CN103956759A - Dynamic voltage compensation device - Google Patents
Dynamic voltage compensation device Download PDFInfo
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- CN103956759A CN103956759A CN201410212802.9A CN201410212802A CN103956759A CN 103956759 A CN103956759 A CN 103956759A CN 201410212802 A CN201410212802 A CN 201410212802A CN 103956759 A CN103956759 A CN 103956759A
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Abstract
The invention relates to the field of high-voltage transmission lines, in particular to a dynamic voltage compensation device. The dynamic voltage compensation device comprises a signal acquisition unit, a signal control and processing unit and a signal feedback unit. The signal acquisition unit comprises a sampling transformer connected to front of a power grid compensation point and a sampling ADC module connected with the sampling transformer. The signal control and processing unit comprises an ARM processor, an energy storage device and a series transformer connected to the position of the power grid compensation point, wherein the output end of the ARM processor is connected to the ARM processor through an energy storage conversion control unit, and the energy storage device releases electric energy to the compensation point through a filter and the series transformer. The signal feedback unit comprises a feedback transformer connected behind the power grid compensation point and a feedback ADC module connected with the feedback transformer. The sampling ADC module and the feedback ADC module are connected to the input end of the ARM processor.
Description
Technical field
The present invention relates to ultra-high-tension power transmission line field, specifically a kind of dynamic voltage compensation device.
Background technology
Along with industry and scientific and technological development, in electric power system, accessed increasing large-capacity power equipment, rectification converter and other nonlinear-load, cause voltage current waveform in electric power system to occur seriously distort and produce harmonic pollution.In electrical network, there are various power transformations, transmission of electricity, distribution and power consumption equipment, the existence of harmonic pollution has produced great harm to the operation of these equipment, and the little device damage that causes greatly causes electrical network paralysis, has had a strong impact on stable operation and the quality of power supply of electrical network.Therefore, need to carry out electric energy quality monitoring to the necessary links in electrical network, and the requirement to the quality of power supply according to power equipment, in real time electrical network dynamic electric voltage is compensated, so that power equipment is operated under the operating state of its standard configuration.
At present, the method that dynamic voltage compensation device generally adopts is as follows: according to application scenario, choose suitable electrical energy storage device; Electric energy quality harmonic feature under collection analysis current application environment; Harmonic characteristic is fed back to energy storage converter unit, according to harmonic information, convert and discharge electric energy; The electric energy discharging through filter and transformer feedback in electrical network.Although the method can compensate dynamic electric voltage to a certain extent, due to the curing design of system, the method can not detect analysis and dynamically control energy storage conversion by flexible harmonic wave, makes dynamic voltage compensation effect not good enough.
Summary of the invention
The problem that the present invention exists in order to solve existing dynamic voltage compensation device, provides a kind of dynamic voltage compensation device.
The present invention is achieved through the following technical solutions: dynamic voltage compensation device, comprises signal gathering unit, signal controlling and processing unit and signal feedback unit; Described signal gathering unit comprises the sampling transformer being connected in before power network compensation point, the sampling ADC module being connected with sampling transformer; The series transformer that described signal controlling and processing unit comprise arm processor, energy storing device and be connected in power network compensation point place, the output of described arm processor converts control unit by energy storage and is connected on energy storing device, and energy storing device is released into compensation point by filter and series transformer by electric energy; Described signal feedback unit comprises the feedback transformer being connected in after power network compensation point, the feedback ADC module being connected with feedback transformer; Described sampling ADC module and feedback ADC module are all connected in the input of arm processor.
During concrete use, on the collection point 1 before power network compensation point, sampling transformer is transformed into low-voltage by high voltage, measures the digital value of low-voltage, and be entered into arm processor by sampling ADC module (AD conversion unit); Arm processor analytical sampling value (harmonic wave and change in voltage information), calculates bucking voltage and controls parameter and regulated value, and feeds back to energy storage conversion control unit; Energy storage conversion control unit is controlled energy storing device and is discharged electric energy, and the electric energy of release is device after filtering, has reduced the harmonic pollution to electrical network, finally through series transformer, will discharge electric energy input offset point again, to reach the object of voltage compensation.Subsequently, on the collection point 2 after power network compensation point, by signal feedback unit, gather again, analyze, control and compensate, to reach the object of closed-loop control.
Dynamic voltage compensation device of the present invention, the collection before power network compensation point is that voltage compensation carries out anticipation analysis, realizes good real-time; Collection after compensation point is carried out closed loop feedback to voltage compensation, realizes good stability.By the high-performance analyzing and processing of arm processor, realize sampling analysis flexibly and dynamically control, and making system there is certain autgmentability.
Accompanying drawing explanation
Fig. 1 is the syndeton schematic diagram of dynamic voltage compensation device of the present invention.
Embodiment
Dynamic voltage compensation device, comprises signal gathering unit, signal controlling and processing unit and signal feedback unit; Described signal gathering unit comprises the sampling transformer being connected in before power network compensation point, the sampling ADC module being connected with sampling transformer; The series transformer that described signal controlling and processing unit comprise arm processor, energy storing device and be connected in power network compensation point place, the output of described arm processor converts control unit by energy storage and is connected on energy storing device, and energy storing device is released into compensation point by filter and series transformer by electric energy; Described signal feedback unit comprises the feedback transformer being connected in after power network compensation point, the feedback ADC module being connected with feedback transformer; Described sampling ADC module and feedback ADC module are all connected in the input of arm processor.
Claims (1)
1. dynamic voltage compensation device, is characterized in that, comprises signal gathering unit, signal controlling and processing unit and signal feedback unit; Described signal gathering unit comprises the sampling transformer being connected in before power network compensation point, the sampling ADC module being connected with sampling transformer; The series transformer that described signal controlling and processing unit comprise arm processor, energy storing device and be connected in power network compensation point place, the output of described arm processor converts control unit by energy storage and is connected on energy storing device, and energy storing device is released into compensation point by filter and series transformer by electric energy; Described signal feedback unit comprises the feedback transformer being connected in after power network compensation point, the feedback ADC module being connected with feedback transformer; Described sampling ADC module and feedback ADC module are all connected in the input of arm processor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410212802.9A CN103956759A (en) | 2014-05-20 | 2014-05-20 | Dynamic voltage compensation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410212802.9A CN103956759A (en) | 2014-05-20 | 2014-05-20 | Dynamic voltage compensation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103956759A true CN103956759A (en) | 2014-07-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410212802.9A Pending CN103956759A (en) | 2014-05-20 | 2014-05-20 | Dynamic voltage compensation device |
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| CN (1) | CN103956759A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1786862A (en) * | 2005-12-12 | 2006-06-14 | 天津理工大学 | System for controlling dynamic voltage compensator based on DSP |
| CN1937349A (en) * | 2006-10-25 | 2007-03-28 | 北京四方清能电气电子有限公司 | Comprehensive dynamic compensating device for distribution network |
| CN202353217U (en) * | 2011-11-02 | 2012-07-25 | 北京航空航天大学 | Dynamic voltage quick compensating device |
| CN202856358U (en) * | 2012-08-26 | 2013-04-03 | 厦门埃锐圣电力科技有限公司 | Double closed loop dynamic voltage regulator |
| CN203839970U (en) * | 2014-05-20 | 2014-09-17 | 国家电网公司 | Dynamic voltage compensation device |
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2014
- 2014-05-20 CN CN201410212802.9A patent/CN103956759A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1786862A (en) * | 2005-12-12 | 2006-06-14 | 天津理工大学 | System for controlling dynamic voltage compensator based on DSP |
| CN1937349A (en) * | 2006-10-25 | 2007-03-28 | 北京四方清能电气电子有限公司 | Comprehensive dynamic compensating device for distribution network |
| CN202353217U (en) * | 2011-11-02 | 2012-07-25 | 北京航空航天大学 | Dynamic voltage quick compensating device |
| CN202856358U (en) * | 2012-08-26 | 2013-04-03 | 厦门埃锐圣电力科技有限公司 | Double closed loop dynamic voltage regulator |
| CN203839970U (en) * | 2014-05-20 | 2014-09-17 | 国家电网公司 | Dynamic voltage compensation device |
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Application publication date: 20140730 |