet; One pole of the bipolar isolating switch in the bipolar isolating switch cabinet can be converted into two outputs after being powered on, and is electrically connected to the first static power supply cabinet and the second static power supply cabinet respectively; the first static power supply cabinet can be electrically connected to the socket for the first vehicle garage, and the second static power supply cabinet can be electrically connected to the socket for the second vehicle garage; The other pole of the bipolar isolating switch is electrically connected to the moving contacts of the first three-position isolating switch in the first three-position isolating switch cabinet and the second three-position isolating switch in the second three-position isolating switch cabinet respectively; The first static contacts in the first three-position disconnector and the second three-position disconnector are both electrically connected to the C3 return rail, and the second static contacts in the first three-position disconnector and the second three-position disconnector are respectively electrically connected to the C4 return rail.

2. The statically regulated power supply system suitable for four-rail return according to claim 1, characterized in that: The first static power supply cabinet is grounded.

3. The statically regulated power supply system suitable for four-rail return according to claim 1, characterized in that: The second statically controlled power supply cabinet is grounded.

4. The statically regulated power supply system suitable for four-rail return according to claim 1, characterized in that: The first three-position isolating switch cabinet is grounded.

5. The statically regulated power supply system suitable for four-rail return according to claim 1, characterized in that: The second three-position isolating switch cabinet is grounded.

6. The statically regulated power supply system suitable for four-rail return according to claim 1, characterized in that: The return line of the first static power supply cabinet is introduced into the first three-position isolating switch cabinet.

7. The statically regulated power supply system suitable for four-rail return according to claim 1, characterized in that: The return line of the second statically controlled power supply cabinet is introduced into the second three-position isolating switch cabinet.

8. A static power supply control method suitable for four-rail return, characterized in that: include: When the C3 track is powered, it is first connected to the C3 return rail through the first static contact in the first three-position disconnector cabinet, and then connected to the first vehicle garage socket through the bipolar disconnector and the first static power supply cabinet in sequence; When the C3 track is disconnected, first disconnect the plug in the first static power supply cabinet, and then disconnect the return line in the first three-position disconnector cabinet; When the C4 track is powered, it is first connected to the C4 return rail through the second static contact in the second three-position disconnector cabinet, and then connected to the second vehicle garage socket through the bipolar disconnector and the second static power supply cabinet in sequence; When the C4 track is disconnected, first disconnect the plug in the second static power supply cabinet, and then disconnect the return line in the second three-position disconnector cabinet.

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