CN207424169U - The communication multi-functional branch monitoring system of high voltage direct current distribution - Google Patents
The communication multi-functional branch monitoring system of high voltage direct current distribution Download PDFInfo
- Publication number
- CN207424169U CN207424169U CN201721571468.1U CN201721571468U CN207424169U CN 207424169 U CN207424169 U CN 207424169U CN 201721571468 U CN201721571468 U CN 201721571468U CN 207424169 U CN207424169 U CN 207424169U
- Authority
- CN
- China
- Prior art keywords
- communication
- resistance
- capacitance
- module
- circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Abstract
The utility model discloses a kind of communication multi-functional branches of high voltage direct current distribution to monitor system, including control module, on off state monitoring modular, electric quantity monitoring module, insulating monitoring module and communication module, the on off state monitoring modular, electric quantity monitoring module, insulating monitoring module and communication module are electrically connected with control module.To realize the advantages of being monitored to communication with branch various parameters in high voltage direct current distribution system and load operation conditions.
Description
Technical field
The utility model is related to DC distributions to monitor field, and in particular, to a kind of communication more work(of high voltage direct current distribution
It can branch monitoring system.
Background technology
Communication uses suspension power supply technique with high voltage direct current electric power system, considers for distribution system and human-body safety,
It is required that increasing insulating monitoring function, insulation against ground degree is supervised in real time.
At present, most distribution systems only supervise bus insulation degree, if there is the situation of insulation against ground degree reduction,
It can only check each equipment under the busbar in turn with handheld device by administrative staff so that administrative staff's heavy workload, management are difficult
Degree increases.Though separately there are some distribution systems that can carry out insulating monitoring to each branch, need to match, branch functions of modules is single.
Existing communication high voltage direct current distribution there are parameter monitoring it is single the problem of.
Utility model content
The purpose of this utility model is that in view of the above-mentioned problems, propose a kind of communication multi-functional branch of high voltage direct current distribution
Road monitors system, communication is monitored with branch various parameters in high voltage direct current distribution system and load operation conditions with realization excellent
Point.
To achieve the above object, the technical solution adopted in the utility model is：
A kind of communication multi-functional branch monitoring system of high voltage direct current distribution, including control module, on off state monitoring mould
Block, electric quantity monitoring module, insulating monitoring module and communication module, the on off state monitoring modular, electric quantity monitoring module, insulation
Monitoring modular and communication module are electrically connected with control module, the on off state monitoring modular, including dry contact interface circuit
And low-pass filter circuit, control module is transmitted to after the low-pass filtered circuit of dry contact interface circuit received signal, institute
Electric quantity monitoring module is stated, including current detecting interface circuit, divider filter signal processing circuit and multi-channel analog selecting switch electricity
Road, the current detecting interface circuit received signal is successively through divider filter signal processing circuit and multi-channel analog selecting switch
Control module is transmitted to after circuit, the insulating monitoring module is described including insulating monitoring interface circuit and signal processing circuit
Insulating monitoring interface circuit received signal is transmitted to control module, the communication module, including RS485 through signal processing circuit
Interface circuit and communication check and level shifting circuit, the RS485 interface circuits received signal is through communication check and electricity
Control module is transmitted to after flat conversion circuit.
Further, the communication check and level shifting circuit, including RS485 communication chips, the RS485 communications core
Series resistance R113 between the receiver output terminal RO and control module of piece, the driver input end of the RS485 communication chips
DI is connected with control module, series resistance R114 on the differential signal receiving terminal A of the RS485 communication chips, resistance R114 with
Node between the differential signal receiving terminal A of RS485 communication chips is connected ground connection with resistance R112, capacitance C66 and resistance R112
Parallel connection, series resistance R116 on the differential signal transmitting terminal B of the RS485 communication chips, resistance R116 and RS485 communication chips
Differential signal transmitting terminal B between node connect with resistance R117 ground connection, capacitance C67 is in parallel with resistance R117.
Further, the resistance value of the resistance R113 is that the resistance value of 1K Ω, the resistance R112 are 10K Ω, described
The resistance value of resistance R117 is that the capacitance of 10K Ω, the capacitance C66 are 1nF, and the capacitance of the capacitance C67 is 1nF.
Further, the RS485 communication chips use MAX13487 chips.
Further, the low-pass filter circuit, including resistance R1 and capacitance C1, the resistance R1 and capacitance C1 are connected on
Between the anode and ground of DC power supply, the node between the resistance R1 and capacitance C1 is connected with control module.
Further, the resistance value of the resistance R1 is that the capacitance of 10K Ω, the capacitance C1 are 100nF.
The technical solution of the utility model has the advantages that：
The technical solution of the utility model is integrated on off state monitoring, electric quantity monitoring and insulating monitoring function, realizes
To the communication monitoring of branch various parameters and load operation conditions in high voltage direct current distribution system.
Description of the drawings
Fig. 1 is the principle of the multi-functional branch monitoring system of communication high voltage direct current distribution described in the utility model embodiment
Block diagram；
Fig. 2 to Figure 15 is that the multi-functional branch of communication high voltage direct current distribution described in the utility model embodiment monitors system
Electronic circuitry.
Specific embodiment
The preferred embodiment of the utility model is illustrated below in conjunction with attached drawing, it should be understood that described herein excellent
Embodiment is selected to be only used for describing and explaining the present invention, is not used to limit the utility model.
As shown in Figure 1, a kind of communication multi-functional branch monitoring system of high voltage direct current distribution, including control module, switch
State monitoring module, electric quantity monitoring module, insulating monitoring module and communication module, on off state monitoring modular, electric quantity monitoring mould
Block, insulating monitoring module and communication module are electrically connected with control module, on off state monitoring modular, including stem grafting point interface electricity
Road and low-pass filter circuit are transmitted to control module, electricity after the low-pass filtered circuit of dry contact interface circuit received signal
Monitoring modular, including current detecting interface circuit, divider filter signal processing circuit and multi-channel analog selected on-off circuit, electric current
Detection interface circuit received signal is transmitted after divider filter signal processing circuit and multi-channel analog selected on-off circuit successively
To control module, insulating monitoring module, including insulating monitoring interface circuit and signal processing circuit, insulating monitoring interface circuit connects
The signal of receipts is transmitted to control module through signal processing circuit, communication module, including RS485 interface circuits and communication check and
Level shifting circuit, RS485 interface circuits received signal are transmitted to control module after communication check and level shifting circuit.
In preferred embodiment, as shown in figure 5, communication check and level shifting circuit, including RS485 communication chips,
The driver of series resistance R113, RS485 communication chips between the receiver output terminal RO and control module of RS485 communication chips
Input terminal DI is connected with control module, series resistance R114, resistance R114 on the differential signal receiving terminal A of RS485 communication chips
Node between the differential signal receiving terminal A of RS485 communication chips is connected ground connection, capacitance C66 and resistance with resistance R112
R112 is in parallel, series resistance R116 on the differential signal transmitting terminal B of RS485 communication chips, resistance R116 and RS485 communication chips
Differential signal transmitting terminal B between node connect with resistance R117 ground connection, capacitance C67 is in parallel with resistance R117.
In preferred embodiment, the resistance value of resistance R113 is 1K Ω, and the resistance value of resistance R112 is 10K Ω, resistance
The resistance value of R117 is 10K Ω, and the capacitance of capacitance C66 is 1nF, and the capacitance of capacitance C67 is 1nF.
In preferred embodiment, RS485 communication chips use MAX13487 chips.
In preferred embodiment, as shown in figure 4, low-pass filter circuit, including resistance R1 and capacitance C1, resistance R1 and capacitance
C1 is connected between the anode of DC power supply and ground, and the node between resistance R1 and capacitance C1 is connected with control module.
In preferred embodiment, the resistance value of resistance R1 is 10K Ω, and the capacitance of capacitance C1 is 100nF.
Communication is with the electronic circuitry of the multi-functional branch monitoring system of high voltage direct current distribution as shown in Fig. 2 to Figure 15.
The communication of the technical program is had the following effects that with the multi-functional branch monitoring system of high voltage direct current distribution：
1. communication with the multi-functional branch monitoring modular of high voltage direct current distribution be integrated on off state monitor, electric quantity monitoring and absolutely
Edge monitor function realizes the monitoring to branch various parameters and load operation conditions in communication high voltage direct current distribution system.
2. by RS485 communication modes, realize the data interaction with main control module, shown by seven cun of touch-screens.
3. multi-functional branch monitoring system is by isolated from power technology and Signal Isolation Technology, by power supply carry out every
From, thus make whole system on the premise of signal normal transmission is ensured, be electrically total to place with extraneous nothing, once it is extraneous
Larger surge voltage is inputted to system, will avoid losing or being minimized loss.
4. communicating by RS485 with main control module, there is automatic direction conversion function.
5. passive switch amount Acquisition Circuit can gather 24 way switch states, sourceless characteristic is embodied in：When switching value is defeated
It is switch closed condition when access point is grounded；It is switch off state, switching value access point is in opening and closing shape when its is hanging
State is not charged.In this circuit, control module (MCU) selects the STM32F103RCT6 of ST Microelectronics, and switch disconnects shape
During state, the GPIO mouths of MCU are connected to 3.3V by pull-up resistor, and corresponding GPIO mouthfuls of MCU will obtain level " l "；Conversely, when switch
During closure, GPIO mouthfuls of level are pulled to 0V, and the corresponding GPIO mouthfuls of input of MCU is 0.
6. electric quantity acquisition circuit can gather 24 tunnels, the voltage signal of 0-4V is inputted, first carries out electric resistance partial pressure, then by low
Bandpass filter is filtered, and is sampled after then being selected by multi-channel analog selector into MCU ADC channels.Into MCU
The voltage range of pin is 0-2V.
Communication monitors the system integration on off state monitoring, electric quantity monitoring and insulation with the multi-functional branch of high voltage direct current distribution
Monitor function realizes the monitoring to branch various parameters and load operation conditions in communication high voltage direct current distribution system, leads to
RS485 communication modes are crossed, the data interaction with master control is realized, is shown by seven cun of touch-screens, complete the most data of system, letter
Number acquisition, the automatic direction switch technology of RS485 communications applications eliminate transmit-receive position control pin, save MCU I/O hardwares money
Source also avoids caused shake during the conversion of direction, makes communication more reliable, more efficient.
Finally it should be noted that：The above is only the preferred embodiment of the utility model only, is not limited to this
Utility model, although the utility model is described in detail with reference to the foregoing embodiments, for those skilled in the art
For, it can still modify to the technical solution recorded in foregoing embodiments or to which part technical characteristic
Carry out equivalent substitution.Within the spirit and principle of the utility model, any modifications, equivalent replacements and improvements are made,
It should be included within the scope of protection of this utility model.
Claims (6)
1. a kind of communication multi-functional branch monitoring system of high voltage direct current distribution, which is characterized in that including control module, switch shape
State monitoring modular, electric quantity monitoring module, insulating monitoring module and communication module, the on off state monitoring modular, electric quantity monitoring
Module, insulating monitoring module and communication module are electrically connected with control module, the on off state monitoring modular, including dry contact
Interface circuit and low-pass filter circuit are transmitted to control after the low-pass filtered circuit of dry contact interface circuit received signal
Module, the electric quantity monitoring module are selected including current detecting interface circuit, divider filter signal processing circuit and multi-channel analog
On-off circuit, the current detecting interface circuit received signal are selected successively through divider filter signal processing circuit and multi-channel analog
Control module, the insulating monitoring module, including insulating monitoring interface circuit and signal processing electricity are transmitted to after selecting on-off circuit
Road, the insulating monitoring interface circuit received signal are transmitted to control module, the communication module, bag through signal processing circuit
RS485 interface circuits and communication check and level shifting circuit are included, the RS485 interface circuits received signal is examined through communication
It surveys and is transmitted to control module after level shifting circuit.
2. the communication according to claim 1 multi-functional branch monitoring system of high voltage direct current distribution, which is characterized in that described
Communication check and level shifting circuit, including RS485 communication chips, the receiver output terminal RO of the RS485 communication chips with
Series resistance R113 between control module, the driver input end DI of the RS485 communication chips is connected with control module, described
Series resistance R114 on the differential signal receiving terminal A of RS485 communication chips, resistance R114 and the difference of RS485 communication chips are believed
Node between number receiving terminal A is connected ground connection with resistance R112, and capacitance C66 is in parallel with resistance R112, the RS485 communication chips
Differential signal transmitting terminal B on series resistance R116, between the differential signal transmitting terminal B of resistance R116 and RS485 communication chip
Node connect with resistance R117 ground connection, capacitance C67 is in parallel with resistance R117.
3. the communication according to claim 2 multi-functional branch monitoring system of high voltage direct current distribution, which is characterized in that described
The resistance value of resistance R113 is that the resistance value of 1K Ω, the resistance R112 are that the resistance value of 10K Ω, the resistance R117 is 10K
The capacitance of Ω, the capacitance C66 are 1nF, and the capacitance of the capacitance C67 is 1nF.
4. the communication according to claim 2 multi-functional branch monitoring system of high voltage direct current distribution, which is characterized in that described
RS485 communication chips use MAX13487 chips.
5. the communication according to claim 1 multi-functional branch monitoring system of high voltage direct current distribution, which is characterized in that described
Low-pass filter circuit is connected on the anode and ground of DC power supply including resistance R1 and capacitance C1, the resistance R1 and capacitance C1
Between, the node between the resistance R1 and capacitance C1 is connected with control module.
6. the communication according to claim 5 multi-functional branch monitoring system of high voltage direct current distribution, which is characterized in that described
The resistance value of resistance R1 is that the capacitance of 10K Ω, the capacitance C1 are 100nF.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721571468.1U CN207424169U (en) | 2017-11-22 | 2017-11-22 | The communication multi-functional branch monitoring system of high voltage direct current distribution |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721571468.1U CN207424169U (en) | 2017-11-22 | 2017-11-22 | The communication multi-functional branch monitoring system of high voltage direct current distribution |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207424169U true CN207424169U (en) | 2018-05-29 |
Family
ID=62304038
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721571468.1U Active CN207424169U (en) | 2017-11-22 | 2017-11-22 | The communication multi-functional branch monitoring system of high voltage direct current distribution |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207424169U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114844215A (en) * | 2022-05-17 | 2022-08-02 | 中国人民解放军63660部队 | Multi-path direct-current power supply device capable of remotely monitoring and controlling in real time |
-
2017
- 2017-11-22 CN CN201721571468.1U patent/CN207424169U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114844215A (en) * | 2022-05-17 | 2022-08-02 | 中国人民解放军63660部队 | Multi-path direct-current power supply device capable of remotely monitoring and controlling in real time |
| CN114844215B (en) * | 2022-05-17 | 2024-04-09 | 中国人民解放军63660部队 | Multipath direct-current power supply device capable of being remotely monitored and controlled in real time |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101946385A (en) | Pv sub-generator junction box, pv generator junction box, and pv inverter for a pv system, and pv system | |
| CN104216022A (en) | Distributed parallel electrical method data collecting cable device | |
| CN106021166B (en) | Multi-host communication circuit based on RS485 bus | |
| CN110018726A (en) | The main website machine device for providing power supply simultaneously using two lines bus and being communicated | |
| CN207424169U (en) | The communication multi-functional branch monitoring system of high voltage direct current distribution | |
| CN102176680A (en) | Detection device for electricity information acquisition system | |
| CN207560031U (en) | The controllable controller of CAN communication circuit terminal resistance | |
| CN204154907U (en) | The large line apparatus of a kind of distributed parallel electrical method data acquisition | |
| CN104052152A (en) | Intelligent power supply and distribution unit | |
| CN107291646B (en) | Network port and serial port multiplexing device and single board | |
| CN208477322U (en) | POE network interface expanded circuit, repeater and network monitoring system | |
| CN208239974U (en) | The main website machine device for providing power supply simultaneously using two lines bus and being communicated | |
| CN210167853U (en) | Distribution automation terminal | |
| CN117271416A (en) | Interface circuit of self-adaptation RS232 and RS485 | |
| CN112564075A (en) | Bidirectional charging wire structure | |
| CN103403563A (en) | Reverse power supply circuit test system and device | |
| CN207652308U (en) | Control the circuit of business board on/off | |
| CN108112273A (en) | Voltameter and the adaptor module for it | |
| CN215816703U (en) | Intelligent safety socket based on Internet of things | |
| CN205160517U (en) | Communication monitoring system | |
| CN206135878U (en) | Compact switch matrix circuit | |
| CN106855700B (en) | A kind of control of intelligent terminal for distribution line on-pole switch | |
| CN204706166U (en) | A kind of telepilot with multiple communication interface | |
| CN210720552U (en) | Integrated small current acquisition system | |
| CN108254009A (en) | A kind of detection circuit and judgment method for being adapted to different sensors |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder |
Address after: 730000 788 Pengjiaping West Road, Qilihe District, Lanzhou City, Gansu Province Patentee after: Lanzhou Haihong Technology Co., Ltd. Address before: 730000 Pengjiaping 240, Qilihe District, Lanzhou City, Gansu Province Patentee before: Lanzhou Haihong Technology Co., Ltd. |
|
| CP02 | Change in the address of a patent holder |