CN212989531U - Analog input fault recording device based on front wiring - Google Patents

Abstract

The utility model discloses an analog input fault recorder based on front wiring, which comprises a cabinet body and a man-machine interaction module arranged on the cabinet body, wherein the cabinet body is provided with a front panel, a rotary hinge and a back panel; the backplate is installed at the internal portion of cabinet, just still peg graft on the backplate and install power strip, switch gage plate, analog gauge plate, collection board, data processing board and PT CT isolation unit, it is fixed with the cabinet body to take off the screw through the pine on the front panel. The utility model discloses a set up the human-computer interaction module in the front panel, and the front panel is in the same place through rotatory hinge connection with the cabinet body to the realization is when installation, wiring, debugging or human-computer interaction operation, through controlling the mode of upset front panel switch can.

Description

Analog input fault recording device based on front wiring

Technical Field

The utility model relates to an analog input trouble recorder of preceding wiring belongs to electric power system trouble range finding field.

Background

As a main part of the power system, the power transmission line is not only used for transmitting huge power, but also used as a tie line for networking operation of each large power grid, and the reliability of the operation of the power transmission line affects the power supply reliability of the whole power system; the working environment of the power transmission line is severe, the power transmission line is exposed to wind and rain, passes through mountains and fields, is the place with the most faults in the power system, and is extremely difficult to find. Therefore, the fault point can be found quickly and accurately after the line has a fault, and the method not only has very important functions on timely line repair and quick power restoration, but also has very important functions on the safety, stability and economic operation of the whole power system.

According to the core concept of 'standardized design, industrialized production and assembly type construction' provided by the national power grid company, the outdoor prefabricated equipment cabin is greatly popularized to use at present, so that the actual floor area of the project can be reduced, the field installation is convenient, the field wiring is simplified, and the field maintenance is convenient. The prefabricated equipment cabin is produced, installed and transported integrally by a factory, and factory integration and factory debugging such as equipment installation, wiring, illumination, security protection, image monitoring and the like are realized. When the cabinet is used, double rows of screen cabinets are often required to be arranged in the equipment cabin, as shown in fig. 1, because the two rows of cabinets are arranged close to the side wall of the cabin, only the front door of the cabinet can be opened, and the rear door and the side door of the cabinet cannot provide an opening space. The traditional fault recording device adopts a screen combination mode of front mounting and rear wiring, so that only one row of fault recording cabinets can be arranged in a prefabricated cabin, as shown in fig. 2. Therefore, the utilization rate of the prefabricated equipment cabin of the traditional fault recording device is low, the on-site implementation scheme of the prefabricated cabin form cannot be met, and the construction cost of the transformer substation is greatly increased.

SUMMERY OF THE UTILITY MODEL

The following presents a simplified summary of embodiments of the invention in order to provide a basic understanding of some aspects of the invention. It should be understood that the following summary is not an exhaustive overview of the invention. It is not intended to identify key or critical elements of the invention or to delineate the scope of the invention. Its sole purpose is to present some concepts in a simplified form as a prelude to the more detailed description that is discussed later.

The utility model aims to solve the technical problem that compensate above-mentioned prior art's defect, provide an analog input trouble recorder of preceding wiring. The space requirement in the on-site prefabricated cabin is met, and the related operations of front installation, wiring, debugging, man-machine interaction and the like can be realized.

According to one aspect of the application, the analog input fault recording device based on the front wiring comprises a cabinet body and a human-computer interaction module arranged on the cabinet body, wherein the cabinet body is provided with a front panel, a rotary hinge and a back panel, the human-computer interaction module is arranged on the front panel, the front panel is arranged on the front side of the cabinet body, one side of the front panel is rotatably connected with the cabinet body through the rotary hinge, and the front panel can be turned left and right through the rotary hinge; the back plate is arranged in the cabinet body, a power panel, a switching gauge plate, an analog gauge plate, a collecting plate, a data processing plate and a PT/CT isolating unit are further installed on the back plate in an inserted mode, the power panel, the switching gauge plate, the analog gauge plate, the collecting plate, the data processing plate, the PT/CT isolating unit and the man-machine interaction module are connected with the back plate through connecting terminals, and the connecting terminals are regularly distributed in a wire arrangement area of the cabinet body; wherein, for the fastness of guaranteeing the front panel, still fix with the cabinet body through a plurality of screws simultaneously on the front panel. Preferably, the front panel is fixed with the cabinet body through a release screw. The utility model discloses a set up the human-computer interaction module in the front panel, and the front panel is in the same place through rotatory hinge connection with the cabinet body to the realization is when installation, wiring, debugging or human-computer interaction operation, through controlling the mode of upset front panel switch can. In addition, the use of the release screw can avoid the loss of the mounting screw on the front panel, and further ensure the stability of the front panel.

Furthermore, the PT/CT isolation unit comprises a plurality of voltage transformers (PT) and a plurality of Current Transformers (CT), and the voltage transformers and the current transformers are connected with the analog quantity board through special cables.

Furthermore, the model of the voltage transformer (PT) is TV25Y01-180V/3.53, and the model of the Current Transformer (CT) is TA25Y 41-40A/3.53.

Further, the input end of the power panel is connected with the voltage of AC/DC220V or AC/DC110V, and the output end of the power panel outputs the voltage of +24V, +12V, + 5V.

Furthermore, the switch gauge board comprises a multi-path photoelectric isolator, an anti-voltage interference circuit, a first-stage buffer, a CPLD (programmable logic device with high density, high speed and low power consumption realized by adopting programming technologies such as CMOS EPROM, EEPROM, flash memory, SRAM and the like) and a second-stage buffer; the output end of the multi-path photoelectric isolator is connected to the input end of the CPLD through the voltage interference resisting circuit and the first-stage buffer in sequence; the output end of the CPLD is connected with a backboard data bus through a second-stage buffer.

Furthermore, the first-stage buffer adopts four general buffers, the four general buffers divide the multi-path switching value signals output by the multi-path photoelectric isolator into 4 groups of eight signals, and the CPLD performs data buffering on the 2 groups of eight signals through the first-stage buffer; the second-stage buffer adopts two general buffers, and the CPLD performs data buffering on 2 groups of eight signals which are not buffered in the 4 groups of eight signals through the second-stage buffer.

Further, the multi-path optoelectronic isolator is a TLP121 device.

Further, the voltage interference resistant circuit adopts a TVS voltage interference resistant circuit with the model number P6SMB43 CA.

Furthermore, the acquisition board comprises a communication module and an FPGA chip which are electrically connected with each other, and the FPGA chip is connected with the interface of the back board.

Furthermore, the acquisition board further comprises a plurality of groups of network debugging modules, each group of network debugging module comprises a network debugging interface and a network debugging chip, and the network debugging interface is connected with the FPGA chip through the network debugging chip.

Furthermore, the acquisition board further comprises a time synchronization circuit, and the time synchronization circuit is connected with the FPGA chip.

Furthermore, the analog quantity board comprises a plurality of analog-to-digital conversion circuits, and the output ends of the plurality of analog-to-digital conversion circuits and the first-stage buffer are connected with the input end of the FPGA chip; the output end of the FPGA chip is connected with a backboard data bus through a second-stage buffer. The analog-to-digital conversion circuit is an AD7606 device.

Furthermore, the data processing board comprises a flash memory mSATA card/hard disk, four network ports, a GPIO interface and a CPU processing module, and the flash memory mSATA card/hard disk, the four network ports and the GPIO interface are electrically connected with the CPU processing module.

Further, the model of the CPU processing module is J1900, and the model of the driving chip of the GPIO interface is SN74LVC8T 24.

Compared with the prior art, the utility model discloses following profitable effect has does:

1) the utility model discloses a control the upset mode and switch to realize preceding human-computer interaction, the function of front mounting, preceding wiring can also realize that trouble record ripples device is put near the wall, and 2 rows of racks can be put to the under-deck, have increased the capacity utilization ratio in prefabricated cabin, reduce the cost of construction transformer substation.

2) The man-machine interaction module is installed at the front panel, just can accomplish the operation that each item is relevant of device in the front of the cabinet body, and the prefabricated cabin need not to design the side door for the prefabricated cabin design is simple, and the integrality is strong, has improved the reliability of the cabin body, has also saved the cost of the rain-proof design of side door simultaneously.

3) In order to avoid the loss of the mounting screws on the front panel, the front panel is fixed with the cabinet body through the release screws.

4) The utility model discloses a power strip, switch gage plate, analog gage plate, collection board, data processing board, human-computer interaction module pass through binding post with the backplate and are connected, and the distribution of wiring rule is in the winding displacement district of the cabinet body, is convenient for seek the fault point, still is favorable to reducing the volume, further increases the capacity utilization ratio in prefabricated cabin.

5) The functions of front man-machine interaction, front installation and front wiring are realized, and meanwhile, the functions of fault recording, fault analysis and the like can be carried out through the PT/CT isolation module, the analog quantity plate, the switching quantity plate, the acquisition analog quantity signal and the switching quantity signal.

6) The utility model discloses a modular design can further reduce the volume, and the maximize utilizes the space in the prefabricated cabin, increases the capacity utilization in prefabricated cabin.

7) Through the utility model discloses a design can improve advantages such as the space in the prefabricated under-deck of field operation convenience, maximize utilization, reduce cost.

Drawings

The invention may be better understood by referring to the following description in conjunction with the accompanying drawings, in which like reference numerals are used to designate like or similar parts throughout the figures thereof. The accompanying drawings, which are incorporated in and form a part of this specification, illustrate preferred embodiments of the present invention and, together with the detailed description, serve to explain the principles and advantages of the invention. In the drawings:

FIG. 1 is a schematic view of 2 rows of equipment placed in a prefabricated equipment bay;

FIG. 2 is a schematic diagram of a fault recorder cabinet in the prior art, in which 1 row of equipment is placed in a prefabricated equipment compartment;

fig. 3 is a front view of the structure of the analog input fault recorder based on the front wiring of the present invention;

FIG. 4 is a side view of FIG. 3;

FIG. 5 is an internal block diagram of the top view of FIG. 3;

fig. 6 is a block diagram of the hardware components of the analog input fault recorder based on the front wiring of the present invention;

fig. 7 is a block diagram of the collecting plate according to the present invention;

fig. 8 is a block diagram of the data processing board according to the present invention.

Fig. 9 is a block diagram of the switching gauge of the present invention;

fig. 10 is a block diagram of the analog quantity plate according to the present invention;

the parts corresponding to the reference numerals in the figures are as follows: 1. a human-computer interaction module; 2. a screw; 3. a cabinet body; 4. a wire arrangement area; 5. A back plate; 6. a release screw 7, a front panel; 8. rotating the hinge; 9. a front panel rotational position; 10. a power panel; 11. a switching gauge plate, 12 analog gauge plates, 13 and a collecting plate; 14. and a data processing board.

Detailed Description

Embodiments of the present invention will be described below with reference to the accompanying drawings. Elements and features described in one drawing or one embodiment of the invention may be combined with elements and features shown in one or more other drawings or embodiments. It should be noted that the figures and descriptions have omitted, for the sake of clarity, the representation and description of components and processes that are not relevant to the present invention and known to those of ordinary skill in the art.

In the description of the present invention, it should be noted that the terms "first", "second" and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The traditional fault recording device adopts the modes of front mounting and back wiring, therefore, the traditional fault recording device can only adopt a 1-row equipment arrangement mode as shown in figure 2 in a prefabricated equipment cabin, the prefabricated equipment cabin has low utilization rate, and the construction cost of a transformer substation is greatly increased. Based on this, the embodiment of the utility model provides an analog input trouble recording device of preceding wiring can switch through controlling the upset mode to realize preceding human-computer interaction, the function of front mounted, preceding wiring makes the utility model discloses an analog input trouble recording device of preceding wiring can adopt as shown in figure 12 rows equipment put the mode, has increased the utilization ratio of the capacity in prefabricated cabin, reduces the cost of constructing the transformer substation.

The utility model provides an analog quantity fault recording device of preceding wiring, its concrete structure is as shown in fig. 3-10, including the cabinet body 3, man-machine interaction module 1, front panel 7, rotatory hinge 8 and backplate 5, man-machine interaction module 1 installs on front panel 7, and front panel 7 sets up in the front of the cabinet body 3, and one side of front panel 7 is connected through rotatory hinge 8 with the cabinet body 3, and front panel 7 can be along rotatory hinge 8 left and right upsets; the back plate 5 is arranged inside the cabinet body 3, and a power panel 10 is further inserted and mounted on the back plate 5; a switching gauge plate 11, an analog gauge plate 12 and a collecting plate 13; the data processing board 14 and the man-machine interaction module 1 are connected through a back board 5; the man-machine interaction module 1 is connected with a data processing board 14, and the data processing board 14 is respectively connected with the power panel 10 and the acquisition board 13 through a backboard data bus.

During operation, can operate on the man-machine interaction module 1 of front panel 7, when needs are worked a telephone switchboard or debugged, then with front panel 7 along rotating hinge 8 left and right upsets, open the cabinet body, expose plug-in components integrated circuit board (like power strip 10, switch gage 11, analog gage 12, collection board 13, data processing board 14 etc.) and binding post, debugging interface etc. on backplate 5, conveniently accomplish the relevant operation such as wiring, debugging in the back floor. The switching is carried out in a left-right turning mode, so that the functions of front man-machine interaction, front installation and front wiring are realized.

In order to avoid the loss of the mounting screws on the front panel 7, the front panel 7 can be fixed with the cabinet 3 through the release screws 6.

In order to facilitate maintenance and debugging, the power panel 10, the switching gauge panel 11, the analog gauge panel 12, the acquisition panel 13, the data processing panel 14, the human-computer interaction module 1 and the back panel 5 are connected through wiring terminals, and the wiring is regularly distributed in the wiring area 4 of the cabinet body.

The utility model discloses possess preceding wiring function, be through unscrewing not taking off behind the screw 6, open front panel 7 through rotatory hinge 8, when front panel 7 opened front panel rotational position 9 in to figure 5, can realize in figure 5 to the operation such as shifting of various plug-in components integrated circuit boards on backplate 5 insert, wiring, test and debugging.

The input end of the power panel 10 is connected with the voltage of AC/DC220V or AC/DC110V, after the voltage is converted by the power isolation module, the output end of the power panel 10 outputs the voltage of +24V, +12V, +5V, and provides power for the whole device.

As shown in fig. 7, the acquisition board 13 includes a communication module and an FPGA chip; the communication module is connected with the FPGA chip, and the FPGA chip is connected with the interface of the back plate 5. The acquisition board acquires analog input and switching value input signals through the back board and transmits the acquired analog input and switching value input signals to the FPGA chip, and the FPGA chip transmits data to the data processing board through the Ethernet port; the FPGA chip module is internally integrated with a time synchronization circuit and a power state monitoring circuit, the time synchronization circuit is a synchronous clock circuit with a unified system, has a GPS synchronous clock function, and has the functions of power state monitoring and 4-path relay output.

The FPGA chip module is XC6SLX45T-2FGG484I in chip model, reads discrete voltage and current data from a backplane data bus, marks an absolute time scale on each sampling point according to GPS time, marks a data packet according to a predefined data structure type, and sends the data packet to a data processing board through a network interface.

The time synchronization circuit is connected with the FPGA chip to realize the GPS time synchronization function, and in order to generate a high-precision clock signal, the counter and the comparator are adopted to divide the frequency of the high-precision crystal oscillator to generate a second clock signal of the crystal oscillator. And the FPGA chip corrects the comparison value to generate a corrected second clock. And latching the arrival time of the GPS second clock, namely the phase difference between the corrected second clock and the GPS second clock by a latch. And generating a deviation sequence of the GPS second clock and the crystal oscillator second clock by analyzing the corrected values of the phase difference and the comparison value. The deviation comprises a random drift error of a GPS clock and an accumulated error of a crystal oscillator; estimating two errors by adopting a unitary quadratic regression analysis model, and separating respective errors; and the accumulated error of the crystal oscillator is corrected to construct a simple and convenient high-precision clock generating device. The comparison value is set once every second, and the comparison value to be set at this time is calculated according to the GPS second clock error measured at the previous n times and the historical data of the comparison value set at the previous n times.

The device comprises a power state monitoring circuit and a 4-path relay output function, when the device runs and receives device self-checking information sent by GPIO (general purpose input/output) data processing, the running state of the device is sent to the outside through the relay, and the output information is starting, abnormity, fault and power loss.

The acquisition board 13 further includes a plurality of groups of network debugging modules, each group of network debugging module includes a network debugging interface RJ45 and a network debugging chip PHY Marvell 88E1512, and the network debugging interface RJ45 is connected with the FPGA chip through the network debugging chip PHY Marvell 88E 1512.

As shown in fig. 8, the data processing board 14 includes a flash memory sata card/hard disk, four network ports, a GPIO interface, and a CPU processing module connected to the flash memory sata card/hard disk, the four network ports, and the GPIO interface. The model of the CPU processing module is J1900. The model of a driving chip of the GPIO interface is SN74LVC8T 24.

The data processing board 14 is provided with a linux operating system and a client background management application program of a front wiring analog input failure device, receives data sent by the acquisition board through an Ethernet port, performs operation after receiving the data, stores the data, sends the operated data to a scheduling data network according to a predefined data structure through the Ethernet port, and the background management program has the functions of fault recording, fault analysis, file management, fixed value configuration, historical record viewing, data storage, data display, printing and the like.

As shown in fig. 9, the switching value board includes a multi-path photo isolator, an anti-voltage interference circuit, a first stage buffer, a CPLD, and a second stage buffer; the output end of the multi-path photoelectric isolator is connected to the input end of the CPLD through the voltage interference resisting circuit and the first-stage buffer in sequence; the output end of the CPLD is connected with a backboard data bus through a second-stage buffer. The multi-path photoelectric isolator is a TLP121 device, and the voltage disturbance rejection circuit is a TVS voltage disturbance rejection circuit with the model number P6SMB43 CA. In this embodiment, the first-stage buffer adopts four general buffers, the four general buffers divide the 64-path switching value signal into 4 groups of eight-path signals, and the CPLD performs data buffering on 2 groups of eight-path signals through the first-stage buffer; the second-stage buffer adopts two general buffers, and the CPLD performs data buffering on 2 groups of eight signals which are not buffered in the 4 groups of eight signals through the second-stage buffer. In addition, the first-stage buffer can also adopt two general buffers, the two general drivers connect the 32-path analog quantity signals collected by the 6 AD7606 to the FPGA chip, and the output end of the FPGA is connected with the backboard data bus through the second-stage buffer.

Referring to fig. 10, the analog board includes a plurality of analog-to-digital conversion circuits (analog-to-digital conversion chips), and the output ends of the plurality of analog-to-digital conversion circuits and the first-stage buffer are connected to the input end of the FPGA chip; the output end of the FPGA chip is connected with a backboard data bus through a second-stage buffer, wherein the analog-to-digital conversion circuit is an AD7606 device.

The utility model provides a human-computer interaction module is the liquid crystal display who touches function through the lvds interfacing strip on the data processing board, and the model is G121SN 01. And the man-machine interaction operation is completed through the liquid crystal display with touch.

The utility model discloses possess preceding human-computer interaction, front mounted, preceding wiring function and open the front panel of taking human-computer interaction module through the mode of controlling the upset, leave sufficient space, dial the picture peg board, work a telephone switchboard for its binding post, the debugging mouth tests the operation etc.

It should be emphasized that the term "comprises/comprising" when used herein, is taken to specify the presence of stated features, elements, steps or components, but does not preclude the presence or addition of one or more other features, elements, steps or components.

While the present invention has been disclosed above by the description of specific embodiments thereof, it should be understood that all of the embodiments and examples described above are illustrative and not restrictive. Various modifications, improvements or equivalents to the invention may be devised by those skilled in the art within the spirit and scope of the appended claims. Such modifications, improvements and equivalents are also intended to be included within the scope of the present invention.

Claims (10)

1. The utility model provides an analog input trouble record ripples device based on preceding wiring which characterized in that: the intelligent cabinet comprises a cabinet body and a man-machine interaction module arranged on the cabinet body, wherein a front panel, a rotary hinge and a back panel are arranged on the cabinet body;

the man-machine interaction module is arranged on a front panel, the front panel is arranged on the front side of the cabinet body, one side of the front panel is rotatably connected with the cabinet body through a rotating hinge, and the front panel is turned left and right through the rotating hinge;

the back plate is arranged in the cabinet body, a power panel, a switching gauge plate, an analog gauge plate, a collecting plate, a data processing plate and a PT/CT isolating unit are further inserted and arranged on the back plate, the power panel, the switching gauge plate, the analog gauge plate, the collecting plate, the data processing plate, the PT/CT isolating unit and the man-machine interaction module are connected with the back plate through connecting terminals, and the connecting terminals are regularly distributed in a wire arrangement area of the cabinet body;

wherein, still fix with the cabinet body through a plurality of screws on the front panel.

2. The analog input fault recording device of claim 1, wherein: the PT/CT isolation unit comprises a plurality of voltage transformers and a plurality of current transformers, and the voltage transformers and the current transformers are connected with the analog quantity board through special cables.

3. The analog input fault recording device of claim 1, wherein: the input end of the power panel is connected with the voltage of AC/DC220V or AC/DC110V, and the output end of the power panel outputs the voltage of +24V, +12V, + 5V.

4. The analog input fault recording device of claim 1, wherein: the switch gauge plate comprises a multi-path photoelectric isolator, an anti-voltage interference circuit, a first-stage buffer, a CPLD and a second-stage buffer; the output end of the multi-path photoelectric isolator is connected to the input end of the CPLD through the voltage interference resisting circuit and the first-stage buffer in sequence; the output end of the CPLD is connected with a backboard data bus through a second-stage buffer.

5. The analog input fault recording device of claim 4, wherein: the first-stage buffer adopts four general buffers, the four general buffers divide multi-path switching value signals output by the multi-path photoelectric isolator into 4 groups of eight signals, and the CPLD performs data buffering on 2 groups of eight signals through the first-stage buffer; the second-stage buffer adopts two general buffers, and the CPLD performs data buffering on 2 groups of eight signals which are not buffered in the 4 groups of eight signals through the second-stage buffer.

6. The analog input fault recording device of claim 4, wherein: the acquisition board comprises a communication module and an FPGA chip which are electrically connected with each other, and the FPGA chip is connected with an interface of the back board.

7. The analog input fault recording device of claim 6, wherein: the acquisition board further comprises a plurality of groups of network debugging modules, each group of network debugging module comprises a network debugging interface and a network debugging chip, and the network debugging interface is connected with the FPGA chip through the network debugging chip.

8. The analog input fault recording device of claim 6, wherein: the acquisition board further comprises a time synchronization circuit connected with the FPGA chip.

9. The analog input fault recording device according to any one of claims 6 to 8, wherein: the analog quantity board comprises a plurality of analog-to-digital conversion circuits, and the output ends of the plurality of analog-to-digital conversion circuits and the first-stage buffer are connected with the input end of the FPGA chip; the output end of the FPGA chip is connected with a backboard data bus through a second-stage buffer.

10. The analog input fault recording device of claim 1, wherein: the data processing board comprises a flash memory mSATA card/hard disk, four network ports, a GPIO interface and a CPU processing module, wherein the flash memory mSATA card/hard disk, the four network ports and the GPIO interface are electrically connected with the CPU processing module.

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