CN103683513B - Low current grounding online information monitoring and control method and device - Google Patents
Low current grounding online information monitoring and control method and device Download PDFInfo
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- CN103683513B CN103683513B CN201310725050.1A CN201310725050A CN103683513B CN 103683513 B CN103683513 B CN 103683513B CN 201310725050 A CN201310725050 A CN 201310725050A CN 103683513 B CN103683513 B CN 103683513B
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- 229910004682 ON-OFF Inorganic materials 0.000 claims abstract description 14
- 238000004891 communication Methods 0.000 claims abstract description 14
- 239000000203 mixture Substances 0.000 claims abstract description 13
- 229920002574 CR-39 Polymers 0.000 claims abstract description 4
- 230000001264 neutralization Effects 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 claims description 6
- 230000001360 synchronised Effects 0.000 claims description 6
- 230000004913 activation Effects 0.000 claims description 3
- 230000011664 signaling Effects 0.000 claims description 3
- 230000002618 waking Effects 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000001932 seasonal Effects 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
Classifications
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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
Abstract
The invention discloses a kind of low current grounding online information monitoring and control method and device, monitoring and control method comprises earth fault long-range automatic monitoring control method, remote handle monitoring and control method and GPRS module autoboot three methods; Device be arranged on remote monitoring center monitor controller, residual voltage on the line and zero-sequence current monitor controller are installed; 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, the universal component of each external interface composition and the GPRS ON-OFF control circuit that is made up of elements such as relays; The method and device make the data utilizing wide area monitoring technology to carry out in low current grounding online information Monitoring and Controlling process overstock, and GPRS communication utilization ratio problem is resolved.
Description
Technical field
The present invention relates to electric power system power distribution technical field, particularly 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 in a power distribution system.
Background technology
At present, the system for distribution network of power network of China is in non-effective earthing mode, comprise isolated neutral, neutral by arc extinction coil grounding and neutral point through high resistance grounding mode, wherein account for major part through grounding through arc mode, in the distribution network system through grounding through arc, due to the compensating action of 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 the difficult problem not yet obtaining solving very well.
Application number be 201220012928.8 " section with low-current ground faults tuning on-line method and system thereof " patent and application number be 201210027405.5 " low current grounding subregion segmentation tuning on-line method " patent, 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, GPRS is caused to communicate not smooth, there is mess code phenomenon and cause sensor line plate minimum system to crash, in addition because small area analysis single phase ground fault occurrence frequency has seasonal periodicity, a large amount of failure-free data occupies communication channel, expense is increased.
The invention reside in the defect overcome in above-mentioned technology, in small current neutral grounding system, provide a kind of channel utilization improved in wide area measurement technology, convenient reliable technical method and new device.
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 realize by with following technical proposals:
Described method comprises single phase ground fault long-range automatic monitoring control method, remote handle monitoring and control method and GPRS module autoboot three methods:
(1), long-range automatic monitoring control method
1) first utilize gps time synchronization module, time synchronized access is carried out to the residual voltage monitor controller in all wide area monitoring ranges and zero-sequence current monitor controller and adjusts;
2) when transmission line normally runs, residual voltage monitor controller and some zero-sequence current monitor controllers is utilized to gather residual voltage and the zero-sequence current phasor information of circuit, stored in buffer, and drive with GPS pulse per second (PPS), new data is covered legacy data;
3) when the residual voltage amplitude of circuit is more than or equal to the threshold value of setting, warning message is sent to monitor controller by residual voltage 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 current receiv module of monitor controller.
(2), remote handle monitoring and control method
1) first utilize gps time synchronization module, time synchronized access is carried out to the residual voltage monitor controller in all wide area monitoring ranges and zero-sequence current monitor controller and adjusts;
2) by artificial by the waking up of monitor controller, restart module, independent transmission, combination send, mass-sending zero-sequence current monitor controller command information, remote activation separately, one group, the GPRS module of zero-sequence current monitor controller in all wide area monitoring ranges, send zero-sequence current information; Staff is manually waken up by monitor controller, restart module, sends separately, combination sends, mass-sending zero-sequence current monitor controller restarting information, remote reboot separately, one group, zero-sequence current monitor controller in all wide area monitoring ranges.
(3), GPRS module autoboot method
1) electric current (voltage) the measuring point power-off control module of setting device generated a packet with confirmation every 10-20 minute cycle;
2) the GPRS communication module of monitor controller sends and confirms that packet is to all residual voltage monitor controllers in wide area monitoring range and zero-sequence current monitor controller;
3) residual voltage/zero-sequence current control relay control device receives information;
4) if information received in interval at 10-20 minute, reset timer and generate 10-20 minute interval interrupt, wait for next confirmation;
5) if information does not receive at 10-20 minute interval, residual voltage/zero-sequence current control relay control device is by Control GPRS power-off 2 second; Reset timer and generate 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: the monitor controller being arranged on remote monitoring center, installs residual voltage monitor controller on the line and zero-sequence current monitor controller, 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, each external interface composition universal component and a custom-designed GPRS ON-OFF control circuit, 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 composition, 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 inner through shell fragment S ground connection in GPRS ON-OFF control circuit.
Owing to have employed said method and device, the data 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 described in detail:
As seen from Figure 1, monitor controller of the present invention includes three parts, is namely arranged on the monitor controller of remote monitoring center, installs residual voltage monitor controller on the line and zero-sequence current monitor controller; The monitoring and control method that device adopts is:
One, long-range automatic monitoring control method
1) first utilize gps time synchronization module, time synchronized access is carried out to the residual voltage monitor controller in all wide area monitoring ranges and zero-sequence current monitor controller and adjusts.
2) when fault-free in circuit occurs, residual voltage monitor controller and each zero current monitor controller gather residual voltage and zero-sequence current phasor information, stored in buffer, and drive with GPS pulse per second (PPS), new data is covered legacy data, does 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, occurred single phase ground fault in this circuit and downstream leg thereof, residual voltage phasor warning message is sent to monitor controller by residual voltage monitor controller GPRS communication module.
4) after the voltage receiver module of monitor controller receives 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 current receiv module of monitor controller.
Two, remote handle monitoring and control method
For guaranteeing that the data of long-range automatic monitoring control method accurately arrive and the Information Monitoring of all residual voltages/zero-sequence current monitor controller in staff's real time inspection wide scope, set up remote handle monitoring and control method.
1) first utilize gps time synchronization module, time synchronized access is carried out to the residual voltage monitor controller in all wide area monitoring ranges and zero-sequence current monitor controller and adjusts.
2) staff is manually waken up by monitor controller, restarts module, independent transmission, combination send, mass-sending zero-sequence current monitor controller command information, remote activation separately, one group, the GPRS module of zero-sequence current monitor controller in all wide area monitoring ranges, send zero-sequence current information.Staff is manually waken up by monitor controller, restart module, sends separately, combination sends, mass-sending zero-sequence current monitor controller restarting information, remote reboot separately, one group, zero-sequence current monitor controller in 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, it is unobstructed that remote handle monitoring and control method GPRS module communicates, and 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 sends and confirms that packet is to all residual voltage monitor controllers in wide area monitoring range and zero-sequence current monitor controller.
3) residual voltage/zero-sequence current control relay control device receives information.
4) if information received in interval at 10-20 minute, reset timer and generate 10-20 minute interval interrupt, wait for next confirmation.
5) if information does not receive at 10-20 minute interval, residual voltage/zero-sequence current control relay control device, by Control GPRS power-off 2 second, resets timer and 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 of relevant external interface composition, these parts can be installed by power electronic equipment function and compound mode, in a device, in order to implement method of the present invention, special specialized designs GPRS ON-OFF control circuit part, its circuit structure and wiring 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 composition, 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 inner through shell fragment S ground connection in GPRS ON-OFF control circuit.
The electronic device that device of the present invention adopts and the whole selection standard part of material and GB material, take best fit as standard, be not described in detail at this.
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 GPRS module autoboot three methods:
(1), long-range automatic monitoring control method
1) first utilize gps time synchronization module, time synchronized access is carried out to the residual voltage monitor controller in all wide area monitoring ranges and zero-sequence current monitor controller and adjusts;
2) when transmission line normally runs, residual voltage monitor controller and some zero-sequence current monitor controllers is utilized to gather residual voltage and the zero-sequence current phasor information of circuit, stored in buffer, and drive with GPS pulse per second (PPS), new data is covered legacy data;
3) when the residual voltage amplitude of circuit is more than or equal to the threshold value of setting, warning message is sent to the monitor controller being arranged on remote monitoring center by residual voltage monitor controller;
4) after the monitor controller of remote monitoring center receives and reports to the police, by the GPRS communication module of the monitor controller of remote monitoring center, 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 current receiv module of the monitor controller of remote monitoring center;
(2), remote handle monitoring and control method
1) first utilize gps time synchronization module, time synchronized access is carried out to the residual voltage monitor controller in all wide area monitoring ranges and zero-sequence current monitor controller and adjusts;
2) by the waking up of the artificial monitor controller by remote monitoring center, restart module, independent transmission, combination send, mass-sending zero-sequence current monitor controller command information, remote activation separately, one group, the GPRS module of zero-sequence current monitor controller in all wide area monitoring ranges, send zero-sequence current information; Staff is manually waken up by the monitor controller of remote monitoring center, is restarted module, independent transmission, combination send, mass-sending zero-sequence current monitor controller restarting information, remote reboot separately, one group, zero-sequence current monitor controller in all wide area monitoring ranges;
(3), GPRS module autoboot method
1) electric current, the voltage measuring point power-off control module that set the monitor controller of remote monitoring center generated a packet with confirmation every 10-20 minute cycle;
2) the GPRS communication module of the monitor controller of remote monitoring center sends the packet of confirmation to all residual voltage monitor controllers in wide area monitoring range and zero-sequence current monitor controller;
3) the relay control die sinking block of residual voltage monitor controller and zero-sequence current monitor controller receives information;
4) if information received in interval at 10-20 minute, reset timer and generate 10-20 minute interval interrupt, wait for next confirmation;
5) if information does not receive at 10-20 minute interval, the relay control die sinking block of residual voltage monitor controller and zero-sequence current monitor controller is by Control GPRS power-off 2 second; Reset timer and generate 10-20 minute interval interrupt.
2. small current neutral grounding system earth fault online information monitoring and control method according to claim 1, wherein residual voltage monitor controller and zero-sequence current monitor controller are installed on the line, 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, the universal component of each external interface composition and a GPRS ON-OFF control circuit, 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 composition, 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 inner through shell fragment S ground connection in GPRS ON-OFF control circuit.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| 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 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| 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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| Publication Number | Publication Date |
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| CN103683513A CN103683513A (en) | 2014-03-26 |
| CN103683513B true CN103683513B (en) | 2015-10-21 |
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Families Citing this family (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 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102788926A (en) * | 2012-07-04 | 2012-11-21 | 河南理工大学 | Single-phase ground fault section positioning method of small-current ground system |
| CN102830327A (en) * | 2012-06-15 | 2012-12-19 | 湖南湘能智能电器股份有限公司 | Judging method and device of single-phase grounding fault line of small-current grounding system |
| CN103364692A (en) * | 2013-07-12 | 2013-10-23 | 桐乡市供电局 | Single-phase earth fault line selection method of power distribution network earthing system |
-
2013
- 2013-12-25 CN CN201310725050.1A patent/CN103683513B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102830327A (en) * | 2012-06-15 | 2012-12-19 | 湖南湘能智能电器股份有限公司 | Judging method and device of single-phase grounding fault line of small-current grounding system |
| CN102788926A (en) * | 2012-07-04 | 2012-11-21 | 河南理工大学 | Single-phase ground fault section positioning method of small-current ground system |
| CN103364692A (en) * | 2013-07-12 | 2013-10-23 | 桐乡市供电局 | Single-phase earth fault line selection method of power distribution network earthing system |
Non-Patent Citations (6)
| Title |
|---|
| Directional Ground-Fault Indicator for High-Resistance Grounded Systems;Thomas Baldwin et al.;《IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS》;20030430;第39卷(第2期);第325-332页 * |
| Fault line selection and location of neutral earthing via arc extinguishing coil system;Su Xiang-qian et al.;《2011 International Conference on Electrical and Control Engineering (ICECE)》;20111231;第2246-2249页 * |
| SINGLE-LINE-TO-GROUND FAULT TEST OF A 3-PHASE SUPERCONDUCTING FAULT CURRENT LIMITING REACTOR;S. Shimizu et al.;《IEEE TRANSACTIONS ON MAGNETICS》;19920131;第28卷(第1期);第442-445页 * |
| 中压配电网小电流故障在线定位系统的研究与实现;邓宏怀;《中国优秀硕士学位论文全文数据库 工程科技Ⅱ辑》;20130615;正文第51-55页 * |
| 小电流单相接地故障在线定位装置研究与实现;郑顾平等;《电力系统保护与控制》;20120416;第40卷(第8期);第135-139页 * |
| 配网自动化系统中小电流接地故障区段定位方法;郑顾平等;《中国电机工程学报》;20120505;第32卷(第13期);第103-109页 * |
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