CN209329781U - A distribution network operation and maintenance monitoring device - Google Patents

Abstract

The utility model discloses a kind of distribution O&M monitoring devices, it is related to distribution network system operation management technical field, it is still relatively backward so far for the monitoring management of distribution line, it can not adapt to the needs for the power supply reliability being increasingly enhanced, using including collecting unit and acquisition unit, collects the core cell data processing module in unit and be electrically connected respectively with GPRS long range wireless communication module, short-range wireless communication module, device positioning and time synchronization module, system memory module and system power supply control module；Short-range wireless communication module in acquisition unit inductively measures module, opposite voltage measurement module, low current automatic electricity getting module with electric current respectively and is electrically connected；First short-range wireless communication module passes through the scheme that radio is connect with the second short-range wireless communication module, and the apparatus structure is simple, and easy to operate, stability is good, convenient for assembling and maintenance, can increase substantially the efficiency of power distribution network operation monitoring.

Description

A distribution network operation and maintenance monitoring device

technical field

The utility model relates to the technical field of distribution network system operation and maintenance management, in particular to a distribution network operation and maintenance detection device.

Background technique

In the entire power system of our country, the power distribution equipment has a wide range of points, and the distribution network is the weakest link. The online monitoring of the distribution line status is an important part of the construction of the intelligent distribution network. An important technical means for the lean level of power distribution professional production and operation management. The monitoring and management of distribution lines is still relatively backward, unable to meet the needs of increasing reliability of power supply. The power supply station is the grassroots unit of the power grid company serving the society and the majority of electricity customers. The status of its distribution network operation and maintenance management directly reflects the high-quality service level of county-level power supply enterprises. Distribution network operation and maintenance is one of the core businesses of the power supply station. Strengthen the basic management of distribution network operation and maintenance, and use information technology to make management efficient and refined. Through technological transformation, management improvement and the use of informatization to make management efficient and fine distribution network operation and maintenance lean management, improve the level of distribution network operation and maintenance, and improve the reliability of power supply.

At present, the power supply station lacks the collection and monitoring of the operation data of the lines under its jurisdiction and the technical means to guide the production operation and maintenance business. Therefore, it is considered to design an online acquisition device suitable for 10kv overhead lines. The operation information is collected by the data acquisition device, and the intelligent diagnosis system is used to carry out efficient operation conditions and fault diagnosis. Diagnose and determine the fault area, accurately analyze the fault type, and provide early warning information and fault location information for the operation and maintenance personnel of the power supply station to improve the efficiency of operation and maintenance.

Therefore, it is necessary to develop a distribution network operation and maintenance monitoring device, regularly understand and analyze the various working conditions of the line, adopt intelligent means to guide the operation and maintenance management of the distribution network, and promote the development of distribution network operation and maintenance technology. develop.

Contents of the invention

In order to solve the above problems, the utility model adopts the following technical solutions to realize:

A distribution network operation and maintenance monitoring device, including a collection unit and a collection unit;

The collection unit includes a core unit data processing module, a GPRS long-distance wireless communication module, a first short-distance wireless communication module, a device positioning and time synchronization module, a system storage module and a system power control module;

The core unit data processing module is electrically connected to the GPRS long-distance wireless communication module, short-distance wireless communication module, device positioning and time synchronization module, system storage module and system power control module respectively;

The acquisition unit includes a current sensing measurement module, a relative voltage measurement module, a low current self-feeding module, and a second short-distance wireless communication module. Electrical connection of the current self-fetching module;

The first short-distance wireless communication module is connected with the second short-distance wireless communication module by radio.

Preferably, the microcontroller of the core unit data processing module adopts an STM32F103-VGT6 processor, which is used to collect the data information sent by the acquisition unit and then summarize and process the data, and upload the distribution network line information to distribution network master station;

The GPRS long-distance wireless communication module is used for data interaction with the distribution network master station, and the module uses wireless communication technology to transmit the collected distribution network line operation data to the distribution network master station for big data analysis and processing;

The core chip of the first short-distance wireless communication module adopts the CC1101E wireless radio frequency chip, which is used for data interaction with the acquisition unit, to obtain the operation information of the distribution network line collected by the data acquisition unit and the operation status of the acquisition unit, and to parameterize the acquisition unit configuration;

The device positioning and time synchronization module adopts GPS positioning technology to obtain the coordinate information of the physical location of the device and the precise synchronization time, which is used for positioning the location of the device and time synchronization;

The system storage module adopts a W25Q128 storage chip, which is used for system parameters, system operation logs, upgrade program files and collected distribution network line information;

The data collection unit adopts a hybrid power supply mode of solar power acquisition and storage battery power supply, which is used to provide electric energy for each unit in the device.

Preferably, the current sensing measurement module adopts a Rogowski coil current transformer for detecting current;

The short-distance wireless communication module adopts the CC1101E wireless radio frequency chip, which is used for data interaction with the collection unit. The parameter configuration, program upgrade and collected line information of each collection unit are transmitted to the collection unit through this module, and the collection unit summarizes and processes the three-phase The running line information collected by the collection unit.

Preferably, the low-current self-feeding module includes a transformer and a sorting filter circuit;

The output end of the transformer is connected to the input end of the sorting filter circuit, and the output end of the sorting filter circuit is respectively connected to each unit module in the acquisition module.

Preferably, the transformer includes an iron core and a coil;

The iron core has a ring structure, a coil (2) is wound on the iron core, a working air gap (3) is opened on the iron core, and an overhead transmission line (1) is passed through the center hole of the iron core.

Preferably, the current sensing measurement module includes a Rogowski coil current transformer and an amplifying circuit, one end of the output of the Rogowski coil current transformer is connected to the amplifying circuit through a resistor, and the other end of the output of the Rogowski coil current transformer is grounded;

The output terminal of the amplified circuit is connected with the second short-distance wireless communication module.

The distribution network operation and maintenance monitoring device is installed on the tower of the distribution network line, and an installation point is selected at an appropriate distance to monitor the operating status of the distribution network line in sections. Combined with the location of the device, the actual physical location can be marked on the map and the topological map of the monitoring device can be constructed. The operation and maintenance personnel can obtain the line operation information of each device installation point through the background system. The background system monitors and records the operation of the line in real time, and can perform load analysis and power quality analysis on the line. The operation and maintenance personnel can understand the operation status of the entire distribution line more intuitively. According to the relevant information, the operation and maintenance personnel can repair the overhead lines of the distribution network, improve their work efficiency, and further reduce the power outage time.

The device has the advantages of simple structure, convenient operation, good stability, convenient assembly and maintenance, and can greatly improve the efficiency of distribution network operation monitoring.

Description of drawings

Fig. 1 is a schematic diagram of an overall circuit framework of an embodiment provided by the utility model;

Fig. 2 is a schematic diagram of the circuit frame of the low-current self-feeding module in the embodiment provided by the utility model;

Fig. 3 is a schematic diagram of the circuit frame of the current sensing measurement module in the embodiment provided by the present invention.

Detailed ways

In order to make the purpose, technical solutions and advantages of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with Figures 1 to 3 in the embodiments of the present utility model. Obviously, the described The embodiments are some embodiments of the present utility model, but not all embodiments. The detailed description of embodiments of the invention generally described and illustrated in the drawings herein is not intended to limit the scope of the invention as claimed, but merely represents selected embodiments of the invention. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

As shown in Figure 1, a distribution network operation and maintenance monitoring device includes a collection unit and a collection unit. The collection unit includes a core unit data processing module, a GPRS long-distance wireless communication module, a first short-distance wireless communication module, a device positioning and time synchronization module, a system storage module and a system power control module. The core unit data processing module is electrically connected with the GPRS long-distance wireless communication module, the short-distance wireless communication module, the device positioning and time synchronization module, the system storage module and the system power control module respectively. The acquisition unit includes a current sensing measurement module, a relative voltage measurement module, a low current self-supplying module, and a second short-distance wireless communication module. The modules are electrically connected. The first short-distance wireless communication module is connected with the second short-distance wireless communication module by radio.

Among them, the MCU of the core unit data processing module adopts STMicroelectronics' STM32F103-VGT6 processor, which has high frequency, low power consumption, and rich peripheral resources, which can reduce the complexity and power consumption of external logic circuits. The core unit data processing module is used to collect the information collected by the acquisition unit, summarize and process the data, and upload the distribution network line information to the distribution network master station, which is the core part of the whole device.

The GPRS long-distance wireless communication module is used for data interaction with the distribution network master station. This module uses wireless communication technology to transmit the collected distribution network line operation data to the distribution network master station for large data analysis and processing. It is the information interaction of the entire device. important part.

The core chip of the first short-distance wireless communication module adopts Texas Instruments wireless radio frequency chip CC1101E, CC1101E is a mature and stable wireless radio frequency chip, and its characteristics are in line with the application scenarios of this product. The wireless communication module is used for data interaction with the data acquisition unit, to obtain the operation information of the distribution network collected by the data acquisition unit and the operation status of the acquisition unit, and to configure the parameters of the acquisition unit, which is the only communication between the data collection unit and the data acquisition unit Way.

The device positioning and time synchronization module is used to locate the location of the device and synchronize the time. The GPS positioning technology is used to obtain the coordinate information of the physical location of the device and the precise synchronization time, and the accurate synchronization time is used to set the system time of the device and the coordinates of the device. The information is sent to the master station of the distribution network through the wireless communication module to locate the device.

The system storage module is used for system parameters, system operation logs, upgrade program files and collected distribution network line information. The storage module memory chip uses W25Q128, which has low power consumption and large capacity. Its 16MB (byte) storage capacity can meet the needs of parameter storage, wave recording file storage and upgrade program storage.

The data collection unit adopts the hybrid power supply mode of solar energy and battery power supply. In the case of sufficient sunlight during the day, the solar power supply mode is used for power supply, and the battery is charged. When the solar power supply mode is insufficient, the module automatically switches to the battery power supply mode. The power supply mode ensures that the device can work stably and normally.

As shown in Figure 3, the current sensing measurement module includes a Rogowski coil current transformer and an amplifying circuit. One end of the output of the Rogowski coil current transformer is connected to the amplifying circuit through a resistor, and the other end of the output of the Rogowski coil current transformer is grounded. The output terminal is connected with the second short-distance wireless communication module, and the module is used for detecting current.

The short-distance wireless communication module adopts CC1101E wireless radio frequency chip, which is used for data interaction with the collection unit. The parameter configuration, program upgrade and collected line information of each collection unit are transmitted to the collection unit through this module, and the collection unit summarizes and processes the three-phase collection unit. Collected running line information.

As shown in Figure 2, the low-current self-power module includes a transformer and a sorting filter circuit. The output end of the mutual inductor is connected with the input end of the sorting filter circuit, and the output end of the sorting filter circuit is respectively connected with each unit module in the acquisition module. The transformer includes an iron core and a coil. The iron core has a ring structure. A coil 2 is wound on the iron core. A working air gap 3 is opened on the iron core. An overhead transmission line 1 is passed through the center hole of the iron core.

The distribution network operation and maintenance monitoring device is installed on the tower of the distribution network line, and an installation point is selected at an appropriate distance, and the distribution network line is operated by the current induction measurement module and the relative voltage detection module on the acquisition unit. The status is monitored and then sent to the sink unit via wireless communication. Combined with the location of the converging unit, the actual physical location can be marked on the map and a topology map of the monitoring device can be constructed. The operation and maintenance personnel can obtain the line operation information of each device installation point through the background system. The background system monitors and records the operation of the line in real time, and can perform load analysis and power quality analysis on the line. The operation and maintenance personnel can understand the operation status of the entire distribution line more intuitively. According to the relevant information, the operation and maintenance personnel can repair the overhead lines of the distribution network, improve their work efficiency, and further reduce the power outage time.

Claims (6)

1. a kind of distribution O&M monitoring device, which is characterized in that including collecting unit and acquisition unit；

It is described collect unit include core cell data processing module, GPRS long range wireless communication module, the first short distance without Line communication module, device positioning and time synchronization module, system memory module and system power supply control module；

The core cell data processing module respectively with the GPRS long range wireless communication module, short-distance wireless communication mould Block, device positioning and time synchronization module, system memory module and the electrical connection of system power supply control module；

The acquisition unit includes that electric current inductively measures module, opposite voltage measurement module, low current automatic electricity getting module, second short Distance wireless communication module, the short-range wireless communication module inductively measure module, opposite voltage measurement mould with electric current respectively Block, the electrical connection of low current automatic electricity getting module；

First short-range wireless communication module is connect by radio with second short-range wireless communication module.

2. distribution O&M monitoring device according to claim 1, it is characterised in that:

The microcontroller of the core cell data processing module uses STM32F103-VGT6 processor, and the module is for collecting Then the data information that the acquisition unit is sent carries out aggregation process to data, and distribution line information is uploaded to host It stands；

The GPRS long range wireless communication module is used to carry out data interaction with distribution main website, and the module is using wireless communication skill The distribution line operation data of acquisition is transferred to distribution main website and carries out big data analysis processing by art；

The first short-range wireless communication module core chips uses CC1101E radio frequency chip, is used for and acquisition unit Data interaction is carried out, the distribution line operation information of data acquisition unit acquisition and the operating status of acquisition unit are obtained, and Parameter configuration is carried out to acquisition unit；

Described device positioning and time synchronization module using GPS positioning technology obtain device where physical location coordinate information and It is used for positioning device position and time synchronization accurate synchronization time；

The system memory module stores up chip using W25Q128, is used for system parameter, system running log, upgrade procedure file With the distribution network line information of acquisition；

The data collection unit takes the combined power supply way of the additional storage battery power supply of electricity using solar energy, for being each in device A unit provides electric energy.

3. distribution O&M monitoring device according to claim 1, it is characterised in that:

The electric current inductively measures module and uses Rogowski coil current transformer, for detecting electric current；

The short-range wireless communication module use CC1101E radio frequency chip, for collect unit carry out data interaction, The line information that parameter configuration, the program of each acquisition unit upgrade and acquire passes through the module transfer to unit is collected, and collects The working line information of unit aggregation process three-phase acquisition unit acquisition.

4. distribution O&M monitoring device according to claim 1, it is characterised in that:

The low current automatic electricity getting module includes mutual inductor and arrangement filter circuit；

The output end of the mutual inductor with arrange filter circuit input terminal connect, arrangement filter circuit output end respectively with it is described Each unit module connects in acquisition unit.

5. distribution O&M monitoring device according to claim 4, it is characterised in that:

The mutual inductor includes iron core, coil；

The iron core is ring structure, is arranged with coil (2) on iron core, a working gas gap (3) is offered on iron core, is maked somebody a mere figurehead defeated Electric wire (1) is threaded through in core center hole.

6. distribution O&M monitoring device according to claim 1, it is characterised in that:

It includes Rogowski coil current transformer and amplifying circuit, the Rogowski coil Current Mutual Inductance that the electric current, which inductively measures module, Output one end of device is connected in amplifying circuit by a resistance, the output other end ground connection of Rogowski coil current transformer；

The output end of the amplification electricity is connect with second short-range wireless communication module.