CN107332226B - Overvoltage suppressing system based on intelligent switch - Google Patents
Overvoltage suppressing system based on intelligent switch Download PDFInfo
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- CN107332226B CN107332226B CN201710755937.3A CN201710755937A CN107332226B CN 107332226 B CN107332226 B CN 107332226B CN 201710755937 A CN201710755937 A CN 201710755937A CN 107332226 B CN107332226 B CN 107332226B
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- overvoltage
- intelligent switch
- control module
- voltage
- transformer
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
- H02H9/041—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage using a short-circuiting device
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/20—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess voltage
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/08—Limitation or suppression of earth fault currents, e.g. Petersen coil
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- Emergency Protection Circuit Devices (AREA)
Abstract
The invention discloses the Overvoltage suppressing systems based on intelligent switch.In the present invention: Overvoltage suppressing system includes overvoltage absorbing device, over-voltage protector and arc-extinction device；Setting dynamic oxidation zinc resistor valve sheet and the ferromagnetic harmonic elimination unit of overvoltage in overvoltage absorbing device；Fuse, voltage transformer and current transformer are set between Overvoltage suppressing system and three-phase circuit；It include that earthing switch control module, damping resistance monitoring control module and ground resistance monitor control module in the ferromagnetic harmonic elimination unit of overvoltage.The present invention is by using protected modes such as earthing switch, damping resistance and ground resistances, having effectively eliminated and having crossed ferromagnetic resonance voltage by the way that the ferromagnetic harmonic elimination unit of overvoltage is arranged in overvoltage absorbing device；Intelligent control and adjusting are carried out to overvoltage absorbing device, over-voltage protector and arc-extinction device by intelligent switch, and effective protection is carried out to fuse and voltage transformer.
Description
Technical field
The invention belongs to overvoltage protection system fields, more particularly to the Overvoltage suppressing system based on intelligent switch.
Background technique
Overvoltage protection is the particularly important component part of power system security maintenance, long-term in China's 3-35KV system
There are following several overvoltage: the arc light mistake that generates when switching overvoltage that breaker on-off action process generates, single-phase earthing
Atmospheric over-voltage, the resonance overvoltage etc. generated when voltage and lightning stroke.Cause often to occur in electric system cable blow out, electricity
Motivation insulation breakdown, Explosion of on Arrester and voltage transformer such as burn at the accidents.Such accident occur the reason of, in addition to in system
The performance of the overvoltage protection product of installing has outside the Pass, and the complexity of system itself has an important influence overvoltage, for not
Same system, overvoltage Producing reason and mode are also different, and also some power transmission and distribution and load system can also generate ferromagnetic
How resonance overvoltage makes up excessively electric in system the over-voltage condition for the different situations that not homologous ray different modes generate
The deficiency of protection element and device is pressed, and improves the overvoltage protection level of overvoltage protection system, becomes construction high quality
The important foundation stone of electric system.
Summary of the invention
The purpose of the present invention is to provide the Overvoltage suppressing system based on intelligent switch, by overvoltage absorbing device,
Over-voltage protector and arc-extinction device carry out high efficiency smart control with intelligent switch and cooperation are adjusted, so as to effective
To the carry out Overvoltage suppressing of electric system and protection.
In order to solve the above technical problems, the present invention is achieved by the following technical solutions:
The present invention is the Overvoltage suppressing system based on intelligent switch, including Overvoltage suppressing system, overvoltage absorb dress
It sets and intelligent switch, Overvoltage suppressing system includes overvoltage absorbing device, over-voltage protector and arc-extinction device；Overvoltage is inhaled
Setting dynamic oxidation zinc resistor valve sheet and the ferromagnetic harmonic elimination unit of overvoltage in receiving apparatus；Intelligent switch is by detecting and controlling route
It is connected with the dynamic oxidation zinc resistor valve sheet in overvoltage absorbing device；Intelligent switch passes through data transmission of monitoring and control route
It is connected with the ferromagnetic harmonic elimination unit of overvoltage in overvoltage absorbing device；Intelligent switch is transmitted and is controlled route by signal monitoring
It is connected with the arc-extinction device in Overvoltage suppressing system；Intelligent switch is transmitted by data monitoring and action control module and excessively electric
The over-voltage protector constrained in system processed is connected；It is mutual that fuse, voltage are set between Overvoltage suppressing system and three-phase circuit
Sensor and current transformer.
It wherein, include scm managing system, signal processing unit, data acquisition unit and triggering amplification in intelligent switch
Circuit unit；Data acquisition unit carries out data information monitoring to the secondary sides of voltage transformer and current transformer, at signal
Reason unit on mutual inductor heat transfer agent and data acquisition unit monitor collected data information and handled and judged,
Data and signal driving are transferred to scm managing system by triggering amplifier circuit unit and carry out network analysis and decision.
Wherein, include in the ferromagnetic harmonic elimination unit of overvoltage earthing switch control module, damping resistance monitoring control module and
Ground resistance monitors control module；Earthing switch control module: it opens to setting earthing switch on transformer neutral point and in ground connection
It shuts installing and device is monitored and controlled；Damping resistance monitors control module: damping resistance is connected to TV open-triangular winding both ends,
The setting monitoring sensing module in the circuit of the damping resistance；Ground resistance monitors control module: to the high pressure of voltage transformer
Ground resistance branch is set on the neutral point of winding or setting zero sequential potential transformer is grounded, and in the high voltage winding of voltage transformer
Setting monitoring sensing module in the neutral point route of group.
Wherein, the fuse of the three-phase branch road on three-phase circuit is connected with protective device of shoving, and voltage transformer passes through
Protective device of shoving couples with three-phase circuit；Intelligent switch by data monitoring and signal control module respectively with fuse, electricity
The monitoring control unit of pressure mutual inductor and current transformer is connected.
It wherein, include discharge counter and real-time monitor in over-voltage protector, discharge counter coupled in series is in mistake
On the lightning-arrest or over-voltage route of voltage protector, power down self-sustaining module is set in real-time monitor.
The invention has the following advantages:
1, the present invention in overvoltage absorbing device by installing dynamic oxidation zinc resistor valve sheet, so as to fast and effective
Absorption system generated big energy when overvoltage occurs；
2, the present invention utilizes earthing switch, resistance by the way that the ferromagnetic harmonic elimination unit of overvoltage is arranged in overvoltage absorbing device
The protected modes such as buffer resistance and ground resistance have effectively eliminated and have crossed ferromagnetic resonance voltage；
3, the present invention carries out intelligent control to overvoltage absorbing device, over-voltage protector and arc-extinction device by intelligent switch
System and adjusting, and effective protection is carried out to fuse and voltage transformer, it greatly reduces system and overvoltage, single-phase earthing occurs
With associated loss caused when other failures；
4, the present invention is cooperated by the scm managing system of intelligent switch and counting, monitoring device, can recorde
Position and the number etc. that overvoltage and dependent failure occur in system, can provide valid data for the Power System Analysis in later period
Basis.
Certainly, it implements any of the products of the present invention and does not necessarily require achieving all the advantages described above at the same time.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, will be described below to embodiment required
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for ability
For the those of ordinary skill of domain, without creative efforts, it can also be obtained according to these attached drawings other attached
Figure.
Fig. 1 is the structural schematic diagram of the Overvoltage suppressing system of the invention based on intelligent switch.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts all other
Embodiment shall fall within the protection scope of the present invention.
It please refers to shown in attached drawing 1, the present invention is the Overvoltage suppressing system based on intelligent switch, including Overvoltage suppressing system
System, overvoltage absorbing device and intelligent switch, Overvoltage suppressing system include overvoltage absorbing device, over-voltage protector and disappear
Arc device；Setting dynamic oxidation zinc resistor valve sheet and the ferromagnetic harmonic elimination unit of overvoltage in overvoltage absorbing device；Intelligent switch is logical
It crosses detection and control route is connected with the dynamic oxidation zinc resistor valve sheet in overvoltage absorbing device；Intelligent switch is passed by data
Defeated monitoring and control route are connected with the ferromagnetic harmonic elimination unit of overvoltage in overvoltage absorbing device；Intelligent switch is supervised by signal
It surveys transmission and control route is connected with the arc-extinction device in Overvoltage suppressing system；Intelligent switch is transmitted and is moved by data monitoring
Make control module to be connected with the over-voltage protector in Overvoltage suppressing system；It is set between Overvoltage suppressing system and three-phase circuit
Set fuse, voltage transformer and current transformer.
It further, include scm managing system, signal processing unit, data acquisition unit and triggering in intelligent switch
Amplifier circuit unit；Data acquisition unit carries out data information monitoring, letter to the secondary side of voltage transformer and current transformer
Number processing unit on mutual inductor heat transfer agent and data acquisition unit monitor collected data information carry out processing and
Judge, data and signal driving are transferred to by scm managing system by triggering amplifier circuit unit and carries out network analysis and determines
Plan.
It further, include earthing switch control module, damping resistance monitoring control mould in the ferromagnetic harmonic elimination unit of overvoltage
Block and ground resistance monitor control module；Earthing switch control module: it to setting earthing switch on transformer neutral point and is connecing
Device is monitored and controlled in installing on ground switch；Damping resistance monitors control module: connecting and damps to TV open-triangular winding both ends
Resistance, the setting monitoring sensing module in the circuit of the damping resistance；Ground resistance monitors control module: to voltage transformer
Ground resistance branch is set on the neutral point of high-voltage winding or setting zero sequential potential transformer is grounded, and in the height of voltage transformer
Press setting monitoring sensing module in the neutral point route of winding.
Further, the fuse of the three-phase branch road on three-phase circuit is connected with protective device of shoving, voltage transformer
Coupled by shoving protective device with three-phase circuit；Intelligent switch by data monitoring and signal control module respectively with fusing
Device, voltage transformer and current transformer monitoring control unit be connected.
It further, include discharge counter and real-time monitor, discharge counter coupled in series in over-voltage protector
On the lightning-arrest or over-voltage route of over-voltage protector, power down self-sustaining module is set in real-time monitor.
Further the present invention is illustrated and is illustrated:
The Neutral Grounding through Resistance in Electrical of mutual inductor high-voltage winding side, resistance can be it is linear, be also possible to it is nonlinear,
For nonlinear resistance, at work, neutral point above earth potential can be kept to be no more than the dielectric level of mutual inductor N-terminal over the ground；When
Mutual inductor high-voltage winding side after Neutral Grounding through Resistance in Electrical, ground resistance limits discharge current, to prevent fusing
The generation of device fusing and resonance.
TV open-triangular winding both ends connect damping resistance, when ferromagnetic resonance occurs for voltage transformer, three-phase circuit
Neutral point generates offset, causes three-phase circuit asymmetric, and saturated phenomenon occurs in voltage transformer, while zero sequence fluxes occurs, high
Pressure winding flows through zero-sequence current, when TV angular aperture two is terminated with resistance, then generates zero-sequence current, this electric current is to high-voltage winding
In the magnetic flux established of zero-sequence current play demagnetizing effect.
Earthing switch is set on transformer neutral point, is in order to avoid transformer neutral point generates overvoltage；To mother
Before line power supply, the earthing switch of transformer neutral point is first closed conducting, earthing switch is pulled open after power transmission again or first zygonema road is disconnected
Road device again to busbar charging, completed by intelligent switching control by the movement of earthing switch.
The core cell of intelligent switch is scm managing system, and intelligent switch acquires exchange mould by data acquisition unit
Analog quantity and switching signal amount, the acquisition of analog signal from current transformer and voltage transformer, for voltage transformer and
Collected information on current transformer needs to carry out processing conversion by signal processing unit, and passes through triggering amplification electricity
Road unit carries out analog signal driving operation.
The number of overvoltage protection each time is recorded and is protected accordingly by the discharge counter in over-voltage protector
It deposits, and analysis is monitored to the position that overvoltage and dependent failure occurs using real-time monitor, can be the electric power in later period
Network analysis provides data and supports, and what can effectively be carried out is adjusted and repair to system and device etc. and operate.
In the description of this specification, the description of reference term " one embodiment ", " example ", " specific example " etc. means
Particular features, structures, materials, or characteristics described in conjunction with this embodiment or example are contained at least one implementation of the invention
In example or example.In the present specification, schematic expression of the above terms may not refer to the same embodiment or example.
Moreover, particular features, structures, materials, or characteristics described can be in any one or more of the embodiments or examples to close
Suitable mode combines.
Present invention disclosed above preferred embodiment is only intended to help to illustrate the present invention.There is no detailed for preferred embodiment
All details are described, are not limited the invention to the specific embodiments described.Obviously, according to the content of this specification,
It can make many modifications and variations.These embodiments are chosen and specifically described to this specification, is in order to better explain the present invention
Principle and practical application, so that skilled artisan be enable to better understand and utilize the present invention.The present invention is only
It is limited by claims and its full scope and equivalent.
Claims (3)
1. the Overvoltage suppressing system based on intelligent switch, including Overvoltage suppressing system, overvoltage absorbing device and intelligence are opened
It closes, setting dynamic oxidation zinc resistor valve sheet and the ferromagnetic harmonic elimination unit of overvoltage in the overvoltage absorbing device；The overvoltage
Fuse, voltage transformer and current transformer are set between inhibition system and three-phase circuit；The intelligent switch passes through detection
And control route is connected with the dynamic oxidation zinc resistor valve sheet in overvoltage absorbing device；The intelligent switch is transmitted by data
Monitoring and control route are connected with the ferromagnetic harmonic elimination unit of overvoltage in overvoltage absorbing device；
It is characterized by:
The intelligent switch is connected by detecting and controlling route with the dynamic oxidation zinc resistor valve sheet in overvoltage absorbing device；
The intelligent switch transmits and controls route by signal monitoring and is connected with the arc-extinction device in Overvoltage suppressing system；
The intelligent switch passes through the overvoltage protection in data monitoring transmission and action control module and Overvoltage suppressing system
Device is connected；
It include scm managing system, signal processing unit, data acquisition unit and triggering amplifying circuit in the intelligent switch
Unit；The data acquisition unit carries out data information monitoring to the secondary side of voltage transformer and current transformer；The letter
Number processing unit on mutual inductor heat transfer agent and data acquisition unit monitor collected data information carry out processing and
Judge, data and signal driving are transferred to by scm managing system by triggering amplifier circuit unit and carries out network analysis and determines
Plan；
It include discharge counter and real-time monitor in the over-voltage protector, the discharge counter coupled in series is excessively electric
It presses on the lightning-arrest or over-voltage route of protector, power down self-sustaining module is set in the real-time monitor.
2. the Overvoltage suppressing system according to claim 1 based on intelligent switch, it is characterised in that: the overvoltage iron
It include that earthing switch control module, damping resistance monitoring control module and ground resistance monitor control module in magnetic harmonic elimination unit；
The earthing switch control module: it is monitored and controlled to earthing switch is arranged on transformer neutral point and is installed on earthing switch
Device；
The damping resistance monitors control module: damping resistance is connected to TV open-triangular winding both ends, in the damping resistance
Setting monitoring sensing module in circuit；
The ground resistance monitors control module: to setting ground resistance branch on the neutral point of the high-voltage winding of voltage transformer
Or setting zero sequential potential transformer is grounded, and the setting monitoring sensing mould in the neutral point route of the high-voltage winding of voltage transformer
Block.
3. the Overvoltage suppressing system according to claim 1 based on intelligent switch, it is characterised in that: the three-phase circuit
On the fuse of three-phase branch road be connected with protective device of shoving, the voltage transformer passes through protective device and the three-phase of shoving
Circuit connection；The intelligent switch by data monitoring and signal control module respectively with fuse, voltage transformer and electric current
The monitoring control unit of mutual inductor is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710755937.3A CN107332226B (en) | 2017-08-29 | 2017-08-29 | Overvoltage suppressing system based on intelligent switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710755937.3A CN107332226B (en) | 2017-08-29 | 2017-08-29 | Overvoltage suppressing system based on intelligent switch |
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| Publication Number | Publication Date |
|---|---|
| CN107332226A CN107332226A (en) | 2017-11-07 |
| CN107332226B true CN107332226B (en) | 2019-10-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710755937.3A Active CN107332226B (en) | 2017-08-29 | 2017-08-29 | Overvoltage suppressing system based on intelligent switch |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113161993B (en) * | 2021-02-23 | 2023-01-20 | 广东电网有限责任公司电力科学研究院 | Low-frequency oscillation suppression method and device for electromagnetic voltage transformer |
| CN113690862A (en) * | 2021-08-23 | 2021-11-23 | 广东电网有限责任公司 | Device and method for eliminating overvoltage in flexible direct current system |
| CN116937522A (en) * | 2023-07-14 | 2023-10-24 | 杭州科丰电子股份有限公司 | Intelligent switch overvoltage protection method, device, system, electronic device and storage medium |
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|---|---|---|---|---|
| CN2225102Y (en) * | 1995-02-17 | 1996-04-17 | 邯郸市邯山电力自动化研究所 | Ground compensator of automatic tracking and regulating arc-extinguishing coil |
| CN102290805A (en) * | 2011-08-12 | 2011-12-21 | 四川电器集团股份有限公司 | Electric arc grounding overvoltage limiting device applied to medium-voltage distribution system |
| CN102623985A (en) * | 2012-01-17 | 2012-08-01 | 合肥凯高电气设备有限公司 | Novel comprehensive grounding protection and route selection device for medium-voltage power distribution system |
| CN205195264U (en) * | 2015-11-11 | 2016-04-27 | 樊爱东 | Intelligent arc suppressing coil controller, arc extinction coil arrangement of alternative tripping operation |
| CN106505547A (en) * | 2016-12-12 | 2017-03-15 | 重庆市亚东亚集团变压器有限公司 | A kind of parallel medium resistance device |
-
2017
- 2017-08-29 CN CN201710755937.3A patent/CN107332226B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2225102Y (en) * | 1995-02-17 | 1996-04-17 | 邯郸市邯山电力自动化研究所 | Ground compensator of automatic tracking and regulating arc-extinguishing coil |
| CN102290805A (en) * | 2011-08-12 | 2011-12-21 | 四川电器集团股份有限公司 | Electric arc grounding overvoltage limiting device applied to medium-voltage distribution system |
| CN102623985A (en) * | 2012-01-17 | 2012-08-01 | 合肥凯高电气设备有限公司 | Novel comprehensive grounding protection and route selection device for medium-voltage power distribution system |
| CN205195264U (en) * | 2015-11-11 | 2016-04-27 | 樊爱东 | Intelligent arc suppressing coil controller, arc extinction coil arrangement of alternative tripping operation |
| CN106505547A (en) * | 2016-12-12 | 2017-03-15 | 重庆市亚东亚集团变压器有限公司 | A kind of parallel medium resistance device |
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| CN107332226A (en) | 2017-11-07 |
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