CN103683513A - Small current grounding fault online information monitoring and controlling method and device - Google Patents
Small current grounding fault online information monitoring and controlling method and device Download PDFInfo
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- CN103683513A CN103683513A CN201310725050.1A CN201310725050A CN103683513A CN 103683513 A CN103683513 A CN 103683513A CN 201310725050 A CN201310725050 A CN 201310725050A CN 103683513 A CN103683513 A CN 103683513A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
- Y04S20/242—Home appliances
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/126—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wireless data transmission
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Abstract
The invention discloses a small current grounding fault online information monitoring and controlling method and device. The monitoring and controlling method includes a grounding fault remote automatic monitoring and controlling method, a remote manual monitoring and controlling method and a GPRS (general packet radio service) module automatic restart method, the device comprises a monitoring and controlling device and a zero-sequence voltage and zero-sequence current monitoring and controlling device, the monitoring and controlling device is mounted on a remote monitoring and controlling center, the zero-sequence voltage and zero-sequence current monitoring and controlling device is mounted on a circuit and comprises an ADC (analog-to-digital converter) controller module, a timer module, an ARMCortex-M3 processor chip, a GPS (global positioning system) module, a WatchDog controller module, an external KB3030 GPRS module, a universal component and a GPRS switch control circuit, the universal component comprises external interfaces, and the GPRS switch control circuit comprises elements such as a relay. The method and the device solve the problems of data backlogging and low utilization efficiency of GPRS communication in the small current grounding fault online information monitoring and controlling process by the aid of wide-area monitoring technology.
Description
Technical field
The present invention relates to electric power system distribution technique field, particularly in distribution system, utilize wide area measurement technology to carry out a kind of single-phase grounded malfunction in grounded system of low current online information monitoring and control method and the device of Monitoring and Controlling.
Background technology
At present, the system for distribution network of power network of China be take non-effective earthing mode as main, comprise that isolated neutral, neutral by arc extinction coil grounding and neutral point are through high resistance grounding mode, wherein through grounding through arc mode, account for major part, in the distribution network system through grounding through arc, compensating action due to arc suppression coil, in circuit, zero-sequence current characteristic information is destroyed, in this case, judge and locate single phase ground fault section and become a difficult problem that not yet obtains fine solution.
Application number is the online localization method > of the < < low current grounding subregion segmentation > patent that 201220012928.8 the online localization method of < < section with low-current ground faults and system > > patent thereof and application number are 201210027405.5, section with low-current ground faults location concept and method are proposed, but legacy devices sends residual voltage and zero-sequence current phasor information is one-way communication, poor controllability, and when breaking down, because data overstock, cause GPRS communication not smooth, there is mess code phenomenon and cause sensor line plate minimum system to crash, in addition because little electric current single phase ground fault occurrence frequency has seasonal periodicity, a large amount of failure-free data have taken communication channel, expense is increased.
The invention reside in the defect overcoming in above-mentioned technology, in small current neutral grounding system, provide a kind of channel utilization in wide area measurement technology, convenient reliable technical method and new device of improving.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind of low current grounding online information monitoring and control method and device are provided.
The method of the invention and device are by realizing with following technical proposals:
Described method comprises single phase ground fault long-range automatic monitoring control method, remote handle monitoring and control method and three methods of GPRS module autoboot:
(1), long-range automatic monitoring control method
1) first utilize gps time synchronization module, the residual voltage monitor controller in all wide area monitoring ranges and zero-sequence current monitor controller are carried out to time synchronized access and adjust;
2) when transmission line normally moves, utilize residual voltage monitor controller and some zero-sequence current monitor controllers to gather residual voltage and the zero-sequence current phasor information of circuit, deposit buffer in, and drive with GPS pulse per second (PPS), new data is covered to legacy data;
3), when the residual voltage amplitude of circuit is more than or equal to the threshold value of setting, by residual voltage monitor controller, send warning message to monitor controller;
4) after monitor controller receives and reports to the police, by the GPRS communication module of monitor controller, mass-sending command information is to all zero-sequence current monitor controllers in this circuit downstream in wide scope, start the GPRS communication module of each zero-sequence current monitor controller, 5 seconds zero-sequence current phasor information of record are sent to the electric current receiver module of monitor controller.
(2), remote handle monitoring and control method
1) first utilize gps time synchronization module, the residual voltage monitor controller in all wide area monitoring ranges and zero-sequence current monitor controller are carried out to time synchronized access and adjust;
2) by manually waking, restart module up by monitor controller, send separately, combine transmission, mass-sending zero-sequence current monitor controller command information, the GPRS module of the zero-sequence current monitor controller of remote activation separately, in one group, all wide area monitoring ranges, sends zero-sequence current information; Staff manually wakes, restarts module up by monitor controller, sends separately, combination sends, mass-sending zero-sequence current monitor controller restarting information the zero-sequence current monitor controller of remote reboot separately, in one group, all wide area monitoring ranges.
(3), GPRS module autoboot method
1) electric current of setting device (voltage) measuring point power-off control module generated a packet with confirmation every 10-20 minute cycle;
2) the GPRS communication module of monitor controller send to confirm that packet is to all residual voltage monitor controllers and zero-sequence current monitor controller in wide area monitoring range;
3) residual voltage/zero-sequence current control relay control device receives information;
4) if information at 10-20 minute, in interval, receive, replacement timer generates 10-20 minute interval interrupt, waits for next confirmation;
5) if information at 10-20 minute interval, do not receive, residual voltage/zero-sequence current control relay control device is by 2 seconds of Control GPRS power-off; Replacement timer generates 10-20 minute interval interrupt.
A kind of monitor controller of described low current grounding online information monitoring and control method, it includes three parts: be arranged on the monitor controller of remote monitoring center, residual voltage monitor controller and zero-sequence current monitor controller are on the line installed, described residual voltage or zero-sequence current monitor controller comprise universal component and the custom-designed GPRS ON-OFF control circuit that ADC controller module, timer module, ARM Cortex-M3 processor chips, GPS module, WatchDog controller module, external KB3030GPRS module, each external interface form, realize the GPRS ON-OFF control circuit of signaling channel cycle monitoring by triode, Light-Emitting Diode, diode, relay and two resistance and auxiliary plug-in form, the base stage connecting resistance R66 of its triode Q2, grounded emitter, the terminal 6 of collector connecting relay is also in parallel with the anode of diode DD5 and the negative electrode of light-emitting diode D11, in parallel with the terminal 2 of relay and the negative electrode of diode DD5 after the anode connecting resistance R67 of light-emitting diode D11, power supply is connected on 1 and 2 terminals of relay, the terminal 5 connector PWR2.5 of relay, an outlet PC11 of GPRS ON-OFF control circuit connects 65 terminals of ARM Cortex-M3 processor, another two outlets connect the terminal of KB3030, wherein one in GPRS ON-OFF control circuit inside through shell fragment S ground connection.
Owing to having adopted said method and device, the data of utilizing wide area monitoring technology to carry out in low current grounding online information Monitoring and Controlling process are overstock, GPRS communication utilization ratio problem is resolved.
accompanying drawing explanation
Fig. 1 is small current neutral grounding system earth fault online information monitoring and control method flow chart;
Fig. 2 is residual voltage or zero-sequence current monitor controller system block diagram;
Fig. 3 is GPRS ON-OFF control circuit structure wiring schematic diagram.
Embodiment
Below in conjunction with accompanying drawing, the structure of method of the present invention, device and circuit are elaborated:
As seen from Figure 1, monitor controller of the present invention includes three parts, is arranged on the monitor controller of remote monitoring center, and residual voltage monitor controller and zero-sequence current monitor controller are on the line installed; The monitoring and control method that device adopts is:
One, long-range automatic monitoring control method
1) first utilize gps time synchronization module, the residual voltage monitor controller in all wide area monitoring ranges and zero-sequence current monitor controller are carried out to time synchronized access and adjust.
2) when in circuit, fault-free occurs, residual voltage monitor controller and each zero current monitor controller gather residual voltage and zero-sequence current phasor information, deposit buffer in, and drive with GPS pulse per second (PPS), new data is covered to legacy data, do not start GPRS module and send phasor information.
3) when the residual voltage amplitude of circuit is more than or equal to the threshold value of setting, so, in this circuit and downstream leg thereof, occurred single phase ground fault, residual voltage monitor controller GPRS communication module sends to monitor controller by residual voltage phasor warning message.
4) the voltage receiver module of monitor controller receives after the phasor warning message of the line zero sequence voltage that residual voltage monitor controller sends, monitor controller is reported to the police, by the GPRS communication module of monitor controller, mass-sending command information is to all zero-sequence current monitor controllers in this circuit downstream in wide scope, start the GPRS communication module of each zero-sequence current monitor controller, 5 seconds zero-sequence current phasor information of record are sent to the electric current receiver module of monitor controller.
Two, remote handle monitoring and control method
For guaranteeing the accurate arrival of data of long-range automatic monitoring control method and the Information Monitoring of all residual voltage/zero-sequence current monitor controllers in staff's real time inspection wide scope, set up remote handle monitoring and control method.
1) first utilize gps time synchronization module, the residual voltage monitor controller in all wide area monitoring ranges and zero-sequence current monitor controller are carried out to time synchronized access and adjust.
2) staff manually wakes, restarts module up by monitor controller, send separately, combine transmission, mass-sending zero-sequence current monitor controller command information, the GPRS module of the zero-sequence current monitor controller of remote activation separately, in one group, all wide area monitoring ranges, sends zero-sequence current information.Staff manually wakes, restarts module up by monitor controller, sends separately, combination sends, mass-sending zero-sequence current monitor controller restarting information the zero-sequence current monitor controller of remote reboot separately, in one group, all wide area monitoring ranges.
Three, GPRS module autoboot method
In order to improve the stability of system, guarantee long-range automatic monitoring control method, remote handle monitoring and control method GPRS module communication unobstructed, sets up GPRS module autoboot method.
1) electric current of monitor controller, voltage measuring point power-off control module generated a packet with confirmation every 10-20 minute cycle.
2) the GPRS communication module of monitor controller send to confirm that packet is to all residual voltage monitor controllers and zero-sequence current monitor controller in wide area monitoring range.
3) residual voltage/zero-sequence current control relay control device receives information.
4) if information at 10-20 minute, in interval, receive, replacement timer generates 10-20 minute interval interrupt, waits for next confirmation.
5) if information at 10-20 minute interval, do not receive, residual voltage/zero-sequence current control relay control device is by 2 seconds of Control GPRS power-off, replacement timer generates 10-20 minute interval interrupt.
By Fig. 2, Fig. 3 is visible, residual voltage of the present invention or zero-sequence current monitor controller comprise ADC controller, timer, ARM Cortex-M3 processor chips, GPS module, WatchDog controller module, external KB3030GPRS module, the universal component that relevant external interface forms, these parts can be installed by power electronic equipment function and compound mode, in equipment, in order to implement method of the present invention, special specialized designs a GPRS ON-OFF control circuit part, its circuit structure and wiring are as follows: realize the GPRS ON-OFF control circuit of signaling channel cycle monitoring by triode, Light-Emitting Diode, diode, relay and two resistance and auxiliary plug-in form, the base stage connecting resistance R66 of its triode Q2, grounded emitter, the terminal 6 of collector connecting relay is also in parallel with the anode of diode DD5 and the negative electrode of light-emitting diode D11, in parallel with the terminal 2 of relay and the negative electrode of diode DD5 after the anode connecting resistance R67 of light-emitting diode D11, power supply is connected on 1 and 2 terminals of relay, the terminal 5 connector PWR2.5 of relay, an outlet PC11 of GPRS ON-OFF control circuit connects 65 terminals of ARM Cortex-M3 processor, another two outlets connect the terminal of KB3030, wherein one in GPRS ON-OFF control circuit inside through shell fragment S ground connection.
The whole selection standard parts of the electronic device that device of the present invention adopts and material and GB material, take best fit as standard, at this, is not elaborated.
Claims (2)
1. a small current neutral grounding system earth fault online information monitoring and control method, is characterized in that: described method comprises earth fault long-range automatic monitoring control method, remote handle monitoring and control method and three methods of GPRS module autoboot:
(1), long-range automatic monitoring control method
1) first utilize gps time synchronization module, the residual voltage monitor controller in all wide area monitoring ranges and zero-sequence current monitor controller are carried out to time synchronized access and adjust;
2) when transmission line normally moves, utilize residual voltage monitor controller and some zero-sequence current monitor controllers to gather residual voltage and the zero-sequence current phasor information of circuit, deposit buffer in, and drive with GPS pulse per second (PPS), new data is covered to legacy data;
3), when the residual voltage amplitude of circuit is more than or equal to the threshold value of setting, by residual voltage monitor controller, send warning message to monitor controller;
4) after monitor controller receives and reports to the police, by the GPRS communication module of monitor controller, mass-sending command information is to all zero-sequence current monitor controllers in this circuit downstream in wide scope, start the GPRS communication module of each zero-sequence current monitor controller, 5 seconds zero-sequence current phasor information of record are sent to the electric current receiver module of monitor controller;
(2), remote handle monitoring and control method
1) first utilize gps time synchronization module, the residual voltage monitor controller in all wide area monitoring ranges and zero-sequence current monitor controller are carried out to time synchronized access and adjust;
2) by manually waking, restart module up by monitor controller, send separately, combine transmission, mass-sending zero-sequence current monitor controller command information, the GPRS module of the zero-sequence current monitor controller of remote activation separately, in one group, all wide area monitoring ranges, sends zero-sequence current information; Staff manually wakes, restarts module up by monitor controller, sends separately, combination sends, mass-sending zero-sequence current monitor controller restarting information the zero-sequence current monitor controller of remote reboot separately, in one group, all wide area monitoring ranges;
(3), GPRS module autoboot method
1) electric current of setting device (voltage) measuring point power-off control module generated a packet with confirmation every 10-20 minute cycle;
2) the GPRS communication module of monitor controller send to confirm that packet is to all residual voltage monitor controllers and zero-sequence current monitor controller in wide area monitoring range;
3) residual voltage/zero-sequence current control relay control device receives information;
4) if information at 10-20 minute, in interval, receive, replacement timer generates 10-20 minute interval interrupt, waits for next confirmation;
5) if information at 10-20 minute interval, do not receive, residual voltage/zero-sequence current control relay control device is by 2 seconds of Control GPRS power-off; Replacement timer generates 10-20 minute interval interrupt.
2. the monitor controller of low current grounding online information monitoring and control method according to claim 1, it includes three parts: be arranged on the monitor controller of remote monitoring center, residual voltage monitor controller and zero-sequence current monitor controller are on the line installed, described residual voltage or zero-sequence current monitor controller comprise ADC controller module, timer module, ARM Cortex-M3 processor chips, GPS module, WatchDog controller module, external KB3030GPRS module, universal component and a GPRS ON-OFF control circuit that each external interface forms, it is characterized in that: realize the GPRS ON-OFF control circuit of signaling channel cycle monitoring by triode, Light-Emitting Diode, diode, relay and two resistance and auxiliary plug-in form, the base stage connecting resistance R66 of its triode Q2, grounded emitter, the terminal 6 of collector connecting relay is also in parallel with the anode of diode DD5 and the negative electrode of light-emitting diode D11, in parallel with the terminal 2 of relay and the negative electrode of diode DD5 after the anode connecting resistance R67 of light-emitting diode D11, power supply is connected on 1 and 2 terminals of relay, the terminal 5 connector PWR2.5 of relay, an outlet PC11 of GPRS ON-OFF control circuit connects 65 terminals of ARM Cortex-M3 processor, another two outlets connect the terminal of KB3030, wherein one in GPRS ON-OFF control circuit inside through shell fragment S ground connection.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310725050.1A CN103683513B (en) | 2013-12-25 | 2013-12-25 | Low current grounding online information monitoring and control method and device |
| PCT/CN2014/089523 WO2015096546A1 (en) | 2013-12-25 | 2014-10-26 | On-line information monitoring and control method and system for low-current grounding fault |
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| CN201310725050.1A CN103683513B (en) | 2013-12-25 | 2013-12-25 | Low current grounding online information monitoring and control method and device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2015096546A1 (en) * | 2013-12-25 | 2015-07-02 | 国家电网公司 | On-line information monitoring and control method and system for low-current grounding fault |
| CN104914347A (en) * | 2015-05-20 | 2015-09-16 | 广西电网有限责任公司桂林供电局 | Grounding fault judgment method based on time axis comparison of Beidou satellite time service |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015096546A1 (en) * | 2013-12-25 | 2015-07-02 | 国家电网公司 | On-line information monitoring and control method and system for low-current grounding fault |
| CN104914347A (en) * | 2015-05-20 | 2015-09-16 | 广西电网有限责任公司桂林供电局 | Grounding fault judgment method based on time axis comparison of Beidou satellite time service |
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