CN103439606A - Portable low-voltage multi-path outgoing cable three-phase load collecting recorder - Google Patents
Portable low-voltage multi-path outgoing cable three-phase load collecting recorder Download PDFInfo
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- CN103439606A CN103439606A CN2013103826752A CN201310382675A CN103439606A CN 103439606 A CN103439606 A CN 103439606A CN 2013103826752 A CN2013103826752 A CN 2013103826752A CN 201310382675 A CN201310382675 A CN 201310382675A CN 103439606 A CN103439606 A CN 103439606A
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Abstract
The invention discloses a portable low-voltage multi-path outgoing cable three-phase load collecting recorder and relates to the technical field of cable three-phase load detection. The portable low-voltage multi-path outgoing cable three-phase load collecting recorder comprises a shell body. A main control CPU system, a plurality of detection branch circuits, a man-machine interface, a communication interface, an SD storage card interface and a CF card interface are arranged in the shell body, wherein the plurality of detection branch circuits are connected with the main control CPU system and used for collecting three-phase voltages and three-phase currents, and the man-machine interface, the communication interface, the SD storage card interface and the CF card interface are connected with the main control CPU system. Each detection branch circuit is connected with a test interface, one end of a current clamp and one end of a voltage clamp are connected with the test interface, the other end of the current clamp and the other end of the voltage clamp are connected with a measured load, and therefore the three-phase voltages, the three-phase currents, active power, reactive power and the unbalance degree of the three-phase currents are measured. The portable low-voltage multi-path outgoing cable three-phase load collecting recorder has the advantages that the load change condition and the load unbalance condition of each outgoing cable of a transformer during 24 hours can be recorded, and the data support can be provided for comprehensive judgment and adjustment of the three-phase balance condition.
Description
Technical field
The present invention relates to cable three-phase load detection technique field, a kind of portable community low pressure multichannel outlet cable three-phase load pen recorder specifically, but the device of continuous recording cell load situation of change and uneven situation.
Background technology
The low voltage switch that at present the community case becomes mostly be there is no a four remote control function mould the shell switch, can't continuous recording load variations situation.Whether low-pressure line-outgoing load exceeds standard and night in summer annually of only depending on tour once of perambulator person two months and rules regulation measures load and be difficult to judgement and hold its load condition.Therefore cause and make an inspection tour the personnel labor intensity increase, but can't really grasp load actual change situation, to open load, can't provide accurate foundation.The electric power detecting instrument is more at present, such as power quality analyzer etc., but generally only can measure single channel, and cost is higher simultaneously, and additional function is also more, but does not have for special portable community low-pressure line-outgoing cable detection and the three-phase load pen recorder of patrolling and examining use.
Summary of the invention
There is no the deficiency for the low-pressure line-outgoing cable detection of patrolling and examining use and three-phase load record in order to overcome existing electric power detecting instrument, the invention provides a kind of detection record device, this device can not only detected cells low-pressure line-outgoing cable, and can easily record three-phase load.
The present invention realizes with following technical scheme: a kind of Portable low-pressure multichannel outlet cable three-phase load acquisition and recording instrument, comprise a housing, one master cpu system is arranged in housing, a plurality of master cpu systems connect for gathering the monitoring branch road of three-phase voltage, electric current, the man-machine interface be connected with the master cpu system, communication interface, SD storage bayonet socket are connected with the load of CF card, for measuring three-phase voltage, electric current, active power, reactive power, three-phase current unbalance degree.
The invention has the beneficial effects as follows: can record 24 hours load variations of each road outlet of transformer and uneven situation, can be comprehensive judgement and regulating three-phase equilibrium provides data supporting.
The accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is hardware mechanism schematic diagram of the present invention.
In figure: 1, detection branch, 2, man-machine interface, 3, communication interface, 4, the storage bayonet socket, 11, signal conversion module, 12, signal conditioning circuit, 13, the A/D modular converter, 14, Single Chip Microcomputer (SCM) system.
Embodiment
As shown in Figure 1, Portable low-pressure multichannel outlet cable three-phase load acquisition and recording instrument has a housing, one master cpu system is arranged in housing, a plurality of connection with the master cpu system for gathering three-phase voltage, the monitoring branch road 1 of electric current, each detection branch is connected with test interface, current clamp, voltage clamp one end test interface and be connected, the other end is connected with tested load, for measuring three-phase voltage, electric current, active power, reactive power, three-phase current unbalance degree.The man-machine interface 2 that the master cpu system connects, communication interface 3 and storage bayonet socket 4.
Man-machine interface 2 consists of keyboard and liquid crystal display, communication interface 3 adopts USB, storage bayonet socket 4 adopts SD storage bayonet socket and CF card interface, main storage unit can be selected SD card or CF card, file system adopts FAT32, the file of storage adopts the CSV form, can directly with OFFICE-EXCEL, open on computers.
Detection branch 1 comprises the signal conditioning circuit 12 that signal conversion module 11 is connected with signal conversion module 11, the A/D modular converter 13 be connected with signal conditioning circuit 12, be connected 13 Single Chip Microcomputer (SCM) system 14 with the A/D modular converter, the single-chip microcomputer of master cpu system and each branch road adopts the inner high speed communication bus to pass mutually data.Test interface is connected with signal conversion module 11, and the signal that current clamp and voltage clamp will gather is separately processed rear Single Chip Microcomputer (SCM) system 14 by signal conversion module 11, signal conditioning circuit 12, A/D modular converter 13 successively and carried out calculation process.The effect of signal conversion module 11 and signal conditioning circuit 12 is that the three-phase current in the branch road of exploiting field is converted to little current signal for the first time by mutual inductor, little current signal is converted to the small voltage signal by another mutual inductor, and now the small voltage signal is realized the signal filtering processing by modulate circuit 12.In the present embodiment, signal conversion module 11 adopts current transformer.
The present invention adopts the multi-CPU system structure, the total digitalization sampling, and for guaranteeing measuring speed and precision, each branch road measuring unit is by independently Single Chip Microcomputer (SCM) system control.The master cpu system adopts high-performance processor STM32F103, based on 32 embedded platforms, adopts totally digitilized treatment technology.Adopt SDRAM unloading technology to solve the technical requirement that Real-time Collection calculates storage; Instrument is positioned over by the substation in zone transformer, condition of work is severe, separately because its portability causes adopting the shielding interference protection measure, in addition because needs are measured the multichannel outlet simultaneously, cause measuring channel transmission line longer, therefore adopt multiple Anti-Jamming Technique to guarantee the accuracy of data; Uneven calculating need to realize the three-phase synchronous collection of voltage, electric current and require measuring accuracy higher, adopts fast algorithm to solve the real time problems of measuring.
This device can carry out continuous coverage, real-time storage to situations such as the voltage of low-pressure line-outgoing, three-phase and four-line electric current, active power, reactive power, three-phase imbalances.By load Analysis and uneven analysis software, the data of utilizing this measurement device to obtain, carry out statistical study, realizes the functions such as trend map, overload alarm, report gather.
Claims (4)
1. a Portable low-pressure multichannel outlet cable three-phase load acquisition and recording instrument, it is characterized in that: comprise a housing, one master cpu system is arranged in housing, a plurality of connection with the master cpu system for gathering the detection branch (1) of three-phase voltage, electric current, the man-machine interface (2) be connected with the master cpu system, communication interface (3), storage bayonet socket (4); Each detection branch is connected with test interface, and current clamp, voltage clamp one end are connected with test interface, and the other end is connected with tested load, for measuring three-phase voltage, electric current, active power, reactive power, three-phase current unbalance degree.
2. Portable low-pressure multichannel outlet cable three-phase load acquisition and recording instrument according to claim 1, it is characterized in that: described detection branch (1) comprises signal conversion module (11), the signal conditioning circuit (12) be connected with signal conversion module (11), the A/D modular converter (13) be connected with signal conditioning circuit (12), the Single Chip Microcomputer (SCM) system (14) that is connected (13) with the A/D modular converter, test interface is connected with signal conversion module (11), the signal that current clamp and voltage clamp will gather separately is successively by modular converter (11), signal conditioning circuit (12), A/D modular converter (13) is processed rear Single Chip Microcomputer (SCM) system (14) and is carried out calculation process, the single-chip microcomputer of master cpu system and each branch road adopts the inner high speed communication bus to pass mutually data.
3. Portable low-pressure multichannel outlet cable three-phase load acquisition and recording instrument according to claim 2, is characterized in that: described signal conversion module employing current transformer.
4. according to the described Portable low-pressure multichannel of claim 1-3 any one outlet cable three-phase load acquisition and recording instrument, it is characterized in that: described storage bayonet socket (4) comprises SD storage bayonet socket and CF card interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103826752A CN103439606A (en) | 2013-08-28 | 2013-08-28 | Portable low-voltage multi-path outgoing cable three-phase load collecting recorder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103826752A CN103439606A (en) | 2013-08-28 | 2013-08-28 | Portable low-voltage multi-path outgoing cable three-phase load collecting recorder |
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| CN103439606A true CN103439606A (en) | 2013-12-11 |
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| CN2013103826752A Pending CN103439606A (en) | 2013-08-28 | 2013-08-28 | Portable low-voltage multi-path outgoing cable three-phase load collecting recorder |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104062496A (en) * | 2014-07-03 | 2014-09-24 | 国家电网公司 | Portable mobile electric testing recorder and optimization method therefor |
| CN109541361A (en) * | 2018-12-28 | 2019-03-29 | 深圳供电局有限公司 | Device and method for early warning heavy load of branch load on low voltage side of bus |
| CN111381626A (en) * | 2018-12-29 | 2020-07-07 | 江阴矽捷电子有限公司 | Power supply circuit regulation and control management system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006308509A (en) * | 2005-05-02 | 2006-11-09 | Fuji Electric Systems Co Ltd | Three-phase three-wire system load simulator |
| CN102636717A (en) * | 2012-04-27 | 2012-08-15 | 江苏省电力公司徐州供电公司 | Portable three-phase load acquisition recorder for low-pressure multipath outgoing cable |
| CN202548244U (en) * | 2012-04-27 | 2012-11-21 | 江苏省电力公司徐州供电公司 | Portable three-phase load acquisition recording device for low-voltage multi-path outgoing cable |
-
2013
- 2013-08-28 CN CN2013103826752A patent/CN103439606A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006308509A (en) * | 2005-05-02 | 2006-11-09 | Fuji Electric Systems Co Ltd | Three-phase three-wire system load simulator |
| CN102636717A (en) * | 2012-04-27 | 2012-08-15 | 江苏省电力公司徐州供电公司 | Portable three-phase load acquisition recorder for low-pressure multipath outgoing cable |
| CN202548244U (en) * | 2012-04-27 | 2012-11-21 | 江苏省电力公司徐州供电公司 | Portable three-phase load acquisition recording device for low-voltage multi-path outgoing cable |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104062496A (en) * | 2014-07-03 | 2014-09-24 | 国家电网公司 | Portable mobile electric testing recorder and optimization method therefor |
| CN104062496B (en) * | 2014-07-03 | 2017-03-22 | 江苏省电力公司宿迁供电公司 | Portable mobile electric testing recorder and optimization method therefor |
| CN109541361A (en) * | 2018-12-28 | 2019-03-29 | 深圳供电局有限公司 | Device and method for early warning heavy load of branch load on low voltage side of bus |
| CN111381626A (en) * | 2018-12-29 | 2020-07-07 | 江阴矽捷电子有限公司 | Power supply circuit regulation and control management system |
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Application publication date: 20131211 |