CN105305453A - Three-phase low-voltage line voltage-regulating system - Google Patents
Three-phase low-voltage line voltage-regulating system Download PDFInfo
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- CN105305453A CN105305453A CN201510812935.4A CN201510812935A CN105305453A CN 105305453 A CN105305453 A CN 105305453A CN 201510812935 A CN201510812935 A CN 201510812935A CN 105305453 A CN105305453 A CN 105305453A
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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
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
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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
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/70—Smart grids as climate change mitigation technology in the energy generation 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
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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
- Y04S10/22—Flexible AC transmission systems [FACTS] or power factor or reactive power compensating or correcting units
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Abstract
The invention discloses a three-phase low-voltage line voltage-regulating system. The system comprises a three-phase low-voltage line voltage-regulator. The system is characterized in that the three-phase low-voltage line voltage-regulator comprises a molded case circuit breaker, a three-phase voltage-regulating controller, current transformers, AC contactors, a three-phase isolation transformer, AC voltage stabilization modules, a combination switch and a self-healing electric capacitor, wherein the molded case circuit breaker is connected to the current transformers, the current transformers are connected to the three-phase voltage-regulating controller, the AC contactors are connected to the three-phase voltage-regulating controller, the three-phase isolation transformer is connected to the AC contactors, the AC voltage stabilization modules are connected to the three-phase isolation transformer and obtain voltages from the three-phase isolation transformer, the AC contactors are connected to the AC voltage stabilization modules and the AC voltage stabilization modules provide working voltages, the self-healing electric capacitor is connected to the combination switch, and the three-phase voltage-regulating controller will emit instructions to automatically regulate opening and closing of the AC contactors to change the access mode of a three-phase isolation transformer winding so that a secondary side of the three-phase isolation transformer outputs qualified voltages.
Description
Technical field
The present invention relates to a kind of low-pressure adjusting pressing system, particularly relate to a kind of three-phase low-voltage circuit voltage-regulating system.
Background technology
In the distribution of rural area, 0.4kV platform district circuit is in the end of electric power system in middle and low voltage network, and distribution system is chaotic and sharing of load is uneven to platform district layout of roads in early days, makes low-voltage platform area circuit there is low-voltage problem.Secondly, along with economic development, a large amount of rural subscribers have brought into use the induction equipment such as air-conditioning, electromagnetic oven, make reactive loss serious, increase the unsteadiness of rural electricity consumption, cannot meet normal resident living power utility.Therefore, improve terminal temperature difference voltage, guarantee customer power supply voltage is qualified has been administer the Important Problems in the middle and low voltage network of rural area.
There are some low-voltage lifting devices at present, for the upgrading of rural power grids, improved power supply quality, but also still have weak point in actual motion.As patent CN103606927A " a kind of novel single-phase voltage regulating transformation system " comprises A.C. contactor, single-phase self-coupling formula transformer, breaker of plastic casing, voltage stabilizing inversion manager and single-phase voltage regulating controller, single-phase voltage regulating controller comprises main control MCU, data acquisition module, data storage, wireless communication module, GPRS communication module, temperature collect module and A.C. contactor switch drive module, gather circuit voltage analysis by single-phase voltage regulating controller to compare, sending command adapted thereto regulates each channel AC contactor switching to change tap changer gear thus to change the system of single-phase autotransformer secondary side voltage stable output at qualified voltage automatically.It can regulate ratio accordingly according to actual track voltage ambient As, automatically adjusts to input voltage.
The present invention and above-mentioned patent CN103606927A contrast, and main outstanding technical advantage is as follows:
1, the switching control switch that patent CN103606927A adopts is medium-sized A.C. contactor, it is single-pole single-throw(SPST type, when device carries out boost action, there is the phenomenon of momentary power failure, and the present invention adopting the A.C. contactor of specific customization, is SPDT, switching time is Millisecond in short-term, when device carries out boost action, there is not power down phenomenon, backend user reliable power supply can be ensured.
2, the boosting unit that patent CN103606927A adopts is single-phase self-coupling formula transformer, and the boosting unit that the present invention adopts is isolating transformer, and in equal boosting effect situation, employing isolating transformer body design is less, lightweight, cost is lower.
3, the voltage stabilizing inversion manager that patent CN103606927A adopts provides qualified voltage to A.C. contactor, ensure the action message of A.C. contactor, but this voltage stabilizing inversion manager is forward end (breaker of plastic casing) power taking.And the AC voltage regulator modules that the present invention adopts also is provide qualified voltage to A.C. contactor, ensure the action message of A.C. contactor, not only cost is low, this AC voltage regulator modules (isolating transformer) power taking to the back-end technically simultaneously, the rear end dead electricity when isolating transformer fault, AC voltage regulator modules also can dead electricity accordingly, and A.C. contactor can skip to bypass shelves because of dead electricity, thus ensure backend user normal electricity consumption, elevator system reliability.
4, patent CN103606927A does not possess no-power compensation function, therefore the low-voltage problem that circuit causes greatly because of reactive demand cannot be solved, and the present invention can according to the demand of actual application environment, the building-out capacitor of configuration different capabilities, reactive power compensation can be carried out to circuit, booster tension, reduces line loss.
Therefore a kind of three-phase low-voltage circuit of development and Design voltage-regulating system, is solve the problem comparatively reasonably to select.
Summary of the invention
The object of the invention is to, for the problem of above-mentioned discovery, provide a kind of three-phase low-voltage circuit voltage-regulating system and pressure regulation method thereof.It effectively can either solve the long end low-voltage problem caused of Yin Tai district radius of electricity supply, also can solve the voltage fluctuation problem because peak valley phase and seasonal electricity consumption cause.Simultaneously also can according to applied environment demand, the building-out capacitor of configuration different capabilities, carries out reactive power compensation to circuit, both promoted terminal voltage, meet residential electricity consumption, can reduce line loss again, reach the effect of platform district circuit saving energy and decreasing loss.
Object of the present invention is achieved in that described a kind of three-phase low-voltage circuit voltage-regulating system, comprises the A phase on three-phase low-voltage circuit voltage regulator and three-phase line, B phase, C phase, N line, its feature is that described three-phase low-voltage circuit voltage regulator comprises breaker of plastic casing, three phase voltage regulating controller, current transformer, A.C. contactor, three-phase isolation transformer, AC voltage regulator modules, combination switch, Self-healing power capacitor, the A phase on three-phase line, B phase, C phase, N line is linked into three phase voltage regulating controller respectively, breaker of plastic casing and combination switch, breaker of plastic casing is connected with current transformer, and current transformer is connected with three phase voltage regulating controller, and A.C. contactor is connected with three phase voltage regulating controller, three-phase isolation transformer is connected with A.C. contactor, and three-phase isolation transformer and the A phase on three-phase line, B phase, C phase, N line connects, and AC voltage regulator modules is connected with three-phase isolation transformer and obtains voltage from three-phase isolation transformer, and A.C. contactor is connected with AC voltage regulator modules and provides operating voltage by AC voltage regulator modules, and Self-healing power capacitor is connected with combination switch, described three phase voltage regulating controller comprises main control MCU, three-phase alternating voltage current acquisition module, data store query module, wireless communication module, operating voltage, man-machine interface, fling-cut switch control module, described three-phase alternating voltage current acquisition module, data store query module, wireless communication module, operating voltage, man-machine interface, fling-cut switch control module are connected with main control MCU respectively, A phase on three-phase line, B phase, C phase, after the three-phase alternating voltage current acquisition module of N line access three phase voltage regulating controller, three-phase alternating voltage current acquisition module acquires three-phase alternating voltage current signal, the electric energy computation chip of three-phase alternating voltage current acquisition module is sent into after signal processing circuit conditioning, main control MCU by SPI communication bus control electric energy computation chip to nursed one's health into by signal processing circuit electric energy computation chip can signal do accurate analog digital translation and calculating, obtain platform district three-phase line reactive demand and low voltage or higher information, platform district three-phase line reactive demand and low voltage or the timing of higher information is sent to main control MCU again by SPI communication bus, when circuit reactive demand is large, main control MCU sends command adapted thereto, the break-make of automatic control combination switch, realize the switching to Self-healing power capacitor, improve power factor, reduce line loss, improve line voltage distribution, when dropping into Self-healing power capacitor, continuation is gathered three-phase line voltage by three phase voltage regulating controller, higher or the on the low side information of accurate Calculation current three-phase line voltage is carried out by the main control MCU of three phase voltage regulating controller, after carrying out com-parison and analysis with voltage parameter threshold value, form corresponding logic control signal and send control command and automatically regulate the switching of A.C. contactor to change the access way of three-phase isolation transformer winding thus to change three-phase isolation transformer secondary side and export qualified voltage, when circuit reactive demand is normal, Self-healing power capacitor need not be dropped into, if when now Monitoring Line is low-voltage, three phase voltage regulating controller regulates the switching of A.C. contactor to change the access way of three-phase isolation transformer winding thus to change three-phase isolation transformer secondary side output qualified voltage by sending instruction automatically.
Described A.C. contactor adopts SPDT, its in short-term switching time be Millisecond.
The pressure regulation method of a kind of three-phase low-voltage circuit voltage-regulating system of the present invention, comprise the steps: to receive A phase when three phase voltage regulating controller, B phase, C phase, after on N line, by the three-phase alternating voltage current acquisition module acquires three-phase alternating voltage current signal of three phase voltage regulating controller, the three-phase alternating voltage current signal gathered sends into the electric energy computation chip of three-phase alternating voltage current acquisition module after signal processing circuit conditioning, main control MCU by SPI communication bus control electric energy computation chip to nursed one's health into by signal processing circuit electric energy computation chip can signal do accurate analog digital translation and calculating, obtain platform district three-phase line reactive demand and low voltage or higher information, platform district three-phase line reactive demand and low voltage or the timing of higher information is sent to main control MCU again by SPI communication bus, when circuit reactive demand is large, main control MCU sends command adapted thereto by three phase voltage regulating controller, fling-cut switch control module is driven automatically to control the break-make of combination switch, realize the switching to Self-healing power capacitor, improve power factor, reduce line loss, improve line voltage distribution, when dropping into Self-healing power capacitor, continuation is gathered three-phase line voltage by three phase voltage regulating controller, higher or the on the low side information of accurate Calculation current three-phase line voltage is carried out by the main control MCU of three phase voltage regulating controller, after carrying out com-parison and analysis with voltage parameter threshold value, form corresponding logic control signal and send control command and automatically regulate the switching of A.C. contactor to change the access way of three-phase isolation transformer winding thus to change three-phase isolation transformer secondary side and export qualified voltage, when circuit reactive demand is normal, Self-healing power capacitor need not be dropped into, if when now Monitoring Line is low-voltage, three phase voltage regulating controller regulates the switching of A.C. contactor to change the access way of three-phase isolation transformer winding thus to change three-phase isolation transformer secondary side output qualified voltage by sending instruction automatically, realizes adjustment voltage.
Specifically, a kind of three-phase low-voltage circuit voltage-regulating system of the present invention, achieves automatic tracking, monitoring platform district three-phase line voltage, current information, and reasonable analysis calculates reactive demand, the information of voltage of current line.1) when circuit reactive demand is large, send command adapted thereto by three phase voltage regulating controller, automatically control combination switch action, realize the input of capacitor, improve power factor, improve line voltage distribution.When dropping into capacitor, continuation is gathered line voltage distribution by three phase voltage regulating controller, carry out com-parison and analysis according to voltage parameter threshold value, send command adapted thereto and automatically regulate each channel AC contactor switching, the coil access changing three-phase isolation transformer realizes promoting line voltage distribution; 2) when circuit reactive demand is normal, capacitor need not be dropped into, if when now Monitoring Line is low-voltage, three phase voltage regulating controller also will send instruction and automatically regulate each channel AC contactor switching, and the coil access changing three-phase isolation transformer realizes promoting line voltage distribution.
Object of the present invention is achieved in that described a kind of three-phase low-voltage circuit voltage-regulating system, and what comprise three-phase low-voltage circuit voltage regulator, intelligent palm terminal and background analysis main website formation contains the integral systems such as data monitoring, optimum configurations, state control.Background analysis main website is by GPRS module, realize real-time communication and the information interaction of background analysis main website and three-phase low-voltage circuit voltage regulator, the running status of monitoring three-phase low-voltage circuit voltage regulator, and carry out Analysis of Policy Making in conjunction with historical data, program remote upgrading etc.Intelligence palm terminal can realize closely to the information reliable interaction of three-phase low-voltage circuit voltage regulator, and various state debugging when can facilitate in-site installation.
Object of the present invention also can be achieved like this, described a kind of three-phase low-voltage circuit voltage-regulating system, comprise three-phase low-voltage circuit voltage regulator, its design feature is: described three-phase low-voltage circuit voltage regulator comprises breaker of plastic casing, three phase voltage regulating controller, current transformer, A.C. contactor, three-phase isolation transformer, AC voltage regulator modules, combination switch, Self-healing power capacitor.
Described breaker of plastic casing is the normal break-make that can ensure equipment, has the functions such as short-circuit protection, and protection circuit and device are not damaged; Described three phase voltage regulating controller is that the voltage gathering three-phase line carries out com-parison and analysis, sends the normal switching of instruction control A.C. contactor and carries out pressure regulation action, can realize the pressure regulation of three-phase independence, also can realize three-phase synchronous pressure regulation; Described current transformer is used to gather three-phase line current information, and the electric current of collection is for calculating the reactive demand of three-phase line; Described A.C. contactor output is connected to the joint of drawing in three-phase isolation transformer winding by copper conductor after, gather line input voltage by three phase voltage regulating controller and carry out com-parison and analysis, control A.C. contactor switching, make to change the tap connecting three-phase isolation transformer winding, increase effective turn, namely increase bucking voltage, thus realize the object of pressure regulation; Described AC voltage regulator modules is mainly made up of associated hardware circuitry design, exports the qualified voltage that can meet A.C. contactor action message, is supplied in A.C. contactor and uses, ensure the reliability service of A.C. contactor.Described AC voltage regulator modules is by three-phase isolation transformer power taking, when three-phase isolation transformer breaks down power down, the corresponding power down of AC voltage regulator modules, now three phase voltage regulating controller sends control command, A.C. contactor is switched to bypass condition, guarantees backend user reliable power supply; The method that described combination switch is cut off by voltage zero-cross conducting and current over-zero, control input and the excision of Self-healing power capacitor, compensated line is idle, improves line power factor, reduces the wastage.Described Self-healing power capacitor is for compensated line reactive demand, improves power factor, reduces line loss.
The main outstanding technical advantage that the present invention and patented technology CN103606927A carry out contrasting is as follows:
1, the switching control switch that patent CN103606927A adopts is medium-sized A.C. contactor, it is single-pole single-throw(SPST type, when device carries out boost action, there is the phenomenon of momentary power failure, and the present invention adopting the A.C. contactor of specific customization, is SPDT, switching time is Millisecond in short-term, when device carries out boost action, there is not power down phenomenon, backend user reliable power supply can be ensured.
2, the boosting unit that patent CN103606927A adopts is single-phase self-coupling formula transformer, and the boosting unit that the present invention adopts is isolating transformer, and in equal boosting effect situation, employing isolating transformer body design is less, lightweight, cost is lower.
3, the voltage stabilizing inversion manager that patent CN103606927A adopts provides qualified voltage to A.C. contactor, ensure the action message of A.C. contactor, but this voltage stabilizing inversion manager is forward end (breaker of plastic casing) power taking.And the AC voltage regulator modules that the present invention adopts also is provide qualified voltage to A.C. contactor, ensure the action message of A.C. contactor, not only cost is low, this AC voltage regulator modules (isolating transformer) power taking to the back-end technically simultaneously, the rear end dead electricity when isolating transformer fault, AC voltage regulator modules also can dead electricity accordingly, and A.C. contactor can skip to bypass shelves because of dead electricity, thus ensure backend user normal electricity consumption, elevator system reliability.
4, patent CN103606927A does not possess no-power compensation function, therefore the low-voltage problem that circuit causes greatly because of reactive demand cannot be solved, and the present invention can according to the demand of actual application environment, the building-out capacitor of configuration different capabilities, reactive power compensation can be carried out to circuit, booster tension, reduces line loss.
Accompanying drawing explanation
Fig. 1 is the structure chart of the three-phase low-voltage circuit voltage regulator of the embodiment of the present invention.
Fig. 2 is the structure chart of the three phase voltage regulating controller of the three-phase low-voltage circuit voltage regulator of the embodiment of the present invention.
Fig. 3 is the operation principle block diagram of the three-phase low-voltage circuit voltage regulator of the embodiment of the present invention.
Fig. 4 is the system construction drawing of embodiment of the present invention combined with intelligent palm terminal.
Fig. 5 is the system construction drawing of the embodiment of the present invention in conjunction with background analysis main website.
Fig. 6 is the system construction drawing of embodiment of the present invention combined with intelligent palm terminal and background analysis main website.
Embodiment
Below in conjunction with drawings and Examples, the operation principle of a kind of three-phase low-voltage circuit voltage-regulating system of the present invention and the course of work are described in detail:
A kind of three-phase low-voltage circuit voltage-regulating system of the present invention comprises three-phase low-voltage circuit voltage regulator, is the structure chart of the three-phase low-voltage circuit voltage regulator of embodiment of the present invention as shown in Figure 1.In figure: breaker of plastic casing 1, three phase voltage regulating controller 2, combination switch 3, Self-healing power capacitor 4, current transformer 5(3), AC voltage regulator modules 6(3) and, A.C. contactor 7(4), three-phase isolation transformer 8.Copper conductor is all adopted to connect between the inner all components and parts of device, wherein three phase voltage regulating controller 2 is that prior art also can for adopting below the present invention proprietary technology as described in Figure 2, A phase on three-phase line, B phase, C phase, N line is linked into three phase voltage regulating controller 2 respectively, breaker of plastic casing 1 and combination switch 3, breaker of plastic casing 1 is connected with current transformer 5, current transformer 5 is connected with three phase voltage regulating controller 2, A.C. contactor 7 is connected with three phase voltage regulating controller 2, three-phase isolation transformer 8 is connected with A.C. contactor 7, and three-phase isolation transformer 8 and the A on three-phase line, B, C, N connects, AC voltage regulator modules 6 is connected with three-phase isolation transformer 8 and obtains voltage from three-phase isolation transformer 8, A.C. contactor 7 is connected with AC voltage regulator modules 6 and provides operating voltage by AC voltage regulator modules 6, Self-healing power capacitor 4 is connected with combination switch 3.Three phase voltage regulating controller 2 is the technology that general existing technical staff can realize, it has following function: can the secondary side current information of voltage on motion tracking picking platform district three-phase line and current transformer 2, reasonable analysis calculates reactive demand and the change in voltage situation of current line, when circuit reactive demand is large, command adapted thereto is sent by three phase voltage regulating controller 2, the action of automatic control combination switch 3, realize the input of Self-healing power capacitor 4, improve line power factor, improve line voltage distribution, the present invention possesses no-power compensation function.When dropping into Self-healing power capacitor 4, continuation is gathered three-phase line voltage by three phase voltage regulating controller 2, com-parison and analysis is carried out according to voltage parameter threshold value, send command adapted thereto and automatically regulate each channel AC contactor 7 switching, the effective turn changing three-phase isolation transformer 8 coil realizes promoting line voltage distribution.When circuit reactive demand is normal, Self-healing power capacitor 4 need not be dropped into, if when now Monitoring Line is low-voltage, three phase voltage regulating controller 2 also will send instruction and automatically regulate each channel AC contactor 7 switching, the effective turn changing three-phase isolation transformer 8 coil realizes promoting line voltage distribution, described A.C. contactor is SPDT, its in short-term switching time be Millisecond.AC voltage regulator modules 6 is mainly made up of associated hardware circuitry design, for the technology that those skilled in the art can realize, this AC voltage regulator modules can adopt existing paster integrated chip HT7150, TLC555IDR and toroidal transformer, two conventional triodes, conventional resistor-capacitor units etc. manufacture, output can meet the qualified voltage of A.C. contactor 7 action message, be supplied in A.C. contactor 7 to use, ensure the reliability service of A.C. contactor, the AC voltage regulator modules that the present invention adopts also is provide qualified voltage to A.C. contactor, ensure the action message of A.C. contactor, not only cost is low, this AC voltage regulator modules (isolating transformer 8) power taking to the back-end technically simultaneously, the rear end dead electricity when isolating transformer fault, AC voltage regulator modules also can dead electricity accordingly, A.C. contactor can skip to bypass shelves because of dead electricity, thus ensure backend user normal electricity consumption, elevator system reliability.
As shown in Figure 2, the structure chart of the three phase voltage regulating controller of embodiment of the present invention, comprise main control MCU, three-phase alternating voltage current acquisition module, data store query module, wireless communication module, operating voltage, man-machine interface, fling-cut switch control module, described three-phase alternating voltage current acquisition module, data store query module, wireless communication module, operating voltage, man-machine interface, fling-cut switch control module are connected with main control MCU respectively, above-mentioned concrete each component models and function as follows:
1) main control MCU: adopt existing commercially available prod, complete transmission and control and send control signal to drive fling-cut switch control module to carry out controlling the switching of Self-healing power capacitor and the gear switch of three-phase isolation transformer, these calibration analytes and calculation procedure are that those skilled in the art can realize, or the calibration analyte of this main control MCU and calculation procedure can with reference to and use for reference existing public technology, the technical characteristic as described in the utility model patent " a kind of novel single-phase voltage regulating transformation system " of the patent No. 201320778872.1.
2) three-phase alternating voltage current acquisition module: it comprises electric energy computation chip and signal processing circuit, electric energy computation chip adopts high-precision AD chip, high-precision AD chip uses as electric current and voltage metering, the effect of signal processing circuit is that the electric current and voltage information of input is nursed one's health into the signal that can do accurate analog digital translation and calculating in high-precision AD chip, send result timing to main control MCU again, this part have employed the high-precision AD chip of specialty.High-precision AD chip and signal processing circuit are prior art.
3) data store query module: this module to various in real time and history data store and inquire about, can adopt all kinds of storage medium, be prior art.
4) wireless communication module: this wireless communication module is that 433Mhz wireless telecommunications and GPRS wireless telecommunications combine.Data docking is carried out mutual by 433Mhz wireless telecommunications and intelligent palm terminal.Real time data is carried out mutual by GPRS communication and backstage main website.Thus realizing the functions such as long-range or local remote control, remote regulating, remote measurement, this 433Mhz wireless communication module and GPRS communication module are prior art.
5) operating voltage: provided by the power module of routine, be specially: alternating current 220V inputs as power supply, converts multi-channel DC voltage to for each circuit module through power module.Wherein main control MCU, wireless communication module, man-machine interface etc. adopt 3.3V, and three-phase alternating voltage current acquisition module work voltage is 5V, and fling-cut switch control module operating voltage is 12V.
6) man-machine interface: adopt the module commonly used of this area and technological maheup, be the technology that those skilled in the art can realize, this module is that user carries out the uses such as optimum configurations, state control, data query.
7) fling-cut switch control module: this module is general switching circuit, when main control MCU sends control signal instruction, power supply provides the voltage supply switching circuit of 12V to use, and switching circuit is closed, and these switching circuits are that those skilled in the art can realize.
As shown in Figure 3, the specific works theory diagram of a kind of three-phase low-voltage circuit voltage-regulating system of the embodiment of the present invention, three-phase low-voltage circuit voltage regulator wherein comprises breaker of plastic casing, three phase voltage regulating controller, current transformer, A.C. contactor, three-phase isolation transformer, AC voltage regulator modules, combination switch, Self-healing power capacitor, the A phase on three-phase line, B phase, C phase, N line is linked into three phase voltage regulating controller 2 respectively, breaker of plastic casing 1 and combination switch 3, breaker of plastic casing 1 is connected with current transformer 5, current transformer 5 is connected with three phase voltage regulating controller 2, A.C. contactor 7 is connected with three phase voltage regulating controller 2, three-phase isolation transformer 8 is connected with A.C. contactor 7, and three-phase isolation transformer 8 and the A on three-phase line, B, C, N connects, AC voltage regulator modules 6 is connected with three-phase isolation transformer 8 and obtains voltage from three-phase isolation transformer 8, A.C. contactor 7 is connected with AC voltage regulator modules 6 and provides operating voltage by AC voltage regulator modules 6, and Self-healing power capacitor 4 is connected with combination switch 3.Three phase voltage regulating controller wherein comprises main control MCU, three-phase alternating voltage current acquisition module, data store query module, wireless communication module, operating voltage, man-machine interface, fling-cut switch control module, described three-phase alternating voltage current acquisition module, data store query module, wireless communication module, operating voltage, man-machine interface, fling-cut switch control module are connected with main control MCU respectively.A on platform district three-phase line, B, C, after N accesses the three-phase alternating voltage current acquisition module of three phase voltage regulating controller, by sending into the electric energy computation chip of three-phase alternating voltage current acquisition module after the signal processing circuit conditioning of three-phase alternating voltage current acquisition module, main control MCU by SPI communication bus control electric energy computation chip (high-precision AD chip) to the signal processing circuit by data acquisition module nurse one's health into electric energy computation chip can signal do accurate analog digital translation and calculating, to obtain platform district three-phase line reactive demand and low voltage or the information such as higher, platform district three-phase line reactive demand and low voltage or the information timing such as higher is sent to main control MCU again by SPI communication bus, main control MCU is again through adjustment algorithm, reasonable analysis also sends control strategy.When circuit reactive demand is large, send command adapted thereto by three phase voltage regulating controller, automatically control the break-make of combination switch, realize the switching to Self-healing power capacitor, improve power factor, reduce line loss, improve line voltage distribution.When dropping into Self-healing power capacitor, continuation is gathered three-phase line voltage by three phase voltage regulating controller, by the information such as three phase voltage regulating controller voltage comparator circuit accurate Calculation current three-phase line voltage is higher or on the low side, after carrying out com-parison and analysis with voltage parameter threshold value, form corresponding logic control signal and send control command and automatically regulate the switching of A.C. contactor to change the access way of three-phase isolation transformer winding thus to change three-phase isolation transformer secondary side and export qualified voltage; When circuit reactive demand is normal, Self-healing power capacitor need not be dropped into, if when now Monitoring Line is low-voltage, three phase voltage regulating controller regulates the switching of A.C. contactor to change the access way of three-phase isolation transformer winding thus to change three-phase isolation transformer secondary side and export qualified voltage and form corresponding logic control signal and send control command and automatically regulate the switching of A.C. contactor to export qualified voltage to change tap changer gear thus to change three-phase isolation transformer secondary side by sending instruction automatically; When circuit reactive demand is normal, capacitor need not be dropped into, if when now Monitoring Line is low-voltage, three phase voltage regulating controller also regulates the switching of A.C. contactor to export qualified voltage to change tap changer gear thus to change three-phase isolation transformer secondary side by sending instruction automatically, reaches the object of adjustment voltage.Wherein qualified voltage is between 198V ~ 235V.Described change three-phase isolation transformer winding access way whether changes the access of compensative winding Same Name of Ends by A.C. contactor, when Same Name of Ends is connected, namely produces boosting effect, when Same Name of Ends disconnects, namely enter bypass condition.(reference GB/T12325-2008 quality of power supply supply power voltage deviation clause 4.3220V single phase power supply voltage deviation is+7% ,-10% of nominal voltage.198V ~ 235V is the qualified voltage scope of single phase power supply.Namely, when line voltage distribution is lower than 198V, line voltage distribution is regarded as on the low side; When line voltage distribution is higher than 235V, then assert that line voltage distribution is higher).
As shown in Figure 4, the present invention adopts three-phase low-voltage circuit voltage regulator and intelligent being integrally formed of palm terminal system; Described intelligent palm terminal is general prior art, and intelligent palm terminal carries out information interaction by 433MHz wireless communication module and three phase voltage regulating controller; Intelligence palm terminal can person easy to use to device carry out optimum configurations, various in real time and the collection of history data and state control.When the three phase voltage regulating controller in a kind of three-phase low-voltage circuit voltage-regulating system of the present invention adopts the technology of Fig. 2, its three phase voltage regulating controller comprises main control MCU, data acquisition module, temperature collect module, data storage, wireless communication module, GPRS communication module and A.C. contactor driver module, described data acquisition module, temperature collect module, data storage, wireless communication module, GPRS communication module is connected with main control MCU respectively with A.C. contactor driver module, described intelligent palm terminal carries out information interaction by the wireless communication module in 433MHz wireless communication module and controller, complete transmission by main control MCU and control, for the technology that those skilled in the art can realize.
As shown in Figure 5, the present invention adopts three-phase low-voltage circuit voltage regulator and background analysis main website being integrally formed system.Described background analysis main website is general prior art, and background analysis main website carries out wireless docking by GPRS communication module with the three phase voltage regulating controller of device; Background analysis main website can person easy to use to device carry out optimum configurations, various in real time and the collection of history data and state control.When the three phase voltage regulating controller in a kind of three-phase low-voltage circuit voltage-regulating system of the present invention adopts the technology of Fig. 2, its three phase voltage regulating controller comprises main control MCU, data acquisition module, temperature collect module, data storage, wireless communication module, GPRS communication module and A.C. contactor driver module, described data acquisition module, temperature collect module, data storage, wireless communication module, GPRS communication module is connected with main control MCU respectively with A.C. contactor driver module, described background analysis main website carries out wireless docking by GPRS communication module with the GPRS communication module in three phase voltage regulating controller, complete transmission by main control MCU and control, for the technology that those skilled in the art can realize.
As shown in Figure 6, the present invention adopts three-phase low-voltage circuit voltage regulator, intelligent palm terminal and background analysis main website being integrally formed system.Intelligence palm terminal can carry out information interaction by 433MHz wireless communication module and three-phase low-voltage circuit voltage regulator, intelligence palm terminal can also dock with background analysis main website, and background analysis main website also carries out wireless docking by GPRS communication module with the three phase voltage regulating controller of device; Intelligence palm terminal and background analysis main website can simultaneously to device carry out optimum configurations, various in real time and the collection of history data and state control.Background analysis main website also can carry out parameter configuration and setting to intelligent palm terminal simultaneously.When three phase voltage regulating controller in a kind of three-phase low-voltage circuit voltage-regulating system of the present invention adopts the technology of Fig. 2, its three phase voltage regulating controller comprises main control MCU, data acquisition module, temperature collect module, data storage, wireless communication module, GPRS communication module and A.C. contactor driver module, described data acquisition module, temperature collect module, data storage, wireless communication module, GPRS communication module is connected with main control MCU respectively with A.C. contactor driver module, described intelligent palm terminal is connected with the main control MCU of controller with background analysis main website, intelligence palm terminal carries out wireless docking by 433MHz wireless communication module with the wireless communication module in controller, background analysis main website by GPRS communication module with carry out wireless docking without GPRS communication module in controller, intelligence palm terminal can also dock with background analysis main website, complete transmission by main control MCU and control, for the technology that those skilled in the art can realize.
Claims (3)
1. a three-phase low-voltage circuit voltage-regulating system, comprises the A phase on three-phase low-voltage circuit voltage regulator and three-phase line, B phase, C phase, N line, is characterized in that: described three-phase low-voltage circuit voltage regulator comprises breaker of plastic casing, three phase voltage regulating controller, current transformer, A.C. contactor, three-phase isolation transformer, AC voltage regulator modules, combination switch, Self-healing power capacitor, the A phase on three-phase line, B phase, C phase, N line is linked into three phase voltage regulating controller respectively, breaker of plastic casing and combination switch, breaker of plastic casing is connected with current transformer, and current transformer is connected with three phase voltage regulating controller, and A.C. contactor is connected with three phase voltage regulating controller, three-phase isolation transformer is connected with A.C. contactor, and three-phase isolation transformer and the A phase on three-phase line, B phase, C phase, N line connects, and AC voltage regulator modules is connected with three-phase isolation transformer and obtains voltage from three-phase isolation transformer, and A.C. contactor is connected with AC voltage regulator modules and provides operating voltage by AC voltage regulator modules, and Self-healing power capacitor is connected with combination switch, described three phase voltage regulating controller comprises main control MCU, three-phase alternating voltage current acquisition module, data store query module, wireless communication module, operating voltage, man-machine interface, fling-cut switch control module, and described three-phase alternating voltage current acquisition module, data store query module, wireless communication module, operating voltage, man-machine interface, fling-cut switch control module are connected with main control MCU respectively, A phase on three-phase line, B phase, C phase, after the three-phase alternating voltage current acquisition module of N line access three phase voltage regulating controller, three-phase alternating voltage current acquisition module acquires three-phase alternating voltage current signal, the electric energy computation chip of three-phase alternating voltage current acquisition module is sent into after signal processing circuit conditioning, main control MCU by SPI communication bus control electric energy computation chip to nursed one's health into by signal processing circuit electric energy computation chip can signal do accurate analog digital translation and calculating, obtain platform district three-phase line reactive demand and low voltage or higher information, platform district three-phase line reactive demand and low voltage or the timing of higher information is sent to main control MCU again by SPI communication bus, when circuit reactive demand is large, main control MCU sends command adapted thereto, the break-make of automatic control combination switch, realize the switching to Self-healing power capacitor, improve power factor, reduce line loss, improve line voltage distribution, when dropping into Self-healing power capacitor, continuation is gathered three-phase line voltage by three phase voltage regulating controller, higher or the on the low side information of accurate Calculation current three-phase line voltage is carried out by the main control MCU of three phase voltage regulating controller, after carrying out com-parison and analysis with voltage parameter threshold value, form corresponding logic control signal and send control command and automatically regulate the switching of A.C. contactor to change the access way of three-phase isolation transformer winding thus to change three-phase isolation transformer secondary side and export qualified voltage, when circuit reactive demand is normal, Self-healing power capacitor need not be dropped into, if when now Monitoring Line is low-voltage, three phase voltage regulating controller regulates the switching of A.C. contactor to change the access way of three-phase isolation transformer winding thus to change three-phase isolation transformer secondary side output qualified voltage by sending instruction automatically.
2. a kind of three-phase low-voltage circuit voltage-regulating system according to claim 1, is characterized in that: described A.C. contactor to adopt SPDT, its in short-term switching time be Millisecond.
3. the pressure regulation method of a three-phase low-voltage circuit voltage-regulating system, it is characterized in that: when A phase received by three phase voltage regulating controller, B phase, C phase, after on N line, by the three-phase alternating voltage current acquisition module acquires three-phase alternating voltage current signal of three phase voltage regulating controller, the three-phase alternating voltage current signal gathered sends into the electric energy computation chip of three-phase alternating voltage current acquisition module after signal processing circuit conditioning, main control MCU by SPI communication bus control electric energy computation chip to nursed one's health into by signal processing circuit electric energy computation chip can signal do accurate analog digital translation and calculating, obtain platform district three-phase line reactive demand and low voltage or higher information, platform district three-phase line reactive demand and low voltage or the timing of higher information is sent to main control MCU again by SPI communication bus, when circuit reactive demand is large, main control MCU sends command adapted thereto by three phase voltage regulating controller, fling-cut switch control module is driven automatically to control the break-make of combination switch, realize the switching to Self-healing power capacitor, improve power factor, reduce line loss, improve line voltage distribution, when dropping into Self-healing power capacitor, continuation is gathered three-phase line voltage by three phase voltage regulating controller, higher or the on the low side information of accurate Calculation current three-phase line voltage is carried out by the main control MCU of three phase voltage regulating controller, after carrying out com-parison and analysis with voltage parameter threshold value, form corresponding logic control signal and send control command and automatically regulate the switching of A.C. contactor to change the access way of three-phase isolation transformer winding thus to change three-phase isolation transformer secondary side and export qualified voltage, when circuit reactive demand is normal, Self-healing power capacitor need not be dropped into, if when now Monitoring Line is low-voltage, three phase voltage regulating controller regulates the switching of A.C. contactor to change the access way of three-phase isolation transformer winding thus to change three-phase isolation transformer secondary side output qualified voltage by sending instruction automatically, realizes adjustment voltage.
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| CN107727898A (en) * | 2017-11-15 | 2018-02-23 | 乾友科技有限公司 | A kind of stimulus output circuit |
| CN108258691A (en) * | 2018-01-18 | 2018-07-06 | 浙江日业电力科技有限公司 | Low-voltage distribution manages system |
| CN108306293A (en) * | 2018-01-18 | 2018-07-20 | 浙江日业电力科技有限公司 | Low-voltage electric energy quality controlling device |
| CN108471117A (en) * | 2018-04-13 | 2018-08-31 | 哈尔滨兴亚技术有限公司 | A kind of device improving electricity system efficiency |
| CN108767868A (en) * | 2018-06-14 | 2018-11-06 | 重庆明斯克电力建设工程有限责任公司 | Low-voltage circuit on-load voltage regulation compensation device |
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