CN108152656A - One kind is based on one or two fusion type Fault Isolation intelligent measuring and control devices - Google Patents
One kind is based on one or two fusion type Fault Isolation intelligent measuring and control devices Download PDFInfo
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- CN108152656A CN108152656A CN201810073948.8A CN201810073948A CN108152656A CN 108152656 A CN108152656 A CN 108152656A CN 201810073948 A CN201810073948 A CN 201810073948A CN 108152656 A CN108152656 A CN 108152656A
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- 238000002955 isolation Methods 0.000 title claims abstract description 18
- 230000004927 fusion Effects 0.000 title claims abstract description 13
- 238000012545 processing Methods 0.000 claims abstract description 23
- 230000004224 protection Effects 0.000 claims abstract description 17
- 238000004891 communication Methods 0.000 claims abstract description 10
- 230000011664 signaling Effects 0.000 claims abstract description 6
- 238000001514 detection method Methods 0.000 claims abstract description 5
- 238000004804 winding Methods 0.000 claims abstract description 4
- 230000005611 electricity Effects 0.000 claims description 17
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
Abstract
The present invention relates to one kind to be based on one or two fusion type Fault Isolation intelligent measuring and control devices, including breaker body, breaker body is arranged on circuit breaker base, double winding CT is provided on breaker body, circuit breaker base is provided with extended end, condenser type PT is provided on extended end top, chassis interior is provided with signal processing unit, and signal processing unit is circumscribed with front-end acquisition device by the signaling interface set on circuit breaker base.The present invention utilizes electronic technology, mechanics of communication, computer and network technology; real-time monitoring is carried out to distribution line; detection distribution circuit single-phase earth fault, phase fault, overload, three-phase imbalance, load current, on off state and related operation data in real time; it realizes monitoring, protection, the control of distribution line, shortens distribution line failure and search the time.
Description
Technical field
The present invention relates to electronics and power technique fields more particularly to one kind based on one or two fusion type Fault Isolations intelligence
Measure and control device.
Background technology
With the development of social economy and the continuous progress of human civilization, electric power has become human lives, work, study
In the indispensable energy.The field of the application of electric power energy is constantly widened and is goed deep into, therefore, the stability and safety of electric power
Property become one development key.
Important component of the distribution line as entire distribution network system, is easy for causing once circuit goes wrong
The failure of entire electric system or paralysis, and then the normal life electricity consumption of resident is influenced, hinder economic shape up.Distribution wire
Basic link of the road as electric system is the core of whole system, with the continuous development of China's economic technology, power grid
Application range it is also more and more extensive, distribution line covering enclose it is also increasing, from the current application feelings of China's distribution line
From the point of view of condition, be mainly shown as the characteristics of circuit is long, covering is wide, range spans are big, Just because of this, the stability of wiring line compared with
It is weak；Once breaking down, it is the thing spent human and material resources very much that investigation, which is got up, it is therefore desirable to a kind of prison for realizing distribution line
It surveys, protection, control, shorten the device that distribution line failure searches the time.
Invention content
The purpose of the invention is to overcome the deficiencies in the prior art, obtain a kind of based on one or two fusion type Fault Isolations
Intelligent measuring and control device using electronic technology, mechanics of communication, computer and network technology, carries out distribution line in monitoring prison in real time
Control detects distribution circuit single-phase earth fault, phase fault, overload, three-phase imbalance, load current, switch in real time
State and related operation data, realize the monitoring, protection, control of distribution line, shorten distribution line failure and search the time.
The present invention is to be achieved through the following technical solutions：
One kind is based on one or two fusion type Fault Isolation intelligent measuring and control devices, and including breaker body, breaker body is set
It puts on circuit breaker base, double winding CT is provided on breaker body, circuit breaker base is provided with extended end, extended end top
On be provided with condenser type PT, chassis interior is provided with signal processing unit, and signal processing unit on circuit breaker base by setting
Signaling interface be circumscribed with front-end acquisition device.
More preferably, electricity getting device is further included, the electricity getting device takes energy capacitance by high pressure and takes energy transformer by circuit
High pressure is converted to the alternating voltage of Circuit Fault on Secondary Transformer stabilization, powers to front-end acquisition device, and high pressure takes energy capacitance to use poly- third
Alkene metallization film capacitor；Protection module is additionally provided on electricity getting device, protection takes energy transformer not rushed by distribution line thunder and lightning
It hits and damages.
More preferably, the breaker body uses three-phase column support type full-closed structure, and three-phase pillar is inside and outside primary
Line terminals set full skirt.
More preferably, the signal processing unit includes voltage transformer and current transformer, and the current transformer uses
Primary current signal is converted into the small electricity proportional to primary side current and phase by signal processing circuit by low-power consumption coil
Press signal；Primary voltage is converted into proportional to primary voltage and phase small by the voltage transformer using resitstance voltage divider
Voltage signal.
More preferably, the signal processing unit includes electronic integrated formula mutual inductor, is wrapped in the electronic integrated formula mutual inductor
Low-power consumption coil is included, primary current signal is converted by signal processing circuit proportional to primary side current and phase small
Voltage signal further includes resitstance voltage divider, and primary voltage can be converted into the small voltage letter proportional to primary voltage and phase
Number.
More preferably, the front-end acquisition device includes main control unit, communication unit, backup power supply three parts；Master control
Unit is by signal acquisition circuit, power circuit, control circuit, telecommunication circuit A/D convertor circuit and singlechip group into for completing
Ac signal acquisition measures the parameters such as feeder line phase voltage, electric current, power, and detection data is uploaded to backstage by public network GPRS
Software management system grasps circuit operating status, the division of remote control switch in real time.
Compared with prior art, the present invention has following usefulness：
(1) breaker body, taking energy unit, measuring unit and front-end acquisition device are carried out integrated be based on by the present invention
One or two Combined designs are realized collection protection, control, are measured, remote control four-in-one, front-end acquisition device micro energy lose, Miniaturization Design,
Collected data are sent to backstage main station system by GPRS modes, " three is distant " function, open circuit are realized by backstage main website
Device has installed disconnecting switch additional, forms the combined electrical apparatus that based on one two time merges of the vacuum circuit breaker with disconnecting switch, increases
It can be seen that isolation cut-off point, and with reliable chain operation, improve reliability and security performance；
(2) all secondary connections of the present invention complete in factory, reduce the risk of site operation wiring error.Scene only needs one
Construction can be completed in secondary lifting breaker, and short construction period reduces power off time；
(3) outlet of all high-tension current inductors of the present invention all have passed through the conversion of two-level current mutual inductor in pedestal
Processing.It when front-end acquisition device is not installed, is not required to consider the risk of high-tension current inductor open circuit, reduces site operation and accidentally grasp
Make accident；
(4) present invention supervises distribution line using electronic technology, mechanics of communication, computer and network technology in real time
Survey monitoring, in real time detect distribution circuit single-phase earth fault, phase fault, overload, three-phase imbalance, load current,
On off state and related operation data, realize the monitoring, protection, control of distribution line, when shortening distribution line failure lookup
Between；
(5) present invention is mainly used for 10kV distribution network overhead lines, be have cut-off line current, telemetering, remote signalling, remote control,
Fault detect and the automation equipment for being isolated, protecting the functions such as definite value adjustment.By condenser type PT, signal processing unit, breaker
Ontology and front-end acquisition device (also referred to as intelligent controller) composition, installation is simple, easy to maintain, is distribution line feeder automation
System preferred unit.
Description of the drawings
Fig. 1 is the structure diagram of the embodiment of the present invention；
Fig. 2 is the structuring concept figure of the embodiment of the present invention；
Fig. 3 is the fundamental diagram of the embodiment of the present invention；
Fig. 4 is the current transformer schematic diagram of the embodiment of the present invention；
Fig. 5 is the voltage transformer schematic diagram of the embodiment of the present invention；
Fig. 6 is the electricity getting device schematic diagram of the embodiment of the present invention；
Fig. 7 is the front-end acquisition device schematic diagram of the embodiment of the present invention.
Specific embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to the accompanying drawings and embodiments, it is right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
As shown in Figure 1 and Figure 2, include breaker body 1 based on one or two fusion fault isolation devices, breaker body is set
It puts on circuit breaker base, double winding CT5 is provided on breaker body 1, circuit breaker base is provided with extended end, extended end top
Condenser type PT2 is provided on end, chassis interior is provided with signal processing unit 4, and signal processing unit 4 is by circuit breaker base
The signaling interface 3 of setting is circumscribed with front-end acquisition device 6；Wherein, condenser type PT2 provides working power for device；Signal processing
Signal is converted to secondary singal by unit 4；Breaker body 1 uses ZW32 sealing type overhead transmission line vacuum circuit breakers, preceding
End harvester 6 has remote signalling, telemetering, distant control function, using GPRS communication modes；By installing capacitance additional on circuit breaker base
Formula PT2 makes breaker be based on one or two Combined designs with condenser type PT2.Condenser type PT2 is not changed shadow by weather, load current
It rings, it is reliable and stable；Device takes electricity using line voltage distribution, if circuit charge, no matter load current how much, how severe weather is,
Reliably working power supply can be provided for device.Breaker uses three-phase column support type full-closed structure, and good seal performance is moisture-proof, anti-
Condensation, suitable for severe cold or hot humid area.The inside and outside line terminals of three-phase pillar increase full skirt, make creepage distance
It greatly increases, meets regional requirement below 2000 meters of height above sea level.
The principle of the present embodiment is：Electricity is taken by energy taking device 9, working power (alternating voltage) is provided by condenser type PT2,
Current transformer acquires current signal and presses conversion through overcurrent, and voltage transformer collection voltages signal passes through partial pressure switch, 6 road signals
By signal processing unit convert out electric current, voltage, zero-sequence current, residual voltage secondary singal (Ia Ib Ic Io Ua Ub
Uc Uo) and with breaker control signal (separating brake, combined floodgate, energy storage) together pass through high shielded cable connection input front end acquire
Signal is reached system background by device, front-end acquisition device after signal filtering process, by communication module.As circuit occurs
Failure, front-end acquisition device can control breaker open operation according to predetermined control strategy, and isolated fault can also pass through front-end collection
Device receives Background control instruction and breaker is remotely controlled, and if Fig. 3,7 and 8 is respectively limit switch and auxiliary switch, 10 are
Energy storage motor.
In the present embodiment, the signal processing unit includes voltage transformer and current transformer, colleeting comb voltage measurement
With protection signal output of one, small voltage signal is directly exported, system structure is simplified, reduces error source；Voltage output
Overcurrent will not be generated when holding second short circuit, ferromagnetic resonance will not be generated, eradicated the significant trouble in Operation of Electric Systems
Hidden danger has ensured the safety of personnel and equipment；Current transformer principle such as Fig. 4, by low-power consumption coil 11, primary current is believed
Number the small voltage signal proportional to primary side current and phase is converted by signal processing circuit, parameter is as follows：Three phase transformations
Than：Load 600A/1V, zero sequence 20A/0.2A；Voltage transformer principle such as Fig. 5, by divider by primary voltage be converted into
Primary voltage and the proportional small voltage signal of phase.
Unlike the embodiments above as another preferred embodiment, what the signal processing unit included is
Collecting voltage mutual inductor and current transformer function realize work(same as the previously described embodiments in the electronic integrated formula mutual inductor of one
Can, assembling is more simple.
Electricity getting device 9, electricity getting device unit principle such as Fig. 6 are further included in the present embodiment；Take electricity that PT need not be installed, using height
Voltage capacitance (condenser type PT) C1 provide system power supply AC+ AC- and measured for single-phase voltage；High pressure takes energy capacitance C1 using poly-
Propylene metallization film capacitor, pressure-resistant 42kV/min, have loss factor is low, insulation resistance is high, capacitance and loss factor with
Temperature and the stability of frequency comparison it is high and can self-healing the advantages that；Protection module R, which is mainly protected, takes energy transformer not by with cable
Road lightning impulse etc. is interfered and is damaged.Energy capacitance C1 is taken by high pressure and takes energy transformer L1, circuit high pressure is converted into transformation
The alternating voltage that device secondary side is stablized is powered to front-end acquisition device.
Front-end acquisition device is mainly made of main control unit, communication unit, backup power supply three parts, carries out exchange letter
Number acquisition, measures the parameters such as feeder line phase voltage, electric current, power, detection data is uploaded to daemon software pipe by public network GPRS
Reason system grasps circuit operating status, the division of remote control switch, when generation single-phase earthing or phase fault in real time
When, it can be by fault section isolation or excision；Fundamental diagram such as Fig. 7.Front-end acquisition device can provide 1 loop line road (4 voltage, 4 electricity
Stream, wherein 3 measure voltages, 3 measure electric current, 1 zero-sequence current, 1 residual voltage) analog quantity, 1 intake adopt
Collection, 3 output control.Reserved GPS positioning, serial communication, 3 tunnel intake acquisitions, electronic mutual inductor acquisition in addition also can root
Configuration is adjusted according to the demand of user.
Front-end acquisition device includes following functions：
(1) telemetry function
Signal measurement --- three-phase current, three-phase voltage, residual voltage, zero-sequence current, switch divide-shut brake can be measured in real time
State, energy storing of switch state etc., and core information timing active upload to daemon software.
Power measurement --- each phase active power, reactive power, apparent energy, power factor are can measure, and master calls upload together
To daemon software.
Fault current measures --- when phase fault occurs, fault current is actively measured, together with other fault messages
Active upload is to daemon software together.
Backup battery voltage measurement --- backup power supply battery tension can be detected in real time, be uploaded to daemon software.
(2) remote signaling function
Including the displacement of switch opening and closing state, the displacement of energy storing of switch state, backup battery is under-voltage, backup battery voltage
Restore regular prompt, short trouble, singlephase earth fault to disappear prompting, the alarms such as circuit dead electricity, circuit incoming call prompting, in active
It is transmitted to daemon software.
(3) distant control function
Remotely (GPRS) integral intelligent switch can be controlled to carry out breaking-closing operating；
Remote control integral intelligent needs to carry out password authentification when switching, and enhances switch control security；
The operation password of remote control integral intelligent switch can change and modification authority is controlled.
(4) data-transformation facility
GPRS communications can be carried out with daemon software, send signal acquisition information and receive the lives such as switch control, parameter modification
It enables；When can receive daemon software clock school；Can take it is long-range two ways on the spot, carry out the setting and reading of relevant parameter；Match
During net line failure, can active upload fault message to daemon software.
(5) fault identification, isolation and defencive function
Phase fault judges --- divide I sections of protections, II sections of protections and III section of protection, when phase fault occurs for circuit,
It actively measures and the information such as reporting fault electric current, the separate, time of failure of failure is to daemon software；
Earth fault differentiate --- circuit occur singlephase earth fault when, monitor fault current voltage, and by residual voltage,
The active reportings such as electric current, time of failure are to daemon software；
The fault message and switch trip that Fault Isolation --- daemon software is reported according to front-end acquisition device each on circuit
Information, according to distribution topologies model, carries out fault section detection, then carries out Fault Isolation, protection.
(6) fault information reporting, store function
Device is in line failure, by fault message active reporting to daemon software, and is stored in device EEPROM
In, daemon software is facilitated to read at any time as needed；Nearest 256 fault messages, i.e., first event can be preserved in chronological order
Barrier information is newest failure；Fault protection parameter can be configured according to actual track operating condition by daemon software.
(7) self-recovering function
With program self-recovering function, when operating status is abnormal, and program is absorbed in endless loop state, front-end acquisition device
It can restart, restore normal operating condition；Have program self-diagnostic function, certificate parameter setting correctness.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement made within refreshing and principle etc., should all be included in the protection scope of the present invention.
Claims (6)
1. one kind is based on one or two fusion type Fault Isolation intelligent measuring and control devices, which is characterized in that including breaker body, open circuit
Device ontology is arranged on circuit breaker base, and double winding CT is provided on breaker body, and circuit breaker base is provided with extended end, prolongs
Condenser type PT is provided on long end top, chassis interior is provided with signal processing unit, and signal processing unit passes through breaker bottom
The signaling interface set on seat is circumscribed with front-end acquisition device.
It is 2. as described in claim 1 a kind of based on one or two fusion type Fault Isolation intelligent measuring and control devices, which is characterized in that also
Including electricity getting device, the electricity getting device takes energy capacitance by high pressure and takes energy transformer that circuit high pressure is converted to transformer two
The alternating voltage that secondary side is stablized is powered to front-end acquisition device, and high pressure takes energy capacitance to use polypropylene metallization film capacitor；It takes
Protection module is additionally provided on electric installation, protection takes energy transformer not damaged by distribution line lightning impulse.
It is 3. as described in claim 1 a kind of based on one or two fusion type Fault Isolation intelligent measuring and control devices, which is characterized in that institute
Breaker body is stated using three-phase column support type full-closed structure, the inside and outside line terminals setting full skirt of three-phase pillar.
It is 4. as described in claim 1 a kind of based on one or two fusion type Fault Isolation intelligent measuring and control devices, which is characterized in that institute
It states signal processing unit and includes voltage transformer and current transformer, the current transformer uses low-power consumption coil, will be primary
Current signal is converted into the small voltage signal proportional to primary side current and phase by signal processing circuit；The voltage is mutual
Primary voltage is converted into the small voltage signal proportional to primary voltage and phase by sensor using resitstance voltage divider.
It is 5. as described in claim 1 a kind of based on one or two fusion type Fault Isolation intelligent measuring and control devices, which is characterized in that institute
It states signal processing unit and includes electronic integrated formula mutual inductor, include low-power consumption coil in the electronic integrated formula mutual inductor, by one
Primary current signal is converted into the small voltage signal proportional to primary side current and phase by signal processing circuit, further includes electricity
Divider is hindered, primary voltage can be converted into the small voltage signal proportional to primary voltage and phase.
It is 6. as described in claim 1 a kind of based on one or two fusion type Fault Isolation intelligent measuring and control devices, which is characterized in that institute
It states front-end acquisition device and includes main control unit, communication unit, backup power supply three parts；Main control unit is by signal acquisition electricity
Road, power circuit, control circuit, telecommunication circuit A/D convertor circuit and singlechip group into, for completing ac signal acquisition, measure
Detection data is uploaded to daemon software by public network GPRS and manages system, in real time by the parameters such as feeder line phase voltage, electric current, power
Grasp circuit operating status, the division of remote control switch.
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| CN201810073948.8A CN108152656A (en) | 2018-01-25 | 2018-01-25 | One kind is based on one or two fusion type Fault Isolation intelligent measuring and control devices |
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| CN201810073948.8A CN108152656A (en) | 2018-01-25 | 2018-01-25 | One kind is based on one or two fusion type Fault Isolation intelligent measuring and control devices |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109188057A (en) * | 2018-11-02 | 2019-01-11 | 中国矿业大学(北京) | A kind of phase sequence zero sequence integration voltage sensor |
| CN109507459A (en) * | 2018-11-27 | 2019-03-22 | 国网江苏省电力有限公司电力科学研究院 | Standard electric signal creating method, device and accuracy checking method of one or two fusion switchgears and system |
| CN109884454A (en) * | 2019-03-27 | 2019-06-14 | 国网电力科学研究院武汉南瑞有限责任公司 | The intelligent pole-mounted circuit breaker of one or two fusions of one kind and cable monitoring system |
| CN110244110A (en) * | 2019-07-10 | 2019-09-17 | 无锡应达工业有限公司 | A kind of voltage sensor control module that more ratios are adjusted |
| CN110853989A (en) * | 2019-11-12 | 2020-02-28 | 国网新疆电力有限公司经济技术研究院 | 10kV three-phase synthetic voltage and current integrated sensor self-energy-taking circuit breaker |
| CN111526330A (en) * | 2020-04-17 | 2020-08-11 | 广东电网有限责任公司 | Transformer substation equipment state intelligent recognition system based on machine vision |
| CN111697701A (en) * | 2020-06-17 | 2020-09-22 | 珠海博威智能电网有限公司 | Protection control circuit with acquisition function and protection control switch thereof |
| CN111812498A (en) * | 2020-07-04 | 2020-10-23 | 华翔翔能科技股份有限公司 | Intelligent fault isolation measurement and control device based on primary and secondary fusion |
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