CN203416050U - Transformer room low-voltage power supply remote real-time monitoring apparatus - Google Patents

Abstract

The utility model relates to a remote real-time monitoring device for low-voltage power supply in a substation room, which belongs to the technical field of low-voltage power supply monitoring devices for a substation room; the technical problem to be solved is: to provide a device with comprehensive functions and capable of real-time remote monitoring of the low-voltage power supply system in a substation room; The technical solution is: a remote real-time monitoring device for low-voltage power supply in the substation room, including an online monitor installed on the power supply line and an information collector installed in the substation room. The online monitor includes: a single-chip computer for the monitor, and a three-phase power meter , CT current acquisition module, monitor temperature sensor, monitor switch sensor, monitor dial switch, monitor power carrier module and monitor power supply module; the utility model is suitable for the electric power sector.

Description

Remote real-time monitoring device for low-voltage power supply in substation room

technical field

The utility model relates to a remote real-time monitoring device for low-voltage power supply in a substation room, belonging to the technical field of low-voltage power supply monitoring devices for a substation room.

Background technique

With the development of science and technology, users' demand for electricity is no longer satisfied with the availability of electricity. Good power supply quality and service level have become an important part of society's requirements for power supply enterprises. The load control of means is gradually transitioning to the direction of scientific power management.

In order to improve the quality of power supply and service level, electric power enterprises need to have a complete power management system on the power consumption side to monitor the operation status of the low-voltage power grid directly related to users in real time, to grasp the operation of the low-voltage distribution network in a timely manner, and to timely respond to power supply needs. The growth of the grid can adjust the load of the power grid, detect and locate grid faults in time, find abnormal power supply and abnormal line loss, and eliminate hidden dangers of power supply. Therefore, it is very necessary for the substation room of the power consumer to have a corresponding monitoring system.

However, due to the late start of related technologies in our country and different levels of development, the existing monitoring equipment appears: ①, complex devices, high failure rate, large installation area, and high operation and maintenance costs; ②, single or non-functional equipment Comprehensive, cannot reflect the operation of power supply lines and electrical equipment; ③, cannot remotely monitor, control and protect power supply lines and electrical equipment; ④, cannot read and analyze historical data at any time; ⑤, directly use the monitoring For the power supply on the power supply line, when the power supply line fails, the monitoring equipment will also stop running; ⑥, the temperature of important equipment connected to the power distribution cabinet cannot be monitored.

To sum up, it is of great significance to design a set of remote real-time monitoring device for low-voltage power supply in substation room with simple structure, comprehensive functions and all-weather remote online monitoring.

Utility model content

The utility model overcomes the shortcomings of the prior art, and the technical problem to be solved is: to provide a device with comprehensive functions and capable of real-time remote monitoring of the low-voltage power supply system of the substation room.

In order to solve the above technical problems, the technical solution adopted by the utility model is: a remote real-time monitoring device for low-voltage power supply in the substation room, including an online monitor installed on the power supply line and an information collector installed in the substation room;

The online monitor includes: a monitor single chip microcomputer, a three-phase electric energy metering chip, a CT current acquisition module, a monitor temperature sensor, a monitor switch sensor, a monitor dial switch, a monitor power carrier module and a monitor power module, The single-chip microcomputer of the monitor is respectively connected with the three-phase electric energy metering chip, the temperature sensor of the monitor, the switching value sensor of the monitor, the dial switch of the monitor and the power carrier module of the monitor, and the signal output terminal of the CT current acquisition module is connected with the above three The signal input terminal of the phase electric energy metering chip is connected, and the power supply module of the monitor supplies power for the entire online monitor;

The information collector includes: a collector microcontroller, a collector temperature sensor, a collector switch sensor, a collector dial switch, a collector power carrier module, a GPRS communication module, a UART module, an EEPROM module, a display control module and a collector Power supply module, the single chip microcomputer of the collector is respectively connected with the temperature sensor of the collector, the switching value sensor of the collector, the dial switch of the collector, the power carrier module of the collector, the GPRS communication module, the UART module, the EEPROM module and the display control module, the said The power supply module of the collector supplies power for the entire information collector; the power carrier module of the monitor and the power carrier module of the collector are connected through a power supply line for communication.

There are multiple online monitors and information collectors.

The UART module is connected with an RJ45 interface module, an RS232 interface module, an RS485 interface module and a USB interface module.

The display control module includes a status indicator light and control buttons.

Both the monitor power module and the collector power module include a commercial power module and a storage battery module.

The single-chip microcomputer of the monitor and the single-chip microcomputer of the collector all adopt the single-chip microcomputer whose model is PLC16LF1823.

The three-phase electric energy metering chip adopts a three-phase electric energy metering chip modeled as ATT7022.

Compared with the prior art, the utility model has the beneficial effects that: the utility model monitors the power quality parameter information and fault information of the power supply line in real time through the online monitor, and sends the collected data to the information of the substation room through the power carrier Collector, the information collector collects the information of the entire power supply line, and can upload it to the monitoring terminal through the GPRS wireless network, achieving all-weather comprehensive monitoring of the low-voltage power supply system of the entire power distribution room, which can meet the needs of various low-voltage power supply systems; the entire The circuit structure is simple, the function is comprehensive, the cost is low, and the practicability is strong.

Description of drawings

Below in conjunction with accompanying drawing, the utility model is described in further detail:

Fig. 1 is the schematic diagram of circuit structure of the present utility model;

Fig. 2 is the circuit structure schematic diagram of on-line monitor in the utility model;

Fig. 3 is the schematic diagram of the circuit structure of the information collector in the utility model;

In the figure: 1 is the online monitor, 2 is the information collector, 3 is the MCU of the monitor, 4 is the three-phase electric energy metering chip, 5 is the CT current acquisition module, 6 is the temperature sensor of the monitor, 7 is the switch sensor of the monitor , 8 is the DIP switch of the monitor, 9 is the power carrier module of the monitor, 10 is the power module of the monitor, 11 is the microcontroller of the collector, 12 is the temperature sensor of the collector, 13 is the switch sensor of the collector, 14 is the dial of the collector code switch, 15 is the collector power carrier module, 16 is the GPRS communication module, 17 is the UART module, 18 is the EEPROM module, 19 is the display control module, 20 is the collector power module, 21 is the RJ45 interface module, 22 is the RS232 interface module, 23 is an RS485 interface module, 24 is a USB interface module, and 25 is a monitoring terminal.

Detailed ways

As shown in Figure 1, the remote real-time monitoring device for low-voltage power supply in the substation room of the utility model includes an online monitor 1 installed on the power supply line and an information collector 2 installed in the substation, the online monitor 1 and the information collector 2 can be more than one. Each low-voltage substation power grid is equipped with at least one information collector 2. The online monitor 1 is installed on each branch of the power supply line to monitor the power quality parameter information of the power supply line in real time. The information collector 2 is installed on the main branch of the substation. on the node.

As shown in Figure 2, the online monitor 1 includes: a monitor microcontroller 3, a three-phase electric energy metering chip 4, a CT current acquisition module 5, a monitor temperature sensor 6, a monitor switch sensor 7, and a monitor dial switch 8. The monitor power carrier module 9 and the monitor power supply module 10, the monitor single-chip microcomputer 3 is respectively connected with the three-phase electric energy metering chip 4, the monitor temperature sensor 6, the monitor switch sensor 7, the monitor dial switch 8 and The monitor power carrier module 9 is connected, the signal output terminal of the CT current acquisition module 5 is connected with the signal input terminal of the above-mentioned three-phase electric energy metering chip 4 , and the monitor power module 10 supplies power for the entire online monitor 1 .

The on-line monitor 1 is encapsulated by a shell, and there is a reset/self-check button on the shell, an indicator light for displaying the operating status of the equipment and the monitored power supply line, a dial switch 8 for the monitor for address setting, and various wiring Column, the above-mentioned CT current acquisition module 5 collects the current information of the power supply line, and sends the collected current information to the three-phase electric energy metering chip 4 through the high-precision resistor divider voltage acquisition circuit, and the three-phase electric energy metering chip 4 outputs electric parameters and electric energy Metering to monitor single-chip microcomputer 3, above-mentioned monitor temperature sensor 6 can have a plurality of, respectively monitor ambient temperature and power supply line temperature, described monitor switch quantity sensor 7 monitors equipment switch state, the information that above-mentioned monitor single-chip microcomputer 3 will collect, Including: ambient temperature, power supply line temperature, equipment switch status, three-phase voltage/current of power supply line, active/reactive power, power factor, frequency, etc., and transmit the information to the information collector 2 through the power carrier module 9 of the monitor At the same time, the information is compared with the power quality standard in the single-chip microcomputer 3 memory of the monitor, and the warning or alarm information is output, and the historical data is scrolled. The power carrier module 9 of the monitor includes a carrier signal coupling circuit, which is connected to the transmitting power amplifier circuit and Receive filter amplifier circuit, two amplifier circuits are connected to the power carrier chip model HLPLCS520F.

As shown in Figure 3, the information collector 2 includes: a collector microcontroller 11, a collector temperature sensor 12, a collector switch sensor 13, a collector dial switch 14, a collector power carrier module 15, and a GPRS communication module 16 , UART module 17, EEPROM module 18, display control module 19 and collector power supply module 20, described collector single-chip microcomputer 11 is respectively connected with collector temperature sensor 12, collector switching value sensor 13, collector dial switch 14, collector The power carrier module 15 , the GPRS communication module 16 , the UART module 17 , the EEPROM module 18 are connected to the display control module 19 , and the collector power module 20 supplies power for the entire information collector 2 .

The power carrier module 9 of the above-mentioned monitor and the power carrier module 15 of the collector are connected through a power supply line for communication, and the information collector 2 sends the collected information to the mobile phone of the monitoring terminal 25 or the power monitoring and maintenance personnel through the above-mentioned GPRS communication module 16, Described UART module 17 is connected with RJ45 interface module 21, RS232 interface module 22, RS485 interface module 23 and USB interface module 24, and above-mentioned information collector 2 can send the information that gathers to monitoring terminal 25 through multiple communication modes, described The display control module 19 includes a status indicator light and a control button, and the status indicator light includes a running status indicator light, a communication indicator light and a power supply indicator light, and the control button includes a reset/self-check button; the monitor power supply module 10 and collector power supply module 20 both include a mains module and a storage battery module, which are powered by dual power supplies. When the power supply line fails and the power is cut off, the storage battery starts to supply power to support the normal operation of the equipment, so that the equipment can normally display faults and read locally. To fetch data, the single-chip microcomputer 3 of the monitor and the single-chip microcomputer 11 of the collector all adopt the single-chip microcomputer model PLC16LF1823, and the three-phase electric energy metering chip 4 adopts the three-phase electric energy metering chip model ATT7022.

When the power supply equipment is running normally, the online monitoring instrument 1 will upload the collected data with time and address marks to the information collector 2 through the power carrier, and the information collector 2 will upload the summarized information to the terminal with the address and time, and at the same time The command can be sent to the information collector 2 through the terminal, and the remote operation of the online monitoring equipment is controlled through the power carrier; when the power supply line fails, the information of the online monitoring instrument 1 is compared with the data stored in the memory, and if the power quality is not good, it will send Warning, if there is a fault, an alarm will be issued, and the information will be uploaded to the information collector 2 while the local display is displayed. The information collector 2 will display the fault warning according to the data uploaded by the multi-channel online monitor and the standard stored in the EEPROM module 18. Or report to the police, and upload this signal to the terminal and short message to inform the line maintenance personnel, the maintenance personnel can check the fault indication information on the spot, and can download the data stored in the EEPROM module 18 through the USB interface module 24 etc. simultaneously, in order to assist maintenance, when When the battery power is low, an alarm signal will be output to remind maintenance personnel to replace the battery in time. At the same time, the warning and alarm information will be displayed on the terminal through the GIS map, and a graph will be drawn according to each parameter, so that relevant personnel can check the operation and maintenance status of the power supply line.

The utility model monitors the power quality parameter information and fault information of the power supply line in real time through the online monitor 1, and sends the collected data to the information collector 2 in the substation room through the power carrier, and the information collector 2 collects the information of the entire power supply line , and can be uploaded to the monitoring terminal 25 through the GPRS wireless network, so as to achieve the all-weather comprehensive monitoring of the low-voltage power supply system of the entire power distribution room, and can meet the needs of various low-voltage power supply systems; the whole circuit structure is simple, the function is comprehensive, and the cost is low. Strong practicality.

Claims (7)

1. transformer room's low-voltage power supply remote real-time monitoring device, is characterized in that: comprise the on-line monitoring instrument (1) being arranged in supply line and the information acquisition device (2) that is arranged on transformer room;

Described on-line monitoring instrument (1) comprising: monitor single-chip microcomputer (3), three-phase electrical energy computation chip (4), CT current acquisition module (5), monitor temperature sensor (6), monitor Boolean value output sensor (7), monitor toggle switch (8), monitor power carrier module (9) and monitor power module (10), described monitor single-chip microcomputer (3) respectively with three-phase electrical energy computation chip (4), monitor temperature sensor (6), monitor Boolean value output sensor (7), monitor toggle switch (8) is connected with monitor power carrier module (9), the signal output part of described CT current acquisition module (5) is connected with the signal input part of above-mentioned three-phase electrical energy computation chip (4), monitor power module (10) is whole on-line monitoring instrument (1) power supply,

Described information acquisition device (2) comprising: collector single-chip microcomputer (11), collector temperature sensor (12), collector Boolean value output sensor (13), collector toggle switch (14), collector power carrier module (15), GPRS communication module (16), UART module (17), EEPROM module (18), display control module (19) and collector power module (20), described collector single-chip microcomputer (11) respectively with collector temperature sensor (12), collector Boolean value output sensor (13), collector toggle switch (14), collector power carrier module (15), GPRS communication module (16), UART module (17), EEPROM module (18) is connected with display control module (19), described collector power module (20) is whole information acquisition device (2) power supply, above-mentioned monitor power carrier module (9) is connected and is carried out communication by supply line with collector power carrier module (15).

2. transformer room according to claim 1 low-voltage power supply remote real-time monitoring device, is characterized in that: described on-line monitoring instrument (1) and information acquisition device (2) all have a plurality of.

3. transformer room according to claim 2 low-voltage power supply remote real-time monitoring device, is characterized in that: described UART module (17) is connected with RJ45 interface module (21), RS232 interface module (22), RS485 interface module (23) and usb interface module (24).

4. transformer room according to claim 3 low-voltage power supply remote real-time monitoring device, is characterized in that: described display control module (19) includes status indicator lamp and control button.

5. transformer room according to claim 4 low-voltage power supply remote real-time monitoring device, is characterized in that: described monitor power module (10) and collector power module (20) have included civil power module and battery module.

6. transformer room according to claim 5 low-voltage power supply remote real-time monitoring device, is characterized in that: it is the single-chip microcomputer of PLC16LF1823 that described monitor single-chip microcomputer (3) and collector single-chip microcomputer (11) all adopt model.

7. transformer room according to claim 5 low-voltage power supply remote real-time monitoring device, is characterized in that: described three-phase electrical energy computation chip (4) adopts the three-phase electrical energy computation chip that model is ATT7022.

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