CN108736456A - Power distribution network protective relaying device - Google Patents
Power distribution network protective relaying device Download PDFInfo
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- CN108736456A CN108736456A CN201810791083.9A CN201810791083A CN108736456A CN 108736456 A CN108736456 A CN 108736456A CN 201810791083 A CN201810791083 A CN 201810791083A CN 108736456 A CN108736456 A CN 108736456A
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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
- H02H7/261—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 involving signal transmission between at least two stations
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H1/00—Details of emergency protective circuit arrangements
- H02H1/0007—Details of emergency protective circuit arrangements concerning the detecting means
- H02H1/0015—Using arc detectors
- H02H1/0023—Using arc detectors sensing non electrical parameters, e.g. by optical, pneumatic, thermal or sonic sensors
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- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The present invention relates to power distribution protection technical fields, and disclose power distribution network protective relaying device, including central processing unit, abnormal signal acquisition module, 4G transmission modules, signal processing module, protect execution module and alarm module, the input terminal of the central processing unit output end with abnormal signal acquisition module respectively, the output end of signal processing module and the output end electrical connection of protection execution module, the output end of the central processing unit input terminal with abnormal signal acquisition module respectively, the input terminal of signal processing module, protect the input terminal electrical connection of the input terminal and alarm module of execution module, the output end of abnormal signal acquisition module is connect with the input end signal of 4G transmission modules.The power distribution network protective relaying device; by the way that abnormal signal acquisition module, signal processing module and protection execution module is arranged, protective relaying device is divided into three parts, carries out independent operating, mutually control respectively; so that protective relaying device is clear in structure reasonable, convenient for overall management.
Description
Technical field
The present invention relates to power distribution protection technical field, specially a kind of power distribution network protective relaying device.
Background technology
When in electric system force device or electric system itself failure have occurred jeopardize safe operation of power system when,
It can in time send warning signal to operator, or directly send out trip signal to the breaker controlled to terminate
A kind of automation measure of these events development and equipment, realize the complete set of equipments of this automation measure, be generally commonly referred to as after
Electrical protective device.Protective relaying device is mainly electrical quantity when short circuit or abnormal conditions occurring using element in electric system
（Electric current, voltage, power, frequency etc.）Variation constitute relay protection action principle.
Relay is a kind of automatic switch electric control device with isolation features, works as input quantity（Energizing quantity）Variation reach
When to prescribed requirement, make controlled volume that a kind of electric appliance of scheduled Spline smoothing occur in electrical output circuit, it has control
System（Also known as input circuit）With by control system（Also known as output loop）Between interactive relationship, play automatic tune in circuit
The effects that section, safeguard protection, conversion circuit.
In the prior art, power distribution network protective relaying device is failure emergent treatment system, refers to going out in Distribution Network Equipment
After existing failure, start emergency guarantee measure, corresponding failure circuitry cuts are isolated, thus it requires protective relaying device meets reliably
The requirement of property, selectivity, sensitivity and quick-action, but not faulty early warning system, can not predict the generation of failure, and distribution
For net when carrying out structure isolation with network recovery power supply to faulty section power grid, for the more demanding of network communication, multicompartment is short
Time centralized processing easily causes network congestion phenomenon.
Invention content
（One）The technical issues of solution
In view of the deficiencies of the prior art, the present invention provides a kind of power distribution network protective relaying devices, have fault pre-alarming mechanism, knot
The advantages that structure optimization is rationally, network configuration is reasonable, solves the not faulty early warning system of traditional relay protection device, can not predict
The generation of failure, and power distribution network to faulty section power grid carry out structure isolation with network recovery power when, for network communication
More demanding, the multicompartment short time focuses on the problem of easily causing network congestion phenomenon.
（Two）Technical solution
To realize that above-mentioned fault pre-alarming mechanism, structure optimization are reasonable and the rational purpose of network configuration, the present invention provide following skill
Art scheme：A kind of power distribution network protective relaying device, including central processing unit, abnormal signal acquisition module, 4G transmission modules, signal
Processing module, protection execution module and alarm module, the input terminal of the central processing unit respectively with abnormal signal acquisition module
Output end, signal processing module output end and protect execution module output end electrical connection, the central processing unit it is defeated
Outlet respectively with the input terminal of abnormal signal acquisition module, signal processing module input terminal, protect execution module input terminal
It is electrically connected with the input terminal of alarm module, the input end signal of the output end and 4G transmission modules of the abnormal signal acquisition module
Connection, the output end of the 4G transmission modules and the input end signal of signal processing module connect, the signal processing module
Output end is connect with the input end signal of another 4G transmission module, and the output end of another 4G transmission module is held with protection
The input end signal of row module connects, and the 4G transmission modules use ME3760 type network 4G modules.
Preferably, the abnormal signal acquisition module includes signal processor, current transformer, voltage transformer, vibration
Sensor, generator, transformer and busbar end, the input terminal and output end of the signal processor respectively with central processing unit
Output end and input terminal are electrically connected, and the output end of the signal processor is connect with the input end signal of 4G transmission modules, institute
The input terminal for stating signal processor is electrically connected with the output end of current transformer, voltage transformer and vibrating sensor respectively,
The current transformer and voltage transformer are connected respectively and parallel connection accesses generator, transformer and busbar end institute in circuit,
The Sensor section of the vibrating sensor is fixedly connected with the outer wall of generator and transformer respectively, the vibrating sensor
The output end of controller part and the input terminal of signal processor are electrically connected.
Preferably, the signal processing module include signal processing PLC controller I, electric current relay, voltage relay,
Control unit and frequency relay, the input terminal and output end of the signal processing PLC controller I respectively with central processing unit
Output end and input terminal are electrically connected, and the input terminal and output end of the signal processing PLC controller I are defeated with 4G transmission modules
Outlet is connected with input end signal, the input terminal of the signal processing PLC controller I respectively with electric current relay, voltage relay
Device and the output end of control unit are electrically connected, the output end of the signal processing PLC controller I respectively with electric current relay,
Voltage relay and the input terminal of control unit are electrically connected, the input terminal and output end point of the signal processing PLC controller I
It is not electrically connected with the output end of control unit and input terminal, the output end of described control unit and the input terminal of frequency relay
It is electrically connected.
Preferably, the algorithmic formula of described control unit is determined by following formula：
a≤θ=ABS（（H1-H2）/H2）≥b
Wherein a indicates that frequency departure lower limit, b indicate that the frequency departure upper limit, θ indicate current device deviation ratio, H1Expression is currently set
Standby vibration frequency, H2Indicate frequency when equipment normal operation, ABS expressions take absolute value to operation result, specifically, H1Table
Show the real-time detected value of frequency transmitted by the vibrating sensor installed on generator or transformer.
Preferably, the protection execution module includes signal processing PLC controller II, LED lamp tube and optical signal relay,
The input terminal and output end of the signal processing PLC controller II electrically connect with the output end of central processing unit and input terminal respectively
It connects, the input terminal of the signal processing PLC controller II is connect with the output end signal of 4G transmission modules, the signal processing
The output end of PLC controller II is electrically connected with the input terminal of LED lamp tube and optical signal relay respectively.
Preferably, the alarm module includes flashing lamp and buzzer, the input terminal of the flashing lamp and buzzer with
The output end of central processing unit is electrically connected.
A kind of operating method of power distribution network protective relaying device, comprises the steps of：
S1, the electric current and voltage of generator, transformer and busbar end are adopted respectively by current transformer and voltage transformer
Collect and the data of acquisition are sent to signal processor, then by vibrating sensor to the real-time vibration frequency of generator and transformer
It is detected and the data of acquisition is sent to signal processor；
S2, after the data processing of collection is compressed by signal processor, on the one hand by data feedback to central processing unit, another party
Face is transferred to signal processing PLC controller I by 4G transmission modules, and signal processing PLC controller I passes through the data-signal received
Correspondence is sent to electric current relay and voltage relay respectively after decompression processing, and signal processing PLC controller I, which receives, carrys out self-vibration
The frequency data of dynamic sensor after control unit algorithm process via feeding back to signal processing PLC controller I, then by signal processing
Handling result is sent to frequency relay by PLC controller I, by electric current relay, voltage relay and frequency relay itself
Judge that laggard action is made, while actuating signal is fed back into signal processing PLC controller I, then by signal processing PLC controller I
It is respectively transmitted to central processing unit and signal processing PLC controller II；
S3, by signal processing PLC controller II to transmit Lai signal carry out decompression processing with identification after, control LED lamp tube point
It is bright, then so that optical signal relay is acted by the optical signal of LED lamp tube, while order is fed back into central processing unit；
S4, by central processing unit signal processor, signal processing PLC controller I and signal processing PLC controller II are transmitted
Feedback information carries out integrated treatment, controls flashing lamp and buzzer and is connected and flickers and sounding.
Preferably, D7F-S01-10 type vibrating sensings are respectively adopted in vibrating sensor and frequency relay in the step S2
Device and BCZ-1A type frequency relays.
Preferably, signal processing PLC controller I and signal processing PLC controller II use phase homotype in the step S4
Number signal processing controller.
（Three）Advantageous effect
Compared with prior art, the present invention provides a kind of power distribution network protective relaying device, has following advantageous effect：
1, the power distribution network protective relaying device executes mould by the way that abnormal signal acquisition module, signal processing module and protection is arranged
Protective relaying device is divided into three parts by block, carries out independent operating, mutually control respectively so that protective relaying device
It is clear in structure reasonable, convenient for overall management.
2, power distribution network protective relaying device, at setting signal processor, signal processing PLC controller I and signal
PLC controller II is managed, after the information in respective said module is carried out integrated treatment respectively and being compressed by three, then is passed via 4G
Defeated module is transmitted so that network structure is reasonable, and in the period, the signal path needed for transmitted data on network is reduced, in turn
Network transmission efficiency is improved, short time network congestion phenomenon is prevented.
3, power distribution network protective relaying device, by the way that vibrating sensor is arranged, by vibrating sensor to generator and transformation
Vibration frequency detection when device is run, then calculated by the running frequency deviation algorithm of control unit, shaking when running
Vibration frequency when dynamic frequency is compared with normal operation is excessive or too small, that is, illustrates that equipment operation will generate failure or generate event
Barrier accordingly can make equipment operation failure early warning judgement, inform that staff checks equipment in time.
Description of the drawings
Fig. 1 is present system block diagram；
Fig. 2 is abnormal signal acquisition module block diagram of the present invention；
Fig. 3 is signal processing module block diagram of the present invention；
Fig. 4 is present invention protection execution module block diagram；
Fig. 5 is alarm module block diagram of the present invention.
In figure：1, central processing unit；2, abnormal signal acquisition module；21, signal processor；22, current transformer；23,
Voltage transformer；24, vibrating sensor；25, generator；26, transformer；27, busbar end；3,4G transmission modules；4, at signal
Manage module；41, signal processing PLC controller I；42, electric current relay；43, voltage relay；44, control unit；45, frequency
Relay；5, execution module is protected；51, signal processing PLC controller II；52, LED lamp tube；53, optical signal relay；6, it reports
Alert module；61, flashing lamp；62, buzzer.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Please refer to Fig.1-5, a kind of power distribution network protective relaying device, including central processing unit 1, abnormal signal acquisition module 2,
4G transmission modules 3, signal processing module 4, protection execution module 5 and alarm module 6, abnormal signal acquisition module 2 include signal
Processor 21, current transformer 22, voltage transformer 23, vibrating sensor 24, generator 25, transformer 26 and busbar end 27,
The input terminal and output end of signal processor 21 are electrically connected with the output end of central processing unit 1 and input terminal respectively, at signal
The output end of reason device 21 is connect with the input end signal of 4G transmission modules 3, and the input terminal of signal processor 21 is mutual with electric current respectively
The output end of sensor 22, voltage transformer 23 and vibrating sensor 24 is electrically connected, current transformer 22 and voltage transformer 23
Series connection and parallel connection access generator 25, transformer 26 and 27 institute of busbar end in circuit respectively, the sensor of vibrating sensor 24
Part be fixedly connected respectively with the outer wall of generator 25 and transformer 26, the output end of the controller part of vibrating sensor 24 with
The input terminal of signal processor 21 is electrically connected, and can laterally and longitudinally be respectively mounted one group in 26 outer wall of generator 25 and transformer
Vibrating sensor 24, to detect the frequency of different directions, when to more accurately be run to generator 25 and transformer 26
Frequency is detected, the input terminal of central processing unit 1 respectively with the output end of abnormal signal acquisition module 2, signal processing module 4
Output end and protection execution module 5 output end electrical connection, the output end of central processing unit 1 acquires mould with abnormal signal respectively
The input terminal electricity of the input terminal of block 2, the input terminal of signal processing module 4, the input terminal for protecting execution module 5 and alarm module 6
Connection, signal processing module 4 include signal processing PLC controller I 41, electric current relay 42, voltage relay 43, control unit
44 and frequency relay 45, input terminal and the output end output with central processing unit 1 respectively of signal processing PLC controller I 41
End and input terminal are electrically connected, the output end of the input terminal and output end and 4G transmission modules 3 of signal processing PLC controller I 41
Connected with input end signal, the input terminal of signal processing PLC controller I 41 respectively with electric current relay 42, voltage relay 43
Be electrically connected with the output end of control unit 44, the output end of signal processing PLC controller I 41 respectively with electric current relay 42,
Voltage relay 43 and the input terminal of control unit 44 are electrically connected, the input terminal and output end of signal processing PLC controller I 41
It is electrically connected respectively with the output end of control unit 44 and input terminal, the output end of control unit 44 is defeated with frequency relay 45
Enter end to be electrically connected, the algorithmic formula of control unit 44 is determined by following formula：
a≤θ=ABSH1-H2/H2≥b
Wherein a indicates that frequency departure lower limit, b indicate that the frequency departure upper limit, θ indicate current device deviation ratio, H1Expression is currently set
Standby vibration frequency, H2Indicate frequency when equipment normal operation, ABS expressions take absolute value to operation result, specifically, H1Table
Show that the real-time detected value of frequency transmitted by the vibrating sensor 24 installed on generator 25 or transformer 26, abnormal signal acquire mould
The output end of block 2 is connect with the input end signal of 4G transmission modules 3, output end and the signal processing module 4 of 4G transmission modules 3
Input end signal connects, and the output end of signal processing module 4 is connect with the input end signal of another 4G transmission module 3, another
The output end of a 4G transmission modules 3 is connect with the input end signal of protection execution module 5, and protection execution module 5 includes at signal
Manage PLC controller II 51, LED lamp tube 52 and optical signal relay 53, the input terminal of signal processing PLC controller II 51 and output
End is electrically connected with the output end of central processing unit 1 and input terminal respectively, the input terminal and 4G of signal processing PLC controller II 51
The output end signal of transmission module 3 connects, and the output end of signal processing PLC controller II 51 is believed with LED lamp tube 52 and light respectively
The input terminal of number relay 53 is electrically connected, and it includes dodging that 4G transmission modules 3, which use ME3760 type network 4G modules, alarm module 6,
The input terminal of bright lamp 61 and buzzer 62, flashing lamp 61 and buzzer 62 is electrically connected with the output end of central processing unit 1.
A kind of operating method of power distribution network protective relaying device, comprises the steps of：
S1, by current transformer 22 and voltage transformer 23 to the electric current and voltage at generator 25, transformer 26 and busbar end 27
It is acquired respectively and the data of acquisition is sent to signal processor 21, then by vibrating sensor 24 to generator 25 and transformation
The real-time vibration frequency of device 26 is detected and the data of acquisition is sent to signal processor 21；
S2, after the data processing of collection is compressed by signal processor 21, on the one hand by data feedback to central processing unit 1, separately
On the one hand signal processing PLC controller I 41 is transferred to by 4G transmission modules 3, signal processing PLC controller I 41 will receive
Data-signal is corresponding respectively after decompression processing to be sent to electric current relay 42 and voltage relay 43, signal processing PLC controls
Device I 41 receives the frequency data from vibrating sensor 24 via feeding back to signal processing after 44 algorithm process of control unit
PLC controller I 41, then handling result is sent to frequency relay 45 by signal processing PLC controller I 41, by electric current relay
Device 42, voltage relay 43 and frequency relay 45 itself judge that laggard action is made, while actuating signal being fed back at signal
PLC controller I 41 is managed, then is respectively transmitted to central processing unit 1 and signal processing PLC controls by signal processing PLC controller I 41
D7F-S01-10 types vibrating sensor and BCZ-1A type frequencies is respectively adopted in device II 51, vibrating sensor 24 and frequency relay 45
Relay；
S3, the signal come by the transmission of II 51 pairs of signal processing PLC controller carry out decompression processing with after identification, control LED lamp tube
52 light, then so that optical signal relay 53 is acted by the optical signal of LED lamp tube 52, while order is fed back to central processing
Device 1；
S4, by central processing unit 1 to signal processor 21, signal processing PLC controller I 41 and signal processing PLC controller II
51 feedback informations that transmit carry out integrated treatments, control flashing lamp 61 and buzzer 62 is connected and flickers and sounding, signal processing
PLC controller I 41 and signal processing PLC controller II 51 use the signal processing controller of same model.
In conclusion the power distribution network protective relaying device, by the way that abnormal signal acquisition module 2, signal processing module 4 is arranged
With protection execution module 5, protective relaying device is divided into three parts, carries out independent operating, mutually control respectively so that after
Electrical protective device it is clear in structure rationally, convenient for overall management；Pass through setting signal processor 21, signal processing PLC controller I
41 and signal processing PLC controller II 51, the information in respective said module is subjected to integrated treatment respectively by three and is compressed
Afterwards, then via 4G transmission modules 3 it being transmitted so that network structure is reasonable, in the period, the signal needed for transmitted data on network
Channel is reduced, and then improves network transmission efficiency, prevents short time network congestion phenomenon；By the way that vibrating sensor 24 is arranged,
Vibration frequency detection when being run to generator 25 and transformer 26 by vibrating sensor 24, then pass through control unit 44
Running frequency deviation algorithm calculates, and vibration frequency when vibration frequency when running is compared with normal operation is excessive or too small, that is, says
Bright equipment operation will generate failure or generate failure, can make early warning judgement to equipment operation failure accordingly, inform work
Personnel check equipment in time；It solves the not faulty early warning system of traditional relay protection device, the generation of failure can not be predicted, and
Power distribution network is multigroup for the more demanding of network communication when carrying out structure isolation with network recovery power supply to faulty section power grid
The problem of centralized processing of part short time easily causes network congestion phenomenon.
It should be noted that herein, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also include other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
Understanding without departing from the principles and spirit of the present invention can carry out these embodiments a variety of variations, modification, replace
And modification, the scope of the present invention is defined by the appended.
Claims (9)
1. a kind of power distribution network protective relaying device, including central processing unit（1）, abnormal signal acquisition module（2）, 4G transmission modules
（3）, signal processing module（4）, protection execution module（5）And alarm module（6）, it is characterised in that：The central processing unit（1）
Input terminal respectively with abnormal signal acquisition module（2）Output end, signal processing module（4）Output end and protection execute mould
Block（5）Output end electrical connection, the central processing unit（1）Output end respectively with abnormal signal acquisition module（2）Input
End, signal processing module（4）Input terminal, protection execution module（5）Input terminal and alarm module（6）Input terminal be electrically connected
It connects, the abnormal signal acquisition module（2）Output end and 4G transmission modules（3）Input end signal connection, 4G transmission
Module（3）Output end and signal processing module（4）Input end signal connection, the signal processing module（4）Output end
With another 4G transmission module（3）Input end signal connection, another described 4G transmission module（3）Output end held with protection
Row module（5）Input end signal connection, the 4G transmission modules（3）Using ME3760 type network 4G modules.
2. power distribution network protective relaying device according to claim 1, it is characterised in that：The abnormal signal acquisition module
（2）Including signal processor（21）, current transformer（22）, voltage transformer（23）, vibrating sensor（24）, generator
（25）, transformer（26）With busbar end（27）, the signal processor（21）Input terminal and output end respectively with central processing
Device（1）Output end and input terminal be electrically connected, the signal processor（21）Output end and 4G transmission modules（3）Input
End signal connects, the signal processor（21）Input terminal respectively with current transformer（22）, voltage transformer（23）With shake
Dynamic sensor（24）Output end be electrically connected, the current transformer（22）And voltage transformer（23）Series connection and parallel connection respectively
Access generator（25）, transformer（26）With busbar end（27）Institute in circuit, the vibrating sensor（24）Sensor portion
Point respectively with generator（25）And transformer（26）Outer wall be fixedly connected, the vibrating sensor（24）Controller part
Output end and signal processor（21）Input terminal be electrically connected.
3. power distribution network protective relaying device according to claim 1, it is characterised in that：The signal processing module（4）Packet
Include signal processing PLC controller I（41）, electric current relay（42）, voltage relay（43）, control unit（44）With frequency relay
Device（45）, the signal processing PLC controller I（41）Input terminal and output end respectively with central processing unit（1）Output end
It is electrically connected with input terminal, the signal processing PLC controller I（41）Input terminal and output end and 4G transmission modules（3）'s
Output end is connected with input end signal, the signal processing PLC controller I（41）Input terminal respectively with electric current relay
（42）, voltage relay（43）And control unit（44）Output end be electrically connected, the signal processing PLC controller I（41）
Output end respectively with electric current relay（42）, voltage relay（43）And control unit（44）Input terminal be electrically connected, institute
State signal processing PLC controller I（41）Input terminal and output end respectively with control unit（44）Output end and input terminal electricity
Property connection, described control unit（44）Output end and frequency relay（45）Input terminal be electrically connected.
4. power distribution network protective relaying device according to claim 3, it is characterised in that：Described control unit（44）Algorithm
Formula is determined by following formula：
a≤θ=ABS（（H1-H2）/H2）≥b
Wherein a indicates that frequency departure lower limit, b indicate that the frequency departure upper limit, θ indicate current device deviation ratio, H1Indicate current device
Vibration frequency, H2Indicate frequency when equipment normal operation, ABS expressions take absolute value to operation result, specifically, H1It indicates
By generator（25）Or transformer（26）The vibrating sensor of upper installation（24）The real-time detected value of frequency transmitted.
5. power distribution network protective relaying device according to claim 1, it is characterised in that：The protection execution module（5）Packet
Include signal processing PLC controller II（51）, LED lamp tube（52）With optical signal relay（53）, the signal processing PLC controller
Ⅱ（51）Input terminal and output end respectively with central processing unit（1）Output end and input terminal be electrically connected, at the signal
Manage PLC controller II（51）Input terminal and 4G transmission modules（3）Output end signal connection, signal processing PLC control
Device II（51）Output end respectively with LED lamp tube（52）With optical signal relay（53）Input terminal be electrically connected.
6. power distribution network protective relaying device according to claim 1, it is characterised in that：The alarm module（6）Including dodging
Bright lamp（61）And buzzer（62）, the flashing lamp（61）And buzzer（62）Input terminal and central processing unit（1）It is defeated
Outlet is electrically connected.
7. a kind of operating method of power distribution network protective relaying device, which is characterized in that comprise the steps of：
S1, by current transformer（22）And voltage transformer（23）To generator（25）, transformer（26）With busbar end（27）'s
Electric current and voltage are acquired and the data of acquisition are sent to signal processor respectively（21）, then by vibrating sensor（24）It is right
Generator（25）And transformer（26）Real-time vibration frequency be detected and the data of acquisition be sent to signal processor
（21）；
S2, by signal processor（21）After the data processing of collection is compressed, on the one hand by data feedback to central processing unit
（1）, on the other hand by 4G transmission modules（3）It is transferred to signal processing PLC controller I（41）, signal processing PLC controller I
（41）By the data-signal received, correspondence is sent to electric current relay respectively after decompression processing（42）And voltage relay
（43）, signal processing PLC controller I（41）It receives and comes from vibrating sensor（24）Frequency data via control unit（44）
Signal processing PLC controller I is fed back to after algorithm process（41）, then by signal processing PLC controller I（41）Handling result is sent out
Give frequency relay（45）, by electric current relay（42）, voltage relay（43）And frequency relay（45）After itself judges
It is acted, while actuating signal is fed back into signal processing PLC controller I（41）, then by signal processing PLC controller I
（41）It is respectively transmitted to central processing unit（1）With signal processing PLC controller II（51）；
S3, by signal processing PLC controller II（51）Decompression processing is carried out with after identification to transmitting the signal come, controls LED light
Pipe（52）It lights, then by LED lamp tube（52）Optical signal make optical signal relay（53）It acts, while order being fed back to
Central processing unit（1）；
S4, by central processing unit（1）To signal processor（21）, signal processing PLC controller I（41）It is controlled with signal processing PLC
Device II processed（51）The feedback information transmitted carries out integrated treatment, controls flashing lamp（61）And buzzer（62）It is connected and flickers and send out
Sound.
8. the operating method of power distribution network protective relaying device according to claim 7, it is characterised in that：In the step S2
Vibrating sensor（24）And frequency relay（45）Be respectively adopted D7F-S01-10 types vibrating sensor and BCZ-1A types frequency after
Electric appliance.
9. the operating method of power distribution network protective relaying device according to claim 7, it is characterised in that：In the step S4
Signal processing PLC controller I（41）With signal processing PLC controller II（51）Using the signal processing controller of same model.
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| CN201810791083.9A CN108736456B (en) | 2018-07-18 | 2018-07-18 | Power distribution network protective relaying device |
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|---|---|---|---|
| CN201810791083.9A CN108736456B (en) | 2018-07-18 | 2018-07-18 | Power distribution network protective relaying device |
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| CN108736456A true CN108736456A (en) | 2018-11-02 |
| CN108736456B CN108736456B (en) | 2019-10-08 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112670126A (en) * | 2020-12-17 | 2021-04-16 | 李桂蓉 | Digital AC voltage relay |
| US11474136B2 (en) * | 2019-09-06 | 2022-10-18 | Inventec (Pudong) Technology Corporation | Method for examining differential pair transmission lines |
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| CN112670126A (en) * | 2020-12-17 | 2021-04-16 | 李桂蓉 | Digital AC voltage relay |
| CN112670126B (en) * | 2020-12-17 | 2023-08-25 | 李桂蓉 | Digital alternating-current voltage relay |
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| CN108736456B (en) | 2019-10-08 |
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