CN106208023B - A kind of single-phase arc overvoltage limits device based on metallic ground principle - Google Patents
A kind of single-phase arc overvoltage limits device based on metallic ground principle Download PDFInfo
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- CN106208023B CN106208023B CN201610822479.6A CN201610822479A CN106208023B CN 106208023 B CN106208023 B CN 106208023B CN 201610822479 A CN201610822479 A CN 201610822479A CN 106208023 B CN106208023 B CN 106208023B
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- 238000012544 monitoring process Methods 0.000 claims abstract description 30
- 238000005457 optimization Methods 0.000 claims abstract description 21
- 238000011156 evaluation Methods 0.000 claims abstract description 19
- 230000008030 elimination Effects 0.000 claims abstract description 8
- 238000003379 elimination reaction Methods 0.000 claims abstract description 8
- 238000004804 winding Methods 0.000 claims abstract description 8
- 230000001012 protector Effects 0.000 claims abstract description 7
- 238000005265 energy consumption Methods 0.000 claims description 24
- 230000005540 biological transmission Effects 0.000 claims description 14
- 238000004891 communication Methods 0.000 claims description 10
- 238000012545 processing Methods 0.000 claims description 7
- 230000003321 amplification Effects 0.000 claims description 6
- 230000007935 neutral effect Effects 0.000 claims description 6
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 6
- 230000008447 perception Effects 0.000 claims description 6
- 238000012546 transfer Methods 0.000 claims description 6
- 230000002159 abnormal effect Effects 0.000 claims description 4
- 241001269238 Data Species 0.000 claims description 3
- 235000019800 disodium phosphate Nutrition 0.000 claims description 3
- 230000005059 dormancy Effects 0.000 claims description 3
- 230000009977 dual effect Effects 0.000 claims description 3
- 238000005562 fading Methods 0.000 claims description 3
- 230000007246 mechanism Effects 0.000 claims description 3
- 230000001360 synchronised effect Effects 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 2
- 230000000903 blocking effect Effects 0.000 abstract description 3
- 230000006870 function Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000013144 data compression Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000002028 premature Effects 0.000 description 2
- 230000001629 suppression Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
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- 238000004088 simulation Methods 0.000 description 1
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- 238000006467 substitution reaction Methods 0.000 description 1
- 238000010257 thawing Methods 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
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
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- 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
- H02H3/08—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 current
-
- 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
- H02H9/06—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage using spark-gap arresters
-
- H02J13/0006—
Landscapes
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
A kind of single-phase arc overvoltage limits device based on metallic ground principle; including monitoring modular and limits device; the monitoring modular includes performance evaluation unit, network chooses unit and network optimization unit, the limits device include high voltage isolator BD, a harmonic elimination apparatus GDQ, intelligent controller GDM, the voltage transformer pt with auxiliary secondary winding, high-voltage and current-limitation fuse component FU, can individual-phase control high-pressure vacuum contactor JZ and three phase combined over-voltage protector GDB；The device can require that relevant device is moved back in throwing according to user, introduce the magnitude of current as criterion, realize a variety of blocking functions, it is ensured that network system power supply is reliable.
Description
Technical field
The invention is related to technical field of electric power, and in particular to a kind of single-phase arc light based on metallic ground principle is excessively electric
Press limits device.
Background technology
Most of following power networks of China 35kV use the neutral point indirect earthing method of operation.Work as neutral point indirect earthing
When single-phase intermittent arc earthing failure occurs for system, electric arc repeatedly constantly extinguishes and restriked, and causes on system direct-to-ground capacitance
Electric charge repeatedly constantly accumulate and redistribute, cause higher-order of oscillation overvoltage on the inductor-capacitor loop of non-faulting phase.
The accumulation that the overvoltage of amplitude exacerbates the solid insulations such as cable is destroyed, while arc grounding over-voltage will also
Cause PT or fuse melting, even more serious will cause Explosion of on Arrester.
Solve the problems, such as that arc grounding using system neutral earthing mode is changed, is connect using small resistor in early time
Ground, power supply reliability is sacrificed to solve arc grounding, develops into later using arc suppression coil principle, utilizes inductance and the electricity of electric capacity
Voltage-current characteristic is different, using inductive current come compensating electric capacity electric current, because arc grounding be high frequency content, so by power frequency design
Arc suppression coil can not compensate high frequency electric, conversely because the access of coil will also produce many side effects, such as：Route selection is not
Standard, easily produce resonance, transferring over-voltage etc..
The content of the invention
The purpose of the invention is solve above-mentioned weak point of the prior art and provide one kind and connect based on metal
The single-phase arc overvoltage limits device of ground principle.
The purpose of the invention is achieved through the following technical solutions：
A kind of single-phase arc overvoltage limits device based on metallic ground principle, including monitoring modular and limits device,
The monitoring modular, which includes performance evaluation unit, network selection unit and network optimization unit, the limits device, includes high pressure
Disconnecting switch BD, a harmonic elimination apparatus GDQ, intelligent controller GDM, the voltage transformer pt with auxiliary secondary winding, high pressure
Limiting fuse component FU, can individual-phase control high-pressure vacuum contactor JZ and three phase combined over-voltage protector GDB.
Preferably, monitoring modular is monitored in real time using wireless sensor network to operation of power networks, wireless sensor network
Network enters row data communication using zigbee agreement；
A, performance evaluation unit, the two-stage appraisement system analyzed Monitoring Performance is established, is established according to evaluation object
Comprehensive evaluation index, one-level evaluation object are user's perceptual performance, network aware performance and node perceived performance, user's perceptibility
Can two-level appraisement object be monitoring network life cycle, perceived accuracy and perceive time delay, the two-level appraisement of network aware performance
Object is monitoring network coverage rate, energy expenditure and transmission reliability, and the two-level appraisement object of node perceived performance is node work(
Rate control, dormancy mechanism and time synchronized；
B, network chooses unit, according to influence of the heterogeneous networks topological structure to comprehensive evaluation index, using clustered network
Topological structure；
C, network optimization unit, sensor network energy consumption is optimized, including model establishes subelement and energy optimization
Subelement；
Model establishes subelement：Monitored area is the circle that radius is r, and n sensor node is evenly distributed with region, is adopted
With fan-shaped sub-clustering heterogeneous network topology, base-station node is located at the center of circle, and leader cluster node is located at sector region center, cluster inner sensor section
Point can only communicate with leader cluster node, and leader cluster node can only be with base-station node communication, and cluster inner sensor node is sent data to
Leader cluster node processing, leader cluster node transfer data to base-station node after data are compressed with processing；
Energy optimization subelement：
The ENERGY E that distance is consumed by transmitting 1 bit data between d sensor nodeTFor：
In formula, EsThe energy consumption of transtation mission circuit or receiving circuit when being transmission or recruiting unit's bit, EfIt is free space channel
Energy needed for power amplification, E under modelmIt is energy, d needed for power amplification under multipath fading channels model0For Channel assignment threshold
Value, d0∈[80,95]；
The energy that the data that leader cluster node merges 1 bit are consumed is Ed；
It is d to base-station node distance, the data acquisition range of the cluster is if the leader cluster node CT of certain cluster, the perception radius r
Central angle is 2 θ, radius d+r, and inscribed circle radius is d-r sector region, a fan-shaped sensor in data acquisition range
Central angle corresponding to the S of node deployment region is d α, and the difference of interior outer radius is dx, then sensor node number is in this S regionSquare distance apart from leader cluster node CT is y2=x2+d2- 2xdcos α, cluster interior nodes and leader cluster node away from
From less than d0, all the sensors node is respectively transmitted b bit datas to leader cluster node CT energy consumption E in clusterinFor：
Leader cluster node CT is received, merged, the energy consumption E of transmission dataoutFor：
Cluster total energy consumption E in a data transfer where leader cluster node CTallFor：
Eall=Ein+Eout；
Transmission energy consumption is optimized using Swarm Intelligence Algorithm, optimization aim is monitoring range, monitoring node number, perceived
Radius and leader cluster node, apart from these topological parameters, understand these topological parameters to node cluster energy first to base-station node
The influence of consumption, a Parameters variation is set, ensure that other specification is constant, draw the pass between node cluster energy consumption and running parameter
System, is then iterated optimization to it using Swarm Intelligence Algorithm.
Preferably, all parameters of the limits device are using digitlization adjustment.
Preferably, a harmonic elimination apparatus GDQ is loaded between voltage transformer pt first winding neutral point and ground.
Preferably, the intelligent controller GDM uses dual CPU, and host CPU uses 32 bit DSPs as core.
Preferably, the intelligent controller GDM includes communication interface RS485, CAN, can moment monitoring system state,
Make accurate judgement to the abnormal operating condition of appearance, and precise acquisition and power system various parameters can be shown.
Preferably, the supply voltage of the intelligent controller GDM is DC220V/110V ± 10%.
Preferably, the voltage transformer pt has high-performance anti-saturation, and its parameter can be matched by user's requirement.
Preferably, the high-voltage and current-limitation fuse component FU can when electric current exceedes limit value quick fuse.
Preferably, the three phase combined over-voltage protector GDB is used for overvoltage caused by limits device a variety of causes.
The beneficial effect of the invention：
1st, the invention is monitored to power network, can find failure early, is easy to take measures；
2nd, invention wireless sensor network, with leader cluster node the perception radius, communication distance, data compression ratio and transmission week
Phase is optimization aim, realizes the minimality and harmony of network energy consumption, avoids leader cluster node premature death, so as to extend net
The life cycle of network；
3rd, the invention utilizes the fast and accurately data-handling capacity of Digital Signal Processing, realizes Fourier analysis, passes through
Analysis to parameters such as system busbar three-phase voltage and frequencies, it is accurately judged to power network arc grounding, transient process and single-phase gold
Category ground connection, device can require that relevant device is moved back in throwing according to user, introduce the magnitude of current as criterion, realize a variety of blocking functions, really
Insurance system power supply is reliable；
4th, all parameters of the invention have been abandoned the conventional simulated annealing method with potentiometer, carried using digitlization adjustment
The high reliability and stability of complete machine；
5th, the invention has extremely strong anti-electromagnetic interference capability, can be used in strongly disturbing complex environment；
6th, the invention can provide blocking function in some special network systems.
7th, the invention can moment monitoring system state, to the abnormal operating condition of appearance (arc grounding, metallic ground,
PT broken strings etc.) make accurate judgement, and precise acquisition and power system various parameters can be shown, without installing voltage again
The token meter such as table, ammeter.
8th, when system jam, the data parameters of instant of failure are able to record, are easy to refer to during maintenance, cause of accident
Analysis.
Brief description of the drawings
Innovation and creation are described further using accompanying drawing, but the embodiment in accompanying drawing does not form and the invention is appointed
What is limited, on the premise of not paying creative work, can also be according to the following drawings for one of ordinary skill in the art
Obtain other accompanying drawings.
Fig. 1 is a schematic diagram of limits device of the present invention.
Reference：High voltage isolator BD-1；Harmonic elimination apparatus GDQ-2；Intelligent controller GDM-3；With auxiliary
The voltage transformer pt -4 of secondary winding；High-voltage and current-limitation fuse component FU-5；Can individual-phase control high-pressure vacuum contactor JZ-
6；Three phase combined over-voltage protector GDB-7.
Embodiment
The invention will be further described with the following Examples：
A kind of single-phase arc overvoltage limits device based on metallic ground principle of the present invention, including monitoring modular and limitation
Device, the monitoring modular, which includes performance evaluation unit, network selection unit and network optimization unit, the limits device, to be included
High voltage isolator BD-1, a harmonic elimination apparatus GDQ-2, intelligent controller GDM-3, the mutual induction of voltage with auxiliary secondary winding
Device PT-4, high-voltage and current-limitation fuse component FU-5, can the high-pressure vacuum contactor JZ-6 of individual-phase control and three phase combined excessively electric
Press protector GDB-7.
Preferably, monitoring modular is monitored in real time using wireless sensor network to operation of power networks, wireless sensor network
Network enters row data communication using zigbee agreement；
A, performance evaluation unit, the two-stage appraisement system analyzed Monitoring Performance is established, is established according to evaluation object
Comprehensive evaluation index, one-level evaluation object are user's perceptual performance, network aware performance and node perceived performance, user's perceptibility
Can two-level appraisement object be monitoring network life cycle, perceived accuracy and perceive time delay, the two-level appraisement of network aware performance
Object is monitoring network coverage rate, energy expenditure and transmission reliability, and the two-level appraisement object of node perceived performance is node work(
Rate control, dormancy mechanism and time synchronized；
B, network chooses unit, according to influence of the heterogeneous networks topological structure to comprehensive evaluation index, using clustered network
Topological structure；
C, network optimization unit, sensor network energy consumption is optimized, including model establishes subelement and energy optimization
Subelement；
Model establishes subelement：Monitored area is the circle that radius is r, and n sensor node is evenly distributed with region, is adopted
With fan-shaped sub-clustering heterogeneous network topology, base-station node is located at the center of circle, and leader cluster node is located at sector region center, cluster inner sensor section
Point can only communicate with leader cluster node, and leader cluster node can only be with base-station node communication, and cluster inner sensor node is sent data to
Leader cluster node processing, leader cluster node transfer data to base-station node after data are compressed with processing；
Energy optimization subelement：
The ENERGY E that distance is consumed by transmitting 1 bit data between d sensor nodeTFor：
In formula, EsThe energy consumption of transtation mission circuit or receiving circuit when being transmission or recruiting unit's bit, EfIt is free space channel
Energy needed for power amplification, E under modelmIt is energy, d needed for power amplification under multipath fading channels model0For Channel assignment threshold
Value, d0∈[80,95]；
The energy that the data that leader cluster node merges 1 bit are consumed is Ed；
It is d to base-station node distance, the data acquisition range of the cluster is if the leader cluster node CT of certain cluster, the perception radius r
Central angle is 2 θ, radius d+r, and inscribed circle radius is d-r sector region, a fan-shaped sensor in data acquisition range
Central angle corresponding to the S of node deployment region is d α, and the difference of interior outer radius is dx, then sensor node number is in this S regionSquare distance apart from leader cluster node CT is y2=x2+d2- 2xdcos α, cluster interior nodes and leader cluster node away from
From less than d0, all the sensors node is respectively transmitted b bit datas to leader cluster node CT energy consumption E in clusterinFor：
Leader cluster node CT is received, merged, the energy consumption E of transmission dataoutFor：
Cluster total energy consumption E in a data transfer where leader cluster node CTallFor：
Eall=Ein+Eout；
Transmission energy consumption is optimized using Swarm Intelligence Algorithm, optimization aim is monitoring range, monitoring node number, perceived
Radius and leader cluster node, apart from these topological parameters, understand these topological parameters to node cluster energy first to base-station node
The influence of consumption, a Parameters variation is set, ensure that other specification is constant, draw the pass between node cluster energy consumption and running parameter
System, is then iterated optimization to it using Swarm Intelligence Algorithm.
Using leader cluster node the perception radius, communication distance, data compression ratio and transmission cycle as optimization aim, network is realized
The minimality and harmony of energy consumption, avoid leader cluster node premature death, so as to extend the life cycle of network.
Preferably, the limits device rated voltage is 35kV, rated current 100A, rated frequency 50Hz.
Preferably, all parameters of the limits device have abandoned the conventional simulation with potentiometer using digitlization adjustment
Method of adjustment, improve the reliability and stability of complete machine.
Harmonic elimination apparatus GDQ-2 is loaded between the first winding of voltage transformer pt -4 neutral point and ground, Neng Goufang
Locking system resonance, eliminates resonance overvoltage, and protection voltage transformer ensures system safety operation from damage.
Preferably, the intelligent controller GDM-3 uses dual CPU, and host CPU uses 32 bit DSPs as core.
The intelligent controller GDM-3 includes communication interface RS485, CAN, can moment monitoring system state, to going out
Existing abnormal operating condition (arc grounding, metallic ground, PT broken strings etc.) makes accurate judgement, and can precise acquisition simultaneously
Power system various parameters are shown, without installing the token meter such as voltmeter, ammeter again.
Preferably, the supply voltage of the intelligent controller GDM-3 is DC220V/110V ± 10%.
The voltage transformer pt -4 has high-performance anti-saturation, and its parameter can be selected by user or design requirement
Match somebody with somebody.
The high-voltage and current-limitation fuse component FU-5 can fuse when electric current exceedes limit value, when due to plant failure,
When the reasons such as maintenance commissioning staff's wiring cause device erroneous judgement, high-voltage and current-limitation fuse component FU-5 fast fast thawings within 2ms
Disconnected, short circuit current is far from reaching maximum, will not cause any consequence, and the operation on network system does not influence.
The three phase combined over-voltage protector GDB-7 is used for overvoltage caused by limits device a variety of causes, can
Overvoltage before vacuum contactor JZ-6 is acted is limited in relatively low numerical value.
In actual application, once single-phase arc grounding occurs for network system, intelligent controller GDM-3 records event
Barrier various parameters at that time and signal an alert, at the same intelligent controller GDM-3 immediately discriminating fault types and it is separate and to
The vacuum contactor JZ-6 of failure phase sends action command, and vacuum contactor JZ-6 completes to close circle action, interval in 20ms or so
Property arc grounding be converted into metallic earthing therewith, intelligent controller GDM-3 can also start external equipment according to customer requirement.
If intelligent controller GDM-3 is set as the state of automatically replying by user, device automatically resets the time set according to user,
Make failure phase vacuum contactor by closing variation, device normal operation again.
When metallic ground occurs for network system, intelligent controller GDM-3 signal an alerts, while intelligent controller
GDM selects closure vacuum contactor JZ-6 by user's requirement or starts external equipment.If user sets intelligent controller GDM-3
It is set to the state of automatically replying, device automatically resets the time set according to user, makes failure phase vacuum contactor by closing variation,
Device normal operation again.
When PT broken strings occur for network system, intelligent controller GDM-3 sends alarm signal.
Finally it should be noted that above example is only illustrating the technical scheme of the invention, rather than to this hair
It is bright create protection domain limitation, although being explained with reference to preferred embodiment to the invention, this area it is general
It is logical it will be appreciated by the skilled person that can be modified to the technical scheme of the invention or equivalent substitution, without departing from this
The spirit and scope of innovation and creation technical scheme.
Claims (9)
1. a kind of single-phase arc overvoltage limits device based on metallic ground principle, including monitoring modular and limits device, institute
State that monitoring modular includes performance evaluation unit, network chooses unit and network optimization unit, the limits device include high pressure every
Leave and close BD, a harmonic elimination apparatus GDQ, intelligent controller GDM, the voltage transformer pt with auxiliary secondary winding, high pressure limit
Flow fuse component FU, can individual-phase control high-pressure vacuum contactor JZ and three phase combined over-voltage protector GDB；
Monitoring modular is monitored in real time using wireless sensor network to operation of power networks, and wireless sensor network uses zigbee
Agreement enters row data communication；
A, performance evaluation unit, the two-stage appraisement system analyzed Monitoring Performance is established, is established and integrated according to evaluation object
Evaluation index, one-level evaluation object are user's perceptual performance, network aware performance and node perceived performance, user's perceptual performance
Two-level appraisement object is monitoring network life cycle, perceived accuracy and perceives time delay, the two-level appraisement object of network aware performance
For monitoring network coverage rate, energy expenditure and transmission reliability, the two-level appraisement object of node perceived performance is node power control
System, dormancy mechanism and time synchronized；
B, network chooses unit, according to influence of the heterogeneous networks topological structure to comprehensive evaluation index, using clustered network topology
Structure；
C, network optimization unit, sensor network energy consumption is optimized, including model establishes subelement and energy optimization is single
Member；
Model establishes subelement：Monitored area is the circle that radius is r, n sensor node is evenly distributed with region, using fan
Shape sub-clustering heterogeneous network topology, base-station node are located at the center of circle, and leader cluster node is located at sector region center, and cluster inner sensor node is only
It can be communicated with leader cluster node, leader cluster node can only communicate with base-station node, and cluster inner sensor node sends data to leader cluster node
Processing, leader cluster node transfer data to base-station node after data are compressed with processing；
Energy optimization subelement：
The ENERGY E that distance is consumed by transmitting 1 bit data between d sensor nodeTFor：
In formula, EsThe energy consumption of transtation mission circuit or receiving circuit when being transmission or recruiting unit's bit, EfIt is free space channel model
Energy needed for lower power amplification, EmIt is energy, d needed for power amplification under multipath fading channels model0For Channel assignment threshold value, d0
∈[80,95]；
The energy that the data that leader cluster node merges 1 bit are consumed is Ed；
It is d to base-station node distance, the data acquisition range of the cluster is the center of circle if the leader cluster node CT of certain cluster, the perception radius r
Angle is 2 θ, radius d+r, and inscribed circle radius is d-r sector region, a fan-shaped sensor node in data acquisition range
Central angle corresponding to deployment region S is d α, and the difference of interior outer radius is dx, then sensor node number is in this S regionSquare distance apart from leader cluster node CT is y2=x2+d2- 2xdcos α, cluster interior nodes and leader cluster node away from
From less than d0, all the sensors node is respectively transmitted b bit datas to leader cluster node CT energy consumption E in clusterinFor：
Leader cluster node CT is received, merged, the energy consumption E of transmission dataoutFor：
Cluster total energy consumption E in a data transfer where leader cluster node CTallFor：
Eall=Ein+Eout；
Transmission energy consumption is optimized using Swarm Intelligence Algorithm, optimization aim is monitoring range, monitoring node number, the perception radius
And leader cluster node to base-station node apart from these topological parameters, understand these topological parameters first to node cluster energy consumption
Influence, set a Parameters variation, ensure that other specification is constant, draw the relation between node cluster energy consumption and running parameter, so
Optimization is iterated to it using Swarm Intelligence Algorithm afterwards.
2. a kind of single-phase arc overvoltage limits device based on metallic ground principle according to claim 1, the limit
All parameters of device processed are using digitlization adjustment.
3. a kind of single-phase arc overvoltage limits device based on metallic ground principle according to claim 1, described one
Secondary harmonic elimination apparatus GDQ is loaded between voltage transformer pt first winding neutral point and ground.
4. a kind of single-phase arc overvoltage limits device based on metallic ground principle according to claim 1, the intelligence
Energy controller GDM uses dual CPU, and host CPU uses 32 bit DSPs as core.
5. a kind of single-phase arc overvoltage limits device based on metallic ground principle according to claim 1, the intelligence
Can controller GDM include communication interface RS485, CAN, can moment monitoring system state, to the abnormal operating condition of appearance
Make accurate judgement, and precise acquisition and power system various parameters can be shown.
6. a kind of single-phase arc overvoltage limits device based on metallic ground principle according to claim 1, the intelligence
Energy controller GDM supply voltage is DC220V/110V ± 10%.
7. a kind of single-phase arc overvoltage limits device based on metallic ground principle according to claim 1, the electricity
Pressure transformer PT has high-performance anti-saturation, and its parameter can be matched by user's requirement.
8. a kind of single-phase arc overvoltage limits device based on metallic ground principle according to claim 1, the height
Press limiting fuse component FU can when electric current exceedes limit value quick fuse.
9. a kind of single-phase arc overvoltage limits device based on metallic ground principle according to claim 1, described three
Combined formula overvoltage protection device GDB is used for overvoltage caused by limits device a variety of causes.
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| CN201610822479.6A CN106208023B (en) | 2016-09-13 | 2016-09-13 | A kind of single-phase arc overvoltage limits device based on metallic ground principle |
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| CN201610822479.6A CN106208023B (en) | 2016-09-13 | 2016-09-13 | A kind of single-phase arc overvoltage limits device based on metallic ground principle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| EP4210188A1 (en) * | 2018-12-19 | 2023-07-12 | Bourns, Inc. | Protection against ac voltage conditions |
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| CN110798351B (en) * | 2019-10-30 | 2022-07-29 | 云南电网有限责任公司信息中心 | Power grid fault detection point deployment method based on PSO and ant colony-genetic algorithm |
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| WO2010149217A1 (en) * | 2009-06-26 | 2010-12-29 | Abb Technology Ag | Method for protecting transformers, and a transformer |
| CN202524078U (en) * | 2012-04-10 | 2012-11-07 | 安徽国科电力设备有限公司 | Arc suppression and overvoltage protection device controller |
| CN203192201U (en) * | 2013-02-01 | 2013-09-11 | 安徽工程大学 | Online monitoring system for high-voltage long-distance power transmission line |
| CN103401750A (en) * | 2013-07-16 | 2013-11-20 | 任炬 | Method for calculating service life of nodes and energy holes of wireless sensor network |
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| EP4210188A1 (en) * | 2018-12-19 | 2023-07-12 | Bourns, Inc. | Protection against ac voltage conditions |
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