CN103248003B - The power supply input protector of outdoor integrated cabinet and method - Google Patents
The power supply input protector of outdoor integrated cabinet and method Download PDFInfo
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- CN103248003B CN103248003B CN201210023024.XA CN201210023024A CN103248003B CN 103248003 B CN103248003 B CN 103248003B CN 201210023024 A CN201210023024 A CN 201210023024A CN 103248003 B CN103248003 B CN 103248003B
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Abstract
The embodiment of the invention discloses a kind of power supply input protector and method of outdoor integrated cabinet, wherein, be provided with the miscellaneous equipment beyond communication equipment as visual plant and the described communication equipment as insignificant equipment in described outdoor integrated cabinet, the power input line road of described outdoor integrated cabinet by main channel circuit respectively to visual plant with power as insignificant equipment; Whether described method comprises: detect main channel circuit by the first electric-leakage detection circuit and leak electricity; If main channel circuit leaks electricity; the power supply to visual plant and insignificant equipment of main channel circuit is disconnected by switch protecting unit; and visual plant switching is connected to escape truck circuit, the power input line road of described outdoor integrated cabinet is powered to visual plant by described escape truck circuit.The embodiment of the present invention can avoid outdoor integrated cabinet due to do not configure batteries normal and be interfered and protect and produce tripping operation time the communication service that causes interrupt.
Description
Technical field
The present invention relates to the communication technology, especially a kind of power supply input protector of outdoor integrated cabinet and method.
Background technology
Along with the propelling that telecommunication department " light entering and copper back " works, the communication equipment be originally arranged in communications equipment room is more and more installed in outdoor integrated cabinet.Particular surroundings residing for outdoor integrated cabinet, in order to protect the person and device security, requires during design outdoor integrated cabinet to install earth leakage protective device in civil power point of incoming cables.But existing earth leakage protective device is implemented except available protecting except there is electric leakage at power consumption equipment; also usually because be interfered and misoperation; particularly at thunderstorm season in summer; frequently there is trip protection situation by thunder and lightning interference in earth leakage protective device, will affect the power supply of power consumption equipment in outdoor integrated cabinet after earth leakage protective device tripping operation.
Afterwards, need manually to arrive the problem of on-the-spot reset power transmission after earth leakage protective device trips to solve, prior art proposed auto recloser.But auto recloser there will be of short duration power failure when trip protection, then automatic closing power transmission again, has saved the artificial operation to on-the-spot reset power transmission.
Realizing in process of the present invention, inventor finds that prior art at least exists following problem:
That earth leakage protective device or auto recloser alternating current when protecting all can have a power failure; often batteries is not configured in present outdoor integrated cabinet; for the integrated machine cabinet not configuring batteries; power failure will cause the communication equipment in integrated machine cabinet to obtain power supply; thus communication equipment cannot normally be worked; communication service is caused to be interrupted; communication service is interrupted have impact on the normal use of user to communication service frequently; reflect larger; complain more, bring very large pressure to service and maintenance department.
Summary of the invention
Embodiment of the present invention technical problem to be solved is: the power supply input protector and the method that provide a kind of outdoor integrated cabinet, with avoid outdoor integrated cabinet due to do not configure batteries normal and be interfered and protect and produce tripping operation time the communication service that causes interrupt.
The power supply input protection method of a kind of outdoor integrated cabinet that the embodiment of the present invention provides, be provided with the miscellaneous equipment beyond communication equipment as visual plant and the described communication equipment as insignificant equipment in described outdoor integrated cabinet, the power input line road of described outdoor integrated cabinet by main channel circuit respectively to visual plant with power as insignificant equipment; Described method comprises:
Detect main channel circuit by the first electric-leakage detection circuit whether to leak electricity;
If main channel circuit leaks electricity; the power supply to visual plant and insignificant equipment of main channel circuit is disconnected by switch protecting unit; and visual plant switching is connected to escape truck circuit, the power input line road of described outdoor integrated cabinet is powered to visual plant by described escape truck circuit.
The power supply input protector of a kind of outdoor integrated cabinet that the embodiment of the present invention provides, the miscellaneous equipment beyond the communication equipment as visual plant and the described communication equipment as insignificant equipment is provided with in described outdoor integrated cabinet, described power supply input protector comprises switch protecting unit, described switch protecting unit is accessed by escape truck circuit and main channel circuit in the power input line road of described outdoor integrated cabinet, described switch protecting unit is connected with visual plant, by second channel circuit and insignificant equipment connection by first passage circuit;
Described main channel circuit is provided with the first electric-leakage detection circuit for carrying out detection of electrical leakage to main channel circuit;
Described escape truck circuit is provided with the second electric-leakage detection circuit for carrying out detection of electrical leakage to emergent port line;
When first electric-leakage detection circuit does not detect that electric leakage occurs main channel circuit, described switch protecting unit connects described main channel circuit and first passage circuit and described main channel circuit and second channel circuit, and the power input line road of described outdoor integrated cabinet is powered to visual plant and insignificant equipment respectively by described main channel circuit, first passage circuit and second channel circuit; When first electric-leakage detection circuit detects that electric leakage occurs main channel circuit; described switch protecting unit disconnects the connection of described main channel circuit and first passage circuit and second channel circuit; and first passage circuit switching is switched to escape truck circuit, the power input line road of described outdoor integrated cabinet is powered to visual plant by described escape truck circuit and first passage circuit.
The power supply input protector of the outdoor integrated cabinet provided based on the above embodiment of the present invention and method, power consumption equipment in outdoor integrated cabinet is divided into visual plant and insignificant equipment, communication equipment is wherein visual plant, under normal circumstances, that is: when there is not electric leakage with thunder and lightning disturbed condition, the power input line road of outdoor integrated cabinet by main channel circuit respectively to visual plant with power as insignificant equipment, detect main channel circuit by the first electric-leakage detection circuit and whether leak electricity; If main channel circuit leaks electricity; the power supply to visual plant and insignificant equipment of main channel circuit is disconnected by switch protecting unit; and visual plant switching is connected to escape truck circuit, the power input line road of outdoor integrated cabinet is powered to visual plant by escape truck circuit.Pass through the embodiment of the present invention; achieve the power protection to power consumption equipment in outdoor integrated cabinet; and maintain in outdoor integrated cabinet to power as the communication equipment of visual plant while protection and do not interrupt, cause the defect of communication equipment power failure when compensate for the action of prior art apparatus for protecting power supply.Compared with prior art, avoid outdoor integrated cabinet due to do not configure batteries normal and be interfered and protect and produce tripping operation time the communication service that causes interrupt, and thus to the inconvenience that user brings.Because electric leakage in practical application mostly occurs at the insignificant such as air-conditioning, illumination equipment, the less electric leakage of communication equipment, visual plant separates with insignificant equipment and powers by the present invention, ensures the power supply to communication equipment, and reducing insignificant equipment affects the power supply of visual plant.
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the flow chart of a power supply input protection method embodiment of outdoor integrated cabinet of the present invention.
Fig. 2 is the flow chart of another embodiment of power supply input protection method of outdoor integrated cabinet of the present invention.
Fig. 3 is the structural representation of a power supply input protector embodiment of outdoor integrated cabinet of the present invention.
Fig. 4 is the structural representation of another embodiment of power supply input protector of outdoor integrated cabinet of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Fig. 1 is the flow chart of a power supply input protection method embodiment of outdoor integrated cabinet of the present invention.Wherein, the miscellaneous equipment beyond the communication equipment as visual plant and the communication equipment as insignificant equipment is provided with in outdoor integrated cabinet, that is:, when disturbing without electric leakage and thunder and lightning, the power input line road of outdoor integrated cabinet is powered to visual plant and insignificant equipment respectively by main channel circuit.Wherein, when occurring that thunder and lightning disturbs, electric-leakage detection circuit is detected as and leaks electricity.As shown in Figure 1, the power supply input protection method of this embodiment comprises:
101, detect main channel circuit by the first electric-leakage detection circuit and whether leak electricity.
102; if main channel circuit leaks electricity; the power supply to visual plant and insignificant equipment of main channel circuit is disconnected by switch protecting unit; and visual plant switching is connected to escape truck circuit, the power input line road of outdoor integrated cabinet is powered to visual plant by escape truck circuit.
Based on the power supply input protection method of the outdoor integrated cabinet that the above embodiment of the present invention provides, power consumption equipment in outdoor integrated cabinet is divided into visual plant and insignificant equipment, communication equipment is wherein visual plant, under normal circumstances, that is: when there is not electric leakage with thunder and lightning disturbed condition, the power input line road of outdoor integrated cabinet by main channel circuit respectively to visual plant with power as insignificant equipment, detect main channel circuit by the first electric-leakage detection circuit and whether leak electricity; If main channel circuit leaks electricity; the power supply to visual plant and insignificant equipment of main channel circuit is disconnected by switch protecting unit; and visual plant switching is connected to escape truck circuit, the power input line road of outdoor integrated cabinet is powered to visual plant by escape truck circuit.Pass through the embodiment of the present invention; achieve the power protection to power consumption equipment in outdoor integrated cabinet; and maintain in outdoor integrated cabinet to power as the communication equipment of visual plant while protection and do not interrupt, cause the defect of communication equipment power failure when compensate for the action of prior art apparatus for protecting power supply.Avoid outdoor integrated cabinet due to do not configure batteries normal and be interfered and protect and produce tripping operation time the communication service that causes interrupt, and thus to the inconvenience that user brings.Because electric leakage in practical application mostly occurs at the insignificant such as air-conditioning, illumination equipment, the less electric leakage of communication equipment, visual plant separates with insignificant equipment and powers by the present invention, ensures the power supply to communication equipment, and reducing insignificant equipment affects the power supply of visual plant.
Fig. 2 is the flow chart of another embodiment of power supply input protection method of outdoor integrated cabinet of the present invention.Wherein, the miscellaneous equipment beyond the communication equipment as visual plant and the communication equipment as insignificant equipment is provided with in outdoor integrated cabinet, under normal circumstances, that is:, when disturbing without electric leakage and thunder and lightning, the power input line road of outdoor integrated cabinet is powered to visual plant and insignificant equipment respectively by main channel circuit.Wherein, when occurring that thunder and lightning disturbs, electric-leakage detection circuit is detected as and leaks electricity.As shown in Figure 2, the power supply input protection method of this embodiment comprises:
201, detect main channel circuit by the first electric-leakage detection circuit and whether leak electricity, and gather the work state information of lightning protection device by switch protecting unit.
Exemplarily; in the operation of 201; can according to presetting; whether leaked electricity by the first electric-leakage detection circuit detection main channel circuit in real time or regularly; also can in real time or timing gather the work state information of lightning protection device by switch protecting unit, between these two operations and and other operate between not life period ordinal relation.
202, according to the testing result of the first electric-leakage detection circuit, identify whether main channel circuit leaks electricity.If main channel circuit leaks electricity, perform the operation of 203.Otherwise, if main channel circuit leaks electricity, do not perform the follow-up flow process of the present embodiment, keep outdoor integrated cabinet power input line road by main channel circuit respectively to visual plant with power as insignificant equipment.
203, disconnect the power supply to visual plant and insignificant equipment of main channel circuit by switch protecting unit, and whether be in closure state according to the operating state of the work state information identification lightning protection device of lightning protection device.If the operating state of collection lightning protection device is in closure state, illustrates and strong lightening strikes does not occur, perform the operation of 204.Otherwise, if the operating state of lightning protection device is in off-state, do not perform the follow-up flow process of the present embodiment.
Gather the work state information of lightning protection device simultaneously; when in strong thunder and lightning invasion and attack situation; the protection switch disjunction of lightning protection device; the operating state of lightning protection device is in off-state; switch protecting unit does not switch to the operation of escape truck circuit fast to visual plant; main channel circuit is stopped power supply together with escape truck circuit, the preferential security of operation ensureing communication equipment in strong thunder and lightning situation.
204, by switch protecting unit, visual plant switching is connected to escape truck circuit, the power input line road of outdoor integrated cabinet is powered to visual plant by escape truck circuit.
205, by the second electric-leakage detection circuit, detect escape truck circuit and whether leak electricity.If escape truck circuit leaks electricity, perform the operation of 206.Otherwise, if escape truck circuit leaks electricity, perform the operation of 207.
206, disconnect the connection between escape truck circuit and visual plant by switch protecting unit, stop the power input line road of outdoor integrated cabinet by escape truck circuit to the power supply of visual plant.Afterwards, the follow-up flow process of the present embodiment is not performed.
207, identify whether the power supply duration of escape truck circuit to visual plant reaches the first preset duration, such as, can be set to 1 to 8 hour, and can adjust according to the actual requirements.If the power supply duration of escape truck circuit to visual plant does not reach the first preset duration, keep the power input line road of outdoor integrated cabinet is powered to visual plant by escape truck circuit.When the power supply duration of escape truck circuit to visual plant reaches the first preset duration, perform the operation of 208.
208, by switch protecting unit, visual plant is switched back main channel circuit, the power input line road of outdoor integrated cabinet is powered to visual plant by main channel circuit, and whether leaked electricity by the first electric-leakage detection circuit detection main channel circuit.If main channel circuit leaks electricity, perform the operation of 204.Otherwise, if main channel circuit leaks electricity, perform the operation of 209.
209, connect main channel circuit and insignificant equipment by switch protecting unit, recover main channel circuit to the power supply of insignificant equipment.
Unrestricted according to an example of the embodiment of the present invention; state in the power supply input protection method of each embodiment outdoor integrated cabinet on the invention; can also when detecting that electric leakage occurs main channel circuit or when electric leakage occurs escape truck circuit; carry out electric leakage alarming prompting; there is danger of hazardous electrical discharges in prompting outdoor integrated cabinet; specifically can carry out on-the-spot electric leakage alarming prompting; also this electric leakage alarming can be reported to point out to Surveillance center; or; also can, when carrying out the prompting of on-the-spot electric leakage alarming, report this electric leakage alarming to point out to Surveillance center simultaneously.
In addition; unrestricted according to another example of the embodiment of the present invention; when main channel circuit and escape truck circuit all occur to leak electricity; the power supply of main channel circuit to visual plant and insignificant equipment can be recovered after the second preset duration, and perform the power supply input protection method flow of the various embodiments described above outdoor integrated cabinet of the present invention.The second preset duration wherein relative to the first preset duration can arrange longer, such as, 24 hours etc.
Fig. 3 is the structural representation of a power supply input protector embodiment of outdoor integrated cabinet of the present invention.The power supply input protector of this embodiment can be used in the present invention the flow process of above-mentioned each power supply input protection embodiment of the method.Wherein, be provided with in outdoor integrated cabinet as visual plant communication equipment with as insignificant equipment, miscellaneous equipment beyond communication equipment.Insignificant equipment such as air-conditioning, lighting apparatus etc. wherein.As shown in Figure 3; the power supply input protector of this embodiment comprises switch protecting unit 301; switch protecting unit 301 is accessed by escape truck circuit and main channel circuit in the power input line road of outdoor integrated cabinet; switch protecting unit 301 is connected with visual plant, by second channel circuit and insignificant equipment connection by first passage circuit.
Wherein, main channel circuit is provided with the first electric-leakage detection circuit 302 for carrying out detection of electrical leakage to main channel circuit.Escape truck circuit is provided with the second electric-leakage detection circuit 303 for carrying out detection of electrical leakage to emergent port line.
When first electric-leakage detection circuit 302 does not detect that electric leakage occurs main channel circuit; switch protecting unit 301 connects main channel circuit and first passage circuit and main channel circuit and second channel circuit, and the power input line road of outdoor integrated cabinet is powered to visual plant and insignificant equipment respectively by main channel circuit, first passage circuit and second channel circuit.When first electric-leakage detection circuit 302 detects that electric leakage occurs main channel circuit; switch protecting unit 301 disconnects the connection of main channel circuit and first passage circuit and second channel circuit; and first passage circuit switching is switched to escape truck circuit, the power input line road of outdoor integrated cabinet is powered to visual plant by escape truck circuit and first passage circuit.
Based on the power supply input protector of the outdoor integrated cabinet that the above embodiment of the present invention provides, power consumption equipment in outdoor integrated cabinet is divided into visual plant and insignificant equipment, communication equipment is wherein visual plant, under normal circumstances, that is: when there is not electric leakage with thunder and lightning disturbed condition, the power input line road of outdoor integrated cabinet by main channel circuit respectively to visual plant with power as insignificant equipment, detect main channel circuit by the first electric-leakage detection circuit and whether leak electricity; If main channel circuit leaks electricity; the power supply to visual plant and insignificant equipment of main channel circuit is disconnected by switch protecting unit; and visual plant switching is connected to escape truck circuit, the power input line road of outdoor integrated cabinet is powered to visual plant by escape truck circuit.Pass through the embodiment of the present invention; achieve the power protection to power consumption equipment in outdoor integrated cabinet; and maintain in outdoor integrated cabinet to power as the communication equipment of visual plant while protection and do not interrupt, cause the defect of communication equipment power failure when compensate for the action of prior art apparatus for protecting power supply.Avoid outdoor integrated cabinet due to do not configure batteries normal and be interfered and protect and produce tripping operation time the communication service that causes interrupt, and thus to the inconvenience that user brings.Because electric leakage in practical application mostly occurs at the insignificant such as air-conditioning, illumination equipment, the less electric leakage of communication equipment, visual plant separates with insignificant equipment and powers by the present invention, ensures the power supply to communication equipment, and reducing insignificant equipment affects the power supply of visual plant.
Unrestricted according to a concrete example of embodiment of the present invention power supply input protector; in embodiment illustrated in fig. 3; after first passage circuit switching is switched to escape truck circuit; if the second electric-leakage detection circuit detects that escape truck circuit leaks electricity; switch protecting unit 301 also for cutting off the connection between first passage circuit and escape truck circuit, to stop the power supply to visual plant.
Exemplarily, after first passage circuit switching is switched to escape truck circuit, if the second electric-leakage detection circuit 303 does not detect that escape truck circuit leaks electricity, by escape truck circuit and first passage circuit, visual plant is powered in the first preset duration, and after the first preset duration terminates, switch protecting unit 301 disconnects the connection of escape truck circuit and first passage circuit, and first passage circuit switching is returned main channel circuit, the power input line road of outdoor integrated cabinet is powered to visual plant by main channel circuit and first passage circuit.
Further exemplarily; after first passage circuit switching is returned main channel circuit; if the first electric-leakage detection circuit 302 does not detect that main channel circuit leaks electricity; switch protecting unit 301 also for connecting main channel circuit and second channel circuit, to be powered to insignificant equipment by main channel circuit and second channel circuit.
In addition; after first passage circuit switching is returned main channel circuit; if the first electric-leakage detection circuit 302 detects that main channel circuit leaks electricity; switch protecting unit 301 is also for disconnecting the connection of main channel circuit and first passage circuit; again first passage circuit switching is switched to escape truck circuit, to be powered to visual plant by escape truck circuit and first passage circuit.
Unrestricted according to another concrete example of embodiment of the present invention power supply input protector, then see Fig. 3, also comprise lightning protection device 304, be in off-state for the operating state when lightening strikes.Accordingly, switch protecting unit 301 is also for gathering the work state information of lightning protection device 304, and after the connection disconnecting main channel circuit and first passage circuit and second channel circuit, whether the operating state according to the work state information identification lightning protection device 304 of the lightning protection device 304 collected is in closure state; If the operating state of collection lightning protection device 304 is in closure state, switch protecting unit 301 starts to perform operation first passage circuit switching being switched to escape truck circuit; Otherwise if the operating state of collection lightning protection device 304 is in off-state, switch protecting unit 301 does not perform operation first passage circuit switching being switched to escape truck circuit.
Unrestricted according to another concrete example of embodiment of the present invention power supply input protector; again see Fig. 3; also comprise the alarm output unit 305 be connected with switch protecting unit 301; during for detecting that at the first electric-leakage detection circuit 302 electric leakage occurs main channel circuit; or when the second electric-leakage detection circuit 303 detects that electric leakage occurs escape truck circuit, carry out electric leakage alarming prompting.
Fig. 4 is the structural representation of another embodiment of power supply input protector of outdoor integrated cabinet of the present invention.As shown in Figure 4, compared with the embodiment shown in Fig. 3, the first electric-leakage detection circuit 302 comprises voltage transformer, current transformer, the first leakage current transformer and multiple first analog signal amplifier.Second electric-leakage detection circuit 303 comprises the second leakage current transformer and the second analog signal amplifier.
Wherein, voltage transformer is used in main channel circuit sampling voltage; Current transformer is used at main channel circuit sampling current; First leakage current transformer for detecting leakage current on the circuit of main channel; Multiple first analog signal amplifier, faint sampling voltage, sampling current and the leakage current be respectively used to according to presetting voltage transformer, current transformer, the first leakage current transformer obtain amplifies rear input switch protecting unit 301.Accordingly, whether switch protecting unit 301 specifically leaks electricity according to sampling voltage, sampling current and leakage current identification main channel circuit after amplification.
Second leakage current transformer for detecting leakage current on escape truck circuit; Second analog signal amplifier is used for amplifying rear input switch protecting unit 301 according to the leakage current preset the second leakage current transformer detects.Accordingly, whether switch protecting unit 301 specifically leaks electricity according to the leakage current identification escape truck circuit after amplification.
As shown in Figure 4; in actual applications; switch protecting unit 301 in various embodiments of the present invention specifically can pass through a microcontroller (MicroControlUnit; hereinafter referred to as: MCU) realize; such as; adopt the PIC18F4520 chip that MICROCHIP company produces; MCU inside can integrated existing various chip functions unit; such as; based on the application protocol (CANCalibrationProtocol of CAN; hereinafter referred to as: CCP) unit, serial communication, house dog etc., for Realization of Product function and long-term stable operation provide basis.Exemplarily, MCU can control the connecting and disconnecting of first passage circuit, second channel circuit and main channel circuit by an output control unit, and the connecting and disconnecting of first passage circuit and escape truck circuit.
Wherein, first passage circuit can adopt common relay to export to visual plant, second channel circuit can adopt big current magnetic latching relay to export to insignificant equipment, to meet the need for electricity of insignificant equipment high voltage, high electric current, disconnect insignificant device power supply (DPS) running in the situation such as thunderstorm, leak current fault, ensure the power supply of visual plant.
Again see Fig. 4, alarm output unit 305 specifically can by light-emitting diode (light-emittingdiode, hereinafter referred to as: LED) display unit carries out outputting alarm.In addition, in power supply input protector, can also lightning protection unit be set, for carrying out lightning protection to power supply input protector self.
Exemplarily; in power supply input protector, 220V/24V transformer can also be set; for the direct current being 24V by the convert alternating current of 220V in the power input line road of outdoor integrated cabinet, MCU is powered, also can directly be powered to MCU by the DC power supply of 48V.If MCU has accessed the alternating current of 220V and the DC power supply of 48V simultaneously, then a power supply preference circuit unit can being set, preferentially having selected the alternating current of 220V or the DC power supply of 48V to power to MCU according to pre-setting.
In addition, can also be powered to unit each in power supply input protector by battery, and a cell voltage unit is set to sample the voltage parameter of this battery and to input MCU to monitor.
Exemplarily, in power supply input protector, all right set temperature transducer, samples the temperature signal in outdoor integrated cabinet and is supplied to MCU and carry out monitoring temperature.
Exemplarily; in power supply input protector, can also electric energy meter be set; such as can adopt the individual event electric energy computation chip BL6523A of Shanghai Belling; the analog modules such as integrated 3 road high-precision adcs (Sigma-DeltaADC), reference voltage, power management; and process the numerical signal treatment circuit of the electrical quantitys such as active power, apparent power, current/voltage effective value; there is the feature of high-precision and high-stability; communicate with high-speed synchronous serial port (SPI) can be adopted between MCU, carry out the transmission of measuring parameter and calibration parameter.
Exemplarily, in power supply input protector, switching value processing unit can also be set, for being supplied to MCU monitoring the environment in outdoor integrated cabinet the on off state of the various alarms such as the smoke alarm gathered in outdoor integrated cabinet.
Exemplarily, in power supply input protector, can also communication unit be set, such as RS485 communication unit, various signals for being obtained by MCU are sent to Surveillance center by intelligent interface through transmission channel, concrete communication can be RS485, the standard communication protocols such as network communication protocol (modbus), can Long-distance Control switch that power consumption equipment is powered and optimum configurations, can by the parameter current of power supply input protector as voltage, electric current, leakage current, active power, apparent power, power factor, the parameters such as power consumption are uploaded to Surveillance center by communication network, so that attendant processes fault in time according to the information uploaded.
In this specification, each embodiment all adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiment, same or analogous part cross-reference between each embodiment.For device embodiment, because itself and embodiment of the method are substantially corresponding, so description is fairly simple, relevant part illustrates see the part of embodiment of the method.
One of ordinary skill in the art will appreciate that: all or part of step realizing said method embodiment can have been come by the hardware that program command is relevant, aforesaid program can be stored in a computer read/write memory medium, this program, when performing, performs the step comprising said method embodiment; And aforesaid storage medium comprises: ROM, RAM, magnetic disc or CD etc. various can be program code stored medium.
The embodiment of the present invention, relative to existing earth leakage protective device and reclosing equipment, has the following advantages:
Under electric leakage or disturbed condition, visual plant is powered and is not interrupted;
Send the prompting of leakage-current alarm information when outdoor integrated cabinet exists drain conditions, field maintenance person's rack can be pointed out to there is drain conditions, also electric leakage information can be sent to Surveillance center;
Have such as, to electric energy and analog quantity and switching value, the monitoring function of cell voltage, temperature sensor, on-off model.
The embodiment of the present invention, after outdoor integrated cabinet uses, greatly reduces outdoor integrated cabinet and leaks by thunder and lightning interference the number of times that protection device tripping operation causes communication equipment interruption of work.
Description of the invention provides in order to example with for the purpose of describing, and is not exhaustively or limit the invention to disclosed form.Many modifications and variations are obvious for the ordinary skill in the art.Selecting and describing embodiment is in order to principle of the present invention and practical application are better described, and enables those of ordinary skill in the art understand the present invention thus design the various embodiments with various amendment being suitable for special-purpose.
Claims (13)
1. the power supply input protection method of an outdoor integrated cabinet, it is characterized in that, be provided with the miscellaneous equipment beyond the communication equipment as visual plant and the described communication equipment as insignificant equipment in described outdoor integrated cabinet, the power input line road of described outdoor integrated cabinet is powered to visual plant and insignificant equipment respectively by main channel circuit; Described method comprises:
Detect main channel circuit by the first electric-leakage detection circuit whether to leak electricity;
If main channel circuit leaks electricity; the power supply to visual plant and insignificant equipment of main channel circuit is disconnected by switch protecting unit; and visual plant switching is connected to escape truck circuit, the power input line road of described outdoor integrated cabinet is powered to visual plant by described escape truck circuit.
2. method according to claim 1, is characterized in that, is switched by visual plant after being connected to escape truck circuit, also comprises:
By the second electric-leakage detection circuit, detect escape truck circuit and whether leak electricity;
If escape truck circuit leaks electricity, disconnect the connection between escape truck circuit and visual plant by described switch protecting unit, stop the power input line road of described outdoor integrated cabinet by the power supply of escape truck circuit to visual plant.
3. method according to claim 2, is characterized in that, also comprises:
If escape truck circuit leaks electricity, identify whether the power supply duration of described escape truck circuit to visual plant reaches the first preset duration;
When the power supply duration of described escape truck circuit to visual plant reaches described first preset duration, by switch protecting unit, visual plant is switched back main channel circuit, the power input line road of described outdoor integrated cabinet is powered to visual plant by described main channel circuit, and whether is leaked electricity by the first electric-leakage detection circuit detection main channel circuit;
If main channel circuit leaks electricity, perform described switching by visual plant and be connected to escape truck circuit, make the operation that the power input line road of described outdoor integrated cabinet is powered to visual plant by described escape truck circuit;
If main channel circuit leaks electricity, connect described main channel circuit and insignificant equipment by switch protecting unit, recover main channel circuit to the power supply of insignificant equipment.
4. the method according to claims 1 to 3 any one, is characterized in that, also comprise the operation of the work state information being gathered lightning protection device by switch protecting unit, described lightning protection device operating state when lightening strikes is in off-state;
Disconnect main channel circuit to after the power supply of visual plant and insignificant equipment by switch protecting unit, also comprise:
Whether the operating state according to the work state information identification lightning protection device of lightning protection device is in closure state;
If the operating state of lightning protection device is in closure state, perform described operation visual plant switching being connected to escape truck circuit.
5. method according to claim 4, is characterized in that, also comprises:
When detecting that electric leakage occurs main channel circuit or when electric leakage occurs escape truck circuit, carry out electric leakage alarming prompting.
6. the power supply input protector of an outdoor integrated cabinet, it is characterized in that, the miscellaneous equipment beyond the communication equipment as visual plant and the described communication equipment as insignificant equipment is provided with in described outdoor integrated cabinet, described power supply input protector comprises switch protecting unit, described switch protecting unit is accessed by escape truck circuit and main channel circuit in the power input line road of described outdoor integrated cabinet, described switch protecting unit is connected with visual plant, by second channel circuit and insignificant equipment connection by first passage circuit;
Described main channel circuit is provided with the first electric-leakage detection circuit for carrying out detection of electrical leakage to main channel circuit;
Described escape truck circuit is provided with the second electric-leakage detection circuit for carrying out detection of electrical leakage to emergent port line;
When first electric-leakage detection circuit does not detect that electric leakage occurs main channel circuit, described switch protecting unit connects described main channel circuit and first passage circuit and described main channel circuit and second channel circuit, and the power input line road of described outdoor integrated cabinet is powered to visual plant and insignificant equipment respectively by described main channel circuit, first passage circuit and second channel circuit; When first electric-leakage detection circuit detects that electric leakage occurs main channel circuit; described switch protecting unit disconnects the connection of described main channel circuit and first passage circuit and second channel circuit; and first passage circuit switching is switched to escape truck circuit, the power input line road of described outdoor integrated cabinet is powered to visual plant by described escape truck circuit and first passage circuit.
7. device according to claim 6; it is characterized in that; after first passage circuit switching is switched to escape truck circuit; if the second electric-leakage detection circuit detects that escape truck circuit leaks electricity; described switch protecting unit also for cutting off the connection between first passage circuit and escape truck circuit, to stop the power supply to visual plant.
8. device according to claim 7, it is characterized in that, after first passage circuit switching is switched to escape truck circuit, if the second electric-leakage detection circuit does not detect that escape truck circuit leaks electricity, by described escape truck circuit and first passage circuit, visual plant is powered in the first preset duration, and after the first preset duration terminates, described switch protecting unit disconnects the connection of described escape truck circuit and first passage circuit, and first passage circuit switching is returned main channel circuit, the power input line road of described outdoor integrated cabinet is powered to visual plant by described main channel circuit and first passage circuit.
9. device according to claim 8; it is characterized in that; after first passage circuit switching is returned main channel circuit; if the first electric-leakage detection circuit does not detect that main channel circuit leaks electricity; described switch protecting unit also for connecting described main channel circuit and second channel circuit, to be powered to insignificant equipment by described main channel circuit and second channel circuit.
10. device according to claim 8; it is characterized in that; after first passage circuit switching is returned main channel circuit; if the first electric-leakage detection circuit detects that main channel circuit leaks electricity; described switch protecting unit disconnects the connection of described main channel circuit and first passage circuit; again first passage circuit switching is switched to escape truck circuit, to be powered to visual plant by described escape truck circuit and first passage circuit.
11. devices according to claim 6 to 10 any one, it is characterized in that, also comprise lightning protection device, when lightening strikes, operating state is in off-state;
Described switch protecting unit is also for gathering the work state information of lightning protection device, and after the connection disconnecting described main channel circuit and first passage circuit and second channel circuit, whether the operating state according to the work state information identification lightning protection device of the lightning protection device collected is in closure state; If the operating state of lightning protection device is in closure state, described switch protecting unit performs operation first passage circuit switching being switched to escape truck circuit; Otherwise if the operating state of lightning protection device is in off-state, described switch protecting unit does not perform operation first passage circuit switching being switched to escape truck circuit.
12. devices according to claim 11; it is characterized in that; also comprise the alarm output unit be connected with described switch protecting unit; during for detecting that at the first electric-leakage detection circuit electric leakage occurs main channel circuit; or when the second electric-leakage detection circuit detects that electric leakage occurs escape truck circuit, carry out electric leakage alarming prompting.
13. devices according to claim 12, is characterized in that, described first electric-leakage detection circuit comprises voltage transformer, current transformer, the first leakage current transformer and multiple first analog signal amplifier;
Described voltage transformer is used in main channel circuit sampling voltage; Described current transformer is used at main channel circuit sampling current; First leakage current transformer for detecting leakage current on the circuit of main channel; Multiple first analog signal amplifier, sampling voltage, sampling current and the leakage current be respectively used to according to presetting voltage transformer, current transformer, the first leakage current transformer obtain amplifies the described switch protecting unit of rear input; Whether described switch protecting unit specifically leaks electricity according to sampling voltage, sampling current and leakage current identification main channel circuit after amplification;
Described second electric-leakage detection circuit comprises the second leakage current transformer and the second analog signal amplifier;
Second leakage current transformer for detecting leakage current on escape truck circuit; Second analog signal amplifier is used for amplifying the described switch protecting unit of rear input according to the leakage current preset the second leakage current transformer detects; Whether described switch protecting unit specifically leaks electricity according to the leakage current identification escape truck circuit after amplification.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210023024.XA CN103248003B (en) | 2012-02-02 | 2012-02-02 | The power supply input protector of outdoor integrated cabinet and method |
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| CN201210023024.XA CN103248003B (en) | 2012-02-02 | 2012-02-02 | The power supply input protector of outdoor integrated cabinet and method |
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| CN103248003B true CN103248003B (en) | 2016-03-30 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105911344A (en) * | 2016-04-26 | 2016-08-31 | 宁波三星智能电气有限公司 | Intelligent electric energy meter supporting electric leakage protection |
| CN106989518A (en) * | 2017-05-27 | 2017-07-28 | 广东海信家电有限公司 | A kind of household electrical appliance |
| CN107947126A (en) * | 2017-11-20 | 2018-04-20 | 安徽晓星能源科技有限公司 | One kind is applied to electrical cabinet detection of electrical leakage and protection system |
| CN108732968A (en) * | 2018-05-21 | 2018-11-02 | 珠海格力电器股份有限公司 | Fault repairing device and control method and device thereof, storage medium and electric appliance |
| CN111988893A (en) * | 2020-08-18 | 2020-11-24 | 上海市城市建设设计研究总院（集团）有限公司 | Intelligent lighting control system suitable for it is all-round |
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| US5747887A (en) * | 1991-04-25 | 1998-05-05 | Kundenko Co., Ltd. | Multi-function electric power conversion system |
| CN1199262A (en) * | 1997-03-19 | 1998-11-18 | 日本电气株式会社 | Transmission line protection system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US8539274B2 (en) * | 2010-03-17 | 2013-09-17 | International Business Machines Corporation | Load shedding during emergency power off event |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US5747887A (en) * | 1991-04-25 | 1998-05-05 | Kundenko Co., Ltd. | Multi-function electric power conversion system |
| CN1199262A (en) * | 1997-03-19 | 1998-11-18 | 日本电气株式会社 | Transmission line protection system |
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