CN103595049B - Single-tuning power grid low-frequency inter-harmonic passive power filter - Google Patents
Single-tuning power grid low-frequency inter-harmonic passive power filter Download PDFInfo
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- CN103595049B CN103595049B CN201310586567.7A CN201310586567A CN103595049B CN 103595049 B CN103595049 B CN 103595049B CN 201310586567 A CN201310586567 A CN 201310586567A CN 103595049 B CN103595049 B CN 103595049B
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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
- Y02E40/40—Arrangements for reducing harmonics
Abstract
The invention relates to a power grid inter-harmonic passive power filter, in particular to a single-tuning power grid low-frequency inter-harmonic passive power filter. The single-tuning power grid low-frequency inter-harmonic passive power filter is composed of a low-frequency power inductor and a low-frequency power capacitor. The power inductor and the power capacitor are connected to a circuit in series. The power filter is installed in a dual-electric-cabinet mode. The dual electric cabinets are a power inductor cabinet and a power capacitor cabinet. The power capacitor cabinet is provided with a lead-in cable connected with a medium-voltage power grid. The power capacitor cabinet is provided with a lead-out cable connected with a neutral line. The single-tuning power grid low-frequency inter-harmonic passive power filter is mainly used for eliminating and reducing the voltage flickering phenomenon and the voltage fluctuation fault phenomenon caused by existing power grid low-frequency inter-harmonics, the damage, caused by power grid voltage low-frequency flicker, to in-network electrical devices and vision of electricity workers is avoided, and the quite effective role in solving the electric energy quality problem caused by the power grid low-frequency inter-harmonics is played.
Description
Technical field
The present invention relates to threephase network m-Acetyl chlorophosphonazo passive power filter, between particularly a kind of single tuning power network low frequency
Subharmonic passive electric-power filter.
Background technology
Existing passive power filter, harmonic wave that can only be to a certain frequency for power frequency integral multiple strobes, between pair
Harmonic wave i.e. frequency are not that the harmonic wave of power frequency integral multiple, particularly low-frequency inter-harmonic do not have filter action.But with electric power
Electronic equipment, the such as various friendships of various current transformers, particularly four quadrant running-straight-intermodulation speed system is widely used in power network,
Especially various high-power speed-adjusting systematic differences, the substantial amounts of m-Acetyl chlorophosphonazos injection electrical network of these equipment generations, cause the electricity of electrical network
Pressure fluctuation and flickering, severely impact power equipment safe operation and people it is healthy.But current passive electric filter
Ripple device and Active Power Filter-APF can not all filter low-frequency inter-harmonic component.It is humorous between single tuning power network low frequency involved by this patent
Ripple electrical passive filter can be effectively filtered out to characteristic low-frequency m-Acetyl chlorophosphonazo, so as to ensure to eliminate and reduce existing electrical network low
The voltage flicker that frequency m-Acetyl chlorophosphonazo causes and voltage pulsation failure, it is to avoid the flickering of line voltage low frequency is to the damage in net electrical equipment
With the harm caused to electricity consumption personnel's eyesight, the quality of power supply caused to improving electrical network low-frequency inter-harmonic has particularly significant meaning.
The content of the invention
It is an object of the invention to provide a kind of single tuning power network low-frequency inter-harmonic passive power filter, mainly solves
The power quality problem of the voltage fluctuation and flicker that the low-frequency inter-harmonic of existing power network causes.It is by power inductance and electric power
The single tuning of electric capacity, to a certain characteristic low-frequency m-Acetyl chlorophosphonazo of electrical network relatively low impedance is produced, and has larger impedance to power current,
So as to the low-frequency inter-harmonic for producing nonlinear-load is directly filtered, it is prevented to flow into electrical network, it is to avoid from causing voltage ripple of power network
And flickering.The electrical network quality of power supply is improved, electrical network electric energy loss is reduced.
To solve above-mentioned technical problem, the technical scheme is that：
A kind of single tuning power network low-frequency inter-harmonic passive power filter, it is characterised in that：It has three high pressure etc.
Effect low frequency power capacitor, the equivalent low frequency power capacitor electricity container cabinet of the high pressure is installed, and capacitor panel has connection electrical network
Three-phase lead-in cable, respectively with electrical network three phase mains A, B, C connection, three-phase connecting line respectively with the equivalent low frequency power inductance of high pressure
Device connects；The equivalent low frequency power inductor of three high pressure, the equivalent low frequency power inductor of the high pressure is installed by Electric Appliance Cabinet, electric power electricity
Sensor cabinet has the outgoing cable of the connection neutral conductor.
Described single tuning power network low-frequency inter-harmonic passive power filter, it is characterised in that：Described high pressure is equivalent
Low frequency power inductor is combined by multiple inductors using connection in series-parallel, and constitutes low frequency list with high pressure low frequency equivalent condenser
Tuning series resonance branch road.
Described single tuning power network low-frequency inter-harmonic passive power filter, it is characterised in that：Described high pressure is equivalent
Low frequency power capacitor is combined by multiple capacitors using connection in series-parallel, and constitutes low frequency list with the equivalent low-frequency electrical sensor of high pressure
Tuning series resonance branch road.
In order to realize filtering the function of low-frequency inter-harmonic in the passive state, according to the frequency of power network characteristic low-frequency m-Acetyl chlorophosphonazo
The measured value of rate f, according toThe numerical value and the numerical value of electric capacity C of the inductance L required for calculating, realizes between low frequency
Harmonic impedance is nought state.Then by the numerical value and the numerical Design actual inductance device and electric capacity of electric capacity C of calculated inductance L
Device, and inductor cabinet and capacitor panel are constituted, inductor cabinet and capacitor panel series connection are followed by required electrical network, realize
The filter function of low-frequency inter-harmonic.
For the different existing running statuses of three-phase power grid voltage and nonlinear-load, its low-frequency inter-harmonic current value can
Can be different, low-frequency inter-harmonic frequency is more than one.Multiple m-Acetyl chlorophosphonazo frequencies in for every phase, need multiple different inductions L
Numerical value and the single tuned filter of numerical value of electric capacity C be connected in parallel on same phase.For larger low-frequency inter-harmonic electric current, its electric capacity
Value will adopt the connection in series-parallel connection composition of multiple electric capacity.For larger low-frequency inter-harmonic electric current, its inductance value will adopt multiple
The connection in series-parallel connection composition of inductance so as to which reaching can to greatest extent filter low-frequency inter-harmonic current values.
Description of the drawings
Fig. 1 is the structural representation of the present invention；
Fig. 2 is high pressure low frequency capacitor schematic diagram；
Fig. 3 is high pressure low-frequency electrical sensor schematic diagram；
Fig. 4 is single tuned filter schematic diagram when every phase has 3 low-frequency inter-harmonics.
Specific embodiment
Fig. 1, it is single tuning power network low-frequency inter-harmonic passive power filter principle schematic of the present invention.It has three
The equivalent low frequency power capacitor 1 of individual high pressure, the electricity container cabinet 6 of equivalent low frequency power capacitor 1 is installed, and capacitor panel has connection
The three-phase lead-in cable 2 of electrical network, respectively with electrical network three phase mains A, B, C connection, three-phase connecting line 3 respectively with the equivalent low frequency of high pressure
Power inductor 4 connects；The equivalent low frequency power inductor 4 of three high pressure, the power inductor 4 is installed by Electric Appliance Cabinet 7, electric power electricity
Sensor cabinet has the outgoing cable 5 of the connection neutral conductor.
Fig. 2, the equivalent capacitance value of the equivalent low frequency power capacitor of three high pressure is according to electrical network low-frequency inter-harmonic electric current
Test result obtained by frequency and current effective value determine.During due to known to frequency f, according toCalculate etc.
Effect capacitance, due to m-Acetyl chlorophosphonazo current effective value I, selects capacitor, when the pressure and current value of capacitor can not meet equivalent
During the requirement of electric capacity, connection in series-parallel connection is carried out.
Fig. 3, the equivalent inductance value of the equivalent low frequency power inductor of three high pressure is according to electrical network low-frequency inter-harmonic electric current
Test result obtained by frequency and current effective value determine.During due to known to frequency f, according toCalculate etc.
Effect inductance value, due to m-Acetyl chlorophosphonazo current effective value I, selects inductor, when the pressure and current value of inductor can not meet equivalent
During the requirement of inductance, connection in series-parallel connection is carried out.
Fig. 4, if the test result of electrical network is every mutually multiple low-frequency inter-harmonic electric currents, then every to be mutually accomplished by multiple dullnesses
Humorous power network low-frequency inter-harmonic filter branch, representing every in Fig. 4 mutually has 3 low-frequency inter-harmonics f1, f2, f3When need the list that filters
Tuning m-Acetyl chlorophosphonazo filter circuit figure.
Claims (1)
1. a kind of single tuning power network low-frequency inter-harmonic passive power filter, it is characterised in that：It has three high pressure equivalent
Low frequency power capacitor（1）, the equivalent low frequency power capacitor of the high pressure（1）Electricity container cabinet (6) is installed, and capacitor panel has connection
The three-phase lead-in cable of electrical network（2）, respectively with electrical network three phase mains A, B, C connection, by three-phase connecting line（3）High pressure is equivalent
Low frequency power capacitor（1）With the equivalent low frequency power inductor of high pressure（4）Connection；The equivalent low frequency power inductor of three high pressure
（4）, the equivalent low frequency power inductor of the high pressure（4）Installed by Electric Appliance Cabinet (7), power inductor cabinet has the extraction of the connection neutral conductor
Cable（5）；
The equivalent low frequency power inductor of described high pressure（4）Combined using connection in series-parallel by multiple inductors, described high pressure
Equivalent low frequency power capacitor（1）Combined using connection in series-parallel by multiple capacitors, and the equivalent low frequency power inductance of high pressure
Device（4）With the equivalent low frequency power capacitor of high pressure（1）Composition low frequency single tuning series resonance branch road.
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| CN201310586567.7A CN103595049B (en) | 2013-11-20 | 2013-11-20 | Single-tuning power grid low-frequency inter-harmonic passive power filter |
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| CN201310586567.7A CN103595049B (en) | 2013-11-20 | 2013-11-20 | Single-tuning power grid low-frequency inter-harmonic passive power filter |
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| CN103595049B true CN103595049B (en) | 2017-04-12 |
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| CN112234622A (en) * | 2020-05-06 | 2021-01-15 | 青岛鼎信通讯股份有限公司 | Method for inhibiting high-frequency harmonic interference |
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| CN201374561Y (en) * | 2009-03-06 | 2009-12-30 | 孙勇 | High-voltage dynamic type composite source power filter |
| CN101577427B (en) * | 2009-05-31 | 2010-12-29 | 国网电力科学研究院武汉南瑞有限责任公司 | Detection control method of self-adapting tuning passive power filter |
| KR101424317B1 (en) * | 2010-11-30 | 2014-08-01 | 엘에스산전 주식회사 | Grid-connected inverter system |
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