CN203377603U - Dynamic reactive compensation controller - Google Patents
Dynamic reactive compensation controller Download PDFInfo
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- CN203377603U CN203377603U CN201320405937.8U CN201320405937U CN203377603U CN 203377603 U CN203377603 U CN 203377603U CN 201320405937 U CN201320405937 U CN 201320405937U CN 203377603 U CN203377603 U CN 203377603U
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- controller
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- var compensation
- compensation according
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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
Abstract
The utility model discloses a dynamic reactive compensation controller which comprises a minimum system, and a power supply module, an electrical network parameter measuring module, a switching control module, a communication module and a man-machine conversation module that are all connected with the minimum system. The minimum system, a 32-bit microprocessor embedded system, comprises a clock circuit, a reset circuit, a JTAG interface, a Flash memory and an SDRAM memory that are all connected with a processor. The dynamic reactive compensation controller can achieve functions of collection, computing and control during a period, and has the characteristics of high stability, high measuring precision and long service life.
Description
Technical field
The utility model relates to a kind of idle compensating control, more particularly, relates in particular to the reactive power in a kind of Real-time Collection low-voltage network, carries out the Controller for Dynamic VAR Compensation of reactive power automatic compensation.
Background technology
Along with scientific and technical development, increasing electronic product arises at the historic moment, and people more and more rely on electric energy, and the electric energy demand is increasing, and the tellurian energy is limited, has energy-conservationly become a global topic.Electric power is the main secondary energy sources of China, and in electric power system, the use of a large amount of perceptual power consumption equipments makes the reactive power loss of electrical network serious, wastes a large amount of electric energy.The merit compensation is the basic demand of power system operation, in order to realize the reactive balance in power system operation, and idle compensating that must be required to various electric loads.Therefore, how to carry out reactive power compensation, improve power factor (PF) and become whole power industry and at first need the problem solved.
Yet, by market survey, find that the idle compensating control used in existing power equipment exists that the switching precision is not high, service life of equipment is short, the phenomenon of selling at exorbitant prices, affects its universal use greatly.
The utility model content
The purpose of this utility model is to provide the Controller for Dynamic VAR Compensation of a kind of low cost, high accuracy, long service life for above-mentioned the deficiencies in the prior art.
For achieving the above object, Controller for Dynamic VAR Compensation provided by the utility model, comprise minimum system and the power module, Power network parameter measureing module, switching control module, communication module and the human-computer dialogue module that are connected with minimum system, described minimum system is the 32-bit microprocessor embedded system, comprise the clock circuit, reset circuit, jtag interface, Flash memory and the SDRAM memory that are connected with processor, described processor is 32 ARM microprocessors.
In above-mentioned each module, power module provides power supply in sheet by the rectification to outside power supply for controller; Include signal conditioning circuit and connected A/D converter in the Power network parameter measureing module; Include zero transition procedue low-voltage dynamic reactive power compensating circuit in the switching control module, adopt the PWM isolation method to drive; Communication module is connected with minimum system by the RS232/RS485 interface; Include touch-switch keyboard circuit and graphic lcd display controller in the human-computer dialogue module, wherein, the touch-switch keyboard circuit is connected with processor by a slice isolation drive chip, realizes keyboard entry function; The graphic lcd display controller is dot matrix graphic lcd display controller, by 8 parallel-by-bit data/address buss and one group of control bus, carries out the instruction and data transmission.
The utility model has been realized the functions such as automatic sampling calculating, Reactive Power Automatic Regulating, fault alarm protection, liquid crystal display after adopting said structure, and can with upper machine communication, the more historical data of storing queries.By Harmonics Calculation, setting voltage, current distortion rate threshold value, the pre-classification switched capacitor, solved other idle compensating control due to the problem of ignoring load kurtosis and harmonic wave and causing service life of equipment to reduce.On algorithm, adopt the fft algorithm of real sequence, by the Timer_A tracking cycle, and by Software for Design calculate, compensation of phase is poor, improved certainty of measurement, guaranteed the accuracy of controlling.By such design, system can complete collection, calculating, control function in one-period, and reaction speed and measurement, control precision all are greatly enhanced.
The accompanying drawing explanation
Fig. 1 is system principle diagram of the present utility model;
The circuit module figure that Fig. 2 is minimum system in Fig. 1.
Embodiment
Below in conjunction with the embodiment in accompanying drawing, the utility model is described in further detail, but do not form any restriction of the present utility model.
Consult shown in Fig. 1 and Fig. 2, a kind of Controller for Dynamic VAR Compensation provided by the utility model, comprise minimum system and the power module be connected with minimum system, the Power network parameter measureing module, the switching control module, communication module, and human-computer dialogue module, described minimum system is the 32-bit microprocessor embedded system, comprise the clock circuit be connected with processor, reset circuit, jtag interface, Flash memory (comprising NOR Flash and NAND Flash) and SDRAM memory, described processor is 32 ARM microprocessors, what in the present embodiment, use is the S3C44B0X microprocessor of SAMSUNG company.
Described power module for the utility model controller provides power supply in sheet, has good EMC performance by the rectification to outside power supply, and super wide input voltage range, generate heat little, working stability, and reliability is high.
Include signal conditioning circuit and connected A/D converter in described Power network parameter measureing module, the A/D converter that described A/D converter is 12 8 passages, the voltage and current signal in electric power system is delivered to A/D converter and is carried out analog-to-digital conversion after instrument transformer, signal conditioning circuit preliminary treatment.
Include the zero transition procedue dynamic reactive compensation circuit in described switching control module, adopt the PWM isolation method to drive, using great-power electronic electrical device (as thyristor) as execution unit, in the situation that capacitor is chosen in the system zero transient process and constantly controls the dynamic opening-closing capacitor bank of thyristor without electric discharge.Be chosen in zero transition procedue and constantly control thuristor throw-in and throw-off, the switching disturbance is little, and dynamic response time is short, and the capacitor decay is low, can effectively reduce the capacitor faults rate.
Described communication module is connected with minimum system by the RS232/RS485 interface, and its communication speed is high, and antijamming capability is strong, and long transmission distance can realize the long-range controller work of checking and control by this communication module.
Include touch-switch keyboard circuit and graphic lcd display controller in described human-computer dialogue module, described touch-switch keyboard circuit is connected with processor by a slice isolation drive chip, to realize keyboard entry function, switching thresholding and target power factor that can the setting power factor by keyboard input; Described graphic lcd display controller is dot matrix graphic lcd display controller, by 8 parallel-by-bit data/address buss and one group of control bus, carries out the instruction and data transmission, for the power factor size by real-time, is presented at liquid crystal display.
Operation principle of the present utility model is, controller is at first by electric current, the voltage signal of mutual inductor sample electric power system, current/voltage is converted to analog quantity during digital quantity sends into processor changing by A/D after the signal conditioning circuit preliminary treatment, minimum system is used fft algorithm to calculate meritorious, idle and aperiodic component, according to the result of calculating, according to the zero transition procedue condition, send electric capacity to compensation arrangement and drop into or excise order, carry out switching and control.Related data is sent to display module by data/address bus simultaneously, by LCD, relevant information is shown, system can also upload to Surveillance center by relevant real time data and historical data by communication module, is convenient to realize the centralized detecting function to equipment.
Claims (9)
1. a Controller for Dynamic VAR Compensation, it is characterized in that: comprise minimum system and the power module, Power network parameter measureing module, switching control module, communication module and the human-computer dialogue module that are connected with minimum system, described minimum system is the 32-bit microprocessor embedded system, comprises the clock circuit, reset circuit, jtag interface, Flash memory and the SDRAM memory that are connected with processor.
2. Controller for Dynamic VAR Compensation according to claim 1, it is characterized in that: described processor is 32 ARM microprocessors.
3. Controller for Dynamic VAR Compensation according to claim 1, is characterized in that: include signal conditioning circuit and connected A/D converter in described Power network parameter measureing module.
4. Controller for Dynamic VAR Compensation according to claim 3, is characterized in that: the A/D converter that described A/D converter is 12 8 passages.
5. Controller for Dynamic VAR Compensation according to claim 1, is characterized in that: include zero transition procedue low-voltage dynamic reactive power compensating circuit in described switching control module, adopt the PWM isolation method to drive.
6. Controller for Dynamic VAR Compensation according to claim 1 is characterized in that: described communication module is connected with minimum system by the RS232/RS485 interface.
7. Controller for Dynamic VAR Compensation according to claim 1, is characterized in that: include touch-switch keyboard circuit and graphic lcd display controller in described human-computer dialogue module.
8. Controller for Dynamic VAR Compensation according to claim 7, it is characterized in that: described touch-switch keyboard circuit is connected with processor by a slice isolation drive chip, realizes keyboard entry function.
9. Controller for Dynamic VAR Compensation according to claim 7, it is characterized in that: described graphic lcd display controller is dot matrix graphic lcd display controller, by 8 parallel-by-bit data/address buss and one group of control bus, carries out the instruction and data transmission.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320405937.8U CN203377603U (en) | 2013-07-09 | 2013-07-09 | Dynamic reactive compensation controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320405937.8U CN203377603U (en) | 2013-07-09 | 2013-07-09 | Dynamic reactive compensation controller |
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| Publication Number | Publication Date |
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| CN203377603U true CN203377603U (en) | 2014-01-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320405937.8U Expired - Fee Related CN203377603U (en) | 2013-07-09 | 2013-07-09 | Dynamic reactive compensation controller |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106451762A (en) * | 2016-08-17 | 2017-02-22 | 武汉国想电力科技股份有限公司 | Zero transition process condition detection and intelligent control method and device |
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2013
- 2013-07-09 CN CN201320405937.8U patent/CN203377603U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106451762A (en) * | 2016-08-17 | 2017-02-22 | 武汉国想电力科技股份有限公司 | Zero transition process condition detection and intelligent control method and device |
| CN106451762B (en) * | 2016-08-17 | 2019-01-04 | 武汉国想电力科技股份有限公司 | A kind of detection of zero transition procedue condition and intelligent control method and device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140101 Termination date: 20180709 |