CN201504101U - Integral grounding transformator and arc extinction coil device - Google Patents
Integral grounding transformator and arc extinction coil device Download PDFInfo
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- CN201504101U CN201504101U CN2009202351789U CN200920235178U CN201504101U CN 201504101 U CN201504101 U CN 201504101U CN 2009202351789 U CN2009202351789 U CN 2009202351789U CN 200920235178 U CN200920235178 U CN 200920235178U CN 201504101 U CN201504101 U CN 201504101U
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Abstract
The utility model relates to an integral grounding transformator and arc extinction coil device, which is structurally characterized in that an iron core adopts a three-phase five-post structure, an air gap or no air gap is formed on an outer post of an iron core, a high-voltage coil has a three-phase Y0 form structure or a three-phase Z0 form structure, a low-voltage coil is arranged on iron core posts of both sides of the iron core, and the neutrality point of the three-phase Y0 form structure and the three-phase Z0 form structure is grounded through a damping resistor or is directly grounded. The utility model has the advantages that the grounding transformator and arc extinction coil device integrates a grounding transformator and an arc extinction coil, and the grounding transformator and the arc extinction coil are not separated into two devices. When a system is in normal operation, the integral grounding transformator and arc extinction coil device can be used as an idle load transformator. When the system has the single-phase grounding, the device has certain zero-sequence reactance for compensating the capacitance current of the system, so the goal of eliminating the instantaneous grounding failure is reached. The utility model can be used for in-site regulation type and pre-regulation type arc extinction coil devices, and can also be used for arc extinction coils in various principles such as turn regulation type arc extinction coils, capacitance regulation type arc extinction coils and phase control type arc extinction coils (high short circuit resistance type arc extinction coils) after adopting proper measures.
Description
Technical field
The utility model relates to a kind of integrated ground connection change arc suppression coil device that voltage is the 10kV-35k distribution network system that is used for, belong to power distribution network attachment technique field.
Background technology
The voltage of the power distribution network of China is 10kV-35kV, and these system's overwhelming majority are grounding through arc, and a spot of rural power distribution net is an isolated neutral system.When adopting the grounding through arc mode, because the no neutral point of these systems itself need install the neutral point of manufacturing that the grounding transformer suitable with the arc suppression coil capacity is artificial additional.Typical ground connection change has the winding of two sections equal turn numbers on every iron core mutually, following winding links to each other with another last winding mutually with opposite polarity.When flowing through the zero sequence magnetic flux in the winding, because the polarity of winding is opposite up and down, the magnetic potential of zero sequence is zero.As shown in fig. 1.In addition, except ground connection becomes, also have the arc suppression coil of string between ground connection change neutral point and ground, as shown in Figure 2.
Summary of the invention
The utility model proposes a kind of ground connection and become the arc suppression coil device, be intended to ground connection change and arc suppression coil are combined, no longer be divided into two devices of separation.
Technical solution of the present utility model: it is characterized in that the three-phase and five-pole structure that adopts unshakable in one's determination, column jacket unshakable in one's determination has air gap or does not have air gap, the structure of high-tension coil has three-phase Y0 form or three-phase Z0 form, low-voltage coil is located on the core limb of both sides unshakable in one's determination, and the neutral point of three-phase Y0 version and three-phase Z0 version is by damping resistance ground connection or direct ground connection.
Advantage of the present utility model: ground connection becomes the arc suppression coil device ground connection change and arc suppression coil is combined, and no longer is divided into two devices of separation.When system normally moves, the suitable and unloaded transformer of this device; When system's generation single-phase earthing, device presents certain zero sequence reactance, the capacitance current of system is compensated, thereby reach the purpose that instantaneity earth fault is eliminated.This structure can be used for the arc suppression coil device with mode and presetting system.Take adequate measures just can be used for the arc suppression coil of the various principles of turn-adjusting, capacitor tuning type and phase control type (high short-circuit impedance formula).The iron core of this device adopts the structure of three-phase and five-pole, and the air gap that column jacket can be provided with certain-length can not have air gap yet.
Description of drawings
Accompanying drawing 1 is traditional ground connection power transformation schematic diagram.
Accompanying drawing 2 is traditional arc suppression coil electrical schematic diagrams.
Accompanying drawing 3 is that ground connection becomes arc suppression coil composite set (Y0 connection) electrical schematic diagram.
Accompanying drawing 4 is that ground connection change arc suppression coil composite set structure is shown the hysteria intention.
Embodiment
Integrated ground connection becomes the arc suppression coil device, its structure is the three-phase and five-pole structure that adopts unshakable in one's determination, column jacket unshakable in one's determination has air gap or does not have air gap, the structure of high-tension coil has three-phase Y0 form or three-phase Z0 form, low-voltage coil is located on the core limb of both sides unshakable in one's determination, and the neutral point of three-phase Y0 version and three-phase Z0 version is by damping resistance ground connection or direct ground connection.
Described high-tension coil is connected with load switch, adjusts the number of turn of high-tension coil by regulating loaded switch, realizes the adjustment of compensating reactance.
Described low-voltage coil connects controllable silicon, by regulating thyristor operating angle, realizes the adjustment of compensating reactance.
Described low-voltage coil Shunt Capacitor Unit, this capacitor group are that an electric capacity or a plurality of electric capacity and connecing forms.By input capacitor group what, realize the adjustment of compensating reactance.
Contrast accompanying drawing 3, its structure are that the core limb of both sides unshakable in one's determination can be provided with low-voltage coil and also low-voltage coil can be set.Low-voltage coil is not set makes fixing arc suppression coil device; Coil is set can direct short-circuit also can utilizes the element control angle of flow such as controllable silicon to regulate equivalent compensating reactance, can also insert some capacitors at low-voltage coil and regulate equivalent reactance to reach the purpose of regulating compensating reactance.When being used as the arc suppression coil of presetting system, damping resistance can be connected on and be serially connected in the grounded circuit, also can be connected on the secondary low-voltage coil sides.
The version of coil can have three-phase Y0 connection and three-phase Z0 connection, wherein
Three-phase Y0 connection, similar with traditional transformer, the core limb of both sides unshakable in one's determination can be provided with low-voltage coil also can not be provided with low-voltage coil.Low-voltage coil is not set makes fixing arc suppression coil device; Coil is set can direct short-circuit also can utilizes the element control angle of flow such as controllable silicon to regulate equivalent compensating reactance, can also insert some capacitors at low-voltage coil and regulate equivalent reactance to reach the purpose of regulating compensating reactance.When being used as the arc suppression coil of presetting system, damping resistance can be connected on and be serially connected in the grounded circuit, also can be connected on the secondary low-voltage coil sides.
Three-phase Z0, similar with traditional ground connection change, just the number of turn of two windings is unequal up and down, (adding the iron core of the certain air gap of two cornices) of adopting 5 pillars unshakable in one's determination, as shown in Figure 2.
Effect becomes the same with common ground connection when normal operation, during system generation single phase ground fault, has zero-sequence current to flow through in the winding.Because the number of turn of winding is different up and down, the zero sequence magnetic potential is non-vanishing, in order to give path of zero sequence magnetic potential, so increased the 4th, 5 magnetic post.
The winding that the utility model has utilized ground connection to become provides the zero sequence magnetic potential, and the iron core of increase provides path for the zero sequence magnetic flux, regulate every post up and down the size of the number of turn difference of two coils and the air gap inductance that just can regulate new arc suppression coil be offset current.
The arc suppression coil device of Z wiring can be by regulating every post automatic offset current of regulating of number of turn difference realization of two coils up and down.Damping resistance can still be connected on grounded circuit, also can realize by the resistance of establishing a secondary winding and insert certain value on the core limb of band air gap on winding.
Claims (4)
1. integrated ground connection becomes the arc suppression coil device, it is characterized in that the three-phase and five-pole structure that adopts unshakable in one's determination, column jacket unshakable in one's determination has air gap or does not have air gap, the structure of high-tension coil has three-phase Y0 form or three-phase Z0 form, low-voltage coil is located on the core limb of both sides unshakable in one's determination, and the neutral point of three-phase Y0 version and three-phase Z0 version is by damping resistance ground connection or direct ground connection.
2. integrated ground connection according to claim 1 becomes the arc suppression coil device, it is characterized in that described high-tension coil is connected with load switch.
3. integrated ground connection according to claim 1 becomes the arc suppression coil device, it is characterized in that described low-voltage coil connects controllable silicon.
4. integrated ground connection according to claim 1 becomes the arc suppression coil device, it is characterized in that described low-voltage coil Shunt Capacitor Unit, and this capacitor group is that an electric capacity or a plurality of electric capacity and connecing forms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202351789U CN201504101U (en) | 2009-08-10 | 2009-08-10 | Integral grounding transformator and arc extinction coil device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202351789U CN201504101U (en) | 2009-08-10 | 2009-08-10 | Integral grounding transformator and arc extinction coil device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201504101U true CN201504101U (en) | 2010-06-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202351789U Expired - Fee Related CN201504101U (en) | 2009-08-10 | 2009-08-10 | Integral grounding transformator and arc extinction coil device |
Country Status (1)
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| CN (1) | CN201504101U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106877306A (en) * | 2017-03-08 | 2017-06-20 | 内蒙古电力(集团)有限责任公司内蒙古电力科学研究院分公司 | Arc suppression coil of power distribution network distributed compensation device integrated with distribution transformer |
| CN110086161A (en) * | 2019-06-21 | 2019-08-02 | 吕婧 | A kind of magnetism-regulating type arc suppression coil earthing system |
| CN110111985A (en) * | 2018-12-21 | 2019-08-09 | 海南金盘智能科技股份有限公司 | Transformer group |
| CN110661244A (en) * | 2019-10-27 | 2020-01-07 | 徐州和纬信电科技有限公司 | Arc suppression coil complete device |
| WO2023087435A1 (en) * | 2021-11-19 | 2023-05-25 | 广东福德电子有限公司 | Improved grounding transformer doubling as station transformer |
-
2009
- 2009-08-10 CN CN2009202351789U patent/CN201504101U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106877306A (en) * | 2017-03-08 | 2017-06-20 | 内蒙古电力(集团)有限责任公司内蒙古电力科学研究院分公司 | Arc suppression coil of power distribution network distributed compensation device integrated with distribution transformer |
| CN106877306B (en) * | 2017-03-08 | 2020-05-08 | 内蒙古电力(集团)有限责任公司内蒙古电力科学研究院分公司 | Distribution network arc suppression coil and distribution transformer integrated distributed compensation device |
| CN110111985A (en) * | 2018-12-21 | 2019-08-09 | 海南金盘智能科技股份有限公司 | Transformer group |
| CN110086161A (en) * | 2019-06-21 | 2019-08-02 | 吕婧 | A kind of magnetism-regulating type arc suppression coil earthing system |
| CN110661244A (en) * | 2019-10-27 | 2020-01-07 | 徐州和纬信电科技有限公司 | Arc suppression coil complete device |
| WO2023087435A1 (en) * | 2021-11-19 | 2023-05-25 | 广东福德电子有限公司 | Improved grounding transformer doubling as station transformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100609 Termination date: 20110810 |