CN105098987A - Medium-voltage intelligent switching equipment - Google Patents
Medium-voltage intelligent switching equipment Download PDFInfo
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- CN105098987A CN105098987A CN201510525383.9A CN201510525383A CN105098987A CN 105098987 A CN105098987 A CN 105098987A CN 201510525383 A CN201510525383 A CN 201510525383A CN 105098987 A CN105098987 A CN 105098987A
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Abstract
The invention discloses a piece of medium-voltage intelligent switching equipment comprising an on-line monitoring device, a temperature monitoring module, a grounding knife switch control module, a chassis truck control module, a diagnosis system, a background monitoring system, and a man-machine interface. The on-line monitoring device is connected with the man-machine interface through an RS485 bus. The temperature monitoring module, the grounding knife switch control module and the chassis truck control module are connected to a micro control unit MCU inside the on-line monitoring device through RS485 buses. The diagnosis system and the background monitoring system are connected with the man-machine interface. The medium-voltage intelligent switching equipment of the invention is a core component for an intelligent distribution network, and can monitor the real-time running state of a switch cabinet online and friendly display the running state through the man-machine interface in addition to the protection function of traditional switch cabinets. Moreover, an RS485 communication interface and an Ethernet interface are provided, which makes background communication possible, and improves the safety and stability of the power system.
Description
Technical field
The present invention relates in one and press Intellectualized Switchgear.
Background technology
In China, the construction of intelligent grid is a urgent task.The target that China builds intelligent grid is " strong intelligent grid ", namely rack strong for structure and intelligent construction are merged, the chief component of this organic whole is generating, transmission of electricity, power transformation, distribution, electricity consumption, automatic dispatching, communication etc.Building is bulk transmission grid with extra-high voltage grid, electric network coordination development at different levels, turns to the strong intelligent grid of feature with informationization, automation, interaction.
In the electrical power distribution automatization system of strong intelligent grid, intelligent power distribution equipment is wherein important part, and direct impetus is played in its development of development to the strong intelligent grid of China.Wherein medium voltage switchgear equipment is as important primary power distribution equipment, and its intelligent development is closely related with the development of intelligent grid.
The switch control cabinet that traditional switch cabinet is mainly combined into by circuit breaker, contactor, thermal relay, fuse, control relay, instrument transformer and various electrical instrument (ammeter, voltmeter, wattmeter, electric energy meter etc.) realizes the functions such as distribution, control, protection, supervision, and it exists following defect:
Handcart, earthed switch etc. all cannot realize remote logic and control;
Breaker mechanic property information cannot carry out Real-Time Monitoring;
The temperature of key part information such as contact arm, bus, cabinet are interior cannot carry out Real-Time Monitoring;
The leakage current of insulating part cannot Real-Time Monitoring;
Real time data and threshold value cannot be carried out Logic judgment, send early warning signal in time;
RS485 communication interface or Ethernet interface cannot be provided;
Distributed on line monitoring protection system cannot be connected and composed.
Therefore, need to provide a kind of new technical scheme to solve the problems referred to above.
Summary of the invention
The technical problem to be solved in the present invention is to provide in one and presses Intellectualized Switchgear.
For solving the problems of the technologies described above, middle pressure Intellectualized Switchgear of the present invention, it comprises on-Line Monitor Device, temperature monitoring module, earthing control module, chassis vehicle control module, diagnostic system, backstage monitoring system and man-machine interface, described on-Line Monitor Device connects man-machine interface by RS485 bus, described temperature monitoring module, earthing control module, chassis vehicle control module connect the micro-control unit MCU in on-Line Monitor Device respectively by RS485 bus, and described diagnostic system is also connected with man-machine interface with backstage monitoring system.
Described on-Line Monitor Device comprises micro-control unit MCU, Leakage Current monitoring means, wet temp monitoring means, Hall element, collecting unit and photoisolator, and described Leakage Current monitoring means, wet temp monitoring means, Hall element, collecting unit are all connected with micro-control unit MCU with photoisolator.
Described temperature monitoring module comprises antenna transmission module, antenna receive module, temperature monitoring processing unit and contact arm temperature sensor, described contact arm temperature sensor is electrically connected with antenna transmission module, described antenna transmission module is electrically connected with antenna receive module, and described antenna receive module is electrically connected with temperature monitoring processing unit.
Described earthing control module comprises earthed switch control unit and auxiliary switch, and described earthed switch control unit controls auxiliary switch and is positioned at closing position or service position, and described auxiliary switch is connected with leakage current monitoring means again.
Described chassis vehicle control module comprises chassis vehicle control unit and auxiliary switch, and described chassis vehicle control unit controls auxiliary switch and is positioned at test position or service position, and described auxiliary switch is connected with control motor again.
Described diagnostic system comprises Condition Monitoring Data collecting unit, facility information storehouse, embedded real-time data base, historical data base, the data of collection are delivered to facility information storehouse by Condition Monitoring Data collecting unit, again analysis carried out to signal and levy bright extraction, fault is levied the result after bright extraction, deliver to historical data base on the one hand, on the other hand deliver to pattern recognition, after pattern recognition, deliver to embedded real-time data base, finally by conclusion and decision feedback to man-machine interface.
Described backstage monitoring system comprises based on the RS485 communication interface of Modbus communication protocol, transceiver and photoisolator, based on the network interface of IEC61850 communication protocol, network transformer and network card chip.
Beneficial effect of the present invention: press Intellectualized Switchgear to be core component used in a kind of intelligent distribution network in the present invention, except there is the defencive function of traditional switch cabinet, to switch cubicle running status real time on-line monitoring, and can also be shown by man-machine interface close friend; RS485 communication interface and Ethernet interface being provided simultaneously, providing possibility for realizing background communication, and then improve the security and stability of electric power system.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Wherein: 1, on-Line Monitor Device, 2, temperature monitoring module, 3, earthing control module, 4, chassis vehicle control module, 5, diagnostic system, 6, backstage monitoring system, 7, man-machine interface.
Embodiment
In order to deepen the understanding of the present invention, below in conjunction with embodiment and accompanying drawing, the invention will be further described, and this embodiment, only for explaining the present invention, does not form the restriction to protection scope of the present invention.
As shown in Figure 1, middle pressure Intellectualized Switchgear of the present invention, it comprises on-Line Monitor Device 1, temperature monitoring module 2, earthing control module 3, chassis vehicle control module 4, diagnostic system 5, backstage monitoring system 6 and man-machine interface 7, on-Line Monitor Device 1 connects man-machine interface 7 by RS485 bus, temperature monitoring module 2, earthing control module 3, chassis vehicle control module 4 connect the micro-control unit MCU in on-Line Monitor Device 1 respectively by RS485 bus, and diagnostic system 5 is also connected with man-machine interface 7 with backstage monitoring system 6.
On-Line Monitor Device 1 comprises micro-control unit MCU, Leakage Current monitoring means, wet temp monitoring means, Hall element, collecting unit and photoisolator, Leakage Current monitoring means, wet temp monitoring means, Hall element, collecting unit and photoisolator are all connected with micro-control unit MCU, Leakage Current transducer by the information transmission that detects to Leakage Current monitoring means, Temperature Humidity Sensor by the information transmission that detects to wet temp monitoring means, Hall element detects energy storage electric current and divide-shut brake electric current, the information that charged display information and displacement transducer detect delivers to collecting unit, switching value delivers to photoisolator.On-Line Monitor Device 1 is monitored by real-time online continuous print, with the threshold parameter com-parison and analysis of default, the warning of each malfunction is provided after carrying out intelligent diagnostics, and whole Monitoring Data is uploaded to host computer by RS485 carries out visual man-machine interface display, reserve the interface of a pair RS485 and CAN communication simultaneously on the apparatus, conveniently communicated with host computer.
On-line monitoring function: leakage current, bus temperature, breaker mechanic property, divide-shut brake electric current etc.
Temperature monitoring module 2 comprises antenna transmission module, antenna receive module, temperature monitoring processing unit and contact arm temperature sensor, contact arm temperature sensor is electrically connected with antenna transmission module, antenna transmission module is electrically connected with antenna receive module, and antenna receive module is electrically connected with temperature monitoring processing unit.
Earthing control module 3 comprises earthed switch control unit and auxiliary switch, and earthed switch control unit controls auxiliary switch and is positioned at closing position or service position, and auxiliary switch is connected with leakage current monitoring means again.
Chassis vehicle control module 4 comprises chassis vehicle control unit and auxiliary switch, and chassis vehicle control unit controls auxiliary switch and is positioned at test position or service position, and auxiliary switch is connected with control motor again.
Diagnostic system 5 comprises Condition Monitoring Data collecting unit, facility information storehouse, embedded real-time data base, historical data base, the data of collection are delivered to facility information storehouse by Condition Monitoring Data collecting unit, again analysis carried out to signal and levy bright extraction, fault is levied the result after bright extraction, deliver to historical data base on the one hand, on the other hand deliver to pattern recognition, after pattern recognition, deliver to embedded real-time data base, finally by conclusion and decision feedback to man-machine interface.
Backstage monitoring system 6 comprises based on the RS485 communication interface of Modbus communication protocol, transceiver and photoisolator, based on the network interface of IEC61850 communication protocol, network transformer and network card chip.
Man-machine interface 7 is also connected with touch processing unit, primary circuit status display unit, curve data display access unit, parameter display access unit, Clock Managing Unit, system parameter setting unit.
Man-machine interface 7 adopts industry screen; relevant status signal, information about power, on-line monitoring information close friend are presented on industry screen; intelligent breaker and on-Line Monitor Device data fusion; in man-machine interface display and control, and easily can be revised and the protection measurement and control logic parameter configured by man-machine interface and transformer station management system.
Middle pressure Intellectualized Switchgear carry cut-offfing of power circuit and close, the vital task such as error protection and system cloud gray model monitoring, be the key equipment in electric power system.
This product has following features:
1. break alarm, low-voltage lockout overcurrent one segment protect, low-voltage lockout overcurrent two segment protect, overcurrent three section protection, after accelerated protection, overload protection, ground protection one section, ground protection two sections, PT of traditional protection: CT breaks alarm;
2. controlling functions: circuit breaker deciliter, handcart shake into shaking out, earthed switch closes, heat, air draft, illumination etc.;
3. on-line monitoring function: leakage current, bus temperature, breaker mechanic property, divide-shut brake electric current etc.;
4. Presentation Function: relevant status signal, information about power, on-line monitoring information close friend are presented on industry screen;
5. communication function: device inside adopts RS485 communication, and RS485 or ethernet communication can be passed through in backstage;
6. memory function: switchgear running status used is stored by logging modle;
7. warning function: Real-time Logic judges, sends early warning signal in time.
Middle pressure Intellectualized Switchgear the heating temp of bus junction, the leakage current, switch machine characteristic curve parameter, switching value, divide-shut brake coil current etc. of insulating part can carry out real time on-line monitoring in Real-Time Monitoring cabinet, and intelligent diagnostics, Monitoring Data is uploaded in real time, timely alarm when exceeding setting threshold.In addition, this device can also to switch cubicle carry out remote control (propelling as electronic in handcart is exited, electronic deciliter of earthed switch and circuit breaker deciliter etc.), and switch cubicle " State Maintenance " can be realized, and sending early warning signal in time, this is significant to the safe operation of electrical network.
Claims (7)
1. in, press Intellectualized Switchgear, it is characterized in that: it comprises on-Line Monitor Device, temperature monitoring module, earthing control module, chassis vehicle control module, diagnostic system, backstage monitoring system and man-machine interface, described on-Line Monitor Device connects man-machine interface by RS485 bus, described temperature monitoring module, earthing control module, chassis vehicle control module connect the micro-control unit MCU in on-Line Monitor Device respectively by RS485 bus, and described diagnostic system is also connected with man-machine interface with backstage monitoring system.
2. middle pressure Intellectualized Switchgear according to claim 1, it is characterized in that: described on-Line Monitor Device comprises micro-control unit MCU, Leakage Current monitoring means, wet temp monitoring means, Hall element, collecting unit and photoisolator, described Leakage Current monitoring means, wet temp monitoring means, Hall element, collecting unit are all connected with micro-control unit MCU with photoisolator.
3. middle pressure Intellectualized Switchgear according to claim 1, it is characterized in that: described temperature monitoring module comprises antenna transmission module, antenna receive module, temperature monitoring processing unit and contact arm temperature sensor, described contact arm temperature sensor is electrically connected with antenna transmission module, described antenna transmission module is electrically connected with antenna receive module, and described antenna receive module is electrically connected with temperature monitoring processing unit.
4. middle pressure Intellectualized Switchgear according to claim 1, it is characterized in that: described earthing control module comprises earthed switch control unit and auxiliary switch, described earthed switch control unit controls auxiliary switch and is positioned at closing position or service position, and described auxiliary switch is connected with leakage current monitoring means again.
5. middle pressure Intellectualized Switchgear according to claim 1, it is characterized in that: described chassis vehicle control module comprises chassis vehicle control unit and auxiliary switch, described chassis vehicle control unit controls auxiliary switch and is positioned at test position or service position, and described auxiliary switch is connected with control motor again.
6. middle pressure Intellectualized Switchgear according to claim 1, it is characterized in that: described diagnostic system comprises Condition Monitoring Data collecting unit, facility information storehouse, embedded real-time data base, historical data base, the data of collection are delivered to facility information storehouse by Condition Monitoring Data collecting unit, again analysis carried out to signal and levy bright extraction, fault is levied the result after bright extraction, deliver to historical data base on the one hand, deliver to pattern recognition on the other hand, deliver to embedded real-time data base after pattern recognition, finally by conclusion and decision feedback to man-machine interface.
7. middle pressure Intellectualized Switchgear according to claim 1, it is characterized in that: described backstage monitoring system comprises based on the RS485 communication interface of Modbus communication protocol, transceiver and photoisolator, based on the network interface of IEC61850 communication protocol, network transformer and network card chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510525383.9A CN105098987A (en) | 2015-08-25 | 2015-08-25 | Medium-voltage intelligent switching equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510525383.9A CN105098987A (en) | 2015-08-25 | 2015-08-25 | Medium-voltage intelligent switching equipment |
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| CN105098987A true CN105098987A (en) | 2015-11-25 |
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| CN201510525383.9A Pending CN105098987A (en) | 2015-08-25 | 2015-08-25 | Medium-voltage intelligent switching equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108155721A (en) * | 2018-02-02 | 2018-06-12 | 杭州佳和电气股份有限公司 | A kind of distribution transformer intelligent monitor system and method |
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Application publication date: 20151125 |