CN104319890A - Intelligent low-voltage load automatic transfer control device and control method thereof - Google Patents
Intelligent low-voltage load automatic transfer control device and control method thereof Download PDFInfo
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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
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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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
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/20—Systems supporting electrical power generation, transmission or distribution using protection elements, arrangements or systems
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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
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/12—Energy storage units, uninterruptible power supply [UPS] systems or standby or emergency generators, e.g. in the last power distribution stages
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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
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
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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
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
- Y04S20/248—UPS systems or standby or emergency generators
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Abstract
The invention discloses an intelligent low-voltage load automatic transfer control device and a control method thereof. The control device comprises a main processor, a storage unit connected with the main processor, a DSP processing unit, an FPGA unit, an on-off input unit, a communication unit, a remote control output unit and a power supply unit for supplying power to the preceding units. The control method includes the steps that remote signaling and remote measurement information of two low-voltage incoming lines is collected, when power rationing occurs or a power supply on one side breaks down, incoming line and bus coupler switches are turned on and off after logic judgment is automatically carried out, and accordingly power supply transfer is finished and the initial state of power supply is restored. The traditional mode that a worker rushes to a site and the switches are manually turned on and off is replaced, power-off time is greatly shortened, economic loss of users is reduced, power supply reliability is improved, and meanwhile, labor intensity of workers and on-site work risks are reduced.
Description
Technical field
The present invention relates to a kind of intelligent low-pressure load automatically to turn for control device and control method thereof, there is reclosing prepared auto restart function and the operation function that restores electricity, belong to power system automatic field, be applicable to the monitoring of power distribution room, distribution transforming, the two inlet wire of box change.
Background technology
Adopt the low-voltage power distribution room of dual power supply, each power supply is separately independently-powered when normal power supply, when occur power cuts to limit consumption or side to break down etc. situation time, need generally need staff to rush towards on-site manual operation, deciliter inlet wire and bus connection switch, complete power supply and turn confession; After side restores electricity, still need staff to rush towards the initial condition of in-situ FTIR spectroelectrochemitry to power supply, therefore, easily cause and restore electricity not in time, causing trouble interruption duration is longer.Again because low-voltage customer is many, the probability broken down is also larger, so also greatly have impact on power supply reliability.
In view of this, the present inventor studies this, for overcoming above-mentioned deficiency, provides a kind of intelligent low-pressure load automatically to turn for control device and control method thereof.
Summary of the invention
The object of this invention is to provide a kind of intelligent low-pressure load turns for control device and control method thereof automatically, gathered by the remote signalling to two low pressure inlet wires, telemetry intelligence (TELINT), when occur power cuts to limit consumption or side to break down etc. situation time, automatically deciliter inlet wire and bus connection switch after Logic judgment is carried out, complete the initial condition that power supply turns for and restores electricity, shorten interruption duration widely.
To achieve these goals, solution of the present invention is:
A kind of intelligent low-pressure load turns for control device automatically, comprise primary processor, the memory cell be connected with primary processor, DSP processing unit, FPGA unit, On-off signal unit, communication unit and remote control output unit, and the power subsystem of to power for above-mentioned each unit, the input of described DSP processing unit is connected with analog quantity converting unit, voltage, the analog quantitys such as electric current are after analog quantity converting unit digits after conversion signal, send into DSP processing unit to process, each on off state value is input to primary processor by On-off signal unit, primary processor is by each related data in dma mode reading DSP processing unit and result of calculation, pass through each on off state value of I2C interface or serioparallel exchange interface read switch amount input unit simultaneously, then each on off state is controlled by remote control output unit, communicated by communication unit simultaneously, safeguard, the operations such as control.
As preferably, described primary processor adopts MCF5272 general purpose microprocessor, and model specifically can be selected to be the 32-bit primary processor of MCF5272CVF66.
As preferably, described analog-converted unit adopts model to be the conversion chip of ADS8509IDW.
As preferably, described memory cell comprises SRAM, SDRAM and FLASH RAM, and wherein, SDRAM is the working memory of primary processor; SRAM, when device power down, is powered to SRAM by battery, ensures that interior data is not lost, for storing important historical data; FLASH RAM is nonvolatile memory, runs bootstrap routine, operating system, application program, DSP program, configuration file etc. for save set.
As preferably, described DSP processing unit adopts the high integration single-chip digital signal processor ADSP-2185 of AD company.DSP uses serial port periodically to obtain sampled data by analog-converted unit, then calculates electric quantity signal in real time by digital filtering and certain mapping algorithm, reaches primary processor carry out processing, store and transmitting by DMA interface.
As preferably, described FPGA unit adopts model to be the fpga chip of APA150-TQ100I, can effectively provide various sequential and logical relation, comprise: the multi-path choice of analog input amount controls and timing conversion; Interface Controller between primary processor and DSP processing unit; Clock circuit; Digital quantity input timing controls.
As preferably, described communication unit comprises RS232 port (RS232), USB service port (USB), Ethernet interface (TCP/IP) and CAN port (CAN).
As preferably, described intelligent low-pressure load automatically turns confession control device and comprises a man-machine interaction unit further, described man-machine interaction unit adopts touch display screen, can throw the reclosing function of inlet wire 1, inlet wire 2, mother move back, stand-by period, the time of restoring electricity, cyclization voltage difference definite value, CT no-load voltage ratio ratio etc. are arranged after transformer capacity, low pressure separating brake, and can show right side voltage, warning information etc. on the left of inlet wire 1, the electric current and voltage of inlet wire 2 and power, mother.
As preferably, described power subsystem uses the DC power supply input on floating ground, by the DC/DC transducer of inside, produce+5V ,+15V and-15V altogether and altogether+24V the direct current on ground input as internal logic circuit, analog circuit and " doing " contact input Phototube Coupling current drives power supply, total power consumption is less than 8W.
Each input/output interface that intelligent low-pressure load turns automatically for control device is connected with each service entrance switch, bus connection switch, busbar voltage test point, low pressure primary voltage test point, low pressure inlet wire current test point etc. of intelligent low-voltage network 2 circuits respectively, when a wherein inlet wire fault outage, intelligent low-pressure load turns automatically for control method, and concrete steps are as follows:
Step 1-1: the trigger condition that prepared auto restart starts is formed: I section low pressure primary voltage 1U and I section busbar voltage IU ' or II section low pressure primary voltage 2U and II section busbar voltage 2U ' decompression;
Step 1-2: before intelligent low-pressure load turns confession control device calculating fault outage automatically, whether the load total amount of #1 distribution transforming and #2 distribution transforming exceedes the separate unit total capacity of the side distribution transforming that do not have a power failure, if exceeded, then automatically turned by intelligent low-pressure load and send out warning information for control device man-machine interaction unit, interrupt logic, if be no more than, then perform lower sequence step;
Step 1-3: whether primary processor detects decompression side service entrance switch in a point position, if not in a point position, by remote control output unit remote control separating brake by force, if separating brake is unsuccessful, sends out warning information, interrupt logic;
Step 1-4: whether primary processor detects non-decompression side bus voltage has pressure, if with no pressure, send and does not meet prepared auto restart operation condition, interrupt logic;
Step 1-5: whether primary processor detects bus connection switch in a point position, if co-bit, then sends out and does not meet prepared auto restart operation condition, interrupt logic;
Step 1-6: if bus connection switch is in a point position, after time delay 2 ~ 30 seconds (step-length 0.1 second), close bus connection switch by remote control output unit.
After fault inlet wire restores electricity, before system wiring recovering state to low pressure prepared auto restart action, the control method concrete steps of state are as follows:
Step 2-1: operational mode restores the trigger condition started: decompression side low pressure primary voltage is from no pressure to there being pressure;
Step 2-2: primary processor detects from no pressure to whether having pressure side low tension switch in a point position, if in co-bit, sends out and does not meet rejuvenating conditions information, interrupt logic;
Step 2-3: if in a point position, closes from the low tension switch to there being pressure side with no pressure by remote control output unit;
Step 2-4: divide bus connection switch by remote control output unit, separating brake successful procedure terminates, and separating brake is unsuccessful, sends out low pressure Electromagnetic coupling warning information, interrupt logic.
Intelligent low-pressure load of the present invention turns for control device and control method thereof automatically, by the remote signalling (remote signalling input is the location status gathering each switch) to two low pressure inlet wires, remote measurement (remote measurement input is the voltage, the current value that gather each test point) information, when occur power cuts to limit consumption or side to break down etc. situation time, automatically carry out deciliter service entrance switch and bus connection switch after some Logic judgment, complete the initial condition that power supply turns for and restores electricity.Instead of and rely on staff to rush towards scene in the past, manual operation divides the traditional approach of combination switch, shortens interruption duration greatly, decreases the economic loss of user, improves power supply reliability, reduces intensity of workers and field operation risk simultaneously.
Accompanying drawing explanation
Fig. 1 is that the present embodiment intelligent low-pressure load turns for control device system block diagram automatically;
Fig. 2 is the control method signals collecting schematic diagram that the present embodiment intelligent low-pressure load turns confession automatically.
Specific embodiment
Below in conjunction with specific embodiment and accompanying drawing, the invention will be further described, but should not limit the scope of the invention with this.
Below in conjunction with Fig. 1, Fig. 2, a kind of intelligent low-pressure load of the present embodiment is turned automatically and is described in detail for control device and control method thereof.
As shown in Figure 1, a kind of intelligent low-pressure load turns for control device automatically, comprise primary processor 1, the memory cell 2 be connected with primary processor 1, DSP processing unit 3, FPGA unit 4, On-off signal unit 6, communication unit 7, remote control output unit 8 and man-machine interaction unit 9, and the power subsystem of to power for above-mentioned each unit, the input of described DSP processing unit 3 is connected with analog quantity converting unit 5, voltage, the analog quantitys such as electric current are after analog quantity converting unit 5 digits after conversion signal, send into DSP processing unit 1 to process, each on off state value is input to primary processor 1 by On-off signal unit 6, primary processor 1 is by each related data in dma mode reading DSP processing unit 3 and result of calculation, pass through each on off state value of I2C interface or serioparallel exchange interface read switch amount input unit 6 simultaneously, then each on off state is controlled by remote control output unit 8, communicated by communication unit 7 simultaneously, safeguard, the operations such as control.
In the present embodiment, described primary processor 1 adopts MCF5272 universal host processor, and except the sampling of analog input amount, other functions all complete by the software of the MCF5272 working in 66MHz or cooperated, as: all hardware initialization, comprises the software download of DSP; All communication and the process of digital I/O mouth.Model specifically can be selected to be the 32-bit primary processor of MCF5272CVF66, to adopt ColdFire V2 kernel, and adopt 0.13 micron of Low-Power CMOS manufacture technics, operating frequency 66-MHz, 16X16 à 32 bit mac in sheet.
Memory cell 2 described in the present embodiment comprises SRAM, SDRAM and FLASH RAM, and wherein, SDRAM is the working memory of primary processor; SRAM, when device power down, is powered to SRAM by battery, ensures that interior data is not lost, for storing important historical data; FLASH RAM is nonvolatile memory, runs bootstrap routine, operating system, application program, DSP program, configuration file etc. for save set.
Described DSP processing unit 3 adopts the high integration single-chip digital signal processor ADSP-2185 of AD company, master oscillator frequenc 33MHz, a built-in DMA interface and dual serial interface, DMA interface is used for transmitting data between primary processor 1, and serial port is used for obtaining data from analog quantity converting unit 5.A small amount of logical circuit in FPGA unit 4 and a pair octal system latch complete its external interface.DSP also comprises the RAM of 80K byte, can store the data of 32K and the program code of 48K.The program code execution of DSP is stored in the flash memory of main circuit, when system electrification initialization, is loaded into by the DMA mouth of primary processor by DSP.DSP processing unit uses serial port periodically to obtain sampled data by analog input unit 5, then calculates electric quantity signal in real time by digital filtering and certain mapping algorithm, is sent to primary processor 1 carries out processing, store and transmitting by DMA interface.
Described FPGA unit 4 is connected with primary processor 1 with analog input unit 5, DSP processing unit 3 respectively, and FPGA unit 4 internal logic circuit comprises: the multi-path choice of analog input amount controls and timing conversion; Interface Controller between primary processor 1 and DSP; Clock circuit and digital quantity input timing control.DSP needs the accurate sampling interval to the analysis of ac input signal, therefore addressing and the timing of multipath conversion and A/D conversion is controlled by FPGA, digital phase-locked loop adjustment sampling clock is synchronous with power frequency, primary processor 1, by the change of FPGA dynamic following work frequency, ensures sampling period always 128 sampled point/cycles of of ac.
Described communication unit 7 comprises RS232 port (RS232), USB service port (USB), Ethernet interface (TCP/IP) and CAN port (CAN), and wherein, CAN port (CAN) is for optional.
Described power subsystem uses the DC power supply input on floating ground, by the DC/DC transducer of inside, produce+5V ,+15V and-15V altogether and altogether+24V the direct current on ground input as internal logic circuit, analog circuit and " doing " contact input Phototube Coupling current drives power supply, total power consumption is less than 8W.
Described man-machine interaction unit 9 uses touch display screen, can display unit analog quantity, quantity of state, protection information, warning information and device common function setting option by touch display screen.Panel adopts 6 key rubber keys, can be user-friendly.Device indicator light is had at device panel, can direct observation device running status by run indicator, simultaneously can the generation etc. of alarm protection information.
Be illustrated in figure 2 #1 distribution transforming (#1PB) and #2 distribution transforming (#2PB) wiring schematic diagram, judge whether inlet wire has pressure to judge from the voltage of #1, #2 step down side.Therefore, respectively inlet wire 1 switch 1DL, inlet wire 2 switch 2DL and bus connection switch ML 3 switches are monitored, 4 groups of voltages need be detected, be respectively on front side of 1DL, 2DL and the three-phase voltage of the ML left and right sides.1DL, 2DL, ML are frame-type intelligent breaker, band motor-operating mechanism.In the present embodiment, intelligent low-pressure load turns automatically needs collection 18 road analog input for control device, 3 tunnel remote controls export, 12 tunnel remote signalling inputs (remote signalling input is the location status gathering switch, and it is control to switch that remote control exports).The reclosing function that man-machine interaction unit 9 can turn control method inlet wire 1/ inlet wire 2/ mother of confession automatically to intelligent low-pressure load throw move back, stand-by period, the time of restoring electricity, cyclization voltage difference definite value, CT no-load voltage ratio ratio etc. are arranged after transformer capacity, low pressure separating brake, and can show right side voltage, warning information etc. on the left of the electric current and voltage of inlet wire 1/ inlet wire 2 and power, mother.
When inlet wire 1 fault outage, intelligent low-pressure load turns as follows for control method concrete steps automatically:
Each input/output interface that intelligent low-pressure load turns automatically for control device is connected with each service entrance switch, bus connection switch, busbar voltage test point, low pressure primary voltage test point, low pressure inlet wire current test point etc. of intelligent low-voltage network 2 circuits respectively, is specially:
1. remote signalling information gathering: inlet wire 1(JX1) switch 1DL, inlet wire 2(JX2) switch 2DL, bus connection switch ML switch deciliter information;
2. telemetry intelligence (TELINT) collection: I section busbar voltage IU ' (1Uan ', 1Ubn ', 1Ucn ') and II section busbar voltage 2U ' (2Uan ', 2Ubn ', 2Ucn ');
3. remote control: inlet wire 1 switch 1DL, inlet wire 2 switch 2DL remote control separating brake, bus connection switch ML remote control is closed a floodgate.
Step 1-1: the trigger condition that prepared auto restart starts is formed: carry out I section low pressure primary voltage 1U and the I section busbar voltage IU ' decompression of 1;
Step 1-2: before intelligent low-pressure load turns confession control device calculating fault outage automatically, whether the load total amount of #1 distribution transforming and #2 distribution transforming exceedes the separate unit total capacity of the side distribution transforming that do not have a power failure (#2 distribution transforming), if exceeded, then automatically turn for control device man-machine interaction unit 9 warning information by intelligent low-pressure load, interrupt logic, if be no more than, then perform lower sequence step;
Step 1-3: whether primary processor 1 detects decompression side service entrance switch 1DL in a point position, if not in a point position, by remote control output unit 8 remote control separating brake by force, if separating brake is unsuccessful, sends out warning information, interrupt logic;
Step 1-4: if service entrance switch 1DL is in a point position, whether primary processor 1 detects non-decompression side bus voltage 2U ' has pressure, if with no pressure, send and does not meet prepared auto restart operation condition, interrupt logic;
Step 1-5: whether primary processor 1 detects bus connection switch ML in a point position, if co-bit, then sends out and does not meet prepared auto restart operation condition, interrupt logic;
Step 1-6: if bus connection switch ML is in a point position, after time delay 10 seconds (step-length 0.1 second), close bus connection switch ML by remote control output unit 9.
After fault inlet wire restores electricity, before system wiring recovering state to low pressure prepared auto restart action, the control control method concrete steps of state are as follows:
Now, each input/output interface that intelligent low-pressure load turns automatically for control device is specially:
1. remote signalling information gathering: the switch deciliter information of inlet wire 1 switch 1DL, inlet wire 2 switch 2DL, bus connection switch ML;
2. telemetry intelligence (TELINT) collection: I section low pressure primary voltage 1U(1Uan, 1Ubn, 1Ucn) and I section busbar voltage IU ' (1Uan ', 1Ubn ', 1Ucn '); II section low pressure primary voltage 2U (2Uan, 2Ubn, 2Ucn) and II section busbar voltage 2U ' (2Uan ', 2Ubn ', 2Ucn '); #1PB low pressure inlet wire current 1CT(1Ia, 1Ib, 1Ic); #2PB low pressure inlet wire current 2CT(2Ia, 2Ib, 2Ic);
3. remote information: inlet wire 1 switch 1DL, inlet wire 2 switch 2DL, bus connection switch ML remote control combined floodgate, remote control separating brake.
Step 2-1: operational mode restores the trigger condition started: decompression side low pressure primary voltage 1U is from no pressure to there being pressure;
Step 2-2: primary processor 1 detects from no pressure to whether having pressure side low tension switch 1DL in a point position, if in co-bit, sends out and does not meet rejuvenating conditions information, interrupt logic;
Step 2-3: if in a point position, closes from the low tension switch 1DL to there being pressure side with no pressure by remote control output unit 8;
Step 2-4: by remote control output unit 8 points of bus connection switch ML, separating brake successful procedure terminates, and separating brake is unsuccessful, sends out low pressure Electromagnetic coupling warning information, interrupt logic.
Although the present invention with preferred embodiment openly as above, it is not that any those skilled in the art without departing from the spirit and scope of the present invention, can make possible variation and amendment for limiting the present invention.Therefore, the scope that protection scope of the present invention should define with the claims in the present invention is as the criterion.
Claims (10)
1. an intelligent low-pressure load turns for control device automatically, it is characterized in that: comprise primary processor, the memory cell be connected with primary processor, DSP processing unit, FPGA unit, On-off signal unit, communication unit and remote control output unit, and the power subsystem of to power for above-mentioned each unit, the input of described DSP processing unit is connected with analog quantity converting unit, voltage, current-mode analog quantity is after analog quantity converting unit digits after conversion signal, send into DSP processing unit to process, each on off state value is input to primary processor by On-off signal unit, primary processor is by each related data in dma mode reading DSP processing unit and result of calculation, pass through each on off state value of I2C interface or serioparallel exchange interface read switch amount input unit simultaneously, then each on off state is controlled by remote control output unit, communicated by communication unit simultaneously, safeguard, control operation.
2. a kind of intelligent low-pressure load as claimed in claim 1 turns automatically for control device, it is characterized in that: described primary processor adopts MCF5272 general purpose microprocessor; Described analog-converted unit adopts model to be the conversion chip of ADS8509IDW.
3. a kind of intelligent low-pressure load as claimed in claim 2 turns for control device automatically, it is characterized in that: described primary processor specifically selects model to be the 32-bit primary processor of MCF5272CVF66.
4. a kind of intelligent low-pressure load as claimed in claim 1 turns automatically for control device, it is characterized in that: described memory cell comprises SRAM, SDRAM and FLASH RAM.
5. a kind of intelligent low-pressure load as claimed in claim 1 turns automatically for control device, it is characterized in that: described DSP processing unit adopts the high integration single-chip digital signal processor ADSP-2185 of AD company.
6. a kind of intelligent low-pressure load as claimed in claim 1 turns automatically for control device, it is characterized in that: described FPGA unit adopts model to be the fpga chip of APA150-TQ100I.
7. a kind of intelligent low-pressure load as claimed in claim 1 turns automatically for control device, it is characterized in that: described communication unit comprises RS232 port, USB service port, Ethernet interface and CAN port.
8. a kind of intelligent low-pressure load as claimed in claim 1 turns confession control device automatically, it is characterized in that: described intelligent low-pressure load automatically turns confession control device and comprises a man-machine interaction unit further, and described man-machine interaction unit adopts touch display screen.
9. a kind of intelligent low-pressure load as claimed in claim 1 turns for control device automatically, it is characterized in that: described power subsystem uses the DC power supply input on floating ground, by the DC/DC transducer of inside, produce+5V ,+15V and-15V altogether and altogether+24V the direct current on ground input as internal logic circuit, analog circuit and " doing " contact input Phototube Coupling current drives power supply, total power consumption is less than 8W.
10. an intelligent low-pressure load turns for control method automatically, it is characterized in that: each input/output interface that intelligent low-pressure load turns automatically for control device is connected with each service entrance switch, bus connection switch, busbar voltage test point, low pressure primary voltage test point, low pressure inlet wire current test point etc. of intelligent low-voltage network 2 circuits respectively, when a wherein inlet wire fault outage, concrete steps are as follows:
Step 1-1: the trigger condition that prepared auto restart starts is formed: I section low pressure primary voltage 1U and I section busbar voltage IU ' or II section low pressure primary voltage 2U and II section busbar voltage 2U ' decompression;
Step 1-2: before intelligent low-pressure load turns confession control device calculating fault outage automatically, whether the load total amount of #1 distribution transforming and #2 distribution transforming exceedes the separate unit total capacity of the side distribution transforming that do not have a power failure, if exceeded, then automatically turned by intelligent low-pressure load and send out warning information for control device man-machine interaction unit, interrupt logic, if be no more than, then perform lower sequence step;
Step 1-3: whether primary processor detects decompression side service entrance switch in a point position, if not in a point position, by remote control output unit remote control separating brake by force, if separating brake is unsuccessful, sends out warning information, interrupt logic;
Step 1-4: whether primary processor detects non-decompression side bus voltage has pressure, if with no pressure, send and does not meet prepared auto restart operation condition, interrupt logic;
Step 1-5: whether primary processor detects bus connection switch in a point position, if co-bit, then sends out and does not meet prepared auto restart operation condition, interrupt logic;
Step 1-6: if bus connection switch is in a point position, after time delay 2 ~ 30 seconds (step-length 0.1 second), close bus connection switch by remote control output unit;
After fault inlet wire restores electricity, before system wiring recovering state to low pressure prepared auto restart action, the control method concrete steps of state are as follows:
Step 2-1: operational mode restores the trigger condition started: decompression side low pressure primary voltage is from no pressure to there being pressure;
Step 2-2: primary processor detects from no pressure to whether having pressure side low tension switch in a point position, if in co-bit, sends out and does not meet rejuvenating conditions information, interrupt logic;
Step 2-3: if in a point position, closes from the low tension switch to there being pressure side with no pressure by remote control output unit;
Step 2-4: divide bus connection switch by remote control output unit, separating brake successful procedure terminates, and separating brake is unsuccessful, sends out low pressure Electromagnetic coupling warning information, interrupt logic.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410602428.3A CN104319890A (en) | 2014-10-31 | 2014-10-31 | Intelligent low-voltage load automatic transfer control device and control method thereof |
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| CN201410602428.3A CN104319890A (en) | 2014-10-31 | 2014-10-31 | Intelligent low-voltage load automatic transfer control device and control method thereof |
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| CN105119366A (en) * | 2015-09-01 | 2015-12-02 | 杨益 | Dual-transformer low-voltage power switch connection switching system and working method thereof |
| CN106787200A (en) * | 2016-12-30 | 2017-05-31 | 国网浙江省电力公司绍兴供电公司 | 30 degree of phase angle difference distribution lines do not have a power failure and turn to close solution loop device for system |
| CN109802486A (en) * | 2019-03-15 | 2019-05-24 | 广东电网有限责任公司 | A kind of power distribution network low pressure quickly turns power supply unit and connection method |
| CN110912253A (en) * | 2019-11-25 | 2020-03-24 | 广东电网有限责任公司 | Low-voltage intelligent spare power automatic switching system |
| CN110932395A (en) * | 2019-11-25 | 2020-03-27 | 广东电网有限责任公司 | Low-voltage intelligent spare power automatic switching communication system |
| CN112332402A (en) * | 2020-09-18 | 2021-02-05 | 北京潞电电气设备有限公司 | Dual-power measurement and control device |
| CN113311269A (en) * | 2021-05-27 | 2021-08-27 | 中国能源建设集团华东电力试验研究院有限公司 | Load transfer detection system based on online power supply mode and detection method thereof |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105119366A (en) * | 2015-09-01 | 2015-12-02 | 杨益 | Dual-transformer low-voltage power switch connection switching system and working method thereof |
| CN106787200A (en) * | 2016-12-30 | 2017-05-31 | 国网浙江省电力公司绍兴供电公司 | 30 degree of phase angle difference distribution lines do not have a power failure and turn to close solution loop device for system |
| CN109802486A (en) * | 2019-03-15 | 2019-05-24 | 广东电网有限责任公司 | A kind of power distribution network low pressure quickly turns power supply unit and connection method |
| CN110912253A (en) * | 2019-11-25 | 2020-03-24 | 广东电网有限责任公司 | Low-voltage intelligent spare power automatic switching system |
| CN110932395A (en) * | 2019-11-25 | 2020-03-27 | 广东电网有限责任公司 | Low-voltage intelligent spare power automatic switching communication system |
| CN110932395B (en) * | 2019-11-25 | 2023-09-15 | 广东电网有限责任公司 | Communication system of low-voltage intelligent spare power automatic switching |
| CN112332402A (en) * | 2020-09-18 | 2021-02-05 | 北京潞电电气设备有限公司 | Dual-power measurement and control device |
| CN113311269A (en) * | 2021-05-27 | 2021-08-27 | 中国能源建设集团华东电力试验研究院有限公司 | Load transfer detection system based on online power supply mode and detection method thereof |
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