CN211554708U - Power transformer analog quantity on-site module - Google Patents

Abstract

The utility model discloses a power transformer analog quantity module on spot, including power module, AD acquisition module, signal processing module, man-machine interaction module and signal switching module, power module is AD acquisition module, signal processing module, man-machine interaction module, signal switching module power supply respectively, AD acquisition module, man-machine interaction module link to each other with signal processing module through signal switching module respectively; the signal processing module comprises a communication bottom plate and a communication board, and realizes the communication function between the analog quantity on-site module and the comprehensive automatic control system of the transformer substation and between the on-site modules. The utility model discloses realize that the analog quantity module in the spot exempts from the configuration, under the prerequisite of discernment, self-diagnosis function, provide a new mode for changing module device realization plug and play, standardization, modularized design in the spot to satisfy the application demand of electric power thing networking wisdom transformer substation examination construction engineering.

Description

Power transformer analog quantity on-site module

Technical Field

The utility model relates to a wisdom transformer substation field especially relates to a power transformer analog quantity module on spot.

Background

At present, the power transformer of electric power thing networking wisdom transformer substation is in new product research and development stage on the spot module, mainly has following problem: (1) in the prior art, secondary equipment manufacturers in the intelligent transformer substation are multiple, hardware types are multiple, interfaces are complex, board cards are incompatible with one another, maintenance and replacement modes are different, operation and maintenance difficulty is greatly increased, the number of intelligent secondary equipment in the intelligent transformer substation is more due to the application of on-site modules, related technical standards for the equipment are lacked in China, and the standardized interface design is to be standardized; (2) the application of on-site modules increases the difficulty of operation and maintenance in the station.

Disclosure of Invention

The to-be-solved technical problem of the utility model is to provide a power transformer analog quantity module on the spot, realize that the analog quantity module on the spot exempts from the configuration, under the prerequisite of self-recognition, self-diagnosis function, for changing module device on the spot and realizing plug-and-play, standardization, modularization and intelligent design and provide a new mode to satisfy the application demand of electric power thing networking wisdom transformer substation examination construction engineering.

In order to solve the technical problem, the utility model discloses a technical scheme is: a power transformer analog quantity on-site module comprises a power supply module, an AD acquisition module, a signal processing module, a man-machine interaction module and a signal switching module, wherein the power supply module is used for supplying power for the AD acquisition module, the signal processing module, the man-machine interaction module and the signal switching module respectively; the signal processing module includes communication bottom plate and communication board, and the communication bottom plate includes the STM32 chip, two way LC communication light mouths, and the communication board includes the ARM chip, and the communication board supports IEC61850 communication protocol and HSR PRP network protocol, and the STM32 chip is through serial or parallel mode and AD acquisition module communication connection, and STM32 chip and communication board communication connection, two way LC communication light mouths realize the end to end of HSR dual-port, thereby constitute HSR looped netowrk structure with a plurality of modules on the spot.

Furthermore, the communication bottom plate also comprises a debugging power grid port for realizing the debugging function of the communication plate system.

Furthermore, the STM32 singlechip realizes the communication connection with the communication board through RS 485.

Further, the ARM chip supports adaptive Ethernet and fiber Ethernet.

Furthermore, the AD acquisition module realizes acquisition of 12 paths of 4-20 mA current and 0-5V voltage analog quantity signals in a mode of a dial switch and a jumper wire.

Furthermore, the signal switching module adopts an I/O connector to realize the signal transmission between the human-computer interaction module and the signal processing module, and adopts 4 pairs of [ zyy1] pluggable I/O connectors to realize the signal transmission among the power module, the AD acquisition module and the signal processing module.

Furthermore, the signal switching module is fixed in the case through bolts, and the plugging operation of the power module, the AD acquisition module and the signal processing module is realized through a sliding groove type guide rail in the case.

Furthermore, the power module, the AD acquisition module, the signal processing module and the signal switching module are all arranged in the case, and the case is fixedly installed in the on-site equipment cabin of the transformer through upper and lower bolts.

The utility model has the advantages that: the utility model discloses with standardized interface design, integrated circuit board modularization equipment, device body integrated circuit board plug-and-play and be connected plug-and-play's design with other devices, through electric current and the voltage signal who gathers power transformer secondary protection equipment transmission, and carry out control processing and judgement with the information of gathering, insert automatic private network through HSR looped netowrk communication protocol at last, realize transformer body oil face temperature signal, body oil level signal, have analog quantity signals such as tapping switch oil level signal and gather and the function of handling on the spot.

The analog quantity on-site module device is installed in a terminal box or a control cubicle of a power transformer body on site, on-site remote cable wiring is effectively reduced, the structural design of the device is compact, the plug-and-play, standardization and modular design ideas are adopted, the rapid access system of new equipment can be guaranteed, the universality and the replacement efficiency of the equipment are improved, the problem of difficulty in maintaining and replacing the field equipment is reduced, and the maintenance period of the equipment is shortened.

Drawings

Fig. 1 is a schematic external structural view of the present invention;

FIG. 2 is a schematic view of the internal structure of the present invention;

FIG. 3 is a schematic block diagram of the present invention;

in the figure: 1. the system comprises a power supply module, 2, an AD acquisition module, 3, a signal processing module, 4, a communication bottom plate, 5, a communication board, 6, an LC communication optical port, 7, a debugging power grid port, 8, a signal switching module, 9, a man-machine interaction module, 10 and a case.

Detailed Description

The invention will be further described with reference to the accompanying drawings and specific embodiments.

Example 1

The embodiment discloses a power transformer analog quantity local module, as shown in fig. 3, including power module 1, AD acquisition module 2, signal processing module 3, human-computer interaction module 9 and signal switching module 8, power module 1 adopts DC220V or DC110V to supply power, and can convert DC power supply into ± 5V and ± 24V power signals, be AD acquisition module 1, signal processing module 3, human-computer interaction module 9, signal switching module 8 supplies power respectively, AD acquisition module 2, human-computer interaction module 9 link to each other with signal processing module 3 through signal switching module 8 respectively.

The AD acquisition module 2 acquires analog quantity information of the power transformer and transmits the acquired information through the signal switching module 8 and the signal processing module 3. The signal processing module 3 is a core module of the device, receives the information transmitted by the AD acquisition module 2 through the signal switching module 9, and performs data analysis and prejudgment processing. Finally, the man-machine interaction module 8 receives the information transmitted by the signal processing module 3 through the signal switching module 9, and dynamically displays the IP address of the device, the running/abnormal information of the device and the transformer body.

As shown in fig. 2, the AD acquisition module 2 includes two boards, and each board can realize an acquisition function of 8 analog signals. The two board cards realize 12-path 4-20 mA current and 0-5V voltage analog quantity signal acquisition in a dial switch and jumper mode, and an AD acquisition chip of an ADI company is adopted to convert acquired analog quantity signals into digital quantity signals.

As shown in fig. 2, the signal processing module 3 includes communication bottom plate 4 and communication board 5, communication bottom plate 4 includes the STM32 chip, two way LC communication optical ports 6 and 1 debugging electric wire netting mouth 7, communication board 5 includes the ARM chip, communication board 5 supports IEC61850 communication protocol and HSR/PRP network protocol, the STM32 chip is through serial or parallel mode and AD acquisition module 2 communication connection, and the communication mode realization such as STM32 chip through RS485 with communication board 5 is connected, two way LC communication optical ports 6 adopt SFP series new product, an end to end for realizing the dual-port of HSR, thereby constitute the HSR looped netowrk structure with a plurality of on-the-spot modules. In this embodiment, the debugging power grid port 7 supports a gigabit ethernet and is used to implement a debugging function of the communication board system. The ARM chip supports 10/100/1000BASE-T adaptive Ethernet or 100BASE-FX and 1000 BASE-X fiber Ethernet.

In this embodiment, the signal processing module 3 realizes the communication functions between the analog quantity local module and the integrated automation control system of the transformer substation and between the local modules based on the ring network communication of the HSR bus transmission technology, and the communication protocol satisfies the IEC61850 standard.

In this embodiment, the signal switching module 8 uses an I/O connector to implement signal transmission between the human-computer interaction module and the signal processing module, and uses 4 pairs of pluggable I/O connectors [ zyy2] to implement signal transmission between the power module, the AD acquisition module, and the signal processing module.

In order to realize plug and play of each module board card, a sliding groove type guide rail for realizing plug and pull operation of the power module, the AD acquisition module and the signal processing module is arranged in the case, and a plug-in I/O connector for plug and pull operation of the power module, the AD acquisition module and the signal processing module is arranged on the signal switching module 8.

In this embodiment, the human-computer interaction module 9 mainly realizes real-time display of the last three bits of information of the IP address code of the analog quantity local module device, and realizes the functions of modifying the IP address and indicating the device operation/alarm information through keys.

As shown in fig. 1, the power module 1, the AD acquisition module 2, the signal processing module 3 and the signal switching module 8 are all arranged in the case 10, the case 10 is fixedly installed in the on-site equipment compartment of the transformer through upper and lower bolts, the case can realize the functions of shock resistance and protection of the device, and can also realize the functions of convenient integral installation, disassembly and replacement of the device, thereby improving the installation operability of the device and the on-site equipment compartment.

The utility model discloses an analog quantity module device on spot installs in power transformer body terminal box or collection accuse cabinet on the spot, effectively reduces on-the-spot remote cable wiring, and device structural design is compact, adopts plug-and-play, standardization and modular design thinking, can guarantee that new equipment inserts the system fast, improve equipment commonality and change efficiency, reduce the problem that the field device maintenance was changed the difficulty, shorten the overhaul of the equipments maintenance cycle.

The utility model discloses an analog quantity module input/output interface and integrated circuit board level interface on the spot all adopt unified standardized connector, realize hardware aspect electrical connection's plug-and-play nature. Compared with the prior art, the utility model provides high device flexibility and expansibility improve field work efficiency, shorten electric power system construction and maintenance cycle by a wide margin, provide very big convenience for the system development and the maintenance of module on the spot.

The foregoing description is only for the basic principles and preferred embodiments of the present invention, and modifications and substitutions made by those skilled in the art according to the present invention belong to the protection scope of the present invention.

Only the I/O connector and the connection terminal can be searched, what the standard I/O connector and the standard connection terminal are

Only the I/O connectors and terminals, and what the standard I/O connectors and terminals are.

Claims (8)

1. An analog quantity on-site module of a power transformer is characterized in that: the system comprises a power supply module, an AD acquisition module, a signal processing module, a man-machine interaction module and a signal switching module, wherein the power supply module is used for supplying power for the AD acquisition module, the signal processing module, the man-machine interaction module and the signal switching module respectively; the signal processing module includes communication bottom plate and communication board, and the communication bottom plate includes the STM32 chip, two way LC communication light mouths, and the communication board includes the ARM chip, and the communication board supports IEC61850 communication protocol and HSR PRP network protocol, and the STM32 chip is through serial or parallel mode and AD acquisition module communication connection, and STM32 chip and communication board communication connection, two way LC communication light mouths realize the end to end of HSR dual-port, thereby constitute HSR looped netowrk structure with a plurality of modules on the spot.

2. The power transformer analog quantity in-place module of claim 1, wherein: the communication bottom plate also comprises a debugging power grid port for realizing the debugging function of the communication plate system.

3. The power transformer analog quantity in-place module of claim 1, wherein: the STM32 singlechip realizes the communication connection with the communication board through RS 485.

4. The power transformer analog quantity in-place module of claim 1, wherein: the ARM chip supports adaptive Ethernet and fiber Ethernet.

5. The power transformer analog quantity in-place module of claim 1, wherein: the AD acquisition module realizes acquisition of 12 paths of 4-20 mA current and 0-5V voltage analog quantity signals in a mode of a dial switch and a jumper wire.

6. The power transformer analog quantity in-place module of claim 1, wherein: the signal switching module adopts a pluggable I/O connector to realize the signal transmission between the human-computer interaction module and the signal processing module, and adopts 4 pairs of pluggable I/O connectors to realize the signal transmission among the power module, the AD acquisition module and the signal processing module.

7. The power transformer analog quantity in-place module of claim 1, wherein: the signal switching module is fixed in the case through bolts, and the plugging operation of the power supply module, the AD acquisition module and the signal processing module is realized through a sliding groove type guide rail in the case.

8. The power transformer analog quantity in-place module of claim 1, wherein: the power module, the AD acquisition module, the signal processing module and the signal switching module are all arranged in the case, and the case is fixedly installed in the on-site equipment cabin of the transformer through upper and lower bolts.

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