CN203423539U - Low-voltage power grid load and leak current integrated monitoring device - Google Patents

Low-voltage power grid load and leak current integrated monitoring device Download PDF

Info

Publication number
CN203423539U
CN203423539U CN201320577390.XU CN201320577390U CN203423539U CN 203423539 U CN203423539 U CN 203423539U CN 201320577390 U CN201320577390 U CN 201320577390U CN 203423539 U CN203423539 U CN 203423539U
Authority
CN
China
Prior art keywords
controller
data
wireless communication
monitoring
integrated monitoring
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201320577390.XU
Other languages
Chinese (zh)
Inventor
陈甲全
戴新文
高龙
邱振敏
卢庆平
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
State Grid Corp of China SGCC
State Grid Fujian Electric Power Co Ltd
Zhangping Power Supply Co of State Grid Fujian Electric Power Co Ltd
Original Assignee
State Grid Corp of China SGCC
State Grid Fujian Electric Power Co Ltd
Zhangping Power Supply Co of State Grid Fujian Electric Power Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by State Grid Corp of China SGCC, State Grid Fujian Electric Power Co Ltd, Zhangping Power Supply Co of State Grid Fujian Electric Power Co Ltd filed Critical State Grid Corp of China SGCC
Priority to CN201320577390.XU priority Critical patent/CN203423539U/en
Application granted granted Critical
Publication of CN203423539U publication Critical patent/CN203423539U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/7853
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04SSYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S40/00Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
    • Y04S40/12Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
    • Y04S40/126Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wireless data transmission

Abstract

The utility model discloses a low-voltage power grid load and leak current integrated monitoring device, comprising intelligent circuit breakers and monitoring terminals. Each of the monitoring terminals comprises a first controller and a first power supply, wherein the first controller is in signal connection with the corresponding intelligent circuit breaker and a first wireless communication module. The integrated monitoring device further comprises a data concentrator and a monitoring center. The data concentrator comprises a second controller and a second power supply. The second controller is in signal connection with a first GPRS interface and a second wireless communication module that cooperates with the first wireless communication modules. The monitoring center is provided with a second GPRS interface that cooperates with the first GPRS interface. The integrated monitoring device is advantaged in that the data concentrator collects data and then forwards the data to the monitoring center uniformly so that the GPRS transmission frequency is low and the cost is reduced; and the wireless collection of the data of the monitoring terminals by the data concentrator is benefited, the arrangement places of the monitoring terminals are subjected to little influence, and the arrangement of the monitoring terminals is facilitated.

Description

A kind of low voltage electric network load and leakage current integrated monitoring apparatus
Technical field
The utility model relates to system for distribution network of power field, is specifically related to a kind of low voltage electric network load and leakage current integrated monitoring apparatus.
Background technology
For a long time, the load of the power end of low voltage electric network and (doing) circuit and leakage current are always in cannot remote monitoring and state of a control.The generation overload of 0.4kV low-voltage circuit or leakage current cause after air switch tripping operation after surpassing set point, cannot automatically record and report the information such as trip reason and time, cause failure reason analysis to overcome a difficulty; And cannot carry out remote operation air switch and carry out fast the isolation of fault and restore electricity.At present desirable way is at low voltage electric network side installing leakage current protective device (being called for short " leak and protect "), and installing pattern is divided into that Zong Bao, branch fails to report, end leaks and protects.
Yet long-term facts have proved, existing Installation Modes cannot allow Lou to be protected and normally comes into operation.Reason has the following aspects: (1) awareness of safety is not in place, and electricity consumption client is rural area client particularly, for the effect of leak protecting, knows little about it, and the phychology that few investment can electricity consumption affects it to leaking the use of protecting; (2) management of power use does not catch up with, and end leak to be protected and to be installed in client, if certain client does not install and protects with Louing and cause that branch leaks and protect or total while protecting tripping operation, is difficult to investigate concrete generation electric leakage client, causes that to rush to repair workload large.Meanwhile, by installing, leak and protect long-range visual supervisory control and the management being also difficult to low voltage electric network load and leakage current, be difficult to improve the computer-aided traffic control level of low voltage electric network load and leakage current.
Utility model content
The utility model provides a kind of low voltage electric network load and leakage current integrated monitoring apparatus, and it has overcome background technology Medial & Low Voltage Power Network earth leakage protective and has been difficult to management, the deficiency that automatization level is not high.
The technical scheme adopting that the utility model solves its technical problem is:
A kind of low voltage electric network load and leakage current integrated monitoring apparatus, comprise intelligent breaker (1) and monitor terminal (2), this monitor terminal (2) at least comprises the first controller (21) and the first power supply (22), this the first controller (21) signal connects intelligent breaker (1), and this first power supply (22) electricity connects the first controller (21); This integrated monitoring apparatus also comprises data concentrator (3) and Surveillance center (4); This first controller (21) signal is connected with the first wireless communication module (24); This data concentrator (3) at least comprises second controller (31) and second source (34), and this second source (34) electricity connects second controller (31); This second controller (31) signal is connected with a GPRS interface (33) and the second wireless communication module (32); This second wireless communication module (32) and the first wireless communication module (24) coordinate; This Surveillance center (4) establishes the 2nd GPRS interface, and the 2nd GPRS interface and a GPRS interface (33) coordinate.
In one preferred embodiment: this first wireless communication module (24) and the second wireless communication module (32) are all ZigBee RF module, between this data concentrator (3) and monitor terminal (2), can communicate to connect by ZigBee.
In one preferred embodiment: this first controller (21) is gone back signal and is connected with charactron display module (25).
In one preferred embodiment: this first power supply (22) is that the first controller (21), the first wireless communication module (24) and charactron display module (25) provide electric energy;
This second source (34) is that second controller (31), a GPRS interface (33) and the second wireless communication module (32) provide electric energy.
In one preferred embodiment: also comprise trunk module (5), this trunk module (5) signal connects monitor terminal (2).
In one preferred embodiment: this data concentrator (3) also comprises a memory, this second controller (31) signal connected storage.
In one preferred embodiment: carry out data communication by RS-485 serial ports between this first controller (21) and intelligent breaker (1).
The technical program is compared with background technology, and its tool has the following advantages:
Monitor terminal obtains the data of intelligent breaker and (for example loads, the reason of leakage current and record trouble tripping operation etc.), data concentrator is first by the data of radio communication collection monitoring terminal, according to instruction, by GPRS, to Surveillance center, send data again, or, data concentrator forwards to monitor terminal the order that Surveillance center sends, adopting wireless communication technology and GPRS means of communication to realize monitors and manages low voltage electric network, therefore overcome the existing deficiency of background technology, and can produce following technique effect: a, data concentrator is first to collect rear unification to be transmitted to Surveillance center, GPRS the number of transmissions is few, reduction expense, b, facilitate the wireless collection monitoring terminal data of data concentrator, monitor terminal arranges that place is influenced few, the convenient monitor terminal of arranging, c, can to leakage current, position rapidly, help staff to fix a breakdown, avoid multiple users power outage, reduce workload, improve operating efficiency, d, there is collection data function, for numerous distribution managements provides data, improved automatization level, reduced potential safety hazard, guarantee power distribution network safe and stable operation, e, rent GPRS communication network, scheme realizes easy, and transmission reliability is high, and communication is stable, the development of f, this device has very strong realistic meaning and practical value.
This data concentrator also comprises memory, and this memory can be stored data, can send the data to after reunification Surveillance center.
Radio communication between data concentrator and monitor terminal is ZigBee wireless network, free, does not need wiring, and, simplified network structure, operational feasibility is high.
This trunk module signal connects monitor terminal, for transmitting data blocking, in signal situation on the weak side.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is described in further detail.
Fig. 1 has illustrated the overall structure block diagram of a kind of low voltage electric network load of the utility model and leakage current integrated monitoring apparatus.
Fig. 2 has illustrated the structured flowchart of data concentrator of the present utility model.
Fig. 3 has illustrated the structured flowchart of monitor terminal of the present utility model.
Embodiment
Please refer to Fig. 1 to Fig. 3, a kind of low voltage electric network load and leakage current integrated monitoring apparatus, comprise intelligent breaker 1, monitor terminal 2, trunk module 5, data concentrator 3 and Surveillance center 4.Between intelligent breaker 1 and monitor terminal 2, by RS-485 serial ports, carry out data communication; Between monitor terminal 2 and data concentrator 3, by ZigBee-network, carry out data communication; Between data concentrator 3 and Surveillance center 4, by GPRS network, communicate; Trunk module 5 is for blocking, in signal situation on the weak side, for monitor terminal 2 and data concentrator 3 carry out data transmission.System module in Surveillance center 4 can be long-range to the on-line monitoring of ring main unit humiture environment.
Described intelligent breaker 1 has following function: 1, energy Real-time Collection line information, record circuit failure cause, information and time; 2, circuit breaker parameters can arrange, and can be operated in automatically and under manual control mode, wherein: under a, automatic control mode, when leakage current, voltage, electric current are out-of-limit, circuit breaker can automatic trip; Under b, manual control mode, the overvoltage protection of intelligent breaker 1, overcurrent protection, creepage protection function exit, and generation leakage current, electric current and voltage send warning information when out-of-limit.The intelligent breaker of the present embodiment is existing circuit breaker, the residual current circuit breaker that the model that for example installing is produced with Lou Bao,Ru Shandong Zhuo'er Electric Co., Ltd. of intelligent interface is SZM1L-S/F2-100A.
Described monitor terminal 2 comprises the first controller 21, the first power supply 22, RS-485 communication module 23, a ZigBee RF module 24, charactron display module 25.These the first controller 21 signals connect RS-485 communication module 23, a ZigBee RF module 24, charactron display module 25.Described the first power supply 22 provides electric energy for the first controller 21, RS-485 communication module 23, a ZigBee RF module 24, charactron display module 25, among the present embodiment, the first power supply be input as 220V AC power, be respectively+12V of output, + 3.3V, 220V AC power, wherein :+3.3V supplies with the first controller 21, a ZigBee RF module 24, RS-485 communication module 23,25 uses of charactron display module; + 12V and 220V ac current source are expansion stand-by power supply.Described the first controller 21 adopts the PIC24FJ64G004 microprocessor of MICROCHIP company, and this processor has 16 CUP, 44 pins, the program storage of 64kB, the data storage of 8kB, 2 UART interfaces, allow to flash memory program storage, to carry out erasable online.This controller connects RS-485 communication module 23 by UART interface, and these RS-485 communication module 23 signals connect the RS-485 communication module of intelligent breaker 1, to carry out data transmission between monitor terminal and intelligent breaker.Described charactron display module 25 is for showing current circuit breaker deciliter state, indication warning information, communicating by letter and power supply indicator as RS-485, and this charactron display module 25 is connected with the I/O mouth of the first controller 21.
Described data concentrator 3 comprises second controller 31, the 2nd ZigBee RF module 32, a GPRS interface 33, second source 34 and memory, this second controller 31 signals connect the 2nd ZigBee RF module 32, GPRS interface 33 and memories, and this second source 34 provides electric energy for second controller 31, the 2nd ZigBee RF module 32, GPRS interface 33 and memory.Described second controller 31 also adopts the PIC24FJ64G004 microprocessor of MICROCHIP company.
A described ZigBee RF module 24 and the 2nd ZigBee RF module 32 match, between described monitor terminal 2 and described data concentrator 3, adopt the Zigbee protocol based on IEEE802.15.4 standard, grid structure adopts Mesh framework, and ZigBee communication adopts 2.4GHz channel; Wherein Mesh network is comprised of Coordinator, Router and End Device.Described two ZigBee RF modules adopt the XBEE module of U.S. Di Jin company, and operating frequency is 2.4GHz, and indoor transmissions distance can reach 100 meters, integrated ZigBee2006 protocol stack, work in " AT pattern ", can carry out transparent transmission with controller, it is connected by UART interface with controller.
Described Surveillance center 4 includes CPU, memory and the 2nd GPRS interface, the CPU of described Surveillance center 4 for example adopts the atom D5251.8GHz processor of Intel company, cpu signal connected storage and the 2nd GPRS interface, the 2nd GPRS interface receives data and is kept at memory, as required, the CPU place of Hai Ke Surveillance center 4 is provided with the system module of remote monitoring and management, for showing to the parsing of information and at graphical interfaces, and can be by environmental information generating report forms; Also can to data concentrator 3, send order by GPRS network, then be transmitted to corresponding monitor terminal 2 by data concentrator 3, this is ordered as parameters.Surveillance center, by respective response is processed and made to the data message collecting, realizes the telemanagement of intelligent breaker and control.Circuit overvoltage, overcurrent, electric leakage are detected and record analysis automatically, the phenomenon that notes abnormalities is carried out alarm, and act accordingly, for accident cause provides effective analysis foundation, Surveillance center can also long-rangely realize on-line monitoring to ring main unit humiture environment simultaneously.
Described data concentrator 3 is for monitoring, management and monitoring terminal 2, the data of storage monitor terminal 2, store the data of each monitor terminal, to Surveillance center's 4 transmission information, by monitor terminal, circuit breaker parameters is set, meets parameter setting, the data that main website carries out it and call the operations such as survey, reporting events together.Parameter, query argument, switching controls mode, monitoring running status and the copy reading intelligent breaker electrical quantity of intelligent breaker for example: described monitor terminal 2 can pass through the data communication of UART interface, are set.Described monitor terminal 2 radios to data concentrator by line electrical leakage current information by ZigBee-network at set intervals.Described monitor terminal 2 is communicated by letter with intelligent breaker by polling mode.Described monitor terminal 2 when intelligent breaker tripping operation, Threshold Crossing Alert accident at once uploading data to data concentrator.
Described data concentrator 3 by GPRS network, is sent to Surveillance center 4 by these information after the running state information of the information of each circuit and intelligent breaker is gathered.When Surveillance center 4 sends order, can send to data concentrator 3 by GPRS network, then be transmitted to corresponding monitor terminal 2 by data concentrator 3.
In a preferred embodiment, leakage current, voltage, the current information of intelligent breaker 1 Real-time Collection circuit, when intelligent breaker 1 works in automatic mode, if current leakage current, electric current and voltage are out-of-limit, circuit breaker trip, when it works in manual mode, only send the transmission instruction of Threshold Crossing Alert information ,You Surveillance center and determine whether trip.Monitor terminal 2 is by RS-485 interface circuit electric parameters of every 0.2s collection and circuit breaker 1 operating state, by universal serial bus, deliver to the first controller 21, the first controller 21 is made respective handling by control strategy, for example: the first controller 21 every 5s by data (as required, can be rear according to certain format packing), by a ZigBee RF module 24, according to DL/T645 stipulations, send the data to data concentrator 3.Data concentrator 3 is received after the data of monitor terminal 2 by the 2nd ZigBee RF module 32, be kept in the data storage of self, if Surveillance center 4 sends command request to it and calls survey data together, data concentrator 3 just by the data of called together survey (as packed according to certain format, this form is as being < < Q/GDW130-2005 power load management system transfer of data stipulations > > packing), by GPRS network, be sent to Surveillance center 4, Surveillance center 4 receives after data, be stored in self database (as required, for example can carry out Data Analysis to it, after scale conversion, be stored in again in the database of self), and implementation data is presented in man-machine interface.Staff can check real time data and historical data in Surveillance center 4, also can long-rangely to the operation of intelligent breaker 1 and parameter, carry out manual modification simultaneously, controls the divide-shut brake of intelligent breaker 1, and various out-of-limit values are arranged.By this network system, can also realize the transmission of ring main unit humiture data message simultaneously, by Surveillance center's development platform, realize the on-line monitoring of long-range ring main unit humiture environment.
The present embodiment can be monitored leaking the ruuning situation of protecting, can automatically gather the reason of load data, leakage current and record trouble tripping operation, by Remote, control the divide-shut brake of circuit breaker simultaneously, realize the isolation of faulty line and restoring electricity of non-fault line.Long-range visual supervisory control and management to low voltage electric network load and leakage current, will bring about a wholesome effect for the computer-aided traffic control level that improves low voltage electric network load and leakage current.
Implement, after low voltage electric network load and leakage current comprehensively monitoring, can to leakage current, position rapidly, help staff to fix a breakdown, avoided multiple users power outage, reduced workload, improved operating efficiency.From long-run development, system platform can provide data for numerous distribution management functions, to later distribution automation development, play a part positive, improved automatization level, reduced potential safety hazard, guaranteed that power distribution network safely and steadily runs, the development of this system has very strong realistic meaning and practical value.
The above, it is only the utility model preferred embodiment, therefore can not limit according to this scope that the utility model is implemented, the equivalence of doing according to the utility model the scope of the claims and description changes and modifies, and all should still belong in the scope that the utility model contains.

Claims (7)

1. a low voltage electric network is loaded and leakage current integrated monitoring apparatus, comprise intelligent breaker (1) and monitor terminal (2), this monitor terminal (2) at least comprises the first controller (21) and the first power supply (22), this the first controller (21) signal connects intelligent breaker (1), and this first power supply (22) electricity connects the first controller (21); It is characterized in that: this integrated monitoring apparatus also comprises data concentrator (3) and Surveillance center (4); This first controller (21) signal is connected with the first wireless communication module (24); This data concentrator (3) at least comprises second controller (31) and second source (34), and this second source (34) electricity connects second controller (31); This second controller (31) signal is connected with a GPRS interface (33) and the second wireless communication module (32); This second wireless communication module (32) and the first wireless communication module (24) coordinate; This Surveillance center (4) establishes the 2nd GPRS interface, and the 2nd GPRS interface and a GPRS interface (33) coordinate.
2. a kind of low voltage electric network according to claim 1 is loaded and leakage current integrated monitoring apparatus, it is characterized in that: this first wireless communication module (24) and the second wireless communication module (32) are all ZigBee RF module, between this data concentrator (3) and monitor terminal (2), can communicate to connect by ZigBee.
3. a kind of low voltage electric network load according to claim 1 and leakage current integrated monitoring apparatus, is characterized in that: this first controller (21) is gone back signal and is connected with charactron display module (25).
4. a kind of low voltage electric network according to claim 3 is loaded and leakage current integrated monitoring apparatus, it is characterized in that:
This first power supply (22) is that the first controller (21), the first wireless communication module (24) and charactron display module (25) provide electric energy;
This second source (34) is that second controller (31), a GPRS interface (33) and the second wireless communication module (32) provide electric energy.
5. a kind of low voltage electric network load according to claim 1 and leakage current integrated monitoring apparatus, is characterized in that: also comprise trunk module (5), this trunk module (5) signal connects monitor terminal (2).
6. a kind of low voltage electric network load according to claim 2 and leakage current integrated monitoring apparatus, is characterized in that: this data concentrator (3) also comprises a memory this second controller (31) signal connected storage.
7. according to a kind of low voltage electric network load and leakage current integrated monitoring apparatus described in claim 1 or 2 or 3 or 4 or 5 or 6, it is characterized in that: between this first controller (21) and intelligent breaker (1), by RS-485 serial ports, carry out data communication.
CN201320577390.XU 2013-09-17 2013-09-17 Low-voltage power grid load and leak current integrated monitoring device Expired - Fee Related CN203423539U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320577390.XU CN203423539U (en) 2013-09-17 2013-09-17 Low-voltage power grid load and leak current integrated monitoring device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320577390.XU CN203423539U (en) 2013-09-17 2013-09-17 Low-voltage power grid load and leak current integrated monitoring device

Publications (1)

Publication Number Publication Date
CN203423539U true CN203423539U (en) 2014-02-05

Family

ID=50022628

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201320577390.XU Expired - Fee Related CN203423539U (en) 2013-09-17 2013-09-17 Low-voltage power grid load and leak current integrated monitoring device

Country Status (1)

Country Link
CN (1) CN203423539U (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103983885A (en) * 2014-05-05 2014-08-13 国电南瑞科技股份有限公司 Low-voltage circuit fault locating terminal and method used for power distribution substation region
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
CN106324316A (en) * 2015-06-16 2017-01-11 巫继文 Rural low voltage distribution transformer outgoing line end residual current online monitoring system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103983885A (en) * 2014-05-05 2014-08-13 国电南瑞科技股份有限公司 Low-voltage circuit fault locating terminal and method used for power distribution substation region
CN106324316A (en) * 2015-06-16 2017-01-11 巫继文 Rural low voltage distribution transformer outgoing line end residual current online monitoring system
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

Similar Documents

Publication Publication Date Title
CN104134320B (en) Lightning protection online environment monitoring alarming network system
CN102830255B (en) A kind of intelligent electric energy meter with electricity consumption malfunction monitoring defencive function
CN105071536A (en) Intelligent distribution transformer area system
CN103414251B (en) A kind of substation network communication analogue system based on IEC61850
CN102255393B (en) Ground wire hanging anti-error blocking system and method thereof
CN102510048B (en) Anti-override trip protection method
CN103023149A (en) Intelligent power distribution terminal and intelligent power distribution system based on IEC61850
CN203422438U (en) Real-time monitoring and fault location system for overhead lines of power distribution network
CN204835714U (en) Intelligent power distribution platform flora all
CN101127456A (en) Intelligent management system for transformer substation assisted devices
CN201444191U (en) Direct-current power supply online monitoring system
CN104410169A (en) Intelligent and online area monitoring system and implementation method thereof
CN204758748U (en) Cubical switchboard intelligent integrated monitoring devices
CN104297616A (en) 10kV distribution line breaking detection method based on multi-system information interaction
CN203423539U (en) Low-voltage power grid load and leak current integrated monitoring device
CN104821661A (en) Power consumption information acquisition system with residual current monitoring function
CN201365142Y (en) Distribution transformer monitoring terminal with high reliability
CN103227450B (en) On-line failure recovery method and system
CN209676004U (en) A kind of the wireless monitor detector and system of electric line safe operation
CN201682327U (en) Leakage protector remote control system
CN104993601A (en) Box-type substation remote control system
CN204012933U (en) Distribution automation detection and control terminal
CN202333779U (en) Small-current grounding fault detecting and isolating device and system
CN202150740U (en) Intelligent monitoring system for distribution transformer platform area
CN201893609U (en) Remote control power distribution system for meteorological radar

Legal Events

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

Granted publication date: 20140205

Termination date: 20200917