CN105656199B - Automatic dynamic monitoring is digital to connect power transmission line - Google Patents

Automatic dynamic monitoring is digital to connect power transmission line Download PDF

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Publication number
CN105656199B
CN105656199B CN201610006098.0A CN201610006098A CN105656199B CN 105656199 B CN105656199 B CN 105656199B CN 201610006098 A CN201610006098 A CN 201610006098A CN 105656199 B CN105656199 B CN 105656199B
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Prior art keywords
relay
normally opened
circuit
digital
opened contact
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CN201610006098.0A
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CN105656199A (en
Inventor
王颂锋
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Wuhan Lead Electric Power Technology Co Ltd
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Wuhan Lead Electric Power Technology Co Ltd
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Priority to CN201610006098.0A priority Critical patent/CN105656199B/en
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    • H02J13/0075
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00Circuit arrangements for ac mains or ac distribution networks
    • H02J3/001Methods to deal with contingencies, e.g. abnormalities, faults or failures
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • YGENERAL 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
    • Y04INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04SSYSTEMS 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
    • Y04S40/00Systems 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
    • Y04S40/12Systems 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
    • Y04S40/126Systems 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 automatic dynamic monitoring it is digital connect power transmission line, it include first ground wire, second ground wire, the 3rd be grounded and master control set;Master control set includes current sensor, signal processing circuit, control chip, communicating circuit, gating circuit and display;Current sensor exports detection signal;Signal processing circuit is amplified to detection signal, analog-to-digital conversion, with outputting standard data-signal;Control chip receives normal data signals, generates real-time current data;The real-time current data of communicating circuit distal end transmission control chip output are to controller;Controller identifies job failure according to real-time current data digital display real-time current numerical value, and according to real-time current data;Only after controller identifies job failure, control first line switch, the second line switching and tertiary circuit switch are cut off gating circuit in order;Display number receives the real-time current data digital display real-time current numerical value of control chip output.

Description

Automatic dynamic monitoring is digital to connect power transmission line
Technical field
The present invention relates to technical field of electric power, more particularly to a kind of automatic dynamic monitoring is digital to connect power transmission line.
Background technology
For it is super extra-high voltage double back, more times cross-arms or with a plurality of circuit long range parallel laying circuit in corridor, and it is super The less circuit in high-tension line scissors crossing point the air gap, when certain stoppage in transit circuit is overhauled wherein, because of electromagnetism sense Answer phenomenon stoppage in transit circuit to have larger induced voltage and induced-current, occur that arcing is discharged when mounting connection electric transmission line, it is right Connection electric transmission line, cause to burn.
In addition, in high voltage device of transformer station interruption maintenance, prevent from being dashed forward by repair apparatus commonly using connection electric transmission line So incoming call or induced electricity cause accident of human electric shock.But due to human error's factor, and band connection electric transmission line easily occurs and closes Lock accident, how effectively anti-stop-band connection electric transmission line combined floodgate accident, is power industry unsolved safe practice for a long time Problem.
The content of the invention
The purpose of the present invention is to overcome or slow down the part at least the above shortcoming, provides a kind of automatic dynamic monitoring hereby Digital to connect power transmission line, it includes:
First ground wire, is switched provided with first line;
Second ground wire, provided with the second line switching;
3rd ground wire, is switched provided with tertiary circuit;
Master control set, there is two inputs and an output end, the input of two master control sets to pass through respectively Second ground wire and the 3rd ground wire are connected with cross-arm, and the output end of the master control set is connected by the first ground wire with ground wire Connect, the first line switch or the second line switching are crowbar switch;
The master control set include current sensor, signal processing circuit, control chip, communicating circuit, gating circuit with And display;
The current sensor detects the electric current in first ground wire or the second ground wire or the 3rd ground wire, with defeated Go out detection signal;
The signal processing circuit is amplified to the detection signal, analog-to-digital conversion, with outputting standard data-signal;
The control chip receives the normal data signals, generates real-time current data;
The real-time current data of the control chip output are transmitted to controller in communicating circuit distal end;
The controller is according to the real-time current data digital display real-time current numerical value, and according to the real-time current data Identify job failure;
The gating circuit controls the first line switch, the second line only after the controller identifies job failure Way switch and tertiary circuit switch are cut off in order;
The display number receives the real-time current data digital display real-time current numerical value of the control chip output.
Preferably, the signal processing circuit includes amplifier and analog-digital converter, and the amplifier is believed the detection Number it is amplified, the analog-digital converter carries out analog-to-digital conversion, to export digital detection signal, institute to the detection signal after amplification Digital detection signal is stated to export to control chip.
Preferably, the control chip selects single-chip microcomputer, and the communicating circuit selects GPRS module, and the single-chip microcomputer passes through Interface circuit communicates with GPRS module.
Preferably, the first line switch is the first relay, and second line switching is low-vacuum load-tripping device, described Tertiary circuit switch is the second relay;
The gating circuit includes digital start-up circuit and high-voltage starting circuit;
The digital start-up circuit includes switch element, and the control pole of the switch element is connected with control chip, described One end of switch element is grounded by the coil of auxiliary reclay, and the other end is connected with power supply;
The high-voltage starting circuit includes the first on-delay time relay, the second on-delay time relay, the Three energization time delay relays, the first power cut off delay time relay, the second power cut off delay time relay, the 3rd power-off are prolonged When the time relay, normally opened contact one end of the auxiliary reclay is connected with unit, and the other end passes through the first relay respectively It is grounded with the coil of the first energization delay relay, the normally opened contact of the auxiliary reclay is parallel with first power cut off delay The normally opened contact of the time relay, the normally opened contact of the first on-delay time relay respectively by low-vacuum load-tripping device and The coil ground connection of the second on-delay time relay, the normally opened contact parallel connection of the first on-delay time relay is The normally opened contact of the second power cut off delay time relay is stated, the normally opened contact of the second on-delay time relay leads to respectively Cross the coil ground connection of the second relay and the 3rd energization time delay relay, the second on-delay time relay it is normal Opening contact shunt has the normally opened contact of the 3rd power cut off delay time relay, the first power cut off delay time relay Coil one end passes through the normally opened contact of the first on-delay time relay and the normally opened contact and power supply of the auxiliary reclay Connection, other end ground connection, coil one end of the second power cut off delay time relay passes through the second on-delay time relay The normally opened contact of the normally opened contact of device and the auxiliary reclay is connected with power supply, other end ground connection, the 3rd power cut off delay Coil one end of the time relay is normal by the normally opened contact of the 3rd energization time delay relay and the auxiliary reclay Open contact to be connected with power supply, other end ground connection.
The present invention is switched by master control set to first line, the second line switching and tertiary circuit switch cut-off, Realize the connection of remote control cross-arm and transmission line of electricity;Meanwhile, it is capable to exterior terminal is set distally to monitor in real time in ground wire Electric current, the generation for the failure such as prevent from transfiniting.
Brief description of the drawings
These and other aspects of the invention is described more fully now with reference to appended accompanying drawing, it show the present invention Currently preferred embodiment.Wherein:
Fig. 1 is the structure chart of the present embodiment;
Fig. 2 is the circuit theory diagrams of master control set;
Fig. 3 is the circuit structure diagram of digital start-up circuit;
Fig. 4 is the automatically controlled figure of high-voltage starting circuit.
In figure:1st, the first ground wire;2nd, the second ground wire;3rd, the 3rd ground wire;4th, master control set.
Embodiment
Below in conjunction with the accompanying drawings and instantiation, the present invention is furture elucidated, it should be understood that these embodiments are merely to illustrate this Invention rather than limitation the scope of the present invention, after the present invention has been read, those skilled in the art are various to the present invention's The modification of the equivalent form of value falls within the application appended claims limited range.
As shown in figure 1, a kind of automatic dynamic monitoring is digital to connect power transmission line, it includes:
First ground wire 1, is switched provided with first line;Second ground wire 2, provided with the second line switching;3rd ground wire 3, switched provided with tertiary circuit;Master control set 4, there is two inputs and an output end, the input of two master control sets 4 3 be connected respectively by the second ground wire 2 and the 3rd ground wire with cross-arm, the output end of master control set 4 by first be grounded 1 and Ground wire connects, and first line switch or the second line switching are crowbar switch.
As shown in Fig. 2 master control set 4 includes current sensor, signal processing circuit, control chip, communicating circuit, gating Circuit and display;
Electric current in the ground wire 1 of current sensor detection first of the present embodiment, to export detection signal;
The signal processing circuit of the present embodiment includes amplifier and analog-digital converter, and amplifier is put to detection signal Greatly, analog-digital converter carries out analog-to-digital conversion to the detection signal after amplification, to export the Digital Detecting as normal data signals Signal, digital detection signal are exported to control chip.
The control chip of the present embodiment selects single-chip microcomputer, single-chip microcomputer real-time reception digital detection signal, reality corresponding to generation When current data.Display number receives the real-time current data digital display real-time current numerical value of single-chip microcomputer output.
Meanwhile the communicating circuit of the present embodiment selects GPRS module, single-chip microcomputer is communicated by interface circuit and GPRS module, In order to which real-time current data are wirelessly transmitted into controller.The present embodiment as exterior terminal controller according to real-time current Data digital display real-time current numerical value, and identify job failure according to real-time current data;
For the controller of the present embodiment after job failure is identified, controller produces control signal, and is led to by GPRS module News to single-chip microcomputer, single-chip microcomputer controls first line switch, the second line switching and tertiary circuit switch by pre- according to control signal If order open or cut-out, making being capable of secure attachment or disconnection between cross-arm and transmission line of electricity.
Specifically as shown in Figure 3 and Figure 4, the gating circuit of the present embodiment includes digital start-up circuit and high-voltage starting circuit.
As shown in figure 3, digital start-up circuit includes triode Q1, triode Q1 control pole is connected with control chip, three Pole pipe Q1 one end is grounded by auxiliary reclay KM1 coil, and the other end is connected with power supply;
As shown in figure 4, the first line switch of the present embodiment is the first low-vacuum load-tripping device K1, second line switching is Second low-vacuum load-tripping device K2, the tertiary circuit switch is the 3rd low-vacuum load-tripping device K3;
High-voltage starting circuit include the first on-delay time relay KT1, the second on-delay time relay KT2, 3rd energization time delay relay KT3, the first power cut off delay time relay KA1, the second power cut off delay time relay KA2, the 3rd power cut off delay time relay KA3, auxiliary reclay KM1 normally opened contact one end are connected with unit, the other end point It is not grounded by the coil of the first low-vacuum load-tripping device K1 and the first energization delay relay, auxiliary reclay KM1 normally opened contact It is parallel with the first power cut off delay time relay KA1 normally opened contact, the first on-delay time relay KT1 normally opened contact It is grounded respectively by the second low-vacuum load-tripping device K2 and the second on-delay time relay KT2 coil, during the first on-delay Between relay KT1 normally opened contact be parallel with the second power cut off delay time relay KA2 normally opened contact, during the second on-delay Between relay KT2 normally opened contact connect respectively by the 3rd low-vacuum load-tripping device K3 and the 3rd energization time delay relay coil Ground, the second on-delay time relay KT2 normally opened contact are parallel with the normally opened of the 3rd power cut off delay time relay KA3 and touched Point, the normally opened contact that the first power cut off delay time relay KA1 coil one end passes through the first on-delay time relay KT1 It is connected with auxiliary reclay KM1 normally opened contact with power supply, other end ground connection, the second power cut off delay time relay KA2 line Circle one end passes through the second on-delay time relay KT2 normally opened contact and auxiliary reclay KM1 normally opened contact and power supply Connection, other end ground connection, the 3rd power cut off delay time relay KA3 coil one end passes through the 3rd energization time delay relay KT3 normally opened contact and auxiliary reclay KM1 normally opened contact are connected with power supply, other end ground connection.
With reference to said structure design, the operation principle of the present embodiment is as follows:
When needing to make transmission line of electricity be connected with cross-arm, single-chip microcomputer output high level, triode Q1 is turned on, and makes KM1 line Circle is powered;KM1 normally opened contact closure, K1, KT1 coil are powered, KA1 normally opened contact closure;Default safety time T1 Afterwards, KT1 normally opened contact closure, K2, KT2 coil are powered;After default safety time T2, KT2 normally opened contact closure, K3 It is powered with KT3 coil.Meanwhile in KM1 normally opened contact closure, in preset time T 1, KA1 coil electricity;In advance If during time T2, KA2 coil electricity;During preset time T 3.KA3 coil electricity,
When needing to make transmission line of electricity disconnect with cross-arm, single product machine exports low level, and triode Q1 is turned off, and makes KM1 line Circle power-off;KM1 normally opened contact disconnects, and KA1, KA2, KA3 disconnect at preset timed intervals respectively, and specific time KA3 is more than more than KA2 KA1, then make K3 first disconnect, K2 disconnects again, K1 finally disconnects, and realizes the connection between safety cut-off transmission line of electricity and cross-arm.
The content not being described in detail in this specification belongs to prior art known to professional and technical personnel in the field.

Claims (4)

1. a kind of automatic dynamic monitoring is digital to connect power transmission line, it is characterised in that including:
First ground wire, is switched provided with first line;
Second ground wire, provided with the second line switching;
3rd ground wire, is switched provided with tertiary circuit;
Master control set, there is two inputs and an output end, the input of two master control sets to pass through second respectively Ground wire and the 3rd ground wire are connected with cross-arm, and the output end of the master control set is connected by the first ground wire with ground wire, institute It is crowbar switch to state first line switch or the second line switching;
The master control set includes current sensor, signal processing circuit, control chip, communicating circuit, gating circuit and shown Show device;
The current sensor detects the electric current in first ground wire or the second ground wire or the 3rd ground wire, to export inspection Survey signal;
The signal processing circuit is amplified to the detection signal, analog-to-digital conversion, with outputting standard data-signal;
The control chip receives the normal data signals, generates real-time current data;
The real-time current data of the control chip output are transmitted to controller in communicating circuit distal end;
The controller identifies according to the real-time current data digital display real-time current numerical value, and according to the real-time current data Job failure;
The gating circuit controls the first line switch, the second circuit to open only after the controller identifies job failure Close and tertiary circuit switch is cut off in order;
The display receives the real-time current data digital display real-time current numerical value of the control chip output.
2. automatic dynamic monitoring according to claim 1 is digital to connect power transmission line, it is characterised in that
The signal processing circuit includes amplifier and analog-digital converter, and the amplifier is amplified to the detection signal, The analog-digital converter carries out analog-to-digital conversion to the detection signal after amplification, to export digital detection signal, the Digital Detecting Signal output is to control chip.
3. automatic dynamic monitoring according to claim 1 is digital to connect power transmission line, it is characterised in that
The control chip selects single-chip microcomputer, and the communicating circuit selects GPRS module, the single-chip microcomputer by interface circuit with GPRS module communicates.
4. automatic dynamic monitoring according to claim 1 is digital to connect power transmission line, it is characterised in that
The first line switch is the first relay, and second line switching is low-vacuum load-tripping device, and the tertiary circuit is opened Pass is the second relay;
The gating circuit includes digital start-up circuit and high-voltage starting circuit;
The digital start-up circuit includes switch element, and the control pole of the switch element is connected with control chip, the switch One end of element is grounded by the coil of auxiliary reclay, and the other end is connected with power supply;
The high-voltage starting circuit includes the first on-delay time relay, the second on-delay time relay, threeway When electric time delay relay, the first power cut off delay time relay, the second power cut off delay time relay, three power cut off delay Between relay, normally opened contact one end of the auxiliary reclay passes through the first relay and the first energization delay relay respectively Coil is grounded, and the normally opened contact of the auxiliary reclay is parallel with the normally opened contact of the first power cut off delay time relay, The normally opened contact of the first on-delay time relay passes through low-vacuum load-tripping device and the second on-delay time relay respectively The coil ground connection of device, the normally opened contact of the first on-delay time relay be parallel with the second power cut off delay time after The normally opened contact of electrical equipment, the normally opened contact of the second on-delay time relay pass through the second relay and threeway respectively The coil ground connection of electric time delay relay, the normally opened contact of the second on-delay time relay are parallel with the described 3rd The normally opened contact of the power cut off delay time relay, coil one end of the first power cut off delay time relay are powered by first The normally opened contact of the normally opened contact of time delay relay and the auxiliary reclay is connected with power supply, other end ground connection, described Coil one end of the second power cut off delay time relay by the normally opened contact of the second on-delay time relay and it is described in Between the normally opened contact of relay be connected with power supply, other end ground connection, coil one end of the 3rd power cut off delay time relay It is connected by the normally opened contact of the 3rd energization time delay relay and the normally opened contact of the auxiliary reclay with power supply, it is another End ground connection.
CN201610006098.0A 2016-01-07 2016-01-07 Automatic dynamic monitoring is digital to connect power transmission line Active CN105656199B (en)

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Application Number Priority Date Filing Date Title
CN201610006098.0A CN105656199B (en) 2016-01-07 2016-01-07 Automatic dynamic monitoring is digital to connect power transmission line

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107831701B (en) * 2017-11-17 2020-05-05 广西电网有限责任公司防城港供电局 Lightning stroke fault positioning and identifying system

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CN202748400U (en) * 2012-08-30 2013-02-20 山东电力集团公司济南供电公司 Earth current monitoring device for power transmission cable terminal oversheath
CN202975125U (en) * 2012-11-19 2013-06-05 廊坊霸州供电有限公司 Auxiliary electricity testing device for grounding
CN203535151U (en) * 2013-06-28 2014-04-09 河南省电力公司驻马店供电公司 Grounding display device for 10-35 kV electric power circuit
CN104505823A (en) * 2014-12-02 2015-04-08 国家电网公司 Method for power maintenance through transient power stop and transient stop selective reclosing circuit

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Publication number Priority date Publication date Assignee Title
CN102809680B (en) * 2012-08-27 2015-01-21 北京四方继保自动化股份有限公司 Anti-interference switching value transmission circuit

Patent Citations (4)

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Publication number Priority date Publication date Assignee Title
CN202748400U (en) * 2012-08-30 2013-02-20 山东电力集团公司济南供电公司 Earth current monitoring device for power transmission cable terminal oversheath
CN202975125U (en) * 2012-11-19 2013-06-05 廊坊霸州供电有限公司 Auxiliary electricity testing device for grounding
CN203535151U (en) * 2013-06-28 2014-04-09 河南省电力公司驻马店供电公司 Grounding display device for 10-35 kV electric power circuit
CN104505823A (en) * 2014-12-02 2015-04-08 国家电网公司 Method for power maintenance through transient power stop and transient stop selective reclosing circuit

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