CN207559689U - A kind of low-voltage platform area intelligent monitor system - Google Patents

Abstract

The utility model discloses a kind of low-voltage platform area intelligent monitor system, including:It is separately positioned on the intelligent terminal of each monitoring point of low-voltage platform area distribution network, data concentrator and power distribution automation main station, intelligent terminal is by data acquisition unit, data processing unit and data memory cell group into, data acquisition unit respectively with data processing unit, data storage cell is electrically connected, it is connect using the RS485 interfaces in data concentrator with intelligent terminal, realize the real-time of data concentrator and intelligent terminal, telecommunication, and the mobile APN networks for passing through GPRS/4G transmit information to power distribution automation main station, after the collected data access power distribution automation main station of intelligent terminal, low-voltage platform area intelligent terminal and high voltage power distribution automated system etc. is made effectively to combine, solve the problems, such as " the blind tune " of low-voltage power distribution station area, rational allocation resource, controller switching equipment is carried out to safeguard and repair in time.

Description

An Intelligent Monitoring System for Low-voltage Platform Area

technical field

The utility model relates to the technical field of smart grids, in particular to an intelligent monitoring system for low-voltage station areas.

Background technique

In recent years, the power system has been more and more widely used. The distribution network is at the end of the power system, and has the distinctive characteristics of wide geographical distribution, large-scale power grid, various types of equipment, various network connections, and variable operation modes. The safety and stability of power distribution equipment is directly related to the reliable operation of the distribution network. In order to ensure the normal operation of the distribution network and prevent power accidents, it is very important to obtain the operating parameters of the power distribution equipment in time. Major power supply companies have invested a lot of manpower and material resources in the construction of smart grids, and the construction of smart grids has made significant progress. Using the basic data of smart grids for big data analysis, it solves practical problems such as grid safety, emergency repairs, and line loss management. The problem has also achieved initial results, but at present, only dozens of high-voltage switchgears with a voltage level of 10kV have been covered automatically, which can solve the automation needs of high-voltage and medium-voltage distribution networks, but there is still a lack of management in the distribution network area. Scientific and effective means to obtain basic data such as voltage, current, and residual current of low-voltage lines in real time can only rely on surveyors to use multimeters and other measuring tools to conduct field measurements in the distribution station area, which not only causes waste of human and material resources and other resources. There are also security risks to a certain extent. In the construction of 10kV/0.4kV power distribution low-voltage station areas to end users, there are still many weak links in data collection, communication interaction, monitoring and management, etc., which need to be improved urgently.

There are many reasons for failures in low-voltage station areas, such as aging equipment, long low-voltage power supply radius, and unbalanced three-phase power consumption. The existing leakage protection device performs trip protection based on local leakage information, and there is no effective fault location method after the fault occurs. . The intelligent distribution station area is an extension of the distribution automation system at the level of the low-voltage station area. Its comprehensive construction and implementation will completely improve the "blind adjustment" phenomenon of the low-voltage station area, improve the visualization level of the entire distribution network, and reduce the number of staff At the same time, real-time monitoring is carried out through intelligent distribution station areas, and a large amount of distribution network operation data is accumulated, which will effectively improve the service level of emergency repairs in low-voltage station areas, create a power supply environment with reliable power supply and high-quality services, and promote social economy. develop.

Utility model content

In order to solve these technical problems in the prior art, the utility model provides an intelligent monitoring system for the low-voltage station area, which can monitor the relevant data of the low-voltage station area in real time, and transmit the data to the master station of power distribution automation, which is convenient Maintenance and repair of power distribution equipment.

The technical scheme of the utility model is as follows:

An intelligent monitoring system for a low-voltage station area, used for real-time monitoring of relevant data of a low-voltage station area, and transmitting the data to the background in time, is characterized in that it includes:

Intelligent terminals, data concentrators and distribution automation master stations are respectively installed at each monitoring point of the distribution network in the low-voltage station area;

The intelligent terminal is composed of a data acquisition unit, a data processing unit and a data storage unit, and the data acquisition unit is electrically connected to the data processing unit and the data storage unit respectively;

The data concentrator includes an RS485 interface and an APN network server, and uses the RS485 interface to connect with an intelligent terminal to realize real-time and remote communication between the data concentrator and the intelligent terminal, and transmit information through the mobile APN network of GPRS/4G to the distribution automation master station.

Further, the data collection unit includes: a data collection module for transformer equipment, a data collection module for power supply lines, a data collection module for circuit breakers, a data collection module for isolating switches, a data collection module for grounding switches, and a data collection module for fire alarms.

Further, the related data includes voltage, current and switch state.

Further, the data processing unit includes a low-pass filter, a signal amplifier, a photoelectric isolator and a drive buffer circuit, the input end of the low-pass filter is connected to the output end of each acquisition module in the data acquisition unit, and the The output end of the low-pass filter is connected with the input end of the signal amplifier, the output end of the signal amplifier is connected with the input end of the photoelectric isolator, and the output end of the photoelectric isolator is connected with the driving buffer circuit The input end of the driving buffer circuit is connected with the input end of the data concentrator.

Further, the data storage unit is a Flash memory.

Further, the data concentrator also includes a storage module connected thereto, which is used to store the abnormal state information generated by the data concentrator according to the data collected by each collection module of the smart terminal.

Further, the distribution automation master station is equipped with a GIS map display module and a GIS map adjustment module.

Further, the monitoring system includes a strong magnet, and the intelligent terminal is installed on the power distribution equipment in the low-voltage station area through the strong magnet.

Further, the distribution automation master station includes an audible and electric alarm and an LCD display.

Further, the smart terminal includes a power module.

In the utility model, the data acquisition unit transmits the collected data to the data processing unit, and the data processing unit uploads the data to the data concentrator, thereby realizing the remote communication between the data concentrator and the intelligent terminals of each monitoring point. The data concentrator transmits the information to the main station of distribution automation through the mobile APN network of GPRS/4G. After the data collected by the intelligent terminal is connected to the main station of distribution automation, it will realize the 10 thousand functions of real-time monitoring, fault identification and positioning. The voltage distribution automation system extends to the low-voltage distribution station area, so that the intelligent terminal in the low-voltage station area can be effectively combined with the high-voltage distribution automation system, etc., to solve the problem of "blind adjustment" in the low-voltage distribution station area, to allocate resources reasonably, and to The electrical equipment can be maintained and repaired in a timely manner, supporting the operation and emergency repair work of the low-voltage distribution station area, and can quickly locate the fault location, greatly shortening the fault handling time, and improving the reliability of power consumption in the low-voltage distribution station area.

Description of drawings

In order to illustrate the technical solutions in the embodiments of the present utility model more clearly, the accompanying drawings required in the embodiments will be briefly introduced below.

Fig. 1 is the structure schematic diagram of a kind of low-voltage platform area intelligent monitoring system in the utility model;

Fig. 2 is the connection schematic diagram of data acquisition unit, data processing unit and data concentrator in the utility model;

In the figure: 1-intelligent terminal, 11-data acquisition unit, 12-data processing unit, 13-data storage unit, 2-data concentrator, 3-power distribution automation master station.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. the embodiment. Based on this embodiment, other embodiments obtained by those skilled in the art without making creative efforts are within the protection scope of the present application.

This embodiment provides an intelligent monitoring system for low-voltage station areas, which is used to monitor relevant data of low-voltage station areas in real time, and transmit the data to the background in time. As shown in Figure 1, the intelligent monitoring system of the low-voltage station area includes: an intelligent terminal 1, a data concentrator 2, and a distribution automation master station 3 respectively arranged at each monitoring point of the low-voltage station area distribution network.

The intelligent terminal 1 can monitor in real time the relevant data of the power distribution equipment in each monitoring point of the low-voltage station area, including parameters such as voltage, current, and switch status. On the power distribution equipment, it can be easily installed and removed. The smart terminal includes a data collection unit 11 , a data processing unit 12 and a data storage unit 13 , and the data collection unit 11 is electrically connected to the data processing unit 12 and the data storage unit 13 respectively. The smart terminal 1 includes a power module, which supplies power to the entire smart terminal.

In this embodiment, the data acquisition unit 11 of the intelligent terminal 1 includes: a transformer equipment data acquisition module, a power supply line data acquisition module, a circuit breaker data acquisition module, an isolating switch data acquisition module, an earthing switch data acquisition module, a fire alarm data acquisition module Acquisition module. The transformer equipment data acquisition module is used to collect the on-site transformer equipment and the analog quantity of the power distribution equipment that is compatible with the transformer equipment, the current, voltage, active power, reactive power, coil temperature, and oil temperature of each side of the transformer. The power supply line data acquisition module is used to collect the current, active power and reactive power of the power supply line, the current and frequency of the bus, the three-phase voltage, three-phase current, zero-sequence voltage and zero-sequence current of the power supply line. The circuit breaker data acquisition module, isolating switch data acquisition module, and grounding switch data acquisition module are all used to collect the switching values of on-site power distribution equipment. The switching values include: circuit breaker position, isolating switch position, grounding switch position, circuit breaker switch position, General signal of protection action, position of local/remote transfer switch, etc. The fire alarm data collection module is used to collect the fire alarm information sent by the fire detection alarm in the monitoring point.

Data processing unit 12 comprises low-pass filter, signal amplifier, photoelectric isolator and driving buffer circuit, and the input end of low-pass filter is connected with the output end of each acquisition module in the data acquisition unit 11, and the output end of low-pass filter is connected with The input terminal of the signal amplifier is connected, the output terminal of the signal amplifier is connected with the input terminal of the photoelectric isolator, the output terminal of the photoelectric isolator is connected with the input terminal of the driving buffer circuit, and the output terminal of the driving buffer circuit is connected with the input terminal of the data concentrator 2 connect.

The data storage unit 13 is used to store the collected data, such as a Flash memory, which will not lose data due to power failure.

The data concentrator 2 is an important relay node ensuring network coverage throughout the ad hoc network. The data concentrator 2 includes an RS485 interface and a mobile APN network server, and uses the RS485 interface to connect with the intelligent terminal 1 to realize real-time and remote communication between the data concentrator 2 and the intelligent terminal 1, and convert the collected data into a wireless 101 communication protocol, The information is transmitted to the distribution automation master station 3 through the GPRS/4G mobile APN network. This communication method has the characteristics of wide coverage and reliable communication, and can reliably transmit the data collected by the intelligent terminal 1 to the distribution automation master station. Station 3 effectively improves the real-time and accuracy of monitoring. The data concentrator 2 also includes a storage module connected thereto, which is used to store the abnormal state information generated by the data concentrator 2 according to the data collected by each collection module of the intelligent terminal 1 .

The distribution automation master station 3 is an important part to realize the intelligent monitoring function of the low-voltage station area. The distribution automation master station 3 is equipped with a GIS map display module and a GIS map adjustment module. The GIS map display module is used to display the location distribution and overall layout of the monitoring point equipment of each monitoring point geographic information output module; the GIS map adjustment module is used to receive the map sent by the monitoring point geographic information output module and the monitoring point fault geographic information output module in real time information. Using GIS services, the global layout of the power distribution network is stored in the memory, and then the updated global layout is generated according to the continuous update of the power distribution equipment, and the location information can be transmitted to the user's mobile phone terminal for the user's use and reference. Real-time display of geographic location. The distribution automation master station 3 further includes an audible and electric alarm and an LCD display. When abnormal status information is received, the alarm mode is turned on to remind the operation and maintenance personnel to detect and deal with it in time.

The intelligent terminal 1 adopts short-circuit and ground fault, adopts the waveform judgment method, which can effectively avoid false alarms caused by heavy load operation and closing surge. When a short-circuit fault occurs, the fault current value and occurrence time can be recorded and sent to the background of the distribution automation master station 3 in real time. The failure analysis function of the distribution automation master station 3 can accurately indicate the fault location.

In the utility model, the data acquisition unit transmits the collected data to the data processing unit, and the data processing unit uploads the data to the data concentrator, thereby realizing the remote communication between the data concentrator and the intelligent terminals of each monitoring point. The data concentrator transmits the information to the main station of distribution automation through the mobile APN network of GPRS/4G. After the data collected by the intelligent terminal is connected to the main station of distribution automation, it will realize the 10 thousand functions of real-time monitoring, fault identification and positioning. The voltage distribution automation system extends to the low-voltage distribution station area, so that the intelligent terminal in the low-voltage station area can be effectively combined with the high-voltage distribution automation system, etc., to solve the problem of "blind adjustment" in the low-voltage distribution station area, to allocate resources reasonably, and to The electrical equipment can be maintained and repaired in a timely manner, supporting the operation and emergency repair work of the low-voltage distribution station area, and can quickly locate the fault location, greatly shortening the fault handling time, and improving the reliability of power consumption in the low-voltage distribution station area.

It should be noted that the above-mentioned embodiment is an illustration of the technical solution of the utility model rather than a limitation, equivalent replacements by those of ordinary skill in the art or other modifications made according to the prior art, as long as they do not exceed the thinking of the technical solution of the utility model and scope should be included in the scope of rights required by the utility model.

Claims (10)

1. a kind of low-voltage platform area intelligent monitor system for monitoring the related data of low-voltage platform area in real time, and data is passed in time Transport to backstage, which is characterized in that including:

It is separately positioned on the intelligent terminal, data concentrator and power distribution automation master of each monitoring point of low-voltage platform area distribution network It stands；

The intelligent terminal is by data acquisition unit, data processing unit and data memory cell group into the data acquisition is single Member is electrically connected respectively with the data processing unit, data storage cell；

The data concentrator includes RS485 interfaces and APN network servers, is connected using the RS485 interfaces and intelligent terminal It connects, realizes real-time, the telecommunication of the data concentrator and intelligent terminal, and the mobile APN networks for passing through GPRS/4G will be believed Breath is transmitted to the power distribution automation main station.

A kind of 2. low-voltage platform area intelligent monitor system as described in claim 1, which is characterized in that the data acquisition unit packet It includes：Potential device data acquisition module, supply line's data acquisition module, breaker data acquisition module, disconnecting switch data Acquisition module, earthing switch data acquisition module, fire alarm data acquisition module.

A kind of 3. low-voltage platform area intelligent monitor system as claimed in claim 1 or 2, which is characterized in that the related data packets Include voltage, electric current and on off state.

A kind of 4. low-voltage platform area intelligent monitor system as described in claim 1, which is characterized in that the data processing unit packet Include low-pass filter, signal amplifier, photoisolator and driving buffer circuit, the input terminal of the low-pass filter with it is described The output terminal connection of each acquisition module, the output terminal of the low-pass filter and the signal amplifier in data acquisition unit Input terminal connects, and the output terminal of the signal amplifier is connect with the input terminal of the photoisolator, the photoisolator Output terminal with it is described driving buffer circuit input terminal connect, it is described driving buffer circuit output terminal and the data set in The input terminal connection of device.

5. a kind of low-voltage platform area intelligent monitor system as described in claim 1, which is characterized in that the data storage cell is Flash storage.

6. a kind of low-voltage platform area intelligent monitor system as described in claim 1, which is characterized in that the data concentrator also wraps Memory module connected to it is included, is used to store the data concentrator according to the acquisition of each acquisition module of the intelligent terminal Data generation abnormal state information.

A kind of 7. low-voltage platform area intelligent monitor system as described in claim 1, which is characterized in that the power distribution automation main station Module is adjusted equipped with GIS map display module and GIS map.

8. a kind of low-voltage platform area intelligent monitor system as described in claim 1, which is characterized in that the monitoring system includes strong Power magnet, the intelligent terminal are mounted on by the strong magnets on the controller switching equipment of low-voltage platform area.

A kind of 9. low-voltage platform area intelligent monitor system as described in claim 1, which is characterized in that the power distribution automation main station Including acoustic-electric alarm and LCD display.

10. a kind of low-voltage platform area intelligent monitor system as described in claim 1, which is characterized in that the intelligent terminal includes Power module.