CN1485964A - Intellectual monitoring breaker - Google Patents
Intellectual monitoring breaker Download PDFInfo
- Publication number
- CN1485964A CN1485964A CNA021383294A CN02138329A CN1485964A CN 1485964 A CN1485964 A CN 1485964A CN A021383294 A CNA021383294 A CN A021383294A CN 02138329 A CN02138329 A CN 02138329A CN 1485964 A CN1485964 A CN 1485964A
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- China
- Prior art keywords
- circuit
- data acquisition
- breaker
- voltage
- intellectual monitoring
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- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
The invention refers to an intelligent monitoring breaker in low-voltage electric distributing cabinet in power supply field. Its main character: it organically integrates electric network monitoring, harmonic analysis, failure record and play and intelligent breaker, selects TMS320f206 as the kernel of collecting system, put emphasis on resolving the problem of measure fractional harmonics, uses DSP as kernel, and adopts the high speed data collecting technique to sample 6 channels synchronously.
Description
Technical field
The present invention relates to power a kind of device in the low-voltage distribution cabinet of field relates in particular to a kind of intellectual monitoring breaker.
Background technology
In the harm of electric power system for faults such as protection supply line and power-supply device are avoided transshipping, under voltage, short circuit, single-phase earthings, a kind of main switch is set in low-voltage distribution cabinet, be used to control and protect the low voltage power distribution network of rated current 630A～6300A.What existing main switch was advanced is that intelligent universal circuit breaker has the intelligent protection function, and selective protection is accurate, can improve power supply reliability, has open communication interface simultaneously, can be connected with host computer, carries out remote control, remote regulating etc.Its intelligent controller has overload long delay inverse time lag, short time delay inverse time lag, specified time, instantaneous function; Also have Presentation Functions such as setting current demonstration, operating current demonstration, each line voltage demonstration simultaneously, overload-alarm function, self-checking functions such as overheated self check, microcomputer self diagnosis.Though intelligent universal circuit breaker has had the function of control and protection low voltage power distribution network; but lack monitoring function; if will carry out on-line monitoring and harmonic analysis to circuit; so also need to increase many monitoring instruments and instrument; this not only will enlarge the volume of low-voltage distribution cabinet, and more can increase the complexity of cost and installation greatly.Now in the low voltage power distribution network, along with developing rapidly of power electronic technology, non-linear negative cutting come into operation in a large number, produces the higher harmonic current of amplitude, harmonic problem is on the rise in electric power system, and electric power system and power consumption equipment have been produced serious harm and influence.
Technical scheme
Purpose of the present invention only has relevant control and defencive function at existing intelligent universal circuit breaker; and lack the deficiency of monitoring function; especially come into operation in a large number at nonlinear load; in the electric power system the higher harmonic current of amplitude serious harm and influence system and the situation of power consumption equipment safe operation under; a kind of both had relevant control and defencive function, the intellectual monitoring breaker that can carry out permanently effective measurement, monitoring and inhibition again to harmonic wave are provided.
The objective of the invention is to solve: a kind of intellectual monitoring breaker by following technical proposals, comprise housing, the circuit breaker that is provided with in the housing, the current sensor of corresponding each phase line, the current signal treatment circuit that is connected with each current sensor, data acquisition circuit, trip gear, the communication interface that can be connected of display and setting with host computer, the input that it is characterized in that data acquisition circuit connects the voltage signal processing circuit that is provided with, the input of voltage signal processing circuit connects the voltage sensor that is arranged on each phase line, the output of data acquisition circuit inserts DSP and Single Chip Microcomputer (SCM) system, and the relevant interface of DSP and Single Chip Microcomputer (SCM) system is connected with the recorder data memory circuit of setting; Data acquisition circuit is selected TMS320f206 for use; Display adopts the LCD LCD.
The present invention is with power network monitoring, harmonic analysis, failure wave-recording and intelligent breaker are organic to be melted into a whole, select the core of TMS320f206 for use as acquisition system, traditional fourier transform algorithm is improved, emphasis solves the measurement problem of fractional harmonic, with DSP is core, adopt High speed data acquisition, 6 passages are carried out synchronized sampling, to gather 128 points weekly, each parameter of representing the quality of power supply then by the FFT computing: 2-31 subharmonic voltage containing ratio, 2-31 subharmonic current containing ratio, the total percent harmonic distortion of voltage, the total percent harmonic distortion of electric current, fundamental voltage, fundamental current, real available value of voltage, the electric current real effective, active power, reactive power, apparent power, power factor (PF), mains frequency and (nothing) merit electric energy etc. is arranged, each parameter can show in real time by the form of LCD LCD with data and waveform, record wave-wave shape can online playback, also can upload to host computer by communication interface.The present invention to analyze harmonic wave to the influence and the power network harmonic wave management of electric power system, guarantee that the safe operation of electric power system is very important, have good social benefit and economic benefit.
Description of drawings
Fig. 1 is monitoring of the present invention, control system structured flowchart
Among the figure, 1～3 is voltage sensor, and 4～6 is current sensor, and 7 is voltage signal processing circuit, 8 is the current signal treatment circuit, 9 is data acquisition circuit, and 10 is DSP and Single Chip Microcomputer (SCM) system, and 11 is LCD display, 12 is trip gear, 13 are the recorder data storage, and 14 is communication interface, and 15 is external host computer.
Embodiment
Be provided with in the housing of the present invention that intelligent breaker, intelligent breaker have overload long delay, short circuit short time delay, short circuit is instantaneous and earth fault delay protection function, overload long delay protection setting range is 1.05～1.3 times a rated current, and the time adjusting range is 15s～480s; Short circuit short time delay protection setting range is 1.3～10 times of rated current, and its time adjusting range is 0.1s～0.4s.The short circuit instantaneous protection is greater than 10 times of rated current, and the setting range of ground protection function is 0.2～0.8 times rated current, and ground connection time-delay setting range fault time is 0.1s～0.4s; Also be provided with current signal treatment circuit 8 in the housing, the input of current signal treatment circuit 8 has the current sensor 4～6 that inserts each phase line, be provided with voltage signal processing circuit 7, its input has the voltage sensor 1～3 that inserts each phase line, voltage signal processing circuit 7, the output of current signal treatment circuit 8 inserts data acquisition circuit 9 respectively, data acquisition circuit 9 adopts TMS320f206, the output of data acquisition circuit 9 inserts DSP and Single Chip Microcomputer (SCM) system 10, its each relevant interface can with LCD display 11, trip gear 12, recorder data memory circuit 13 connects, and communication interface 14 is set joins with host computer 15; The failure wave-recording effect is set to be when the harmonic wave severe overweight in the electrical network or overload, when short circuit causes circuit breaker tripping, the failure wave-recording function will write down every waveform of operation of power networks parameter at that time and front and back a period of time, adopt the scholarly forecast model, can note fault front and back each phase voltage of 2S (100 week), electric current line voltage, zero-sequence current waveform and relevant parameter.
Claims (3)
1, a kind of intellectual monitoring breaker, comprise housing, the circuit breaker that is provided with in the housing, the current sensor of corresponding each phase line, the current signal treatment circuit that is connected with each current sensor, data acquisition circuit, trip gear, the communication interface that can be connected of display and setting with host computer, the input that it is characterized in that data acquisition circuit connects the voltage signal processing circuit that is provided with, the input of voltage signal processing circuit connects the voltage sensor that is arranged on each phase line, and the output of data acquisition circuit inserts DSP and Single Chip Microcomputer (SCM) system, and the relevant interface of DSP and Single Chip Microcomputer (SCM) system is connected with the recorder data memory circuit of setting.
2, intellectual monitoring breaker according to claim 1 is characterized in that data acquisition circuit selects TMS320f206 for use.
3, intellectual monitoring breaker according to claim 1 is characterized in that display adopts the LCD LCD.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA021383294A CN1485964A (en) | 2002-09-25 | 2002-09-25 | Intellectual monitoring breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA021383294A CN1485964A (en) | 2002-09-25 | 2002-09-25 | Intellectual monitoring breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1485964A true CN1485964A (en) | 2004-03-31 |
Family
ID=34147214
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA021383294A Pending CN1485964A (en) | 2002-09-25 | 2002-09-25 | Intellectual monitoring breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1485964A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100464385C (en) * | 2004-07-30 | 2009-02-25 | 东南大学 | Detecting device of mixed power electronic circuit-breaker |
| CN101162851B (en) * | 2007-09-30 | 2010-06-16 | 常熟理工学院 | Controller of low pressure intelligent type circuit breakers with mutual verifying function |
| CN101039044B (en) * | 2007-04-17 | 2011-07-06 | 艾默生网络能源有限公司 | Electrical distribution monitoring system and monitoring method |
| CN102508076A (en) * | 2011-11-09 | 2012-06-20 | 东北大学 | Fault diagnosis device and method based on multi-agent system and wavelet analysis |
| CN101755319B (en) * | 2007-07-24 | 2013-02-13 | 伊顿公司 | Electrical switching apparatus, circuit interrupter and method of interrupting overcurrents of a power circuit |
| CN103498757A (en) * | 2013-10-12 | 2014-01-08 | 东南大学 | Marine energy resource generation monitoring device |
| CN101523226B (en) * | 2006-09-28 | 2017-03-22 | 通用电气公司 | System for power sub-metering |
| CN110632505A (en) * | 2019-08-21 | 2019-12-31 | 上海红檀智能科技有限公司 | Miniature circuit breaker and method for rapidly detecting, recording and analyzing transient power quality of miniature circuit breaker |
| CN110672971A (en) * | 2019-07-04 | 2020-01-10 | 广州供电局有限公司 | Built-in fault recording device of power distribution terminal |
-
2002
- 2002-09-25 CN CNA021383294A patent/CN1485964A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100464385C (en) * | 2004-07-30 | 2009-02-25 | 东南大学 | Detecting device of mixed power electronic circuit-breaker |
| CN101523226B (en) * | 2006-09-28 | 2017-03-22 | 通用电气公司 | System for power sub-metering |
| CN101039044B (en) * | 2007-04-17 | 2011-07-06 | 艾默生网络能源有限公司 | Electrical distribution monitoring system and monitoring method |
| CN101755319B (en) * | 2007-07-24 | 2013-02-13 | 伊顿公司 | Electrical switching apparatus, circuit interrupter and method of interrupting overcurrents of a power circuit |
| CN101162851B (en) * | 2007-09-30 | 2010-06-16 | 常熟理工学院 | Controller of low pressure intelligent type circuit breakers with mutual verifying function |
| CN102508076A (en) * | 2011-11-09 | 2012-06-20 | 东北大学 | Fault diagnosis device and method based on multi-agent system and wavelet analysis |
| CN102508076B (en) * | 2011-11-09 | 2013-09-25 | 东北大学 | Fault diagnosis device and method based on multi-agent system and wavelet analysis |
| CN103498757A (en) * | 2013-10-12 | 2014-01-08 | 东南大学 | Marine energy resource generation monitoring device |
| CN110672971A (en) * | 2019-07-04 | 2020-01-10 | 广州供电局有限公司 | Built-in fault recording device of power distribution terminal |
| CN110632505A (en) * | 2019-08-21 | 2019-12-31 | 上海红檀智能科技有限公司 | Miniature circuit breaker and method for rapidly detecting, recording and analyzing transient power quality of miniature circuit breaker |
| CN110632505B (en) * | 2019-08-21 | 2021-09-28 | 上海红檀智能科技有限公司 | Miniature circuit breaker and method for rapidly detecting, recording and analyzing transient power quality of miniature circuit breaker |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |