CN205544285U - Use simplification direct current wave filter of control direct current side harmonic voltage as purpose - Google Patents
Use simplification direct current wave filter of control direct current side harmonic voltage as purpose Download PDFInfo
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- CN205544285U CN205544285U CN201620328747.4U CN201620328747U CN205544285U CN 205544285 U CN205544285 U CN 205544285U CN 201620328747 U CN201620328747 U CN 201620328747U CN 205544285 U CN205544285 U CN 205544285U
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- 239000003990 capacitor Substances 0.000 claims abstract description 23
- 238000007599 discharging Methods 0.000 claims description 13
- 238000006243 chemical reaction Methods 0.000 abstract description 4
- 238000004891 communication Methods 0.000 description 11
- 230000005540 biological transmission Effects 0.000 description 10
- 230000000694 effects Effects 0.000 description 5
- 230000005611 electricity Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008447 perception Effects 0.000 description 2
- 230000001629 suppression Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
Classifications
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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
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Abstract
The utility model relates to an use simplification direct current wave filter of control direct current side harmonic voltage as purpose, it includes high voltage capacitor, first circuit return circuit, arrester and second circuit return circuit. High voltage capacitor one end is connected with the direct current polar line, and high voltage capacitor's the other end is connected with the one end of first circuit return circuit and arrester respectively, and the other end in first circuit return circuit is established ties with second circuit return circuit one end, the other end ground connection in second circuit return circuit, and the other end of arrester is ground connection also. First circuit return circuit includes resistor, reactor and lightning rod, and resistor, reactor and lightning rod are parallelly connected. The second circuit return circuit includes low -voltage capacitor, resistor, reactor and lightning rod, and low -voltage capacitor, resistor, reactor and lightning rod are parallelly connected. The utility model discloses harmonic voltage control in certain extent with the current conversion station line side to relieve the possibility of circuit resonance.
Description
Technical field
This utility model relates to a kind of DC filter, especially with regard to one to control DC side harmonics voltage is
The simplification DC filter of purpose.
Background technology
At present, HVDC transmission system operationally, can produce harmonic wave electricity at the DC side of DC transmission system
Pressure and harmonic current, the communication line making DC line neighbouring is interfered.Harmonic voltage improves line side and sets
Standby voltage levvl, at DC side generation circuit resonance, may threaten the safe operation of straight-flow system.At direct current
The DC side of transmission system installs direct current harmonic filter, thus reduces noise level, and by line harmonic voltage
Control a relatively low level, it is to avoid resonance occurs.
The purpose of design of Traditional DC wave filter is to reduce the sensing noise on adjacent communication circuit, therefore, and tradition
DC filter performance is using equivalent disturbing current as the basis of Performance Assessment.Equivalent disturbing current is i.e. by circuit
The harmonic current of upper all frequencies to the interference effect equivalence of communication line that is neighbouring parallel or that intersect to a certain specific
Under frequency, the effect of equivalent disturbing current is equal with the integrated interference effect of the harmonic wave of other all secondary frequencies.High
Frequently the Communication Jamming that harmonic wave produces, significantly larger than low-frequency harmonics, equivalent disturbing current is played Main Function is
High fdrequency component in the harmonic current that straight-flow system produces.
Long distance communication main line, provincial communication trunk, LAN interoffice junction circuit and certain customers' line are the most at present
Use optical cable, do not disturbed by DC line.DC line may form the communication loop of interference and only be confined to portion
Divide from the aerial cable of telephony side to rural subscribers, and aerial cable is substantially uniform to HYA now according to standard
Series plastic telephone cable, has metal screen layer, and heart yearn uses twisted pair construction, and capacity of resisting disturbance is stronger.
Even if not installing DC filter, need to take the order wire of modification measures because of the interference of DC line generation
The Overall Reconstruction expense on road is relatively low compared with the cost of DC filter.Need the most now again to examine direct current closely
The transmission system impact on communication system, in installing costly, takes up an area bigger DC filter and transformation edge
The balance of a cost performance is done between the communication line that line is disturbed.But straight-flow system produces harmonic wave electricity at DC side
Pressure, if not installing DC filter, can produce higher harmonic voltage level at AC line trackside, thus increasing
Add flat anti-line side and the dielectric level of line facility, improve equipment manufacturing cost.According to the parameter of engineering circuit,
It may happen that circuit resonance, it is greatly increased the level of voltage and current, threatens the safe operation of DC engineering.
Summary of the invention
For the problems referred to above, the purpose of this utility model is to provide a kind of for the purpose of controlling DC side harmonics voltage
Simplification DC filter, it by the harmonic voltage control in current conversion station line side within the specific limits, and releases line
The probability of road resonance.
For achieving the above object, this utility model takes techniques below scheme: a kind of to control DC side harmonics electricity
Simplification DC filter for the purpose of pressure, it is characterised in that it includes high-voltage capacitor, the first circuit loop, keeps away
Thunder device and second circuit loop；Described high-voltage capacitor one end is connected with direct-current polar, described high-voltage capacitor
Other end one end with described first circuit loop and described spark gap respectively is connected, described first circuit loop
The other end is connected with one end, described second circuit loop, the other end ground connection in described second circuit loop, described in keep away
The other end of thunder device also ground connection.
Preferably, described first circuit loop includes resistor, reactor and discharging rod；Described resistor, institute
State reactor and described discharging rod is in parallel.
Preferably, described second circuit loop includes secondary capacitor, resistor, reactor and discharging rod；Institute
State secondary capacitor, described resistor, described reactor and described discharging rod in parallel.
This utility model is owing to taking above technical scheme, and it has the advantage that 1, this utility model uses
Simplify DC filter, eliminate the high fdrequency component filtered in the design of Traditional DC wave filter in current conversion station harmonic wave
High frequency branch road, thus save substantial amounts of capacity.2, this utility model uses the method transforming communication line along the line
Solve communication line interference problem, improvement expenses be far below DC filter high frequency branch road cost, improve through
Ji property.3, this utility model uses 2 times and 12 tuning point, both can reduce the harmonic voltage in line side,
DC side generation circuit resonance can also be suppressed.4, this utility model uses the design of two resistors, can
To allow the resistance value of two series resonance points all control in relatively low level.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present utility model；
Fig. 2 is filter impedance curve synoptic diagram of the present utility model.
Detailed description of the invention
With embodiment, this utility model is described in detail below in conjunction with the accompanying drawings.
As it is shown in figure 1, this utility model provides a kind of simplification direct current for the purpose of controlling DC side harmonics voltage
Wave filter, it includes high-voltage capacitor C1, the first circuit loop, spark gap F1 and second circuit loop.High pressure
Capacitor C1 one end is connected with direct-current polar, the other end of high-voltage capacitor C1 respectively with the first circuit loop and
One end of spark gap F1 connects, and the series resonant circuit of high-voltage capacitor C1 and the first circuit loop composition is low
Frequently present capacitive time, during high frequency, present perception.The other end of the first circuit loop is gone here and there with one end, second circuit loop
Connection, the other end ground connection in second circuit loop, second circuit loop presents when low frequency as antiresonant circuit
Perception, presents capacitive during high frequency.High-voltage capacitor C1, the first circuit loop and second circuit loop are two spies
There is resonance under fixed tuned frequency, present Low ESR, for the voltage dragged down on polar curve on tuned frequency.Keep away
The other end also ground connection of thunder device F1, discharging rod F1 is for protection electric elements when lightning impulse or switching impulse
The transient overvoltage of upper generation.
In above-described embodiment, the first circuit loop includes resistor R1, reactor L1 and discharging rod F2.Resistance
Device R1, reactor L1 and discharging rod F2 are in parallel, and resistor R1 can play too high voltages on suppression reactor L1
Effect.
In the various embodiments described above, second circuit loop includes secondary capacitor C2, resistor R2, reactor L2
With discharging rod F3.Secondary capacitor C2, resistor R2, reactor L2 and discharging rod F3 are in parallel, resistor
R2 can play suppression secondary capacitor C2 and the high-tension effect of resonance of reactor L2 parallel connection generation.
In the various embodiments described above, DC filter is in HVDC transmission system 2 times and 12 low-resistance tuning point such as
Shown in Fig. 2, it is for 2 times HVDC transmission system it may happen that the Frequency point of low-frequency resonant；It it is for 12 times high straightening
The characteristic harmonics of stream transmission system DC side, is also the major harmonic component of line side voltage.
In the various embodiments described above, circuit element parameter and the element stress of said apparatus are selected according to following steps:
1) HVDC transmission system model is set up；
2) design double tunning DC filter parameter, is scheduled on the centre of 100Hz Yu 1200Hz by parallel resonant point
Point；
3) bring double tunning DC filter into HVDC transmission system model and calculate, drawing current conversion station
The value of line harmonic voltage and each harmonic value；
4) according to result of calculation, the parameter of double tunning DC filter is optimized；
5) the double tunning DC filter after optimizing again is brought into and is carried out core in HVDC transmission system model
Calculate；
6) according to the double tunning DC filter parameter after optimizing, the stress of its internal each element is determined.
The various embodiments described above are merely to illustrate this utility model, the structure of each parts, size, arrange position and shape
Shape all can be varied from, on the basis of technical solutions of the utility model, all former according to this utility model
Manage the improvement and equivalents that individual part is carried out, the most should not get rid of outside protection domain of the present utility model.
Claims (3)
1. the simplification DC filter for the purpose of controlling DC side harmonics voltage, it is characterised in that: its bag
Include high-voltage capacitor, the first circuit loop, spark gap and second circuit loop；Described high-voltage capacitor one end with
Direct-current polar connect, the other end of described high-voltage capacitor respectively with described first circuit loop and described spark gap
One end connect, the other end of described first circuit loop connects with one end, described second circuit loop, described the
The other end ground connection of two circuit loops, the other end of described spark gap also ground connection.
A kind of simplification DC filter for the purpose of controlling DC side harmonics voltage,
It is characterized in that: described first circuit loop includes resistor, reactor and discharging rod；Described resistor, institute
State reactor and described discharging rod is in parallel.
A kind of simplification DC filter for the purpose of controlling DC side harmonics voltage,
It is characterized in that: described second circuit loop includes secondary capacitor, resistor, reactor and discharging rod；Institute
State secondary capacitor, described resistor, described reactor and described discharging rod in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620328747.4U CN205544285U (en) | 2016-04-18 | 2016-04-18 | Use simplification direct current wave filter of control direct current side harmonic voltage as purpose |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620328747.4U CN205544285U (en) | 2016-04-18 | 2016-04-18 | Use simplification direct current wave filter of control direct current side harmonic voltage as purpose |
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| Publication Number | Publication Date |
|---|---|
| CN205544285U true CN205544285U (en) | 2016-08-31 |
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| CN201620328747.4U Active CN205544285U (en) | 2016-04-18 | 2016-04-18 | Use simplification direct current wave filter of control direct current side harmonic voltage as purpose |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107809109A (en) * | 2017-10-16 | 2018-03-16 | 贵州南度度城市供用电运营有限责任公司 | A kind of line facility arrester |
| CN109494705A (en) * | 2018-12-29 | 2019-03-19 | 国家电网有限公司 | For inhibiting the method for selecting and system of the DC filter of DC side harmonics voltage |
-
2016
- 2016-04-18 CN CN201620328747.4U patent/CN205544285U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107809109A (en) * | 2017-10-16 | 2018-03-16 | 贵州南度度城市供用电运营有限责任公司 | A kind of line facility arrester |
| CN109494705A (en) * | 2018-12-29 | 2019-03-19 | 国家电网有限公司 | For inhibiting the method for selecting and system of the DC filter of DC side harmonics voltage |
| CN109494705B (en) * | 2018-12-29 | 2021-12-28 | 国家电网有限公司 | Selection method and system of direct current filter for suppressing direct current side harmonic voltage |
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