CN103248003A - Power input protection device and power input protection method for outdoor comprehensive cabinet - Google Patents
Power input protection device and power input protection method for outdoor comprehensive cabinet Download PDFInfo
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- CN103248003A CN103248003A CN201210023024XA CN201210023024A CN103248003A CN 103248003 A CN103248003 A CN 103248003A CN 201210023024X A CN201210023024X A CN 201210023024XA CN 201210023024 A CN201210023024 A CN 201210023024A CN 103248003 A CN103248003 A CN 103248003A
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Abstract
The embodiment of the invention discloses a power input protection device and a power input protection method for an outdoor comprehensive cabinet. The outdoor comprehensive cabinet is internally provided with communication equipment serving as important equipment, and other equipment serving as unimportant equipment, except the communication equipment, and a power input circuit of the outdoor comprehensive cabinet supplies power for the important equipment and the unimportant equipment through a main channel circuit. The method comprises the steps that whether the main channel circuit generates leakage is detected by a first leakage detection circuit; if the main channel circuit generates the leakage, power supply of the main channel circuit for the important equipment and the unimportant equipment is disconnected by a switching protection unit; the important equipment is switched and connected to an emergency channel circuit; and the power input circuit of the outdoor comprehensive cabinet supplies the power for the important equipment through the emergency channel circuit. The device and the method can avoid communication service interruption due to the fact that a storage battery pack is not configured, and the outdoor comprehensive cabinet is protected to trip under normal and interferential conditions.
Description
Technical field
The present invention relates to the communication technology, especially a kind of power supply input protection apparatus and method of outdoor comprehensive rack.
Background technology
Along with the propelling of telecommunication department " light advances copper and moves back " work, the communication equipment that was installed in originally in the communications equipment room more and more is installed in the outdoor comprehensive rack.Because the residing particular surroundings of outdoor comprehensive rack, in order to protect the person and device security, require at civil power point of incoming cables installation earth leakage protective device during comprehensive rack the design office outside.But existing earth leakage protective device is implemented the effectively protection except electric leakage takes place at power consumption equipment; also usually because be interfered and misoperation; particularly at the thunderstorm season in summer; earth leakage protective device is subjected to thunder and lightning to disturb the frequent protection trip condition that occurs, and will influence the power supply of power consumption equipment in the outdoor comprehensive rack after the earth leakage protective device tripping operation.
Afterwards, need manually to send the problem of electricity to on-the-spot resetting after solving the earth leakage protective device tripping operation, prior art has proposed auto recloser.But auto recloser of short duration power failure can occur in the protection tripping operation, and automatic closing send electricity again then, has saved manually and has sent the operation of electricity to on-the-spot resetting.
In realizing process of the present invention, the inventor finds that there is following problem at least in prior art:
Be that earth leakage protective device or auto recloser alternating current when protection all can have a power failure; often do not dispose batteries in the present outdoor comprehensive rack; for the comprehensive rack that does not dispose batteries; power failure will cause the communication equipment in the comprehensive rack can't obtain power supply; thereby make that communication equipment can't operate as normal; cause communication service to be interrupted; communication service interrupts having influenced the normal use of user to communication service frequently; reflect bigger; complain morely, bring very big pressure for service and maintenance department.
Summary of the invention
Embodiment of the invention technical problem to be solved is: a kind of power supply input protection apparatus and method of outdoor comprehensive rack are provided, produce the communication service interruption that when tripping cause normal with being interfered to protect owing to not disposing batteries to avoid outdoor comprehensive rack.
The power supply input protection method of a kind of outdoor comprehensive rack that the embodiment of the invention provides, be provided with in the described outdoor comprehensive rack as the communication equipment of visual plant with as the miscellaneous equipment beyond the described communication equipment of non-visual plant, the power input line road of described outdoor comprehensive rack by the main channel circuit respectively to visual plant with power as non-visual plant; Described method comprises:
Whether detect the main channel circuit by first electric-leakage detection circuit leaks electricity;
If the main channel circuit leaks electricity; disconnect the main channel circuit to the power supply of visual plant and non-visual plant by the switch protecting unit; and visual plant switched be connected to the escape truck circuit, the power input line road of described outdoor comprehensive rack is powered to visual plant by described escape truck circuit.
The power supply input protection device of a kind of outdoor comprehensive rack that the embodiment of the invention provides, be provided with in the described outdoor comprehensive rack as the communication equipment of visual plant and as the miscellaneous equipment beyond the described communication equipment of non-visual plant, described power supply input protection device comprises the switch protecting unit, described switch protecting unit is inserted by escape truck circuit and main channel circuit in the power input line road of described outdoor comprehensive rack, described switch protecting unit is connected with visual plant by the first passage circuit, is connected with non-visual plant by the second channel circuit;
Described main channel circuit is provided with for first electric-leakage detection circuit that the main channel circuit is carried out detection of electrical leakage;
Described escape truck circuit is provided with for second electric-leakage detection circuit that emergent port line is carried out detection of electrical leakage;
When first electric-leakage detection circuit does not detect main channel circuit generation electric leakage, described main channel circuit and first passage circuit and described main channel circuit and second channel circuit are connected in described switch protecting unit, and the power input line road of described outdoor comprehensive rack powers to visual plant and non-visual plant respectively by described main channel circuit, first passage circuit and second channel circuit; When first electric-leakage detection circuit detects main channel circuit generation electric leakage; described switch protecting unit disconnects being connected of described main channel circuit and first passage circuit and second channel circuit; and the first passage circuit switched be switched to the escape truck circuit, the power input line road of described outdoor comprehensive rack powers to visual plant by described escape truck circuit and first passage circuit.
The power supply input protection apparatus and method of the outdoor comprehensive rack that provides based on the above embodiment of the present invention, power consumption equipment in the outdoor comprehensive rack is divided into visual plant and non-visual plant, communication equipment wherein is visual plant, under the normal condition, that is: when not taking place electric leakage with the thunder and lightning disturbed condition, the power input line road of outdoor comprehensive rack by the main channel circuit respectively to visual plant with power as non-visual plant, detect the main channel circuit by first electric-leakage detection circuit and whether leak electricity; If the main channel circuit leaks electricity; disconnect the main channel circuit to the power supply of visual plant and non-visual plant by the switch protecting unit; and visual plant switched be connected to the escape truck circuit, the power input line road of outdoor comprehensive rack is powered to visual plant by the escape truck circuit.Pass through the embodiment of the invention; realized the power protection to power consumption equipment in the outdoor comprehensive rack; and in protection, keep in the outdoor comprehensive rack as the communication equipment power supply of visual plant and do not interrupt, cause the defective of communication equipment power failure when having remedied the action of prior art apparatus for protecting power supply.Compared with prior art, avoided outdoor comprehensive rack to produce the communication service interruption that when tripping cause normal with being interfered to protect owing to not disposing batteries, and the inconvenience that brings to the user thus.Mostly occur at non-visual plants such as air-conditioning, illuminations owing to leak electricity in the practical application, the less electric leakage of communication equipment, the present invention separates power supply with visual plant and non-visual plant, guarantees the power supply to communication equipment, reduces non-visual plant to the power supply influence of visual plant.
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the flow chart of an embodiment of power supply input protection method of the outdoor comprehensive rack of the present invention.
Fig. 2 is the flow chart of another embodiment of power supply input protection method of the outdoor comprehensive rack of the present invention.
Fig. 3 is the structural representation of an embodiment of power supply input protection device of the outdoor comprehensive rack of the present invention.
Fig. 4 is the structural representation of another embodiment of power supply input protection device of the outdoor comprehensive rack of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.
Fig. 1 is the flow chart of an embodiment of power supply input protection method of the outdoor comprehensive rack of the present invention.Wherein, be provided with in the outdoor comprehensive rack as the communication equipment of visual plant and as the miscellaneous equipment beyond the communication equipment of non-visual plant, that is: when not having electric leakage with the thunder and lightning interference, the power input line road of outdoor comprehensive rack powers to visual plant and non-visual plant respectively by the main channel circuit.Wherein, when the thunder and lightning interference occurring, electric-leakage detection circuit detects to leak electricity.As shown in Figure 1, the power supply input protection method of this embodiment comprises:
101, detect the main channel circuit by first electric-leakage detection circuit and whether leak electricity.
102; if the main channel circuit leaks electricity; disconnect the main channel circuit to the power supply of visual plant and non-visual plant by the switch protecting unit; and visual plant switched be connected to the escape truck circuit, the power input line road of outdoor comprehensive rack is powered to visual plant by the escape truck circuit.
The power supply input protection method of the outdoor comprehensive rack that provides based on the above embodiment of the present invention, power consumption equipment in the outdoor comprehensive rack is divided into visual plant and non-visual plant, communication equipment wherein is visual plant, under the normal condition, that is: when not taking place electric leakage with the thunder and lightning disturbed condition, the power input line road of outdoor comprehensive rack by the main channel circuit respectively to visual plant with power as non-visual plant, detect the main channel circuit by first electric-leakage detection circuit and whether leak electricity; If the main channel circuit leaks electricity; disconnect the main channel circuit to the power supply of visual plant and non-visual plant by the switch protecting unit; and visual plant switched be connected to the escape truck circuit, the power input line road of outdoor comprehensive rack is powered to visual plant by the escape truck circuit.Pass through the embodiment of the invention; realized the power protection to power consumption equipment in the outdoor comprehensive rack; and in protection, keep in the outdoor comprehensive rack as the communication equipment power supply of visual plant and do not interrupt, cause the defective of communication equipment power failure when having remedied the action of prior art apparatus for protecting power supply.Avoided outdoor comprehensive rack to produce the communication service interruption that when tripping cause normal with being interfered to protect owing to not disposing batteries, and the inconvenience that brings to the user thus.Mostly occur at non-visual plants such as air-conditioning, illuminations owing to leak electricity in the practical application, the less electric leakage of communication equipment, the present invention separates power supply with visual plant and non-visual plant, guarantees the power supply to communication equipment, reduces non-visual plant to the power supply influence of visual plant.
Fig. 2 is the flow chart of another embodiment of power supply input protection method of the outdoor comprehensive rack of the present invention.Wherein, be provided with in the outdoor comprehensive rack as the communication equipment of visual plant and as the miscellaneous equipment beyond the communication equipment of non-visual plant, under the normal condition, that is: when not having electric leakage with the thunder and lightning interference, the power input line road of outdoor comprehensive rack powers to visual plant and non-visual plant respectively by the main channel circuit.Wherein, when the thunder and lightning interference occurring, electric-leakage detection circuit detects to leak electricity.As shown in Figure 2, the power supply input protection method of this embodiment comprises:
201, detect the main channel circuit by first electric-leakage detection circuit and whether leak electricity, and the work state information of gathering lightning protection device by the switch protecting unit.
Exemplarily; in 201 the operation; can be according to preestablishing; whether leak electricity by first electric-leakage detection circuit detection main channel circuit in real time or regularly; also can be in real time or regularly gather the work state information of lightning protection device by the switch protecting unit, between these two operations and and other operation between life period ordinal relation not.
202, according to the testing result of first electric-leakage detection circuit, whether identification main channel circuit leaks electricity.If the main channel circuit leaks electricity, carry out 203 operation.Otherwise, if the main channel circuit leaks electricity, do not carry out the follow-up flow process of present embodiment, the power input line road of the outer comprehensive rack of holding chamber by the main channel circuit respectively to visual plant with power as non-visual plant.
203, disconnect the main channel circuit to the power supply of visual plant and non-visual plant by the switch protecting unit, and whether be in closure state according to the operating state that the work state information of lightning protection device is identified lightning protection device.If the operating state of collection lightning protection device is in closure state, illustrate that strong thunder and lightning does not take place to be attacked, and carries out 204 operation.Otherwise, if the operating state of lightning protection device is in off-state, do not carry out the follow-up flow process of present embodiment.
Gather the work state information of lightning protection device simultaneously; when under 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; the switch protecting unit does not switch to the operation of escape truck circuit fast to visual plant; the main channel circuit is stopped power supply with the escape truck circuit, the preferential security of operation that guarantees communication equipment under strong thunder and lightning situation.
204, by the switch protecting unit visual plant switching is connected to the escape truck circuit, the power input line road of outdoor comprehensive rack is powered to visual plant by the escape truck circuit.
205, by second electric-leakage detection circuit, detect the escape truck circuit and whether leak electricity.If the escape truck circuit leaks electricity, carry out 206 operation.Otherwise, if the escape truck circuit leaks electricity, carry out 207 operation.
206, disconnect being connected between escape truck circuit and the visual plant by the switch protecting unit, stop the power input line road of outdoor comprehensive rack by the power supply of escape truck circuit to visual plant.Afterwards, do not carry out the follow-up flow process of present embodiment.
207, whether identification escape truck circuit reaches the first default duration to the power supply duration of visual plant, for example, can be set to 1 to 8 hour, and can adjust according to the actual requirements.If the escape truck circuit does not reach the first default duration to the power supply duration of visual plant, keep the power input line road of outdoor comprehensive rack is powered to visual plant by the escape truck circuit.When the escape truck circuit reaches the first default duration to the power supply duration of visual plant, carry out 208 operation.
208, by the switch protecting unit visual plant is switched back the main channel circuit, the power input line road of outdoor comprehensive rack is powered to visual plant by the main channel circuit, and whether leak electricity by first electric-leakage detection circuit detection main channel circuit.If the main channel circuit leaks electricity, carry out 204 operation.Otherwise, if the main channel circuit leaks electricity, carry out 209 operation.
209, connect main channel circuit and non-visual plant by the switch protecting unit, recover the main channel circuit to the power supply of non-visual plant.
According to example of the embodiment of the invention and unrestricted; in the power supply input protection method of the outdoor comprehensive rack of the various embodiments described above of the present invention; can also be when detecting the main channel circuit electric leakage take place or escape truck circuit when electric leakage takes place; carry out the electric leakage alarming prompting; point out outdoor comprehensive rack to exist electric leakage dangerous; specifically can carry out on-the-spot electric leakage alarming prompting; also can report this electric leakage alarming prompting to Surveillance center; perhaps; also can when carrying out the prompting of on-the-spot electric leakage alarming, report this electric leakage alarming prompting to Surveillance center simultaneously.
In addition; according to another example of the embodiment of the invention and unrestricted; when main channel circuit and escape truck circuit all leak electricity; can behind the second default duration, recover the main channel circuit to the power supply of visual plant and non-visual plant, and carry out the power supply input protection method flow of the outdoor comprehensive rack of the various embodiments described above of the present invention.The second default duration is wherein preset longer that duration can arrange with respect to first, for example, and 24 hours etc.
Fig. 3 is the structural representation of an embodiment of power supply input protection device of the outdoor comprehensive rack of the present invention.The power supply input protection device of this embodiment can be used for realizing the flow process of above-mentioned each the power supply input protection method embodiment of the present invention.Wherein, be provided with in the outdoor comprehensive rack as the communication equipment of visual plant with as miscellaneous equipment non-visual plant, beyond the communication equipment.Non-visual plant wherein is air-conditioning, lighting apparatus etc. for example.As shown in Figure 3; the power supply input protection device of this embodiment comprises switch protecting unit 301; switch protecting unit 301 is inserted by escape truck circuit and main channel circuit in the power input line road of outdoor comprehensive rack; switch protecting unit 301 is connected with visual plant by the first passage circuit, is connected with non-visual plant by the second channel circuit.
Wherein, the main channel circuit is provided with for first electric-leakage detection circuit 302 that the main channel circuit is carried out detection of electrical leakage.The escape truck circuit is provided with for second electric-leakage detection circuit 303 that emergent port line is carried out detection of electrical leakage.
When first electric-leakage detection circuit 302 does not detect main channel circuit generation electric leakage; main channel circuit and first passage circuit and main channel circuit and second channel circuit are connected in switch protecting unit 301, and the power input line road of outdoor comprehensive rack is powered to visual plant and non-visual plant respectively by main channel circuit, first passage circuit and second channel circuit.When first electric-leakage detection circuit 302 detects main channel circuit generation electric leakage; switch protecting unit 301 disconnection main channel circuits are connected with first passage circuit and second channel circuit; and the first passage circuit switched be switched to the escape truck circuit, the power input line road of outdoor comprehensive rack is powered to visual plant by escape truck circuit and first passage circuit.
The power supply input protection device of the outdoor comprehensive rack that provides based on the above embodiment of the present invention, power consumption equipment in the outdoor comprehensive rack is divided into visual plant and non-visual plant, communication equipment wherein is visual plant, under the normal condition, that is: when not taking place electric leakage with the thunder and lightning disturbed condition, the power input line road of outdoor comprehensive rack by the main channel circuit respectively to visual plant with power as non-visual plant, detect the main channel circuit by first electric-leakage detection circuit and whether leak electricity; If the main channel circuit leaks electricity; disconnect the main channel circuit to the power supply of visual plant and non-visual plant by the switch protecting unit; and visual plant switched be connected to the escape truck circuit, the power input line road of outdoor comprehensive rack is powered to visual plant by the escape truck circuit.Pass through the embodiment of the invention; realized the power protection to power consumption equipment in the outdoor comprehensive rack; and in protection, keep in the outdoor comprehensive rack as the communication equipment power supply of visual plant and do not interrupt, cause the defective of communication equipment power failure when having remedied the action of prior art apparatus for protecting power supply.Avoided outdoor comprehensive rack to produce the communication service interruption that when tripping cause normal with being interfered to protect owing to not disposing batteries, and the inconvenience that brings to the user thus.Mostly occur at non-visual plants such as air-conditioning, illuminations owing to leak electricity in the practical application, the less electric leakage of communication equipment, the present invention separates power supply with visual plant and non-visual plant, guarantees the power supply to communication equipment, reduces non-visual plant to the power supply influence of visual plant.
According to concrete example of embodiment of the invention power supply input protection device and unrestricted; in embodiment illustrated in fig. 3; with the first passage circuit switch be switched to the escape truck circuit after; if second electric-leakage detection circuit detects the escape truck circuit and leaks electricity; switch protecting unit 301 also be used for to cut off being connected between first passage circuit and the escape truck circuit, to stop the power supply to visual plant.
Exemplarily; with the first passage circuit switch be switched to the escape truck circuit after; if second electric-leakage detection circuit 303 does not detect the escape truck circuit and leaks electricity; in the first default duration, by escape truck circuit and first passage circuit visual plant is powered; and after the first default duration finishes; switch protecting unit 301 disconnection escape truck circuits are connected with the first passage circuit; and the first passage circuit switched back the main channel circuit, the power input line road of outdoor comprehensive rack is powered to visual plant by main channel circuit and first passage circuit.
Further exemplarily; after the first passage circuit switched back the main channel circuit; if first electric-leakage detection circuit 302 does not detect the main channel circuit and leaks electricity; switch protecting unit 301 also is used for connecting main channel circuit and second channel circuit, in order to by main channel circuit and second channel circuit non-visual plant is powered.
In addition; after the first passage circuit switched back the main channel circuit; if first electric-leakage detection circuit 302 detects the main channel circuit and leaks electricity; switch protecting unit 301 also be used for to disconnect being connected of main channel circuit and first passage circuit; again the switching of first passage circuit is switched to the escape truck circuit, in order to by escape truck circuit and first passage circuit visual plant is powered.
According to another concrete example of embodiment of the invention power supply input protection device and unrestricted, again referring to Fig. 3, also comprise lightning protection device 304, be used for that operating state is in off-state when thunder and lightning attacks.Accordingly, switch protecting unit 301 also is used for gathering the work state information of lightning protection device 304, and after disconnecting being connected of main channel circuit and first passage circuit and second channel circuit, whether the operating state of identifying lightning protection device 304 according to the work state information of the lightning protection device 304 that collects is in closure state; If the operating state of collection lightning protection device 304 is in closure state, switch protecting unit 301 begins to carry out the operation that the switching of first passage circuit is switched to the escape truck circuit; Otherwise if the operating state of collection lightning protection device 304 is in off-state, switch protecting unit 301 is not carried out the first passage circuit is switched the operation that is switched to the escape truck circuit.
According to another concrete example of embodiment of the invention power supply input protection device and unrestricted; again referring to Fig. 3; also comprise the alarm output unit 305 that is connected with switch protecting unit 301; be used for when first electric-leakage detection circuit 302 detects main channel circuit generation electric leakage; perhaps when second electric-leakage detection circuit 303 detects escape truck circuit generation electric leakage, carry out the electric leakage alarming prompting.
Fig. 4 is the structural representation of another embodiment of power supply input protection device of the outdoor comprehensive rack of the present invention.As shown in Figure 4, compare with embodiment shown in Figure 3, first electric-leakage detection circuit 302 comprises voltage transformer, current transformer, first leakage current transformer and a plurality of first analog signal amplifier.Second electric-leakage detection circuit 303 comprises second leakage current transformer and 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 is used for detecting leakage current at the main channel circuit; A plurality of first analog signal amplifiers are respectively applied to amplify input switch protecting unit, back 301 according to preestablishing faint sampling voltage, sampling current and leakage current that voltage transformer, current transformer, first leakage current transformer are obtained.Accordingly, whether switch protecting unit 301 specifically leaks electricity according to the sampling voltage after amplifying, sampling current and leakage current identification main channel circuit.
Second leakage current transformer is used for detecting leakage current at the escape truck circuit; Second analog signal amplifier is used for according to preestablishing the detected leakage current of second leakage current transformer being amplified input switch protecting unit, back 301.Accordingly, whether switch protecting unit 301 specifically leaks electricity according to the leakage current identification escape truck circuit after amplifying.
As shown in Figure 4; in actual applications; switch protecting unit 301 in the various embodiments of the present invention specifically can pass through a microcontroller (Micro Control Unit; hereinafter to be referred as: MCU) realize; for example; the PIC18F4520 chip that adopts MICROCHIP company to produce; MCU inside can integrated existing various chip functions unit; for example; application protocol (CAN Calibration Protocol based on the CAN bus; hereinafter to be referred as: CCP) unit, serial communication, house dog etc., realize function and long-term stable operation for product the basis is provided.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, the first passage circuit can adopt common relay to export to visual plant, the second channel circuit can adopt big electric current magnetic latching relay to export to non-visual plant, to satisfy the need for electricity of non-visual plant high voltage, high electric current, running into the non-visual plant power supply of disconnection under the situations such as thunderstorm, leak current fault, guarantee the power supply of visual plant.
Again referring to Fig. 4, alarm output unit 305 specifically can by a light-emitting diode (light-emitting diode, hereinafter to be referred as: LED) display unit carries out outputting alarm.In addition, in the power supply input protection device lightning protection unit can also be set, be used for power supply input protection device self is carried out lightning protection.
Exemplarily; in the power supply input protection device 220V/24V transformer can also be set; be used for the direct current that alternating current with the power input line road 220V of outdoor comprehensive rack is transformed to 24V MCU is powered, also can directly power to MCU by the DC power supply of 48V.If MCU has inserted the DC power supply of alternating current and the 48V of 220V simultaneously, a power supply preference circuit unit then can be set, according to setting in advance the alternating current of preferentially selecting 220V for use or the DC power supply of 48V MCU is powered.
In addition, can also power to each unit in the power supply input protection device by battery, and arrange a cell voltage unit take a sample this battery voltage parameter and import MCU in order to monitor.
Exemplarily, in the power supply input protection device temperature sensor can also be set, come outside the sampling room temperature signal in the comprehensive rack and offer MCU to carry out monitoring temperature.
Exemplarily; in the power supply input protection device electric energy meter can also be set; for example can adopt the individual event electric energy computation chip BL6523A of Shanghai Belling; analog modules such as integrated 3 road high-precision adcs (Sigma-Delta ADC), reference voltage, power management; and the numerical signal treatment circuit of handling electrical quantitys such as active power, apparent power, current/voltage effective value; characteristics with high-precision and high-stability; communicate by letter with adopting high-speed synchronous serial port (SPI) between the MCU, carry out the transmission of measuring parameter and calibration parameter.
Exemplarily, in the power supply input protection device switching value processing unit can also be set, be used for the on off state of gathering the various alarms such as smoke alarm in the outdoor comprehensive rack and offer MCU the environment in the outdoor comprehensive rack is monitored.
Exemplarily; in the power supply input protection device communication unit can also be set; RS485 communication unit for example; be used for the various signals that MCU obtains are sent to Surveillance center by intelligence interface through transmission channel; concrete communication can be RS485; network communication protocol standard communication protocols such as (modbus); can Long-distance Control to power consumption equipment powered switch and parameter setting; can be with parameter current such as the voltage of power supply input protection device; electric current; leakage current; active power; apparent power; power factor; parameters such as power consumption are uploaded to Surveillance center by communication network, so that the attendant in time handles fault according to the information of uploading.
Each embodiment all adopts the mode of going forward one by one to describe in this specification, and what each embodiment stressed is and the difference of other embodiment that same or analogous part cross-references gets final product between each embodiment.For device embodiment, because it is corresponding substantially with method embodiment, so description is fairly simple, relevant part gets final product referring to the part explanation of method embodiment.
One of ordinary skill in the art will appreciate that: all or part of step that realizes said method embodiment can be finished by the relevant hardware of program command, aforesaid program can be stored in the computer read/write memory medium, this program is carried out the step that comprises said method embodiment when carrying out; And aforesaid storage medium comprises: various media that can be program code stored such as ROM, RAM, magnetic disc or CD.
The embodiment of the invention has the following advantages with respect to existing earth leakage protective device and reclosing equipment:
Under electric leakage or disturbed condition, the visual plant power supply is not interrupted;
When there is the electric leakage situation in outdoor comprehensive rack, send the leakage-current alarm information indicating, can point out on-site maintenance personnel rack to have the electric leakage situation, also electric leakage information can be sent to Surveillance center;
Have electric energy and analog quantity and switching value, for example the monitoring function of cell voltage, temperature sensor, switching value signal.
The embodiment of the invention has significantly reduced outdoor comprehensive rack and has been subjected to thunder and lightning to disturb the tripping operation of leakage protection device to cause the number of times of communication equipment interruption of work after outdoor comprehensive rack uses.
Description of the invention provides for 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 for better explanation principle of the present invention and practical application, thereby and makes those of ordinary skill in the art can understand the various embodiment that have various modifications that the present invention's design is suitable for special-purpose.
Claims (13)
1. the power supply input protection method of an outdoor comprehensive rack, it is characterized in that, be provided with in the described outdoor comprehensive rack as the communication equipment of visual plant with as the miscellaneous equipment beyond the described communication equipment of non-visual plant, the power input line road of described outdoor comprehensive rack by the main channel circuit respectively to visual plant with power as non-visual plant; Described method comprises:
Whether detect the main channel circuit by first electric-leakage detection circuit leaks electricity;
If the main channel circuit leaks electricity; disconnect the main channel circuit to the power supply of visual plant and non-visual plant by the switch protecting unit; and visual plant switched be connected to the escape truck circuit, the power input line road of described outdoor comprehensive rack is powered to visual plant by described escape truck circuit.
2. method according to claim 1 is characterized in that, visual plant is switched be connected to after the escape truck circuit, also comprises:
By second electric-leakage detection circuit, detect the escape truck circuit and whether leak electricity;
If the escape truck circuit leaks electricity, disconnect being connected between escape truck circuit and the visual plant by described switch protecting unit, the escape truck circuit is passed through to the power supply of visual plant in the power input line road that stops described outdoor comprehensive rack.
3. method according to claim 2 is characterized in that, also comprises:
If the escape truck circuit leaks electricity, identify described escape truck circuit whether the power supply duration of visual plant is reached the first default duration;
When described escape truck circuit reaches the described first default duration to the power supply duration of visual plant, by the switch protecting unit visual plant is switched back the main channel circuit, the power input line road of described outdoor comprehensive rack is powered to visual plant by described main channel circuit, and whether leak electricity by first electric-leakage detection circuit detection main channel circuit;
If the main channel circuit leaks electricity, carry out described the visual plant switching is connected to the escape truck circuit, the operation that the power input line road of described outdoor comprehensive rack is powered to visual plant by described escape truck circuit;
If the main channel circuit leaks electricity, connect described main channel circuit and non-visual plant by the switch protecting unit, recover the main channel circuit to the power supply of non-visual plant.
4. according to any described method of claim 1 to 3, it is characterized in that, also comprise the operation of gathering the work state information of lightning protection device by the switch protecting unit;
After the power supply of switch protecting unit disconnection main channel circuit to visual plant and non-visual plant, also comprise:
Whether the operating state of identifying lightning protection device according to the work state information of lightning protection device is in closure state;
If the operating state of collection lightning protection device is in closure state, carry out the described operation that is connected to the escape truck circuit that visual plant is switched.
5. method according to claim 4 is characterized in that, also comprises:
When detecting the main channel circuit electric leakage takes place or escape truck circuit when electric leakage takes place, carry out the electric leakage alarming prompting.
6. the power supply input protection device of an outdoor comprehensive rack, it is characterized in that, be provided with in the described outdoor comprehensive rack as the communication equipment of visual plant and as the miscellaneous equipment beyond the described communication equipment of non-visual plant, described power supply input protection device comprises the switch protecting unit, described switch protecting unit is inserted by escape truck circuit and main channel circuit in the power input line road of described outdoor comprehensive rack, described switch protecting unit is connected with visual plant by the first passage circuit, is connected with non-visual plant by the second channel circuit;
Described main channel circuit is provided with for first electric-leakage detection circuit that the main channel circuit is carried out detection of electrical leakage;
Described escape truck circuit is provided with for second electric-leakage detection circuit that emergent port line is carried out detection of electrical leakage;
When first electric-leakage detection circuit does not detect main channel circuit generation electric leakage, described main channel circuit and first passage circuit and described main channel circuit and second channel circuit are connected in described switch protecting unit, and the power input line road of described outdoor comprehensive rack powers to visual plant and non-visual plant respectively by described main channel circuit, first passage circuit and second channel circuit; When first electric-leakage detection circuit detects main channel circuit generation electric leakage; described switch protecting unit disconnects being connected of described main channel circuit and first passage circuit and second channel circuit; and the first passage circuit switched be switched to the escape truck circuit, the power input line road of described outdoor comprehensive rack powers to visual plant by described escape truck circuit and first passage circuit.
7. device according to claim 6; it is characterized in that; with the first passage circuit switch be switched to the escape truck circuit after; if second electric-leakage detection circuit detects the escape truck circuit and leaks electricity; described switch protecting unit also be used for to cut off being connected between first passage circuit and the escape truck circuit, to stop the power supply to visual plant.
8. device according to claim 7; it is characterized in that; with the first passage circuit switch be switched to the escape truck circuit after; if second electric-leakage detection circuit does not detect the escape truck circuit and leaks electricity; in the first default duration, by described escape truck circuit and first passage circuit visual plant is powered; and after the first default duration finishes; described switch protecting unit disconnects being connected of described escape truck circuit and first passage circuit; and the first passage circuit switched back the main channel circuit, the power input line road of described outdoor comprehensive rack powers to visual plant by described main channel circuit and first passage circuit.
9. device according to claim 8; it is characterized in that; after the first passage circuit switched back the main channel circuit; if first electric-leakage detection circuit does not detect the main channel circuit and leaks electricity; described switch protecting unit also is used for connecting described main channel circuit and second channel circuit, in order to by described main channel circuit and second channel circuit non-visual plant is powered.
10. device according to claim 8; it is characterized in that; after the first passage circuit switched back the main channel circuit; if first electric-leakage detection circuit detects the main channel circuit and leaks electricity; described switch protecting unit disconnects being connected of described main channel circuit and first passage circuit; again the switching of first passage circuit is switched to the escape truck circuit, in order to by described escape truck circuit and first passage circuit visual plant is powered.
11. according to any described device of claim 6 to 10, it is characterized in that also comprise lightning protection device, operating state is in off-state when thunder and lightning attacks;
Described switch protecting unit also is used for gathering the work state information of lightning protection device, and after disconnecting being connected of described main channel circuit and first passage circuit and second channel circuit, whether the operating state of identifying lightning protection device according to the work state information of the lightning protection device that collects is in closure state; If the operating state of collection lightning protection device is in closure state, described switch protecting unit is carried out the first passage circuit is switched the operation that is switched to the escape truck circuit; Otherwise if the operating state of collection lightning protection device is in off-state, described switch protecting unit is not carried out the first passage circuit is switched the operation that is switched to the escape truck circuit.
12. device according to claim 11; it is characterized in that; also comprise the alarm output unit that is connected with described switch protecting unit; be used for when first electric-leakage detection circuit detects main channel circuit generation electric leakage; perhaps when second electric-leakage detection circuit detects escape truck circuit generation electric leakage, carry out the electric leakage alarming prompting.
13. device according to claim 12 is characterized in that, described first electric-leakage detection circuit comprises voltage transformer, current transformer, first leakage current transformer and a plurality of 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 is used for detecting leakage current at the main channel circuit; A plurality of first analog signal amplifiers are respectively applied to amplify the described switch protecting of input unit, back according to preestablishing sampling voltage, sampling current and leakage current that voltage transformer, current transformer, first leakage current transformer are obtained; Whether described switch protecting unit specifically leaks electricity according to the sampling voltage after amplifying, sampling current and leakage current identification main channel circuit;
Described second electric-leakage detection circuit comprises second leakage current transformer and second analog signal amplifier;
Second leakage current transformer is used for detecting leakage current at the escape truck circuit; Second analog signal amplifier is used for according to preestablishing the detected leakage current of second leakage current transformer being amplified the described switch protecting of input unit, back; Whether described switch protecting unit specifically leaks electricity according to the leakage current identification escape truck circuit after amplifying.
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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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| 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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| CN103248003A true CN103248003A (en) | 2013-08-14 |
| CN103248003B CN103248003B (en) | 2016-03-30 |
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| CN201210023024.XA Active CN103248003B (en) | 2012-02-02 | 2012-02-02 | The power supply input protector of outdoor integrated cabinet and method |
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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 | A kind of fault restoration device and its control method, device, 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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Cited By (5)
| 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 | A kind of fault restoration device and its control method, device, 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103248003B (en) | 2016-03-30 |
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