CN103311959B - Monitoring device and monitoring method - Google Patents
Monitoring device and monitoring method Download PDFInfo
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- CN103311959B CN103311959B CN201210066179.1A CN201210066179A CN103311959B CN 103311959 B CN103311959 B CN 103311959B CN 201210066179 A CN201210066179 A CN 201210066179A CN 103311959 B CN103311959 B CN 103311959B
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Abstract
The invention provides a monitoring device and a monitoring method. According to the monitoring method, by virtue of a direct break-over voltage or current mode, a bypass is constructed at each corresponding element or load and used for monitoring the working state of the element or load, so that the monitoring method can be used for directly conducting a to-be-monitored element so as to detect or manage the real working state of the element and the load.
Description
Technical field
The present invention is related to a kind of monitoring and detection technique, especially provides a kind of monitoring for being applied to exchange and DC loop
Devices and methods therefor.
Background technology
The characteristic of correspondence difference electronic component, alterating and direct current with conversion application, are mutually extremely common in current electronic product
Application, for example, light emitting diode (Light Emitting Diode, LED) desk lamp from socket end obtain line voltage
The alternating voltage of input, through an AC/DC changeover switch, is converted to a unidirectional current for driving LED by (alternating voltage)
Pressure, if however, this application is extended to the hundreds of LED street lamps in a small towns, when failture evacuation to be carried out or maintenance,
Associated maintenance manufacturer is except learning the LED street lamps of damage in advance why in addition to small cup, it is necessary to disassemble street lamp internal circuit, Cai Nengliao
The LED street lamps for solving the damage are that DC loop is problematic, ac circuit is problematic or AC/DC changeover switch is damaged.Therefore, often
Secondary failture evacuation or maintenance task, associated maintenance manufacturer are required for carrying all outfits and part, expend sizable people
Power with into the action for being detected originally and monitored.
In addition, with progress and popularization, the efficiency more and more higher of opto-electronic conversion of heliotechnics, setting up solar photoelectric
The cost of converting system is also more and more lower, and more and more governments active development solar energy photoelectric conversion system encourage among the people invariably
Set up, be critical and solve the problems, such as Petrochemical pollution air to reduce the energy.
However, solar energy photoelectric conversion system extremely focuses on the area of acceptable illumination, therefore many solar photoelectrics turn
Change the roof that system is arranged at building mostly, or possess the region on vast innerland, also because of that, solar energy photoelectric conversion
Building for system is extremely to disperse, and is arranged at mostly the area of remote spaciousness, particularly relates to a large-scale solar photoelectric
Converting system, when failure problems occur, the technology of at present detection monitoring, it is impossible to the part of the damage that directly judges to be out of order, dimension
Repair team and have to go to scene and overhauled, and whole must carry all maintenances and get the raw materials ready, therefore, permanent one, maintenance
The time-consuming work for consuming cost again of task always.
For example, refer to shown in Fig. 1, general solar energy photoelectric conversion system includes a photovoltaic array 100, a direct current
Operational module 102, a DC-AC converter 104, an alternate current operation module 106 exchange output switch 108 with one.Photovoltaic array
100 are typically also referred to as solar panel, and when sunlight is irradiated in photovoltaic array 100, photovoltaic array 100 can carry out photoelectricity and turn
Change, convert sunlight into a unidirectional current, be input into DC-AC converter 104, then by DC-AC via DC operation module 102
Parallel operation 104 is converted to an alternating current transmission to operational module 106 is exchanged, and finally exchanges this by exchanging output switch 108 again
Mains system (not shown) outside electricity transmission (or peddling) to is (for example：The electric power system of Utilities Electric Co.).
For with current monitoring technology, it is to pass through a monitor 110 (for example mostly：Computer) it is connected to DC-AC
Parallel operation 104, when photo-translating system wherein ring knot breaks down, monitor 110 can receive a failure notification, and notify dimension
Repair team to be overhauled.Pit Crew simultaneously cannot know be actually that DC-AC converter 104 itself occurs event from the failure notification
Barrier, or other parts are (for example：102) DC operation module breaks down, and have to get the raw materials ready and together carry needed for by all maintenances
Toward scene.
Additionally, general solar energy photoelectric conversion systematic difference, its power supply (next from Utilities Electric Co.'s power plant conveying
Electricity) with peddle electric power be often it is independent.General commercial user with during Utilities Electric Co.'s application power supply, need in advance and Utilities Electric Co.
The size (that is, electricity consumption contract capacity) of application power consumption, when commercial user's power consumption exceedes apllied electricity consumption contract capacity
When, Utilities Electric Co. can give a chastening penalty, and this penalty is much larger than the amount of money peddled obtained by electric power.It is simple next
Say, if the commercial user itself has set up the solar energy photoelectric conversion system of 10 kilowatt-hours (KWh), while also to Utilities Electric Co.
Sign 30 kilowatt-hours of electricity consumption contract capacity；When the load of the commercial user has used 35 kilowatt-hours of power consumption, electricity
Power company then will carry out opening penalizing to the commercial user, and same time, photo-translating system still peddle 10 kilowatt-hours of electric power
Utilities Electric Co. is given, with the sale of electricity amount of money of current rewarding fund of the government, contractual line cannot be made up in fact.
Therefore, solar energy photoelectric conversion system relevant manufactures pole need to develop set of device or mechanism can with monitor in real time,
And detect inside photo-translating system the element of correspondence failure, as Pit Crew go out car maintenance and preparation of getting the raw materials ready according to
According to, or the power generation applications of active and effective management photo-translating system.
The content of the invention
In view of above-mentioned disappearance and invention motivation, the present inventor urgently considers to the greatest extent, develops finally the present invention.
One of present invention category is to provide a kind of monitoring device of power system management application, and which passes through to set up switch
Mode, sets up a bypass path (bypass) to each corresponding intrument in unified power system, drives corresponding device.
According to device embodiment one of provided by the present invention, the monitoring device of the present invention includes a controller, the controller
Including at least one switch, one end of the switch is attached to a load, and the other end of the switch is connected to confession should load electric
One of power supply, wherein, the controller is turned on and off this with correspondence and bears according to the operational order on or off switch
Carry.
Another category of the present invention is to provide a kind of monitoring device for being applied to photo-translating system, and which passes through to set up out
The mode of pass, sets up a bypass path to each counter element in a photo-translating system, monitors a photo-translating system
Working condition.
According to device embodiment one of provided by the present invention, the monitoring device of the present invention is applied to a photo-translating system,
The monitoring device includes a controller, the controller be connected to a mains system and including at least one first exchange bypass cock with
At least one second exchange bypass cock, a first end system of the first exchange bypass cock connect the photo-translating system always
One outfan of a-c transducer, one second end of the first exchange bypass cock then connect a load, the second exchange bypass
One first end of switch connects the first end of the first exchange bypass cock, the one second end connection of the second exchange bypass cock
One exchange output switch of the photo-translating system.
Wherein, the controller detects the mains system, and sends a control signal according to contract capacity rule, turns on
Or end first and second exchange bypass cock.
According to another device embodiment provided by the present invention, the monitoring device system of the present invention is applied to an opto-electronic conversion system
System, the photo-translating system have a photovoltaic array, a direct current operational module, a DC-AC converter, an alternate current operation module
Output switch is exchanged with one, the monitoring device includes a controller, the controller include at least one exchange bypass cock with
An at least direct current bypass cock.The exchange bypass cock connects one end of the direct current transducer and the alternate current operation module.This is straight
Stream bypass cock then connects the other end of the photovoltaic array and the DC-AC converter.The controller connects the DC-AC and changes
Device, to obtain one of DC-AC converter operation information, and sends the control signal of a correspondence according to the operation information, with
The on or off exchange bypass cock or the direct current bypass cock.The another category of the present invention is to provide one kind to be applied to light
The monitoring method of power conversion system, which detects the work of a photo-translating system by way of direct conducting voltage or electric current
Make state.
According to an embodiment of the method provided by the present invention, the monitoring method of the present invention, it is to be applied to an opto-electronic conversion system
System, the photo-translating system have a photovoltaic array, a direct current operational module, a DC-AC converter, an alternate current operation module
Output switch is exchanged with one, is included the step of the monitoring method one first operation information being obtained from the DC-AC converter, and is worked as
When first operation information is off-line state, turns on the DC-AC converter, the photovoltaic array and exchange with this after output switch, from
The DC-AC converter obtains one second operation information, when first operation information and second operation information are all off-line state
When, then judge the DC-AC converter failure.
In sum, by the monitoring method and its device of the present invention, can be by setting up a shunt paths (bypass)
Mode, directly turn on the element to be detected to find out the real work state of element or actual be driven element and pipe
Reason.
Description of the drawings
Fig. 1 is a known photo-translating system configuration diagram.
Fig. 2A is the embodiment schematic diagram of 7 string 3 of one of present invention the parallel connection type photo-translating system of type.
Fig. 2 B are another embodiment schematic diagram of 7 string 3 of one of present invention the parallel connection type photo-translating system of type.
Fig. 3 A are the flow chart of one of monitoring method of the present invention embodiment.
Sub-step schematic diagrams of Fig. 3 B for Fig. 3 step As S302.
Fig. 4 A are the flow chart of one of monitoring method of the present invention embodiment.
Fig. 4 B are the flow chart of one of monitoring method of the present invention embodiment.
Fig. 5 A are the schematic diagram of one of monitoring device of the present invention embodiment.
Fig. 5 B are the schematic diagram of one of monitoring device of the present invention embodiment.
Fig. 6 is the schematic diagram of another embodiment of monitoring device of the present invention.
【Main element symbol description】
100 photovoltaic arrays
102 DC operation modules
104 DC-AC converters
106 alternate current operation modules
108 exchange output switchs
110 monitors
20 photovoltaic arrays
22 DC operation modules
220 direct current diverters
222 electric fuses
224 choppers
24 DC-AC converters
26 alternate current operation modules
28 exchange output switchs
30 loads
32 ammeters
50 controllers
502 exchange bypass cocks
502A first exchanges bypass cock
502B second exchanges bypass cock
504 direct current bypass cocks
506 switches
52 exchange detection modules
522 alternating voltages detect port
524 alternating currents detect port
54 DC detecting modules
56 mixed-media network modules mixed-medias
542 DC voltages detect port
544 direct current detection ports
60 loads
62 power supplies
Specific embodiment
It is below the monitoring method and its device that are applied to a photo-translating system that the present invention is provided with embodiment.
Refer to shown in Fig. 2A, the parallel connection type photo-translating system of one 7 string 3 of Fig. 2A systems type.In the present embodiment, this
Parallel connection type photo-translating system is a known solar photoelectric electricity generation system, and which includes the photovoltaic array 20, always of three groups of parallel connections
Stream operational module 22, a DC-AC converter 24, an alternate current operation module 26 exchange output switch 28 with one.Chat for convenience of this case
State, the 2nd figure eliminates subelement (for example：Surging receptor in DC operation module 22, or in alternate current operation module 26
Mechanical watt-hour meter), only illustrated with square based on, but know the personage of this case technical field still can according to the content of this case offer,
This schema of arranging in pairs or groups understands the content of the present invention and can implement according to this.
Moreover, it is noted that the parallel connection type photo-translating system of 7 strings 3 type described in the present embodiment also can be according to
Demand is extended for the string number quantity in parallel with photovoltaic array 20 of any amount, or will be multiple parallel connection type photo-translating systems mutual
Combination forms the photo-translating system of a bigger output, therefore, the embodiment of 7 strings 3 photo-translating system is only that teaching is used,
Not to limit the present invention.
As shown in Figure 2 A, the DC operation module 22 includes three direct current diverters 220, respectively the direct current diverter 220 it
One end is connected with corresponding photovoltaic array 20 by an electric fuse 222.Respectively the other end of the direct current diverter 220 is breaking by one
Device 224 is connected with the DC-AC converter 24.The alternate current operation module 26 is connected to the DC-AC converter 24 and exchanges defeated with this
Go out between switch 28, the exchange output switch 28 is then connected to a mains system (for example：The power system of Utilities Electric Co.), to send out
Send (or peddling) electricity power.
Refer to shown in Fig. 2 B, monitoring device of the present invention is applied to above-mentioned photo-translating system, according to an embodiment, one
Monitoring device includes a controller 50, the controller 50 by an ammeter 32 be connected to a mains system (not shown) and including
At least one first exchange bypass cock 502A exchanges bypass cock 502B with one second, one of first exchange bypass cock 502A
First end system is connected the alternate current operation module 26 and output switch 28 is exchanged with this, one of first exchange bypass cock 502A second
One of end then one load 30 of connection, second exchange bypass cock 502B first end connects the ammeter 32, the second exchange bypass
One of switch 502B the second end connects the exchange output switch 28.
The controller 50 detects one of the mains system (such as by the ammeter 32) powering quantity (unit：It is kilowatt little
When), and according to contract capacity rule send the control signal controller 50 can through but not limited to RS485 with this first with
Second exchange bypass cock 502A, 502B connection, can also be wirelessly transferred or other wire transmission means, carry out on or off
First and second exchange bypass cock 502A, 502B.
When powering quantity is higher than contract capacity rule, the controller 50 sends the control signal controller 50 and can pass through
But first and second exchanges bypass cock 502A to be not limited to RS485 and this, 502B connections conducting first exchanges bypass cock 502A,
And while end second exchange bypass cock 502B, make the powering quantity decline, allow photovoltaic array 20 to assist to carry out load
Power supply.
In the same manner, when powering quantity recovers to less than contract capacity rule, then controller 50 sends another control signal
The controller 50 can exchange bypass cock 502B, the first exchange bypass cock through but not limited to RS485 with the conducting second
502A connect, can also be wirelessly transferred or other wire transmission means, conducting second exchange bypass cock 502B, and while cut
Stop first exchange bypass cock 502A, allow photovoltaic array 20 to return back to the state of sale of electricity.
It should be noted that the switching of above-mentioned embodiment only one stratum of instruction sheet, if photo-translating system is more than one
The large scale system of 20 parallel connection of photovoltaic array, the monitoring device of the present invention are able to the quantity by expanding exchange bypass cock 502, with
Carry out the framework of correspondence switching and management with power transmission.
Refer to shown in Fig. 2A and 3A, the monitoring method of the present invention is applied to above-mentioned photo-translating system, the monitoring side
Method including step：S300 obtains one first operation information from the DC-AC converter 24, wherein, first operation information includes
One off-line state, an error condition and a normal condition；S302 simultaneously turns on this when first operation information is off-line state
DC-AC converter 24 exchanges output switch 28 with the photovoltaic array 20 and the DC-AC converter 24 with this；S304 is straight from this
A-c transducer 24 obtain one second operation information, wherein, second operation information include an off-line state, an error condition and
One normal condition；And when first operation information is all off-line state with second operation information, S306 then judges that this is straight
24 failure of a-c transducer.
Refer to shown in Fig. 3 B, according to an embodiment, as the generating of photo-translating system need to work as orthogonal by sunlight
The operation information of stream transformer 24 is that off-line state, also a kind of relation for being possibly due to evening, therefore step S302 are separately wrapped
Include following sub-step：S3020 judges the photo-translating system one of residing time range at present；S3022 when the time range is
One daylight time, then the DC-AC converter 24 is simultaneously turned on the photovoltaic array 20 and the DC-AC converter 24 and the friendship
Stream output switch 28；Conversely, S3024 is a certain evening hours when the time range, then ignore the off-line state of the operation information.
Specifically, when it is off-line state to receive the first operation information, be actually to change because of DC-AC to differentiate
Device 24 there occurs other element failures or generation open circuit in failure, or photo-translating system in itself, and cause orthogonal stream
Transducer 24 is off-line state；Step S302 is, by way of setting up shunt paths (bypass), directly to allow photovoltaic array
20th, exchange output switch 28 to turn on DC-AC converter 24, disconnect
26 with the annexation of DC-AC converter 24, by photovoltaic array 20 because the DC supply input produced by opto-electronic conversion is to directly
A-c transducer 24.If 24 certain failure of DC-AC converter, then the acquired operation information of step S304 will be still offline
State.
If conversely, the not failure of DC-AC converter 24, the unidirectional current of input can allow DC-AC converter 24 to produce start,
So that the acquired operation information of step S304 is a normal condition, that is to say, that when the first operation information and the second operation information
When not consistent, just represent the DC-AC converter 24 and do not break down.Now just need further to go detection actually which
Individual link or element failure, cause the loop obstructed (open circuit) of photo-translating system, allow the first running of reception originally to believe
Breath is rendered as an off-line state.
Refer to shown in Fig. 4 A, the monitoring method separately includes step：S306 breaks when the second operation information is normal condition
Open the DC-AC converter 24 and the photovoltaic array 20 and this exchanges output switch 28；S308 sense the alternate current operation module 26 to
The exchange output switch 28 whether there is an alternating voltage；S310, when the alternating voltage is not present, then assert one from outside
It is connected to the mains system (not shown) escape of the exchange output switch 28；S312 is then sensed in the presence of the alternating voltage
The alternate current operation module 26 whether there is with the DC-AC converter 24 alternating current；S314 is not present when the alternating current
When, then judge that the alternate current operation module 26 breaks down.
Refer to shown in Fig. 4 B, the monitoring method further includes step：S316 judges the photovoltaic array 20 and the electric fuse 222
Whether concatenated two ends have a DC voltage；S318 assert the photovoltaic array 20 or the guarantor when DC voltage is not present
Dangerous silk 222 breaks down；S320 in the presence of DC voltage turns on DC-AC converter 24 and exchanges output switch 28；S322
One of sensing direct current diverter 220 DC current；S324 assert 224 failure of chopper when the DC current is not present；With
And S326 is in the presence of DC current, DC-AC converter 24 and the conducting for exchanging output switch 28 are disconnected.That is, work as unidirectional current
In the presence of stream, that is, it is not faulty to represent DC operation module 22, then release step S320 in detection process, with shunt paths
Mode turns on DC-AC converter 24 and exchanges output switch 28.
It should be noted that (step S320) conducting DC-AC converter 24 why being needed before execution step S322 and being handed over
Stream output switch 28, main reason is that in guaranteeing detection process, will not be subject to disturbing for alternate current operation module 26, to set up peace
Full current loop (treating as giving the rear end that load is mounted on DC-AC converter 24).However, ignoring step S320 in big portion
Under the situation divided, the testing result of step S322 can't be affected.
Additionally, when the operation information of DC-AC converter 24 is error condition or normal condition, representing DC-AC and changing
Essence does not break down device 24, and here omits description when the follow-up place of the operation information for receiving error condition or normal condition
Reason, however, know that the personage of the technical field of this case presumably so still understands, even if received operation information is wrong shape
State, can still enforce the detection of step S306 to S326, further confirm that alternate current operation module 26 and DC operation module 22
Whether loop is normal.
In sum, in the case that DC-AC converter 24 confirms not having failure, by above-mentioned steps S306 to S314
In photo-translating system being further confirmed that, whether the loop of alternate current operation module 26 breaks down, and step S316 is to step
S326 is then for detecting whether the loop of DC operation module 22 breaks down.That is, monitoring method of the present invention passes through
The mode of subregion segmentation, is detected to each element in overall photo-translating system respectively, as long as finding out the problem points of real failure,
Pit Crew just can be directed to the problem of failure, prepare getting the raw materials ready to scene needed for correspondence and changed or disassembled.
Refer to the schematic diagram of one of Fig. 5 A, Fig. 5 A systems monitoring device of the present invention embodiment.In this embodiment, monitoring device
System is applied to a photo-translating system, is embodied as the monitoring method of above-mentioned steps S300 to S326 with hard ware.Therefore, below
Explanation description to monitoring device will focus on the definition and description of element, and detailed operation steps are then no longer tired out to be stated.This
Outward, it is to simplify loaded down with trivial details repeated description, the photo-translating system of the present embodiment and schema is only with the photo-translating system of parallel connection type
To illustrate, similar elements then use identical label；When the monitoring device of the practical application present invention, 7 strings 3 of Fig. 2A are simultaneously
Photo-translating system has no any essence difference with the photo-translating system in parallel of Fig. 5 A.
It should be noted that there are this case technical field usual those skilled in the art to know, the monitoring device and method of the present invention
The photo-translating system of parallel connection type, self reliance type or mixed type (in parallel/independent) is applicable to, to avoid a tediously long description piece
Width, therefore illustrated with the photo-translating system of parallel connection type.
The monitoring device includes a controller 50, and the controller 50 includes at least one exchange bypass cock 502 and at least
Direct current bypass cock 504.The exchange bypass cock 502 is connected to one end of the DC-AC converter 24 and the alternate current operation module
26.The direct current bypass cock 504 is then connected to the other end of the photovoltaic array 20 and the DC-AC converter 24, that is, connects respectively
Connect the electric fuse 222 and the 224 opposite sides end of chopper.In this embodiment, exchange bypass cock 502 and direct current bypass cock
504 can be a kind of electromagnetic switch.
The controller 50 connects the DC-AC converter 24, to obtain one of the DC-AC converter 24 operation information,
And the control signal of a correspondence is sent according to the operation information.According to an embodiment, the controller 50 can be through but not limited to
RS485 is connected with the DC-AC converter 24, can also be wirelessly transferred or other wire transmission means.The operation information includes
One off-line state, a normal condition and an error condition.
Wherein, the control signal system of the controller 50 is according to actually detected demand, and which includes that an exchange bypass cock is opened
Signal, one exchange bypass cock shutdown signal, a direct current bypass cock open signal, a direct current bypass cock shutdown signal, one
Alternating voltage detection signal, an alternating current detection signal, a direct current voltage detection signal and a direct current current detection signal.
Monitoring method as described in step S300 to S306, when operation information is an off-line state, the controller 50
According to the off-line state of the operation information, sending the control signal controller 50 can be handed over the bypass through but not limited to RS485
Stream switch 502 is connected with the direct current bypass cock 504, can also be wirelessly transferred or other wire transmission means, be separately turned on
(ON) the exchange bypass cock 502 and the direct current bypass cock 504 so that the DC-AC converter 24 directly with the photovoltaic array
20 exchange output switch 28 with this turns on, and confirms that whether the operation information of DC-AC converter 24 is still an off-line state.
Separately including an exchange detection module 52 and a direct current detection module 54, the exchange detection module 52 is the monitoring device
To perform the monitoring method as described in step S306 to S314, the DC detecting module 54 is to perform such as step S316 extremely
Monitoring method described in S326.
According to an embodiment, the exchange detection module 52 is the connection controller 50 and the photo-translating system, and is received
Detection module 52 can be exchanged through but not limited to RS485 from 50 transmitted control signal controller 50 of the controller to connect with this
Connect, can also be wirelessly transferred or other wire transmission means, the exchange detection module 52 include an at least alternating voltage detect
Port 524 is detected with an at least alternating current in port 522.The alternating voltage detection port 522 is to detect the alternate current operation
One of module 26 alternating voltage state, the alternating current detection port 524 is to detect that one of the alternate current operation module 26 is handed over
Stream current status (refer to above-mentioned step S306 to S314).
Wherein, with alternating current, alternating voltage detection port 522 detects that the quantity system of port 524 is changed corresponding to DC-AC
The quantity of device 24.
Wherein, the alternating voltage detection port 522 is to be connected to first alternating current of one of the alternate current operation module 26
Pinch roller askes position ACV+ and one second alternating voltage poll position ACV-, and which is to sense the first alternating voltage poll position
The voltage of ACV+ and 2 points of the second alternating voltage poll position ACV-.Wherein, as shown in Figure 5A, the first alternating voltage poll
Position ACV+ may be defined as the first loop between DC-AC converter 24 and the alternate current operation module 26, the second alternating current pinch roller
Ask position ACV- and may be defined as second servo loop between DC-AC converter 24 and the alternate current operation module 26.
Wherein, the alternating current detection port 524 is to be detected (for example by an alternating current：Current transformer) it is connected to
First alternating current poll position ACA+ and one second is handed over one of between the DC-AC converter 24 and the alternate current operation module 26
Stream electric current poll position ACA-.
According to an embodiment, the DC detecting module 54 is the connection controller 50 and the photo-translating system, and is received
Can connect with the DC detecting module 54 through but not limited to RS485 from 50 transmitted control signal controller 50 of the controller
Connect, can also be wirelessly transferred or other wire transmission means.The DC detecting module 54 includes an at least direct current voltage detecting
Port 542 and an at least direct current detection port 544, the DC voltage detection port 542 is to detect the DC operation
One of module 22 DC voltage state, the direct current detection port 544 be detect the DC operation module 22 always
Stream current status (refer to above-mentioned step S306 to S314).
Wherein, number of the quantity system of DC voltage detection port 542 corresponding to the electric fuse 222 of connection photovoltaic array 20
Amount.The quantity then corresponding to direct current diverter 220 of direct current detection port 544.For example, monitoring device is applied to into one
7 string 3 and photo-translating system (such as the 2nd figure) when, DC voltage detection port 542 quantity just be three.
Wherein, the DC voltage detection port 542 is to be connected to one first DC voltage poll position DCV+ and
Second DC voltage poll position DCV-.As shown in Figure 5, the first DC voltage poll position DCV+ systems are defined as direct current work
Make in module 22, between the electric fuse 222 and direct current diverter 220.The second DC voltage poll position DCV- systems are defined as
Photovoltaic array 20 connects the other end of electric fuse 222.
Wherein, the direct current detection port 544 is to be connected to one first DC current poll position DCA+ and
Second DC current poll position DCA-, as shown in Figure 5, the first DC current poll position DCA+ and the second DC current
Poll position DCA- systems are defined as the two ends of the direct current diverter 220.
In addition, in an embodiment, the monitoring device separately includes a mixed-media network modules mixed-media 56, the mixed-media network modules mixed-media 56 is able to orthogonal
The operation information of stream transformer 24, DC current, DC voltage, alternating current and alternating voltage are transmitted through the network to outside one
Watch-dog (not shown).
Refer to shown in Fig. 5 B, the schematic diagram of another embodiment of Fig. 5 B systems monitoring device of the present invention.Substantially, Fig. 5 B with
Fig. 5 A are substantially the same, Main Differences be using upper difference, represented by Fig. 5 A for single phase ac pyroelectric monitor application, and scheme
5B applications then for three-phase alternating current pyroelectric monitor.
As shown in Figure 5 B, the alternating voltage detection port 522 is to connect the friendship of one of alternate current operation module 26 first respectively
Stream voltage poll position ACVR, one second alternating voltage poll position ACVT and one the 3rd alternating voltage poll position ACVS.Should
Alternating current detection port 524 is to be detected (for example by an alternating current：Current transformer) it is connected to the alternate current operation module
One of 26 first alternating current poll position ACAR+, one second alternating current poll position ACAR-, one the 3rd alternating current wheel
Ask position ACAT+, one the 4th alternating current poll position ACAT- and one the 5th alternating current poll position ACAS+, one the 6th friendship
Stream electric current poll position ACAS-.
Understood by Fig. 5 A and Fig. 5 B it is recognised that the number of port 524 is detected in alternating voltage detection port 522 with alternating current
Measure in addition to the quantity of correspondence DC-AC converter 24, separately can be because the application purpose such as single-phase alternating current or three-phase alternating current be different
And it is different.
Additionally, by above-mentioned explanation, knowing that the personage of this case technical field must will appreciate that, the monitoring device of the present invention
The monitoring of alternating current-direct current loop can be carried out to other electronic systems.As described previously, when an illumination with hundreds of LED street lamps
System, each LED street lamps have independent AC/DC changeover switch 24, alternate current operation module 26 and DC operation module 22, controller
50th, exchange detection module 52 to be sequentially monitored which with DC detecting module 54, and by directly power supply and alternating current-direct current poll
Mode, obtain the work shape of the AC/DC changeover switch 24 of each LED street lamps, alternate current operation module 26 and DC operation module 22
State.
Refer to shown in Fig. 6, the schematic diagram of another embodiment of Fig. 6 systems monitoring device of the present invention.The monitoring dress of the present invention
Another extensible application is put to an appliance system, as shown in fig. 6, there are an appliance system multiple direct current supply electrical equipment to be exchanged with multiple
Powered appliance, in this all unified definition for load.In this embodiment, monitoring device includes a controller 50, and the controller 50 is wrapped
At least one switch 506 is included, one end of the switch 506 is attached to a load 60, and the other end of the switch 506 is connected to confession should
Load one of 60 electric power power supply 62, wherein, the controller 50 according to the operational order on or off switch 506, with
Correspondence is turned on and off the load 60.
However, the operational order of controller 50 can be implemented by setting up a User's Interface, for example：Arrange one red
On controller 50, a user is able to by an infrared transmitter (remote control) outer line receiver, is translated by a coding language
Code rule, choose correspondence load 60 (electrical equipment) being turned on and off.
Therefore, the monitoring device of the present invention can be through but not limited to by the control signal controller 50 of controller 50
RS485 and the bypass alternating-current switch 502, the direct current bypass cock 504, this exchange detection module 52 and the DC detecting module 54
Connection, can also be wirelessly transferred or other wire transmission means, control exchange bypass cock 502, direct current bypass are opened respectively
504, the exchange detection module 52 and the DC detecting module 54 are closed, in the way of reaching subregion and be segmented, in total system
Each element is detected or reality is driven and management to each element.
Only as described above, only the preferred embodiments of the invention, when can not to limit the scope that the present invention can be implemented,
It is all know this case field have usual those skilled in the art the change that can substantially make and modification, all should be regarded as not departing from the present invention real
Matter content.
Claims (14)
1. a kind of monitoring device, is applied to a photo-translating system, and the monitoring device includes a controller, and the controller passes through one
Ammeter is connected to a mains system, and the controller includes an at least switch, and one end of the switch is connected to a load, the switch
The other end be connected to for should load electric a power supply, wherein, the controller detect the mains system one power supply electricity
Amount, and according to contract capacity rule, with the operational order on or off switch, the load is turned on and off with correspondence,
Wherein The Jian Ce Installed put and further include:
One first exchange bypass cock, a first end of the first exchange bypass cock connect an alternate current operation module, and this first
One second end of bypass cock then connects a load；And
One second exchange bypass cock, a first end of the second exchange bypass cock connect the ammeter, the second exchange bypass
The one second end connection one of switch exchanges output switch；
Wherein, the controller detects the powering quantity of the mains system, and sends a control letter according to the contract capacity rule
Number, carry out the on or off first exchange bypass cock second bypass cock is exchanged with this；
Wherein, when the powering quantity is higher than the contract capacity rule, the controller sends a control signal and turns on first friendship
Stream bypass cock, and while end the second exchange bypass cock, make the powering quantity decline, allow a photovoltaic array to assist to this
Load is powered.
2. monitoring device as claimed in claim 1, wherein, when the powering quantity recovers to less than contract capacity rule,
Then the controller sends a control signal, turns on the second exchange bypass cock, and while ends the first exchange bypass cock.
3. a kind of monitoring method, is applied to a photo-translating system, and the photo-translating system has a photovoltaic array, a direct current work
Making module, a DC-AC converter, an alternate current operation module and output switch being exchanged with one, the monitoring method includes：
One first operation information is obtained from the DC-AC converter, wherein, first operation information includes an off-line state, wrong
The state of mistake and a normal condition；
When first operation information is off-line state, the DC-AC converter is simultaneously turned on the photovoltaic array and the orthogonal
Stream transformer exchanges output switch with this；
One second operation information is obtained from the DC-AC converter, wherein, second operation information include an off-line state, one
Error condition and a normal condition；And
When first operation information is all off-line state with second operation information, then the DC-AC converter failure is judged.
4. monitoring method as claimed in claim 3, wherein, this simultaneously turn on the DC-AC converter and the photovoltaic array and
The step of DC-AC converter exchanges output switch with this, further includes：
Judge a photo-translating system time range residing at present；
When the time range is a daylight time, then the DC-AC converter is simultaneously turned on the photovoltaic array and the orthogonal stream
Transducer exchanges output switch with this；And
When the time range is a certain evening hours, then ignore the off-line state of first operation information.
5. monitoring method as claimed in claim 3, separately includes：
When the second operation information is normal condition, disconnects the DC-AC converter and the photovoltaic array and this exchanges to export and opens
Close；
The alternate current operation module is sensed to the exchange output switch with the presence or absence of there is an alternating voltage；
When the alternating voltage is not present, then one is assert from the mains system escape for being externally attached to the exchange output switch；
In the presence of the alternating voltage, then the alternate current operation module and the DC-AC converter are sensed with the presence or absence of there is an alternating current
Stream；And
When the alternating current is not present, then judge that the alternate current operation module breaks down.
6. monitoring method as claimed in claim 5, separately includes：
Judge whether the photovoltaic array two ends concatenated with an electric fuse have a DC voltage；
When DC voltage is not present, assert that the photovoltaic array or the electric fuse break down；
In the presence of DC voltage, one of sensing direct current diverter DC current；
When the DC current is not present, a circuit breaker failure is assert；And
In the presence of DC current, DC-AC converter and the conducting for exchanging output switch are disconnected.
7. monitoring method as claimed in claim 6, separately includes：
In the presence of DC voltage, turn on the DC-AC converter and output switch is exchanged with this.
8. a kind of monitoring device, is applied to a photo-translating system, and the photo-translating system has a photovoltaic array, a direct current
Operational module, a DC-AC converter, an alternate current operation module exchange output switch with one, and the monitoring device includes：
One controller, the controller include：
At least one exchange bypass cock, side connect the DC-AC converter and the alternate current operation module, and opposite side connects the friendship
Stream output switch；
An at least direct current bypass cock, side connect one end of the photovoltaic array and the DC operation module, and opposite side connection should
The other end of DC-AC converter and the DC operation module, wherein, the controller connects the DC-AC converter, to take
An operation information of the DC-AC converter is obtained, and a corresponding control signal is sent according to the operation information.
9. monitoring device as claimed in claim 8, wherein, the operation information includes an off-line state, a normal condition and
Error condition.
10. monitoring device as claimed in claim 8, wherein, the control signal include an exchange bypass cock open signal, one
Exchange bypass cock shutdown signal, a direct current bypass cock open signal, a direct current bypass cock shutdown signal, an alternating voltage
Detection signal, an alternating current detection signal, a direct current voltage detection signal and a direct current current detection signal.
11. monitoring devices as claimed in claim 8, separately include：
One exchange detection module, connects the controller and the alternate current operation module, and is received from the transmitted control of the controller
Signal；And
One direct current detection module, connects the controller and the DC operation module, and is received from the transmitted control of the controller
Signal.
12. monitoring devices as claimed in claim 11, wherein, the DC detecting module includes：
An at least direct current voltage detecting port, is connected to one first DC voltage poll position and one second unidirectional current pinch roller
Ask position；And
An at least direct current detection port, is connected to one first DC current poll position and one second DC current poll bit
Put.
13. monitoring devices as claimed in claim 11, wherein, the exchange detection module includes：
An at least alternating voltage detects port, be connected to one first alternating voltage poll position of the alternate current operation module with
One second alternating voltage poll position, to sense the first alternating voltage poll position and the second alternating voltage poll bit
Put 2 points of voltage；And
An at least alternating current detects port, is connected to one first alternating current poll position of the alternate current operation module with one the
Two alternating current poll positions, to the alternating current for sensing the alternate current operation module.
14. monitoring devices as claimed in claim 11, wherein, the exchange detection module includes：
Three alternating voltages detect port, be connected to the alternate current operation module one first alternating voltage poll position, one the
Two alternating voltage poll positions and one the 3rd alternating voltage poll position；And
Six alternating currents detect port, are connected to one first alternating current poll position, one second friendship of the alternate current operation module
Stream electric current poll position, one the 3rd alternating current poll position, one the 4th alternating current poll position and one the 5th alternating current
Poll position, one the 6th alternating current poll position, to the alternating current for sensing the alternate current operation module.
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| CN201210066179.1A CN103311959B (en) | 2012-03-14 | 2012-03-14 | Monitoring device and monitoring method |
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| CN201210066179.1A CN103311959B (en) | 2012-03-14 | 2012-03-14 | Monitoring device and monitoring method |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1180261A (en) * | 1996-08-30 | 1998-04-29 | 佳能株式会社 | Power control apparatus for solar power generation system |
| TW201112559A (en) * | 2009-07-27 | 2011-04-01 | Rwe Ag | Device and method for providing a quantity of energy in said supply device for a consumer |
| CN102158129A (en) * | 2011-01-30 | 2011-08-17 | 浙江昱能光伏科技集成有限公司 | Solar photovoltaic system and fault detection method thereof |
| CN201994727U (en) * | 2011-04-11 | 2011-09-28 | 周锡卫 | New energy power and network power intelligent allocation power supply system |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3308434B2 (en) * | 1995-10-19 | 2002-07-29 | ミサワホーム株式会社 | Abnormality detector for solar panel |
| CN102034143A (en) * | 2010-10-26 | 2011-04-27 | 中华电信股份有限公司 | Expense-reduction type energy-saving management system and method |
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2012
- 2012-03-14 CN CN201210066179.1A patent/CN103311959B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1180261A (en) * | 1996-08-30 | 1998-04-29 | 佳能株式会社 | Power control apparatus for solar power generation system |
| TW201112559A (en) * | 2009-07-27 | 2011-04-01 | Rwe Ag | Device and method for providing a quantity of energy in said supply device for a consumer |
| CN102158129A (en) * | 2011-01-30 | 2011-08-17 | 浙江昱能光伏科技集成有限公司 | Solar photovoltaic system and fault detection method thereof |
| CN201994727U (en) * | 2011-04-11 | 2011-09-28 | 周锡卫 | New energy power and network power intelligent allocation power supply system |
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| CN103311959A (en) | 2013-09-18 |
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