CN113310524A - Transformer substation direct current system on-line monitoring system based on 5G communication technology - Google Patents
Transformer substation direct current system on-line monitoring system based on 5G communication technology Download PDFInfo
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Abstract
本发明涉及一种基于5G通讯技术的变电站直流系统在线监测系统，包括监测中心、移动终端、无线信息集中器、5G基站和多个信息采集模块，信息采集模块设置在各个变电站内，5G基站发送和接收5G通讯信号，信息采集模块采集每个变电站直流系统的状态信息后通过无线局域网发送至无线信息集中器，无线信息集中器汇总设定区域内所有变电站直流系统的状态信息后通过5G通讯信号发送至监测中心，移动终端无线连接监测中心。与现有技术相比，本发明通过5G通讯技术将现场采集的直流供电设备信息，传输到远方监测中心，并利用移动终端实现对信息的实时监控和处理，无需额外布线，降低建设成本，便于维护和使用。
The invention relates to an on-line monitoring system of a substation DC system based on 5G communication technology, comprising a monitoring center, a mobile terminal, a wireless information concentrator, a 5G base station and a plurality of information collection modules. The information collection modules are arranged in each substation, and the 5G base station sends The information collection module collects the status information of each substation DC system and sends it to the wireless information concentrator through the wireless local area network. The wireless information concentrator summarizes the status information of all substation DC systems in the set area and transmits the 5G communication signal. Send to the monitoring center, and the mobile terminal wirelessly connects to the monitoring center. Compared with the prior art, the present invention transmits the DC power supply equipment information collected on site to the remote monitoring center through the 5G communication technology, and realizes the real-time monitoring and processing of the information by using the mobile terminal, no additional wiring is required, the construction cost is reduced, and the construction cost is convenient. maintenance and use.
Description
Technical Field
The invention relates to the field of online monitoring, in particular to a transformer substation direct current system online monitoring system based on a 5G communication technology.
Background
With the continuous development of computer technology, network communication technology and data acquisition and control technology, the automatic operation level of the transformer substation is higher and higher. Meanwhile, online monitoring of the operation condition of the power system equipment is also increasingly necessary. The construction of the online monitoring of the direct current power supply equipment of the transformer substation can improve the current production management mode of the direct current system, and promote safe operation management and convenient maintenance. The real-time fault processing timeliness can be improved, the optimization of various production business processes is realized, and the dual improvement of the management efficiency and the benefit is finally achieved.
In recent years, in the field of online monitoring of power systems, few documents are related to online monitoring of a direct current system of a transformer substation, and a general design idea is to connect distributed devices into one data acquisition device in a wired mode and send acquired data information into an open database, so that running state information of the devices can be analyzed and processed in a centralized mode in time. For example, documents "research and development and application of an alternating current and direct current online monitoring system of a transformer substation", "intelligent monitoring management system concept of a direct current system of a transformer substation", and the like, only research on acquisition and analysis of information of each device, and information transmission methods thereof are all information transmission in a wired manner, so that the receiving of information of a remote monitoring center has the defects of high construction cost, difficulty in wiring and great maintenance difficulty.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide an online monitoring system of a substation direct current system based on a 5G communication technology.
The purpose of the invention can be realized by the following technical scheme:
the utility model provides a transformer substation direct current system on-line monitoring system based on 5G communication technology, includes monitoring center, mobile terminal, wireless information concentrator, 5G basic station and a plurality of information acquisition module, and information acquisition module sets up in each transformer substation, 5G basic station sends and receives 5G communication signal, information acquisition module gathers and sends to wireless information concentrator through wireless LAN behind every transformer substation direct current system's the status information, wireless information concentrator gathers and sets for and sends to monitoring center through 5G communication signal behind the status information of all transformer substation direct current systems in the region, mobile terminal wireless connection monitoring center acquires the status information of setting for every transformer substation direct current system in the region in real time.
Furthermore, the information acquisition module comprises a controller, an A/D board card and a communication board which are connected with the controller, a current sensor, a voltage sensor, a temperature sensor and a humidity sensor which are connected with the A/D board card, and a wireless local area network transmission unit is arranged on the communication board.
Further, the wireless connection mode of the mobile terminal and the monitoring center is 5G, WiFi, 4G, GPRS or ZigBee wireless connection.
Further, the monitoring center performs the following steps: receiving the state information of all the substation direct current systems in the set area sent by the wireless information concentrator, judging whether the state information exceeding the set value exists, and if so, pushing related state information alarm to the mobile terminal.
Furthermore, the information acquisition module obtains analog quantity through a current sensor, a voltage sensor, a temperature sensor and a humidity sensor, obtains digital quantity through A/D conversion, and obtains specific numerical value through a table look-up program.
Further, in the information acquisition module, the acquired voltage signal and current signal obtain a maximum value and an effective value through Fourier transform, and then are packaged and transmitted to the wireless information concentrator according to a communication protocol.
Furthermore, the online monitoring system is monitored through monitoring software arranged in the monitoring center, the monitoring software is operated through a mobile terminal, a graphical interface is displayed in the mobile terminal, and the state information of each substation direct current system is displayed through the graphical interface.
Furthermore, each parameter of the state information is provided with a dial plate and a digital display frame for displaying the parameter.
Furthermore, an indicator light is arranged on one side of the digital display frame of each parameter, and when the parameter is in the threshold range, the parameter is displayed as green, and when the parameter is out of the threshold range, the parameter is displayed as red.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the invention, the 5G base station is arranged in the set area to replace the traditional cable connection mode, and the data is collected by the wireless information concentrator and finally transmitted to the monitoring center, namely, the information of the direct current power supply equipment acquired on site is transmitted to the remote monitoring center by the 5G communication technology, and the real-time monitoring and processing of the information are realized by using the mobile terminal, so that additional wiring is not needed, the construction cost is reduced, and the maintenance and the use are convenient.
2. The invention realizes the functions of field data receiving, data analysis and state display in the monitoring center through software, the software is operated through the mobile terminal, the operation interface is provided with the dial plate, the digital display frame and the indicating lamp, the monitoring information can be simply and concisely displayed, the functions are rich, and the operation is convenient.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic view of a monitoring display interface of the mobile terminal.
Fig. 3 is a schematic diagram of a data export interface of the mobile terminal.
Fig. 4 is a schematic diagram of an implementation flow of the monitoring software.
Reference numerals: 1-monitoring center; 2-a mobile terminal; 3-a wireless information concentrator; 4-5G base stations; 5-an information acquisition module; 51-a controller; 52-A/D board card; 53-communication board; 54-a current sensor; 55-a voltage sensor; 56-temperature sensor; 57-humidity sensor.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments. The present embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.
As shown in fig. 1, the embodiment provides a transformer substation direct current system online monitoring system based on a 5G communication technology, which includes a monitoring center 1, a mobile terminal 2, a wireless information concentrator 3, a 5G base station 4, and a plurality of information acquisition modules 5. The information acquisition module 5 is arranged in each transformer substation, and the information acquisition module 5 comprises a controller 51, an A/D board 52 and a communication board 53 which are connected with the controller 51, and a current sensor 54, a voltage sensor 55, a temperature sensor 56 and a humidity sensor 57 which are connected with the A/D board 52. The communication board 53 is provided with a wireless lan transmission unit, so that each information collection module 5 is connected to the wireless information concentrator 3 through a wireless lan. The 5G base station 4 transmits and receives 5G communication signals. The wireless information concentrator 3 is connected with the detection center through a 5G communication signal. The mobile device is a conventional smart phone or a conventional mobile computer, is provided with software inside, and is connected with the monitoring center 1 in a conventional wireless connection mode, such as wireless connection modes of 5G, WiFi, 4G, GPRS or ZigBee. The working principle of the embodiment is as follows: the information acquisition module 5 acquires the state information of each transformer substation direct current system and then sends the state information to the wireless information concentrator 3 through the wireless local area network; the wireless information concentrator 3 collects the state information of all the substation direct current systems in the set area and then sends the state information to the monitoring center 1 through 5G communication signals. The mobile terminal 2 is in wireless connection with the monitoring center 1, acquires the state information of each transformer substation direct current system in a set area in real time, and operates monitoring software in the monitoring center 1.
That is to say, the on-line monitoring system of the direct current system of the transformer substation mainly comprises three parts:
and a field information acquisition part. The method comprises the following steps of collecting monitoring variables by using a sensor with voltage, current, temperature and humidity sensing and collecting capabilities, and transmitting the monitoring variables to an information concentrator with an information packaging function and capable of transmitting 5G communication signals through a wireless local area network;
and a communication transmission section. The 5G base station is used for receiving the on-site direct current power supply equipment state information sent by the information concentrator and transmitting the on-site direct current power supply equipment state information to a remote monitoring center;
the central portion is monitored. And the monitoring center receives the relevant equipment state information uploaded on site through the 5G base station and stores the information. Then, through developed special information processing software, the collected monitoring data is analyzed, processed and judged, and the instant state information of the field equipment is displayed in an equipment position arrangement map preset in a database. When the monitored equipment is found to be abnormal, the operation can be carried out by remotely issuing a control command, and the polling personnel is informed to rapidly arrive at the site for disposal.
The monitoring software of the on-line monitoring system of the direct current system of the transformer substation is developed as follows:
firstly, the function is to complete information analysis and processing software which is arranged on a monitoring center computer and has the functions of receiving the state information of the field equipment, analyzing and judging the state of the field equipment, sending a command to the field equipment and informing patrolmen when necessary. The method comprises the following steps that five modules of 'communication setting', 'monitoring parameter setting', 'real-time monitoring instrument', 'real-time monitoring curve' and 'data export' are shared on a monitoring interface displayed on the mobile terminal, and functions of setting a communication port, setting an information extraction interval, displaying equipment state information in a digital mode and the like can be achieved; the time can also be used as an abscissa to draw a curve of the temperature of the equipment and the temperature of the surrounding environment.
(1) Communication setting module
Selecting a communication port: the communication ports such as Ethernet, RS485, TYPE, C and the like can be selected by clicking different tabs; selecting a communication mode: 5G, WiFi outside 5G, 4G full-network communication, GPRS, ZigBee and other communication modes can be selected by clicking different tabs; the software will automatically read the serial port identified by the user's computer to set the optional serial port.
(2) Monitoring parameter setting module
The maximum/minimum value of the monitoring parameter is allowed to be set by a user, and the realization of the subsequent parameter out-of-limit warning function is facilitated.
(3) Real-time monitoring instrument module
As shown in fig. 2, each parameter of the status information is provided with a dial and a digital display frame for displaying the parameter. And an indicator light is arranged on one side of the digital display frame of each parameter, and when the parameter is in the threshold range, the parameter is displayed as green, and when the parameter is out of the threshold range, the parameter is displayed as red. The module allows a user to view real-time changes of the parameters from the instrument corresponding to each monitoring parameter, and acquire real-time values of the parameters from the corresponding text box, if the parameters are out of limit, the corresponding indicator light turns from green to red so as to warn the user.
(4) Real-time monitoring curve module
And allowing a user to check a real-time change curve of a certain monitoring parameter, if the user needs to derive a real-time image of the certain monitoring parameter, firstly selecting the required parameter in a drop-down box, and deriving the monitoring image at a certain moment into an image in a JPG (joint mark display), PNG (public network graph), TIF (TIF) or PDF (Portable document Format) format through an image derivation function built in the MATLAB.
(5) Data export module
The layout specifically shown in fig. 3 allows a user to derive historical data for one or more monitoring parameters, and the user can select at his or her discretion the time period for which the data is derived, and the format of the data, 24 points a day or 48 points a day. After clicking the export button, the user can set the name and the storage address of the export Excel file.
Secondly, the control process of the monitoring software is as follows:
the user can trigger various setting subprogram modules of the software through interface operation. After finishing the communication setting and the monitoring parameter setting, the real-time information of the direct current system of the transformer substation can be received by opening the communication connecting switch, and if the equipment state is normal, the corresponding state indicator lamp displays green; if the system information is abnormal, displaying red; if the connection is broken, the connection filling indicator lamp displays yellow.
The monitoring software judges whether various information is normal in real time, if the information is abnormal, an information sending mechanism is triggered, a control command is sent to the site, abnormal equipment is quitted from running, and inspection personnel are informed to check on the site.
The software allows the user to pause the monitoring under the condition of continuously opening the communication connection, and the function can be realized by clicking a 'pause monitoring' button; if the monitoring needs to be continued, the button is clicked again, and the name of the button is 'monitoring continuing'.
The user can directly obtain the real-time value, the daily mean value, the daily maximum value and the daily minimum value of each monitoring parameter from the beginning of communication connection to the present on the software interface
If the user needs to quit the system, the communication connection needs to be disconnected, otherwise, a corresponding prompt box is led out; if the communication connection is disconnected, the user can successfully log out of the system.
The specific operation flow of the software is shown in fig. 4:
A. initialization
1) Setting a communication interface as TPYE-C;
2) the communication mode is set to be 5G.
B. Communication parameter setting
1) Changing a communication interface;
2) setting a baud rate;
3) whether a stop bit is set, and a check bit.
C. Monitoring parameter settings
Setting alarm threshold setting values of a voltage value, a current value, a temperature value and a humidity value, sending an alarm signal by a monitoring center when the setting values are reached, displaying the alarm signal by yellow through an indicator lamp, and automatically sending information to an inspection attendant.
D. Received field data
And receiving a voltage value, a current value, a temperature value and a humidity value of a monitoring point measured by the field sensor.
E. Parameters of field state
The state parameters of the field equipment are transmitted to the information acquisition module 5 group through each special measuring sensor on the field, then A/D conversion is carried out, and after the digital quantity is received by the information module group, the temperature and the humidity obtain specific numerical values through a table look-up program. The voltage and the current obtain the maximum value and the effective value through Fourier transformation. And then the data is packaged and transmitted to an information concentrator according to a communication protocol, and then is transmitted to a monitoring center through a 5G information module.
F. Device status information acquisition
The monitoring center can analyze the related information of the equipment from the information transmitted from the site through a transmission protocol, wherein the related information specifically comprises a voltage value, a current value, a temperature value and a humidity value. And when the preset alarm setting value is reached, displaying the alarm setting value on a control interface and automatically sending information to the inspection attendant.
G. Various device status information displays
When the monitoring center software judges that equipment has a fault or is about to have a fault, the equipment is clearly displayed in a prestored equipment map and is sent to a maintainer so as to rapidly and accurately process the fault equipment.
The software control process is as follows:
1. the user can trigger various setting subprograms of the software through interface operation. After finishing the communication setting and the monitoring parameter setting, the real-time information of the direct current system of the transformer substation can be received by opening the communication connecting switch, and if the equipment state is normal, the corresponding state indicator lamp displays green; if the system information is abnormal, displaying red; if the connection is broken, the connection filling indicator lamp displays yellow.
2. The monitoring software judges whether various information is normal in real time, if the information is abnormal, an information sending mechanism is triggered, a control command is sent to the site, abnormal equipment is quitted from running, and inspection personnel are informed to check on the site.
3. The software allows the user to pause the monitoring under the condition of continuously opening the communication connection, and the function can be realized by clicking a 'pause monitoring' button; if the monitoring needs to be continued, the button is clicked again, and the name of the button is 'monitoring continuing'.
4. The user can directly obtain the real-time value, the daily mean value, the daily maximum value and the daily minimum value of each monitoring parameter from the beginning of communication connection to the present on the software interface
5. If the user needs to quit the system, the communication connection needs to be disconnected, otherwise, a corresponding prompt box is led out; if the communication connection is disconnected, the user can successfully log out of the system.
The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.
Claims (9)
1. A transformer substation direct current system online monitoring system based on a 5G communication technology is characterized by comprising a monitoring center (1), a mobile terminal (2), a wireless information concentrator (3), a 5G base station (4) and a plurality of information acquisition modules (5), wherein the information acquisition modules (5) are arranged in each transformer substation, the 5G base station (4) sends and receives 5G communication signals, the information acquisition module (5) acquires the state information of each transformer substation direct current system and then sends the state information to the wireless information concentrator (3) through a wireless local area network, the wireless information concentrator (3) collects the state information of all the direct current systems of the transformer substations in the set area and then sends the state information to the monitoring center (1) through 5G communication signals, the mobile terminal (2) is in wireless connection with the monitoring center (1) and acquires the state information of each transformer substation direct current system in a set area in real time.
2. The transformer substation direct current system online monitoring system based on the 5G communication technology is characterized in that the information acquisition module (5) comprises a controller (51), an A/D board (52) and a communication board (53) which are connected with the controller (51), a current sensor (54), a voltage sensor (55), a temperature sensor (56) and a humidity sensor (57) which are connected with the A/D board (52), and a wireless local area network transmission unit is arranged on the communication board (53).
3. A substation direct current system on-line monitoring system based on 5G communication technology according to claim 1, characterized in that the wireless connection mode of the mobile terminal (2) and the monitoring center (1) is 5G, WiFi, 4G, GPRS or ZigBee wireless connection.
4. The on-line monitoring system for the substation direct current system based on the 5G communication technology according to the claim 1 is characterized in that the following steps are executed in the monitoring center (1): receiving the state information of all the substation direct current systems in the set area sent by the wireless information concentrator (3), judging whether the state information exceeding the set value exists, and if so, pushing related state information alarm to the mobile terminal (2).
5. The transformer substation direct current system online monitoring system based on the 5G communication technology as claimed in claim 4, wherein the information acquisition module (5) obtains analog quantity through a current sensor (54), a voltage sensor (55), a temperature sensor (56) and a humidity sensor (57), then obtains digital quantity through A/D conversion, and then obtains specific numerical value through a table look-up program.
6. The on-line monitoring system for the direct current system of the transformer substation based on the 5G communication technology as claimed in claim 1, wherein in the information acquisition module (5), the acquired voltage signal and current signal are subjected to Fourier transform to obtain a maximum value and an effective value, and then are packaged and transmitted to the wireless information concentrator (3) according to a communication protocol.
7. The on-line monitoring system of the substation direct current system based on the 5G communication technology as claimed in claim 1, wherein the on-line monitoring system is monitored through monitoring software arranged in a monitoring center, the monitoring software is operated through a mobile terminal (2), a graphical interface is displayed in the mobile terminal (2), and the status information of each substation direct current system is displayed through the graphical interface.
8. The on-line monitoring system for the direct current system of the transformer substation based on the 5G communication technology as claimed in claim 1, wherein each parameter of the state information is provided with a dial plate and a digital display frame for displaying the parameter.
9. The on-line monitoring system for the direct current system of the transformer substation based on the 5G communication technology as claimed in claim 8, wherein an indicator lamp is arranged on one side of a digital display frame of each parameter, and when the parameter is within a threshold range, the parameter is displayed in green, and when the parameter is outside the threshold range, the parameter is displayed in red.
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| CN116133045A (en) * | 2023-02-09 | 2023-05-16 | 深圳中云通信技术有限公司 | Relay protection communication system and communication method based on 5G communication |
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