CN202094707U - Monitoring device for power grid - Google Patents

Monitoring device for power grid Download PDF

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Publication number
CN202094707U
CN202094707U CN201120195985XU CN201120195985U CN202094707U CN 202094707 U CN202094707 U CN 202094707U CN 201120195985X U CN201120195985X U CN 201120195985XU CN 201120195985 U CN201120195985 U CN 201120195985U CN 202094707 U CN202094707 U CN 202094707U
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CN
China
Prior art keywords
module
monitoring device
electric network
network monitoring
control unit
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Expired - Fee Related
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CN201120195985XU
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Chinese (zh)
Inventor
朱发国
解东
武苗
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Aerospace Science and Industry Shenzhen Group Co Ltd
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Aerospace Science and Industry Shenzhen Group Co Ltd
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Priority to CN201120195985XU priority Critical patent/CN202094707U/en
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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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B90/00Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02B90/20Smart grids as enabling technology in buildings sector
    • 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
    • Y04S40/124Systems 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 wired telecommunication networks or data transmission busses

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  • Remote Monitoring And Control Of Power-Distribution Networks (AREA)

Abstract

The utility model provides a monitoring device for a power grid, comprising a master control unit, an AC acquisition module, a remote control output module, a telecommand module, a fault isolation module, a state analysis module, a power supply module, a state indication module and a communication module used for communication with a substation. The AC acquisition module, the remote control output module, the telecommand module, the fault isolation module, the state analysis module, the power supply module, the state indication module and the communication module are respectively electrically connected with the master control unit. Determination and isolation of a singlephase earth fault and an alternate short circuit fault can be realized by the technical scheme; monitoring of a switch state, and closing and opening of a brake can be effectively realized, through local convenience detection and temperature detection of a switch action contact; state detection of a lightning rod in a line can be realized; and comprehensive monitoring capability of a power grid with a complex structure is effectively increased.

Description

A kind of electric network monitoring device
Technical field
The utility model relates to power domain, relates in particular to a kind of electric network monitoring device that has.
Background technology
Entered since 21 century, development along with World Economics, energy-saving and emission-reduction, green energy resource, sustainable development become the focus that various countries pay close attention to, more become the core actuating force that power industry realizes development transition, the theory of intelligent grid is sprouted formation gradually, becomes the common selection of the following challenge of global power industry reply.At present, widespread consensus has been reached in China and countries in the world, build flexibly, cleaning, safety, economy, close friend's intelligent grid, and be the developing direction of following electrical network.
Intelligent grid mainly is made up of four parts, is respectively senior distribution operation, senior measurement system, senior transmission operation, senior asset management.In various piece, senior distribution operation is that equipment is than weak link at present, and we see electric network monitoring device, as the great development opportunity of intelligent integral ring main unit.Existing electric network monitoring device, in to the monitor procedure of electrical network, can only realize judging single phase ground fault or phase fault, under the situation of electric network composition more complicated, can not realize efficient real time monitoring electric network state by analyzing the electric current, the information of voltage that are detected.
The utility model content
The utility model is intended to solve electric network monitoring device in the prior art can not be realized technical problem to effective detection of complex electric network providing a kind of electric network monitoring device that can effectively realize the labyrinth electrical network is carried out comprehensive detection.
A kind of electric network monitoring device, comprise main control unit, be used to gather the interchange acquisition module of three-phase current, voltage, be used to realize the remote control output module of switch control, be used to gather the remote signal module of the position of the switch and status signal, the Fault Isolation module is used for the state analyzing module that failure judgement type and urgency level are rationally arranged the task of overhauling, power module, state indicating module and be used for communication module with the substation communication; Described interchange acquisition module, the remote control output module, remote signal module, the Fault Isolation module, state analyzing module, power module, state indicating module and communication module are electrically connected with described main control unit respectively.
Preferably, described power module comprises an alternating current input power supplying and AC/DC converting unit, and described alternating current input power supplying is given described main control unit power supply by described AC/DC converting unit.
Preferably, described main control unit adopts 32 DSP microcontroller chip, is furnished with RS232, RS485, Ethernet, CAN communication interface.
Preferably, described communication control module is the GPRS communicating circuit.
Preferably, described AC sampling module comprises a collection of simulant signal circuit and A/D modular converter, and described collection of simulant signal circuit, A/D modular converter and main control module are electrically connected successively.
Preferably, described remote signal module comprises switching value input signal Acquisition Circuit and optical coupling isolation circuit, described switching value input signal Acquisition Circuit, optical coupling isolation circuit and main control unit are electrically connected successively, and described switch input signal comprises on off state and position signalling.
Preferably, the power range of described alternating current input power supplying is 80V~400V.
Preferably, described electric network monitoring device comprises that also one gives the energy storage device of described main control unit power supply, and described energy storage device is electrically connected with described power module, and described power module can be given described energy storage device charging.
The above technical scheme, main control module by with the described acquisition module that exchanges, the remote control output module, remote signal module, the Fault Isolation module, state analyzing module, power module, state indicating module and communication module are electrically connected and control it and carry out corresponding work, not only can realize judgement and isolation to single phase ground fault and phase fault, and by local convenient the detection, the temperature detection of switch dynamic/static contact can effectively realize the monitoring of on off state and the divide-shut brake of fault loop, can also realize the state-detection to lightning rod in the circuit simultaneously, has effectively improved the comprehensively monitoring ability to the labyrinth electrical network.
Description of drawings
Fig. 1 is the structured flowchart of a kind of preferred embodiment of the utility model.
Embodiment
Clearer for technical problem, technical scheme and beneficial effect that the utility model is solved, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
As shown in Figure 1, the utility model provides a kind of electric network monitoring device, and this device comprises main control unit 4, exchanges acquisition module 6, remote control output module 7, remote signal module 8, Fault Isolation module 9, state analyzing module 10, power module, state indicating module 3 and be used for communication module 1 with the substation communication.
Described interchange acquisition module 6, remote control output module 7, remote signal module 8, Fault Isolation module 9, state analyzing module 10, power module, state indicating module 3 and communication module 1 are electrically connected with described main control unit 4 respectively.
Described interchange acquisition module 6 is used for gathering the analog voltage signal and the analog current signal of electrical network, comprise three-phase voltage, three-phase current and residual voltage, zero-sequence current, and with collect to such an extent that analog voltage signal, analog current signal send described main control unit 4 to, main control unit 4 collect carry out analysis-by-synthesis and calculating after these signals and will analyze after the result send the substation to by communication module 1.
Described interchange acquisition module 6 preferably includes a collection of simulant signal circuit and A/D modular converter, described collection of simulant signal circuit, A/D modular converter and main control module are electrically connected successively, described collection of simulant signal circuit is used for gathering three-phase voltage, three line currents and residual voltage, the zero-sequence current of distribution line, and carry out Signal Spacing and conversion by secondary CT, form AD by signal conditioning circuit and gather acceptable voltage or current signal, and send this current signal to main control unit 4 by the A/D modular converter.
Described remote signal module 8 is used for gathering the status signal and the position signalling of each switch of electrical network, preferably, described remote signal module 8 comprises a switching value input signal Acquisition Circuit and an optical coupling isolation circuit, and described switching value input signal Acquisition Circuit, optical coupling isolation circuit and main control unit 4 are electrically connected successively.Described switching value input signal Acquisition Circuit is used for the status signal and the position signalling of Acquisition Circuit switch, the switching value input signal converts main control unit 4 acceptable signals to through optical coupling isolation circuit, main control unit 4 scans these status signals then, finishes collecting work and carries out corresponding software processes process.
Described remote control output module 7 can preferably adopt actuating of relay control circuit, after main control unit 4 receives the control command of substation, converts control command the signal of control relay actuation coil to, the closing of final controllable switch loop, separating brake.
Described Fault Isolation module 9 adopts the preferred DSP of employing high speed processing chip, can on same mainboard, peg graft or weld different functional modules, described functional module is optional gets existing functional module, as: can realize temperature detection, state-detection, the module of functions such as pressure detecting, described fault processing module can be according to the electric current of institute's collection analysis, voltage signal is judged single phase ground fault or phase fault and is carried out corresponding isolation processing, can realize simultaneously detecting by the part is convenient, draw the switch insulation state, and can realize the branch of fault loop, closing operation, and can realize by temperature detection to the switch dynamic/static contact, determine the running status function of switch, can also realize state-detection further to lightning arrester in the circuit, realization is to the comprehensive detection of electrical network, and the comprehensively monitoring ability to electrical network with responsible structure that effectively improves, further improved power distribution efficiency.
Described state analyzing module 10, be used to judge the fault type of electrical network and the urgency level of fault, rationally arrange the repair time, for example can intuitively show the fault type of this electric network monitoring device and emergency whether, so that the maintenance personal rationally makes maintenance project by a display unit.
State indicating module 3 is used to show whether electric network monitoring device is in running status, and this state indicating module 3 is preferably an indicator light, when this indicator light is bright, shows that electric network monitoring device is carrying out work; When this indicator light goes out, show that electric network monitoring device quits work.
Described main control unit 4 is used to finish the collection of analog signals, the collection of switching value input signal, and by carrying out the work of may command corresponding module after the communication with the substation, this unit preferably adopts 32 DSP position microcontroller chip, this chip is furnished with RS232, RS485, Ethernet, CAN communication interface, it is strong that this chip has storage capacity, the characteristics that processing speed is fast.Possess special-purpose RS232 debugging interface simultaneously, be convenient to a distant place/local debugging maintenance.This chip can be selected public network, private network, various communication modes such as wired, wireless flexibly for use simultaneously; Adopt normal data storage and standard communication protocol, be convenient to the link with main website, multiple communication protocol of flexible configuration and master station communication, have information transmit fast, reliable communications, advantage such as antijamming capability is strong.The described communication module 1 preferred GPRS communicating circuit that adopts has effectively improved communication efficiency.Described communication control module has a sim card slot, is used to SIM card is installed so that communicate with main website.
Described power module comprises an alternating current input power supplying 5 and AC/DC converting unit, and described alternating current input power supplying 5 is given described main control unit power supply by described AC/DC converting unit; Described AC power adopts the power supply design of wide-voltage range, input power source voltage scope is 80V~400V, directly get at the operation circuit, preferably this electric network monitoring device also comprises an energy storage device 2, the input power supply can be given described energy storage device 2 chargings through the AC/DC unit, under the situation of working line outage, can give described electric network monitoring device power supply by energy storage device 2, make it can continuous service more than 14 hours.
The above only is preferred embodiment of the present utility model; not in order to restriction the utility model; all any modifications of within spirit of the present utility model and principle, being done, be equal to and replace and improvement etc., all should be included within the protection range of the present utility model.

Claims (8)

1. electric network monitoring device, it is characterized in that, comprise main control unit, be used to gather the interchange acquisition module of three-phase current, voltage, be used to realize the remote control output module of switch control, be used to gather the remote signal module of the position of the switch and status signal, the Fault Isolation module, be used for failure judgement type and urgency level and rationally arrange the state analyzing module of the task of overhauling, power module, state indicating module and be used for communication module with the substation communication;
Described interchange acquisition module, the remote control output module, remote signal module, the Fault Isolation module, state analyzing module, power module, state indicating module and communication module are electrically connected with described main control unit respectively.
2. electric network monitoring device according to claim 1 is characterized in that, described power module comprises an alternating current input power supplying and AC/DC converting unit, and described alternating current input power supplying is given described main control unit power supply by described AC/DC converting unit.
3. electric network monitoring device according to claim 1 is characterized in that, described main control unit adopts 32 DSP microcontroller chip, is furnished with RS232, RS485, Ethernet, CAN communication interface.
4. electric network monitoring device according to claim 1 is characterized in that, described communication control module is the GPRS communicating circuit.
5. electric network monitoring device according to claim 1 is characterized in that, described interchange acquisition module comprises a collection of simulant signal circuit and A/D modular converter, and described collection of simulant signal circuit, A/D modular converter and main control module are electrically connected successively.
6. electric network monitoring device according to claim 1, it is characterized in that, described remote signal module comprises switching value input signal Acquisition Circuit and optical coupling isolation circuit, described switching value input signal Acquisition Circuit, optical coupling isolation circuit and main control unit are electrically connected successively, and described switch input signal comprises on off state and position signalling.
7. electric network monitoring device according to claim 2 is characterized in that, the voltage range of described alternating current input power supplying is 80V~400V.
8. electric network monitoring device according to claim 1, it is characterized in that, described electric network monitoring device comprises that also one gives the energy storage device of described main control unit power supply, and described energy storage device is electrically connected with described power module, and described power module can be given described energy storage device charging.
CN201120195985XU 2011-06-13 2011-06-13 Monitoring device for power grid Expired - Fee Related CN202094707U (en)

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CN201120195985XU CN202094707U (en) 2011-06-13 2011-06-13 Monitoring device for power grid

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Application Number Priority Date Filing Date Title
CN201120195985XU CN202094707U (en) 2011-06-13 2011-06-13 Monitoring device for power grid

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103297478A (en) * 2012-03-05 2013-09-11 辽宁省电力有限公司抚顺供电公司 Electric power automation wireless channel transparent transmitting set
CN104020393A (en) * 2014-04-15 2014-09-03 国家电网公司 Single-phase grounding short-circuit fault positioning method of electrical network
CN105375630A (en) * 2015-11-25 2016-03-02 苏州科技学院 Intelligent distribution monitoring system for green building
CN108417419A (en) * 2018-03-13 2018-08-17 广东里田电力工业有限公司 A kind of divide-shut brake indicating means with indication signal

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103297478A (en) * 2012-03-05 2013-09-11 辽宁省电力有限公司抚顺供电公司 Electric power automation wireless channel transparent transmitting set
CN104020393A (en) * 2014-04-15 2014-09-03 国家电网公司 Single-phase grounding short-circuit fault positioning method of electrical network
CN104020393B (en) * 2014-04-15 2017-01-04 国家电网公司 A kind of with electrical network one-phase short-circuit current Fault Locating Method
CN105375630A (en) * 2015-11-25 2016-03-02 苏州科技学院 Intelligent distribution monitoring system for green building
CN108417419A (en) * 2018-03-13 2018-08-17 广东里田电力工业有限公司 A kind of divide-shut brake indicating means with indication signal

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C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20111228

Termination date: 20200613

CF01 Termination of patent right due to non-payment of annual fee