CN110658410A - Electric energy quality monitoring device - Google Patents

Electric energy quality monitoring device Download PDF

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Publication number
CN110658410A
CN110658410A CN201910992507.2A CN201910992507A CN110658410A CN 110658410 A CN110658410 A CN 110658410A CN 201910992507 A CN201910992507 A CN 201910992507A CN 110658410 A CN110658410 A CN 110658410A
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CN
China
Prior art keywords
power quality
quality monitoring
module
monitoring unit
iot
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.)
Pending
Application number
CN201910992507.2A
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Chinese (zh)
Inventor
张明达
秦立明
胡盛
董博
叶勇
裘哲峰
王思谨
孙益辉
周剑伦
严青
胡宏盛
许耀杰
李满康
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ningbo Hengchen Electric Power Construction Co Ltd
Ningbo Power Supply Co of State Grid Zhejiang Electric Power Co Ltd
Original Assignee
Ningbo Hengchen Electric Power Construction Co Ltd
Ningbo Power Supply Co of State Grid Zhejiang Electric Power Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ningbo Hengchen Electric Power Construction Co Ltd, Ningbo Power Supply Co of State Grid Zhejiang Electric Power Co Ltd filed Critical Ningbo Hengchen Electric Power Construction Co Ltd
Priority to CN201910992507.2A priority Critical patent/CN110658410A/en
Publication of CN110658410A publication Critical patent/CN110658410A/en
Pending legal-status Critical Current

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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • GPHYSICS
    • G08SIGNALLING
    • G08CTRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C17/00Arrangements for transmitting signals characterised by the use of a wireless electrical link
    • G08C17/02Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link

Abstract

The invention discloses a power quality monitoring device, which comprises a cloud server and a plurality of power quality monitoring units, wherein each power quality monitoring unit comprises: the data acquisition module is used for acquiring the voltage and the current of the monitoring point and transmitting the sampling information to the CPU; the NB-IOT module is used for being in wireless communication connection with the cloud server through an NB-IOT network mode; the CPU is used for determining the power quality parameters according to the sampling information transmitted by the data acquisition module and transmitting the power quality parameters to the cloud server through the NB-IOT module; the data acquisition module and the NB-IOT module are respectively and electrically connected with the CPU processor. The invention is based on NB-IOT technology, is easy to centralize communication management and installation implementation, greatly reduces the maintenance cost of customers, and can meet the requirements of the customers on the Internet of things for communication management, monitoring and analysis.

Description

Electric energy quality monitoring device
Technical Field
The invention relates to the technical field of electric energy detection, in particular to an electric energy quality monitoring device.
Background
At present, the existing power quality monitoring units are usually RS485 communication interfaces and are in wired communication connection. With the continuous development of the internet of things technology, the quality of electric energy at the tail end of a low-voltage distribution system is also gradually emphasized by a power grid. However, the distribution of the low-voltage distribution branch boxes is dispersed, and if the existing power quality monitoring unit based on the RS485 communication interface is installed, centralized communication management is obviously not easy, and installation and implementation are also not convenient. If GPRS wireless communication is used instead, although the communication speed is high, the traffic charge is too high.
Disclosure of Invention
The invention provides a power quality monitoring device to solve the technical problem.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
the utility model provides an electric energy quality monitoring devices, includes cloud ware and a plurality of electric energy quality monitoring unit, every electric energy quality monitoring unit all includes:
the data acquisition module is used for acquiring the voltage and the current of the monitoring point and transmitting the sampling information to the CPU;
the NB-IOT module is used for being in wireless communication connection with the cloud server through an NB-IOT network mode;
the CPU is used for determining the power quality parameters according to the sampling information transmitted by the data acquisition module and transmitting the power quality parameters to the cloud server through the NB-IOT module;
the data acquisition module and the NB-IOT module are respectively and electrically connected with the CPU processor.
Preferably, the power quality monitoring unit further comprises a clock calibration module, and the clock calibration module is electrically connected with the CPU processor and is configured to provide a real-time clock signal to the CPU processor.
Preferably, the power quality monitoring unit further comprises a clock calibration module, and the clock calibration module is in communication connection with the CPU processor through an NB-IOT network mode and is configured to provide a real-time clock signal to the CPU processor.
Preferably, the power quality monitoring unit further comprises a storage module, and the storage module is electrically connected with the CPU processor and is used for storing the power quality parameters and the sampling information.
Preferably, the power quality monitoring unit further comprises a touch screen, and the touch screen is electrically connected with the CPU processor and is used for displaying power quality parameters and sampling information.
Preferably, the power quality monitoring unit further comprises an ESAM safety module, and the ESAM safety module is electrically connected with the CPU.
Preferably, the supply voltage of the NB-IOT module is 3.3V.
As a further preference, the chip model of the NB-IOT module is WH-NB 75.
Preferably, the power quality monitoring unit further comprises a cruising power supply module which supplies power to each module in the power quality monitoring unit when an external power supply fails, and the cruising power supply module is one or a combination of a lithium battery and a solar battery.
Preferably, the power quality monitoring unit further comprises a second transmission module, the second transmission module is electrically connected with the CPU, and the second transmission module is in communication connection with the cloud server through Wifi, Bluetooth, 4G, 5G or Ethernet.
Compared with the prior art, the invention is based on the NB-IOT technology, is easy to centralize communication management and installation implementation, greatly reduces the maintenance cost of customers, and can meet the requirements of the customers on the Internet of things for communication management, monitoring and analysis.
Drawings
Fig. 1 is a block diagram of a power quality monitoring device according to the present invention.
In the figure, 1-a power quality monitoring unit, 2-a cloud server, 11-a CPU (central processing unit), 12-NB-IOT (input/output) module, 13-a data acquisition module, 14-a clock calibration module, 15-a storage module, 16-a touch screen and 17-an ESAM (electronic service access module) safety module.
Detailed Description
The present invention will be described in detail below with reference to specific embodiments shown in the drawings. These embodiments are not intended to limit the present invention, and structural, methodological, or functional changes made by those skilled in the art according to these embodiments are included in the scope of the present invention.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in this specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
As shown in fig. 1, an electric energy quality monitoring device includes a cloud server 2 and a plurality of electric energy quality monitoring units 1, and each electric energy quality monitoring unit 1 includes:
the data acquisition module 13 is used for acquiring the voltage and the current of the monitoring point and transmitting the sampling information to the CPU;
the NB-IOT module 12 is used for being in wireless communication connection with the cloud server through an NB-IOT network mode;
the CPU 11 is used for determining the power quality parameter according to the sampling information transmitted by the data acquisition module and transmitting the power quality parameter to the cloud server through the NB-IOT module;
the data acquisition module 13 and the NB-IOT module 2 are respectively and electrically connected with the CPU processor 1.
NB-IOT, which is called Narrow-Band Internet of Things (Narrow Band Internet of Things), has low power consumption, wide coverage, low cost and large capacity. The NB-IoT is constructed in a cellular network, can be directly deployed in a GSM network, a UMTS network or an LTE network, and the like, and can greatly reduce the deployment cost. The NB-IOT supports cellular data connection of low-power consumption equipment in a wide area network, and supports efficient connection of equipment which has long standby time and higher requirement on network connection. Typically, the supply voltage of NB-IOT module 12 is 3.3V, for example, the chip model of NB-IOT module may select WH-NB75 with a supply voltage of 3.3V. Based on this, the number of the power quality monitoring units 1 and the distance from the cloud server can be set according to actual conditions, so as to cover the area needing to be detected more widely.
The sampling information is the voltage and the current of the monitoring point; the electric energy quality parameters comprise active power, reactive power, power factors and other electric quantity parameters obtained by further calculation according to the sampling information.
In order to make the sampling time more accurate, the power quality monitoring unit 1 may further include a clock calibration module 14, where the clock calibration module 14 is electrically connected to the CPU processor 11 or is in communication connection in a wireless communication manner such as an NB-IOT network mode, and is configured to provide a real-time clock signal to the CPU processor 11. Here, the connection mode of the clock calibration module 14 and the CPU processor 11 can be freely designed according to actual needs, and the NB-IOT network mode is also one of the preferable options.
In order to store the power quality parameters and the sampling information in real time, the power quality monitoring unit 1 may further include a storage module 15, and the storage module 15 is electrically connected to the CPU 11. The storage module 15 may be a FLASH memory, a USB, a solid state disk or a mobile hard disk.
In order to display the power quality parameters and the sampling information in real time, the power quality monitoring unit 1 may further include a touch screen 16, and the touch screen 16 is electrically connected to the CPU 11. The touch screen 16 also allows the operator to freely select the power quality parameters and sampling information to be displayed.
In order to ensure the safety and stability of the system operation, the power quality monitoring unit 1 may include an ESAM safety module 17, and the ESAM safety module 17 is electrically connected to the CPU processor 11. The ESAM security module can guarantee the data access and the security authentication process of the key.
In order to prevent the external power supply from stopping working when in fault, the power quality monitoring unit 1 may further include a cruising power supply module 18, wherein the cruising power supply module 18 is one or more combinations of a lithium battery and a solar battery, and supplies power to each module in the power quality monitoring unit 1 when in fault.
In order to ensure the continuity of the network, the power quality monitoring unit 1 may further include a second transmission module, the second transmission module is electrically connected to the CPU processor 11, and the second transmission module is in communication connection with the cloud server 2 through Wifi, bluetooth, 4G, 5G, or ethernet, so that the power quality parameter can still be transmitted to the cloud server 2 when the NB-IOT module 12 fails.
Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.
It will be understood that the invention is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the invention is limited only by the appended claims.

Claims (10)

1. The utility model provides an electric energy quality monitoring devices, its characterized in that, includes cloud ware and a plurality of electric energy quality monitoring unit, and every electric energy quality monitoring unit all includes:
the data acquisition module is used for acquiring the voltage and the current of the monitoring point and transmitting the sampling information to the CPU;
the NB-IOT module is used for being in wireless communication connection with the cloud server through an NB-IOT network mode;
the CPU is used for determining the power quality parameters according to the sampling information transmitted by the data acquisition module and transmitting the power quality parameters to the cloud server through the NB-IOT module;
the data acquisition module and the NB-IOT module are respectively and electrically connected with the CPU processor.
2. The power quality monitoring device of claim 1, wherein the power quality monitoring unit further comprises a clock calibration module, the clock calibration module is electrically connected to the CPU processor and configured to provide a real-time clock signal to the CPU processor.
3. The power quality monitoring device of claim 1, wherein the power quality monitoring unit further comprises a clock calibration module, and the clock calibration module is communicatively connected with the CPU processor through an NB-IOT network mode and configured to provide a real-time clock signal to the CPU processor.
4. The power quality monitoring device of claim 1, wherein the power quality monitoring unit further comprises a storage module electrically connected to the CPU processor for storing power quality parameters and sampling information.
5. The power quality monitoring device according to claim 1, wherein the power quality monitoring unit further comprises a touch screen electrically connected to the CPU for displaying power quality parameters and sampling information.
6. The power quality monitoring device of claim 4, wherein the power quality monitoring unit further comprises an ESAM security module, the ESAM security module being electrically connected to the CPU processor.
7. The power quality monitoring device according to any one of claims 1 to 6, wherein the supply voltage of the NB-IOT module is 3.3V.
8. The power quality monitoring device of claim 7, wherein the NB-IOT module has a chip model of WH-NB 75.
9. The power quality monitoring device according to claims 1 to 6, wherein the power quality monitoring unit further comprises a cruising power module for supplying power to each module in the power quality monitoring unit when an external power supply fails, and the cruising power module is one or more of a lithium battery and a solar battery.
10. The power quality monitoring device according to claims 1 to 6, wherein the power quality monitoring unit further comprises a second transmission module, the second transmission module is electrically connected with the CPU, and the second transmission module is in communication connection with the cloud server through Wifi, Bluetooth, 4G, 5G or Ethernet.
CN201910992507.2A 2019-10-18 2019-10-18 Electric energy quality monitoring device Pending CN110658410A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113115427A (en) * 2020-01-10 2021-07-13 广东电网有限责任公司电力科学研究院 Power quality monitoring equipment and power quality data transmission method and device thereof
CN113176466A (en) * 2021-05-24 2021-07-27 苏州大学 Electric energy quality monitoring system of intelligent electric meter

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103051450A (en) * 2012-12-10 2013-04-17 中国电力科学研究院 System and method applicable to electric power information collection system for distributing safety tasks
CN205749744U (en) * 2016-07-01 2016-11-30 丰郅(上海)新能源科技有限公司 The electric energy quality monitoring system calculated based on mist
CN206892220U (en) * 2017-05-27 2018-01-16 河南森源电气股份有限公司 A kind of equipment for monitoring power quality
CN108037349A (en) * 2017-12-12 2018-05-15 杨玲 A kind of distributed power system power quality multi-target analysis monitoring platform
CN207502643U (en) * 2017-12-07 2018-06-15 国网江苏省电力公司镇江供电公司 Power quality main website data insertion system
CN207586320U (en) * 2017-11-15 2018-07-06 全球能源互联网研究院有限公司 A kind of electric energy quality monitoring terminal
CN109300298A (en) * 2018-11-16 2019-02-01 华东理工大学 A kind of energy data information acquisition system with internet of things functional
CN110146813A (en) * 2019-05-20 2019-08-20 内蒙古工业大学 A kind of distributing Wind turbines electric energy quality test method
CN110161342A (en) * 2019-06-11 2019-08-23 哈尔滨工业大学 A kind of electric energy quality monitoring system and method

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103051450A (en) * 2012-12-10 2013-04-17 中国电力科学研究院 System and method applicable to electric power information collection system for distributing safety tasks
CN205749744U (en) * 2016-07-01 2016-11-30 丰郅(上海)新能源科技有限公司 The electric energy quality monitoring system calculated based on mist
CN206892220U (en) * 2017-05-27 2018-01-16 河南森源电气股份有限公司 A kind of equipment for monitoring power quality
CN207586320U (en) * 2017-11-15 2018-07-06 全球能源互联网研究院有限公司 A kind of electric energy quality monitoring terminal
CN207502643U (en) * 2017-12-07 2018-06-15 国网江苏省电力公司镇江供电公司 Power quality main website data insertion system
CN108037349A (en) * 2017-12-12 2018-05-15 杨玲 A kind of distributed power system power quality multi-target analysis monitoring platform
CN109300298A (en) * 2018-11-16 2019-02-01 华东理工大学 A kind of energy data information acquisition system with internet of things functional
CN110146813A (en) * 2019-05-20 2019-08-20 内蒙古工业大学 A kind of distributing Wind turbines electric energy quality test method
CN110161342A (en) * 2019-06-11 2019-08-23 哈尔滨工业大学 A kind of electric energy quality monitoring system and method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113115427A (en) * 2020-01-10 2021-07-13 广东电网有限责任公司电力科学研究院 Power quality monitoring equipment and power quality data transmission method and device thereof
CN113176466A (en) * 2021-05-24 2021-07-27 苏州大学 Electric energy quality monitoring system of intelligent electric meter

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Application publication date: 20200107