CN103592566A - Wireless communication based power distribution network distributed online monitoring and fault positioning system - Google Patents

Wireless communication based power distribution network distributed online monitoring and fault positioning system Download PDF

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Publication number
CN103592566A
CN103592566A CN201310390898.3A CN201310390898A CN103592566A CN 103592566 A CN103592566 A CN 103592566A CN 201310390898 A CN201310390898 A CN 201310390898A CN 103592566 A CN103592566 A CN 103592566A
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measurement mechanism
distribution network
module
node measurement
power distribution
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吴俊勇
王晨
郝亮亮
图尔荪.依明
陈占锋
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Beijing Jiaotong University
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Beijing Jiaotong University
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    • 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
    • Y04S10/00Systems supporting electrical power generation, transmission or distribution
    • Y04S10/50Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
    • Y04S10/52Outage or fault management, e.g. fault detection or location

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  • Locating Faults (AREA)

Abstract

The invention provides a wireless communication based power distribution network distributed online monitoring and fault positioning system, which comprises circuit measuring units and a power distribution network monitoring master station, wherein the circuit measuring unit comprises a main node measuring device and two sub-node measuring devices, the main node measuring device is arranged on a B-phase of three-phase alternating current, the two sub-node measuring devices are arranged on an A-phase and a C-phase of the three-phase alternating current respectively, and the power distribution network monitoring master station is arranged in a substation. The online fault positioning system is rather flexible in installation mode, and the installation number of the circuit measuring unit can be determined according to actual needs of users. The online fault positioning system can monitor the operating states of main circuits of a power distribution network in an on-line manner, dispatch load balancing of the power distribution network scientifically, and position a fault section of the power distribution network quickly, thereby prolonging the service life of equipment, carrying out lifecycle management on the main circuits and a transformer, reducing the power failure time of users, improving the power supply reliability for the users, improving the work efficiency of power supply enterprises, and reducing manpower, material resources and financial resources consumed by fault processing.

Description

Power distribution network distributed on line monitoring and fault location system based on radio communication
Technical field
The invention belongs to power system automatic field, relate to on-line monitoring and the Fault-Locating Test field of system for distribution network of power, particularly little electric current single-phase fault ground connection locating device and system.
Background technology
The power distribution network of China is except transformer station, any electric current, voltage measuring apparatus are not installed on circuit, every circuit and main running state of transformer are all unknown, therefore monitor the running status of power distribution network main line and transformer to changing the power distribution network method of operation, balanced line load, optimal route trend, extension device serviceable life, has very important impact to problems such as equipment life period managements.
In addition, China's power distribution network generally adopts small current neutral grounding system, complex structure, singlephase earth fault is modal fault in small current neutral grounding system, because fault current is very little, therefore its fault detect, orientation problem is one of electric system difficult problem urgently to be resolved hurrily always, therefore in this field Efforts To Develop research work, has important and far-reaching meaning.
During small current neutral grounding system generation singlephase earth fault, healthy phases voltage-to-ground raises, if while there is intermittent arc grounding, can cause resonance overvoltage, may cause system insulation to be on the hazard, and causes serious short circuit accident.Therefore should find as early as possible faulty line, fix a breakdown as early as possible.In order to determine faulty line, traditional method is to adopt the artificial method that circuit is operated a switch one by one to judge which bar circuit breaks down.When faulty line is disconnected, earth fault indication will disappear, and this just can determine faulty line.So for this traditional artificial selection method waste of manpower of power supply department, reduced power supply reliability and work efficiency, affected economic benefit; This method of user is increased to power failure probability, cause unnecessary economic loss.
Power distribution network distributed on line monitoring and fault location system based on radio communication refer to when single-phase grounding fault has appearred in power distribution network, do not need or only need the artificial line walking seldom measured, and artificial positioning action can find a kind of new system of trouble spot.The content of this system comprises automatic trouble diagnosis, localization of fault, data recording, analysis, its target is the running status of each circuit of on-line monitoring power distribution network, the scheduling power distribution network balancing the load of science, the serviceable life of extension device, main line and transformer are carried out to life cycle management, reduce customer outage hours, improve customer power supply reliability, improve power supply enterprise's work efficiency, reduce the manpower, material resources and financial resources that fault handling produces.
Summary of the invention
In order to solve above-mentioned technical matters, realize the technical measures of above-mentioned purpose: the invention provides a kind of power distribution network distributed on line monitoring and fault location system based on radio communication, can each main line of on-line monitoring power distribution network and the running status of transformer, the serviceable life of the scheduling power distribution network balancing the load of science, optimal route trend, extension device and locate fast distribution network failure section.
Technical scheme of the present invention:
Power distribution network distributed on line monitoring based on radio communication and fault location system comprise route survey unit, two parts of distribution network monitoring main website.
Described route survey unit comprises host node measurement mechanism, the first child node measurement mechanism and the second child node measurement mechanism.
Described distribution network monitoring main website is installed in power distribution network transformer station, for realizing the functions such as the reception of teledata, the processing that issues control command, historical data, real time data, fault judgement, alarm message reminding, picture disply.
The B that described host node measurement mechanism is installed in three-phase alternating current goes up mutually, comprises circuit core processor (ARM), line current measurement module, GPS the whole network clocked flip module, ZIGBEE near radio group-net communication module, data storage SD card, GPRS remote communication module.
The A phase that the first described child node measurement mechanism and the second child node measurement mechanism are installed in respectively three-phase alternating current goes up mutually with C, comprises core processor (ARM), line current measurement module, GPS the whole network clocked flip module, ZIGBEE near radio group-net communication module, data storage SD card.
Its inner described host node measurement mechanism of described route survey unit is connected by described ZIGBEE near radio networking module wireless networking with the second child node measurement mechanism with the first described child node measurement mechanism, for the first child node measurement mechanism described in described host node measurement mechanism wireless receiving and the second child node measurement mechanism, upload A phase and the C phase amplitude of 50 current cycles and the temporal information of phase data information and these data in each second, and the downward Query Information of the host node measurement mechanism described in the first described child node measurement mechanism and the second child node measurement mechanism energy wireless receiving.
Its inner described core processor (ARM) of described host node measurement mechanism is connected with described line current measurement module, described GPS the whole network clocked flip module, ZIGBEE near radio networking module, data storage SD card, GPRS remote communication module respectively; Described core processor (ARM) is connected with described line current measurement module, for controlling described line current measurement module image data information, and data message is analyzed, and draws localization of fault information; Described core processor (ARM) is connected with described GPS the whole network clocked flip module, for controlling the synchronous acquisition of power distribution network current data information, and be current data information match time of these collections, to reach the object of the synchronous acquisition of all line current data messages of power distribution network; Described core processor (ARM) is connected with described ZIGBEE near radio group-net communication module, and the host node measurement mechanism described in the current data information gathering for the described child node measurement mechanism of ZIGBEE near radio group-net communication module reception described in controlling and temporal information and control send is inquired about the Information Monitoring of described child node measurement mechanism; Described core processor (ARM) is connected with described data storage SD card, for the line current data message of the data storage SD card collection described in control store and the temporal information that described GPS the whole network clocked flip module obtains, so that server calling these current data information and temporal information; Described core processor (ARM) is connected with described GPRS remote communication module, the temporal information that the line current data message storing for the data storage SD card of controlling described in sending and described GPS the whole network clocked flip module obtain is to distribution network monitoring main website, so that the post analysis of distribution network monitoring main website to these current data information and temporal information, locate online the fault section of power distribution network.
Its inner described core processor (ARM) of the first described child node measurement mechanism and the second child node measurement mechanism is connected with described line current measurement module, described GPS the whole network clocked flip module, ZIGBEE near radio networking module, data storage SD card respectively; Described core processor (ARM) is connected with described line current measurement module, for controlling described line current measurement module image data information, and data message is analyzed, and draws localization of fault information; Described core processor (ARM) is connected with described GPS the whole network clocked flip module, for controlling the synchronous acquisition of power distribution network current data information, and be current data information match time of these collections, to reach the object of the synchronous acquisition of all line current data messages of power distribution network; Described core processor (ARM) is connected with described ZIGBEE near radio group-net communication module, for controlling described ZIGBEE near radio group-net communication module, sends the Information Monitoring that described child node measurement mechanism gathers the described child node measurement mechanism of the described host node measurement mechanism inquiry of current data information and temporal information and control reception; Described core processor (ARM) is connected with described data storage SD card, for the line current data message of the data storage SD card collection described in control store and the temporal information that described GPS the whole network clocked flip module obtains, so that distribution network monitoring main website is to the inquiry of these current data information and temporal information with call.
Accompanying drawing is described
Fig. 1 is topological diagram of the present invention
Fig. 2 is the schematic diagram of host node measurement mechanism
Fig. 3 is the schematic diagram of child node measurement mechanism
Fig. 4 is the scheme of installation of route survey of the present invention unit
Embodiment
Below with reference to accompanying drawing, the preferred embodiments of the present invention are described.
A kind of new power distribution network distributed on line monitoring and fault location system based on radio communication that the present invention proposes, as shown in Figure 1: by route survey unit, distribution network monitoring main website two parts, formed.
Wherein route survey unit is arranged on each the crucial measuring point place on distribution network line as shown in Figure 4, be responsible for gathering the current information of distribution network line, distribution network monitoring main website is arranged in transformer station, have public network fixed ip address, the host node measurement mechanism at each crucial measuring point place is all furnished with between GPRS remote radio communication ,Yu distribution network monitoring main website and carries out remote radio communication by GPRS network.
The host node measurement mechanism at each crucial measuring point place and child node measurement mechanism are established in all, the standard second pulse that the gps system of usining sends is as power distribution network synchronized sampling trigger pip, the synchronized sampling of startup to voltage and current signal, calculates respectively the phase angle of each crucial measuring point place voltage and current signal with respect to the same time of GPS.The time error receiving due to the GPS module of different regions is less than 1us, thus with the rising edge of GPS standard second pulse as trigger pip, can guarantee the synchronized sampling in the whole network strange land of current/voltage.
Power distribution network distributed on line monitoring based on radio communication and fault location system are when work, the host node measurement mechanism at each crucial measuring point place all passes through GPRS long-distance radio communication module and keeps being connected with distribution network monitoring main website, GPS the whole network clocked flip module of the host node measurement mechanism at each crucial measuring point place and child node measurement mechanism is receiving the standard second pulse signal arrival sampling of starting current voltage signal constantly, and utilize Fourier algorithm that the instantaneous value gathering in one-period is calculated, obtain amplitude and the phase information of circuit zero sequence current signal, then these Information Monitorings and corresponding markers first by ZIGBEE near radio group-net communication module upload to host node measurement mechanism again the GPRS long-distance radio communication module by host node measurement mechanism with the interval of every ten minutes, send distribution network monitoring main website to, and these information are deposited in data storage SD card and give over to backup, facilitate the inquiry of distribution network monitoring main website.Distribution network monitoring main website receives after these data messages, then from distribution automation system, obtains the substation transformer neutral point voltage under the same time.Distribution network monitoring main website obtains after line current and transformer substation voltage information, voltage and current information is in the same time compared, just can obtain the phase differential of the two, and then judgement short trouble is on which section, distribution network monitoring main website carries out classified finishing by the data of reception simultaneously, and show with the form of picture, facilitate managerial personnel to operate.
Once detecting current signal instantaneous value, current measurement module surpasses the threshold value of setting, just immediately the time of the amplitude of this periodic current and phase information and correspondence is first uploaded to host node measurement mechanism by ZIGBEE near radio group-net communication module and by the GPRS long-distance radio communication module of host node measurement mechanism, send distribution network monitoring main website to again, select faulty line, location fault section.
Master station also can be inquired about the current information of any time circuit, when master station sends to the host node of route survey unit the order that will inquire about the moment by GPRS long-distance radio communication module, circuit host node is communicated by letter with child node by ZIGBEE near radio group-net communication module, from the data storage SD card of child node device, read the current information in the corresponding moment, and corresponding current information constantly is first sent to host node by ZIGBEE near radio group-net communication module, then host node uploads to monitoring main website these data by GPRS long-distance radio communication module again, to realize two-way communication, strengthened the scalability of device.
Power distribution network distributed on line monitoring based on radio communication and fault location system can be determined fault section after fault enters stable state, velocity ratio is more satisfactory, but host node measurement mechanism and the child node measurement mechanism of some need to be installed in power distribution network, precision and the host node measurement mechanism of definite section, the installation number of child node measurement mechanism is relevant, if wish, fault section is determined in a less scope, the installation number needing is larger, if only need to determine the important branch of faulty line, only need be arranged on certain several crucial measuring points place, after having determined fault section in a big way, can utilize traveling wave method, the supplementary meanss such as impedance method are further dwindled the scope of fault section, form is more flexible, can determine according to user's actual demand the concrete installation number of host node measurement mechanism and child node measurement mechanism.
Above-described is only preferred embodiment of the present invention, certainly can not limit interest field of the present invention with this, although the specific embodiment of the present invention is had been described in detail with reference to preferred embodiment, the those of ordinary skill in described field is to be understood that, still can modify to the specific embodiment of the present invention, therefore the equivalent variations of doing according to the claims in the present invention, still belongs to the scope that the present invention is contained.

Claims (8)

1. power distribution network distributed on line monitoring and the fault location system based on radio communication, is characterized in that comprising route survey unit, two parts of distribution network monitoring main website.
2. route survey unit comprises host node measurement mechanism, the first child node measurement mechanism and the second child node measurement mechanism according to claim 1.
3. distribution network monitoring main website in route survey unit is installed in power distribution network transformer station according to claim 2, for realizing the functions such as the reception of teledata, the processing that issues control command, historical data, real time data, fault judgement, alarm message reminding, picture disply.
4. host node measurement mechanism according to claim 3, is characterized in that:
The B that is installed in three-phase alternating current goes up mutually, comprises circuit core processor (ARM), line current measurement module, GPS the whole network clocked flip module, ZIGBEE near radio group-net communication module, data storage SD card, GPRS remote communication module.
5. the first child node measurement mechanism according to claim 4 and the second child node measurement mechanism is characterized in that:
The A phase that both are installed in respectively three-phase alternating current goes up mutually with C, comprises core processor (ARM), line current measurement module, GPS the whole network clocked flip module, ZIGBEE near radio group-net communication module, data storage SD card; And both are connected with described host node measurement mechanism, for the first child node measurement mechanism described in described host node measurement mechanism wireless receiving and the second child node measurement mechanism, upload A phase and the C phase amplitude of 50 current cycles and the temporal information of phase data information and these data in each second, and the downward Query Information of the host node measurement mechanism described in the first described child node measurement mechanism and the second child node measurement mechanism energy wireless receiving.
6. route survey according to claim 5 unit, is characterized in that:
Its inner described host node measurement mechanism is connected by described ZIGBEE near radio networking module wireless networking with the second child node measurement mechanism with the first described child node measurement mechanism.
7. host node measurement mechanism according to claim 6, is characterized in that:
Its inner described core processor (ARM) is connected with described line current measurement module, described GPS the whole network clocked flip module, ZIGBEE near radio networking module, data storage SD card, GPRS remote communication module respectively; Described core processor (ARM) is connected with described line current measurement module, for controlling described line current measurement module image data information, and data message is analyzed, and draws localization of fault information; Described core processor (ARM) is connected with described GPS the whole network clocked flip module, for controlling the synchronous acquisition of power distribution network current data information, and be current data information match time of these collections, to reach the object of the synchronous acquisition of all line current data messages of power distribution network; Described core processor (ARM) is connected with described ZIGBEE near radio group-net communication module, and the host node measurement mechanism described in the current data information gathering for the described child node measurement mechanism of ZIGBEE near radio group-net communication module reception described in controlling and temporal information and control send is inquired about the Information Monitoring of described child node measurement mechanism; Described core processor (ARM) is connected with described data storage SD card, for the line current data message of the data storage SD card collection described in control store and the temporal information that described GPS the whole network clocked flip module obtains, so that server calling these current data information and temporal information; Described core processor (ARM) is connected with described GPRS remote communication module, the temporal information that the line current data message storing for the data storage SD card of controlling described in sending and described GPS the whole network clocked flip module obtain is to distribution network monitoring main website, so that the post analysis of distribution network monitoring main website to these current data information and temporal information, locate online the fault section of power distribution network.
8. the first child node measurement mechanism according to claim 7 and the second child node measurement mechanism, is characterized in that:
Its inner described core processor (ARM) is connected with described line current measurement module, described GPS the whole network clocked flip module, ZIGBEE near radio networking module, data storage SD card respectively; Described core processor (ARM) is connected with described line current measurement module, for controlling described line current measurement module image data information, and data message is analyzed, and draws localization of fault information; Described core processor (ARM) is connected with described GPS the whole network clocked flip module, for controlling the synchronous acquisition of power distribution network current data information, and be current data information match time of these collections, to reach the object of the synchronous acquisition of all line current data messages of power distribution network; Described core processor (ARM) is connected with described ZIGBEE near radio group-net communication module, for controlling described ZIGBEE near radio group-net communication module, sends the Information Monitoring that described child node measurement mechanism gathers the described child node measurement mechanism of the described host node measurement mechanism inquiry of current data information and temporal information and control reception; Described core processor (ARM) is connected with described data storage SD card, for the line current data message of the data storage SD card collection described in control store and the temporal information that described GPS the whole network clocked flip module obtains, so that distribution network monitoring main website calling these current data information and temporal information.
CN201310390898.3A 2013-09-02 2013-09-02 Wireless communication based power distribution network distributed online monitoring and fault positioning system Pending CN103592566A (en)

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CN104104147A (en) * 2014-06-20 2014-10-15 国家电网公司 10kV line fault positioning system
CN104135740A (en) * 2014-07-28 2014-11-05 国家电网公司 Distribution automation wireless communication fault locating method
CN104330701A (en) * 2014-11-06 2015-02-04 扬州森源电气有限公司 Single-phase fault monitoring wireless system for community and monitoring method thereof
CN104460606A (en) * 2014-11-14 2015-03-25 上海理工大学 Remote monitoring system and method for distribution power transformer
CN105738768A (en) * 2016-03-01 2016-07-06 东南大学 Method and device for monitoring residual current and terminal voltage on line and positioning faults
CN105954649A (en) * 2016-06-27 2016-09-21 国家电网公司 Distribution line fault positioning apparatus
CN106017560A (en) * 2016-06-14 2016-10-12 上海君世电气科技有限公司 Cable well state comprehensive monitoring and early warning system
CN106291196A (en) * 2016-08-31 2017-01-04 徐洪恩 A kind of based on electric network fault accurate information analyzing and alarming system
CN106506377A (en) * 2016-11-15 2017-03-15 国网黑龙江省电力有限公司信息通信公司 Method for routing foundation for dispatching of power netwoks
CN106841920A (en) * 2017-02-07 2017-06-13 上海萌烨电力科技有限公司 Distribution line real time fail judges and Fault Locating Method
CN106908694A (en) * 2017-03-09 2017-06-30 东北电力大学 A kind of distribution line failure indicator and its detection method based on IEC61850
CN107064743A (en) * 2017-04-13 2017-08-18 深圳市特力康科技有限公司 Power distribution network transient state ripple failure tracking method and device based on cloud analysis with identification
CN108508261A (en) * 2018-05-30 2018-09-07 广东电网有限责任公司 A kind of long distance overhead transmission line both end voltage measuring device
CN110082637A (en) * 2019-05-10 2019-08-02 贵州电网有限责任公司 A kind of power distribution network operation data monitoring system and method based on synchronous vector
CN116707142A (en) * 2023-07-31 2023-09-05 济南铁路信息技术有限公司 Railway signal power supply remote monitoring system based on wireless communication

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CN104104147A (en) * 2014-06-20 2014-10-15 国家电网公司 10kV line fault positioning system
CN104135740A (en) * 2014-07-28 2014-11-05 国家电网公司 Distribution automation wireless communication fault locating method
CN104135740B (en) * 2014-07-28 2017-10-10 国家电网公司 The method of power distribution automation lradio communication failure positioning
CN104330701B (en) * 2014-11-06 2017-05-24 扬州森源电气有限公司 Single-phase fault monitoring wireless system for community and monitoring method thereof
CN104330701A (en) * 2014-11-06 2015-02-04 扬州森源电气有限公司 Single-phase fault monitoring wireless system for community and monitoring method thereof
CN104460606A (en) * 2014-11-14 2015-03-25 上海理工大学 Remote monitoring system and method for distribution power transformer
CN104460606B (en) * 2014-11-14 2018-05-01 上海理工大学 Electricity distribution power transformator remote monitoring system and method
CN105738768A (en) * 2016-03-01 2016-07-06 东南大学 Method and device for monitoring residual current and terminal voltage on line and positioning faults
CN106017560A (en) * 2016-06-14 2016-10-12 上海君世电气科技有限公司 Cable well state comprehensive monitoring and early warning system
CN105954649A (en) * 2016-06-27 2016-09-21 国家电网公司 Distribution line fault positioning apparatus
CN106291196A (en) * 2016-08-31 2017-01-04 徐洪恩 A kind of based on electric network fault accurate information analyzing and alarming system
CN106506377A (en) * 2016-11-15 2017-03-15 国网黑龙江省电力有限公司信息通信公司 Method for routing foundation for dispatching of power netwoks
CN106506377B (en) * 2016-11-15 2019-07-26 国网黑龙江省电力有限公司信息通信公司 Method for routing foundation for dispatching of power netwoks
CN106841920A (en) * 2017-02-07 2017-06-13 上海萌烨电力科技有限公司 Distribution line real time fail judges and Fault Locating Method
CN106841920B (en) * 2017-02-07 2019-07-26 上海萌烨电力科技有限公司 The judgement of distribution line real time fail and Fault Locating Method
CN106908694B (en) * 2017-03-09 2019-06-11 东北电力大学 A kind of distribution line failure indicator and its detection method based on IEC61850
CN106908694A (en) * 2017-03-09 2017-06-30 东北电力大学 A kind of distribution line failure indicator and its detection method based on IEC61850
CN107064743A (en) * 2017-04-13 2017-08-18 深圳市特力康科技有限公司 Power distribution network transient state ripple failure tracking method and device based on cloud analysis with identification
CN108508261A (en) * 2018-05-30 2018-09-07 广东电网有限责任公司 A kind of long distance overhead transmission line both end voltage measuring device
CN110082637A (en) * 2019-05-10 2019-08-02 贵州电网有限责任公司 A kind of power distribution network operation data monitoring system and method based on synchronous vector
CN116707142A (en) * 2023-07-31 2023-09-05 济南铁路信息技术有限公司 Railway signal power supply remote monitoring system based on wireless communication
CN116707142B (en) * 2023-07-31 2023-10-24 济南铁路信息技术有限公司 Railway signal power supply remote monitoring system based on wireless communication

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Application publication date: 20140219