CN2438257Y - Automatic tuning arc suppression oil earthing device - Google Patents
Automatic tuning arc suppression oil earthing device Download PDFInfo
- Publication number
- CN2438257Y CN2438257Y CN 00228292 CN00228292U CN2438257Y CN 2438257 Y CN2438257 Y CN 2438257Y CN 00228292 CN00228292 CN 00228292 CN 00228292 U CN00228292 U CN 00228292U CN 2438257 Y CN2438257 Y CN 2438257Y
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- arc suppression
- suppression coil
- automatic tuning
- earthing device
- coil
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Abstract
The utility model relates to an automatic tuning arc suppression coil earthing device, which comprises an earthing transformer and an arc suppression coil, wherein, the arc suppression coil is a secondary winding which can be with a load; a secondary regulation capacitor bank is composed of one or a plurality of capacitors and branches of a thyristor, wherein, the capacitors are connected in parallel with the branches of the thyristor, each group of the capacitors is controlled by a corresponding thyristor, and each group of the capacitors is joined in the secondary winding of the arc suppression coil; a control unit adopts a single chip computer structure and an electronic circuit of double CPU chips working alliance. The utility model has the advantages that complement and intelligent of electric equipment are integrated into integration, the operational reliability is high, the failure rate is low, and the electricity supply reliability of an electric network can be improved. The utility model is an indispensable electricity setting of an isolated neutral system, particularly of a city electricity grid.
Description
The utility model relates to a kind of automatic tuning arc depression coil earthing device that is applicable to automatic tracking and compensating electric network capacitance and current in the distribution system, restriction arc light grounding surge.
In the prior art, it is several that the earthing device of realization automatic tracking and compensating mainly contains adjusting gapped-core type, D.C. magnetic biasing formula and turn-adjusting etc.Adjusting gapped-core type is owing to be the mechanical adjustment mode, and response speed is slow, vibrating noise is big, reliability is low.The D.C. magnetic biasing formula adopts the degree of saturation of regulating iron core to control inductance, and it is unshakable in one's determination overheated that though response speed is fast, adjustable range is narrow, energy consumption greatly, easily makes, and non-linear will the causing of controllable silicon and magnetic circuit injected harmonic wave to system simultaneously.In addition, secondary device complexity, reliability are also lower.Turn-adjusting utilizes the method for mechanical on-load tap changer to regulate inductance, can not regulate continuously.Therefore when system capacitive current is big, will adjustable range and the contradiction that reduces residual flow appear increasing.
The purpose of this utility model aim to provide a kind of simple in structure, regulate current range big, regulate differential little, response speed is fast, reliability is high automatic tuning arc depression coil earthing device, to overcome the deficiencies in the prior art part.
A kind of automatic tuning arc depression coil earthing device that is applicable to that distribution system is used by the design of this purpose comprises grounding transformer and arc suppression coil, and its architectural feature is described arc suppression coil for can load-carrying secondary winding; Secondary regulating capacitor group is made of many electric capacity of 1-and the parallel connection of controllable silicon branch road, and every group capacitor is subjected to pairing SCR control, and is attempted by on the secondary winding of arc suppression coil; Controller adopts single chip computer architecture, two cpu chip associated working electronic circuit.According to the change of its electric network capacitance and current of monitoring, regulate the switch combination mode of Group of Silicon Controlled Rectifier, thereby change capacitive load on the arc suppression coil secondary winding, reach the purpose of automatic tuning.
Described grounding transformer and arc suppression coil are the resin-insulated dry structure.A winding of arc suppression coil is connected on the neutral point of grounding transformer primary side.The electric capacity of described secondary regulating capacitor group and silicon controlled group number are generally the 1-6 group.As driving switch, interface adopts light-coupled isolation by two thyristor reverse parallel connections for every group of controllable silicon.Described controller is provided with the LCD LCDs of full Chinese interface.And grounding transformer, arc suppression coil, voltage transformer, current transformer, isolating switch, lightning arrester be arranged in the casing.
The utility model has following characteristics compared to existing technology:
1. relative oil-filled transformer with arc suppression coil of Resin Insulation Dry-Type Earthing Transformer and arc suppression coil, the reliability height, fire protecting performance is good, noise is low, electromagnetic interference is little, and is pollution-free, non-maintaining to surrounding environment.
2. the arc suppression coil of band secondary winding is connected on the neutral point of grounding transformer primary side (if electrical network has neutral point, arc suppression coil then is directly connected in neutral point of electric network), according to the transformer impedance principle, regulate the capacitor value of arc suppression coil secondary side capacitive load by the combination of many groups reverse parallel connection thyristor break-make, change the once equivalent induction reactance of arc suppression coil thus.
3. need not to connect series damping resistor away from resonance point automatically.This earthing device can be near full compensating coefficient when electric network single-phase earth fault, when electrical network normally moves automatically away from resonance point, avoided modes such as turn-adjusting, regulating the qi flowing in the channels crack to always work near the resonance point, the high shortcoming of displacement voltage when causing system's operate as normal need not to be connected in series damping resistance under arc suppression coil.
4. system all adopts the power electronics control mode, and high-power thyristor is as the gear change over switch, and interface adopts light-coupled isolation, and its response speed is fast, and antijamming capability is strong.Regulate the compound mode of Group of Silicon Controlled Rectifier, thereby obtain different capacitor banks, realize 16 grades or 32 grades of Current Regulation, and under 16 grades of situations, can easily realize the adjustable range of 20-100% rated capacity.Group of Silicon Controlled Rectifier can reach 6 groups at most.In addition, owing to be non-contact switch, improved its reliability when improving response speed, this is that various mechanical control methods institute is incomparable.
5. controller partly adopts two CPU associated working technology, the programming of 80C196 assembler language, and the control precision height, adjustable range is wide, can realize that perceptual offset current changes in 20-100%.
6. microcomputerized controller also is furnished with the LCD LCDs, adopts full Chinese interface, and the user can observe, revise or print the related parameter that has of operation of power networks in real time by the guidance panel on the control flow.
7. this device adopts the combined box-type structure, and transformer, arc suppression coil, voltage and current transformer, isolating switch, lightning arrester etc. are focused in the casing, and it is simple and compact for structure, floor space is little, degree of protection is high, easy for installation.
The utility model is described in further detail below in conjunction with drawings and Examples.
Fig. 1 is a box inner structure schematic top plan view;
Fig. 2 is Fig. 1 Facad structure schematic diagram.
Fig. 3 is circuit theory diagrams.
Fig. 4 is the microcomputerized controller schematic diagram.
Referring to Fig. 1, Fig. 2, grounding transformer 6, arc suppression coil 4, voltage transformer 10, current transformer 3, three-phase and single-phase isolating switch 9, lightning arrester 11, control cubicle 12 are arranged in the casing.Grounding transformer and arc suppression coil are the resin-insulated dry structure.1 is manual operation mechanism among the figure, and 2 is power cable, and 5 is the cable outlet end, and 7 is power cable, and 8 is the long cable section of ingoing line end.
Referring to Fig. 3, arc suppression coil 4 is can load-carrying secondary winding; Secondary regulating capacitor group 14 is made of 4 groups of electric capacity and the parallel connection of high-power thyristor branch road, and is attempted by on the secondary winding of arc suppression coil, and as driving switch, interface adopts light-coupled isolation by two thyristor reverse parallel connections for every group of controllable silicon 13; A winding of arc suppression coil is connected on the neutral point of grounding transformer 6 primary sides.Regulate the compound mode of Group of Silicon Controlled Rectifier, can obtain different capacitor banks, realize 16 grades or 32 grades of Current Regulation.Controller 15 adopts single chip computer architecture.
Referring to Fig. 4, microcomputerized controller adopts two cpu chip associated working electronic circuits, the programming of 80C196 assembler language, CPU1 partly realizes the AC sampling of system, the CPU2 part is then finished the calculating and the liquid crystal display of system parameters, and controller is provided with LCD LCDs, keyboard and the printing interface of full Chinese interface.
Claims (7)
1. an automatic tuning arc depression coil earthing device that is applicable to that distribution system is used comprises grounding transformer (6) and arc suppression coil (4), it is characterized in that described arc suppression coil is can load-carrying secondary winding; Secondary regulating capacitor group (14) is made of many electric capacity of 1-and the parallel connection of controllable silicon branch road, and is attempted by on the secondary winding of arc suppression coil; Controller (15) adopts single chip computer architecture, two cpu chip associated working electronic circuit.
2. automatic tuning arc depression coil earthing device according to claim 1 is characterized in that described grounding transformer and arc suppression coil are the resin-insulated dry structure.
3. automatic tuning arc depression coil earthing device according to claim 1 and 2 is characterized in that a winding of described arc suppression coil is connected on the neutral point of grounding transformer primary side.
4. automatic tuning arc depression coil earthing device according to claim 1 is characterized in that the electric capacity of described secondary regulating capacitor group and silicon controlled group number are generally the 1-6 group.
5. automatic tuning arc depression coil earthing device according to claim 4, it is characterized in that described every group of controllable silicon by two thyristor reverse parallel connections as driving switch, interface adopts light-coupled isolation.
6. automatic tuning arc depression coil earthing device according to claim 1 is characterized in that described controller is provided with the LCD LCDs of full Chinese interface.
7. automatic tuning arc depression coil earthing device according to claim 1 is characterized in that grounding transformer (6), arc suppression coil (4), voltage transformer (10), current transformer (3), isolating switch (9), lightning arrester (11) are arranged in the casing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00228292 CN2438257Y (en) | 2000-05-24 | 2000-05-24 | Automatic tuning arc suppression oil earthing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00228292 CN2438257Y (en) | 2000-05-24 | 2000-05-24 | Automatic tuning arc suppression oil earthing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2438257Y true CN2438257Y (en) | 2001-07-04 |
Family
ID=33591784
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00228292 Expired - Fee Related CN2438257Y (en) | 2000-05-24 | 2000-05-24 | Automatic tuning arc suppression oil earthing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2438257Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100403041C (en) * | 2005-12-12 | 2008-07-16 | 华北电力大学（北京） | Automatic tuning and small current grounding failure wire selection system of master slave extinction coil |
| CN100459007C (en) * | 2005-03-03 | 2009-02-04 | 华北电力大学 | Volume-regulating type arc-extinction device |
| CN103560040A (en) * | 2013-11-08 | 2014-02-05 | 宁夏天地经纬电力设备工程有限公司 | Permanent magnetic operating mechanism of intelligent circuit breaker |
| CN105356442A (en) * | 2015-11-30 | 2016-02-24 | 云南电网有限责任公司电力科学研究院 | Capacitor-tuning arc suppression system for dynamic reactive compensation adjustment |
| US11081883B2 (en) * | 2017-05-24 | 2021-08-03 | Swedish Neutral Ab | Device for earth fault current compensation in power networks |
| RU2809231C1 (en) * | 2023-07-12 | 2023-12-08 | Дмитрий Иванович Панфилов | Method for compensating influence of currents of single-phase ground faults in three-phase three-wire power lines |
-
2000
- 2000-05-24 CN CN 00228292 patent/CN2438257Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100459007C (en) * | 2005-03-03 | 2009-02-04 | 华北电力大学 | Volume-regulating type arc-extinction device |
| CN100403041C (en) * | 2005-12-12 | 2008-07-16 | 华北电力大学（北京） | Automatic tuning and small current grounding failure wire selection system of master slave extinction coil |
| CN103560040A (en) * | 2013-11-08 | 2014-02-05 | 宁夏天地经纬电力设备工程有限公司 | Permanent magnetic operating mechanism of intelligent circuit breaker |
| CN105356442A (en) * | 2015-11-30 | 2016-02-24 | 云南电网有限责任公司电力科学研究院 | Capacitor-tuning arc suppression system for dynamic reactive compensation adjustment |
| CN105356442B (en) * | 2015-11-30 | 2018-07-24 | 云南电网有限责任公司电力科学研究院 | A kind of volume-regulating type arc-extinction system that dynamic passive compensation is adjusted |
| US11081883B2 (en) * | 2017-05-24 | 2021-08-03 | Swedish Neutral Ab | Device for earth fault current compensation in power networks |
| RU2809231C1 (en) * | 2023-07-12 | 2023-12-08 | Дмитрий Иванович Панфилов | Method for compensating influence of currents of single-phase ground faults in three-phase three-wire power lines |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |