CN101075737A - Continuouslly-adjusting arc-eliminating coil for compensatting current between large range - Google Patents
Continuouslly-adjusting arc-eliminating coil for compensatting current between large range Download PDFInfo
- Publication number
- CN101075737A CN101075737A CN 200710041962 CN200710041962A CN101075737A CN 101075737 A CN101075737 A CN 101075737A CN 200710041962 CN200710041962 CN 200710041962 CN 200710041962 A CN200710041962 A CN 200710041962A CN 101075737 A CN101075737 A CN 101075737A
- Authority
- CN
- China
- Prior art keywords
- reactor
- suppression coil
- arc suppression
- parallel
- groups
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Supply And Distribution Of Alternating Current (AREA)
- Control Of Electrical Variables (AREA)
Abstract
An arc extinction wire of large scale continuous adjustable compensatory current includes reactor, vacuum contacting switch, reactor of secondary winding, adjustable silicon of double phases linked in parallel and controller. Each of the reactor side circuit is linked in series with a vacuum contacting switch and then linked in parallel with a reactor of secondary winding which is in a circuit with the adjustable silicon of double phases at the secondary side. One end of the controller is linked to the vacuum contacting switch, and the other end linked to the adjustable silicon of double phases to change reactance value on the premier side by controlling the conducting angle.
Description
Technical field
What the present invention relates to is the equipment in a kind of power distribution network technology field, and concrete is a kind of large-scale continuously adjustable arc suppression coil of offset current of realizing.
Background technology
In the distribution network system of 6-35KV, use with its unique advantage having obtained widely gradually through the grounding through arc mode.Arc suppression coil can be divided into three kinds according to the difference of structure at present: turn-adjusting, capacitor tuning type, phase control type.The turn-adjusting arc suppression coil is a gear change inductance of regulating arc suppression coil by loaded switch, have simple in structure, cheap advantage, but also exist the offset current compensation range little, can not regulate continuously and the loaded switch reaction speed is slow, the noise of transferring the files is big shortcoming.Adjustable capacitive-based arc-suppression coil is the equivalent inductance that changes arc suppression coil by the capacitance group that changes the arc suppression coil secondary side, its design and manufacturing process more complicated, and production cost is higher, can not be widely used.The phase control type arc suppression coil is by changing the equivalent inductance that the arc suppression coil secondary side silicon controlled angle of flow changes arc suppression coil, have offset current and can regulate, regulate the advantage that the degree of depth is big, controls reaction speed is fast continuously, but owing to used the controllable silicon non-linear element, in system, produce harmonic wave, need the installing filter, therefore design is complicated, and cost is higher.The turn-adjusting arc suppression coil is simple in structure with it, be easy to make, cheap advantage and obtained practical widely, but also exist the gear of arc suppression coil thin inadequately, offset current can not continuously adjustable shortcoming.
Find by prior art documents, " electric power system resonance grounding " (Beijing: introduce China Electric Power Publishing House): the turn-adjusting arc suppression coil is improved, its principle still is the way that thickness is transferred basically, be that coarse adjustment is controlled by loaded switch, fine tuning is by 4 groups of controllable silicon combination controls, and this method cost is higher, and structure is too complicated, gear can be assigned to 200 grades, but a lot of overlapping gears is arranged, and does not have practical significance.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, a kind of large-scale continuously adjustable arc suppression coil of offset current of realizing is provided.Make it pass through the improvement of discrete reactor prior art is designed, realized the step-less adjustment of arc suppression coil compensation electric current, and do not needed to install filter.
The present invention is achieved through the following technical solutions, the present invention includes: four groups or five groups of reactors, four groups or five groups of vacuum contact-making switches, the reactor of band secondary winding, two-phase controllable silicon in parallel, new arc suppression coil control system,, in parallel with the reactor of band secondary winding respectively on each reactor branch road with after a vacuum contact-making switch is connected; The secondary side of the reactor of band secondary winding inserts two-way controllable silicon in parallel and controllable silicon in parallel with two-phase is connected to form the loop; New arc suppression coil control system one end is connected with the vacuum contact-making switch, and its other end is connected with two-phase controllable silicon in parallel, controls the equivalent reactance value that the two-way silicon controlled angle of flow in parallel changes the primary side of band secondary winding reactor by new arc suppression coil control system.
Four groups or five groups of independent reactors that reactor is the capacity multiplication of the present invention, each reactor parallel connection, the independently reactor that each inductance value has nothing in common with each other, control its combination by the vacuum contact-making switch, change the arc suppression coil inductance, thereby realize the coarse adjustment of combination reactance arc suppression coil compensation electric current; The reactor of band secondary winding, its secondary side inserts two-way silicon controlled module in parallel, new arc suppression coil control system changes the equivalent reactance of this reactor by the switching of control vacuum contact-making switch control place branch road reactor by the angle of flow of new arc suppression coil control system control silicon controlled module.
Two-phase of the present invention controllable silicon in parallel is the non-linear element controllable silicon, can make the arc suppression coil compensation electric current contain harmonic wave, design of the present invention makes the harmonic content of arc suppression coil compensation electric current very low, its total percent harmonic distortion (less than 5%) in the national standard claimed range, harmonic content can be ignored, and does not therefore need to install filter.
The present invention utilizes the combination of discrete reactor to reach the purpose of adjustable arc suppression coil, can realize that by above design the present invention offset current is adjustable continuously on a large scale, the reactance of reactor is bigger, offset current in system is less, realizes the fine setting of arc suppression coil compensation electric current by the change of this reactor inductance.
The present invention not only eliminated the turn-adjusting arc suppression coil use loaded switch change the arc suppression coil inductance with shortcoming, and in the step-less adjustment that has realized the arc suppression coil compensation electric current, do not need to install filter, its structural design is simple, the cost cost is lower, reliability is higher, is a kind of comparatively desirable arc suppression coil.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is an equivalent circuit diagram of the present invention;
Fig. 3 is the offset current oscillogram of band controllable silicon reactor of the present invention.
Embodiment
Below in conjunction with accompanying drawing embodiments of the invention are elaborated: present embodiment is being to implement under the prerequisite with the technical solution of the present invention, provided detailed execution mode and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
As shown in Figure 1: the L1 of present embodiment, L2, L3, L4 are independent reactor, and L ' is the reactor of band secondary side; K1, K2, K3, K4 are the vacuum contact-making switch, are connected on respectively on the branch road of L1, L2, L3, L4 independence reactor, are used for controlling the combination of reactor; Kg is two-way controllable silicon in parallel, is connected on the secondary side of reactor L '; New arc suppression coil control system can be controlled the combination of vacuum contact-making switch and the silicon controlled angle of flow, finishes the step-less adjustment of arc suppression coil inductance.The offset current of independent reactor L1, L2, L3, L4 is respectively i
1, i
2, i
3, i
4, the pass of its value is i
1: i
2: i
3: i
4=8: 4: 2: 1.When the complete conducting of controllable silicon, maximum offset current i ' and the i of reactor L '
4Equate, can realize that like this offset current of arc suppression coil is adjustable continuously.
After arc suppression coil put into operation, system's equivalent circuit diagram as shown in Figure 2: Un was the neutral point voltage of arc suppression coil port, L '
σBe the equivalent leakage reactance of reactor L ', i is the total offset current of arc suppression coil, and i ' is the offset current of reactor L '.
When the silicon controlled angle of flow is δ, the oscillogram of the offset current i ' of neutral point voltage and reactor L ', as shown in Figure 3, and the i ' waveform non-sinusoidal waveform of electric current, this electric current contains certain harmonic wave.
Any periodic waveform can expand into fourier series:
Wherein: f (t) is that a frequency is f
0Periodic function, its angular frequency
0=2 π f
0A
0Be DC component;
C
1Sin (ω
0T+
1) be fundametal compoment; C
nSin (n ω
0T+
n) be nth harmonic, amplitude is C
n, frequency is nf
0, phase place is
nTotal percent harmonic distortion is THD, promptly
Silicon controlled angle of flow δ exists by analysis
Between when changing, the maximum percent harmonic distortion of current i ' middle harmonic content is 17%.When total offset current of arc suppression coil greater than 3i ' time, the total percent harmonic distortion of arc suppression coil is less than 5%.GB regulation: for 66KV and following electric power system thereof, IEEE519 standard " measure and the requirement of harmonic wave control in the electric power system that IEEE recommends ", the amplitude limitation of the harmonic wave of single frequency to 3% of fundamental voltage amplitude, is restricted to 5% with total percent harmonic distortion.
Therefore, when the offset current i ' time of the total offset current of arc suppression coil greater than 3 times of thyristor controlled reactance L ', its harmonic content can be ignored, and does not need to install filter.For example: the offset current of reactance L1, L2, L3, L4 is respectively 24A, 12A, 6A, 3A, can obtain 3A to the offset current between the 45A by cooperatively interacting of several vacuum switches, be spaced apart 3A so the leakage reactance L ' of regulative reactance L ' between its offset current
σMaximum offset current be set to 3A, the step-less adjustment of the offset current that can realize making up arc suppression coil from 0 to 48A.When the offset current of arc suppression coil during greater than 9A (3 times 3A), the percent harmonic distortion of arc suppression coil compensation electric current is less than 5%, and harmonic content can be ignored, and does not need to install filter.
Claims (4)
1. can realize the large-scale continuously adjustable arc suppression coil of offset current for one kind, comprise: reactor, the vacuum contact-making switch, the reactor of band secondary winding, two-phase controllable silicon in parallel, new arc suppression coil control system, it is characterized in that, described reactor is four groups or five groups of reactors, described empty contact-making switch is four groups or five groups of vacuum contact-making switches, on each reactor branch road with after a vacuum contact-making switch is connected, in parallel with the reactor of band secondary winding respectively, the secondary side of the reactor of band secondary winding inserts two-way controllable silicon in parallel and controllable silicon in parallel with two-phase is connected to form the loop, new arc suppression coil control system one end is connected with the vacuum contact-making switch, its other end is connected with two-phase controllable silicon in parallel, controls the equivalent reactance value that the two-way silicon controlled angle of flow in parallel changes the primary side of band secondary winding reactor by new arc suppression coil control system.
2. the large-scale continuously adjustable arc suppression coil of offset current of realizing as claimed in claim 1 is characterized in that, the independent reactor of the capacity multiplication that described four groups or five groups of reactors are each reactor parallel connections.
3. the large-scale continuously adjustable arc suppression coil of offset current of realizing as claimed in claim 1, it is characterized in that, the reactor of described band secondary winding, its secondary side inserts two-way silicon controlled module in parallel, and new arc suppression coil control system is by the switching of control vacuum contact-making switch control place branch road reactor.
4. the large-scale continuously adjustable arc suppression coil of offset current of realizing as claimed in claim 1 is characterized in that, described two-phase controllable silicon in parallel is the non-linear element controllable silicon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100419621A CN100525002C (en) | 2007-06-14 | 2007-06-14 | Continuouslly-adjusting arc-eliminating coil for compensatting current between large range |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100419621A CN100525002C (en) | 2007-06-14 | 2007-06-14 | Continuouslly-adjusting arc-eliminating coil for compensatting current between large range |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101075737A true CN101075737A (en) | 2007-11-21 |
| CN100525002C CN100525002C (en) | 2009-08-05 |
Family
ID=38976597
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007100419621A Active CN100525002C (en) | 2007-06-14 | 2007-06-14 | Continuouslly-adjusting arc-eliminating coil for compensatting current between large range |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100525002C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111864715A (en) * | 2020-07-21 | 2020-10-30 | 梁志瑞 | Normalization module combined arc suppression coil |
| CN114123778A (en) * | 2021-08-23 | 2022-03-01 | 珠海极海半导体有限公司 | Self-adaptive compensation circuit, protection circuit and integrated circuit |
| CN117277248A (en) * | 2023-11-17 | 2023-12-22 | 昆明理工大学 | Active arc extinction voltage-current conversion method, system and medium for power distribution network |
-
2007
- 2007-06-14 CN CNB2007100419621A patent/CN100525002C/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111864715A (en) * | 2020-07-21 | 2020-10-30 | 梁志瑞 | Normalization module combined arc suppression coil |
| CN114123778A (en) * | 2021-08-23 | 2022-03-01 | 珠海极海半导体有限公司 | Self-adaptive compensation circuit, protection circuit and integrated circuit |
| CN114123778B (en) * | 2021-08-23 | 2024-01-19 | 珠海极海半导体有限公司 | Self-adaptive compensation circuit, protection circuit and integrated circuit |
| CN117277248A (en) * | 2023-11-17 | 2023-12-22 | 昆明理工大学 | Active arc extinction voltage-current conversion method, system and medium for power distribution network |
| CN117277248B (en) * | 2023-11-17 | 2024-02-20 | 昆明理工大学 | Active arc extinction voltage-current conversion method, system and medium for power distribution network |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100525002C (en) | 2009-08-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100561824C (en) | Control method and implement device thereof are eliminated in the prediction of SVC specific times harmonic | |
| CN108712081A (en) | The control method of constant voltage gain isolation type bidirectional full-bridge DC/DC converters | |
| CN104917193A (en) | Hybrid dynamic reactive power compensation device with resonance suppression function and method | |
| CN107154650B (en) | Coordination control method for alternating current-direct current section multi-converter in hybrid microgrid | |
| CN100525002C (en) | Continuouslly-adjusting arc-eliminating coil for compensatting current between large range | |
| CN103972922A (en) | Photovoltaic grid connection control method on basis of improved quasi-resonance control and repeated control | |
| CN102801381B (en) | Controllable transformer device capable of controlling amplitude and phase angle of voltage individually and control method for same | |
| CN202602533U (en) | Power factor correction circuit, and integrated circuit and switch power supply for the manufacture of the power factor correction circuit | |
| CN201048289Y (en) | Arc suppression coil capable of stepless adjustment | |
| CN201887482U (en) | Dynamic reactive compensation device for transformer substation-type voltage reactive integrated control | |
| CN201374562Y (en) | Dynamic electric power filtering compensation device | |
| CN201717789U (en) | Series-type power quality compensator based on AC/AC chopper | |
| CN102593842B (en) | Distributive flexible reactive compensation configuration method of provincial power grid | |
| CN102510062B (en) | Improved space vector single period control method and device for active power filter | |
| CN101577432A (en) | Reactive power compensation method and control device adopting same | |
| CN112688586A (en) | Control method for improved weighted average current of LCL grid-connected inverter | |
| CN205141653U (en) | Arc extinction device that filtering formula dynamic reactive compensation adjusted | |
| CN104037769A (en) | Parameter design method for single-phase PAPF and output LCL filter | |
| CN2631097Y (en) | Dynamic reactive compensating and filtering device | |
| CN106549393B (en) | Static Var Compensator DC bus capacitor capacitance and average voltage choosing method | |
| CN201758286U (en) | Hybrid power filter reactive compensation device | |
| CN106253277B (en) | Instruction current computing circuit and Active Power Filter-APF based on Nonlinear Tracking Differentiator | |
| CN100355178C (en) | Method and apparatus for combined tandem type active fundamental wave electric power reactive compensation and filtering | |
| CN205004752U (en) | Terminal automatic voltage regulation of distribution lines and reactive power compensator | |
| CN206790109U (en) | A kind of reactive-load compensation power network transformation adjusting means |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |