CN108347042A - A kind of looped network cabinet intelligent accurately measures the system and its implementation for cutting off protection on the spot - Google Patents
A kind of looped network cabinet intelligent accurately measures the system and its implementation for cutting off protection on the spot Download PDFInfo
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- CN108347042A CN108347042A CN201810281852.0A CN201810281852A CN108347042A CN 108347042 A CN108347042 A CN 108347042A CN 201810281852 A CN201810281852 A CN 201810281852A CN 108347042 A CN108347042 A CN 108347042A
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- 238000012544 monitoring process Methods 0.000 claims abstract description 69
- 238000012545 processing Methods 0.000 claims abstract description 15
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- 238000004891 communication Methods 0.000 claims description 16
- 230000009471 action Effects 0.000 claims description 11
- 230000005540 biological transmission Effects 0.000 claims description 8
- 238000013480 data collection Methods 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 7
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- 238000005070 sampling Methods 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 5
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- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 230000005611 electricity Effects 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 4
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- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
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- 230000008859 change Effects 0.000 description 2
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
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- H02J13/0017—
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/20—Systems supporting electrical power generation, transmission or distribution using protection elements, arrangements or systems
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/124—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wired telecommunication networks or data transmission busses
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/126—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wireless data transmission
Abstract
The invention discloses a kind of looped network cabinet intelligents to accurately measure the system for cutting off protection on the spot, and the ring main unit includes a secondary chamber and secondary chamber；Primary indoor distribution line and switching circuit respectively install current transformer, voltage transformer additional；The monitoring data of acquisition are sent to secondary indoor controller by the current transformer and voltage transformer, and one secondary chamber monitoring sensor of the ring main unit is connected with secondary chamber by data line, and primary interior is equipped with breaker.It is an advantage of the invention that：The monitoring data of acquisition are sent to secondary indoor controller by current transformer, voltage transformer, and the data processing module of controller carries out calculating analysis to the data of acquisition, realizes for failure of different nature, targetedly handled.
Description
Technical field
The present invention relates to a kind of technical field of electrical equipment, and more specifically, it relates to a kind of looped network cabinet intelligents precisely to survey
Amount cuts off the system and its implementation of protection on the spot.
Background technology
Ring main unit（Ring Main Unit）It is one group of transmission ＆ distribution electrical equipment（High-tension switch gear）Mounted in metal or non-gold
Belong in insulation cabinet body or make the electrical equipment of assembled compartment ring network power supplying units, core is using on-load switch and melts
Disconnected device has many advantages, such as that simple in structure, small, price is low, power supply parameter can be improved and performance and power supply safety.It is wide
The general power distribution station for being used in the load centers such as Urban Residential District, skyscraper, large public building, factory and enterprise and box
In substation.
Currently, the feed line automatization system scheme for distribution mainly realizes have following several by reclosing：
Using voltage-type on-load switch, cooperation feeder line wire-outgoing breaker switchs secondary reclosing, realizes permanent fault region
Isolation.
This traditional feeder automation pattern has device configuration simple, is not necessarily to communication, isolated fault success rate
High feature, but also have the disadvantages that：Each failure can all cause feeder line outlet switch to trip；Non-faulting section can also cause
Have a power failure；Isolated fault need the multiple separating brake of feeder line outlet switch, close a floodgate cooperation, cause non-faulting region multiplicating have a power failure with
And the repeat impact to system；It is long the time required to isolated fault, need piecewise time-delay closing segmentation on-load switch；It can not achieve feedback
Line trend, the remote monitoring control for switching operating mode.
Common Power System Intelligent protected mode has two kinds of control and remote control on the spot；Control does not depend on long-range on the spot
Communication realizes identification and Fault Isolation on the spot, reliability is higher, but is difficult to uniformly manage by equipment such as fault identification, breakers
Reason, breakdown maintenance work are also comparatively laborious.Remote control realizes control station centralized management, realizes the work(such as telemetering, remote signalling, remote control
Can, fast and easy, but it is higher to communication system dependence, and stability not as good as controlling on the spot.
Through retrieval, 202435021 U of Chinese patent CN disclose a kind of distribution network feeder automation fault isolation system, lead to
It crosses and loop networks switch station is set on each node of backbone network, short circuit trouble point can directly be isolated, be not necessarily to the breaker of substation
Tripping and coincidence achieve the purpose that " zero " has a power failure, distribution network systems are made to have the self-insurance of short trouble to realize uninterrupted power supply
Shield and self-healing ability.However the system can only realize simple Fault Isolation, cannot achieve for failure of different nature, carry out
Targetedly handle；The prior art can not be monitored the execution unit in ring main unit, execution unit often occur " tripping ",
" malfunction " situation, executing order can not perform effectively, and lead to failure propagation.
Invention content
The present invention is directed to the deficiency of existing product, and provides a kind of disengagement failure circuit and ensure the normal work of other regular links
Make and collect fault data by failure carry out classification processing a kind of looped network cabinet intelligent accurately measure the system for cutting off protection on the spot
And its implementation.
A kind of looped network cabinet intelligent of the present invention accurately measures the system for cutting off protection on the spot, and the ring main unit includes a secondary chamber
And secondary chamber；Primary indoor distribution line and switching circuit respectively install current transformer, voltage transformer additional；The electric current
The monitoring data of acquisition are sent to secondary indoor controller, the monitoring of one secondary chamber of the ring main unit by mutual inductor and voltage transformer
Sensor is connected with secondary chamber by data line, primary indoor equipped with breaker, and the data processing module in controller passes through
The standard value of each phase current numerical value and setting to outlet line carries out comparison and judges whether that improper output occurs, improper defeated
Go out any one phase current of circuit and be more than established standards value, controller judges the circuit for faulty line, and by the faulty line
Information is demarcated and is stored；Controller sends instructions to the breaker on faulty line, the breaker isolation on faulty line,
Other breaker normal operations are sent instructions to by remote control or the manual failure for releasing outlet line on faulty line
Breaker closing, restore normal operation.
The current transformer, voltage transformer are connected by conducting wire with signal conditioning circuit, signal conditioning circuit and letter
The electrical connection of number sampling module, the signal sampling module connects with the SPI port of main control chip, the I/O interfaces of main control chip with
Light-coupled isolation module connection is switched, switch light-coupled isolation module control intelligent breaker, which is realized, to close a floodgate, and switchs light-coupled isolation module
By control circuit control intelligent breaker realize close a floodgate, main control chip by UART interface respectively with Ziggbee link blocks,
Ethernet link block, GPRS link blocks, RS232 interface, RS485 interfaces；Main control chip is additionally provided with data memory module
With Clock management module.
Monitoring data are used the sender of asynchronous transmission communication using RS232 interface, RS485 interfaces by the main control chip
Formula.
The primary indoor contact of breaker of ring main unit, the place that is flexible coupling, at cable connector according to there is Temperature Humidity Sensor；
The Temperature Humidity Sensor is connected by data-interface with the data-interface of main control chip, is exported using digital signal；It is described disconnected
It is connect by data by magnetic mounting base and vibrating sensor installation connection, vibrating sensor at each phase tail end connecting rod of road device
Mouth is connected with the data-interface of main control chip；Several high frequency sensings are installed on the primary indoor SF6 gas tanks inner wall of ring main unit
Device submanifold head node and a high frequency sensors integrate leader cluster node, and high frequency sensors submanifold head node is sent to signal is acquired
High frequency sensors integrate leader cluster node, the data-interface company of high frequency sensors clustered head node data interface and main control chip
Connect, high frequency sensors integrate leader cluster node and are drawn out of SF6 gas tanks by casing, discharge position for monitoring SF6 gas tanks and
Intensity.
A kind of looped network cabinet intelligent accurately measures the implementation method of excision protection system on the spot, includes the following steps：
The monitoring data of acquisition are sent to secondary indoor controller, controller by step 1, current transformer and voltage transformer
The data processing module of main control chip monitoring data are analyzed and determined；
Step 2, controller data processing module according to calculated value, send control command and give switch light-coupled isolation module, switch
Light-coupled isolation module controls intelligent breaker by control circuit and realizes combined floodgate, separating brake；
Step 3, Temperature Humidity Sensor, high frequency sensors, vibrating sensor, current transformer, voltage transformer etc. adopt data
Collection sends the data to monitoring server by communication module；
Failure is executed data and is sent to monitoring server by communication module by step 4, main control chip, and monitoring server is by data
It is transferred to monitoring data library, remote monitoring platform is connected by data line with monitoring server；Remote monitoring platform is dynamic by protection
Make information, the different type of failure, the time of failure appearance and separate, zero-sequence current and voltage, operating mechanism action or abnormal
The data such as information be collected, analysis management；
Step 5, remote monitoring platform are by tripping, alarm, electric parameter, state parameter, controller parameter, action record, channel
The information such as situation are sent to mobile management terminal by main website operational administrative module.
Controller is under the conditions of the detection sensitivity on meeting faulty line, by the instantaneous zero sequence electricity of faulty line
The zero-sequence current of stream and regular link is compared, and the greatest measure for extracting instantaneous zero sequence current is judged, judgment formula is：；It is describedFor r-th of data samples of zero-sequence current after failure, N is total degree.
The controller selects any one outlet line as line-transect, then acquires the data letter of other outlet lines respectively
Breath, calculating ratio determine whether outlet line is normal to positive negative direction, and judgment formula is：, describedFor
With reference to the R data collection value of line-transect, N is total degree,For the R data collection value on improper Y output line road；Illustrate that outlet line is normal more than zero,Illustrate that outlet line is improper less than zero.
The beneficial effects of the invention are as follows：
（1）The monitoring data of acquisition are sent to secondary indoor controller, the number of controller by current transformer, voltage transformer
Calculating analysis is carried out to the data of acquisition according to processing module, realizes for failure of different nature, is targetedly handled.
（2）Main control chip is integrated with a variety of data-interfaces, ensures that circuit breaker failure cuts off the realization of function automatically, ensures ring
Net cabinet safe and reliable operation, ensures the smooth reliable and secure transmission of information data, so that data-signal is smoothly sent
To controller.
（3）Temperature Humidity Sensor, which realizes, is monitored the temperature and humidity in ring main unit, and high frequency sensors realize SF6
Gas tank state of insulation data monitoring；Find that failure is excluded in advance.
（4）Faulty line is cut off in time by controller control switch, is realized the protection of electric system, is improved powered stable
Property；Real-time overcurrent protection, current quick and zero-sequenceprotection, timely isolated fault circuit, controller can be carried out to circuit
It is communicated with GPRS network with remote monitoring platform by optical-fibre channel, uploads real-time electric power data and fault message, carried out
Failure split fix, meanwhile, by hand-held mobile terminal closely on the spot control, realizes remote control and control on the spot
It organically combines.
Description of the drawings
Fig. 1 is the use principle figure of the present invention；
Fig. 2 is the structural schematic diagram of the controller of the present invention；
Fig. 3 is the operational flow diagram of the remote monitoring platform of the present invention；
Fig. 4 is the structural schematic diagram of the high frequency sensors of the present invention.
Specific implementation mode
The invention will be further described below in conjunction with the accompanying drawings.
As shown in Figs 1-4, a kind of looped network cabinet intelligent accurately measures the system for cutting off protection on the spot, and the ring main unit includes one
Secondary chamber and secondary chamber；Primary indoor distribution line and switching circuit respectively install current transformer, voltage transformer additional；It is described
The monitoring data of acquisition are sent to secondary indoor controller, one secondary chamber of the ring main unit by current transformer and voltage transformer
Monitoring sensor is connected with secondary chamber by data line, primary indoor equipped with breaker, the data processing module in controller
Comparison is carried out by the standard value of each phase numerical value and setting to outlet line and judges whether to occur improper output, and by the event
The information of barrier circuit is demarcated and is stored；Controller sends instructions to the breaker on faulty line, disconnected on faulty line
Road device isolation, other breaker normal operations send instructions to event by remote control or the manual failure for releasing outlet line
Hinder the breaker closing on circuit, restores normal operation.
A kind of looped network cabinet intelligent accurately measures the implementation method of excision protection system on the spot, includes the following steps：
The monitoring data of acquisition are sent to secondary indoor controller, controller by step 1, current transformer and voltage transformer
The data processing module of main control chip monitoring data are analyzed and determined；
Step 2, controller data processing module according to calculated value, send control command and give switch light-coupled isolation module, switch
Light-coupled isolation module controls intelligent breaker by control circuit and realizes combined floodgate, separating brake；
Step 3, Temperature Humidity Sensor, high frequency sensors, vibrating sensor, current transformer, voltage transformer etc. adopt data
Collection sends the data to monitoring server by communication module；
Failure is executed data and is sent to monitoring server by communication module by step 4, main control chip, and monitoring server is by data
It is transferred to monitoring data library, remote monitoring platform is connected by data line with monitoring server；Remote monitoring platform is dynamic by protection
Make information, the different type of failure, the time of failure appearance and separate, zero-sequence current and voltage, operating mechanism action or abnormal
The data such as information be collected, analysis management；
Step 5, remote monitoring platform are by tripping, alarm, electric parameter, state parameter, controller parameter, action record, channel
The information such as situation are sent to mobile management terminal by main website operational administrative module.
Data processing module failure judgement computational methods in controller are as follows：
Instantaneous zero sequence current numerical value judges that controller is under the conditions of the detection sensitivity on meeting faulty line, by faulty line
Instantaneous zero sequence current and the zero-sequence current of regular link be compared, the greatest measure for extracting instantaneous zero sequence current is sentenced
Disconnected, judgment formula is：；It is describedFor r-th of data samples of zero-sequence current after failure, N is total degree.
Positive and negative walking direction, the controller selects any one outlet line as line-transect, then distinguishes
The data information of other outlet lines is acquired, calculating ratio determines whether outlet line is normal to positive negative direction, judgment formula
For：, describedTo refer to the R data collection value of line-transect, N is total degree,For improper Y
The R data collection value of outlet line；Illustrate that outlet line is normal more than zero,Illustrate that outlet line is non-just less than zero
Often.
The current transformer, voltage transformer are connected by conducting wire with signal conditioning circuit, signal conditioning circuit and letter
The electrical connection of number sampling module, the signal sampling module connects with the SPI port of main control chip, the I/O interfaces of main control chip with
Light-coupled isolation module connection is switched, switch light-coupled isolation module control intelligent breaker, which is realized, to close a floodgate, and switchs light-coupled isolation module
By control circuit control intelligent breaker realize close a floodgate, main control chip by UART interface respectively with Ziggbee link blocks,
Ethernet link block, GPRS link blocks, RS232 interface, RS485 interfaces；Main control chip is additionally provided with data memory module
With Clock management module.Main control chip is the core component of controller, is integrated with a variety of data-interfaces, ensure that circuit breaker failure
The realization of automatic excision function, ensures ring main unit safe and reliable operation.
Monitoring data are used the sender of asynchronous transmission communication using RS232 interface, RS485 interfaces by the main control chip
Formula.In order to ensure the smooth reliable and secure transmission of information data, if RS232 interface output is broken, light modulation demodulation
Device sends data by RS485 to form a winding communication, so that data-signal is smoothly sent to controller.
The primary indoor contact of breaker of ring main unit, the place that is flexible coupling, at cable connector according to there is Temperature Humidity Sensor；
The Temperature Humidity Sensor is connected by data-interface with the data-interface of main control chip, is exported using wireless digital signal；
Pass through magnetic mounting base and vibrating sensor installation connection, vibrating sensor at each phase tail end connecting rod of the breaker
It is connected with the data-interface of main control chip by data-interface；Vibrating sensor can be according to the vibration feelings of breaker closing and separating brake
Condition is recorded, and a unique fault identification information is formed, the operating condition for monitoring analysis and record breaker；It can be with
There is the occurrence of " tripping ", " malfunction " to effective solution ring main unit control system in execution unit in the process of running, if
After breaker receives the command instruction of controller transmission, vibrating sensor monitoring breaker is not carried out order and then acts,
There is the case where " tripping ", " malfunction ", vibrating sensor will monitor that vibration information feeds back to controller, and controller passes through control
Circuit processed is enforced, the occurrence of avoiding " tripping ", " malfunction ".Vibrating sensor sends the vibration signal monitored
It gives
The contact of breaker of ring main unit, the place that is flexible coupling at cable connector are emphasis monitoring sections, due to the use of high current, high pressure
Under the conditions of, the resistance of monitoring section fluctuates, and may result in the temperature rise of monitoring section, once the temperature of monitoring section increases, does not have
There is the damage for excluding to cause breaker in time, forms poor circulation.
Several high frequency sensors submanifold head nodes and a height are installed on the primary indoor SF6 gas tanks inner wall of ring main unit
Video sensor integrates leader cluster node, and high frequency sensors submanifold head node is sent to high frequency sensors clustered cephalomere by signal is acquired
Point, high frequency sensors clustered head node data interface are connected with the data-interface of main control chip, and high frequency sensors integrate cluster head
Node is drawn by casing out of SF6 gas tanks, the discharge position for monitoring SF6 gas tanks and intensity.
SF6 gas tanks are a metal cabinets all sealed, and high frequency sensors can be improved data mounted on inside to be obtained
Take interference that is efficient and effectively avoiding outer signals.
The number of the gaseous state and cable local discharge of the SF6 gas tanks of leader cluster node acquisition is integrated by high frequency sensors
According to sending the data to main control chip data-interface, realize SF6 gas tank state of insulation data monitorings.
Shown high frequency sensors include one for receiving the super of uhf electromagnetic wave signal that looped network cabinet controller is sent out
High frequency antenna selects the Archimedes's antenna for being provided with that built-in special-shaped reflection chamber frequency is 500MHz-1.5GMHz；Hyperfrequency
Antenna and a pre-amplification circuit connection for improving ultra-high frequency antenna sensitivity, the frequency of pre-amplification circuit is
500MHz-1.5GMHz；The filter circuit connection of pre-amplification circuit and one for filtering interference signal, filter circuit and is penetrated
Frequency detecting circuit connects, and RF detection circuit is connected by locking phase amplifying circuit with Partial Discharge Detection signal.
Temperature Humidity Sensor, high frequency sensors, vibrating sensor, current transformer, voltage transformer etc. acquire data
Monitoring server is always most sent the data to by communication module afterwards, monitoring server transfers data to monitoring data library, far
Range monitoring platform is connected by data line with monitoring server；Remote monitoring platform is provided with for acquiring network failure information
Information platform, information platform are provided with faulted-phase judgment module, on the spot operation management module, main website operational administrative module.
Faulted-phase judgment module：After circuit fault protection, fault in-situ controller gathered data is simultaneously monitoring
Retain three months in database；Gathered data includes：Protection act information, time that the different type of failure, failure occur and
The information of separate, zero-sequence current and voltage, operating mechanism action or exception；Device fault information is mechanical old-fashioned mechanical
Current protection action provides action message, including the power outage time reports, and electric current secondary break phase shortage, voltage secondary break lack
Mutually report etc.；
Fault localization information provides the impedance scaled distance of measurement, for being accurately positioned, facilitating cable, insulated wire, porcelain vase and keeping away
The lookup of the hidden electrical equipment such as thunder device；Device measuring information, including high resistant zero-sequence current direction, device location coordinate, failure
Front and back digital recording is convenient for the analysis of failure cause.
Operation management module on the spot：For the manager of equipment, the APP softwares that mobile phone installation remote login authenticated are right
Cancel static password way to manage using dynamic or distant place certification in Local Controller.Authenticating operation management, communication are normal
, it is authenticated by the way of dynamic two-dimension code.It is unsmooth for communicating, pass through bluetooth（BT）, close range wireless communication
（NFC）, radio frequency identification（RFID）, dynamic password etc. cipher authentication is carried out between technologies and controller.
Protection parameters are arranged, and in-situ protection device is carried out by control panel in alternate protection, ground protection on the spot
Management realizes the manual entry of protection definite value, can also carry out remote management on the controller.
Main website operational administrative module is whole network equipment administrative center, is mainly used for completing collection, analysis and the management of data,
It is implemented as follows：
Mobile terminal is registered, and permit operation personnel and management equipment owner safeguard, after equipment state change, operator's information is looked into
It askes.
Dynamic event is released, and while tripping, alert, main website releases picture, provides ranging reference；Remote mode adjusts,
After circuit interconnection switch, institute's bus connection switch operation of standing, causes system structure to change, dynamically adjust hierarchical relationship at different levels, protect
Shield definite value cuts area；Distant place data acquisition：Specified breaker calls survey, including electric parameter, state parameter, controller parameter, action together
Record, channel case etc. realize that function is convened in a distant place.
Faulty line is cut off in time by controller control switch, is realized the protection of electric system, is improved electrical stability.
It can carry out circuit real-time overcurrent protection, current quick and zero-sequenceprotection, timely isolated fault circuit, and controller leads to
It crosses optical-fibre channel to be communicated with GPRS network with remote monitoring platform, uploads real-time electric power data and fault message, carry out event
Hinder split fix, meanwhile, by hand-held mobile terminal closely control on the spot, realizes remote control and what is controlled on the spot have
Machine combines.Both there is complete fault identification on the spot, positioning, excision and overlapped skilful defencive function, ensured that Operation of Electric Systems is steady
It is fixed, and can realize that electric power data transmission and manual command are changed, and are monitored and are managed convenient for control centre by telecommunication.
Example the above is only the implementation of the present invention is not intended to limit the scope of the invention, every to utilize this hair
Equivalent structure or equivalent flow shift made by bright description is applied directly or indirectly in other relevant technology necks
Domain is included within the scope of the present invention.
Claims (7)
1. a kind of looped network cabinet intelligent accurately measures the system for cutting off protection on the spot, ring main unit includes a secondary chamber and secondary chamber；Once
Indoor distribution line and switching circuit respectively install current transformer, voltage transformer additional；It is characterized in that the Current Mutual Inductance
The monitoring data of acquisition are sent to secondary indoor controller, one secondary chamber of ring main unit monitoring sensing by device and voltage transformer
Device is connected with secondary chamber by data line, primary indoor equipped with breaker, and the data processing module in controller passes through to defeated
The standard value of each phase numerical value and setting that go out circuit carries out comparison and judges whether that improper output occurs, and judges the circuit for failure
Circuit, and the information of the faulty line is demarcated and stored；Controller sends instructions to the breaker on faulty line, therefore
Hinder circuit on breaker isolation, other breaker normal operations, by remote control or manually release outlet line failure,
The breaker closing on faulty line is sent instructions to, normal operation is restored, vibration signal monitoring is installed on the breaker
System, the vibration signal monitoring system are used to analyze and determine the execution action command of breaker.
2. a kind of looped network cabinet intelligent according to claim 1 accurately measures the system for cutting off protection on the spot, characterized in that electricity
Current transformer is connected by conducting wire with signal conditioning circuit with voltage transformer, signal conditioning circuit and signal sampling module electricity
Connection, the signal sampling module are connected with the SPI port of main control chip, the I/O interfaces of main control chip and switch light-coupled isolation
Module connects, and switch light-coupled isolation module control intelligent breaker, which is realized, to close a floodgate, and switch light-coupled isolation module passes through control circuit
It controls intelligent breaker and realizes that combined floodgate, main control chip connect mould with Ziggbee link blocks, Ethernet respectively by UART interface
Block, GPRS link blocks, RS232 interface, RS485 interfaces；Main control chip is additionally provided with data memory module and Clock management mould
Block.
3. a kind of looped network cabinet intelligent according to claim 1 accurately measures the system for cutting off protection on the spot, characterized in that ring
The primary indoor contact of breaker of net cabinet, the place that is flexible coupling, at cable connector according to there is Temperature Humidity Sensor；The humiture
Sensor is connected by data-interface with the data-interface of main control chip, is exported using digital signal；The breaker it is each
Data-interface and master control core are passed through by magnetic mounting base and vibrating sensor installation connection, vibrating sensor at phase tail end connecting rod
The data-interface of piece connects；Several high frequency sensors submanifold cephalomeres are installed on the primary indoor SF6 gas tanks inner wall of ring main unit
Point and a high frequency sensors integrate leader cluster node, and high frequency sensors submanifold head node is sent to high frequency sensors by signal is acquired
Integrated leader cluster node, high frequency sensors clustered head node data interface are connected with the data-interface of main control chip, high frequency sensing
Device integrates leader cluster node and is drawn out of SF6 gas tanks by casing, the discharge position for monitoring SF6 gas tanks and intensity.
4. a kind of looped network cabinet intelligent accurately measures the implementation method for cutting off protection system on the spot, it is characterized in that including the following steps：
The monitoring data of acquisition are sent to secondary indoor controller, controller by step 1, current transformer and voltage transformer
The data processing module of main control chip monitoring data are analyzed and determined；
Step 2, controller data processing module according to calculated value, send control command and give switch light-coupled isolation module, switch
Light-coupled isolation module controls intelligent breaker by control circuit and realizes combined floodgate, separating brake；
Step 3, Temperature Humidity Sensor, high frequency sensors, vibrating sensor, current transformer, voltage transformer etc. adopt data
Collection sends the data to monitoring server by communication module；
Failure is executed data and is sent to monitoring server by communication module by step 4, main control chip, and monitoring server is by data
It is transferred to monitoring data library, remote monitoring platform is connected by data line with monitoring server；Remote monitoring platform is dynamic by protection
Make information, the different type of failure, the time of failure appearance and separate, zero-sequence current and voltage, operating mechanism action or abnormal
The data such as information be collected, analysis management；
Step 5, remote monitoring platform are by tripping, alarm, electric parameter, state parameter, controller parameter, action record, channel
The information such as situation are sent to mobile management terminal by main website operational administrative module.
5. a kind of looped network cabinet intelligent according to claim 4 accurately measures the implementation method for cutting off protection system on the spot,
It is characterized in, data processing module analyzes and determines monitoring data in step 1, detection of the controller on meeting faulty line
Under the conditions of sensitivity, instantaneous zero sequence current numerical value judges, by the zero sequence of the instantaneous zero sequence current of faulty line and regular link electricity
Stream is compared, and the greatest measure for extracting instantaneous zero sequence current is judged, judgment formula is：；It is described
For r-th of data samples of zero-sequence current after failure, N is total degree.
6. a kind of looped network cabinet intelligent according to claim 4 accurately measures the implementation method for cutting off protection system on the spot,
It is characterized in, data processing module analyzes and determines monitoring data in step 1, positive and negative walking direction, the controller selection
Any one outlet line is as line-transect, then acquires the data information of other outlet lines respectively, and calculating ratio carrys out positive negative direction
Determine whether outlet line is normal, judgment formula is：, describedFor with reference to the R data acquisition of line-transect
Value, N is total degree,For the R data collection value on improper Y output line road；Illustrate outlet line just more than zero
Often,Illustrate that outlet line is improper less than zero.
7. a kind of looped network cabinet intelligent according to claim 4 accurately measures the implementation method for cutting off protection system on the spot,
It is characterized in, monitoring data are used the sender of asynchronous transmission communication using RS232 interface, RS485 interfaces by the main control chip
Formula.
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| CN114325151A (en) * | 2021-11-12 | 2022-04-12 | 国网浙江省电力有限公司平湖市供电公司 | Ring main unit fault acquisition method |
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