CN203054103U - Handheld power quality analyzer - Google Patents
Handheld power quality analyzer Download PDFInfo
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- CN203054103U CN203054103U CN 201220631652 CN201220631652U CN203054103U CN 203054103 U CN203054103 U CN 203054103U CN 201220631652 CN201220631652 CN 201220631652 CN 201220631652 U CN201220631652 U CN 201220631652U CN 203054103 U CN203054103 U CN 203054103U
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- 238000012806 monitoring device Methods 0.000 claims abstract description 12
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- 238000004458 analytical method Methods 0.000 abstract description 18
- 238000005070 sampling Methods 0.000 abstract description 10
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- 238000013480 data collection Methods 0.000 abstract 3
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- 238000012986 modification Methods 0.000 description 6
- 238000007405 data analysis Methods 0.000 description 3
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- 238000010586 diagram Methods 0.000 description 3
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- 238000012544 monitoring process Methods 0.000 description 3
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910001416 lithium ion Inorganic materials 0.000 description 2
- 239000000741 silica gel Substances 0.000 description 2
- 229910002027 silica gel Inorganic materials 0.000 description 2
- 238000012896 Statistical algorithm Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
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- 229920001296 polysiloxane Polymers 0.000 description 1
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Abstract
The utility model discloses a handheld power quality analyzer which comprises a power quality monitoring device. The power quality monitoring device comprises a power supply module, a data collection module, a control module, a display module, an input module, a storage module and a transmission module, wherein the power supply module is used for providing power for the control module and the data collection module; the data collection module is used for collecting electric signals; the control module is used for processing the collected electric signals and storing the processed electric signals; the display module is used for displaying the processed and stored data; the input module is used for inputting key operation information of a user; the storage module is used for storing file data; and the transmission module is used for transmitting the file data to the analyzing device so as to be analyzed. The handheld power quality analyzer provided by the utility model has the characteristics of small size, detachability, movability, flexible wiring, rich functions, simple operation, high precision, high sampling rate and convenient carrying, provides a tool for detecting the power grid quality and electrical characteristics rapidly and comprehensively for electric power workers, realizes measurement and analysis of overall indexes of the power quality, is high in response speed and large in recording capacity, and can carry out comprehensive evaluation on the power quality.
Description
Technical Field
The utility model relates to the field of electronic technology, concretely relates to hand-held type electric energy quality analyzer.
Background
With the wide application and development of electronic power technology, a large number of nonlinear loads are added in a power supply system, so that the current and voltage waveforms of a power grid are distorted, and the phenomena of voltage fluctuation, flicker, three-phase imbalance and the like become more and more serious. Power accidents due to power quality problems often occur, and therefore, power quality monitoring equipment is required to detect the accidents.
Most of the existing power quality monitoring equipment are single-function products, most of the existing power quality monitoring equipment are single or detection equipment with a plurality of indexes, such as a power system harmonic measurement analysis device, a power system flicker measurement device, a power event recording device and the like, the overall index measurement and analysis of the power quality are difficult to realize, the response speed is low, the recording capacity is limited, and the comprehensive evaluation of the power quality cannot be further carried out.
SUMMERY OF THE UTILITY MODEL
In view of this, the present invention is to overcome the above-mentioned drawbacks, and provide a handheld power quality analyzer capable of measuring and analyzing the overall indicators of power quality and having multiple application and analysis functions. The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview and is intended to neither identify key/critical elements nor delineate the scope of such embodiments. Its sole purpose is to present some concepts in a simplified form as a prelude to the more detailed description that is presented later.
In order to achieve the above object, the utility model provides a handheld electric energy quality analyzer, include: power quality monitoring device and analytical equipment, wherein power quality monitoring device includes:
the power supply module is used for supplying power to the control module and the data acquisition module;
the data acquisition module is used for acquiring the electric signals;
the control module is used for processing and storing the acquired electric signals;
the input module is used for inputting or exporting information through keys;
the display module is used for displaying the processed and stored data;
the storage module is used for storing file data; and,
and the transmission module is used for transmitting the file data to the analysis device for analysis.
In some optional embodiments, a main chip of the control module is a dual-core MCU, and the chip integrates an ARM processor module and a DSP digital signal processing processor module, so as to meet the requirements of control and data processing of the device; the control module also comprises an FPGA; the display module comprises a liquid crystal screen and an alarm lamp; the memory module includes a memory chip.
In some optional embodiments, the data acquisition module adopts a high-speed a/D sampling chip to provide real-time data for the power quality analyzer by sampling once in 0.01 ms to 0.1 ms.
In some optional embodiments, the data acquisition module temporarily stores the data after high-speed a/D sampling in the FPGA through the current signals acquired by the voltage direct access and the current clamp.
In some optional embodiments, the ARM processor module processes and selectively transmits the data sampled by the data acquisition module to the DSP digital signal processing module; the DSP digital signal processing module analyzes various power parameter values of the data and determines whether the current data can generate events or logs according to various power parameter limit values of the equipment; the DSP digital signal processor module stores all the data in a storage chip.
In some optional embodiments, the ARM processor employs a linux operating system to control display, data file generation, file transmission, and the like of the handheld power quality analyzer device.
In some optional embodiments, the ARM processor generates a high-speed real-time data recording file and stores the file on the memory chip. The on-chip files may be selectively deleted manually.
In some optional embodiments, the ARM processor generates a basic data file, a harmonic data file and an event data file from the data generated by the DSP at a time interval specified by a user, and stores the files on the storage chip.
In some optional embodiments, the display module adopts a 640X480 resolution color liquid crystal screen, and data display is clear and intuitive.
In some optional embodiments, the lcd can display the current real-time data waveform, the analyzed power parameter data, the event and log information, and various configuration information of the handheld power quality analyzer device; and the user performs data analysis and parameter modification through a human-computer interaction interface.
In some optional embodiments, the input module adopts an integrated silica gel key, and data analysis and parameter modification can be performed through a human-computer interaction interface.
In some alternative embodiments, the power module supports both power input and battery power modes: when a power supply is input, the battery can be automatically charged; when no power supply is input, the battery power supply mode is automatically switched to.
In some optional embodiments, the transmission module comprises:
the USB interface is used for transmitting various data files to the USB flash disk;
and the wireless device is used for connecting various data files with the analysis device through the WIFI device.
In some alternative embodiments, the analysis device, running on an electronic computer, is a collection of multiple non-functional software programs. The electric energy quality monitoring device is used for analyzing the file data output by the electric energy quality monitoring device to generate an electric energy parameter list and a corresponding chart for judging the electric energy quality, such as a trend chart, a histogram, a statistical chart, an analysis report and the like.
It can be seen, the embodiment of the utility model provides a hand-held type electric energy quality analyzer has small, can dismantle, portable, can wiring in a flexible way, the function is abundant, easy and simple to handle, the precision is high, high sampling rate and convenient to carry's characteristics, provides the instrument of a quick comprehensive detection electric wire netting quality and electrical characteristics for the electric power staff to realized electric energy quality's overall index measurement and analysis, response speed is fast, the record is capacious, can carry out comprehensive evaluation to electric energy quality.
For the purposes of the foregoing and related ends, the one or more embodiments include the features hereinafter fully described and particularly pointed out in the claims. The following description and the annexed drawings set forth in detail certain illustrative aspects and are indicative of but a few of the various ways in which the principles of the various embodiments may be employed. Other benefits and novel features will become apparent from the following detailed description when considered in conjunction with the drawings and the disclosed embodiments are intended to include all such aspects and their equivalents.
Drawings
Fig. 1 is a structural diagram of the handheld power quality analyzer of the present invention.
Detailed Description
Example one
Referring to fig. 1, the embodiment of the utility model provides a hand-held type electric energy quality analyzer, include: electric energy quality monitoring device 10 and analytical equipment 11, wherein, electric energy quality monitoring device 10 includes: the device comprises a power supply module 101, a data acquisition module 102, a control module 103, a storage module 104, a transmission module 105, an input module 106 and a display module 107. Wherein,
the power supply module 101 is used for supplying power to the control module 103 and the data acquisition module 102;
optionally, the power module 101 supports two modes, namely a power input mode and a battery power supply mode (for example, a lithium ion battery power supply mode), and the two modes are automatically switched: when a power supply is input, the battery can be automatically charged; when no power supply is input, the battery power supply mode is automatically switched to. The lithium ion battery can be kept running for more than 6 hours after being fully charged.
A data acquisition module 102 for acquiring electrical signals;
optionally, the data acquisition module 102 adopts a high-speed a/D sampling chip, and provides real-time data for the power quality analyzer by sampling once in 0.01-0.1 milliseconds.
Optionally, the data after high-speed a/D sampling is temporarily stored in the FPGA by a current signal acquired by voltage direct access and current clamp. Specifically, the voltage signal is directly coupled to the data acquisition module 102, and the current signal is coupled through a current clamp. The voltage and current signals are sampled by high-speed A/D, 8 groups of data are generated every 200ms, and the data are read into a memory of the dual-core MCU through the FPGA. And the FPGA simultaneously carries out true effective value calculation.
Optionally, the data acquisition module 102 communicates with the control module 103 through an FPGA.
The control module 103 is used for processing and storing the acquired electric signals;
optionally, the control module 103 at least includes a dual-core chip and an FPGA; wherein, the dual-core chip includes at least: the ARM processor, the memory and the digital signal processor DSP; the ARM processor and the DSP may share a portion of the memory.
The ARM processor processes and selectively transmits the data of the FPGA to the DSP; the DSP analyzes various power parameter values of the data and determines whether the current data generates events or logs according to the limit values of the various power parameters; the DSP stores all the data in the memory.
The ARM processor communicates the selected data and the true valid value to the DSP processor. The DSP carries out FFT conversion on the data and generates various electric energy parameters such as harmonic data, fundamental data, power data, flicker data and the like. As shown in table 1:
TABLE 1
And the DSP also judges whether corresponding parameters need to generate events or logs according to the comparison of the current data and the set limit value of the handheld power quality analyzer equipment. The data is stored in the shared memory of the DSP processor and the ARM processor.
The ARM processor encapsulates effective data in the shared memory into files according to a file generation mode set by the handheld power quality analyzer device, and the files are stored in the storage chip.
And the ARM processor generates an event file and a log file according to the event and the log mark generated by the DSP processor. Wherein the current raw waveform data is recorded in the event file. The file is stored in the memory chip.
The ARM processor judges whether the handheld power quality analyzer device starts a wave recording function or not. If the system is started, the ARM processor encapsulates all waveform data obtained by high-speed A/D sampling into files. When the recording is started, the DSP does not analyze the data, namely various electric energy parameter data are not generated.
The ARM processor generates a high-speed real-time data recording file and stores the file on a storage card.
The ARM processor and the DSP share a part of memory of the shared memory;
the ARM processor generates basic data files, harmonic data files and event data files according to the data generated by the DSP at a time interval specified by a user, and stores the files on a memory card.
The ARM processor adopts a linux operating system to control display, data file generation, file transmission and the like of the handheld power quality analyzer device.
A storage module 104, configured to store file data;
an input module 106, configured to input user key information;
optionally, the input module 106 includes an integral silicone key.
Integral type silica gel button accords with ergonomic's operation custom, and its function has: by matching with the liquid crystal screen, the operation of checking data and exporting data can be facilitated for workers on the analyzer in a split screen mode; the input signals to the analyzer, event trigger conditions, file recording conditions, network, etc. are configured.
And a display module 107, configured to display the processed and stored data.
Optionally, the display module 107 includes: a liquid crystal screen and an alarm lamp; the lcd in the display module 107 may be an RGB interface.
The liquid crystal screen is provided with an oscilloscope, a parameter list, a vector diagram, a histogram, a trend diagram, file information, configuration modification and other interfaces. And the operator selects the display interface of the liquid crystal display through the keys. And the ARM processor transmits the data to be displayed to the liquid crystal display. The configuration of the hand-held power quality analyzer equipment can be modified by an operator through the keys and the liquid crystal display.
The liquid crystal screen can display the current real-time data waveform, the analyzed power parameter data, the event and the log information, and various configuration information of the handheld power quality analyzer; and the user performs data analysis and parameter modification through a human-computer interaction interface.
Alternatively, a 640X480 resolution color liquid crystal screen may be used.
A transmission module 105, configured to transmit the file data to the analysis device 11 for analysis.
Optionally, the transmission module 105 includes:
the USB interface is used for transmitting various data files to the USB flash disk;
and the wireless device is used for connecting various data files with the analysis device 11 through the WIFI device.
The USB interface can be connected with a USB flash disk. The current file information of the handheld power quality analyzer can be displayed on the liquid crystal screen, and an operator can copy the selected file into the USB flash disk.
The handheld power quality analyzer device may be connected to the network through the WIFI interface, and upload the selected file to the analysis apparatus 11.
Optionally, the WIFI interface and the USB interface are both driven by an ARM processor in the control module 103.
This hand-held type electric energy quality analyzer still includes:
the analysis device 11, which runs on the electronic computer, is a collection of a plurality of software programs that cannot function. The data transmission program is responsible for receiving the file data sent by the power quality monitoring device; the data storage program is used for storing the received file data in a file system of the electronic computer according to the time sequence and the file format in a classified and combined manner; the preliminary analysis program carries out format conversion and analysis on the file data, and all data can be cached in a memory in a classified manner; the statistical analysis program carries out comparison, operation and weighted statistics on all data in the memory according to a statistical algorithm; the display program displays the calculated data in the form of different types of charts and reports for viewing; the management program saves the operation, setting and adjustment of the operator as engineering files, and the management operation of the operator is facilitated.
Optionally, the analysis device 11 may be used to analyze the file data sent by the power quality monitoring device 10. A power parameter and corresponding map, such as a trend graph, histogram, statistical map, etc., for determining the quality of the power is generated.
It is therefore clear that the embodiment two provides hand-held type electric energy quality analyzer has small, can dismantle, portable, can wiring in a flexible way, the function is abundant, easy and simple to handle, the precision is high, high sampling rate and convenient to carry's characteristics, provides the instrument of a quick comprehensive detection electric wire netting quality and electrical characteristics for the electric power staff to realized electric energy quality's overall index measurement and analysis, response speed is fast, the record is capacious, can carry out comprehensive evaluation to electric energy quality. The method can provide basic parameters of electric energy quality such as voltage, current, active power, reactive power, frequency and the like in real time, and can analyze electric energy quality indexes such as harmonic waves, three-phase voltage unbalance, flicker and the like of the electric power system.
The disclosed embodiments are provided to enable any person skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the scope or spirit of the invention. The above-described embodiments are merely preferred embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included within the scope of the present invention.
Claims (8)
1. A hand-held power quality analyzer, comprising: a power quality monitoring device, wherein the power quality monitoring device comprises:
the power supply module is used for supplying power;
the data acquisition module is used for acquiring the electric signals;
the control module is used for processing and storing the acquired electric signals;
the input module is used for inputting or exporting information through keys;
the display module is used for displaying the processed and stored data;
the storage module is used for storing file data; and,
and the transmission module is used for transmitting the file.
2. The power quality analyzer of claim 1, wherein: the main chip of the control module is a dual-core MCU.
3. The power quality analyzer according to claim 1 or 2, characterized in that: the ARM processor module processes and selectively transmits the data sampled by the data acquisition module to the DSP digital signal processor module.
4. The power quality analyzer of claim 1, wherein: the data acquisition module acquires current signals through direct voltage access and current clamp, and data sampled by high-speed A/D are temporarily stored in the FPGA processing module.
5. The power quality analyzer of claim 1, wherein: the display module adopts a color liquid crystal screen with 640 multiplied by 480 resolution, and the current real-time data waveform, the analyzed power parameter data, the event and log information and various configurations of the equipment can be displayed on the liquid crystal screen.
6. The power quality analyzer of claim 1, wherein: the memory module is mainly composed of memory chips.
7. The power quality analyzer of claim 1, wherein: the power supply module supports two modes of power supply input and battery power supply; when a power supply is input, the battery can be automatically charged; when no power supply is input, the battery power supply mode is automatically switched to.
8. The power quality analyzer of claim 1, wherein: the transmission module comprises a USB interface and a wireless device, and can export various data files out of the equipment through a USB flash disk or a WIFI device.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201220631652 CN203054103U (en) | 2012-11-27 | 2012-11-27 | Handheld power quality analyzer |
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| CN 201220631652 CN203054103U (en) | 2012-11-27 | 2012-11-27 | Handheld power quality analyzer |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103389423A (en) * | 2013-07-23 | 2013-11-13 | 山西乐普节能技术有限公司 | Power quality analyzer |
| CN103901293A (en) * | 2013-12-05 | 2014-07-02 | 国家电网公司 | Power quality monitoring device based on intelligent substation |
| CN104459387A (en) * | 2014-11-25 | 2015-03-25 | 浙江工业大学 | Movable handheld type electric energy quality parameter routing inspection system |
| CN106850092A (en) * | 2016-12-12 | 2017-06-13 | 国网北京市电力公司 | Micro power radio communication unit electrical characteristic detection means and method |
| CN107632222A (en) * | 2017-11-17 | 2018-01-26 | 广东电网有限责任公司清远供电局 | A kind of portable load Analysis warning system and method |
| CN108535575A (en) * | 2018-05-24 | 2018-09-14 | 国网辽宁省电力有限公司电力科学研究院 | Power quality analysis device based on short-distance wireless communication technology |
| CN113725893A (en) * | 2021-08-02 | 2021-11-30 | 华能陕西定边电力有限公司 | Wind-powered electricity generation field power quality monitoring devices with multiple wireless communication mode |
| CN113933582A (en) * | 2021-10-15 | 2022-01-14 | 台州安耐杰电力设备有限公司 | Electric energy data analyzer capable of automatically calibrating |
| CN115015676A (en) * | 2022-07-11 | 2022-09-06 | 北京国电光宇机电设备有限公司 | Electric energy quality analyzer |
-
2012
- 2012-11-27 CN CN 201220631652 patent/CN203054103U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103389423A (en) * | 2013-07-23 | 2013-11-13 | 山西乐普节能技术有限公司 | Power quality analyzer |
| CN103901293A (en) * | 2013-12-05 | 2014-07-02 | 国家电网公司 | Power quality monitoring device based on intelligent substation |
| CN104459387A (en) * | 2014-11-25 | 2015-03-25 | 浙江工业大学 | Movable handheld type electric energy quality parameter routing inspection system |
| CN106850092A (en) * | 2016-12-12 | 2017-06-13 | 国网北京市电力公司 | Micro power radio communication unit electrical characteristic detection means and method |
| CN107632222A (en) * | 2017-11-17 | 2018-01-26 | 广东电网有限责任公司清远供电局 | A kind of portable load Analysis warning system and method |
| CN108535575A (en) * | 2018-05-24 | 2018-09-14 | 国网辽宁省电力有限公司电力科学研究院 | Power quality analysis device based on short-distance wireless communication technology |
| CN113725893A (en) * | 2021-08-02 | 2021-11-30 | 华能陕西定边电力有限公司 | Wind-powered electricity generation field power quality monitoring devices with multiple wireless communication mode |
| CN113933582A (en) * | 2021-10-15 | 2022-01-14 | 台州安耐杰电力设备有限公司 | Electric energy data analyzer capable of automatically calibrating |
| CN115015676A (en) * | 2022-07-11 | 2022-09-06 | 北京国电光宇机电设备有限公司 | Electric energy quality analyzer |
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