CN204925317U - A distribution network automation terminal for quick fault localization - Google Patents

Abstract

The utility model discloses a distribution network automation terminal for quickly locating faults, comprising a main control module, a fault acquisition module, a communication module and a power supply module, the main control module is used for signal processing and control, and sends information to the distribution network The master station positioning system is processed by the distribution network master station positioning system and outputs graphical positioning results; the communication module is used for signal transmission between modules, including a variety of communication methods; the fault acquisition module is integrated inside the terminal for fault indicator The fault signal sent is sampled in real time. The fault indicator sends the fault signal to the terminal through the small wireless communication module, and the terminal performs logical processing and judgment on the fault signal. The utility model is based on the feeder terminal, and by integrating the function of the fault indicator, it effectively expands the isolation density of the fault section, subdivides the fault location point, and improves the accurate and rapid judgment of the ground fault; the equipment is small in size, integrated High degree, reducing the installation and maintenance process of the product.

Description

A distribution network automation terminal for fast fault location

technical field

The utility model belongs to the technical field of distribution network, relates to a fault detection technology of a distribution network, and specifically refers to a distribution network automation terminal for quickly locating faults.

Background technique

The construction of smart distribution network aims at "improving the reliability of power supply, improving the quality of power supply, and improving the level of distribution network management", and follows the principles of "comprehensive, applicable, differentiated and forward-looking" to ensure reliable, efficient and flexible operation of the distribution network. As the collector of distribution network information, the distribution network terminal is equivalent to the eyes and hands of the system. It is used to collect line voltage, current, calculated power, etc., and at the same time, it can receive instructions from the superior to close and open the switch.

With the development of distribution network technology, the matching intelligent switch has the functions of high performance, high reliability, maintenance-free, and providing networked telecontrol interface; whether it is a "two remote" or "three remote" fault indicator All are limited by the communication distance. In order to quickly locate the fault, the number of related equipment investment will inevitably increase, resulting in an increase in the cost of the project; in order to effectively expand the isolation density of the fault section, reduce the number of indicators and collectors installed , by adopting micro-power wireless frequency hopping communication means, the local wireless network networking is used to forward fault information. On the other hand, the ARM9 main control module unifies the acquisition module, signal processing module, and communication module. Through the reasonable configuration of power distribution terminals and intelligent switches, functions such as remote signaling, telemetry, remote control, and remote adjustment are realized.

Utility model content

Aiming at the above technical problems, the utility model provides a distribution network automation terminal for quickly locating faults, which can effectively reduce the installation quantity of fault indicators while ensuring fast and accurate fault locating and isolation, reduce costs, and improve equipment level of integration.

The utility model realizes above-mentioned purpose through following technical scheme:

A distribution network automation terminal for quickly locating faults, including a main control module, a fault acquisition module, a communication module and a power supply module;

The main control module is a highly integrated signal processing and control module, which sends the processed information to the distribution network master station positioning system, and the distribution network master station positioning system processes and outputs graphical positioning results;

The fault acquisition module is integrated inside the terminal and is used for real-time sampling of the fault signal sent by the fault indicator;

The communication module is used for signal transmission between modules, including multiple communication modes of a small wireless communication module and an optical fiber/GPRS communication module;

The power supply module provides the power required for the main control module to work.

As a preferred solution, the fault indicator is a two-remote fault indicator, and is composed of a plurality of two-remote fault indicators arranged to form a local wireless network network.

As a preferred solution, the local wireless network has a micro-power wireless frequency hopping communication function, forwards the fault information through the local wireless network, and reports it to the distribution network master station positioning system in real time, which is processed and output by the distribution network master station positioning system Graphical positioning results.

As a preferred solution, the fault indicator sends a fault signal to the terminal through the small wireless communication module.

As a preferred solution, the communication between the terminal and the positioning system of the distribution network master station adopts a double-loop self-healing method.

As a preferred solution, the main control module is composed of an ARM9 processor, a memory, a watchdog, a real-time clock, a peripheral drive circuit interface, and a liquid crystal display.

As a preferred solution, the ARM9 processor adopts Atmel9X25 main chip and AD7606 for analog-to-digital conversion, which combines signal processing and digital-to-analog conversion into one, effectively improving the data processing speed.

The beneficial effects of the utility model are:

1. The utility model is based on the feeder terminal, by integrating the function of the fault indicator, it effectively expands the isolation density of the fault section, subdivides the fault location point, and improves the accurate and rapid judgment of the ground fault; the equipment is small , High integration, reducing the installation and maintenance process of the product;

2. The utility model is composed of a fault indicator to form a local wireless network network, which has the function of micro-power wireless frequency hopping communication. The fault information is forwarded through the local wireless network network, which can realize fast and accurate fault location and effectively reduce fault indications. the number of installed devices;

3. The terminal of the present invention realizes the advantages of low cost, small size, and high integration.

Description of drawings

Fig. 1 is a structural schematic block diagram of the utility model;

Fig. 2 is a schematic diagram of the basic frame of the utility model terminal;

Fig. 3 is a schematic diagram of the communication structure of a specific embodiment of the terminal of the present invention.

Detailed ways

The utility model and its effects will be further elaborated below in conjunction with the accompanying drawings and embodiments.

As shown in Figures 1 and 3, a distribution network automation terminal for quickly locating faults, including a main control module, a fault acquisition module, a communication module, and a power supply module that provides power to the main control module;

The main control module is a highly integrated and multifunctional signal processing and control module, which sends the processed information to the distribution network master station positioning system, which processes and outputs graphical positioning results;

The communication module is used for signal transmission between modules, including various communication methods of small wireless communication module and optical fiber/GPRS communication module

The fault acquisition module is integrated inside the terminal and is used for real-time sampling of the fault signal sent by the fault indicator. The fault indicator sends the fault signal to the terminal through the small wireless communication module, and the terminal performs logical processing and judgment on the fault signal. The utility model uses the existing feeder terminal FTU as the distribution network terminal, and by integrating the function of the fault indicator, effectively expands the isolation density of the fault section, subdivides the fault location point, and achieves an accurate and fast detection of the grounding fault. judge. The terminal integrates a fault acquisition module and adopts a highly integrated main control module, which makes the device small in size and high in integration, reducing the installation and maintenance process of the product.

The highly integrated and multi-functional main control module is composed of ARM9 processor, memory, watchdog, real-time clock, peripheral drive circuit interface, liquid crystal display and other components; The signal processing and digital-to-analog conversion functions are combined into one, which effectively improves the data processing speed. The data bus and address bus of the processor are bidirectionally connected, and the bus expanded through the two-wire transmission completes the control of the modules of binary input YX and binary output YK. In terms of communication mode, the multiplexing function of serial port expansion is realized; transparent transmission is performed between the serial port of the ARM9 processor and the AtmelR21 serial port, thereby completing the data forwarding of the wireless networking of the indicator; Then convert it into electrical port and use it with optical fiber module.

The fault indicator is a two-remote fault indicator, and is composed of multiple two-remote fault indicators arranged to form a local wireless network network. Specifically, the basic network nodes are composed of three two-remote fault indicators arranged vertically, and the basic network nodes are arranged horizontally with a distance of 200 meters to form a local wireless network network. The basic network node communicates with the main control module through a small wireless communication module. As shown in Figure 2, A, B, and C are all basic network nodes. The smart terminal close to point A communicates through the small wireless network, and the lower point B is similar to point A, and the lower point C is the lower level of point B, and so on. 5 levels of networking can be set. The local wireless network has the function of micro-power wireless frequency hopping communication. The fault information is forwarded through the local wireless network, which expands the isolation density of the fault section, subdivides the fault location point, and reduces the number of collectors installed. .

The two-remote fault indicator transmits the fault information to the terminal through the small wireless network. After simple logic processing, the corresponding information is uploaded to the distribution network master station positioning system in real time, and the distribution network master station positioning system processes and outputs graphical positioning. Results: In order to ensure the safety and reliability of the remote control operation, the communication between the terminal and the positioning system of the distribution network master station is carried out in a double-loop self-healing manner.

The above embodiments are only exemplary, and will not limit the utility model. It should be pointed out that for those skilled in the art, under the technical inspiration provided by the utility model, other equivalent modifications and improvements made are all It should be regarded as the protection scope of the present utility model.

Claims (7)

1. for a distribution automation terminal for quick position fault, it is characterized in that: described terminal comprises main control module, fault collection module, communication module and power module;

Described main control module is high integrated signal transacting, control module, and the information after process is sent to distribution main website positioning system, by the positioning system process of distribution main website and output pattern positioning result;

Described fault collection module integration, at terminal inner, carries out real-time sampling for the fault-signal sent fault detector;

Described communication module is used for the Signal transmissions of intermodule, comprises the multiple communication modes of small wireless communication module and optical fiber/GPRS communication module;

Described power module provides the power supply needed for work for main control module.

2. a kind of distribution automation terminal for quick position fault according to claim 1, is characterized in that: described fault detector is two distant fault detectors, and is arranged by multiple two distant fault detectors and form Local wireless network networking and form.

3. a kind of distribution automation terminal for quick position fault according to claim 2, is characterized in that: described Local wireless network networking possesses micropower wireless frequency hopping communication function.

4. a kind of distribution automation terminal for quick position fault according to claim 1, is characterized in that: fault-signal is sent to terminal by small wireless communication module by described fault detector.

5., according to the arbitrary described a kind of distribution automation terminal for quick position fault of claim 1-4, it is characterized in that: between described terminal and distribution main website positioning system, adopt the mode of dicyclo self-healing to carry out communication.

6., according to the arbitrary described a kind of distribution automation terminal for quick position fault of claim 1-4, it is characterized in that: described main control module is made up of ARM9 processor, storer, house dog, real-time clock, peripheral drive circuit interface, LCDs.

7. a kind of distribution automation terminal for quick position fault according to claim 6, is characterized in that: described ARM9 processor adopts Atmel9X25 master chip to coordinate with analog to digital conversion AD7606, signal transacting and analog conversion function is united two into one.