CN102931668A - Reactive compensation device - Google Patents
Reactive compensation device Download PDFInfo
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- CN102931668A CN102931668A CN2012104482216A CN201210448221A CN102931668A CN 102931668 A CN102931668 A CN 102931668A CN 2012104482216 A CN2012104482216 A CN 2012104482216A CN 201210448221 A CN201210448221 A CN 201210448221A CN 102931668 A CN102931668 A CN 102931668A
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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 invention discloses a reactive compensation device. The reactive compensation device comprises a signal sampling device, an analog-to-digital converter, a complex programmable logic device, a memory, a power driver board and a power unit. The signal sampling device is connected with a power grid, the analog-to-digital converter is connected with the signal sampling device, the complex programmable logic device is connected with the analog-to-digital converter, the memory is connected with the complex programmable logic device, the power driver board is connected with the complex programmable logic device, and the power unit is connected with the power driver board. The reactive compensation device is in parallel connection with the power grid, can automatically compensate reactive power required by a power grid system and is low in power consumption, high in compensating efficiency, high in memory capacity and low in cost.
Description
Technical field
The present invention relates to the electric network reactive compensation field, relate in particular to a kind of reactive power compensator.
Background technology
Alternating current in the electrical network is in by pure resistance, and electric energy has all converted heat energy to, and in by pure capacitive or pure inductive load, does not do work, and does not also namely have power consumption, i.e. reactive power.Certainly actual loading can not be pure capacitive load or pure inductive load, generally all is the Combination load, and electric current just has the part electric energy not do work by load the time like this, and the power factor of this moment is less than 1.In order to reduce the loss of transformer and conveying circuit, improve the power factor of electrical network, improve the power supply environment, generally meeting reactive power compensator in parallel in electrical network compensates fundamental wave reactive power and the harmonic wave of user's bus.But traditional reactive power compensator is take programmable logic array and GAL as kernel control chip, and not only cost is high, power consumption is large, inefficiency, and poor expandability, memory capacity is little, can't satisfy the needs of flexible flexible AC transmitting system (FACTS) development.
Summary of the invention
For above-mentioned technical problem, the object of the present invention is to provide a kind of reactive power compensator, it is parallel in the electrical network, the required reactive power of energy auto-compensation network system, not only low in energy consumption, compensation efficiency is high, and memory capacity is large, and cost is low.
For reaching this purpose, the present invention by the following technical solutions:
A kind of reactive power compensator, it comprises: signal sampling device, analog to digital converter, CPLD, memory, power driving device and power cell;
Described signal sampling device is connected with electrical network, is used for gathering by Hall current sensor and Hall voltage transducer current signal and the voltage signal of electrical network, exports to analog to digital converter;
Described analog to digital converter is connected with signal sampling device, and the described current signal and the voltage signal that are used for receiving are converted to digital information, export to CPLD;
Described CPLD is connected with analog to digital converter, is used for analyzing described digital information and carries out, and obtains reactive power information, and according to this reactive power information to the power driving device output drive signal;
Described memory is connected with CPLD, is used for all data to the input of storage CPLD;
Described power driving device is connected with CPLD, is used for the described driving signal of receiving is encoded, and generates start pulse signal, and exports to power cell, and switching device opening and turn-offing in the power ratio control unit;
Described power cell is connected with power driving device, is used for generating required offset current by the opening and turn-offing of described power device, and exports to electrical network.
Especially, switching device is insulated gate bipolar transistor in the described power cell.
Especially, described reactive power compensator also comprises serial communication device, with CPLD, is used for finishing the transfer of data between reactive power compensator and the control and monitor console.
The present invention is parallel in the electrical network, and offset current can be followed rapidly the variation of reactive load electric current and be changed, and the required reactive power of auto-compensation network system is not only low in energy consumption, and compensation efficiency is high, and memory capacity is large, and cost is low.
Description of drawings
The reactive power compensator structure chart that Fig. 1 provides for the embodiment of the invention.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, the invention will be further described below in conjunction with drawings and Examples.
Please refer to shown in Figure 1, the reactive power compensator structure chart that Fig. 1 provides for the embodiment of the invention.
Reactive power compensator comprises in the present embodiment: signal sampling device 1, analog to digital converter 2, CPLD (CPLD) 3, memory 4, power driving device 5, power cell 6 and serial communication device 7.
Described signal sampling device 1 is connected with electrical network, is used for gathering by Hall current sensor and Hall voltage transducer current signal and the voltage signal of electrical network, exports to analog to digital converter 2.In order to finish reactive power compensation to electrical network accurately, signal sampling device 1 will detect line voltage, power network current in real time by Hall current sensor and Hall voltage transducer.
Described analog to digital converter 2 is connected with signal sampling device 1, and the described current signal and the voltage signal that are used for receiving are converted to digital information, export to CPLD.After the described current signal that analog to digital converter 2 will be received and voltage signal are converted to digital information, just can carry out digital processing to it by CPLD.
Described CPLD is connected with analog to digital converter 2, is used for analyzing described digital information and carries out, and obtains reactive power information, and according to this reactive power information to power driving device 5 output drive signals.CPLD will calculate rapidly reactive power according to the power network current in the digital information and line voltage, and calculate according to this phase shifting angle of power cell 6 output voltages, and certain constantly to power driving device 5 output drive signals.CPLD is selected the EPM1270T144C5 of the MAXII series of altera corp's production in the present embodiment, it supports that the user upgrades flash configuration when device is worked, support multiple both-end I/O(I/O) interface standard, and also cost is low, and low in energy consumption.
Described memory 4 is connected with CPLD, is used for all data to the input of storage CPLD.To select capacity be the flash memory (Flash) of 8Kbits to memory 4 in the present embodiment, has the related data result of enough capacity storage CPLD computings.
Described power driving device 5 is connected with CPLD, is used for the described driving signal of receiving is encoded, and generates start pulse signal, and exports to power cell 6, and switching device opening and turn-offing in the power ratio control unit 6.
Described power cell 6 is connected with power driving device 5, is used for generating required offset current by the opening and turn-offing of described power device, and exports to electrical network.Power device is selected insulated gate bipolar transistor in the present embodiment, and its switching speed is fast, is easy to control.The inverter of power cell 6 for being consisted of by insulated gate bipolar transistor.
Described serial communication device 7 is connected with CPLD, is used for finishing the transfer of data between reactive power compensator and the control and monitor console.This serial communication device 7 finish by the RS232 interface and control and monitor console between transfer of data, the partial parameters input monitoring platform of reactive power compensator is shown, simultaneously also can be by the control information input reactive power compensator of serial communication device 7 with control and monitor console.
The present invention is parallel in the electrical network, and offset current can be followed rapidly the variation of reactive load electric current and be changed, and the required reactive power of auto-compensation network system is not only low in energy consumption, and compensation efficiency is high, and memory capacity is large, and cost is low.
Above-mentioned only is preferred embodiment of the present invention and institute's application technology principle, anyly is familiar with those skilled in the art in the technical scope that the present invention discloses, and the variation that can expect easily or replacement all should be encompassed in protection scope of the present invention.
Claims (3)
1. a reactive power compensator is characterized in that, comprising: signal sampling device, analog to digital converter, CPLD, memory, power driving device and power cell;
Described signal sampling device is connected with electrical network, is used for gathering by Hall current sensor and Hall voltage transducer current signal and the voltage signal of electrical network, exports to analog to digital converter;
Described analog to digital converter is connected with signal sampling device, and the described current signal and the voltage signal that are used for receiving are converted to digital information, export to CPLD;
Described CPLD is connected with analog to digital converter, is used for analyzing described digital information and carries out, and obtains reactive power information, and according to this reactive power information to the power driving device output drive signal;
Described memory is connected with CPLD, is used for all data to the input of storage CPLD;
Described power driving device is connected with CPLD, is used for the described driving signal of receiving is encoded, and generates start pulse signal, and exports to power cell, and switching device opening and turn-offing in the power ratio control unit;
Described power cell is connected with power driving device, is used for generating required offset current by the opening and turn-offing of described power device, and exports to electrical network.
2. reactive power compensator according to claim 1 is characterized in that, switching device is insulated gate bipolar transistor in the described power cell.
3. reactive power compensator according to claim 2 is characterized in that, also comprises serial communication device, with CPLD, is used for finishing the transfer of data between reactive power compensator and the control and monitor console.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2012104482216A CN102931668A (en) | 2012-11-09 | 2012-11-09 | Reactive compensation device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012104482216A CN102931668A (en) | 2012-11-09 | 2012-11-09 | Reactive compensation device |
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| CN102931668A true CN102931668A (en) | 2013-02-13 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1264948A (en) * | 2000-01-25 | 2000-08-30 | 清华大学 | Universal controller for flexible AC transmission equipment |
| CN200947546Y (en) * | 2006-06-06 | 2007-09-12 | 粟时平 | Low-voltage three-phase static reactive synchronous compensator |
| CN101986545A (en) * | 2010-05-13 | 2011-03-16 | 江苏大学 | Inverter driving device based on digital signal processor (DSP) and complex programmable logic device (CPLD) |
| CN102004455A (en) * | 2010-09-25 | 2011-04-06 | 天津理工大学 | STATCOM (Static Synchronous Compensator) control system based on mixed chaotic sequence generator |
| CN202917982U (en) * | 2012-11-09 | 2013-05-01 | 无锡市锡容电力电器有限公司 | Reactive power compensator |
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2012
- 2012-11-09 CN CN2012104482216A patent/CN102931668A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1264948A (en) * | 2000-01-25 | 2000-08-30 | 清华大学 | Universal controller for flexible AC transmission equipment |
| CN200947546Y (en) * | 2006-06-06 | 2007-09-12 | 粟时平 | Low-voltage three-phase static reactive synchronous compensator |
| CN101986545A (en) * | 2010-05-13 | 2011-03-16 | 江苏大学 | Inverter driving device based on digital signal processor (DSP) and complex programmable logic device (CPLD) |
| CN102004455A (en) * | 2010-09-25 | 2011-04-06 | 天津理工大学 | STATCOM (Static Synchronous Compensator) control system based on mixed chaotic sequence generator |
| CN202917982U (en) * | 2012-11-09 | 2013-05-01 | 无锡市锡容电力电器有限公司 | Reactive power compensator |
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Application publication date: 20130213 |