CN102244416B - Intelligent cubicle switchboard oriented to intelligent power grid and operating and controlling method thereof - Google Patents
Intelligent cubicle switchboard oriented to intelligent power grid and operating and controlling method thereof Download PDFInfo
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Abstract
The invention discloses an intelligent cubicle switchboard oriented to an intelligent power grid and an operating and controlling method thereof. The cubicle switchboard comprises an intelligent cubicle switchboard monitoring unit, a temperature and humidity detecting unit, an intelligent measuring and controlling unit, a mechanical characteristic on-line monitoring unit, an insulation on-line monitoring unit, a video monitoring unit, a cubicle switchboard inner environment control unit, a human-computer interface unit, a station level monitoring system, a system power supply unit, a network communication unit and a carrier communication unit. The method comprises the following steps of: monitoring and controlling primary equipment by using the intelligent cubicle switchboard monitoring unit; detecting and regulating the temperature and the humidity in the cubicle switchboard; displaying and adjusting parameters by using the human-computer interface unit; communicating with an intelligent device of the intelligent power grid; displaying video information of the primary equipment in the cubicle switchboard; and communicating the network communication unit with a higher lever monitoring system. The invention can realize intelligent control, mechanical characteristic on-line monitoring, insulation on-line monitoring, video monitoring and quick and reliable communication.
Description
Technical field
The present invention relates to a kind of high-voltage intelligent switch cubicle and operation and control method, be particularly suitable for intelligent grid to the requirement of intelligent power transformation, intelligent power distribution and intelligent scheduling.
Background technology
Along with the proposition of intelligent grid concept and progressively popularization, also put on schedule with the research and development of its relevant smart machine.Intelligent switchboard is as an important component part in intelligent power station, except the basic function with traditional switch cabinet, also to increase intelligent manipulation function, mechanical property on-line monitoring function, function of insulation online monitoring and stable, reach reliable communication function fast, to adapt to the new function of intelligent grid requirement.
Application number is called " high voltage intelligent monitoring system " for " 200810043514.X " name and application number is called the intelligent switchboard that reaches described in " high voltage intelligent monitoring device " disclosed high pressure supervisory control system for " 200820060597.9 " name, though emphasized the communication function that it is stronger, to control with intelligence be the dynamic demonstration of purpose and blocking function and to detect with switchgear self be the environmental monitoring of purpose switch cubicle but do not possess, switchgear mechanical property on-line monitoring, primary equipment function of insulation online monitoring and video monitor function, therefore, the data that provide under the situation that the switchgear oneself state is failed to understand can make the reliable and secure performance of intelligent grid have a greatly reduced quality.
Summary of the invention
In order to realize in the intelligent grid requirement to intelligent switchboard, the present invention proposes a kind of intelligent switchboard and operation and control method with oneself state monitoring function, on the basis of the observing and controlling function that realizes the ordinary tap cabinet, primary equipment state estimation, service bulletin function and video monitor function have been added, and increased primary equipment state parameter upload function, designed by three layer models of process layer, wall and the station level of intelligent grid.
A kind of intelligent switchboard towards intelligent grid, it is characterized in that comprising the intelligent switchboard monitoring unit, the humiture detecting unit, intelligent measurement and control unit, mechanical property on-line monitoring unit, the insulated on-line monitoring unit, the video monitor unit, primary equipment, environment control unit in the cabinet, human and machine interface unit, the station level supervisory control system, power pack, network communication unit and carrier communication unit, wherein the output of primary equipment respectively with the humiture detecting unit, mechanical property on-line monitoring unit, the insulated on-line monitoring unit is connected with the input of video monitor unit, primary equipment while and intelligent measurement and control unit and the two-way communication of carrier communication unit, the humiture detecting unit, the output of mechanical property on-line monitoring unit and insulated on-line monitoring unit links to each other with the input of intelligent switchboard monitoring unit respectively, the input of environment control unit and the output of intelligent switchboard monitoring unit link to each other in the cabinet, intelligent measurement and control unit, human and machine interface unit and station level supervisory control system respectively with the two-way communication of intelligent switchboard monitoring unit, the output of video monitor unit links to each other with the input of human and machine interface unit, carrier communication unit and human and machine interface unit two-way communication, station level supervisory control system and network communication unit two-way communication, power pack is to the intelligent switchboard monitoring unit, the humiture detecting unit, intelligent measurement and control unit, mechanical property on-line monitoring unit, the insulated on-line monitoring unit, the video monitor unit, primary equipment, environment control unit in the cabinet, human and machine interface unit, the station level supervisory control system, power pack and carrier communication unit provide power supply.
Described intelligent measurement and control unit comprises the voltage signal conditioning module, the current signal conditioning module, simulation trip circuit and divide-shut brake module, voltage signal conditioning module wherein, the input of current signal conditioning module connects the output of primary equipment respectively, divide-shut brake module and primary equipment two-way communication, connect the input of divide-shut brake module behind the output serial connection simulation trip circuit of current signal conditioning module, another output of current signal conditioning module and the output of voltage signal conditioning module connect the input of intelligent switchboard monitoring unit respectively, divide-shut brake module and the two-way communication of intelligent switchboard monitoring unit.
A kind of operation method of the intelligent switchboard towards intelligent grid is as follows:
The intelligent switchboard monitoring unit, be used for to realize to gather primary equipment insulation information, switchgear mechanical property information, switch cubicle environmental information and intelligent measurement and control unit transmit in the major loop information about power that comes, the switch cubicle switchgear switching value information carry out further information processing and realize to load protection, be uploaded to the station level supervisory control system to the earth leakage protective of switch cubicle with relevant information; With the station level supervisory control system) the switch cabinet state information that sends and service bulletin information is forwarded to human and machine interface unit and produces necessary switchgear action message and threshold value correction; Be used for the setup parameter that sends from human and machine interface unit is configured; Be used for that environment control unit meets the switching value control that locking requires in the control section, cabinet to switch cubicle; Be used for human and machine interface unit and station level supervisory control system are carried out information communication by specified protocol;
The humiture detecting unit is used for temperature detection is carried out in primary equipment binding post and the switch cubicle inside of necessity, and Humidity Detection is carried out in switch cubicle inside;
Intelligent measurement and control unit, be used for voltage, the current signal of major loop in the switch cubicle are detected and preliminary treatment, and detection signal delivered to simulation trip circuit in intelligent switchboard monitoring unit and this unit, simulate trip circuit in case of necessity and produce the divide-shut brake module that sub-gate signal acts on this unit, switching devices is sent the sub-switching operation order, branch, closing circuit control signal to switchgear in the switch cubicle are exported, switching devices is sent branch, closing operation order, sends switchgear auxiliary contact information in the cabinet to the intelligent switchboard monitoring unit;
Mechanical property on-line monitoring unit, be used for the stroke signal, divide-shut brake coil current signal and the power transmission shaft vibration signal that characterize the operation conditions of mechanical part at the switchgear branch, when closing a floodgate are detected and preliminary treatment, and detection signal is delivered to the intelligent switchboard monitoring unit;
The insulated on-line monitoring unit is used for the leakage current signal that characterizes the switch cubicle insulation status and ultrasonic signal detects and preliminary treatment, and detection signal is delivered to the intelligent switchboard monitoring unit;
The video monitor unit is used for primary equipment in the switch cubicle is carried out the video information collection;
Primary equipment is used for the electric energy in the switch cubicle is transmitted and the branch of major loop, closes control;
Environment control unit in the cabinet is used for the humiture in the switch cubicle is controlled, and realizes its function by blower fan and heater;
Human and machine interface unit, be used for the parameter of intelligent switchboard monitoring unit equipment is inquired about and adjusted, be used for the switching devices current state and failure logging shows and the sound and light alarm of fault, be used for the video information of video monitor unit collection is shown that on the spot the load end intelligent power facility information that is used for the carrier communication unit is sent shows;
The station level supervisory control system is used for the switch cabinet state parameter that the intelligent switchboard monitoring unit transmits is handled, and provides the switch cabinet state assessment, revises threshold value and expert system slip condition database based on the risk cluster in good time;
Power pack, each module that is used for relating to the secondary system loop provides power supply;
Network communication unit is used for station level supervisory control system and higher level's supervisory control system and carries out the interconnected of information;
The carrier communication unit is used for human and machine interface unit) to carry out information interconnected with the load of switch cubicle load-side far-end intelligent power.
The control method of described a kind of intelligent switchboard towards intelligent grid, adopt following steps:
A, processor, communication module and each intermediate variable deposit unit are carried out initialization; The warm and humid tolerance that each Temperature Humidity Sensor will be correlated with is sent to the humiture detecting unit with the form of radio wave, then deposit corresponding register in, current transformer, voltage transformer are delivered to the intelligent switchboard monitoring unit with current signal, voltage signal respectively after conditioning, be delivered to the parameter measurement program again after sampling, wherein current signal is delivered to the simulation trip circuit of intelligent measurement and control unit simultaneously behind modulate circuit;
B, judge whether major loop breaks down, if taken place then to read corresponding fault signature value and fault time value, and charge to ferroelectric memory by the agreement form, the notice human and machine interface unit makes it produce the sound and light alarm signal, sends the circuit breaker disjunction and instructs;
C, read the main circuit voltage parameter, judge whether switch cubicle is charged;
If the D switch cubicle is charged, then drop into the insulating monitoring task, each phase leakage current of primary circuit in the compute switch cabinet, in case out-of-limit, read leakage current values and time value, charge to ferroelectric memory by the agreement form, the notice human and machine interface unit makes it produce the sound and light alarm signal, and sends switchgear disjunction instruction, and leakage current values and discharging current signal be uploaded to the station level supervisory control system, otherwise cross this step;
E, according to switchgear disjunction instruction, change to drive divide-shut brake relay corresponding in the intelligent measurement and control unit and control circuit-breaker switching on-off through IO mouth level relevant in the intelligent switchboard monitoring unit;
F, change according to relevant IO mouth level in switchgear disjunction instruction and the intelligent switchboard monitoring unit that circuit breaker auxiliary contact situation causes and to judge whether switchgear is in the displacement process;
If the G switchgear is in the displacement process, then drop into mechanical property monitoring task, the actuating length of switchgear, electric current and the mechanical oscillation signal of divide-shut brake coil are uploaded the station level supervisory control system, otherwise crossed this step;
Environment value compares with preset threshold in H, the cabinet that detects according to the humiture detecting unit, carries out environment control as need, then opens blower fan or heater and carries out corresponding environment and control;
I, human and machine interface unit and the communication of station level supervisory control system all adopt the mode and the intelligent switchboard monitoring unit that regularly interrupt to communicate exchange parameter, state and out of Memory.
The invention has the beneficial effects as follows:
1, the mechanical property on-line monitoring system that has multisensor, merge through multi-sensor data, adopt the DS evidence theory that the mechanical property parameter is merged judgement, introduce nondeterministic statement, carry out comprehensive assessment switchgear mechanical property according to confidence level, make the mechanical property feature that monitors more reliable, thereby improved the reliability of switchgear in system, and make the service bulletin of formulation more rationally economical.
2, have insulation characterisitic on-line monitoring function, but make the be in operation work of safety and reliability of switch cubicle, for the reasonable maintenance of switch cubicle provides more fully data support.
3, have special intelligent measurement and control unit, make control signal not only pass through the logic blocking of software, also will be through the hardware logic locking of the composition of the CPLD logical block after the programming, reliability is improved once again.
4, the intelligent trouble diagnosis function that has the station level supervisory control comuter, increase by the switchgear fault sample, employing has the discriminant function of the K mean cluster method intelligence correction switchgear malfunction of risk factor, draws more reliable switchgear state; Employing makes the service bulletin that provides more reasonable based on the expert system of membership function.
5, have powerful network communicating function, support Fieldbus Based optical fiber, Ethernet and three kinds of communication modes of twisted-pair feeder, wherein optical fiber, ethernet module are matched part for supplying the user, and be flexible.
6. has the video monitor function, by the video information in the camera collection cabinet that is installed in fixed position in the switch cubicle, thereby realize showing on the spot, make the visual information of primary equipment in the observation cabinet that the staff can be real-time on the display screen of human and machine interface unit.
7. have the carrier communication function, the information of can being undertaken by the intelligent power equipment of power line realization and load-side is interconnected.
Description of drawings
Fig. 1 is application system schematic diagram of the present invention;
Fig. 2 is intelligent measurement and control unit composition frame chart of the present invention;
Fig. 3 is insulated on-line monitoring of the present invention unit composition frame chart;
Fig. 4 is human and machine interface unit composition frame chart of the present invention;
Fig. 5 is workflow schematic diagram of the present invention.
Embodiment
The invention will be further described below with reference to the drawings and specific embodiments.
The technical scheme that this intelligent switchboard adopts is: intelligent switchboard monitoring unit 1 is realized the monitoring of primary equipment 7 and control by humiture detecting unit 2, intelligent measurement and control unit 3, mechanical property on-line monitoring unit 4, insulated on-line monitoring unit 5; Intelligent switchboard monitoring unit 1 is realized detection to humiture in the switch cubicle by humiture detecting unit 2; Intelligent switchboard monitoring unit 1 realizes that by environment control unit in the cabinet 8 humiture in the switch cubicle regulates; Intelligent switchboard monitoring unit 1 is realized showing on the spot and parameter adjusting on the spot by human and machine interface unit 9; Intelligent switchboard monitoring unit 1 is connected with station level supervisory control system 10 by fieldbus, realizes the failure diagnosis of switchgear state, and the threshold value correction also produces service bulletin; Human and machine interface unit 9 realizes demonstration on the spot to primary equipment in the cabinet by video monitor unit 6; Human and machine interface unit 9 realizes and the communicating by letter of load end intelligent power equipment by carrier communication unit 13; Station level supervisory control system 10 can be matched according to network connecting mode by network communication unit 12() realize the communication with the relevant supervisory control system of intelligent grid; Power pack 11 is responsible for the power supply of full cabinet secondary part.Wherein:
Intelligent switchboard monitoring unit 1 processor is selected devices such as high-grade DSP and big capacity CPLD for use; and is furnished with ferroelectric memory; companion chips such as clock chip; realize protection, data processing and conversion and communication control function; and have CAN port, RS485 serial communication interface and the interconnection of station level supervisory control system, by two-port RAM and human and machine interface unit interconnection.
Humiture detecting unit 2 adopts the mode image data of wireless sensor network, overcomes contact type temperature sensor, and problem and the infrared noncontacting proximity sensor of different potentials insulation difficulty are subjected to the big shortcoming of air regime condition influence in the cabinet when measuring the major loop temperature.
Intelligent measurement and control unit 3, be used for voltage, the current signal of major loop in the switch cubicle are detected and preliminary treatment, and detection signal delivered to simulation trip circuit in intelligent switchboard monitoring unit and this unit, simulate trip circuit in case of necessity and produce the divide-shut brake module that sub-gate signal acts on this unit, switching devices is sent the sub-switching operation order, branch, closing circuit control signal to switchgear in the switch cubicle are exported, switching devices is sent branch, closing operation order, sends switchgear auxiliary contact information in the cabinet to the intelligent switchboard monitoring unit;
Mechanical property on-line monitoring unit 4 adopt linear displacement transducers and (or) angular displacement sensor and coherent signal modulate circuit detect stroke signal, adopt Hall element and relevant modulate circuit to come the current signal of sense switch equipment divide-shut brake coil, adopt piezoelectric acceleration transducer and relevant modulate circuit to come the vibration signal of sense switch equipment, when abnormal state, upload fault message to the station level supervisory control system, start expert system, expert system carries out the fault type reasoning according to situation inquiry experts database and fault type is analyzed.
After insulated on-line monitoring unit 5 adopts contact drainage ring structure, isolate through small current mutual inductor, the conditioning of adopting high-precision instrumentation amplifier to carry out signal again detects leakage current signal, adopt ultrasonic receiver to be arranged in the diverse location of switch cubicle housing, carry out discharge scenario in the detecting box according to ultrasonic wave situation in the cabinet, when leakage current or ultrasound detection have arbitrary parameter to transfinite, then upload fault message to the station level supervisory control system, start expert system, expert system is carried out fault type reasoning and fault type location according to situation inquiry experts database.
Video monitor unit 6 is used for primary equipment in the switch cubicle is carried out the video information collection, is made up of the camera that is placed in fixed position in the cabinet and image processing circuit thereof.
Primary equipment 7 is used for the electric energy in the switch cubicle is transmitted and the branch of major loop, closes control, mainly is made up of switchgear, isolating switch, bus etc.
Environment control unit 8 adopts the method for ventilation blower and electric heater to realize the humiture adjusting of switch cubicle in the cabinet.
Human and machine interface unit 9 adopts single-chip microcomputer or ARM to add the framework of LCD or TFT, the mode of outer attached luminous tube, button and alarm buzzer realizes parameter query and the adjustment of equipment, be used for the switching devices current state and failure logging shows and the sound and light alarm of fault, communicate by two-port RAM and intelligent control unit 1.
Station level supervisory control system 10, adopting industrial control computer to add related software realizes, record switchgear slip condition database and failure diagnosis experts database, being used for the switching devices state information handles with state recognition and produces corresponding service bulletin, communicate by RS485 bus, Ethernet or CAN bus and intelligent control unit 1, communicate by network communication unit 12 and higher level's monitoring.
Power pack 11, each module that is used for relating to the secondary system loop provides power supply, adopts the power supply of AC and DC two-way power supply, alternating current after rectification with DC power supply with or the mode secondary circuit power supply of giving intelligent switchboard.
As shown in Figure 1, application system of the present invention comprises: intelligent switchboard body, station level supervisory computer system, power bus-bar, Ethernet, optical networking or fieldbus network are formed.
Be subjected to electric power line behind the primary equipment of intelligent switchboard to allotting power line, the voltage of power circuit, current signal are sent into intelligent measurement and control unit (containing the simulation tripping function) after voltage, the current transformer of switch cubicle detect; Network communication unit is used for station level supervisory control system and higher level's supervisory control system are carried out the interconnected of information, the video monitor unit is used for that video information in the cabinet is sent to human and machine interface unit by the RS485 bus and shows on the spot, the power carrier unit is used for the information of the relevant information of load-side far-end intelligent power equipment and intelligent switchboard is carried out interconnected, to support control and the communication function of intelligent grid.
As shown in Figure 2, intelligent measurement and control unit is made up of voltage signal modulate circuit, current signal modulate circuit, simulation trip circuit and divide-shut brake module, wherein the voltage signal modulate circuit amplifies the voltage signal that voltage transformer collects, after low pass filtered involves the benchmark lifting, make it to become and meet the voltage signal that dsp chip AD module requires; The current signal that the current signal modulate circuit collects current transformer makes it to become the voltage signal that meets the requirement of dsp chip AD module after flowing and pressing conversion, amplification, low pass filtered to involve the benchmark lifting; The function of simulation trip circuit then is made up of reference voltage and comparison circuit, when the voltage signal that characterizes the main circuit current size in the current signal modulate circuit transfinites, handles without DSP, directly acts on the divide-shut brake module, makes the switchgear separating brake; The divide-shut brake module is then formed with the switching value input signal buffer circuit two parts that link to each other with the switchgear auxiliary contact with the divide-shut brake control circuit that amplifying circuit is formed by isolating through photoelectricity, and its function is the driving of switchgear deciliter coil and the isolation of switching value input signal.
As shown in Figure 3, the insulated on-line monitoring unit is made up of leakage current testing circuit and ultrasound examination circuit two parts, wherein the leakage current testing circuit is gathered leakage current by the drainage ring that is installed in terminal through walls bottom in the switch cubicle, flow through the Hall current instrument transformer then and press conversion, amplify on the spot and low-pass filtering, carry out the signal conversion through signal conversion circuit again and convert leakage current signal the standard signal of 4-20mA to, be transferred to the conversion of monitoring unit side then through twisted-pair feeder or coaxial cable, amplification and low-pass filter circuit and signal conditioning circuit are converted into the voltage signal that meets DSP input requirement and send into DSP; Ultrasonic discharge detection circuit is gathered ultrasonic signal through amplifying on the spot and bandpass filtering by the ultrasonic sensor that is installed on the switch cabinet panel, carry out the signal conversion through signal conversion circuit again and convert leakage current signal the standard signal of 4-20mA to, be transferred to conversion, amplification and the bandwidth-limited circuit of monitoring unit side and signal conditioning circuit through twisted-pair feeder or coaxial cable then and be converted into and meet the voltage signal that the DSP input requires and send into DSP.
As shown in Figure 4, human and machine interface unit is made up of single-chip microcomputer or arm processor, LCD or TFT display screen, button and treatment circuit, RAM, two-way RS485 communication and buffer circuit and sound and light alarm and drive circuit.Wherein single-chip microcomputer or ARM link to each other with the dual port RAM of monitoring unit by data/address bus and relevant control bus, realize with the information of intelligent switchboard monitoring unit interconnected; One road RS485 communication and buffer circuit link to each other with the carrier communication unit, set up passage by the far-end intelligent power equipment of carrier communication unit and switch cubicle load-side; Another RS485 communication and buffer circuit link to each other with the video monitor unit, set up the information channel of camera in human and machine interface unit and the cabinet.
As shown in Figure 5, when the present invention worked, after power pack powered on, system carried out function of initializing, then everywhere humiture information in the information record switch cubicle that provides according to the humiture detecting unit; The moisture signal of the switchgear terminals that provide according to intelligent measurement and control unit and humiture detecting unit carries out the calculating of electric current, magnitude of voltage and realizes conventional relaying protection function; The switchgear branch, the "on" position signal that provide according to intelligent measurement and control unit are judged the state of switchgear, determine whether switching of insulating monitoring task; The switchgear branch that branch, switching signal and the intelligent measurement and control unit that provides according to the intelligent switchboard monitoring unit provides, "on" position signal judge that switchgear whether in the displacement process, determines mechanical property monitoring task whether to throw and moves back; Ambient temperature and humidity signal in the cabinet that collects according to the humiture detecting unit determines whether to open heater or blower fan and carries out environment control; The sampling of data and calculating all are that interrupt mode is carried out; Also adopt interrupt mode with human and machine interface unit and communicating by letter of station level supervisory control system, various protections and monitoring quantitative analysis are then with the form work of task.
The present invention can adopt various ways to implement and not break away from spirit of the present invention or substantive characteristics, unless specify, above-described embodiment is not limited to previously described any details, but explain widely in the spirit and scope of the present invention that should be defined by the following claims, and therefore described claim comprise in the border of dropping on claim and the boundary change and the cost thing of modification or this border and boundary.
Claims (4)
1. intelligent switchboard towards intelligent grid, it is characterized in that comprising intelligent switchboard monitoring unit (1), humiture detecting unit (2), intelligent measurement and control unit (3), mechanical property on-line monitoring unit (4), insulated on-line monitoring unit (5), video monitor unit (6), primary equipment (7), environment control unit (8) in the cabinet, human and machine interface unit (9), station level supervisory control system (10), power pack (11), network communication unit (12) and carrier communication unit (13), wherein the output of primary equipment (7) respectively with humiture detecting unit (2), mechanical property on-line monitoring unit (4), insulated on-line monitoring unit (5) is connected with the input of video monitor unit (6), primary equipment (7) while and intelligent measurement and control unit (3) and carrier communication unit (13) two-way communication, humiture detecting unit (2), the output of mechanical property on-line monitoring unit (4) and insulated on-line monitoring unit (5) links to each other with the input of intelligent switchboard monitoring unit (1) respectively, the input of environment control unit (8) and the output of intelligent switchboard monitoring unit (1) link to each other in the cabinet, intelligent measurement and control unit (3), human and machine interface unit (9) and station level supervisory control system (10) respectively with intelligent switchboard monitoring unit (1) two-way communication, the output of video monitor unit (6) links to each other with the input of human and machine interface unit (9), carrier communication unit (13) and human and machine interface unit (9) two-way communication, station level supervisory control system (10) and network communication unit (12) two-way communication, power pack (11) is to intelligent switchboard monitoring unit (1), humiture detecting unit (2), intelligent measurement and control unit (3), mechanical property on-line monitoring unit (4), insulated on-line monitoring unit (5), video monitor unit (6), primary equipment (7), environment control unit (8) in the cabinet, human and machine interface unit (9), station level supervisory control system (10), power pack (11) and carrier communication unit (13) provide power supply.
2. a kind of intelligent switchboard towards intelligent grid according to claim 1, it is characterized in that described intelligent measurement and control unit (3) comprises the voltage signal conditioning module, the current signal conditioning module, simulation trip circuit and divide-shut brake module, voltage signal conditioning module wherein, the input of current signal conditioning module connects the output of primary equipment (7) respectively, divide-shut brake module and primary equipment (7) two-way communication, connect the input of divide-shut brake module behind the output serial connection simulation trip circuit of current signal conditioning module, another output of current signal conditioning module and the output of voltage signal conditioning module connect the input of intelligent switchboard monitoring unit (1) respectively, divide-shut brake module and intelligent switchboard monitoring unit (1) two-way communication.
3. the operation method of an a kind of intelligent switchboard towards intelligent grid as claimed in claim 1 is characterized in that described method is as follows:
Intelligent switchboard monitoring unit (1), be used for to realize to gather primary equipment (7) insulation information, switchgear mechanical property information, switch cubicle environmental information and intelligent measurement and control unit transmit in the major loop information about power that comes, the switch cubicle switchgear switching value information carry out further information processing and realize to load protection, be uploaded to the station level supervisory control system to the earth leakage protective of switch cubicle with relevant information; Switch cabinet state information and service bulletin information that station level supervisory control system (10) is sent are forwarded to human and machine interface unit (9) and produce necessary switchgear action message and threshold value correction; Be used for the setup parameter that sends from human and machine interface unit (9) is configured; Be used for that environment control unit meets the switching value control that locking requires in the control section, cabinet to switch cubicle; Be used for human and machine interface unit (9) and station level supervisory control system (10) are carried out information communication by specified protocol;
Humiture detecting unit (2) is used for temperature detection is carried out in primary equipment (7) binding post and the switch cubicle inside of necessity, and Humidity Detection is carried out in switch cubicle inside;
Intelligent measurement and control unit (3), be used for the voltage to major loop in the switch cubicle, current signal detects and preliminary treatment, and detection signal delivered to simulation trip circuit in intelligent switchboard monitoring unit and the intelligent measurement and control unit (3), simulate trip circuit in case of necessity and produce the divide-shut brake module that sub-gate signal acts on intelligent measurement and control unit (3), switching devices is sent the sub-switching operation order, branch to switchgear in the switch cubicle, the closing circuit control signal is exported, switching devices is sent branch, the closing operation order sends switchgear auxiliary contact information in the cabinet to intelligent switchboard monitoring unit (1);
Mechanical property on-line monitoring unit (4), be used for the stroke signal, divide-shut brake coil current signal and the power transmission shaft vibration signal that characterize the operation conditions of mechanical part at the switchgear branch, when closing a floodgate are detected and preliminary treatment, and detection signal is delivered to intelligent switchboard monitoring unit (1);
Insulated on-line monitoring unit (5) is used for the leakage current signal that characterizes the switch cubicle insulation status and ultrasonic signal detects and preliminary treatment, and detection signal is delivered to intelligent switchboard monitoring unit (1);
Video monitor unit (6) is used for primary equipment in the switch cubicle is carried out the video information collection;
Primary equipment (7) is used for the electric energy in the switch cubicle is transmitted and the branch of major loop, closes control;
Environment control unit (8) in the cabinet is used for the humiture in the switch cubicle is controlled, and realizes its function by blower fan and heater;
Human and machine interface unit (9), be used for the parameter of intelligent switchboard monitoring unit equipment is inquired about and adjusted, be used for the switching devices current state and failure logging shows and the sound and light alarm of fault, be used for the video information of video monitor unit collection is shown that on the spot the load end intelligent power facility information that is used for the carrier communication unit is sent shows;
Station level supervisory control system (10) is used for the switch cabinet state parameter that the intelligent switchboard monitoring unit transmits is handled, and provides the switch cabinet state assessment, revises threshold value and expert system slip condition database based on the risk cluster in good time;
Power pack (11), each module that is used for relating to the secondary system loop provides power supply;
Network communication unit (12) is used for station level supervisory control system (10) and carries out the interconnected of information with higher level's supervisory control system;
Carrier communication unit (13), being used for human and machine interface unit (9) and the load of switch cubicle load-side far-end intelligent power, to carry out information interconnected.
4. the control method of an a kind of intelligent switchboard towards intelligent grid as claimed in claim 1 is characterized in that adopting following steps:
A, processor, communication module and each intermediate variable deposit unit are carried out initialization; The warm and humid tolerance that each Temperature Humidity Sensor will be correlated with is sent to humiture detecting unit (2) with the form of radio wave, then deposit corresponding register in, current transformer, voltage transformer are delivered to intelligent switchboard monitoring unit (1) with current signal, voltage signal respectively after conditioning, be delivered to the parameter measurement program again after sampling, wherein current signal is delivered to the simulation trip circuit of intelligent measurement and control unit simultaneously behind modulate circuit;
B, judge whether major loop breaks down, if taken place then to read corresponding fault signature value and fault time value, and charge to ferroelectric memory by the agreement form, notify human and machine interface unit (9), make it produce the sound and light alarm signal, send circuit breaker disjunction instruction;
C, read the main circuit voltage parameter, judge whether switch cubicle is charged;
If the D switch cubicle is charged, then drop into the insulating monitoring task, each phase leakage current of primary circuit in the compute switch cabinet, in case out-of-limit, read leakage current values and time value, charge to ferroelectric memory by the agreement form, the notice human and machine interface unit makes it produce the sound and light alarm signal, and sends switchgear disjunction instruction, and leakage current values and discharging current signal be uploaded to the station level supervisory control system, otherwise cross this step;
E, according to switchgear disjunction instruction, change to drive divide-shut brake relay corresponding in the intelligent measurement and control unit (3) and control circuit-breaker switching on-off through IO mouth level relevant in the intelligent switchboard monitoring unit (1);
F, change according to relevant IO mouth level in switchgear disjunction instruction and the intelligent switchboard monitoring unit (1) that circuit breaker auxiliary contact situation causes and to judge whether switchgear is in the displacement process;
If the G switchgear is in the displacement process, then drop into mechanical property monitoring task, the actuating length of switchgear, electric current and the mechanical oscillation signal of divide-shut brake coil are uploaded the station level supervisory control system, otherwise crossed this step;
H, the interior environment value of cabinet and the preset threshold that detect according to humiture detecting unit (2) compare, and carry out environment control as need, then open blower fan or heater and carry out corresponding environment control;
I, human and machine interface unit (9) and station level supervisory control system (11) communication all adopt the mode and the intelligent switchboard monitoring unit that regularly interrupt to communicate exchange parameter, state and out of Memory.
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