CN213484587U - Intelligent sensor for monitoring low-voltage power distribution network - Google Patents
Intelligent sensor for monitoring low-voltage power distribution network Download PDFInfo
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- CN213484587U CN213484587U CN202022882839.6U CN202022882839U CN213484587U CN 213484587 U CN213484587 U CN 213484587U CN 202022882839 U CN202022882839 U CN 202022882839U CN 213484587 U CN213484587 U CN 213484587U
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Abstract
The utility model discloses an intelligent sensor for monitoring a low-voltage distribution network, which comprises an MCU unit, a power supply and energy storage unit, an electricity metering unit and a first communication unit, wherein the power supply and energy storage unit is respectively connected with the MCU unit, the electricity metering unit and the first communication unit and is used for providing electric energy required by work for the MCU unit, the electricity metering unit and the first communication unit, the MCU unit is respectively communicated with the electricity metering unit and the first communication unit, the electricity metering unit is used for monitoring the voltage/current and harmonic signals of the low-voltage distribution network and sending the voltage/current and harmonic information to the MCU unit, the MCU unit is used for receiving the voltage/current and harmonic signals and sending the voltage/current and harmonic signals to a remote terminal through the first communication unit, thereby realizing the line monitoring of the low-voltage distribution network and timely acquiring the voltage/current and harmonic signals of different levels of the low-voltage distribution network, and the power supply service level of the user is improved.
Description
Technical Field
The utility model relates to a technical field of net monitoring is joined in marriage to the low pressure, especially relates to an intelligent perceptron for monitoring of low-voltage distribution network.
Background
The low-voltage distribution network is used as the last kilometer of the power supply service, the power supply service function of a user is directly undertaken, and the power supply quality of the user is directly influenced by the operation management level of the low-voltage distribution network. With the improvement of the power supply service requirement, the low-voltage power distribution station area is required to be intelligentized and in an internet of things manner, and lean management requirements are supported. In recent two years, small-scale collection of low-voltage user power consumption information is realized by replacing an HPLC (high-speed power line carrier) communication module by an electric energy meter and a concentrator, but the accuracy rate is low for reporting power failure information of the user meter, and real-time monitoring of a line of a transformer area cannot be realized, so that how to realize real-time monitoring of a low-voltage distribution network line becomes a technical problem to be solved urgently by technical personnel in the field.
SUMMERY OF THE UTILITY MODEL
The utility model provides an intelligent perception ware for monitoring of low voltage distribution network for solve the unable realistic technical problem of real-time supervision of low voltage distribution network line among the prior art.
In order to solve the technical problem, the utility model provides a technical scheme does:
an intelligent sensor for monitoring a low-voltage distribution network comprises an MCU unit, a power supply and energy storage unit, an electric quantity metering unit and a first communication unit, the power supply and energy storage unit is respectively connected with the MCU unit, the electric quantity metering unit and the first communication unit, is used for providing electric energy required by the work for the MCU unit, the electric quantity metering unit and the first communication unit, the MCU unit establishes communication with the electric quantity metering unit and the first communication unit respectively, the electric quantity metering unit is used for monitoring voltage/current and harmonic signals of the low-voltage distribution network, and transmitting the voltage/current and harmonic information to the MCU unit, the MCU unit being configured to receive the voltage/current and harmonic signals, and transmitting the voltage/current and harmonic signals to a remote terminal through the first communication unit.
Preferably, the power distribution network further comprises a remote signaling input unit, the remote signaling input unit is communicated with the MCU unit, the remote signaling input unit is used for acquiring switching value signals of electrical equipment of the power distribution network and sending the switching value signals to the MCU unit, and the MCU unit is used for receiving the switching value signals and sending the switching value signals to a remote terminal through the first communication unit.
Preferably, the intelligent sensor further comprises a position information unit, the position information unit is communicated with the MCU unit, the position information unit is used for collecting the position information of the intelligent sensor and sending the position information to the MCU unit, and the MCU unit is used for receiving the position information and sending the position information to a remote terminal through the first communication unit.
Preferably, the intelligent sensor also comprises a temperature monitoring unit, wherein the temperature monitoring unit is communicated with the MCU unit, the temperature monitoring unit is used for acquiring the ambient temperature information of the intelligent sensor and sending the ambient temperature information to the MCU unit, and the MCU unit is used for receiving the ambient temperature information and sending the ambient temperature information to the remote terminal through the first communication unit.
Preferably, the power distribution system further comprises a second communication unit, the second communication unit is communicated with the MCU unit, the second communication unit is used for being communicated with an intelligent switch/acquisition module/adjusting device on the power distribution network, receiving a state signal/acquisition signal sent by the intelligent switch/acquisition module/adjusting device and sending the state signal/acquisition signal to the MCU unit, and the MCU unit is used for sending the state signal/acquisition signal to a remote terminal through the first communication unit.
Preferably, the power supply and energy storage device further comprises a display unit, the display unit is connected with the power supply and energy storage unit and is communicated with the MCU unit, and the MCU unit is further used for sending one or a combination of any more of received voltage/current and harmonic signals, switching value signals, position information, environment temperature information and state signals/collected signals to the display unit for display.
Preferably, the device also comprises a storage unit, the storage unit is communicated with the MCU unit, and the MCU unit is used for transmitting one or any combination of the received voltage/current and harmonic signals, switching value signals, position information, environment temperature information and state signals/acquisition signals to the storage unit for storage.
Preferably, the system further comprises an encryption unit, wherein the encryption unit is connected with the MCU unit and used for encrypting signals sent to the remote terminal in the power distribution network by the MCU unit through the first communication unit.
Preferably, the first communication unit includes one or a combination of any several of a carrier communication unit, a bluetooth communication unit, and a wireless communication unit.
Preferably, the second communication unit comprises an RS232 communication unit/an RS485 communication unit.
The utility model discloses following beneficial effect has:
1. the utility model provides an intelligent perceptron for monitoring of low voltage distribution network, including MCU unit, power supply and energy storage unit, electric quantity metering unit and first communication unit, power supply and energy storage unit respectively with MCU unit, electric quantity metering unit and first communication unit are connected for provide the required electric energy of work for MCU unit, electric quantity metering unit and first communication unit, MCU unit respectively with electric quantity metering unit and first communication unit establish communication, electric quantity metering unit is used for monitoring the voltage/electric current and the harmonic signal of low voltage distribution network, and will the voltage/electric current and harmonic information send for MCU unit, MCU unit is used for receiving the voltage/electric current and harmonic signal, and will the voltage/electric current and harmonic signal send remote terminal through first communication unit, therefore, line monitoring of the low-voltage distribution network is achieved, voltage/current and harmonic signals of different levels of the low-voltage distribution network are obtained in time, and the power supply service level of a user is improved.
2. In a preferred scheme, the utility model discloses from electrified volume metering function, configuration encryption module, configuration position information unit can carry out transformer oil temperature monitoring simultaneously, gathers circuit switch state, line voltage current information, environment humiture information etc. makes the low pressure join in marriage net platform district and has possessed holographic perception ability, makes managers can master the running state of transformer, switch, circuit in the platform district in real time; the segmented line loss can be calculated, and lean management of a support platform area can be realized; when a power supply fault occurs in the transformer area, the fault troubleshooting range can be reduced, and the fault first-aid repair efficiency is improved; the power supply abnormal condition of the transformer area can be pre-warned, active maintenance is guided, and the power supply service level is improved.
In addition to the above-described objects, features and advantages, the present invention has other objects, features and advantages. The present invention will be described in further detail below with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification. In the drawings:
fig. 1 is a schematic structural diagram of an intelligent sensor for monitoring a low-voltage distribution network according to a second preferred embodiment of the present invention;
fig. 2 is a schematic diagram of a first part of an MCU unit in a second preferred embodiment of the present invention;
fig. 3 is a schematic diagram of a second part of the MCU unit in the second preferred embodiment of the present invention;
fig. 4 is a schematic diagram of a third part of an MCU unit in the second preferred embodiment of the present invention;
fig. 5 is a schematic diagram of a power supply and energy storage unit according to a second preferred embodiment of the present invention;
fig. 6 is a schematic diagram of an RS485 communication unit in the second preferred embodiment of the present invention;
fig. 7 is a schematic diagram of a bluetooth communication unit according to a second preferred embodiment of the present invention;
fig. 8 is a schematic diagram of a temperature monitoring unit according to a second preferred embodiment of the present invention;
fig. 9 is a schematic diagram of an electricity metering unit according to a second preferred embodiment of the present invention;
fig. 10 is a schematic diagram of a location information unit according to a second preferred embodiment of the present invention;
fig. 11 is a schematic diagram of a memory cell according to a second preferred embodiment of the present invention;
fig. 12 is a schematic diagram of a wireless communication unit according to a second preferred embodiment of the present invention;
fig. 13 is a schematic diagram of a carrier communication unit according to a second preferred embodiment of the present invention;
fig. 14 is a schematic diagram of a display unit according to a second preferred embodiment of the present invention;
fig. 15 is a schematic diagram of an ESAM unit according to a second preferred embodiment of the present invention;
fig. 16 is a schematic diagram of a remote signaling input unit according to a second preferred embodiment of the present invention.
Detailed Description
The embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways as defined and covered by the claims.
The first embodiment is as follows:
the utility model discloses an intelligent sensor for monitoring a low-voltage distribution network, which comprises an MCU unit, a power supply and energy storage unit, an electric quantity metering unit and a first communication unit, the power supply and energy storage unit is respectively connected with the MCU unit, the electric quantity metering unit and the first communication unit, is used for providing electric energy required by the work for the MCU unit, the electric quantity metering unit and the first communication unit, the MCU unit establishes communication with the electric quantity metering unit and the first communication unit respectively, the electric quantity metering unit is used for monitoring voltage/current and harmonic signals of the low-voltage distribution network, and transmitting the voltage/current and harmonic information to the MCU unit, the MCU unit being configured to receive the voltage/current and harmonic signals, and transmitting the voltage/current and harmonic signals to a remote terminal through the first communication unit.
The intelligent sensor for monitoring the low-voltage distribution network in the embodiment can realize line monitoring of the low-voltage distribution network, timely acquire voltage/current and harmonic signals of different levels of the low-voltage distribution network, and improve the power supply service level of a user.
Example two:
the second embodiment is the preferred embodiment of the first embodiment, and the difference between the second embodiment and the first embodiment is that the structure and the function of the intelligent sensor for monitoring the low-voltage distribution network are expanded:
for realizing the holographic perception of transformer side, circuit side, user side in platform district, the utility model provides an intelligent perceptron for low voltage distribution network monitoring installs in the comprehensive switch board (case) of platform district transformer, is qualified for the next round of competitions positions such as each branch node, electric energy meter case, the running state of real-time supervision transformer, the electric quantity information of circuit at all levels (electric quantity information includes voltage, electric current, leakage current etc.), the on-off state of switch at all levels, the power failure information of table case and house table.
As shown in fig. 1, the intelligent sensor for monitoring a low-voltage distribution network in the present embodiment includes the following components: the device comprises an MCU unit, a power supply and energy storage unit, an electric quantity metering unit, a storage unit, a temperature monitoring unit, a wireless communication unit, a carrier communication unit, a position information unit, an RS485 communication unit, a remote signaling input unit, a Bluetooth communication unit, a display unit and an ESAM unit.
The MCU unit is used for processing and controlling information data, and acquiring information such as the switching state, voltage current, leakage current, transformer pile head temperature and the like of an intelligent switch in a power grid through the RS485 communication unit; acquiring state information of a common switch in a power grid through a remote signaling input unit; collecting environmental information such as position, temperature and the like, controlling wireless communication, carrier communication, Bluetooth communication and the like; displaying the collected related information through a display unit; the schematic diagram of the MCU unit is shown in FIG. 2, FIG. 3 and FIG. 4.
The power supply and energy storage unit is used for providing power supplies required by normal operation and storing proper electric energy for each functional unit and circuit of the module, the power supply end of the power supply and energy storage unit is connected with any phase (such as A-N or B-N or C-N) of a node incoming line end (such as a branch box or an incoming line end of a node switch) to be sensed, and two paths of power supplies which are mutually isolated are output through isolation change. One power supply supplies power to the RS485 communication unit and the remote signaling input unit which are externally connected, and the other power supply supplies power to the MCU unit and other functional units. When the power supply end of the device is powered off, the electric energy stored by the built-in energy storage element can still enable the device to maintain a certain working time. The power supply and energy storage unit mainly comprises an AC/DC module U5 (model is LD05-23B05), a power chip U6 (model is TPS796), an energy storage capacitor C22 (super capacitor, also called farad capacitor) and related peripheral elements, and a schematic diagram of the power supply and energy storage unit is shown in fig. 5.
The RS485 communication unit is used for connecting the device with equipment with RS485 interfaces, such as an intelligent switch, an intelligent three-phase imbalance regulator, a transformer temperature collector, an external temperature and humidity monitor and the like in a power distribution network, collecting information such as the switching state, the voltage current, the temperature of a transformer pile head, the temperature and the humidity of the environment and the like of the intelligent switch, and receiving a background instruction to regulate three-phase imbalance. The RS485 communication unit mainly comprises a chip U5 (product model is MAX13085) and a peripheral circuit, in order to strengthen the protection of the MCU unit and other internal units, the RS485 communication unit adopts an independent power supply for power supply, the RS485 communication unit is connected with the MCU unit through a photoelectric coupler, and the schematic diagram is shown in figure 6.
The Bluetooth communication unit is used for debugging, configuring and maintaining the device on site. After the device is put into use, but the installation position is higher or the device is not suitable for being used in an environment of disassembling the cover and wiring, the field maintenance is carried out in a Bluetooth communication mode. The bluetooth interface unit mainly comprises a bluetooth communication module U14, wherein the bluetooth communication module U14 is an HC-05 module of the convergent company and is connected with the MCU unit U8, and the schematic diagram is shown in fig. 7.
The built-in temperature monitoring unit is used for providing the current ambient temperature of the device in real time, and the MCU unit is used for collecting temperature information and reporting the temperature information to the system background at regular intervals. When the environmental temperature is abnormal, the related information can be sent out in time through the wireless communication unit or the carrier communication unit to carry out early warning. A DS18B20 chip U15 is selected for temperature monitoring, a Pin2 Pin of a DS18B20 chip U15 is connected with a Pin67 Pin of a U1, and a schematic diagram of a temperature monitoring unit is shown in FIG. 8.
The position information unit is used for providing position information such as longitude and latitude of the device, and the operation and maintenance personnel can quickly position the device. In order to enhance reliability, the position information unit selects a GPS/Beidou dual-mode positioning module U10 (the product model is GAM-2515-MTBD of GOTOP company), and a Pin1 Pin and a Pin2 Pin of U10 are respectively connected with a Pin46 Pin and a Pin47 Pin of U8. A schematic diagram of the location information unit is shown in fig. 10.
The electric quantity metering unit is used for monitoring current voltage and current harmonic waves and other information of the line and providing information for monitoring the operation state of the power grid line and troubleshooting of the system. The electric quantity metering unit consists of a three-phase metering chip U16 and a related voltage and current sampling circuit. The three-phase metering chip adopts an RN8302B chip of the Minicou, the voltage on the power grid is directly accessed through UA, UB, UC and UN of a connecting terminal XS7, and the current on the power grid is connected with the 1 st pin to the 8 th pin of the connecting terminal XS7 through a current transformer. Pin35, Pin32, Pin33, and Pin34 of U16 are connected to Pin81, Pin82, Pin83, and Pin84 of MCU U8, respectively. The schematic diagram of the electricity metering unit is shown in fig. 9.
The storage unit is used for storing electric quantity information, position information, temperature and humidity information, switch state information, remote signaling input information and the like collected by the device. The memory cell comprises a memory chip U11 (product model is M2456) and a peripheral circuit, wherein a Pin5 Pin and a Pin6 Pin of the U11 are respectively connected with a Pin7 Pin and a Pin80 Pin of the U8. A schematic diagram of a memory cell is shown in fig. 11.
The wireless communication unit is used for enabling the device to communicate with the outside in a wireless mode. The wireless communication unit consists of a wireless module U9 (the product model is G62T20DA (433) of concentrated core microelectronics, Inc.) and an antenna, the wireless module adopts SX1278 of a new generation Lora chip SEMTECH company, and has the characteristics of low power consumption, long transmission distance and strong interference resistance, and the wireless communication unit is connected with the MCU unit U8, and the schematic diagram is shown in FIG. 12.
The carrier communication unit is used for enabling the device to communicate with the outside in a carrier mode. For convenient maintenance, the carrier communication unit adopts an external module, and the device provides an interface. A carrier communication module interface schematic is shown in fig. 13.
The display unit is used for displaying the relevant data of the operation of the power distribution network, such as voltage and current, switching state, temperature and the like, acquired by the sensor, so that the relevant information can be conveniently checked during installation and debugging or field maintenance. The display unit is composed of 128 × 64 dot matrix liquid crystal display modules (model: JLX12864G-378 of crystal union), and is connected with the MCU unit U8, and the schematic diagram is shown in fig. 14.
The ESAM unit is an encryption unit and is used for encrypting relevant instructions and information when the system needs to control equipment running in the power distribution network through the sensor or needs to transmit important information through the sensor. The ESAM unit consists of an ESAM chip and a peripheral circuit, and the ESAM chip is connected with the MCU unit U8. The ESAM cell schematic is shown in fig. 15.
The remote signaling input unit is used for acquiring switching value information of non-intelligent equipment needing to be monitored in the power distribution network. Remote signaling information is isolated by a photoelectric coupler and then input to the MCU U8. A schematic diagram of the remote signaling input unit is shown in fig. 16.
To sum up, the utility model discloses an intelligent sensor for monitoring low voltage distribution network is from electrified volume measurement function, configuration ESAM encryption module, configuration position information unit, can carry out transformer oil temperature monitoring simultaneously, gathers circuit switch state, line voltage current information, environment humiture information etc. makes the low voltage join in marriage net platform district and has possessed holographic sensing ability, makes managers can master the running state of transformer, switch, circuit in the platform district in real time; the segmented line loss can be calculated, and lean management of a support platform area can be realized; when a power supply fault occurs in the transformer area, the fault troubleshooting range can be reduced, and the fault first-aid repair efficiency is improved; the power supply abnormal condition of the transformer area can be pre-warned, active maintenance is guided, and the power supply service level is improved.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. An intelligent sensor for monitoring a low-voltage distribution network is characterized by comprising an MCU unit, a power supply and energy storage unit, an electric quantity metering unit and a first communication unit, the power supply and energy storage unit is respectively connected with the MCU unit, the electric quantity metering unit and the first communication unit, is used for providing electric energy required by the work for the MCU unit, the electric quantity metering unit and the first communication unit, the MCU unit establishes communication with the electric quantity metering unit and the first communication unit respectively, the electric quantity metering unit is used for monitoring voltage/current and harmonic signals of the low-voltage distribution network, and transmitting the voltage/current and harmonic information to the MCU unit, the MCU unit being configured to receive the voltage/current and harmonic signals, and transmitting the voltage/current and harmonic signals to a remote terminal through the first communication unit.
2. The intelligent sensor for monitoring the low-voltage distribution network according to claim 1, further comprising a remote signaling input unit, wherein the remote signaling input unit is in communication with the MCU unit, and is configured to collect switching value signals of electrical equipment of the distribution network and send the switching value signals to the MCU unit, and the MCU unit is configured to receive the switching value signals and send the switching value signals to a remote terminal through the first communication unit.
3. The intelligent sensor for monitoring the low-voltage distribution network according to claim 2, further comprising a position information unit, wherein the position information unit is in communication with the MCU unit, the position information unit is used for collecting position information of the intelligent sensor and sending the position information to the MCU unit, and the MCU unit is used for receiving the position information and sending the position information to a remote terminal through the first communication unit.
4. The intelligent sensor for monitoring the low-voltage distribution network according to claim 3, further comprising a temperature monitoring unit, wherein the temperature monitoring unit is in communication with the MCU unit, the temperature monitoring unit is used for collecting ambient temperature information of the intelligent sensor and sending the ambient temperature information to the MCU unit, and the MCU unit is used for receiving the ambient temperature information and sending the ambient temperature information to a remote terminal through the first communication unit.
5. The intelligent sensor for monitoring a low-voltage distribution network according to claim 4, further comprising a second communication unit, wherein the second communication unit is in communication with the MCU unit, the second communication unit is used for establishing communication with the intelligent switch/acquisition module/regulation device on the distribution network, receiving the status signal/acquisition signal sent by the intelligent switch/acquisition module/regulation device and sending the status signal/acquisition signal to the MCU unit, and the MCU unit is used for sending the status signal/acquisition signal to a remote terminal through the first communication unit.
6. The intelligent sensor for monitoring the low-voltage distribution network according to claim 5, further comprising a display unit, wherein the display unit is connected with the power supply and energy storage unit and establishes communication with the MCU unit, and the MCU unit is further configured to transmit one or a combination of any of the received voltage/current and harmonic signals, switching value signals, position information, ambient temperature information and status signals/collected signals to the display unit for display.
7. The intelligent sensor for monitoring the low-voltage distribution network according to claim 6, further comprising a storage unit, wherein the storage unit is in communication with the MCU unit, and the MCU unit is used for sending one or any combination of the received voltage/current and harmonic signals, switching value signals, position information, environment temperature information and state signals/collected signals to the storage unit for storage.
8. The intelligent sensor for monitoring a low-voltage distribution network according to claim 7, further comprising an encryption unit, wherein the encryption unit is connected with the MCU unit and used for encrypting a signal sent by the MCU unit to a remote terminal in the distribution network through the first communication unit.
9. The intelligent sensor for monitoring the low-voltage distribution network according to claim 8, wherein the first communication unit comprises one or a combination of any of a carrier communication unit, a bluetooth communication unit and a wireless communication unit.
10. The intelligent sensor for monitoring a low-voltage distribution network according to claim 9, wherein the second communication unit comprises an RS232 communication unit/an RS485 communication unit.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114283572A (en) * | 2021-12-21 | 2022-04-05 | 青岛鼎信通讯股份有限公司 | Local miniaturized environment quantity comprehensive acquisition device based on HPLC uplink communication |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114283572A (en) * | 2021-12-21 | 2022-04-05 | 青岛鼎信通讯股份有限公司 | Local miniaturized environment quantity comprehensive acquisition device based on HPLC uplink communication |
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