CN201204460Y - Automatic switching device for high-voltage capacitor - Google Patents
Automatic switching device for high-voltage capacitor Download PDFInfo
- Publication number
- CN201204460Y CN201204460Y CNU2008200131629U CN200820013162U CN201204460Y CN 201204460 Y CN201204460 Y CN 201204460Y CN U2008200131629 U CNU2008200131629 U CN U2008200131629U CN 200820013162 U CN200820013162 U CN 200820013162U CN 201204460 Y CN201204460 Y CN 201204460Y
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- signal processing
- processing chip
- circuit
- digital signal
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
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Abstract
The utility model provides a auto switching device for high voltage capacitor, comprising a switching power supply, a digital signal processing chip, a switching value exit, a voltage reference, an analog-to-digital conversion circuit, a real time clock circuit, a ferro-electric memory, a signal filtering and regulating loop, a liquid crystal display, a communication interface circuit, an intelligent watt-hour meter and an operation monitoring circuit, wherein the digital signal processing chip is connected with the analog-to-digital conversion circuit, the liquid crystal display, the real time clock circuit and the ferro-electric memory by a data bus and an address bus, the voltage reference is connected with the switching value exit on the analog-to-digital conversion circuit by output terminal, and is connected with the communication interface circuit by a serial communication terminal, the operation monitoring circuit is connected to a reset pin of the digital signal processing chip, the signal filtering and regulating loop is connected with the analog-to-digital conversion circuit by signal line. The device of the utility model can satisfy the require of electric supply quality, avoid equipment damage because of over high voltage when over compensation or light loading, and greatly reduce labor strength of operators.
Description
Technical field
The utility model relates to the electric network reactive compensation technical field, particularly a kind of high-voltage capacitor automatic switching device.
Background technology
In the modern power network, inductive loads such as motor occupy quite big proportion.They also need to absorb a large amount of reactive powers when consuming active power.The appearance of reactive power not only causes generator output to descend, and has reduced equipment for power transmission and distribution efficient, but also has increased network loss, has a strong impact on power supply quality.Address this problem, major measure is increase-volume at present, promptly enlarges transformer and distribution line capacity, thereby improves power supply capacity.But increase-volume is invested greatly on the one hand, and the construction work amount is big, and the cycle is long, because terminal idle still the need provided by low-pressure side centralized compensation system, the transmission line utilization ratio is still lower on the other hand.Therefore, effectively reduce the circuit reactive current, increase meritorious conveying capacity, reduce step down side to the line loss between terminal load, improving the terminal voltage quality is the important topic that improves grid power transmission efficient.At present, it is well-known saving energy and decreasing loss that power transmission and transformation enterprise adopts power capacitor to carry out reactive power compensation, improve one of grid voltage quality most convenient, most economical effective method, but because the manual switching that adopts more, not only the saving energy and decreasing loss effect is undesirable, influence the power supply effect, but also increased operations staff's labour intensity.
Summary of the invention
The purpose of this utility model is by the automatic switching to high-voltage capacitor, both can reduce the circuit reactive current, increase meritorious conveying capacity, reduce step down side to the line loss between terminal load, improve the terminal voltage quality, saving energy and decreasing loss, improve grid voltage quality, can alleviate operations staff's labour intensity again, guarantee the requirement of power supply quality.
The purpose of this utility model realizes by following technical scheme:
The utility model 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 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 carries out idle fast adjusting timely and accurately, improves the device action real-time.
High-voltage capacitor automatic switching device of the present utility model, it is characterized in that comprising digital signal processing chip, the switching value output interface that is connected of digital signal processing chip therewith respectively, analog to digital conversion circuit, LCDs, real time clock circuit, ferroelectric memory, the RS485 interface, the operation monitoring circuit of digital signal processing chip CPU, the signal filtering modulate circuit that is connected with described analog to digital conversion circuit, reference voltage, the intelligent kilowatt-hour meter that is connected with described RS485 interface is respectively with digital signal processing chip, the switching value output interface, analog to digital conversion circuit, LCDs, real time clock circuit, ferroelectric memory, the RS485 interface, CPU operation monitoring circuit, the Switching Power Supply that the signal filtering modulate circuit is connected.
Described digital signal processing chip links to each other with analog to digital conversion circuit, LCDs, real time clock circuit, ferroelectric memory with address bus by data/address bus, digital signal processing chip is connected with the switching value outlet by delivery outlet, and the operation monitoring circuit is received on the reseting pin of digital signal processing chip.
The serial communication port of described digital signal processing chip is connected with the RS485 interface, and signal filtering conditioning loop links to each other with analog to digital conversion circuit by holding wire.
Described digital signal processing chip is DSP2806.
Described ferroelectric memory is FM3104.
The utility model can carry out dynamic surveillance to the various electric parameters of electrical network, data are carried out a distant place to be transmitted, according to the definite value of setting capacitor is carried out switching, system is carried out idle fast adjusting, guarantee the requirement of power supply quality, and overtension can avoid overcompensation or underloading the time, cause device damage.Meanwhile, also can alleviate labor intensity of operating personnel greatly.
Description of drawings
Fig. 1 is a principle schematic of the present utility model.
Embodiment
Below in conjunction with description of drawings embodiment of the present utility model:
As shown in Figure 1, high-voltage capacitor automatic switching device of the present utility model, it is characterized in that comprising digital signal processing chip 6, the switching value output interface 5 that is connected of digital signal processing chip 6 therewith respectively, analog to digital conversion circuit 3, LCDs 7, real time clock circuit 8, ferroelectric memory 9, RS485 interface 10, the operation monitoring circuit 12 of digital signal processing chip CPU, the signal filtering modulate circuit 2 that is connected with described analog to digital conversion circuit 3, reference voltage 4, the intelligent kilowatt-hour meter 11 that is connected with described RS485 interface 10 is respectively with digital signal processing chip 6, switching value output interface 5, analog to digital conversion circuit 3, LCDs 7, real time clock circuit 8, ferroelectric memory 9, RS485 interface 10, CPU operation monitoring circuit 12, the Switching Power Supply 1 that signal filtering modulate circuit 2 is connected.
Described digital signal processing chip 6 links to each other with analog to digital conversion circuit 3, LCDs 7, real time clock circuit 8, ferroelectric memory 9 with address bus by data/address bus, digital signal processing chip 6 is connected with switching value outlet 5 by delivery outlet, and CPU operation monitoring circuit 12 is received on the reseting pin of digital signal processing chip 6.
The serial communication port of described digital signal processing chip 6 is connected with RS485 interface 10, and signal filtering conditioning loop 2 links to each other with analog to digital conversion circuit 3 by holding wire.
Described digital signal processing chip 6 is DSP2806.
Described ferroelectric memory 9 is FM3104.
Described communication interface circuit is connected with intelligent kilowatt-hour meter by the RS485 interface.
Switching Power Supply 1 is arranged, draw together digital signal processing chip 6, switching value outlet 5, voltage reference 4, analog to digital conversion circuit 3, real time clock circuit 8, ferroelectric memory 9, signal filtering conditioning loop 2, LCDs 7, communication interface circuit 10, intelligent kilowatt-hour meter 11, operation monitoring circuit 12, digital signal processing chip 6 is by data/address bus and address bus and touch number conversion circuit 3, LCDs 7, real time clock circuit 8, ferroelectric memory 9 links to each other, voltage reference 4 is connected on the analog to digital conversion circuit 3, signal filtering conditioning loop 2 links to each other with analog to digital conversion circuit 3 by holding wire, digital signal processing chip 6 is connected with switching value outlet 5 by delivery outlet, the serial communication port of digital signal processing chip 6 is connected with communication interface circuit 10, and operation monitoring circuit 12 is received on the reseting pin of digital signal processing chip 6.
Described digital signal processing chip 6 is DSP2806.
Described ferroelectric memory 9 is FM3104.
The utility model uses high precision electric current transducer and precision resister respectively voltage and current to be gathered, the analog quantity that collects is carried out filtering by signal filtering conditioning loop 2, converted to digital signal through filtered analog signal by analog to digital conversion circuit 3, utilize afterwards have the floating-point operation function 6 pairs of high-performance single-chip microcomputer digital signal processing chips the voltage and current signal of discretization carry out weekly 64 collections of ripple, the digital quantity that collects is carried out Fourier transform, calculate the electric current of electrical network, voltage, active power, reactive power, apparent power, power factor, electric power system parameters such as frequency, the voltage harmonic value and the electric harmonic value of electric weight and 1-31 times.
Device adopts communication interface circuit 10 and the intelligent kilowatt-hour meter 11 with RS485 communication interface to communicate simultaneously, carries out the judgement of capacitor switching by the data such as voltage, electric current and power factor that read electrical network from intelligent kilowatt-hour meter 11.When system power factor or voltage are out-of-limit, digital signal processing chip 6 is compared with predefined definite value and time limit according to calculating system parameters in real time or reading system parameters by communication mode at intelligent kilowatt-hour meter 11 places, judge whether out-of-limitly, whether decision needs switched capacitor.
When surpassing the scope of the definite value of storing in the ferroelectric memory 9 when the data that calculate or by the data that communication mode obtains, digital signal processing chip 6 exports the switching of 5 control capacitors timely and accurately by switching value, carry out idle fast adjusting.Ferroelectric memory 9 capacity are 16Kbyte, and the storage data are reliable, non-volatile, characteristics such as can carry out that electricity is wiped, data can be preserved more than 100 years, erasable number of times without limits.
Claims (5)
1, a kind of high-voltage capacitor automatic switching device, it is characterized in that comprising digital signal processing chip, the switching value output interface that is connected of digital signal processing chip therewith respectively, analog to digital conversion circuit, LCDs, real time clock circuit, ferroelectric memory, the RS485 interface, the operation monitoring circuit of digital signal processing chip CPU, the signal filtering modulate circuit that is connected with described analog to digital conversion circuit, reference voltage, the intelligent kilowatt-hour meter that is connected with described RS485 interface is respectively with digital signal processing chip, the switching value output interface, analog to digital conversion circuit, LCDs, real time clock circuit, ferroelectric memory, the RS485 interface, CPU operation monitoring circuit, the Switching Power Supply that the signal filtering modulate circuit is connected.
2, a kind of high-voltage capacitor automatic switching device according to claim 1, it is characterized in that described digital signal processing chip links to each other with analog to digital conversion circuit, LCDs, real time clock circuit, ferroelectric memory with address bus by data/address bus, digital signal processing chip is connected with the switching value outlet by delivery outlet, and the operation monitoring circuit is received on the reseting pin of digital signal processing chip.
3, a kind of high-voltage capacitor automatic switching device according to claim 1 is characterized in that the serial communication port of described digital signal processing chip is connected with the RS485 interface, and signal filtering conditioning loop links to each other with analog to digital conversion circuit by holding wire.
4, a kind of high-voltage capacitor automatic switching device according to claim 1 is characterized in that described digital signal processing chip is DSP2806.
5, a kind of high-voltage capacitor automatic switching device according to claim 1 is characterized in that described ferroelectric memory is FM3104.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200131629U CN201204460Y (en) | 2008-05-26 | 2008-05-26 | Automatic switching device for high-voltage capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200131629U CN201204460Y (en) | 2008-05-26 | 2008-05-26 | Automatic switching device for high-voltage capacitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201204460Y true CN201204460Y (en) | 2009-03-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200131629U Expired - Lifetime CN201204460Y (en) | 2008-05-26 | 2008-05-26 | Automatic switching device for high-voltage capacitor |
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| Country | Link |
|---|---|
| CN (1) | CN201204460Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103166451A (en) * | 2011-12-16 | 2013-06-19 | 富泰华工业（深圳）有限公司 | Switching power source circuit |
-
2008
- 2008-05-26 CN CNU2008200131629U patent/CN201204460Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 | ||
| ASS | Succession or assignment of patent right |
Owner name: MINING DESIGN AND RESEARCH INSTITUTE, ANSHAN IRON Free format text: FORMER OWNER: ANGANG GROUP MINE COMPANY Effective date: 20101126 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 114001 NO.39, ERYIJIU ROAD, TIEDONG DISTRICT, ANSHAN CITY, LIAONING PROVINCE TO: 114002 NO.27, LVHUA STREET, TIEDONG DISTRICT, ANSHAN CITY, LIAONING PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20101126 Address after: 114002, 27 East Green Street, Liaoning, Anshan Patentee after: Mining Design and Research Institute of Anshan Iron and Steel Group Address before: 114001 Anshan District, Liaoning, No. 219 Road, No. 39, Tiedong Patentee before: Angang Group Mine Company |
|
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 114002, 27 East Green Street, Liaoning, Anshan Patentee after: Anshan Iron and Steel Group Mining Design and Research Institute Co., Ltd. Address before: 114002, 27 East Green Street, Liaoning, Anshan Patentee before: Mining Design and Research Institute of Anshan Iron and Steel Group |
|
| CX01 | Expiry of patent term |
Granted publication date: 20090304 |
|
| CX01 | Expiry of patent term |