CN208506156U - Grid power quality control and monitoring system - Google Patents
Grid power quality control and monitoring system Download PDFInfo
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- CN208506156U CN208506156U CN201820979549.3U CN201820979549U CN208506156U CN 208506156 U CN208506156 U CN 208506156U CN 201820979549 U CN201820979549 U CN 201820979549U CN 208506156 U CN208506156 U CN 208506156U
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- power quality
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Abstract
A kind of control of grid power quality and monitoring system, it is characterized by: main control singlechip has 10 output ends and 2 input terminals, output end and RS485 communicating circuit, automatic reclosing, power supervisor, Wifi, bluetooth, Ethernet, solid-state relay group, capacitive touch device group, power relay group, first online electric energy meter connects, one input terminal connects the second online electric energy meter, the output end of another input terminal connection power quality collection plate, the input terminal of power quality collection plate connects voltage transformer and current transformer, main control singlechip receives power quality collection plate and acquires the electrical parameter to come up, main control singlechip passes through bluetooth, Wifi, Ethernet is realized to be communicated with host computer, overcurrent when overcurrent and electric discharge when can effectively inhibit capacitor charging, main control singlechip by pair The power supply supply stable operation of whole system is realized in the coordinated management of power supervisor.
Description
Technical field
The utility model relates to supplying electricity and power distribution net real time monitoring fields, more particularly to the online of power quality parameter
Monitor regulating system.
Background technique
Currently, the country is for utility power quality control and detects towards intelligence, refines direction and develop.Power quality
It is serially connected in power grid actual tests route for control and detection device, by tunable load and online electric energy meter structure inside the device
At, the impedance of control power device and route can be simulated by adjusting load, for the parameters of on-line control power quality,
Be various testing machines and low-voltage electrical apparatus electrification experiment must accessory.The application can realize cheap dynamic nothing both with factory and enterprise
Function compensation, and its load adjustability can also be applied to many schools of research institute and carry out research work, using effect prospect
Extensively, cheap, control is simple.
Utility model content
The utility model, while can mainly solving the technical problems that provide a kind of utility power quality control and monitoring device
Realize the on-line monitoring system that the acquisition of full automatic reactive compensation, harmonics restraint and power quality parameter calculates.
The utility model provides a kind of control of grid power quality and monitoring system, it is characterised in that: including master control monolithic
Mechanical, electrical energy quality collection plate, RS485 communicating circuit, two online electric energy meter, automatic reclosing, power management module, liquid crystals
Show device, voltage transformer, current transformer, solid-state relay group, capacitive touch device group, power relay group, bluetooth,
Wifi, Ethernet, main control singlechip have 10 output ends and 2 input terminals, 10 output ends respectively with RS485 communicating circuit,
Automatic reclosing, power supervisor, Wifi, bluetooth, Ethernet, solid-state relay group, capacitive touch device group, power relay
Group, the first online electric energy meter connect, and an input terminal connects the second online electric energy meter, another input terminal connection power quality is adopted
Collect the output end of plate, the input terminal of power quality collection plate connects voltage transformer and current transformer, the first online electric energy meter
Liquid crystal display is connected, main control singlechip receives power quality collection plate and acquires the electrical parameter to come up, online omnipotent using first
Table shows electrical parameter by liquid crystal display, and main control singlechip is realized by bluetooth, Wifi, Ethernet and communicated with host computer, is led to
It crosses RS485 communicating circuit system various functions are manually arranged, main control singlechip dominates each relay by serial code
Disconnection and closure, overcurrent when overcurrent and electric discharge when can effectively inhibit capacitor charging, main control singlechip
By the coordinated management to power supervisor, the power supply supply stable operation of whole system is realized.
The main control singlechip model MSP430.
The RS485 communicating circuit interface uses SP3485 chip control circuit.
The power quality collection plate uses Qingdao Qing Zhi Instrument Ltd. P350.
The CT PT100VA that the voltage transformer, current transformer use De Lixi electrical.
The online electric energy meter of described two uses 485 long-range three-phase and four-line electric energy meters of Liu Chuan Instrument Corporation.
The Wifi uses Node MCU ESP8266 module.
The Ethernet uses the UT-620RS485 of Yu Tai company to turn Ethernet TCP IP module.
The power management module uses Guangzhou that can reach isolated power supply module.
The utility model acquires data precision height, and power quality parameter adjustment speed is fast, and it is accurate to adjust, and flexibility is high, tool
There is real-time.It is good to avoid that manual adjustment is slow, the bad drawback of regulating effect.
Detailed description of the invention
Fig. 1 is schematic structural view of the invention；
Fig. 2 is main controller circuit figure of the present invention；
Fig. 3 is RS485 bus circuit figure of the present invention；
Fig. 4 is communicating circuit structural schematic diagram of the present invention.
Specific embodiment
Referring to Fig.1, the utility model includes main control singlechip, power quality collection plate, communication module (blue tooth wireless communication
Module, WIFI wireless communication module, Ethernet wire communication module), online electric energy meter, control keyboard, automatic reclosing, power supply
Management module, liquid crystal display, voltage transformer, current transformer, solid-state relay group, capacitive touch device group, power after
Electric appliance group.Main control singlechip (passes through three-phase electricity with RS485 communicating circuit (transmitting data on the spot), power quality collection plate respectively
Voltage current transformer acquires every alternating current parameter), online electric energy meter (metering for electric energy), automatic reclosing (protection),
Power management module (give modules power supply), WiFi (close range wireless communication), bluetooth (closely one-to-one wireless telecommunications),
Ethernet (long-range host computer communication), solid-state relay group (control reactor group in parallel), (control is simultaneously for capacitive touch device group
The capacitor group of connection), power relay group connect (control in parallel resistor group) connect, power quality collection plate connects three-phase
Voltage current transformer, online electric energy meter connect liquid crystal display.
Main control singlechip out referred herein receives voltage transformer, current transformer, power quality collection plate and acquires
The electrical parameter come makes reactive compensation by automatically analyzing for single-chip microcontroller, and harmonics restraint, automatic reclosing etc. operate, while it
Using online universal meter, show that electrical parameter, main control singlechip can also be real by bluetooth, Wifi, Ethernet by liquid crystal display
It now communicates, system various functions can also be manually arranged with keyboard with host computer.Main control singlechip is by serial code come real
The disconnection and closure of existing each relay, the electric appliance that can be realized each parallel connection can be connected to circuit by optimum distributing scheme
On.Capacitive touch device group can effectively inhibit overcurrent when capacitor charging.Main control singlechip connects power supervisor, can be with
Realize the power management of whole system.
Referring to Fig. 2, main control singlechip uses the serial 16 control chips of MSP430, its 5 feet and 6 feet are connected to
12Mhz without source crystal oscillator X1 above, there are two trimming capacitor C 8, C9 to be connected to GND, above on side.Its 7 feet are to reset to draw
Foot is connected to ground, and RC a C10 and R6 charging delay circuit in parallel by a key SW1, enables single-chip microcontroller real
Existing power-on reset function.Its 1,2,3,4 feet are NRST respectively, and PC13, PC14 and PC15 are to simulate the spi bus come to be connected to
It carries out handing over the teledata of external host computer on Wifi module, the bluetooth module either SPI interface of ethernet module
Mutually.10 to 17 feet are connected to above eight parallel ports of 8 bit matrix keyboards above keyboard, are connected to above GND by keyboard later.It is logical
Believe that module by the 18th, 19 (PB0, PB1) foot on single-chip microcontroller, draws and picks out Transistor-Transistor Logic level serial ports.PB2 is opening for automatic reclosing
Detection interface is closed, is connected to above GND by the normally opened auxiliary contact of automatic reclosing.25 to 31 mouthfuls of main control singlechip are relays
The communication interface of device group realizes the disconnection and closure of each relay by serial code；Its 45th and 46 pins are connected to
Above RS485 communication bus.
Referring to Fig. 3, RS485 communicating circuit is connected to by D7 the and D8 pin incoming serial data above main control singlechip
Above one 74VHC04 No. six phase inverter, so that the signal inversion and isolation of D8.SP485RS485 is connected to the signal of D7 later
RO and DI pin above conversion chip, the A and B of output end are connected to above the binding post JP1 of 485 modules, while 485A has one
The pull-up resistor of a 47K, 485B have the pull down resistor of a 47K, are coupled with above 5V network and GND.Later 485A and
485B is connected to above power quality collection plate, can carry out serial communication.GND is connected to the cathode of power management, generates circuit,
Circuit is set to work.
Referring to Fig. 4, RS485 communicating circuit includes wireless singlechip (3-1), pin 16, the pin of wireless singlechip (3-1)
17 and pin 18 be connected respectively with the pin 12 of acceleration transducer (18), pin 10 and pin 8, wireless singlechip (3-1)
Pin 44 connect with capacitor C1, capacitor C1 ground connection, the pin 43 of wireless singlechip (3-1) connects with capacitor C2, and capacitor C2 connects
Ground, is parallel with crystal oscillator 1 between the pin 44 and pin 43 of wireless singlechip (3-1), the pin 19 of wireless singlechip (3-1) with
Capacitor C5 series connection, capacitor C5 ground connection, the pin 21 of wireless singlechip (3-1) are connected with capacitor C4, and capacitor C4 ground connection is wireless single
The pin 32 of piece machine (3-1) is connected with one end of one end of inductance L2 and galley microwave transmission line (3-3) respectively, inductance L2
The other end be connected with the pin 34 of wireless singlechip (3-1), the other end of galley microwave transmission line (3-3) respectively with electricity
Sense L2 the other end, pin 34 be connected with one end of inductance L3, the other end of inductance L3 connect with capacitor C3, capacitor C3 with outside
Portion's antenna (3-2) is connected.
Claims (10)
1. a kind of grid power quality control and monitoring system, it is characterised in that: acquired including main control singlechip, power quality
Plate, RS485 communicating circuit, two online electric energy meter, automatic reclosing, power management module, liquid crystal display, mutual induction of voltage
Device, current transformer, solid-state relay group, capacitive touch device group, power relay group, bluetooth, Wifi, Ethernet, master control
Single-chip microcontroller has 10 output ends and 2 input terminals, 10 output ends respectively with RS485 communicating circuit, automatic reclosing, power supply pipe
Manage device, Wifi, bluetooth, Ethernet, solid-state relay group, capacitive touch device group, power relay group, the first online electric energy meter
Connect, an input terminal connects the second online electric energy meter, another input terminal connects the output end of power quality collection plate, electric energy
The input terminal of quality collection plate connects voltage transformer and current transformer, and the first online electric energy meter connects liquid crystal display, main
Control single-chip microcontroller receives the electrical parameter that the acquisition of power quality collection plate comes up and passes through liquid crystal display using the first online universal meter
Show electrical parameter, main control singlechip is realized by bluetooth, Wifi, Ethernet and communicated with host computer, and RS485 communicating circuit pair is passed through
System various functions are manually arranged, and main control singlechip dominates the disconnection and closure of each relay by serial code, can
Overcurrent when overcurrent and electric discharge when effectively inhibiting capacitor charging, main control singlechip pass through to power supervisor
The power supply supply stable operation of whole system is realized in coordinated management.
2. grid power quality control according to claim 1 and monitoring system, it is characterised in that: the master control monolithic
Machine includes MSP430 chip, minimum system circuit, and RS485 communicating circuit is connected with main control singlechip MSP430 respectively.
3. grid power quality control according to claim 1 and monitoring system, it is characterised in that: 485 communications
Interface uses SP3485 chip control circuit.
4. grid power quality control according to claim 1 and monitoring system, it is characterised in that: the power quality
Collection plate uses Qingdao Qing Zhi Instrument Ltd. P350.
5. grid power quality control according to claim 1 and monitoring system, it is characterised in that: the mutual induction of voltage
The CT PT100VA that device, current transformer use De Lixi electrical.
6. grid power quality control according to claim 1 and monitoring system, it is characterised in that: the online electric energy
Table uses 485 long-range three-phase and four-line electric energy meters of Liu Chuan Instrument Corporation.
7. grid power quality control according to claim 1 and monitoring system, it is characterised in that: the Wifi module
Use Node MCU ESP8266 module.
8. grid power quality control according to claim 1 and monitoring system, it is characterised in that: the bluetooth uses
Be ESP32-01 double frequency double-core bimodulus group bluetooth module.
9. grid power quality control according to claim 1 and monitoring system, it is characterised in that: the Ethernet makes
It is that the UT-620RS485 of Yu Tai company turns Ethernet TCP IP module.
10. grid power quality according to claim 1 control and monitoring system, it is characterised in that: the solid-state after
Electric appliance group, capacitive touch device group, power relay group driving circuit use MOC3201 and TLP521 that optocoupler is driven to drive
It is dynamic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820979549.3U CN208506156U (en) | 2018-06-25 | 2018-06-25 | Grid power quality control and monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820979549.3U CN208506156U (en) | 2018-06-25 | 2018-06-25 | Grid power quality control and monitoring system |
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| Publication Number | Publication Date |
|---|---|
| CN208506156U true CN208506156U (en) | 2019-02-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201820979549.3U Active CN208506156U (en) | 2018-06-25 | 2018-06-25 | Grid power quality control and monitoring system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108562815A (en) * | 2018-06-25 | 2018-09-21 | 长春工程学院 | Power grid utility power quality control and monitoring system |
| CN113009222A (en) * | 2021-02-05 | 2021-06-22 | 中国电力科学研究院有限公司 | Electric energy quality module based on intelligent thing allies oneself with electric energy meter |
-
2018
- 2018-06-25 CN CN201820979549.3U patent/CN208506156U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108562815A (en) * | 2018-06-25 | 2018-09-21 | 长春工程学院 | Power grid utility power quality control and monitoring system |
| CN113009222A (en) * | 2021-02-05 | 2021-06-22 | 中国电力科学研究院有限公司 | Electric energy quality module based on intelligent thing allies oneself with electric energy meter |
| CN113009222B (en) * | 2021-02-05 | 2024-05-14 | 中国电力科学研究院有限公司 | Electric energy quality module based on intelligent internet of things electric energy meter |
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