CN201477167U - Multifunctional power grid quality monitoring device - Google Patents
Multifunctional power grid quality monitoring device Download PDFInfo
- Publication number
- CN201477167U CN201477167U CN2009202030913U CN200920203091U CN201477167U CN 201477167 U CN201477167 U CN 201477167U CN 2009202030913 U CN2009202030913 U CN 2009202030913U CN 200920203091 U CN200920203091 U CN 200920203091U CN 201477167 U CN201477167 U CN 201477167U
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- monitoring device
- power supply
- precision
- quality monitoring
- electrical network
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- Y02B60/50—
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- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The utility model belongs to the technical field of power grid quality online monitoring devices, in particular to a multifunctional power grid quality monitoring device, which comprises a high-strength full-plastic outer casing, a high-efficient miniature switch power source, a digital signal processing chip, a high-capacity switching value outlet, an A/D analog-to-digital conversion circuit, a hardware real-time clock, a ferroelectric RAM, an RS485 communication interface circuit, a CPU running monitoring circuit, a GSM module, a signal filtering conditioning loop, a high-precision voltage reference, a high-precision current sensor and a high-precision resistor. The monitoring device has the advantages of reducing circuit reactive current, enlarging active power delivery capacity, decreasing circuit loss between a low voltage side and tail end load of a transformer, improving the quality of tail end voltage, relieving labor intensity and guaranteeing demands of power supply quality.
Description
Technical field
The utility model belongs to electrical network quality on-line monitoring equipment technical field, particularly a kind of multi-functional electrical network quality monitoring device.
Background technology
Along with increasingly sophisticatedization of power load and variation, particularly constantly pouring in of interference load and non-linear equipment had a strong impact on the quality of power supply of electric system; On the other hand, along with rapid development of high and new, many precision equipments and device are very responsive to the variation of the quality of power supply, and the instantaneous variation of the quality of power supply just may cause enormous economic loss.Therefore, no matter be electricity power enterprise, power supply enterprise, or electricity consumption enterprise, all press for the quality of power supply is monitored in real time and analyzed.
The real-time of electric power quality monitoring is had relatively high expectations, not only contain frequency, voltage, electric current, meritorious, idle, harmonic component, preface component etc., and the characteristic quantity frequency change of some collection is fast and complicated, as the fault traveling wave of transient state sudden change amount, high frequency etc., common acquiring and processing method is sampled to multichannel and is calculated the difficulty even be difficult to realize of seeming.In order to overcome above deficiency, satisfy the requirement of modern power systems, advanced person's Digital Signal Processing should be applied to and give full play to its powerful computing and parallel running processing power fast in the electric system, satisfy the requirements such as complicacy of electric power supervisory control real-time and Processing Algorithm, and be that technical foundation is established in the practice that continuous new theory that develops and new algorithm are applied to electric system.
Summary of the invention
It serves as the control core with DSP2806 type DSP that the purpose of this utility model provides a kind of, has designed that response is fast, time-delay is little and has not had the multi-functional electrical network quality monitoring device of phase deviation.
The purpose of this utility model is that the purpose of this utility model is that part is realized by the following technical programs.
Electrical network quality on-Line Monitor Device of the present utility model, it is characterized in that by the high strength plastic casing, be arranged on the high-level efficiency microswitch power supply in this high strength plastic casing, the joining digital signal processing chip of high-level efficiency microswitch power supply therewith, the joining high capacity switching value outlet of digital signal processing chip and described high-level efficiency microswitch power supply therewith respectively, the A/D analog to digital conversion circuit, the hardware real-time clock, ferroelectric RAM, the RS485 communication interface circuit, CPU operation monitoring circuit, gsm module is formed with described A/D analog to digital conversion circuit joining signal filtering conditioning loop and high-precision voltage reference respectively.
Described digital signal processing chip is the digital signal processing chip DSP 2806 with floating-point operation function.
Described microswitch power supply is a high-level efficiency microswitch power supply.
Described A/D analog to digital conversion circuit is 16 high-precision A/D analog to digital conversion circuit.
Described signal filtering conditioning loop links with high precision electric current transducer and precision resister respectively.
The utility model serves as the control core with DSP2806 type DSP, has designed that response is fast, time-delay is little and has not had the multi-functional electrical network quality monitoring device of phase deviation.In The whole control system, the conversion accuracy of signal gathering unit determines the quality of whole monitoring device performance.The high speed that adopts AD company to aim at electric power system design has 16 A/D converter AD7656 of built-in sampling and holding circuit, can improve the measuring accuracy of supervising device.The various parameters of electrical network are being analyzed and computing in conjunction with fast fourier transform by above two kinds of hardware, the result who obtains can show by big screen LCD.Can also be by the keyboard warning bound of adjusting.When the value of measuring reached the warning bound, device can adopt way of short messages by gsm module, warning message was dealt on the mobile phone of setting to report to the police.
The utility model is a kind of multi-functional electrical network quality monitoring device, the three-phase voltage of electrical network and electric current are handled by signal filtering conditioning loop, via high-resolution 16 analog to digital converters, the digital signal that can be handled analog quantity conversion position by CPU.
CPU utilizes its fast data processing power, signal is carried out fast Fourier analysis, calculate the each harmonic that electrical network contains and the effective value of electric current and voltage, simultaneously the various parameters of electrical network are monitored, comprising electric parameters such as flickering monitoring, three-phase imbalance monitoring, rate of qualified voltage, the out-of-limit judgement of voltage, active power, reactive power, phase measurements.
Particularly this device has following specific function, device is judged comparison to the definite value that presets in resulting data and the device, whether analyze each parameter out-of-limit, if take place out-of-limit, device will pass through gsm module, out-of-limit information is sent to by way of short messages on the mobile phone of appointment, to remind the timely handling failure of operations staff.
Advantage of the present utility model has:
1, can the various electric parameters of electrical network be monitored, and data can be carried out a distant place and transmit.
2, can carry out switching to capacitor according to the definite value of setting, system is carried out idle fast adjusting.
3, overtension in the time of can avoiding over-compensation or underloading causes device damage.
4, alleviate labor intensity of operating personnel.
5, guarantee the requirement of power supply quality.This device is used for reactive power compensation control to 32 high-performance singlechip technologies with floating-point operation function, utilize high-performance single-chip microcomputer data-handling capacity and reliable communication function fast and accurately, carry out the real-time exchange of data by RS485 interface and intelligent kilowatt-hour meter RS485 interface.Single-chip microcomputer compares according to real-time Communication for Power data that obtain and the definite value that is stored in the ferroelectric RAM, and out-of-limit to judge whether, the switching of control capacitor promptly and accurately carries out idle fast adjusting.
Description of drawings
Fig. 1 is a structured flowchart of the present utility model.
Embodiment
Below in conjunction with description of drawings embodiment of the present utility model.
As shown in Figure 1, electrical network quality on-Line Monitor Device of the present utility model, it is characterized in that by high strength plastic casing (not shown), be arranged on the microswitch power supply 1 in this high strength plastic casing, high-level efficiency microswitch power supply 1 joining digital signal processing chip 6 therewith, digital signal processing chip 6 and the 1 joining high capacity switching value outlet 5 of described high-level efficiency microswitch power supply therewith respectively, A/D analog to digital conversion circuit 3, hardware real-time clock 7, ferroelectric RAM 8, RS485 communication interface circuit 9, CPU operation monitoring circuit 10, gsm module 11 is formed with described A/D analog to digital conversion circuit 3 joining signal filtering conditioning loops 2 and high-precision voltage reference 4 respectively.
Described digital signal processing chip 6 is for having the digital signal processing chip DSP 2806 of floating-point operation function.
Described microswitch power supply 1 is a high-level efficiency microswitch power supply.Described A/D analog to digital conversion circuit 3 is 16 high-precision A/D analog to digital conversion circuit.
Described signal filtering conditioning loop 2 links with high precision electric current transducer and precision resister respectively.
Advantage of the present utility model has: both can reduce the circuit reactive current by this device to the automatic switching of capacitor, increase meritorious conveying capacity, reduce step down side to the line loss between terminal load, improve art terminal voltage quality, saving energy and decreasing loss, improve grid voltage quality, can alleviate again operations staff's labour intensity, guarantee the requirement of power supply quality. By gsm module, the mode of out-of-limit information exchange being crossed note sends on the mobile phone of appointment, to remind the timely handling failure of operations staff.
Claims (5)
1. multi-functional electrical network quality monitoring device, it is characterized in that by the high strength plastic casing, be arranged on the high-level efficiency microswitch power supply in this high strength plastic casing, the joining digital signal processing chip of high-level efficiency microswitch power supply therewith, the joining high capacity switching value outlet of digital signal processing chip and described high-level efficiency microswitch power supply therewith respectively, the A/D analog to digital conversion circuit, the hardware real-time clock, ferroelectric RAM, the RS485 communication interface circuit, CPU operation monitoring circuit, gsm module is formed with described A/D analog to digital conversion circuit joining signal filtering conditioning loop and high-precision voltage reference respectively.
2. multi-functional electrical network quality monitoring device according to claim 1 is characterized in that described digital signal processing chip is the digital signal processing chip DSP 2806 with floating-point operation function.
3. multi-functional electrical network quality monitoring device according to claim 1 is characterized in that described microswitch power supply is a high-level efficiency microswitch power supply.
4. multi-functional electrical network quality monitoring device according to claim 1 is characterized in that described A/D analog to digital conversion circuit is 16 high-precision A/D analog to digital conversion circuit.
5. multi-functional electrical network quality monitoring device according to claim 1 is characterized in that described signal filtering conditioning loop links with high precision electric current transducer and precision resister respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202030913U CN201477167U (en) | 2009-09-04 | 2009-09-04 | Multifunctional power grid quality monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202030913U CN201477167U (en) | 2009-09-04 | 2009-09-04 | Multifunctional power grid quality monitoring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201477167U true CN201477167U (en) | 2010-05-19 |
Family
ID=42413420
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202030913U Expired - Lifetime CN201477167U (en) | 2009-09-04 | 2009-09-04 | Multifunctional power grid quality monitoring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201477167U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102262200A (en) * | 2010-12-07 | 2011-11-30 | 鞍钢集团矿业公司 | Portable power quality and fault recording integrated device |
| CN103166451A (en) * | 2011-12-16 | 2013-06-19 | 富泰华工业（深圳）有限公司 | Switching power source circuit |
-
2009
- 2009-09-04 CN CN2009202030913U patent/CN201477167U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102262200A (en) * | 2010-12-07 | 2011-11-30 | 鞍钢集团矿业公司 | Portable power quality and fault recording integrated device |
| CN102262200B (en) * | 2010-12-07 | 2013-04-17 | 鞍钢集团矿业公司 | Portable power quality and fault recording integrated device |
| CN103166451A (en) * | 2011-12-16 | 2013-06-19 | 富泰华工业（深圳）有限公司 | Switching power source circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 114001 Anshan District, Liaoning, No. 219 Road, No. 39, Tiedong Patentee after: Anshan Iron and Steel Group Mining Co., Ltd. Address before: 114001 Anshan District, Liaoning, No. 219 Road, No. 39, Tiedong Patentee before: Angang Group Mine Company |
|
| CX01 | Expiry of patent term |
Granted publication date: 20100519 |
|
| CX01 | Expiry of patent term |