CN110504637A - High-voltage remote power supply equipment with active security function and interlock protection method - Google Patents

Abstract

The invention discloses a high-voltage remote power supply device with an active security function and an interlocking protection method, comprising: multiple sets of power converters; electronic loads electrically connected to the power converters through a backboard; cooperating with the power converters The high-voltage output section of the cable terminal box; the power distribution box; the cabinet, the bottom of which is provided with a bottom empty box; the power distribution box is configured to include multiple power outputs, and each power output passes through the circuit breaker to achieve the output state switching; each power supply output is divided into main circuit breaker group and auxiliary circuit breaker according to the current size of the connected equipment; the main circuit breaker is provided with a first mechanical lock; The crank is connected with a slide plate. The invention provides a high-voltage remote power supply device with an active security function, which can change passive protection into active protection through the structural design of a power distribution box, so as to have higher safety performance.

Description

High-voltage remote power supply equipment with active security function and interlock protection method

technical field

The invention relates to the field of high-voltage power supply. More specifically, the present invention relates to a high-voltage remote power supply device with an active security function and an interlock protection method.

Background technique

High-voltage remote power supply equipment refers to input low-voltage DC (such as ±48V) or AC (such as ~220V or ~380V) after power conversion, output DC voltage of thousands of volts or tens of thousands of volts, and output power of thousands of watts or tens of thousands of watts. Voltage or constant current remote power supply system. However, because the DC voltage output by the high-voltage remote power supply is very high, it has great safety hazards. Therefore, it is strictly forbidden for maintenance personnel to operate with power on during equipment maintenance, so as to avoid electric shock accidents and affect the life and health of operators.

However, when the existing high-voltage remote power supply equipment is overhauled, its safety protection depends on the safety protection awareness of the operator, and it is impossible to realize active protection to ensure the safety of the operator. In the prior art, the high-voltage power supply is usually realized through a circuit breaker The components of the power supply equipment are cut off to achieve safety protection, but the working status of each handle in the circuit breaker cannot be controlled, and then when misoperation occurs on site, electric shock accidents will occur, causing casualties. In order to prevent this phenomenon from happening , which requires later research to make the high-voltage remote power supply equipment have safety protection devices to endow the high-voltage remote power supply equipment with active safety protection functions during maintenance.

Contents of the invention

An object of the present invention is to solve at least the above problems and/or disadvantages and to provide at least the advantages as will be described hereinafter.

Another object of the present invention is to provide a high-voltage remote power supply device with active security function, which can make the first mechanical lock through the structural design of the power distribution box and the structural design of the first mechanical lock and the slide plate. After the key is pulled out, the lock cylinder of the first mechanical lock cannot be rotated, causing the slide plate to no longer slide upwards, so that the handle of the circuit breaker cannot be pulled up, and the interlocking crank slide mechanism ensures that the maintenance equipment must be powered off. The main circuit breaker of the electrical box is changed from passive protection to active protection to have higher safety performance.

In order to achieve these objects and other advantages according to the present invention, a high-voltage remote power supply device with an active security function is provided, including:

Multiple sets of power converters for converting low-voltage DC or AC into thousands of volts or tens of thousands of volts of DC high-voltage output;

Through the backplane and then electrically connected to the power converter to detect the electronic load of the high-voltage output of the device;

Cooperate with the power converter to realize the high-voltage output section that supplies power to the cable;

The cable terminal box used to connect the positive and negative poles of the cable, the cable protection ground and the site ground;

Power distribution box for electronic load, power converter, local control unit, DCD I/O component box;

The cabinet used for encapsulating equipment components has a bottom empty box that connects the high-voltage output section and the cable terminal box, and can completely disconnect the cable and the high-voltage output after being pulled out;

Wherein, the power distribution box is configured to include at least one group of input power sources, each group of input power sources is configured to adopt multiple power outputs, and each power output can switch the output state through a matched circuit breaker;

The output of each power supply is divided into main breaker group and auxiliary circuit breaker according to the current size of the connected equipment;

The main circuit breaker is provided with a matching packaging panel, and the packaging panel is provided with a first mechanical lock;

A slide plate is connected to the bottom of the rotating rod of the first mechanical lock through a pivoted crank, and a chute for the slide plate to slide up and down is arranged on the packaging panel, so that when the first mechanical lock rotates, the slide plate moves up and down. , to interfere with the working state of the main circuit breaker.

Preferably, each of the power converters controls the output direction through a matched dual-channel high-voltage vacuum relay, supplies power to the electronic load upward, and supplies power to the cable downward through the high-voltage output section;

The panels of the power converters and electronic loads are respectively provided with first switches for switching the on-off states of their power supplies.

Preferably, wherein, the cabinet includes a rack and side panels that are detachably arranged on each side of the rack;

The electronic load, the power converter, the local control unit, the high-voltage output section, and the empty box at the bottom are respectively arranged on the front of the rack through the matching first slide rails;

The cable terminal box is arranged on the back of the rack through the second slide rail, and the back of the rack is also provided with a high-voltage junction box, a power distribution box, a DCD I/O component box, a power supply Input/high voltage output junction box;

Each component on the frame is detachably connected to the frame through matching mounting screws, and the frame is provided with a DCD I/O component box at a position matched with the mounting screws of each component, A second switch for monitoring the state and position of the mounting screws;

The mounting screws on the panels corresponding to the power converter and the electronic load are also provided with a third switch for monitoring their position and state;

The DCD I/O component box is communicatively connected to a local control unit, and the local control unit is respectively communicatively connected to the high-voltage switch tube and the high-voltage vacuum relay of each power converter.

Preferably, wherein, the high-voltage output section is configured to include:

It is used to connect multiple sets of high voltage output of power converters to form a set of high voltage output, and perform polarity conversion, rectification and filtering, and measurement of the high voltage output;

It is used to connect the output high voltage to the cable, convert the cable protection ground to the station ground, and measure the cable voltage;

Wherein, the above paragraph is configured to include:

The first box is provided with a polarity switch for polarity conversion of the output high voltage;

A hinge flip cover for encapsulating the installation position of the polarity switch, a measurement board is provided on the side of the inner wall of the hinge flip cover staggered from the polarity switch, and a fourth switch for monitoring the opening state of the hinge flip cover;

Secondary mechanical lock on hinged flap.

Preferably, wherein, the lower paragraph is configured to include:

The second box, the switch drawer box and the test drawer box are installed on the base through the fourth slide rail;

A bracket arranged inside the second box body and corresponding to the switch drawer box and the test drawer box;

Installed on the bracket and matched with the first spring short circuit at the rear end of the test drawer;

Wherein, the switch drawer box and the test drawer box are respectively provided with a first six-pin high-voltage plug and a second six-pin high-voltage plug on one end matched with the bracket, and the bracket is respectively provided with a first six-pin high-voltage plug. , The six-core high-voltage socket matched with the second six-core plug;

The six inner conductors in the first six-core plug are connected in pairs through the first high-voltage cable, forming a set of high-voltage +, a set of high-voltage-, and a set of second conductors that can detect the position status of the switch drawer box through DCD I/O. five switches;

The two inner conductors in the second six-pin plug are respectively connected to the two high-voltage sockets on the high-voltage connection seat through the second high-voltage cable, and the other two inner conductors are interconnected through the third high-voltage cable, forming a structure that can pass through the DCD I /O detects the sixth switch that tests the position status of the drawer box;

The first spring short circuit is in contact with the test drawer box through the first push rod, so that when the resistance of the test drawer box is pulled out of the first push rod, all electrodes of the first spring short circuit contact with the metal reed after the spring is released. and short circuit; and when the test drawer box is pushed into the first ejector rod and jacked up, the electrodes of the first spring short circuit are all separated from the metal reed and the short circuit is ended;

The first front plate on the switch drawer box has an extended stopper at one end in contact with the second front plate on the test drawer box, and the second front plate is provided with an extended stopper at a position matched with the stopper. The latching part of the box is used to make the two form a blocking structure in space. The switch drawer box and the test drawer box are respectively fixed by the third mechanical lock and the first compression handle arranged on the second box body.

Preferably, wherein, the bottom empty box, the high-voltage output section, and the cable terminal box respectively realize the blind-mating connection conduction of the three through the matched first rectangular connector and the second rectangular connector;

The high-voltage plugs and power signal sockets on the electronic load and the power converter pass through the matching high-voltage sockets and power signal plugs on the backboard respectively, so as to realize the live blind insertion of the electronic load and the power converter. There is a movable hinged door above the matching installation position of the power converter and power load;

Wherein, the first rectangular connector is configured to include a socket mounting seat provided at the high-voltage output end, and a plug mounting seat provided on the bottom empty box;

The bottom empty box is provided with a mounting groove matching with the plug mounting seat, so that the connection between the bottom empty box and the high-voltage output section forms a blocking structure in space;

The hinged door is configured to include: a mounting frame matched with the frame, a rotating shaft disposed on the mounting frame, and a door body disposed on the rotating shaft;

A rotary switch communicatively connected with the DCD I/O component box is arranged on the rotating shaft.

Preferably, wherein, the cable terminal box is configured to include:

The third box body is provided with a door body on one side and a current detection component on the other side;

The second spring circuit breaker is respectively arranged in the third box through the installation frame and corresponds to the position of the door body and the bottom empty box;

Wherein, the door body is further fixed on the third box body through the matched second compression handle;

The second spring short-circuiter contacts the door body and the bottom empty box respectively through the matching second ejector rod, so that the cables + and cables on the spring short-circuiter -, the cable protection ground and the site ground are all short-circuited to achieve ground protection.

Preferably, among them, it also includes three sets of mechanical locks of different types: set 1, set 2, and set 3;

Wherein, the set one is configured to include: three mechanical locks respectively arranged on the packaging panel of the power distribution box, the lower part of the high-voltage output section, and the first mechanical lock, the third mechanical lock, and the fourth mechanical lock in the test drawer box;

The second set is configured to include: three hinged flip covers respectively arranged on the upper section of the output section, the second mechanical lock, the fifth mechanical lock, and the sixth mechanical lock in the cabinet rear door and the switch drawer box at the lower section of the output section;

said set three is configured to include a seventh mechanical lock located in the test drawer box in the lower section of the output section;

The set 1, set 2, and set 3 are respectively unlocked by the matching first key, second key, and third key. When the device is in operation, the first key is configured on the third mechanical lock, and the second key is configured on the third mechanical lock. The second key is arranged in the switch drawer box of the lower part of the output section, and the third key is placed in a predetermined position.

A method for interlock protection using high-voltage remote power supply equipment. When the high-voltage remote power supply equipment is overhauled, the interlock protection method is configured to include:

S10, all the handles on the main circuit breaker on the power distribution box are configured to be turned down and turned off. Turn the first key in the first mechanical lock on the package panel to drive the crank to expand and contract up and down through the rotation of the lock cylinder. Further drive the sliding plate to move downward, and then at the locked position of the first mechanical lock, the sliding plate just blocks the handles of the main circuit breaker, so that the handles of the main circuit breaker are in a locked state under the action of the sliding plate and cannot be pulled upward. ;

S11, pull out the first key on the first mechanical lock, use the first key to unlock the third mechanical lock on the lower part of the high-voltage output section, cooperate with the first compression handle to pull out the switch drawer box and the test drawer box, And after the two are pulled out in place, the corresponding first six-core high-voltage plug and the second six-core high-voltage plug are disconnected from the six-core high-voltage socket on the bracket, and the first one on the third mechanical lock is rotated. The key locks the switch drawer, thereby keeping the unit in service.

Preferably, wherein, the interlock protection method used for cable high-voltage testing is configured to include:

S20, pull out the first key on the third mechanical lock in the lower section of the high-voltage output section to unlock the fourth mechanical lock on the high-voltage connector seat in the test drawer box, and then turn the lock on the fourth mechanical lock to make the high-voltage connection The device seat is separated from the switch drawer box;

S20, get the third lock key from the predetermined position to unlock the seventh mechanical lock in the test drawer box, so that the high-voltage connector seat slides to the far right of the test drawer box under the action of the pressure spring, so that the high-voltage connector The socket hole on the seat is aligned with the test hole on the test drawer panel;

S21, advance and use the first compression handle to close the test drawer box for cable high-voltage test, and pull the first compression handle after the test, so that the test drawer box will slide out under the action of the spring short-circuiter upper rod, and the spring short-circuiter is under short-circuit protection state, re-lock the fourth mechanical lock and the seventh mechanical lock, so that the equipment is in the maintenance state again;

When opening the cabinet rear door and the hinged flap of the upper section of the output section for other operations, its interlocking protection method is configured to include:

S30, when the equipment is in the maintenance state, take out the second key in the switch drawer box, turn the second key to make the sixth mechanical lock in the locked state, and pull out the second key so that the switch drawer box cannot be pushed back;

S31, using the second key to unlock the second mechanical lock on the hinged cover to perform related operations on the polarity switch, or unlock the fifth mechanical lock on the rear door to perform other operations.

The present invention at least includes the following beneficial effects: First, the present invention enables it to convert low-voltage direct current (such as ±48V) or alternating current (such as ~220V or ~380V) into thousands of volts by arranging the components of the high-voltage remote power supply equipment Or tens of thousands of volts of DC high-voltage output, supplying power to the electronic load upwards, and supplying power to the cable through the output section downwards, so as to realize the need of remote power supply.

Its two, the present invention through the structural design of power distribution box, through the structural design of first mechanical lock and slide plate, after the key in the first mechanical lock is pulled out, the lock cylinder of the first mechanical lock then can not rotate, causes slide plate Can no longer slide upwards, so that the handle of the circuit breaker is stuck and cannot be pulled up, so that the interlocking crank slide mechanism ensures that the maintenance equipment must turn off the main circuit breaker of the power distribution box, changing passive protection into active protection, so as to have higher safety performance.

Third, the present invention actively monitors the position information of the equipment by setting the corresponding state monitoring switches on the mounting screws of the components of the cabinet, the mounting screws of the electronic load, and the power converter panel respectively, so as to prevent the position information of the equipment from being scheduled. When it is in the position, switch the working state of its components so that it can realize active safety protection.

Fourth, the present invention sets corresponding spring circuit breakers respectively on the lower part of the high-voltage output section and the cable terminal box, so that when the position of the equipment components is changed, the connection state and the grounding state are transformed to ensure that they are in a safe working state. Under the environment, realize the function of active protection.

Fifth, the present invention cooperates with the corresponding components through the structural design of multiple sets of locks on the components, so that there is a certain interference between the work processes between the structures, and then realizes the interlock protection between the equipment, and changes the original non-functional The protection function is interlocking active protection, which has a better safety factor,

In a word, the present invention is achieved through various state monitoring switches, interlocks and spring shorts, DCD I/O component boxes, local control units, and power loads, power converter backplane blind insertion, and the shelter of movable hinged doors. Working together, the high-voltage remote power supply equipment is endowed with a set of simple and reliable safety protection devices, thereby ensuring the active safety of the high-voltage remote power supply equipment during operation and maintenance, and preventing the occurrence of electric shock hazards.

Other advantages, objectives and features of the present invention will partly be embodied through the following descriptions, and partly will be understood by those skilled in the art through the study and practice of the present invention.

Description of drawings

FIG. 1 is a schematic diagram of the front structure of a high-voltage remote power supply device with an active security function in an embodiment of the present invention;

Fig. 2 is a schematic diagram of the rear structure of a high-voltage remote power supply device with an active security function in an embodiment of the present invention;

Fig. 3 is a schematic diagram of the structure of the high-voltage remote power supply device with active security function in an embodiment of the present invention without the back door of the cabinet;

Fig. 4 is a schematic structural diagram of a power distribution box in an embodiment of the present invention;

Fig. 5 is a perspective structural schematic diagram of the cooperation between the packaging panel and the first mechanical lock in Fig. 4;

FIG. 6 is a schematic structural diagram of a power converter in an embodiment of the present invention;

Fig. 7 is a schematic diagram of the exploded structure of the cabinet in an embodiment of the present invention;

Fig. 8 is a structural schematic diagram of a high voltage output section in an embodiment of the present invention;

Fig. 9 is a structural schematic view of the upper hinge flip cover in the high-voltage output section of an embodiment of the present invention when it is flipped down;

Fig. 10 is a schematic structural view of the middle and lower section of the high-voltage output section of an embodiment of the present invention after the cover plate is removed;

Fig. 11 is a schematic diagram of the internal structure and connection relationship of the lower section of the high-voltage output section of an embodiment of the present invention when the lower section is in operation;

Fig. 12 is a schematic diagram of the internal structure and connection relationship of the lower section of the high-voltage output section in an embodiment of the present invention when it is in an overhaul state;

Fig. 13 is a partially enlarged schematic diagram of part I in Fig. 12;

Fig. 14 is a schematic diagram of the internal structure and wiring relationship of the lower section of the high-voltage output section in the measurement state in one embodiment of the present invention;

Fig. 15 is a schematic structural view of a bottom empty box in an embodiment of the present invention;

Fig. 16 is a schematic structural diagram of the coordination relationship between the bottom empty box, the high-voltage output section and the cable terminal box in an embodiment of the present invention;

Fig. 17 is a structural schematic diagram of the movable hinged door falling after the power converter is pulled out of the cabinet in one embodiment of the present invention;

Fig. 18 is a schematic diagram of the structure when the living hinge door falls in an embodiment of the present invention;

Fig. 19 is a schematic diagram of the external structure of a cable terminal box in an embodiment of the present invention;

Fig. 20 is a schematic perspective view of the cable terminal box in an embodiment of the present invention.

Detailed ways

The present invention will be further described in detail below in conjunction with the accompanying drawings, so that those skilled in the art can implement it with reference to the description.

It should be understood that terms such as "having", "comprising" and "including" as used herein do not entail the presence or addition of one or more other elements or combinations thereof.

Figures 1-4 show an implementation form of a high-voltage remote power supply device with an active security function according to the present invention, including:

Multiple sets of power converters 1 for converting low-voltage DC or AC into thousands of volts or tens of thousands of volts of DC high-voltage output, which can be composed of multiple power converters 10, 11, 12, and the power converter is a high-voltage remote power supply The core module of the device, which converts low-voltage DC (such as ±48V) or AC (such as ~220V or ~380V) into a DC high-voltage output of thousands of volts or tens of thousands of volts. The high-voltage output of the power converter can control the output direction through a dual-channel high-voltage vacuum relay, supply power to the electronic load upward, and supply power to the cable through the output section downward;

Through the backplane and then electrically connected to the power converter to detect the electronic load 2 of the high-voltage output of the equipment, and only the qualified high-voltage output can be transmitted to the cable after testing the high-voltage output of the equipment;

Cooperate with the power converter to realize the high-voltage output section 3 supplying power to the output cable (referred to as the cable). The high-voltage output section plays the role of positive and negative polarity conversion, connection with the cable, measurement and switching during the high-voltage output process;

A cable terminal box 4 for connecting the positive and negative poles of the cable, the cable protection ground, and the site ground;

A power distribution box 5 for supplying power to the electronic load, the power converter, and the local control unit 8;

The cabinet 6 used for encapsulating equipment components is provided with a bottom empty box 7 that connects the high-voltage output section and the cable terminal box, and can completely disconnect the cable and the high-voltage output after being pulled out. Specifically, in this The high-voltage remote power supply equipment in the scheme consists of cabinets, power loads, power converters, movable hinge doors, DCD I/O component boxes, local control units, high-voltage output sections, bottom empty boxes, power distribution boxes, cable terminal boxes, high-voltage Combination box and power input/high voltage output junction box and other devices, the position and structural layout of each component on the cabinet are shown in Figure 1-3,

Wherein, the power distribution box is configured to include at least one group of input power sources, each group of input power sources is configured to adopt multiple power outputs, and each power output can switch the output state through a matched circuit breaker;

The output of each power supply is divided into the main breaker group 50 and the auxiliary circuit breaker 51 according to the current size of the connected equipment

The main circuit breaker is provided with a matching packaging panel 52. The packaging panel is provided with a first mechanical lock 53;

Below the rotating rod of the first mechanical lock, the pivoted crank 54 is provided with a slide plate 55 on the packaging panel, and a chute 56 for the slide plate to slide up and down is relatively arranged on the packaging panel. In this scheme, the power distribution box is a device that supplies power to power loads, power converters, DCD I/O component boxes, local control units and other unit equipment. It consists of one or two groups The input power is divided into multiple power outputs by design, and each group of power outputs is controlled by a circuit breaker, as shown in Figure 4. The main circuit breaker output terminal 57 in the power distribution box controls high-current equipment such as power loads and power converters, and the auxiliary circuit breaker controls low-current equipment such as DCD I/O component boxes and local control units. Usually, for equipment maintenance, the equipment must be powered off, that is, the main circuit breaker of the power distribution box must be turned off. In order to ensure that the main circuit breaker of the power distribution box is always in the closed state and prevent misoperation, a crank slider mechanism with a lock is designed for this equipment, as shown in Figure 5. Turn the first key on the first mechanical lock, and the slide plate will slide up and down.

When the main circuit breaker is opened, all the handles of the main circuit breaker are turned up, and the first key on the first mechanical lock is turned to the unlocking position, and the slide plate slides to the top. At this time, the key on the first mechanical lock cannot be pulled out from the lock. If the key cannot be pulled out, subsequent interlocking actions cannot be performed.

When the main circuit breaker is off, pull down all the handles of the main circuit breaker, turn the first key on the first mechanical lock to the locked position, and slide the slide plate down, as shown in Figure 4. At this time, the first key on the first mechanical lock can be released from the The subsequent interlocking action can only be performed after the key in the lock is pulled out. Moreover, after the key in the lock is pulled out, the lock cylinder of the first mechanical lock cannot rotate, causing the slide plate to no longer slide upwards, so that the handle of the circuit breaker is stuck and cannot be pulled up, so that the interlocking crank slide plate mechanism ensures maintenance The equipment must turn off the main circuit breaker of the power distribution box and change passive protection into active protection to have higher safety performance.

As shown in Figure 6, in another embodiment, each of the power converters realizes the control of the output direction through a matched dual-channel high-voltage vacuum relay (not shown), supplying power to the electronic load upward, and outputting power downward through the high voltage Segment-to-cable power supply;

Each power converter and the panel of the electronic load are respectively provided with a first switch (not shown) for switching the on-off state of the power supply. The power converter is the core module of the high-voltage remote power supply device. The equipment does not interrupt the high-voltage output when the power converter fails, and usually performs hot backup for the power converter, and the faulty power converter can also be replaced while it is live. For the safety of the replacement, the equipment has designed the first safety guarantee measure: an emergency switch is set on the panel of the power converter, pressing the emergency switch can shut down and stop the high-voltage output of the power converter at the end; ensure its maintenance status next to the security.

As shown in Figures 1-3 and 7, in another embodiment, the cabinet includes a rack 60 and side panels 61 detachably arranged on each side of the rack, and the cabinet is a mounting frame for high-voltage remote power supply equipment. It is also the main body of the safety protection device, which is composed of a frame welded as a whole, left and right side doors, rear doors, and top cover, of which the left and right side doors, back door, and top cover are detachable during maintenance;

The electronic load 2, the power converter 1, the local control unit 8, the high-voltage output section 3, and the bottom empty box 7 are respectively arranged on the front of the rack through the matched first slide rail 62, and the rack installation of the electronic load and the power converter Stainless steel slide rails are used, so that the electronic load (and the power converter can be easily pushed in and pulled out in the cabinet, and other devices can also perform similar operations. The local control unit has three functions:

First, the high-voltage output of the power converter is controlled by the switching signal of the DCD I/O. As long as the local control unit detects that any switch is not in the on-circuit state, it will turn off the high-voltage output of the power converter;

Second, control the reception of high voltage of the electronic load;

Third, communicate with the remote monitoring device, can transmit the status information of the local equipment to the remote control device, and can also accept the instructions issued by the remote monitoring device to control the local equipment;

The cable terminal box 4 is arranged on the back of the rack through the second slide rail 40, and the back of the rack is also provided with a high-voltage junction box 8, a power distribution box 5, and a DCD I/O through the matching third slide rail. Component box 9, power input/high voltage output junction box 90, power load, power converter, local control unit, high voltage output section, bottom empty box installed on the front of the cabinet, and power input/high voltage output junction box installed on the back of the cabinet The high-voltage output junction box and other devices can also be disassembled during maintenance, and the DCD I/O component box is a device that collects the switching values of each state monitoring switch in the high-voltage remote power supply equipment;

Each component on the frame is detachably connected to the frame through matching mounting screws (not shown), and the frame is provided with DCD I/ O the component box is connected to a second switch (not shown) that monitors the state position of the mounting screw, which is mainly used to detect that the component is detached from the rack;

The DCD I/O component box is communicatively connected to the local control unit, and the local control unit is respectively communicatively connected to the high-voltage switch tube and high-voltage vacuum relay of each power converter. In this scheme, in order to prevent live operation during equipment maintenance , these detachable parts all correspond to a second switch (tact switch) for state monitoring on the rack. When these detachable parts are removed, the state monitoring switch will be in an open circuit state (tact switch handle pops off), DCD I /O notifies the local control unit to control the power converter after getting the circuit breaker information, turns off the high-voltage switching tube of the power converter, cuts off the high-voltage output, and sends a message to the remote monitoring device that "a certain component has been disassembled and the power converter is turned off" . After installing these detachable parts, the state monitoring switch is in the on state (the handle of the light touch switch is pressed down), and the DCD I/O notifies the local control unit to release the closing of the high voltage switch tube of the power converter after getting the information of this path. At the same time, send the message "a certain component has been installed, turn on the power converter" to the remote monitoring device;

The mounting screws of the power converter and the electronic load panel correspond to a third switch (not shown) for state monitoring. As long as the mounting screws are loosened, the state monitoring switch will be in an open circuit state, and the DCD I/O will notify The local control unit turns off the high-voltage switch tube of the power converter, terminates the high-voltage output, and at the same time sends a message to the remote monitoring device that a certain power converter is turned off. Like other status monitoring switches, after the mounting screws on the panel of the power converter are fastened, the status monitoring switch is in the access state. After collecting the access information, the DCD I/O notifies the local control unit to release the high voltage switch tube of the power converter. At the same time, it sends a message to the remote monitoring device that "a certain power converter has been turned on". The electronic load adopts the same safety measures as the power converter, that is, in addition to the ground on-off control switch itself, the mounting screws on the panel are also Correspondingly, there is a third switch for status monitoring, and a living hinge door is also installed above it, but the objects controlled by these status detection switches through DCD I/O and the local control unit are different from the power converter and other detachable parts, The state detection switch of the power converter and other detachable parts controls the high-voltage switch tube of the power converter through the DCD I/O and the local control unit. The control result of the corresponding high-voltage vacuum relay is "off or on"; other structures can also use a similar third switch to monitor the status of its panel or components.

As shown in Figures 8-11, in another embodiment, the high-voltage output section is configured to include:

The upper section 310 is used to connect the high voltage output of multiple sets of power converters to form a set of high voltage output, and perform polarity conversion, rectification and filtering, and measurement of the high voltage output. The upper section of the high voltage output section is mainly responsible for the polarity conversion of the output high voltage, High voltage rectification, filtering and measurement, as shown in Figure 8;

The lower section 320 is used to connect the output high voltage with the cable, convert the cable protection ground and the site ground, and measure the cable voltage. The lower section of the high voltage output section is mainly responsible for the connection of the output high voltage and the cable, the cable protection ground and The structure of site-to-ground conversion and cable voltage measurement is shown in Figure 10, and its internal structure and connection relationship are shown in Figure 11;

Wherein, the above paragraph is configured to include:

The first box 311 is provided with a polarity switch 312 for switching the polarity of the output high voltage;

A hinge flip cover 313 for encapsulating the installation position of the polarity switch, a measuring board 314 is arranged on the side of the inner wall of the hinge flip cover staggered from the polarity switch, and a fourth switch 315 for monitoring the opening state of the hinge flip cover ;

The second mechanical lock 316 provided on the hinged cover realizes the active safety protection of the working state of the equipment through the cooperation of the fourth switch on the upper section and the fourth mechanical lock.

10-14 In another embodiment, the lower section is configured to include:

The second box body 321 is equipped with a switch drawer box 322 and a test drawer box 323 through a fourth slide rail 328 on its base;

A bracket 324 arranged inside the second box body and corresponding to the switch drawer box and the test drawer box;

Be installed on the support, and the first spring circuit breaker 325 that cooperates with the test drawer box rear end, in order to show its wiring relationship in the accompanying drawing, it is placed horizontally;

The marine polar protection assembly 326 arranged on one side of the test drawer box switches its working state through the matching polar conversion switch 326 (a), in order to switch the six-core high-voltage connector 322 (a) on the test drawer box of the switch drawer ), the second box body is provided with high voltage input + 321 (a), high voltage input - 321 (b); in order to match the six-core high voltage connector 323 (a) on the test drawer box, the The second box is provided with matching high-voltage output +321(c) and high-voltage output-321(d); in order to cooperate with the polar conversion switch, the second box is provided with a matching station ground 321( e), cable protection ground 321(f), the polar conversion switch is connected to the station ground, and is connected to the cable protection ground through the cable protection ground bus bar 321(g) to realize polar conversion, the high voltage of the switch drawer box The output is respectively connected with the high voltage output + and the high voltage output - respectively provided on the test drawer box and the second box body through the matching high voltage output-bus bar 321(h), high voltage output + bus bar 321(i), and the The connection of the respective ports can be realized by high voltage cables;

Wherein, the switch drawer box and the test drawer box are respectively provided with a first six-core high-voltage plug 322 (b) and a second six-core high-voltage plug 323 (b) on one end matched with the bracket, and the brackets are respectively provided with There are six-pin high-voltage sockets 322(c), 323(c) matched with the first six-pin high-voltage plug and the second six-pin plug;

The six inner conductors in the first six-core plug are connected in pairs through the first high-voltage cable, forming a set of high-voltage +, a set of high-voltage-, and a set of second conductors that can detect the position status of the switch drawer box through DCD I/O. five switches;

The two inner conductors in the second six-pin plug are respectively connected to the two high-voltage sockets on the high-voltage connection seat through the second high-voltage cable, and the other two inner conductors are interconnected through the third high-voltage cable, forming a structure that can pass through the DCD I /O detects a sixth switch (not shown) that tests the position status of the drawer;

The first spring short circuit is in contact with the test drawer box through the first push rod 327, so that when the test drawer box is pulled out of the first push rod resistance and the resistance is eliminated, all the electrodes of the first spring short circuit device are all in contact with the metal reeds after the spring is released. (not shown) contact and short circuit; And when the test drawer box is pushed into the first push rod and jacked up, the electrodes that drive the first spring short circuit are all disengaged from the metal reed and just end the short circuit;

The first front plate on the switch drawer box has an extended stop portion 322(d) at the end in contact with the second front plate on the test drawer box, and the second front plate is at a position matched with the stop portion An extended locking part 323(d) is provided on the top, so that the two form a blocking structure in space, and the switch drawer box and the test drawer box pass through the third mechanical lock 321 ( j), the first compression handle 321(k) is further fixed. In this solution, the core of the lower section of the high-voltage output section is two drawer boxes, that is, the switch drawer box and the test drawer box. The two drawer boxes are installed on the base through linear slide rails, and 6-core high-voltage plugs are installed at the rear of the two drawer boxes, and the 6 inner conductors of the 6-core high-voltage plugs of the switch drawer box are connected in pairs by high-voltage cables to form a three-core One group is high voltage +, one group is high voltage -, and one group is switch, which can make the DCD I/O detect the state of the switch drawer box; the two inner conductors in the 6-core high-voltage plug of the test drawer box are respectively connected to the high-voltage cable through the high-voltage cable The two high-voltage sockets on the high-voltage connection seat are connected, and then two inner conductors are interconnected by a high-voltage cable to form a switch, which allows the DCD I/O to detect and test the state of the drawer box. The 6-core high-voltage plugs at the rear of the two drawer boxes correspond to the 6-core high-voltage sockets on the bracket respectively, and they can be fitted with tolerance floating. The rear of the test drawer also corresponds to a spring short-circuiter ejector rod mounted on the bracket. The test drawer is pulled out, the resistance of the ejector rod is eliminated, and the spring is released, and all the electrodes of the spring short circuit are in contact with a metal reed to short circuit; the test drawer is pushed in, the ejector rod is lifted, and all the electrodes of the spring short circuit are connected to each other. The metal reed breaks away to end the short circuit. The panels of the switch drawer box and the test drawer box adopt a blocking design, that is, the panel of the switch drawer box is outside, and the panel of the test drawer box is inside, as shown in the partially enlarged I view in Figure 13. When the two drawer boxes are all pushed in, the second mechanical lock on the lower panel of the output section is locked, that is, the switch drawer box is locked, and the test drawer box is also locked at the same time; when the second mechanical lock on the lower panel of the output section is unlocked, Pull the first compression handle on the panel of the test drawer, and the switch drawer can be pulled out at the same time.

The three states of the switch drawer box and the test drawer box in the lower section of the high-voltage output section represent the three states of the high-voltage remote power supply equipment, as well as operation, maintenance, and measurement.

(1) Operation: As shown in Figure 10-11, the switch drawer box and the test drawer box are both in the closed state. At this time, the 6-pin high-voltage connector plug and socket are connected, the high-voltage input and high-voltage output are connected, and the equipment is in the running state.

(2) Overhaul: As shown in Figure 12, the switch drawer box and the test drawer box are all pulled out. At this time, the high-voltage plug and socket corresponding to the drawer box are disconnected, and the high-voltage input and output are disconnected accordingly; at the same time, the spring circuit breaker spring is released. , The high-voltage output + (cable +) and high-voltage output- (cable-) on the short circuit are connected to the cable protection ground and the electrode connected to the site ground and the metal reed is in contact with the metal reed to short circuit, which plays the role of grounding protection.

(3) Measurement: As shown in Figure 14, the switch drawer box is opened and the test drawer box is closed. At this time, the corresponding 6-core high-voltage plug and socket of the switch drawer box are disconnected, and the high-voltage input and output are disconnected from each other; but the test drawer The 6-core high-voltage plug and socket corresponding to the box are connected, and the ejector rod of the spring short circuit is lifted by the test drawer box. The metal reed is disengaged to end the short circuit, and after unlocking the fourth and seventh mechanical locks in the test drawer box, we can measure the voltage of the cable through the two high-voltage sockets of the test drawer box.

As shown in Fig. 7, 15-18, in another embodiment, the bottom empty box and the high-voltage output section and the cable terminal box respectively pass through the matched first rectangular connector 70 and the second rectangular connector (not shown). ) to realize the conduction of the blind plug connection of the three;

The electronic load, the high-voltage plug (not shown) and the power signal socket (not shown) on the power converter pass through the matched high-voltage socket 64 and power signal plug 65 on the backplane 63 respectively, and then realize the electronic load, For the live blind insertion of the power converter, for safety, the connection between the electronic load and the power converter and the cabinet adopts the backplane connection method, that is, the high-voltage plug and the power signal socket of the electronic load and the power converter are connected with the high-voltage socket and the high-voltage socket on the backplane The power signal plugs can be charged blindly with each other, so that when the electronic load and power converter are pulled out of the cabinet, there will be no high-voltage connection between the tail and the cabinet, and the risk of electric shock caused by manual plugging and unplugging of high-voltage connectors will be eliminated. The cabinet is provided with a movable hinged door 66 above the installation position matched with the power converter and the power load. After the electronic load and the power converter (CV) are pulled out from the cabinet, an empty window is left on the cabinet. To prevent the maintenance personnel from accidentally reaching into the empty window and touching the high-voltage socket, so after the electronic load and power converter are pulled out from the cabinet, the plastic door of the movable hinge door installed above the electronic load and power converter will automatically fall down, Prevent staff from reaching into the cabinet;

Wherein, the first rectangular connector is configured to include a socket mount (not shown) disposed on the high voltage output end, and a plug mount 71 disposed on the bottom empty box;

The bottom empty box is provided with a mounting groove 72 that matches the plug mounting seat, so that the connection between the bottom empty box and the high-voltage output section forms a blocking structure in space; as shown in Figure 15, the bottom empty box is connected A device for the high-voltage output section and the cable terminal is equivalent to a high-voltage isolation switch on the high-voltage remote power supply equipment. The bottom empty box is pulled out from the cabinet to completely disconnect the cable and high-voltage output. In order to facilitate the pulling out of the bottom empty boxes from the cabinet, they are connected with each other by blind insertion of rectangular high-voltage connectors. From the perspective of maintenance safety, since the bottom empty box is a high-voltage isolation switch, it should be pulled out from the cabinet. In order to reflect this priority, the connection between the bottom empty box and the high-voltage output section also adopts a blocking design. , that is, the plug mounting seat of the bottom empty box can block the socket mounting seat of the lower part of the high-voltage output section. Coordination relationship with the cable terminal box. This ensures that when the high-voltage output section is disassembled, the cable and the high-voltage output have been completely disconnected, thereby ensuring safety when the high-voltage output section is disassembled. The installation positions of the second rectangular connector and the first rectangular connector are on different side walls so that the high-voltage output section is located above the empty box at the bottom, and a connector seat 73 is provided on the rear panel of the empty box at the bottom to match with the cable terminal box, and the position of the connector seat 73 leaves the position of the installation groove , so that they interfere with each other in space, so as to facilitate active security protection;

The hinged door is configured to include: a mounting frame 66(a) matched with the frame, a rotating shaft 66(b) disposed on the mounting frame, and a door body 66(c) disposed on the rotating shaft;

A rotary switch (not shown) communicating with the DCD I/O assembly box is provided on the rotating shaft, a rotary switch is installed on the rotating shaft of the living hinge door, and the plastic door of the living hinge door rotates and falls and turns up to make the rotation The switch is in the state of open circuit and open circuit, and the DCD I/O will notify the local control unit after collecting the open circuit and open circuit information, and the local control unit will send "a certain component is removed from the cabinet" or "a certain component is installed in the cabinet" to the remote control Information.

As shown in Figures 19-20, in another embodiment, the cable termination box is configured to include:

The third box body 40 is provided with a door body 41 on one side and a current detection assembly 42 on the other side;

The second spring circuit breakers 45, 46 are respectively arranged in the third box through the mounting brackets 43, 44, and correspond to the positions of the door body and the bottom empty box;

Wherein, the door body is further fixed on the third box body through the matched second compression handle 47;

The second spring circuit breaker contacts the door body and the bottom empty box through the matched second push rods 48 and 49 respectively, so that the cables on the spring short circuit breaker will +, cable -, cable protection ground, and site ground are all short-circuited to achieve grounding protection. The cable terminal box is a device for connecting cable +, cable -, cable protection ground, and site ground. It has a set of current detection devices and two sets of Spring short circuit. The ejector pins of the two sets of spring circuit breakers correspond to the bottom empty box and the quick-repair movable door on the panel respectively (fixed by two panel compression handles), pulling out the bottom empty box and pulling out the quick-repair movable door will make the spring short-circuit device The cable +, cable -, cable protection ground, and site ground are all short-circuited to play the role of ground protection.

As shown in Figures 4, 5, 8, 9, 10, and 11, in another embodiment, it also includes three sets of mechanical locks of different types, including set one, set two, and set three. There are three sets of different types of high-voltage remote power supply equipment Mechanical locks of the same model have the same lock core and the same key, and one key can unlock multiple locks; different types of mechanical locks have different lock cores, inconsistent keys, and cannot unlock each other. The keys of all locks can only be pulled out in the locked state, and cannot be pulled out in the unlocked state;

Wherein, the set one is configured to include: three sets respectively arranged on the packaging panel of the power distribution box, the lower part of the high-voltage output section, and the first mechanical lock 53 and the third mechanical lock 321(j) in the test drawer box, fourth mechanical lock 323(d);

The second set is configured to include: three hinged covers respectively arranged on the upper section of the output section, the second mechanical lock 316 in the cabinet rear door, the switch drawer box of the lower section of the output section, the fifth mechanical lock (not shown), and the sixth mechanical lock (not shown). mechanical lock 322(e);

Said set three is configured to include a seventh mechanical lock 323(e) located in the test drawer box in the lower section of the output section;

Said sets 1, 2, and 3 are unlocked by matching first key 321(1), second key 317, and third key (not shown). When the device is in operation, the first key It is configured on the first mechanical lock, the second key is configured in the switch drawer box at the lower part of the output section, and the third key is placed in a predetermined position. In this scheme, each set of high-voltage remote power supply equipment has only three keys, of which the first key and the second key are on the equipment, and the third key can be mastered by the equipment administrator. When the equipment is running, the first key is always in the first mechanical lock of the power distribution box, and the second key is always hidden in the sixth mechanical lock in the switch drawer box at the lower part of the output section.

A method for interlock protection using high-voltage remote power supply equipment. When the high-voltage remote power supply equipment is overhauled, the interlock protection method is configured to include:

S10, all the handles on the main circuit breaker on the power distribution box are configured to be turned down and turned off. Turn the first key in the first mechanical lock on the package panel to drive the crank to expand and contract up and down through the rotation of the lock cylinder. Further drive the sliding plate to move downward, and then at the locked position of the first mechanical lock, the sliding plate just blocks the handles of the main circuit breaker, so that the handles of the main circuit breaker are in a locked state under the action of the sliding plate and cannot be pulled upward. , so as to ensure that the main circuit breaker cannot be misoperated during the maintenance process of the equipment;

S11, pull out the first key on the first mechanical lock, use the first key to unlock the third mechanical lock on the lower part of the high-voltage output section, cooperate with the first compression handle to pull out the switch drawer box and the test drawer box, And after the two are pulled out in place, the corresponding first six-core high-voltage plug and the second six-core high-voltage plug are disconnected from the six-core high-voltage socket on the bracket, and the first one on the third mechanical lock is rotated. The key locks the switch drawer, and then puts the equipment in the inspection state. The characteristics of the inspection state are:

(1) The main circuit breaker on the power distribution box of the equipment is in an open circuit state;

(2) The switch drawer box and test drawer box in the lower section of the output section are all pulled out, so that the high-voltage input and high-voltage output are automatically disconnected, and the cable + and cable- on the spring circuit breaker are all grounded and short-circuited with the cable protection ground and the station ground, so that The function of automatic grounding protection of equipment.

In another embodiment, the interlock protection method for cable high voltage testing is configured to include:

S20, pull out the first key on the third mechanical lock in the lower section of the high-voltage output section to unlock the fourth mechanical lock on the high-voltage connector seat in the test drawer box, and then turn the lock on the fourth mechanical lock to make the high-voltage connection The device seat is separated from the switch drawer box, which disengages the high-voltage connector seat and the switch drawer box through the fourth mechanical lock, and the high-voltage connector seat and the switch drawer box are connected together by the lock of the fourth mechanical lock;

S20, get the third lock key from the predetermined position to unlock the seventh mechanical lock in the test drawer box, so that the high-voltage connector seat slides to the far right of the test drawer box under the action of the pressure spring, so that the high-voltage connector The socket hole on the seat is aligned with the test hole on the test drawer panel;

S21, push forward and close the test drawer box with the first compression handle for the cable high voltage test, and pull the first compression handle after the test. The push rod on the short circuit breaker slides out, the spring short circuit breaker is in the short circuit protection state, and the fourth mechanical lock and the seventh mechanical lock are locked again, so that the equipment is in the maintenance state again;

When opening the cabinet rear door and the hinged flap of the upper section of the output section for other operations, its interlocking protection method is configured to include:

S30, when the equipment is in the maintenance state, if you want to open the hinged cover of the rear door of the cabinet and the upper section of the output section, you need to take out the second key in the switch drawer box, turn the second key to make the sixth mechanical lock in the locked state, and set the The second key is extracted so that the switch drawer box cannot be pushed back, and the second key can be extracted from the sixth mechanical lock. When the sixth mechanical lock is in the locked state, the high-voltage switch drawer box cannot be pushed back. Only the second key is returned to the sixth mechanical lock to unlock the sixth mechanical lock, and at the same time unlock the sixth mechanical lock. Open and close the drawer to push it back;

S31, use the second key to open the second mechanical lock on the hinge cover, remove the second key to open the hinge cover on the upper section of the output section, and perform related operations on the polarity switch, or open the fifth mechanical lock on the rear door to perform other operations. In this solution, before opening the rear door of the cabinet and the upper hinge cover of the output section for other operations, through the above-mentioned interlocking operation, the equipment has been put in the maintenance state, which has better protection performance.

Therefore, the present invention is mainly through the cooperation of various state monitoring switches, interlocks and spring shorts, DCD I/O component boxes, local control units, and power loads, power converter backplane blind insertion, and movable hinge door shielding. Function, endow high-voltage remote power supply equipment with a simple and reliable safety protection device, thus ensuring active safety during operation and maintenance of high-voltage remote power supply equipment, and preventing the occurrence of electric shock hazards.

The adoption of the above solution is only an illustration of a preferred example, but not limited thereto. When implementing the present invention, appropriate replacements and/or modifications can be made according to user requirements.

The number of devices and processing scales described here are used to simplify the description of the present invention. The application, modification and change of the high-voltage remote power supply device with active security function and the interlock protection method of the present invention will be obvious to those skilled in the art.

Although embodiments of the present invention have been disclosed above, it is not limited to the applications set forth in the specification and examples. It can be fully applied to various fields suitable for the present invention. Additional modifications can readily be made by those skilled in the art. Therefore, the invention should not be limited to the specific details and examples shown and described herein, without departing from the general concept defined by the claims and their equivalents.

Claims (10)

1. A high-voltage remote power supply device with an active security function, characterized in that it comprises: Multiple sets of power converters for converting low-voltage DC or AC into thousands of volts or tens of thousands of volts of DC high-voltage output; Through the backplane and then electrically connected to the power converter to detect the electronic load of the high-voltage output of the device; Cooperate with the power converter to realize the high-voltage output section that supplies power to the transmission cable; The cable terminal box used to connect the positive and negative poles of the cable, the cable protection ground and the site ground; Power distribution box for electronic load, power converter, local control unit, DCD I/O component box; The cabinet used for encapsulating equipment components has a bottom empty box that connects the high-voltage output section and the cable terminal box, and can completely disconnect the cable and the high-voltage output after being pulled out; Wherein, the power distribution box is configured to include at least one group of input power sources, each group of input power sources is configured to adopt multiple power outputs, and each power output can switch the output state through a matched circuit breaker; The output of each power supply is divided into main breaker group and auxiliary circuit breaker according to the current size of the connected equipment; The main circuit breaker is provided with a matching packaging panel, and the packaging panel is provided with a first mechanical lock; A slide plate is connected to the bottom of the rotating rod of the first mechanical lock through a pivoted crank, and a chute for the slide plate to slide up and down is arranged on the packaging panel, so that when the first mechanical lock rotates, the slide plate moves up and down. , to interfere with the working state of the main circuit breaker. 2. The high-voltage remote power supply device with active security function as claimed in claim 1, wherein each of the power converters realizes the control of the output direction through a matched two-way high-voltage vacuum relay, and upwardly controls the electronic load. Power supply, down through the high-voltage output section to supply power to the cable; The panels of the power converters and electronic loads are respectively provided with first switches for switching the on-off states of their power supplies. 3. The high-voltage remote power supply device with an active security function according to claim 1, wherein the cabinet includes a frame and side panels that are detachably arranged on each side of the frame; The electronic load, the power converter, the local control unit, the high-voltage output section, and the empty box at the bottom are respectively arranged on the front of the rack through the matching first slide rails; The cable terminal box is arranged on the back of the rack through the second slide rail, and the back of the rack is also provided with a high-voltage junction box, a power distribution box, a DCD I/O component box, a power supply Input/high voltage output junction box; Each component on the frame is detachably connected to the frame through matching mounting screws, and the frame is provided with a DCD I/O component box at a position matched with the mounting screws of each component, A second switch for monitoring the state and position of the mounting screws; The mounting screws on the panels corresponding to the power converter and the electronic load are also provided with a third switch for monitoring their position and state; The DCD I/O component box is communicatively connected to a local control unit, and the local control unit is respectively communicatively connected to the high-voltage switch tube and the high-voltage vacuum relay of each power converter. 4. The high-voltage remote power supply device with an active security function according to claim 1, wherein the high-voltage output section is configured to include: It is used to connect multiple sets of high voltage output of power converters to form a set of high voltage output, and perform polarity conversion, rectification and filtering, and measurement of the high voltage output; It is used to connect the high-voltage output with the cable, convert the cable protection ground to the site ground, and measure the cable voltage; Wherein, the above paragraph is configured to include: The first box is provided with a polarity switch for polarity conversion of the output high voltage; A hinge flip cover for encapsulating the installation position of the polarity switch, a measurement board is provided on the side of the inner wall of the hinge flip cover staggered from the polarity switch, and a fourth switch for monitoring the opening state of the hinge flip cover; Secondary mechanical lock on hinged flap. 5. The high-voltage remote power supply device with an active security function as claimed in claim 4, wherein the lower section is configured to include: The second box, the switch drawer box and the test drawer box are installed on the base through the fourth slide rail; A bracket arranged inside the second box body and corresponding to the switch drawer box and the test drawer box; Installed on the bracket and matched with the first spring short circuit at the rear end of the test drawer; Wherein, the switch drawer box and the test drawer box are respectively provided with a first six-pin high-voltage plug and a second six-pin high-voltage plug on one end matched with the bracket, and the bracket is respectively provided with a first six-pin high-voltage plug. , The six-core high-voltage socket matched with the second six-core plug; The six inner conductors in the first six-core plug are connected in pairs through the first high-voltage cable, forming a set of high-voltage +, a set of high-voltage-, and a set of second conductors that can detect the position status of the switch drawer box through DCD I/O. five switches; The two inner conductors in the second six-pin plug are respectively connected to the two high-voltage sockets on the high-voltage connection seat through the second high-voltage cable, and the other two inner conductors are interconnected through the third high-voltage cable, forming a structure that can pass through the DCD I /O detects the sixth switch that tests the position status of the drawer box; The first spring short circuit is in contact with the test drawer box through the first push rod, so that when the resistance of the test drawer box is pulled out of the first push rod, all electrodes of the first spring short circuit contact with the metal reed after the spring is released. and short circuit; and when the test drawer box is pushed into the first ejector rod and jacked up, the electrodes of the first spring short circuit are all separated from the metal reed and the short circuit is ended; The first front plate on the switch drawer box has an extended stopper at one end in contact with the second front plate on the test drawer box, and the second front plate is provided with an extended stopper at a position matched with the stopper. The latching part of the box is used to make the two form a blocking structure in space. The switch drawer box and the test drawer box are respectively fixed by the third mechanical lock and the first compression handle arranged on the second box body. 6. The high-voltage remote power supply device with active security function according to claim 1, characterized in that, the bottom empty box, the high-voltage output section, and the cable terminal box respectively pass through the matched first rectangular connector, the second The rectangular connector realizes the blind-mating connection of the three; The high-voltage plugs and power signal sockets on the electronic load and the power converter pass through the matching high-voltage sockets and power signal plugs on the backboard respectively, so as to realize the live blind insertion of the electronic load and the power converter. There is a movable hinged door above the matching installation position of the power converter and power load; Wherein, the first rectangular connector is configured to include a socket mounting seat provided at the high-voltage output end, and a plug mounting seat provided on the bottom empty box; The bottom empty box is provided with a mounting groove matching with the plug mounting seat, so that the connection between the bottom empty box and the high-voltage output section forms a blocking structure in space; The hinged door is configured to include: a mounting frame matched with the frame, a rotating shaft disposed on the mounting frame, and a door body disposed on the rotating shaft; A rotary switch communicatively connected with the DCD I/O component box is arranged on the rotating shaft. 7. The high-voltage remote power supply device with active security function according to claim 1, wherein the cable terminal box is configured to include: The third box body is provided with a door body on one side and a current detection component on the other side; The second spring circuit breaker is respectively arranged in the third box through the installation frame and corresponds to the position of the door body and the bottom empty box; Wherein, the door body is further fixed on the third box body through the matched second compression handle; The second spring short-circuiter contacts the door body and the bottom empty box respectively through the matching second ejector rod, so that the cables + and cables on the spring short-circuiter -, the cable protection ground and the site ground are all short-circuited to achieve ground protection. 8. The high-voltage remote power supply device with active security function as claimed in claim 1, further comprising three sets of mechanical locks of different types: set 1, set 2, and set 3; Wherein, the set one is configured to include: three mechanical locks respectively arranged on the packaging panel of the power distribution box, the lower part of the high-voltage output section, and the first mechanical lock, the third mechanical lock, and the fourth mechanical lock in the test drawer box; The second set is configured to include: three hinged flip covers respectively arranged on the upper section of the output section, the second mechanical lock, the fifth mechanical lock, and the sixth mechanical lock in the cabinet rear door and the switch drawer box at the lower section of the output section; said set three is configured to include a seventh mechanical lock located in the test drawer box in the lower section of the output section; The set 1, set 2, and set 3 are respectively unlocked by the matching first key, second key, and third key. When the device is in operation, the first key is configured on the third mechanical lock, and the second key is configured on the third mechanical lock. The second key is arranged in the switch drawer box of the lower part of the output section, and the third key is placed in a predetermined position. 9. A method for interlock protection using high-voltage remote power supply equipment as claimed in claim 9, characterized in that, when the high-voltage remote power supply equipment is overhauled, the interlock protection method is configured to include: S10, all the handles on the main circuit breaker on the power distribution box are configured to be turned down and turned off. Turn the first key in the first mechanical lock on the package panel to drive the crank to expand and contract up and down through the rotation of the lock cylinder. Further drive the sliding plate to move downward, and then at the locked position of the first mechanical lock, the sliding plate just blocks the handles of the main circuit breaker, so that the handles of the main circuit breaker are in a locked state under the action of the sliding plate and cannot be pulled upward. ; S11, pull out the first key on the first mechanical lock, use the first key to unlock the third mechanical lock on the lower part of the high-voltage output section, cooperate with the first compression handle to pull out the switch drawer box and the test drawer box, And after the two are pulled out in place, the corresponding first six-core high-voltage plug and the second six-core high-voltage plug are disconnected from the six-core high-voltage socket on the bracket, and the first one on the third mechanical lock is rotated. The key locks the switch drawer, thereby keeping the unit in service. 10. The method for interlocking protection of high-voltage remote power supply equipment as claimed in claim 9, wherein the interlocking protection method for cable high-voltage testing is configured to include: S20, pull out the first key on the third mechanical lock in the lower section of the high-voltage output section to unlock the fourth mechanical lock on the high-voltage connector seat in the test drawer box, and then turn the lock on the fourth mechanical lock to make the high-voltage connection The device seat is separated from the switch drawer box; S20, get the third lock key from the predetermined position to unlock the seventh mechanical lock in the test drawer box, so that the high-voltage connector seat slides to the far right of the test drawer box under the action of the pressure spring, so that the high-voltage connector The socket hole on the seat is aligned with the test hole on the test drawer panel; S21, advance and use the first compression handle to close the test drawer box for cable high-voltage test, and pull the first compression handle after the test, so that the test drawer box will slide out under the action of the spring short-circuiter upper rod, and the spring short-circuiter is under short-circuit protection state, re-lock the fourth mechanical lock and the seventh mechanical lock, so that the equipment is in the maintenance state again; When opening the cabinet rear door and the hinged flap of the upper section of the output section for other operations, its interlocking protection method is configured to include: S30, when the equipment is in the maintenance state, take out the second key in the switch drawer box, turn the second key to make the sixth mechanical lock in the locked state, and pull out the second key so that the switch drawer box cannot be pushed back; S31, using the second key to unlock the second mechanical lock on the hinged cover to perform related operations on the polarity switch, or unlock the fifth mechanical lock on the rear door to perform other operations.