CN102013730A - Underground intelligent intrinsic safety type power supply network - Google Patents
Underground intelligent intrinsic safety type power supply network Download PDFInfo
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- CN102013730A CN102013730A CN 201010577568 CN201010577568A CN102013730A CN 102013730 A CN102013730 A CN 102013730A CN 201010577568 CN201010577568 CN 201010577568 CN 201010577568 A CN201010577568 A CN 201010577568A CN 102013730 A CN102013730 A CN 102013730A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/40—Display of information, e.g. of data or controls
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Abstract
The invention discloses an underground intelligent intrinsic safety type power supply network, belonging to the technical field of a power supply network and aiming to solve the technical problem that the intrinsic safety power supply can be accessed in an underground power supply network without outage and cable disconnection. The technical scheme is as follows: the underground intelligent intrinsic safety type power supply network comprises a constant current source for providing constant DC or AC current and a master closed circuit connecting the input end and output end of the constant current source; a power supply network node and mobile caliper intelligent intrinsic safety type power supplies are hung on the master closed circuit via a caliper structure; and the power supply network node and the intelligent intrinsic safety power supplies communicate via power line carriers. When an intrinsic safety type power supply is installed in the underground intelligent intrinsic safety type power supply network, a junction box is omitted, only a constant current source service cable is needed in the place in which the intrinsic safety type power supply is required to install; and the intrinsic safety type power supply adopts an mutual inductor principle, is combined with a structure similar to a clamp meter cassette, and can be clamped in the service cable of the constant current source only to complete installation.
Description
Technical field
Downhole intelligent intrinsic safety type power net of the present invention belongs to down-hole power network technology field.
Background technology
At present under the coal mine at the intrinsic safety electric source supply power mode of transducer, all be that the AC power with AC127V/660V-50Hz is the direct current intrinsic safety electric source of 5V-24V through power source conversion, power by the direct lead connection of terminal box then.The main weak point of this supply power mode is that inserting at every turn or disconnecting a node all needs the loop to be in off-position, because do not allow the charged connection of uncapping of equipment in explosion-proof environment, so just influences the operate as normal of other equipment in the same loop; In addition, node location changes dumb, increases at every turn or move a node all need disconnect cable in access place, adopt the anti-explosion terminal box wiring, so not only increased breakpoint of cable, node can not move flexibly, and the whole ability that does not possess Remote outage, closure.
Summary of the invention
The present invention overcomes the deficiencies in the prior art, and technical problem to be solved provides a kind of need not the outage also need not disconnect the downhole intelligent intrinsic safety type power net that cable just can insert intrinsic safety electric source safely.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is: downhole intelligent intrinsic safety type power net comprises: the direct current or the AC constant-current source of constant current are provided, connect the main closed loop of constant-current source input and output;
On described main closed loop, be mounted with electric power network node, removable card jaw type intelligence intrinsic safety electric source, communicate by letter by the mode of power line carrier between electric power network node and the intelligent intrinsic safety electric source by pincerlike structure.
Described electric power network node comprises master controller, serial data bus interface, power line carrier interface, power management bus interface, Ethernet interface and touch-screen, and master controller is connected with serial data bus interface, power line carrier interface, power management bus interface, Ethernet interface, touch-screen respectively; The electric power network node carries out the control of remote switch state and output voltage by Ethernet and inner master controller to intelligent intrinsic safety electric source, and output current is done the self adaptation adjustment along with the difference of output voltage according to the intrinsic safety curve;
Described intelligent intrinsic safety electric source is made up of intrinsic safety translation circuit, control circuit and telecommunication circuit, described intrinsic safety translation circuit is made up of the current rectifying and wave filtering circuit, transforming circuit, secondary current rectifying and wave filtering circuit, two-stage voltage stabilizing circuit, two level current limiting circuit and the intrinsic safety output port that connect successively, and telecommunication circuit is made up of power line carrier communication circuit, asynchronous serial communication circuit;
Described control circuit comprises: accessory power supply, the DSP control circuit, base drive circuit, compare amplifying circuit and sample circuit, its structure is: accessory power supply links to each other with the DSP control circuit, be the power supply of DSP control circuit, the input of sample circuit links to each other with the two-stage voltage stabilizing circuit of intrinsic safety translation circuit and the output of two level current limiting circuit respectively, the output of sample circuit links to each other with the input that compares amplifying circuit, relatively the output of amplifying circuit links to each other with the DSP control circuit, the DSP control circuit links to each other with base drive circuit simultaneously, and base drive circuit links to each other with transforming circuit; Also be provided with a plurality of communication interfaces on the DSP control circuit.
The control method of described control circuit is: the output in two-stage voltage stabilizing circuit and the two poles of the earth current-limiting circuit is sampled to electric current and voltage in real time, after the sampling sampled voltage is amplified through comparing amplifying circuit, compare with the reference voltage of setting then, if actual intrinsic safety output valve is less than reference voltage, by the DSP control circuit transforming circuit is adjusted, increase the frequency or the duty ratio of pulse in the transforming circuit, pass through secondary rectifying and wave-filtering and two-stage voltage stabilizing current limliting again, last intrinsic safety output; If actual intrinsic safety output valve is adjusted transforming circuit by the DSP control circuit greater than reference voltage, reduce the frequency or the duty ratio of pulse in the transforming circuit, pass through secondary rectifying and wave-filtering and two-stage voltage stabilizing current limliting again, last intrinsic safety output.
Described electric power network node to the control method of intelligent intrinsic safety electric source is: at first, the electric power network node carries out address and rank registration to each the intelligent intrinsic safety electric source in the network; Then, intelligent intrinsic safety electric source is connected to the application of electric power network node; Then, the electric power network node just decides the connection of intelligent intrinsic safety electric source according to the network load state by rank, and sets output voltage values; Loading in network exceeds standard, and the electric power network node is closed low-level intelligent intrinsic safety electric source successively according to the rank of intelligent intrinsic safety electric source in the network, and is normal until whole network load.
The communication interface that is provided with on the DSP control circuit is serial data bus interface, power line carrier interface and power management bus interface.
Between current rectifying and wave filtering circuit and transforming circuit, be provided with rechargeable battery as stand-by power supply.
The beneficial effect that the present invention is compared with prior art had is:
1, when intrinsic safety electric source is installed, do not need terminal box, only need to install the place of intrinsic safety electric source at needs, there is the constant-current source service cable just passable, the intelligence intrinsic safety electric source adopts the instrument transformer principle, association class is like the structure of pincerlike meter deck, as long as intelligent intrinsic safety electric source is stuck on the service cable of constant-current source just passable.
2, provide the electric power network node, this equipment has man-machine interface preferably, as: intrinsic safety display screen, intrinsic safety keyboard and intrinsic safety mouse, can any one the intelligent intrinsic safety electric source in this power net be configured by this equipment, the particular content of configuration comprises: on off state, output voltage and priority, Ethernet interface is provided simultaneously, and by ICP/IP protocol, the user can long-rangely be configured foregoing.
3, system provides priority feature: the intelligent intrinsic safety electric source that articulates when system more for a long time, when the power that can provide near constant-current source, the intelligent intrinsic safety electric source that priority is lower will be closed automatically, and the alarm indication is provided simultaneously.
Description of drawings
The present invention will be further described below in conjunction with accompanying drawing:
Fig. 1 is a hardware configuration schematic diagram of the present invention;
Fig. 2 is the structural representation of electric power network node among the present invention;
Fig. 3 is the structural representation of intelligent intrinsic safety electric source among the present invention.
Among the figure: 1 is that constant-current source, 2 is that main closed loop, 3 is that electric power network node, 4 is that intelligent intrinsic safety electric source, 5 is that intrinsic safety translation circuit, 6 is that control circuit, 7 is a transforming circuit.
Embodiment
As Fig. 1, Fig. 2, shown in Figure 3, downhole intelligent intrinsic safety type power net of the present invention comprises: the direct current or the AC constant-current source 1 of constant current are provided, connect the main closed loop 2 of constant-current source 1 input and output;
On described main closed loop 2, be mounted with electric power network node 3, removable card jaw type intelligence intrinsic safety electric source 4, communicate by letter by the mode of power line carrier between electric power network node 3 and the intelligent intrinsic safety electric source 4 by pincerlike structure.
Described electric power network node 3 comprises master controller, serial data bus interface, power line carrier interface, power management bus interface, Ethernet interface and touch-screen, and master controller is connected with serial data bus interface, power line carrier interface, power management bus interface, Ethernet interface, touch-screen respectively; Electric power network node 3 carries out the control of remote switch state and output voltage by Ethernet and inner master controller to intelligent intrinsic safety electric source 4, and output current is done the self adaptation adjustment along with the difference of output voltage according to the intrinsic safety curve;
Described intelligent intrinsic safety electric source 4 is made up of intrinsic safety translation circuit 5, control circuit 6 and telecommunication circuit, described intrinsic safety translation circuit 5 is made up of the current rectifying and wave filtering circuit, transforming circuit 7, secondary current rectifying and wave filtering circuit, two-stage voltage stabilizing circuit, two level current limiting circuit and the intrinsic safety output port that connect successively, and telecommunication circuit is made up of power line carrier communication circuit, asynchronous serial communication circuit;
Described control circuit 6 comprises: accessory power supply, DSP control circuit, base drive circuit, comparison amplifying circuit and sample circuit; Its structure is: accessory power supply links to each other with the DSP control circuit, be the power supply of DSP control circuit, the input of sample circuit links to each other with the two-stage voltage stabilizing circuit of intrinsic safety translation circuit 5 and the output of two level current limiting circuit respectively, the output of sample circuit links to each other with the input that compares amplifying circuit, relatively the output of amplifying circuit links to each other with the DSP control circuit, the DSP control circuit links to each other with base drive circuit simultaneously, and base drive circuit links to each other with transforming circuit 7; Also be provided with a plurality of communication interfaces on the DSP control circuit.
The control method of described control circuit 6 is: the output in two-stage voltage stabilizing circuit and the two poles of the earth current-limiting circuit is sampled to electric current and voltage in real time, after the sampling sampled voltage is amplified through comparing amplifying circuit, compare with the reference voltage of setting then, if actual intrinsic safety output valve is less than reference voltage, by the DSP control circuit transforming circuit 7 is adjusted, increase the frequency or the duty ratio of pulse in the transforming circuit 7, pass through secondary rectifying and wave-filtering and two-stage voltage stabilizing current limliting again, last intrinsic safety output; If actual intrinsic safety output valve is adjusted transforming circuit 7 by the DSP control circuit greater than reference voltage, reduce the frequency or the duty ratio of pulse in the transforming circuit 7, pass through secondary rectifying and wave-filtering and two-stage voltage stabilizing current limliting again, last intrinsic safety output.
The control method of 3 pairs of intelligent intrinsic safety electric sources 4 of described electric power network node is: at first, the intelligent intrinsic safety electric source 4 of each in 3 pairs of networks of electric power network node carries out address and rank registration; Then, intelligent intrinsic safety electric source 4 is connected to 3 applications of electric power network node; Then, electric power network node 3 just decides the connection of intelligent intrinsic safety electric source 4 according to the network load state by rank, and sets output voltage values; Loading in network exceeds standard, and electric power network node 3 is closed low-level intelligent intrinsic safety electric source 4 successively according to the rank of intelligent intrinsic safety electric source 4 in the network, and is normal until whole network load.
The communication interface that is provided with on the DSP control circuit is serial data bus interface, power line carrier interface and power management bus interface.
Between current rectifying and wave filtering circuit and transforming circuit 7, be provided with rechargeable battery as stand-by power supply.
The DSP control circuit of intelligent intrinsic safety electric source 4 is realized by dsp chip in the downhole intelligent intrinsic safety type power net of the present invention, the model of dsp chip is TMS320F28020PT, the transforming circuit 7 of intelligence intrinsic safety electric source 4 comprises switch and transformer, and the transforming circuit 7 among the present invention can be realized with switching mode power supply transformer; Telecommunication circuit in the described intelligent intrinsic safety electric source 4 is a prior art.
In downhole intelligent intrinsic safety type power net of the present invention system, the constant current by the certain power of constant-current source 1 output according to the actual power needs, articulates intelligent intrinsic safety electric source 4 on this networking, carry out burning voltage output.
The principle of intelligent intrinsic safety electric source 4 is among the present invention: alternating current is after input source is imported intelligent intrinsic safety electric source 4, earlier through the rectifying and wave-filtering first time, alternating current is converted to direct current, part of direct current enters accessory power supply, the forceful electric power that accessory power supply is incited somebody to action behind the rectifying and wave-filtering first time is converted to light current, another part direct current enters rechargeable battery rechargeable battery is charged, the last part direct current enters transforming circuit 7, rechargeable battery also links to each other with transforming circuit 7, transforming circuit 7 is made up of switch and transformer, can realize with switching mode power supply transformer, through behind the transforming circuit 7, again direct current is carried out the rectifying and wave-filtering second time, become intrinsic safety output behind two-stage voltage stabilizing and the two level current limiting.In order to control the stability of intrinsic safety output voltage, the direct current of intrinsic safety output can enter a control circuit 6, it is feedback circuit, control circuit 6 comprises sample circuit, compare amplifying circuit, the DSP control circuit, base drive circuit and accessory power supply, the direct current of intrinsic safety output is after the over-sampling circuit sampling, compare with the reference voltage that pre-sets, comparison signal is through being amplified into the DSP control circuit, control by software programming, DSP control circuit output pwm signal, by regulating impulse frequency or duty ratio, drive the switch in the transforming circuit 7, finally export suitable direct voltage, the DSP control circuit is its power supply by accessory power supply, for meeting the needs of, intelligent intrinsic safety electric source 4 can carry out the output of 5V-24V multichannel.In addition, the PC control signal can enter the DSP control circuit through power line carrier interface, to intrinsic safety output carrying out remote control and regulation.
The input source of intelligence intrinsic safety electric source 4 can be dual mode, and promptly constant-current source 1 and exchanges 127V input allows to import and fluctuates ± 20%, according to environment for use, and corresponding input interface.In the place that constant-current source 1 power supply is arranged, use the instrument transformer principle, association class is the deck structure of pincerlike meter seemingly, intelligent intrinsic safety electric source 4 is stuck on constant-current source 1 service cable get final product, and has increased the flexibility that intrinsic safety electric source uses.
It is that serial data bus interface, power line carrier interface, PMbus are the power management bus interface that this intelligent intrinsic safety electric source 4 is furnished with UART.By power line carrier interface, intelligent intrinsic safety electric source 4 can carry out communication with host computer, and host computer is controlled the output of intelligent intrinsic safety electric source 4 by the power line transmission control signal.Pass through serial data bus interface, intelligence intrinsic safety electric source 4 can connect intrinsic safety display screen, intrinsic safety keyboard and intrinsic safety mouse in the down-hole, realization is to the down-hole configuration of intelligent intrinsic safety electric source 4, the particular content of configuration comprises: on off state, output voltage and priority, serial data bus interface can be interfaces such as RS232.Described power line carrier technology is a prior art.
Electric power network node 3 is provided with Ethernet interface among the present invention, like this, not only can control intelligent intrinsic safety electric source 4 in the down-hole by touch-screen, also can be by the Long-distance Control of Ethernet realization to intelligent intrinsic safety electric source 4.
Claims (5)
1. downhole intelligent intrinsic safety type power net is characterized in that: comprise direct current or AC constant-current source (1) that constant current is provided, connect the main closed loop (2) of constant-current source (1) input and output;
Upward be mounted with electric power network node (3), removable card jaw type intelligence intrinsic safety electric source (4) at described main closed loop (2), communicate by letter by the mode of power line carrier between electric power network node (3) and the intelligent intrinsic safety electric source (4) by pincerlike structure.
Described electric power network node (3) comprises master controller, serial data bus interface, power line carrier interface, power management bus interface, Ethernet interface and touch-screen, and master controller is connected with serial data bus interface, power line carrier interface, power management bus interface, Ethernet interface, touch-screen respectively; Electric power network node (3) carries out the control of remote switch state and output voltage by Ethernet and inner master controller to intelligent intrinsic safety electric source (4), and output current is done the self adaptation adjustment along with the difference of output voltage according to the intrinsic safety curve;
Described intelligent intrinsic safety electric source (4) is made up of intrinsic safety translation circuit (5), control circuit (6) and telecommunication circuit, described intrinsic safety translation circuit (5) is made up of the current rectifying and wave filtering circuit, transforming circuit (7), secondary current rectifying and wave filtering circuit, two-stage voltage stabilizing circuit, two level current limiting circuit and the intrinsic safety output port that connect successively, and telecommunication circuit is made up of power line carrier communication circuit, asynchronous serial communication circuit;
Described control circuit (6) comprising: accessory power supply, the DSP control circuit, base drive circuit, compare amplifying circuit and sample circuit, its structure is: accessory power supply links to each other with the DSP control circuit, be the power supply of DSP control circuit, the input of sample circuit links to each other with the two-stage voltage stabilizing circuit of intrinsic safety translation circuit (5) and the output of two level current limiting circuit respectively, the output of sample circuit links to each other with the input that compares amplifying circuit, relatively the output of amplifying circuit links to each other with the DSP control circuit, the DSP control circuit links to each other with base drive circuit simultaneously, and base drive circuit links to each other with transforming circuit (7); Also be provided with a plurality of communication interfaces on the DSP control circuit.
2. downhole intelligent intrinsic safety type power net according to claim 1, the control method that it is characterized in that described control circuit (6) is: the output in two-stage voltage stabilizing circuit and the two poles of the earth current-limiting circuit is sampled to electric current and voltage in real time, after the sampling sampled voltage is amplified through comparing amplifying circuit, compare with the reference voltage of setting then, if actual intrinsic safety output valve is less than reference voltage, by the DSP control circuit transforming circuit (7) is adjusted, increase the frequency or the duty ratio of pulse in the transforming circuit (7), pass through secondary rectifying and wave-filtering and two-stage voltage stabilizing current limliting again, last intrinsic safety output; If actual intrinsic safety output valve greater than reference voltage, is adjusted transforming circuit (7) by the DSP control circuit, reduce the frequency or the duty ratio of pulse in the transforming circuit (7), pass through secondary rectifying and wave-filtering and two-stage voltage stabilizing current limliting again, last intrinsic safety output.
3. downhole intelligent intrinsic safety type power net according to claim 1, it is characterized in that described electric power network node (3) to the control method of intelligent intrinsic safety electric source (4) is: at first, electric power network node (3) carries out address and rank registration to each the intelligent intrinsic safety electric source (4) in the network; Then, intelligent intrinsic safety electric source (4) is connected to electric power network node (3) application; Then, electric power network node (3) just decides the connection of intelligent intrinsic safety electric source (4) according to the network load state by rank, and sets output voltage values; Loading in network exceeds standard, and electric power network node (3) is closed low-level intelligent intrinsic safety electric source (4) successively according to the rank of intelligent intrinsic safety electric source (4) in the network, and is normal until whole network load.
4. according to any described downhole intelligent intrinsic safety type power net of claim 1-3, it is characterized in that: the communication interface that is provided with on the DSP control circuit is serial data bus interface, power line carrier interface and power management bus interface.
5. according to any described downhole intelligent intrinsic safety type power net of claim 1-3, it is characterized in that: between current rectifying and wave filtering circuit and transforming circuit (7), be provided with rechargeable battery as stand-by power supply.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201010577568 CN102013730B (en) | 2010-12-04 | 2010-12-04 | Underground intelligent intrinsic safety type power supply network |
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| CN 201010577568 CN102013730B (en) | 2010-12-04 | 2010-12-04 | Underground intelligent intrinsic safety type power supply network |
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| CN102013730B CN102013730B (en) | 2012-12-05 |
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Cited By (1)
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| CN102710151A (en) * | 2012-06-07 | 2012-10-03 | 湘煤立达矿山装备股份有限公司 | Inherent safety switch power supply for mine |
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2010
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