CN100338846C - Countryside low-voltage electric distribution network automatization controlling device and its method - Google Patents
Countryside low-voltage electric distribution network automatization controlling device and its method Download PDFInfo
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- CN100338846C CN100338846C CNB2005100776511A CN200510077651A CN100338846C CN 100338846 C CN100338846 C CN 100338846C CN B2005100776511 A CNB2005100776511 A CN B2005100776511A CN 200510077651 A CN200510077651 A CN 200510077651A CN 100338846 C CN100338846 C CN 100338846C
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02B90/20—Smart grids as enabling technology in buildings sector
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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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
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/126—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wireless data transmission
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Abstract
The present invention relates to an automatic monitoring device for a low-voltage distribution network in rural areas, which comprises an upper supervisor and a lower machine. A circuit structure of the present invention is mainly divides into a GSM communications unit, a single chip computer program control unit, a data acquisition unit, a three-phase current and voltage sampling unit, a relay unit, a distribution and conversion state testing unit and a power supply circuit. The device is used for monitoring the running condition of the low-voltage distribution network in the rural areas in long distance, and is simultaneously suitable for the load test and the monitoring of power consumers.
Description
Technical field
The present invention relates to a kind of countryside low-voltage electric distribution network automatization controlling device and method thereof.
Background technology
In rural low voltage network; stolen and the impaired phenomenon of electric power facility is very serious; and the current voltage of distribution transforming; three-phase current must be by artificial to in-site measurement; like this; the distribution transformer operation conditions can't realize remote monitoring; just can not in time understand whether balance of circuit three-phase load; whether voltage is qualified; too high so that the phenomenon that burn of distribution transforming excess load temperature rise happens occasionally; even the stolen incident of some places generation distribution transformer, in addition, if after the RCD tripping operation; the manager also can't in time know, thereby can not in time recover to send.
Summary of the invention
The object of the present invention is to provide a kind of countryside low-voltage electric distribution network automatization controlling device and method thereof, it has not only overcome the defective of prior art, can possess the advantage that the operation conditions of countryside low-voltage electric distribution network is realized remote monitoring, but also be applicable to the load monitoring and the monitoring of power consumer simultaneously.
Countryside low-voltage electric distribution network automatization controlling device of the present invention comprises upper managing computer and slave computer; the structure of host computer mainly comprises GSM note transport module; chip microprocessor; level shifting circuit; wherein said GSM note transport module is used for finishing and receives and send short message; chip microprocessor is used for monitoring and management GSM note transport module; upper managing computer is carried out the computer management operation; with power supply station or electricity consumption service centre of electric company is unit; one of each power supply station or the configuration of electricity consumption service centre; all operations is finished on computers by program unit; upper managing computer can be by serial ports or USB interface to interconnect; described program unit mainly comprises the controlled area; display field and relevant database; described controlled area is used for sending instruction to slave computer; described display field is used for showing the short message content that slave computer sends, and described database comprises the display field Content Management; platform sheet distribution transforming machine account; employee's machine account; the work ticket management; the RCD management; the typing of checking meter links with marketing management system.Slave computer is a unit with the platform sheet, and promptly every transformer is equipped with a slave computer, and slave computer comprises the gsm communication circuit, single chip circuit, data acquisition circuit, relay circuit and power circuit etc.; Upper managing computer and slave computer are by the wireless connections of modern GSM mobile communications network, thus the long-range and trans-regional transmission of realization data.The circuit structure of whole countryside low-voltage electric distribution network automatization controlling device mainly is divided into gsm communication unit, Single Chip Microcomputer (SCM) program control unit, data acquisition unit, three-phase current-voltage sample unit, relay unit, distribution transforming state detection unit and this several sections of power circuit.
Upper managing computer and slave computer all comprise a gsm communication unit, described gsm communication unit mainly is made up of JB35G note transport module and single-chip microcomputer, it also can adopt the TC35i model note transport module of Siemens TC35 series and single-chip microcomputer to form, described JB35G note transport module comes transceive data by the GSM SMS platform, be mainly used to set up wireless channel, receive and send short message; A RS232 serial ports and a TTL serial ports are arranged on the JB35G module, described RS232 serial ports can connect the COM serial port of computer, described TTL serial ports can connect the serial ports of single-chip microcomputer, described single-chip microcomputer is mainly used to control JB35G note transport module, and the short message information of receiving is made an explanation and carries out.
The Single Chip Microcomputer (SCM) program control unit is formed two cpu models by AT89S51 and two single-chip microcomputers of AT90S8515, external memory storage adopts AT24C04 to store data, MAX232 finish and the RS232 of computer between communication, CD4094 finishes eight tunnel isolation drive that the output serial mode transfers parallel schema to.
Described data acquisition unit mainly uses the ADC0809 A/D converter, function is to become the analog signal conversion of three-phase current-voltage sampling circuit collection digital signal to give microprocessor AT89S51, ADC0809 inside has output latch, can directly link to each other with the AT89S51 single-chip microcomputer, ADC0809 is the cmos component that has the control logic of 8 A/D converters, No. 8 variable connectors and microprocessor compatibility, it is a successive approximation type a/d converter, can with the single-chip microcomputer direct interface.ADC0809 is made up of one 8 path analoging switch, address latch and decoder, an A/D converter and a ternary output latch.Variable connector is chosen as 8 analog channels, allows 8 tunnel analog quantity timesharing input, and shared A/D converter is changed.Ternary output lock device is used to latch the digital quantity that A/D converts, and when the OE end is high level, just can take the data that convert away from ternary output latch.ALE is that address latch allows incoming line, and high level is effective, and when the ALE line was high level, address latch and decoder be A, B, and the address signal of three address wires of C latchs, and the analog quantity of selected passage is changed by transducer after deciphering.A, B and C are address input line, are used for the road analog quantity input on the gating IN0-IN7.ST is a conversion starting signal, when ST go up to jump along the time, all internal register zero clearings, following jumping along the time, begin to carry out A/D and change.In the transition period, ST should keep low level.EOC is the EOC signal, when EOC is high level, shows EOC, otherwise, show and carry out the A/D conversion.OE is used to control the data that three output latches are converted to single-chip microcomputer output for output allows signal.D0-D7 is the digital quantity output line, in order to satisfy ADC0809 to the input analog amount requirement, adopts transducer alternating current to be become the direct voltage of 0～5V for its sampling with voltage transitions.
Described distribution transforming state detection unit mainly is made up of 8 photoelectrical couplers (model is P521); these photoelectrical couplers can detect the abnormal running state of 1-8 place distribution transforming equipment as required; make the P10-P17 pin of microprocessor AT89S51 become low level; so that microprocessor is carried out relevant program; when RCD tripping operation or distribution transforming device A; B; C three-phase input voltage any one mutually or severally go offline mutually; or since the thief for isolated high-voltage with A; B; when the C three-phase input voltage cuts off; can in time information be sent to the single-chip microcomputer of distribution transforming, be sent to upper managing computer through the gsm communication unit again.
Described three-phase current-voltage sample unit is made of three current-voltage transducers and a voltage-voltage sensor, function is to gather analog signal, then, by OUT1-OUT4 output, the miniature series sensor that transducer can select for use Beijing star lattice or Huo Yuan company to produce.
Described relay unit is by No. eight relays output of adopting the light idol to isolate, and relay is mainly selected the small-sized DC relay of 12V for use.
In addition, if the gsm communication unit of the slave computer of countryside low-voltage electric distribution network automatization controlling device of the present invention adopts the TC35i model of Siemens TC35 series, data acquisition unit uses the TLC2543 A/D converter, to save 51 Series chip resources greatly so, and promptly only need a slice AT89S51 single-chip microcomputer just can finish all work.
The present invention implements the wireless-transmission network that automatically-monitored method adopts the gsm communication network to connect to countryside low-voltage electric distribution network, realize by slave computer and upper managing computer with the note form, upper managing computer mainly comprises service data inquiry to the distribution transforming control of being correlated with, reset operation after the RCD tripping operation, the limit value setting of distribution transformer, excess load is promptly operated a switch, the request of checking meter etc., above all operations is finished on computers by program unit, described program unit mainly comprises the controlled area, display field and relevant database, described controlled area is used for sending instruction to slave computer, described display field is used for showing the short message content that slave computer sends, and described database comprises the display field Content Management, platform sheet distribution transforming machine account, employee's machine account, the work ticket management, the RCD management, the typing of checking meter links with marketing management system; Slave computer is at first gathered distribution transforming work at present voltage by data acquisition unit; three-phase current; parameters such as temperature; become the required digital signal of single-chip microcomputer by the analog signal conversion that mould/the number conversion circuit is come collection then; whether the distribution transforming state detection unit detects 1-8 road RCD and whether moves and detect distribution transformer and have stolen etc. unusual; analog signal is gathered in three-phase current-voltage sample unit; and convert thereof into digital signal and give microprocessor AT89S51; accept by the gsm communication unit and send short message, the process of its monitoring mainly is divided into following steps.The one, the RCD tripping alarm; The 2nd, the distribution transformer value that transfinites is reported to the police; The 3rd, distribution transformer generation abnormal conditions are reported to the police, and the 4th, upper managing computer be correlated with to distribution transforming and is controlled etc.
The RCD tripping alarm is by single-chip microcomputer detection line switch deciliter state, if tripping operation and automatic reclosing failure are arranged, then slave computer is reported to the police to host computer, " ... platform becomes ... line tripping; The distribution transforming current working current is the A phase ... the B phase ... the C phase ... voltage is ... temperature is ... " etc. content send to host computer by GSM note transport module with the short message form, request the person on duty dispose.
It is that single-chip microcomputer compares data that collect and the distribution transforming allowable value that sets in advance that distribution transformer transfinites that value reports to the police, if transfinite, then slave computer is reported to the police to host computer, " distribution transforming is transfinited! The distribution transforming current working current is the A phase ... the B phase ... the C phase ... voltage is ... temperature is ... " content of short message send to host computer by GSM note transport module with the short message form, request the person on duty dispose.
Slave computer was reported to the police to host computer rapidly, " unusual dangerous situation takes place so-and-so platform sheet distribution transformer, please disposes rapidly when abnormal conditions such as distribution transformer is stolen took place! " etc. content send to host computer by GSM note transport module with the short message form, request the person on duty dispose.
Slave computer is discerned comparison to the number of host computer and instruction after receiving the short message of host computer " ... circuit RCD trial line charging ", after confirming that instruction is correct and authority being arranged, instigates relay actuator execution command.As the success that resets, then this task is finished, otherwise reports to the police to host computer once more, and request the person on duty dispose.
After slave computer is received the short message of host computer " current service data inquiry ", the number of host computer and instruction are discerned comparison, affirmation is instructed correctly and after authority is arranged, contents such as " the distribution transforming service data: electric current are the A phase ... the B phase ... the C phase ... voltage is ... temperature is ... " is sent to host computer by GSM note transport module with the short message form.
After slave computer is received the short message of host computer " the distribution transformer load limit value is provided with; lower voltage limit is ... upper voltage limit is ... upper current limit is ... temperature upper limit is ... ", the number of host computer and instruction are discerned comparison, after confirming that instruction is correct and authority being arranged, automatically change limit value, and contents such as " setting of distribution transformer load limit value is finished, and new value is set be: lower voltage limit are ... upper voltage limit is ... upper current limit is ... temperature upper limit is ... " sends to host computer by GSM note transport module with the short message form.
After slave computer is received the short message of host computer " ... circuit negative control operate a switch ", the number of host computer and instruction are discerned comparison, after confirming that instruction is correct and authority being arranged, instigate relay actuator to disconnect the on-load switch of corresponding line, and contents such as " ... the negative control of circuit executed is operated a switch " is sent to host computer by GSM note transport module with the short message form.
After slave computer is received the short message of host computer " ... the negative control cancellation of circuit request is closed a floodgate ", the number of host computer and instruction are discerned comparison, after confirming that instruction is correct and authority being arranged, instigate the relay actuator on-load switch of corresponding line that closes, and contents such as " ... circuit executed close a floodgate power supply " is sent to host computer by GSM note transport module with the short message form
After slave computer is received the short message that host computer " makes a copy of platform sheet summary table ", the number of host computer and instruction are discerned comparison, after confirming that instruction is correct and authority being arranged, " current total degree of a representation is ... electric current is the A phase ... the B phase ... the C phase ... voltage is ... temperature is ... " etc. content send to host computer by GSM note transport module with the short message form.
This system works ticket management comprises turnkey console account and field control, control method is: as long as the work ticket of registering away through this system, if after the ticket termination formality of finishing the work, do not report to power supply station's night shift room, controlled by slave computer because of on-the-spot power distribution equipment secondary control loop, can not recover to send the electricity operation.
Above-mentioned all functions all can be with finishing through the regular handset of authorizing, and no matter wherever platform sheet manager also can monitor at any time to local distribution transforming.
The present invention has realized the automatically-monitored of countryside low-voltage electric distribution network, reduced line rural power personnel labour intensity, but it is voltage, three-phase current and the working temperature of the work at present of remote monitoring distribution transformer not only, and can carry out remote alarms to the improper outage of distribution transformer, play effects such as the antitheft and timely disposal of anti-theft fault.And after the RCD tripping operation, report the platform sheet title of tripping operation immediately to power supply station, line name, the voltage of distribution transformer work at present, contents such as three-phase current and working temperature.
Description of drawings
With embodiment the present invention is described in further detail with reference to the accompanying drawings.
Fig. 1 is the circuit structure schematic diagram of countryside low-voltage electric distribution network automatization controlling device of the present invention;
Fig. 2 is the network connection diagram of the upper managing computer and the slave computer of countryside low-voltage electric distribution network automatization controlling device of the present invention;
Fig. 3 is the workflow schematic diagram of the slave computer of countryside low-voltage electric distribution network automatization controlling device of the present invention;
Fig. 4 is the workflow schematic diagram of the upper managing computer of countryside low-voltage electric distribution network automatization controlling device of the present invention;
Embodiment
The circuit structure of countryside low-voltage electric distribution network automatization controlling device of the present invention shown in Figure 1 mainly is divided into (A part) distribution transforming state detection unit, (B part) three-phase current-voltage sample unit, (C part) data acquisition unit, (D part) Single Chip Microcomputer (SCM) program control unit, (E part) gsm communication unit, (F part) relay unit and this several sections of (G part) power circuit.
Described distribution transforming state detection unit mainly is made up of 8 photoelectrical couplers (model is P521); these photoelectrical couplers can detect the abnormal running state of 1-8 place distribution transforming equipment as required; make the P1.0-P1.7 pin of microprocessor AT89S51 become low level; so that microprocessor is carried out relevant program; when RCD tripping operation or distribution transforming device A; B; C three-phase input voltage any one mutually or severally go offline mutually; or since the thief for isolated high-voltage with A; B; when the C three-phase input voltage cuts off; can in time information be sent to the single-chip microcomputer of distribution transforming, be sent to upper managing computer through the gsm communication circuit again.
Described three-phase current-voltage sample unit is made of three current-voltage transducers and a voltage-voltage sensor, function is to gather analog signal, then, by OUT1-OUT4 output, the miniature series sensor that transducer can select for use Beijing star lattice or Huo Yuan company to produce.
Described data acquisition unit mainly uses the ADC0809 A/D converter, function is to become the analog signal conversion of three-phase current-voltage sampling circuit collection digital signal to give microprocessor AT89S51, ADC0809 inside has output latch, can directly link to each other with the AT89S51 single-chip microcomputer, ADC0809 is the cmos component that has the control logic of 8 A/D converters, No. 8 variable connectors and microprocessor compatibility, it is a successive approximation type a/d converter, can with the single-chip microcomputer direct interface.ADC0809 is made up of one 8 path analoging switch, address latch and decoder, an A/D converter and a ternary output latch.Variable connector is chosen as 8 analog channels, allows 8 tunnel analog quantity timesharing input, and shared A/D converter is changed.Ternary output lock device is used to latch the digital quantity that A/D converts, and when the OE end is high level, just can take the data that convert away from ternary output latch.ALE is that address latch allows incoming line, and high level is effective, and when the ALE line was high level, address latch and decoder be A, B, and the address signal of three address wires of C latchs, and the analog quantity of selected passage is changed by transducer after deciphering.A, B and C are address input line, are used for the road analog quantity input on the gating IN0-IN7.ST is a conversion starting signal, when ST go up to jump along the time, all internal register zero clearings, following jumping along the time, begin to carry out A/D and change.In the transition period, ST should keep low level.EOC is the EOC signal, when EOC is high level, shows EOC, otherwise, show and carry out the A/D conversion.OE allows signal for output, be used to control the data that three output latches are converted to single-chip microcomputer output, D0-D7 is the digital quantity output line, in order to satisfy ADC0809 to the input analog amount requirement, adopts transducer alternating current to be become the direct voltage of 0～5V for its sampling with voltage transitions.
Described Single Chip Microcomputer (SCM) program control unit is formed two cpu models by AT89S51 and 8,515 two single-chip microcomputers of AT90S, external memory storage adopts AT24C04 to store data, MAX232 finish and the RS232 of computer between communication, CD4094 finishes eight tunnel isolation drive that the output serial mode changes parallel schema.
Described gsm communication unit mainly is made up of JB35G note transport module and single-chip microcomputer, it also can adopt the TC35i model note transport module of Siemens TC35 series and single-chip microcomputer to form, described JB35G note transport module comes transceive data by the GSM SMS platform, be mainly used to set up wireless channel, receive and send short message; A RS232 serial ports and a TTL serial ports are arranged on the JB35G module, described RS232 serial ports can connect the COM serial port of computer, described TTL serial ports can connect the serial ports of single-chip microcomputer, described single-chip microcomputer is mainly used to control JB35G note transport module, and the short message information of receiving is made an explanation and carries out.
Described relay unit is by No. eight relays output of adopting the light idol to isolate, and relay is mainly selected the small-sized DC relay of 12V for use.
In addition, the effect of described power circuit is to provide required working power for whole low-voltage electric distribution network automatization controlling device.
Fig. 2 is the network connection diagram of countryside low-voltage electric distribution network automatization controlling device of the present invention, as seen from the figure, countryside low-voltage electric distribution network automatization controlling device of the present invention comprises upper managing computer and slave computer, host computer is carried out the computer management operation, with power supply station or electricity consumption service centre of electric company is unit, one of each power supply station or the configuration of electricity consumption service centre, all operations is finished on computers by program unit, upper managing computer can be by serial ports or USB interface to interconnect, slave computer is a unit with the platform sheet, be that every transformer is equipped with a slave computer, upper managing computer and slave computer are by the wireless connections of modern GSM mobile communications network, thus the long-range and trans-regional transmission of realization data.
Fig. 3 is the slave computer workflow schematic diagram of countryside low-voltage electric distribution network automatization controlling device of the present invention; as seen from the figure; at first gather distribution transforming work at present voltage by data acquisition unit; three-phase current; parameters such as temperature; become the required digital signal of single-chip microcomputer by the analog signal conversion that mould/the number conversion circuit is come collection then; whether the distribution transforming state detection unit detects 1-8 road RCD and whether moves and detect distribution transformer and have stolen etc. unusual; analog signal is gathered in three-phase current-voltage sample unit; and convert thereof into digital signal and give microprocessor AT89S51, accept and send short message by the gsm communication unit again.
Fig. 4 is the upper managing computer workflow schematic diagram of countryside low-voltage electric distribution network automatization controlling device of the present invention; upper managing computer mainly comprises service data inquiry to the distribution transforming control of being correlated with; reset operation after the RCD tripping operation; the limit value setting of distribution transformer; excess load is promptly operated a switch; the request of checking meter etc.; above all operations is finished on computers by program unit; described program unit mainly comprises the controlled area; display field and relevant database; described controlled area is used for sending instruction to slave computer; described display field is used for showing the short message content that slave computer sends, and described database comprises the display field Content Management; platform sheet distribution transforming machine account; employee's machine account; the work ticket management; the RCD management; the typing of checking meter links with marketing management system.
Above-described only is preferred implementation of the present invention.Should be pointed out that for the person of ordinary skill of the art under the prerequisite that does not break away from the principle of the invention, can also make some modification and improvement, these also should be considered as belonging to protection scope of the present invention.
Claims (9)
1. countryside low-voltage electric distribution network automatization controlling device, comprise upper managing computer and slave computer, it is characterized in that: this device is divided into the gsm communication unit of realizing remote data and trans-regional transfer function, power system monitor is realized the Single Chip Microcomputer (SCM) program control unit of central authorities' control, the operation of power networks status data is carried out the data acquisition unit of acquisition process, three-phase current-voltage sample unit, relay unit, detect distribution transforming state detection unit and this several sections of power circuit of distribution transforming equipment abnormal running state, wherein, described Single Chip Microcomputer (SCM) program control unit connects the distribution transforming state detection unit, data acquisition unit and gsm communication unit, described three-phase current-voltage sample unit links to each other with data acquisition unit, described power circuit is connected in the input of this device, be used to this device that required working power is provided, relay unit connects the output as this device, and this relay unit comprises No. eight relay export structures that adopt light-coupled isolation.
2. countryside low-voltage electric distribution network automatization controlling device as claimed in claim 1, it is characterized in that: described gsm communication unit mainly is made up of note transport module and single-chip microcomputer, described note transport module comes transceive data by the GSM SMS platform, be mainly used to set up wireless channel, receive and send short message, described single-chip microcomputer is mainly used to control the note transport module, and the short message information of receiving is made an explanation and carries out.
3. countryside low-voltage electric distribution network automatization controlling device as claimed in claim 2, it is characterized in that: described Single Chip Microcomputer (SCM) program control unit is formed two cpu models by AT89S51 and two single-chip microcomputers of AT90S8515, external memory storage adopts AT24C04 to store data, MAX232 finish and the RS232 of computer between communication, CD4094 finishes eight tunnel isolation drive that the output serial mode changes parallel schema.
4. countryside low-voltage electric distribution network automatization controlling device as claimed in claim 3, it is characterized in that: described data acquisition unit comprises ADC0809 A/D converter and transducer, wherein, described transducer becomes alternating current the direct voltage of 0～5V for the sampling of ADC0809 A/D converter with voltage transitions.
5. countryside low-voltage electric distribution network automatization controlling device as claimed in claim 4, it is characterized in that: described distribution transforming state detection unit mainly is made up of 8 photoelectrical couplers, these photoelectrical couplers are used to detect the abnormal running state of 1-8 place distribution transforming equipment, make the P10-P17 pin of single chip computer AT 89S51 become low level to carry out relevant program, and in time information is sent to the single-chip microcomputer of distribution transforming, is sent to upper managing computer through the gsm communication unit again.
6. countryside low-voltage electric distribution network automatization controlling device as claimed in claim 5 is characterized in that: described three-phase current-voltage sample unit is made of three current-voltage transducers and a voltage-voltage sensor.
7. method that countryside low-voltage electric distribution network is automatically-monitored, it is characterized in that: the wireless-transmission network that adopts the gsm communication network to connect, realize by slave computer and upper managing computer with the note form, upper managing computer is to the distribution transforming control of being correlated with, mainly comprise the request of promptly operating a switch, check meter of reset operation, the limit value setting of distribution transformer, excess load after service data inquiry, the RCD tripping operation, above all operations is finished on computers by program unit; Slave computer is at first gathered the distribution transforming parameter by data acquisition unit; mainly comprise: work at present voltage, three-phase current, temperature; become the required digital signal of single-chip microcomputer by the analog signal conversion that mould/the number conversion circuit is come collection then; whether the distribution transforming state detection unit detects 1-8 road RCD and whether moves and detect distribution transformer and have stolen unusually, accepts and send short message by the gsm communication unit again.
8. the automatically-monitored method of countryside low-voltage electric distribution network as claimed in claim 7; it is characterized in that: described program unit mainly comprises controlled area, display field and relevant database; described controlled area is used for sending instruction to slave computer; described display field is used for showing the short message content that slave computer sends, and described database comprises display field Content Management, platform sheet distribution transforming machine account, employee's machine account, work ticket management, RCD management, the typing of checking meter links with marketing management system.
9. the automatically-monitored method of countryside low-voltage electric distribution network as claimed in claim 8, it is characterized in that: the process of its monitoring mainly is divided into following steps, and the one, the RCD tripping alarm; The 2nd, the distribution transformer value that transfinites is reported to the police; The 3rd, distribution transformer generation abnormal conditions are reported to the police, and the 4th, upper managing computer is to the distribution transforming control of being correlated with.
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| CN101577183B (en) * | 2009-06-17 | 2011-06-01 | 西安工程大学 | Indoor switch state reminder for electric power system |
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| CN103499756A (en) * | 2013-09-29 | 2014-01-08 | 周力行 | Leakage protector supervisory system and method |
| CN103683508A (en) * | 2013-12-13 | 2014-03-26 | 国家电网公司 | Long-distance intelligent fault monitoring isolation system for country low-voltage power network |
| CN109372346A (en) * | 2018-11-23 | 2019-02-22 | 南宁职业技术学院 | GSM coded lock |
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| CN1347184A (en) * | 2000-10-11 | 2002-05-01 | 陈钢 | Distribution load monitor system |
| JP2004040641A (en) * | 2002-07-05 | 2004-02-05 | Hiromasa Kobayashi | Centralized control system for private substation facility |
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| CN1722566A (en) | 2006-01-18 |
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