CN205911811U - A multi-channel intelligent maintenance auxiliary power supply system for EMUs - Google Patents

Abstract

The utility model provides a multi-channel intelligent maintenance auxiliary power supply system for EMUs, which includes an incoming line cabinet, a controller, at least two AC cabinets, an AC switching cabinet AC, at least two DC cabinets, a DC switching cabinet DC and at least two Group outlet boxes. The EMU multi-channel intelligent maintenance auxiliary power supply system described in the utility model realizes the multi-line power supply of the socket box. When the DC cabinet or the AC cabinet fails, the system can switch and transform the socket through the AC switching cabinet and the DC switching cabinet. The power supply line of the box makes the maintenance of the AC cabinet and the DC cabinet not affect the power supply of the power supply system, and improves the fault support performance of the system.

Description

A multi-channel intelligent maintenance auxiliary power supply system for EMUs

technical field

The utility model belongs to the technical field of high-speed EMUs, in particular to an intelligent maintenance auxiliary power supply system of the Harmony CRH6 intercity EMU independently developed by my country.

Background technique

The existing EMU maintenance auxiliary power supply system needs to ensure the continuous power supply of the socket box before the EMU enters, and eliminate the risk components in the maintenance auxiliary power supply system in time, because once the components in the maintenance auxiliary power supply system are damaged , will affect the power supply of a series of socket boxes where it is located, and the maintenance personnel need to repair or replace the device before continuing the maintenance work of the EMU, which brings inconvenience to the rapid maintenance of the EMU.

Contents of the invention

In view of this, the utility model aims to propose a multi-channel intelligent maintenance auxiliary power supply system for EMUs, so as to realize rapid maintenance of EMUs and support for failures of the maintenance auxiliary power supply system.

In order to achieve the above object, the technical solution of the utility model is achieved in that:

A multi-channel intelligent maintenance auxiliary power supply system for EMUs, including a line incoming cabinet, a controller, at least two AC cabinets, an AC switching cabinet AC, at least two DC cabinets, a DC switching cabinet DC, and at least two sets of socket boxes;

The input end of the incoming line cabinet is connected to the industrial power supply port, and the output end includes a plurality of power switches and an output switch, and the output ends of the multiple power switches are respectively connected to the power supplies of the controller, the AC cabinet, and the DC cabinet. The input ends are connected in one-to-one correspondence, and the output ends of the output switch are electrically connected to the input ends of the AC direct contactors J2 on all socket boxes;

The numbers of the AC cabinets and the DC cabinets are in one-to-one correspondence with the numbers of the outlet boxes;

Each of the AC cabinets includes an AC output switch;

The AC switching cabinet includes multiple AC input contactors and multiple AC output contactors;

The input ends of the plurality of AC input contactors correspond to and are connected to the output ends of all the AC output switches of the AC cabinets one by one, and the plurality of AC output contactors are connected to the plurality of AC input contactors one by one. Correspondingly, the output ends of the plurality of AC output contactors are connected to the output ends of the plurality of AC input contactors in one-to-one correspondence, and the input ends of the plurality of AC output contactors are connected to any non-corresponding AC input contactors The output terminal connection;

The output end of each said AC output contactor is electrically connected to the input end of the AC contactor J1 on each set of outlet boxes in a corresponding group of outlet boxes;

Each of the DC cabinets includes a set of DC output switch groups;

The DC switching cabinet includes multiple sets of DC input contactors and multiple sets of DC output contactors;

The input ends of the multiple sets of DC input contactors are in one-to-one correspondence with the output ends of all the DC output switch groups of the DC cabinets, and the multiple sets of DC output contactors are connected to the multiple sets of DC input contactors. One-to-one correspondence, the output ends of the multiple sets of DC output contactors correspond to and are connected correspondingly to the output ends of the multiple sets of DC input contactors, and the input ends of the multiple sets of DC output contactors are not corresponding to any set of The output end of the DC input contactor is connected correspondingly;

The output ends of each group of said DC output contactors are electrically connected to the input ends of the DC contactor groups on each set of socket boxes in the corresponding group of socket boxes;

The AC cabinet, the AC switching cabinet, the DC cabinet, the DC switching cabinet, and the outlet box are all connected to the controller signal.

Further, the outlet box is provided with two groups.

Further, the number of socket boxes in each group of socket boxes is 8 sets.

Further, there are two AC cabinets, namely AC cabinet A1 and AC cabinet A2, the AC output switch in the AC cabinet A1 is the AC output switch A1K, and the AC output switch in the AC cabinet A2 is the AC output Switch A2K.

Further, the AC switching cabinet includes an AC input contactor ACJ1, an AC input contactor ACJ2, an AC output contactor ACJ3, and an AC output contactor ACJ4, and the input terminal of the AC input contactor ACJ1 is electrically connected to the output terminal of the AC output switch A1K. connection, the input end of the AC input contactor ACJ2 is electrically connected to the output end of the AC output switch A2K, the output end of the AC input contactor ACJ1 is electrically connected to the output end of the AC output contactor ACJ3, and the output end of the AC input contactor ACJ2 is electrically connected to the output end of the AC output switch A2K. The output end of the AC output contactor ACJ4 is electrically connected, the input end of the AC output contactor ACJ3 is electrically connected to the output end of the AC input contactor ACJ2, and the input end of the AC output contactor ACJ4 is electrically connected to the output end of the AC input contactor ACJ1 .

Further, there are two DC cabinets, namely DC cabinet D1 and DC cabinet D2.

Further, the DC output switch group in the DC cabinet D1 includes a first DC output switch D1K1 and a second DC output switch D1K2, and the DC output switch group in the DC cabinet D2 includes a first DC output switch D2K1 and a second DC output switch D1K2. The second DC output switch D2K2.

Further, the DC switching cabinet includes two sets of DC input contactors and two sets of DC output contactors, one set of DC input contactors includes the first DC input contactor DCJ4 and the second DC input contactor DCJ3, and the other set The DC input contactors include a first DC input contactor DCJ2 and a second DC input contactor DCJ1;

A set of DC output contactors includes a first DC output contactor DCJ8 and a second DC output contactor DCJ7, and another set of DC output contactors includes a first DC output contactor DCJ6 and a second DC output contactor DCJ5;

The input terminal of the first DC input contactor DCJ4 is electrically connected to the output terminal of the first DC output switch D1K1, and the input terminal of the second DC input contactor DCJ3 is electrically connected to the output terminal of the second DC output switch D1K2;

The input end of the first DC input contactor DCJ2 is electrically connected to the output end of the first DC output switch D2K1, and the input end of the second DC input contactor DCJ1 is electrically connected to the output end of the second DC output switch D2K2;

The output end of the first DC input contactor DCJ4 is electrically connected to the output end of the first DC output contactor DCJ8, and the output end of the second DC input contactor DCJ3 is electrically connected to the output end of the second DC output contactor DCJ7;

The output end of the first DC input contactor DCJ2 is electrically connected to the output end of the first DC output contactor DCJ6, and the output end of the second DC input contactor DCJ1 is electrically connected to the output end of the second DC output contactor DCJ5;

The input end of the first DC output contactor DCJ8 is electrically connected to the output end of the first DC input contactor DCJ2, and the input end of the second DC output contactor DCJ7 is electrically connected to the output end of the second DC input contactor DCJ1;

The input end of the first DC output contactor DCJ6 is electrically connected to the output end of the first DC input contactor DCJ4, and the input end of the second DC output contactor DCJ5 is electrically connected to the output end of the second DC input contactor DCJ3.

Further, the DC contactor group includes a first DC contactor J4 and a second DC contactor J3, the first DC output contactor DCJ8 and the second DC output contactor DCJ7 in a group of DC output contactors The output ends are respectively electrically connected to the input ends of the first DC contactor J4 and the second DC contactor J3 on each set of outlet boxes in one group of outlet boxes, and the first DC output contacts in the other group of DC output contactors The output terminals of the DC output contactor DCJ6 and the second DC output contactor DCJ5 are respectively electrically connected to the input terminals of the first DC contactor J4 and the second DC contactor J3 on each set of socket boxes in another set of socket boxes.

Further, the outlet box is provided with an AC direct contactor J2, an AC contactor J1, a first DC contactor J4, a second DC contactor J3, a first socket C1, a second socket C2 and a third socket C3, the output ends of the AC direct contactor J2 and the AC contactor J1 are electrically connected to the input end of the first socket C1, and the output end of the first DC contactor J4 is electrically connected to the input end of the second socket C2 , the output end of the second DC contactor J3 is electrically connected to the input end of the third socket C3.

Further, both the AC output switch A1K and the AC output switch A2K output AC voltage of 400V on a single-phase line.

Further, the first DC output switch D1K1 and the first DC output switch D2K1 both output 110V DC voltage, and the second DC output switch D1K2 and the second DC output switch D2K2 both output 24V DC voltage.

Further, the controller is provided with a communication interface.

Further, the output terminal of the incoming line cabinet includes a power switch K1, a power switch K2, a power switch K3, a power switch K4, a power switch K5 and an output switch K6, and the output terminal of the power switch K1 It is electrically connected to the power input end of the AC cabinet A1, the output end of the power switch K2 is electrically connected to the power input end of the AC cabinet A2, and the power switch K3 is connected to the power input of the DC cabinet D1. Terminals are electrically connected, the power switch K4 is electrically connected to the power input end of the DC cabinet D2, the power switch K5 is electrically connected to the power input end of the controller, and the output switch K6 is connected to all outlet boxes The input end of the AC direct-connected contactor J2 is electrically connected.

Compared with the prior art, the EMU multi-channel intelligent maintenance auxiliary power supply system described in the utility model has the following advantages:

(1) The EMU multi-channel intelligent maintenance auxiliary power supply system described in the utility model realizes the multi-line power supply of the socket box. When the DC cabinet or the AC cabinet fails, the system can pass through the AC switching cabinet and the DC switching cabinet. Switching and transforming the power supply line of the socket box makes the maintenance of the AC cabinet and the DC cabinet not affect the power supply of the power supply system, and improves the fault support performance of the system.

Description of drawings

The accompanying drawings constituting a part of the utility model are used to provide a further understanding of the utility model, and the schematic embodiments of the utility model and their descriptions are used to explain the utility model, and do not constitute improper limitations to the utility model. In the attached picture:

Fig. 1 is the schematic diagram of the principle of the multi-channel intelligent maintenance auxiliary power supply system of the EMU described in the embodiment of the utility model;

Figure 2 is an enlarged view of H1 in Figure 1;

Figure 3 is an enlarged view of H2 in Figure 1;

Fig. 4 is an enlarged view of H3 in Fig. 1 .

detailed description

It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

In describing the present utility model, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", The orientations or positional relationships indicated by "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention. Novel and simplified descriptions do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be construed as limiting the utility model. In addition, the terms "first", "second", etc. are used for descriptive purposes only, and should not be interpreted as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, a feature defined as "first", "second", etc. may expressly or implicitly include one or more of that feature. In the description of the present utility model, unless otherwise specified, "plurality" means two or more.

In the description of the present utility model, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a flexible connection. Detachable connection, or integral connection; it can be mechanical connection or electrical connection; it can be direct connection or indirect connection through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention through specific situations.

The utility model will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

As shown in Figure 1, the utility model includes an incoming line cabinet, a controller, at least two AC cabinets, an AC switching cabinet AC, at least two DC cabinets, a DC switching cabinet DC and at least two sets of socket boxes;

The input end of the incoming line cabinet is connected to the industrial power supply port, the industrial power supply port is a three-phase five-wire system, 380V alternating current, the output end of the incoming line cabinet includes a plurality of power switches and an output switch, and the multiple power supply ports The output ends of the electric switch are respectively connected to the power input ends of the controller, the AC cabinet, and the DC cabinet in one-to-one correspondence, and the output ends of the output switch are electrically connected to the input ends of the AC direct contactor J2 on all socket boxes , to directly provide 380V single-phase AC power for the socket box;

The numbers of the AC cabinets and the DC cabinets are in one-to-one correspondence with the number of groups of the outlet boxes, so as to facilitate the power supply of the AC cabinets and the DC cabinets in one-to-one correspondence with the groups of outlet boxes under normal working conditions;

Each of the AC cabinets includes an AC output switch;

The AC switching cabinet includes multiple AC input contactors and multiple AC output contactors;

The input ends of the plurality of AC input contactors correspond to and are connected to the output ends of all the AC output switches of the AC cabinets one by one, and the plurality of AC output contactors are connected to the plurality of AC input contactors one by one. Correspondingly, the output ends of the plurality of AC output contactors are connected to the output ends of the plurality of AC input contactors in one-to-one correspondence, and the input ends of the plurality of AC output contactors are connected to any non-corresponding AC input contactors The output terminal connection;

When all the AC cabinets are working normally, the multiple AC input contactors corresponding to all the AC cabinets are closed, the multiple AC output contactors corresponding to the multiple AC input contactors are in the disconnected state, and the multiple AC input contactors pass through The output terminals of the corresponding multiple AC output contactors directly supply power to the AC contactor J1 on each set of socket boxes in the multiple sets of socket boxes;

When one of the AC cabinets fails, the AC output switch of the faulty AC cabinet no longer outputs power, the corresponding AC input contactor is in the disconnected state, and the AC output contactor corresponding to the disconnected AC input contactor is closed. The AC output contactor in the closed state is powered by the non-corresponding AC input contactor electrically connected to its input terminal, which facilitates the fault maintenance of the AC cabinet, and during the fault repair process of the AC cabinet, the maintenance auxiliary power supply system normally supplies power;

The output end of each said AC output contactor is electrically connected to the input end of the AC contactor J1 on each set of outlet boxes in a corresponding group of outlet boxes;

Each of the DC cabinets includes a set of DC output switch groups;

The DC switching cabinet includes multiple sets of DC input contactors and multiple sets of DC output contactors;

The input ends of the multiple sets of DC input contactors are in one-to-one correspondence with the output ends of all the DC output switch groups of the DC cabinets, and the multiple sets of DC output contactors are connected to the multiple sets of DC input contactors. One-to-one correspondence, the output ends of the multiple sets of DC output contactors correspond to and are connected correspondingly to the output ends of the multiple sets of DC input contactors, and the input ends of the multiple sets of DC output contactors are not corresponding to any set of The output end of the DC input contactor is connected correspondingly;

When all DC cabinets are working normally, the multiple sets of DC input contactors corresponding to all DC cabinets are closed, the multiple sets of DC output contactors corresponding to the multiple sets of DC input contactors are in the open state, and the multiple sets of DC input contactors pass through The output terminals of the corresponding multiple sets of DC output contactors directly supply power to the DC contactor groups on each set of socket boxes in the corresponding multiple sets of socket boxes;

When one of the DC cabinets fails, the DC output switch of the faulty DC cabinet no longer outputs power, the corresponding DC input contactor is in the disconnected state, and the DC output contactor corresponding to the DC input contactor in the disconnected state is closed. The DC output contactor in the closed state supplies power through the non-corresponding DC input contactor electrically connected to its input terminal, which facilitates the fault maintenance of the DC cabinet, and during the fault repair process of the DC cabinet, the maintenance auxiliary power supply system normally supplies power;

The output ends of each group of said DC output contactors are electrically connected to the input ends of the DC contactor groups on each set of socket boxes in the corresponding group of socket boxes;

The AC cabinet, the AC switching cabinet, the DC cabinet, the DC switching cabinet, and the outlet box are all connected to the controller signal.

Further, the outlet box is provided with two groups.

Further, the number of socket boxes in each group of socket boxes is 8 sets.

Further, there are two AC cabinets, namely AC cabinet A1 and AC cabinet A2, the AC output switch in the AC cabinet A1 is the AC output switch A1K, and the AC output switch in the AC cabinet A2 is the AC output Switch A2K.

Further, the AC switching cabinet includes an AC input contactor ACJ1, an AC input contactor ACJ2, an AC output contactor ACJ3, and an AC output contactor ACJ4, and the input terminal of the AC input contactor ACJ1 is electrically connected to the output terminal of the AC output switch A1K. connection, the input end of the AC input contactor ACJ2 is electrically connected to the output end of the AC output switch A2K, the output end of the AC input contactor ACJ1 is electrically connected to the output end of the AC output contactor ACJ3, and the output end of the AC input contactor ACJ2 is electrically connected to the output end of the AC output switch A2K. The output end of the AC output contactor ACJ4 is electrically connected, the input end of the AC output contactor ACJ3 is electrically connected to the output end of the AC input contactor ACJ2, and the input end of the AC output contactor ACJ4 is electrically connected to the output end of the AC input contactor ACJ1 .

Further, there are two DC cabinets, namely DC cabinet D1 and DC cabinet D2.

Further, the DC output switch group in the DC cabinet D1 includes a first DC output switch D1K1 and a second DC output switch D1K2, and the DC output switch group in the DC cabinet D2 includes a first DC output switch D2K1 and a second DC output switch D1K2. The second DC output switch D2K2.

Further, the DC switching cabinet includes two sets of DC input contactors and two sets of DC output contactors, one set of DC input contactors includes the first DC input contactor DCJ4 and the second DC input contactor DCJ3, and the other set The DC input contactors include a first DC input contactor DCJ2 and a second DC input contactor DCJ1;

A set of DC output contactors includes a first DC output contactor DCJ8 and a second DC output contactor DCJ7, and another set of DC output contactors includes a first DC output contactor DCJ6 and a second DC output contactor DCJ5;

The input terminal of the first DC input contactor DCJ4 is electrically connected to the output terminal of the first DC output switch D1K1, and the input terminal of the second DC input contactor DCJ3 is electrically connected to the output terminal of the second DC output switch D1K2;

The input end of the first DC input contactor DCJ2 is electrically connected to the output end of the first DC output switch D2K1, and the input end of the second DC input contactor DCJ1 is electrically connected to the output end of the second DC output switch D2K2;

The output end of the first DC input contactor DCJ4 is electrically connected to the output end of the first DC output contactor DCJ8, and the output end of the second DC input contactor DCJ3 is electrically connected to the output end of the second DC output contactor DCJ7;

The output end of the first DC input contactor DCJ2 is electrically connected to the output end of the first DC output contactor DCJ6, and the output end of the second DC input contactor DCJ1 is electrically connected to the output end of the second DC output contactor DCJ5;

The input end of the first DC output contactor DCJ8 is electrically connected to the output end of the first DC input contactor DCJ2, and the input end of the second DC output contactor DCJ7 is electrically connected to the output end of the second DC input contactor DCJ1;

The input end of the first DC output contactor DCJ6 is electrically connected to the output end of the first DC input contactor DCJ4, and the input end of the second DC output contactor DCJ5 is electrically connected to the output end of the second DC input contactor DCJ3.

Further, the DC contactor group includes a first DC contactor J4 and a second DC contactor J3, the first DC output contactor DCJ8 and the second DC output contactor DCJ7 in a group of DC output contactors The output ends are respectively electrically connected to the input ends of the first DC contactor J4 and the second DC contactor J3 on each set of outlet boxes in one group of outlet boxes, and the first DC output contacts in the other group of DC output contactors The output terminals of the DC output contactor DCJ6 and the second DC output contactor DCJ5 are respectively electrically connected to the input terminals of the first DC contactor J4 and the second DC contactor J3 on each set of socket boxes in another set of socket boxes.

Further, the outlet box is provided with an AC direct contactor J2, an AC contactor J1, a first DC contactor J4, a second DC contactor J3, a first socket C1, a second socket C2 and a third socket C3, the output ends of the AC direct contactor J2 and the AC contactor J1 are electrically connected to the input end of the first socket C1, and the output end of the first DC contactor J4 is electrically connected to the input end of the second socket C2 , the output end of the second DC contactor J3 is electrically connected to the input end of the third socket C3.

Further, both the AC output switch A1K and the AC output switch A2K output AC voltage of 400V on a single-phase line.

Further, the first DC output switch D1K1 and the first DC output switch D2K1 both output 110V DC voltage, and the second DC output switch D1K2 and the second DC output switch D2K2 both output 24V DC voltage.

Further, the controller is provided with a communication interface.

Further, the output terminal of the incoming line cabinet includes a power switch K1, a power switch K2, a power switch K3, a power switch K4, a power switch K5 and an output switch K6, and the output terminal of the power switch K1 It is electrically connected to the power input end of the AC cabinet A1, the output end of the power switch K2 is electrically connected to the power input end of the AC cabinet A2, and the power switch K3 is connected to the power input of the DC cabinet D1. Terminals are electrically connected, the power switch K4 is electrically connected to the power input end of the DC cabinet D2, the power switch K5 is electrically connected to the power input end of the controller, and the output switch K6 is connected to all outlet boxes The input end of the AC direct-connected contactor J2 is electrically connected.

The utility model corresponds to different power supply lines through the corresponding switching between the AC input contactor and the AC output contactor in the AC switching cabinet AC and the corresponding switching between the DC input contactor and the DC output contactor in the DC switching cabinet DC. Taking two AC cabinets, two DC cabinets, and two groups of outlet boxes as examples, the power supply circuit of the present utility model is as follows.

AC Line 1:

(In the system, AC cabinet AC1 and AC cabinet AC2 respectively control a group of outlet boxes)

The power switch K1 of the incoming cabinet outputs 380V three-phase AC voltage → AC cabinet A1 filters, rectifies, and inverts, and the AC output switch A1K outputs single-phase AC voltage of 400V → AC input contactor ACJ1 in the AC switching cabinet AC sucks close, AC output contactor ACJ3 and AC output contactor ACJ4 are disconnected, AC input contactor ACJ1 outputs single-phase line 400V AC voltage through the output end of AC output contactor ACJ3 → each set in a group of socket boxes (1~8) The AC contactor J1 on the outlet box is closed, the AC direct contactor J2 is disconnected, and the output terminal of the AC contactor J1 outputs a single-phase line with a voltage of 400V AC → the first socket C1.

The power switch K2 of the incoming line cabinet outputs three-phase line 380V AC voltage → AC cabinet A2 filters, rectifies and inverts and outputs single-phase line 400V voltage AC power through AC output switch A2K → AC input contactor ACJ2 in the AC switch cabinet AC sucks close, AC output contactor ACJ3 and AC output contactor ACJ4 are disconnected, and AC input contactor ACJ2 outputs single-phase line 400V AC voltage through the output end of AC output contactor ACJ4 → each of the other group of outlet boxes (9~16) The AC contactor J1 on the socket box is closed, the AC direct contactor J2 is disconnected, and the output terminal of the AC contactor J1 outputs a single-phase 400V AC voltage → the first socket C1.

AC Line 2:

(The AC cabinet AC1 in the system is faulty, and the AC cabinet AC2 controls two sets of outlet boxes)

The power switch K2 of the incoming line cabinet outputs three-phase line 380V AC voltage → AC cabinet A2 filters, rectifies, inverts and outputs single-phase line 400V voltage AC power through AC output switch A2K → AC input contactor ACJ2 and AC input contactor in AC switching cabinet AC AC output contactor ACJ3 pulls in, AC input contactor ACJ1 and AC output contactor ACJ4 disconnect, and the output of AC input contactor ACJ2 is divided into two channels,

One way outputs single-phase line 400V AC voltage through the output terminal of AC output contactor ACJ4 → the AC contactor J1 on each set of socket boxes in the other group of socket boxes (9~16) is closed, and the AC direct contactor J2 is disconnected , the output end of AC contactor J1 outputs single-phase line 400V AC voltage → the first socket C1,

The other input is the input terminal of the AC output contactor ACJ3, and the output terminal of the AC output contactor ACJ3 outputs single-phase line 400V AC voltage → the AC contactor J1 on each set of socket boxes in a group of socket boxes (1~8) is closed , the AC direct contactor J2 is disconnected, and the output end of the AC contactor J1 outputs 400V single-phase AC voltage → the first socket C1.

AC Line 3:

(The AC cabinet AC2 in the system is faulty, and the AC cabinet AC1 controls two sets of outlet boxes)

The power switch K1 of the incoming cabinet outputs 380V three-phase AC voltage → AC cabinet A1 filters, rectifies, and inverts, and the AC output switch A1K outputs single-phase AC voltage of 400V → AC input contactor ACJ1 and AC input contactor in the AC switching cabinet AC AC output contactor ACJ4 pulls in, AC input contactor ACJ2 and AC output contactor ACJ3 disconnect, and the output of AC input contactor ACJ1 is divided into two channels,

One way outputs single-phase line 400V AC voltage through the output terminal of AC output contactor ACJ3 → AC contactor J1 on each set of socket boxes in a group of socket boxes (1~8) pulls in, AC direct contactor J2 disconnects, The output end of AC contactor J1 outputs single-phase line 400V AC voltage → the first socket C1,

The other input is input to the input terminal of AC output contactor ACJ4, and the output terminal of AC output contactor ACJ4 outputs single-phase line 400V AC voltage → the AC contactor J1 on each set of socket boxes in another group of socket boxes (9~16) sucks close, the AC direct contactor J2 is disconnected, and the output terminal of the AC contactor J1 outputs a single-phase line 400V AC voltage → the first socket C1.

AC Line 4:

(In the system, AC cabinet AC1 and AC cabinet AC2 both fail, and the output switch K6 of the incoming cabinet controls two sets of socket boxes)

The output switch K6 of the incoming cabinet outputs single-phase line 380V AC voltage → the AC direct-connection contactor J2 on each set of socket boxes in the two groups of socket boxes (1~16) is closed, the AC contactor J1 is disconnected, and the AC direct-connection The output end of the contactor J2 outputs a single-phase line with a voltage of 400V alternating current → the first socket C1.

DC Line 1:

(DC cabinet D1 and DC cabinet D2 respectively control a group of outlet boxes in the system)

The power switch K3 of the incoming line cabinet outputs three-phase line 380V AC voltage → the DC cabinet D1 filters and rectifies and outputs in two ways from the DC output switch component of the DC cabinet D1,

The first DC output switch D1K1 outputs 110V DC voltage → the first DC input contactor DCJ4 in the DC switching cabinet DC is closed, the first DC output contactor DCJ8 and the first DC output contactor DCJ6 are disconnected, and the first DC output contactor DCJ6 is disconnected. A DC input contactor DCJ4 outputs 110V voltage direct current through the output terminal of the first DC output contactor DCJ8 → the first DC contactor J4 on each set of socket boxes in a group of socket boxes (1-8) pulls in, The output terminal of the first DC contactor J4 outputs 110V voltage DC → the second socket C2,

The second DC output switch D1K2 outputs 24V DC voltage → the second DC input contactor DCJ3 in the DC switching cabinet DC is pulled in, the second DC output contactor DCJ7 and the second DC output contactor DCJ5 are disconnected, and the second DC input contactor DCJ3 outputs 24V voltage DC through the output terminal of the second DC output contactor DCJ7 → the second DC contactor J3 on each set of socket boxes in a group of socket boxes (1-8) pulls in, and the second DC contactor J3 The output end outputs 24V DC voltage → the third socket C3.

The power switch K4 of the incoming line cabinet outputs three-phase line 380V AC voltage → the DC cabinet D2 filters and rectifies and outputs in two ways from the DC output switch component of the DC cabinet D2,

The first DC output switch D2K1 outputs 110V DC voltage → the first DC input contactor DCJ2 in the DC switching cabinet DC is closed, the first DC output contactor DCJ6 and the first DC output contactor DCJ8 are disconnected, and the first DC output contactor DCJ8 is disconnected. A DC input contactor DCJ2 outputs 110V voltage DC through the output terminal of the first DC output contactor DCJ6 → the first DC contactor J4 on each set of socket boxes in the other group of socket boxes (9-16) pulls in , the output terminal of the first DC contactor J4 outputs 110V DC voltage → the second socket C2,

The second DC output switch D2K2 outputs 24V DC voltage → the second DC input contactor DCJ1 in the DC switching cabinet DC is pulled in, the second DC output contactor DCJ5 and the second DC output contactor DCJ7 are disconnected, and the second DC input contactor DCJ1 outputs 24V voltage DC through the output end of the second DC output contactor DCJ5 → the second DC contactor J3 on each set of socket boxes in another group of socket boxes (9-16) pulls in, and the second DC contactor J3 The output end of the output terminal outputs 24V voltage direct current → the third socket C3.

DC line 2:

(DC cabinet D1 in the system is faulty, DC cabinet D2 controls two sets of outlet boxes)

The power switch K4 of the incoming line cabinet outputs three-phase line 380V AC voltage → the DC cabinet D2 filters and rectifies and outputs in two ways from the DC output switch component of the DC cabinet D2,

The first DC output switch D2K1 outputs 110V voltage DC → the first DC input contactor DCJ2 and the first DC output contactor DCJ8 in the DC switching cabinet DC are engaged, and the first DC input contactor DCJ4 and the first DC The DC output contactor DCJ6 is disconnected, and the output of the first DC input contactor DCJ2 is divided into two paths,

One way is input to the first DC output contactor DCJ8, and the output terminal of the first DC output contactor DCJ8 outputs 110V DC voltage → the first DC contactor J4 on each set of socket boxes in a group of socket boxes (1-8) Pull in, the output terminal of the first DC contactor J4 outputs 110V voltage DC → the second socket C2,

The other way outputs 110V voltage DC through the output end of the first DC output contactor DCJ6 → the first DC contactor J4 on each set of socket boxes in another set of socket boxes (9-16) pulls in, the first DC The output terminal of the contactor J4 outputs 110V DC voltage → the second socket C2,

The second DC output switch D2K2 outputs 24V voltage direct current → the second DC input contactor DCJ1 and the second DC output contactor DCJ7 in the DC switching cabinet DC pull in, the second DC input contactor DCJ3 and the second DC output contactor DCJ5 disconnected, the output of the second DC input contactor DCJ1 is divided into two ways,

One way is input to the second DC output contactor DCJ7, and the output terminal of the second DC output contactor DCJ7 outputs 24V voltage direct current → the second DC contactor J3 on each set of socket boxes in a group of socket boxes (1-8) pulls in, The output terminal of the second DC contactor J3 outputs 24V DC voltage → the third socket C3,

The other way outputs 24V voltage direct current through the output end of the second DC output contactor DCJ5 → the second DC contactor J3 on each set of socket boxes in another set of socket boxes (9-16) pulls in, and the second DC contactor J3 The output end of the output terminal outputs 24V voltage direct current → the third socket C3.

DC line 3:

(DC cabinet D2 in the system fails, DC cabinet D1 controls two groups of outlet boxes)

The power switch K3 of the incoming line cabinet outputs the three-phase line 380V AC voltage → the DC cabinet D1 filters and rectifies and outputs in two ways from the DC output switch component of the DC cabinet D1,

The first DC output switch D1K1 outputs 110V DC voltage → the first DC input contactor DCJ4 and the first DC output contactor DCJ6 in the DC switching cabinet DC are engaged, and the first DC output contactor DCJ8 is connected to the first DC The DC input contactor DCJ2 is disconnected, and the output of the first DC input contactor DCJ4 is divided into two paths,

One way is input to the first DC output contactor DCJ6, and the output terminal of the first DC output contactor DCJ6 outputs 110V DC voltage → the first DC contactor on each set of socket boxes in another group of socket boxes (9-16) J4 pulls in, the output terminal of the first DC contactor J4 outputs 110V voltage DC → the second socket C2,

The other way outputs 110V voltage DC through the output end of the first DC output contactor DCJ8 → the first DC contactor J4 on each set of socket boxes in a group of socket boxes (1-8) pulls in, and the first DC contact The output terminal of the device J4 outputs 110V DC voltage → the second socket C2,

The second DC output switch D1K2 outputs 24V voltage direct current → the second DC input contactor DCJ3 and the second DC output contactor DCJ5 in the DC switching cabinet DC pull in, the second DC input contactor DCJ1 and the second DC output contactor DCJ7 disconnected, the output of the second DC input contactor DCJ3 is divided into two paths,

One way is input to the second DC output contactor DCJ5, and the output terminal of the second DC output contactor DCJ5 outputs 24V DC voltage → the second DC contactor J3 on each set of socket boxes in the other set of socket boxes (9-16) pulls in , the output terminal of the second DC contactor J3 outputs 24V DC voltage → the third socket C3,

The other way outputs 24V voltage direct current through the output end of the second DC output contactor DCJ7 → the second DC contactor J3 on each set of socket boxes in a group of socket boxes (1-8) pulls in, and the second DC contactor J3 The output end outputs 24V DC voltage → the third socket C3.

As a management system, the controller of the utility model is powered by the three-phase line 380V AC voltage output by the power switch K5 of the incoming cabinet, receives the data of all equipment electric parameters, and controls the pull-in and disconnection of all contactors at the same time. The controller is equipped with a communication interface connected to the EMU information management system, and the information content and format conform to the relevant provisions of the Ministry of Railways' "Railway EMU Depot (Station) Information System Design Specification" and "EMU Management Information System Automation Equipment Interface Specification" , to realize the centralized management of the multi-channel intelligent maintenance auxiliary power supply system, monitor and record the operation and safety parameters such as power supply time, power outage time, voltage, current, etc. The data recorded by the controller can be queried and dumped, and can be used as an on-site The original basis for job control and failure analysis.

The detailed list of equipment of the present utility model is as follows:

The utility model is suitable for ground auxiliary power supply for EMUs for primary and secondary inspections, maintenance, maintenance, debugging, etc., while taking into account CRH1, CRH2, CRH3, CRH4, CRH5 vehicles, especially according to the Harmony CRH6 type intercity EMUs The power supply requirements of the auxiliary power supply are designed to fully meet the power supply indicators of CRH6, and meet the power supply requirements of long and short marshalling.

The power supply requirements for the auxiliary power supply of Harmony CRH6 intercity EMU are as follows:

The utility model is also equipped with overvoltage, undervoltage, overcurrent, short circuit, voltage harmonic content exceeding the standard, leakage and grounding protection measures;

The first socket C1, the second socket C2 and the third socket C3 in the socket box are installed perpendicular to the ground, and are provided with a sealing structure, which has the functions of dustproof and rainproof;

The protection level of the indoor equipment of the system is not lower than IP43, the protection level of the outlet of the outfield socket box is not lower than IP11, and the protection level of other parts is not lower than IP43;

The outfield socket box is installed at the corresponding position of the external power socket of the EMU, which does not affect other inspection and maintenance operations.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present utility model shall be included in the Within the protection scope of the present utility model.

Claims (10)

1. A multi-channel intelligent maintenance auxiliary power supply system for EMUs, characterized in that it includes an incoming line cabinet, a controller, at least two AC cabinets, an AC switching cabinet AC, at least two DC cabinets, a DC switching cabinet DC and at least Two sets of outlet boxes; The input end of the incoming line cabinet is connected to the industrial power supply port, and the output end includes a plurality of power switches and an output switch, and the output ends of the multiple power switches are respectively connected to the power supplies of the controller, the AC cabinet, and the DC cabinet. The input ends are connected in one-to-one correspondence, and the output ends of the output switch are electrically connected to the input ends of the AC direct contactors J2 on all socket boxes; The numbers of the AC cabinets and the DC cabinets are in one-to-one correspondence with the numbers of the outlet boxes; Each of the AC cabinets includes an AC output switch; The AC switching cabinet includes multiple AC input contactors and multiple AC output contactors; The input ends of the plurality of AC input contactors correspond to and are connected to the output ends of all the AC output switches of the AC cabinets one by one, and the plurality of AC output contactors are connected to the plurality of AC input contactors one by one. Correspondingly, the output ends of the plurality of AC output contactors are connected to the output ends of the plurality of AC input contactors in one-to-one correspondence, and the input ends of the plurality of AC output contactors are connected to any non-corresponding AC input contactors The output terminal connection; The output end of each said AC output contactor is electrically connected to the input end of the AC contactor J1 on each set of outlet boxes in a corresponding group of outlet boxes; Each of the DC cabinets includes a set of DC output switch groups; The DC switching cabinet includes multiple sets of DC input contactors and multiple sets of DC output contactors; The input ends of the multiple sets of DC input contactors are in one-to-one correspondence with the output ends of all the DC output switch groups of the DC cabinets, and the multiple sets of DC output contactors are connected to the multiple sets of DC input contactors. One-to-one correspondence, the output ends of the multiple sets of DC output contactors correspond to and are connected correspondingly to the output ends of the multiple sets of DC input contactors, and the input ends of the multiple sets of DC output contactors are not corresponding to any set of The output end of the DC input contactor is connected correspondingly; The output ends of each group of said DC output contactors are electrically connected to the input ends of the DC contactor groups on each set of socket boxes in the corresponding group of socket boxes; The AC cabinet, the AC switching cabinet, the DC cabinet, the DC switching cabinet, and the outlet box are all connected to the controller signal. 2. The EMU multi-channel intelligent maintenance auxiliary power supply system according to claim 1, characterized in that: there are two groups of socket boxes, and the number of socket boxes in each group of socket boxes is 8 sets. 3. The EMU multi-channel intelligent maintenance auxiliary power supply system according to claim 2, characterized in that: there are two AC cabinets, namely AC cabinet A1 and AC cabinet A2, and the AC cabinet in the AC cabinet A1 The output switch is an AC output switch A1K, and the AC output switch in the AC cabinet A2 is an AC output switch A2K. 4. The EMU multi-channel intelligent maintenance auxiliary power supply system according to claim 3, characterized in that: said AC switching cabinet includes AC input contactor ACJ1, AC input contactor ACJ2, AC output contactor ACJ3 and AC output Contactor ACJ4, the input end of AC input contactor ACJ1 is electrically connected to the output end of AC output switch A1K, the input end of AC input contactor ACJ2 is electrically connected to the output end of AC output switch A2K, and the output end of AC input contactor ACJ1 It is electrically connected to the output end of AC output contactor ACJ3, the output end of AC input contactor ACJ2 is electrically connected to the output end of AC output contactor ACJ4, and the input end of AC output contactor ACJ3 is electrically connected to the output end of AC input contactor ACJ2. The input end of the AC output contactor ACJ4 is electrically connected to the output end of the AC input contactor ACJ1. 5. The EMU multi-channel intelligent maintenance auxiliary power supply system according to claim 2, characterized in that: there are two DC cabinets, namely DC cabinet D1 and DC cabinet D2. 6. The EMU multi-channel intelligent maintenance auxiliary power supply system according to claim 5, characterized in that: the DC output switch group in the DC cabinet D1 includes a first DC output switch D1K1 and a second DC output switch D1K2 , the DC output switch group in the DC cabinet D2 includes a first DC output switch D2K1 and a second DC output switch D2K2. 7. The EMU multi-channel intelligent maintenance auxiliary power supply system according to claim 6, characterized in that: the DC switching cabinet includes two sets of DC input contactors and two sets of DC output contactors, one set of DC input contactors Including the first DC input contactor DCJ4 and the second DC input contactor DCJ3, and another set of DC input contactors includes the first DC input contactor DCJ2 and the second DC input contactor DCJ1; A set of DC output contactors includes a first DC output contactor DCJ8 and a second DC output contactor DCJ7, and another set of DC output contactors includes a first DC output contactor DCJ6 and a second DC output contactor DCJ5; The input terminal of the first DC input contactor DCJ4 is electrically connected to the output terminal of the first DC output switch D1K1, and the input terminal of the second DC input contactor DCJ3 is electrically connected to the output terminal of the second DC output switch D1K2; The input end of the first DC input contactor DCJ2 is electrically connected to the output end of the first DC output switch D2K1, and the input end of the second DC input contactor DCJ1 is electrically connected to the output end of the second DC output switch D2K2; The output end of the first DC input contactor DCJ4 is electrically connected to the output end of the first DC output contactor DCJ8, and the output end of the second DC input contactor DCJ3 is electrically connected to the output end of the second DC output contactor DCJ7; The output end of the first DC input contactor DCJ2 is electrically connected to the output end of the first DC output contactor DCJ6, and the output end of the second DC input contactor DCJ1 is electrically connected to the output end of the second DC output contactor DCJ5; The input end of the first DC output contactor DCJ8 is electrically connected to the output end of the first DC input contactor DCJ2, and the input end of the second DC output contactor DCJ7 is electrically connected to the output end of the second DC input contactor DCJ1; The input end of the first DC output contactor DCJ6 is electrically connected to the output end of the first DC input contactor DCJ4, and the input end of the second DC output contactor DCJ5 is electrically connected to the output end of the second DC input contactor DCJ3. 8. The EMU multi-channel intelligent maintenance auxiliary power supply system according to claim 7, characterized in that: the DC contactor group includes a first DC contactor J4 and a second DC contactor J3, a set of DC output The output terminals of the first DC output contactor DCJ8 and the second DC output contactor DCJ7 in the contactor are respectively connected with the first DC contactor J4 and the second DC contactor J3 on each set of socket boxes in a group of socket boxes The input terminals of the other set of DC output contactors are electrically connected, and the output terminals of the first DC output contactor DCJ6 and the second DC output contactor DCJ5 in the other set of DC output contactors are respectively connected to the first output terminals of each set of outlet boxes in the other set of outlet boxes. The DC contactor J4 is electrically connected to the input end of the second DC contactor J3. 9. The EMU multi-channel intelligent maintenance auxiliary power supply system according to claim 1, characterized in that: the socket box is provided with an AC direct contactor J2, an AC contactor J1, and a first DC contactor J4 , the second DC contactor J3, the first socket C1, the second socket C2 and the third socket C3, the output ends of the AC direct contactor J2 and the AC contactor J1 are electrically connected to the input end of the first socket C1 , the output end of the first DC contactor J4 is electrically connected to the input end of the second socket C2, and the output end of the second DC contactor J3 is electrically connected to the input end of the third socket C3. 10. The EMU multi-channel intelligent maintenance auxiliary power supply system according to claim 1, characterized in that: the output end of the incoming line cabinet includes a power switch K1, a power switch K2, a power switch K3, a power switch switch K4, power switch K5 and output switch K6, the output end of the power switch K1 is electrically connected to the power input end of the AC cabinet A1, the output end of the power switch K2 is connected to the power input end of the AC cabinet A2 The power input end is electrically connected, the power switch K3 is electrically connected to the power input end of the DC cabinet D1, the power switch K4 is electrically connected to the power input end of the DC cabinet D2, and the power switch K5 It is electrically connected with the power input end of the controller, and the output switch K6 is electrically connected with the input ends of the AC direct contactors J2 on all socket boxes.