CN103872980B - A kind of method of the real-time monitoring collector-shoe gear based on preposition allotment - Google Patents
A kind of method of the real-time monitoring collector-shoe gear based on preposition allotment Download PDFInfo
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- CN103872980B CN103872980B CN201210527517.7A CN201210527517A CN103872980B CN 103872980 B CN103872980 B CN 103872980B CN 201210527517 A CN201210527517 A CN 201210527517A CN 103872980 B CN103872980 B CN 103872980B
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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
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
Abstract
The invention belongs to new forms of energy technical field of electric power, be specifically related to a kind of structure and method of the real-time monitoring collector-shoe gear based on preposition allotment, comprise: new forms of energy direct current power photovoltaic array P1 incoming end, P2 incoming end, Pn incoming end, direct current input power line and electric-controlled switch circuit K1 and K2 and Kn, observation circuit T1 and Tm, L1 protective circuit, Lm protective circuit, conflux power bus-bar L1 and Lm (6m), control module (5), L1 lightning protection circuit, Lm lightning protection circuit, L1 DC output end, Lm DC output end, lightning protection end (9), communication interface (10), system bus (11), DC output power line L1 and Lm, by regulate in real time the grouping of direct current power incoming end and and the Path Connection connecing bus rod realizes corresponding control, the electric power of DC output end is made to meet the input requirements of corresponding inversion subsystem electric power, can real-time monitoring and every raw local damage and fault generator unit, add fault-tolerant ability, improve the reliability of system.
Description
Technical field
The invention belongs to new forms of energy technical field of electric power, be specifically related to a kind of method of the real-time monitoring collector-shoe gear based on preposition allotment.
Background technology
New forms of energy electric power particularly photovoltaic generation and wind power generation electric power system when integrated, no matter total capacity requirement all exports as systematic electricity and designs by load You Ji road electricity needs usually, Wind turbines and photovoltaic array are the demand meeting supporting inverter and system nominal power, photovoltaic module or Wind turbines are carried out connection in series-parallel combination, and by header box, the multichannel electrical component line of force is confluxed into a road output power line through collector-shoe gear, the electric power realizing converging many group smaller power generator units becomes larger rated power electric power, and access inverter or multiple header box accesses inverter by DC cabinet, be alternating current by new forms of energy direct current electrical variable current, header box device mainly confluxes, also there is certain defencive function simultaneously.
The power line of multi-channel DC electric power input path is confluxed into single direct current power outgoing route power line by prior art and header box product, and be relatively-stationary in systems in which, the input and output of its direct current power are unadjustable in system with installation and operation process.When the generator unit of system and material generation local damage and fault, real-time monitoring and isolation can not there is local damage and fault generator unit, reduce the reliability of system; And inverter is in power conversion process, and different brands inverter its conversion efficiency when electric power is different is different, particularly, in the light condition of underload, when generated output is less than 50% rated power, its efficiency will be not enough to 60%, and system effectiveness reduces greatly.
For photovoltaic generation electric power system, photovoltaic module energy output in actual applications changes with the change of illumination power, and when light is weak, energy output is less, and during light intensity, energy output is larger, usually, when system, be designed to assembly maximum generation ability the electric power supplying inverter rated power; And Power Electronic Circuit to form convertor circuit and inverter power consumption be in systems in which substantially constant, so make system effectiveness greatly reduce in the low light level few period that generates electricity; Particularly in the light condition of underload, convertor circuit due to system is corresponding rated power according to system power supply power configuration, during system cloud gray model, Power Electronic Circuit formation convertor circuit and inverter reduce greatly at its inversion efficiency of light condition of underload, and the utilance that systems generate electricity is powered reduces.Therefore have some systems particularly off-grid system set the starting power of systems generate electricity, when generator unit energy output reaches certain value or pass through storage battery power supply, whole system is powered operation (at least generate electricity > consumable), this burden will lost certain energy output or add storage battery, also just adds cost and the system investments of generating power supply.
Summary of the invention
For solution prior art and header box device exist above-mentioned problem and defect, the present invention proposes a kind of method of the real-time monitoring collector-shoe gear based on preposition allotment, this real-time monitoring collector-shoe gear comprises: new forms of energy direct current power photovoltaic array P1 incoming end, new forms of energy electric power photovoltaic array P2 incoming end, new forms of energy electric power photovoltaic array Pn incoming end, direct current input power line and electric-controlled switch circuit K1, direct current input power line and electric-controlled switch circuit K2, direct current input power line and electric-controlled switch circuit Kn, observation circuit T1, observation circuit Tm, L1 protective circuit, Lm protective circuit, conflux power bus-bar L1, conflux power bus-bar Lm, control module, L1 lightning protection circuit, Lm lightning protection circuit, L1 DC output end, Lm DC output end, lightning protection end, communication interface, system bus, DC output power line L1, DC output power line Lm,
New forms of energy direct current power photovoltaic array P1 incoming end, new forms of energy direct current power photovoltaic array P2 incoming end, new forms of energy direct current power photovoltaic array Pn incoming end is respectively by direct current input power line and electric-controlled switch circuit K1, direct current input power line and electric-controlled switch circuit K2, direct current input power line and electric-controlled switch circuit Kn are connected to the power bus-bar L1 or conflux on power bus-bar Lm of confluxing, form adjustable electrical path of confluxing, after making any one group of new forms of energy direct current power photovoltaic array Pn connect incoming end, conflux on a wherein bus of power bus-bar L1 or the power bus-bar Lm that confluxes by direct current input power line and electric-controlled switch circuit Kn by the controlled allotment access of control module,
Conflux after power bus-bar L1 is connected DC output power line L1 by L1 protective circuit with L1 lightning protection circuit and access L1 DC output end, form the electric power outgoing route that confluxes of the power bus-bar L1 that confluxes;
Conflux after power bus-bar Lm is connected DC output power line Lm by Lm protective circuit with Lm lightning protection circuit and access Lm DC output end, form the electric power outgoing route that confluxes of the power bus-bar Lm that confluxes;
L1 lightning protection circuit and Lm lightning protection circuit are connected DC output power line L1, DC output power line Lm and lightning protection end respectively, the thunder-lightning power path of constituent apparatus;
Control module connects communication interface and connects direct current input power line and electric-controlled switch circuit K1, direct current input power line and electric-controlled switch circuit K2, direct current input power line and electric-controlled switch circuit Kn and observation circuit T1, observation circuit Tm, L1 protective circuit, Lm protective circuit by system bus, forms communication and Monitoring and Controlling link;
The method of a kind of real-time monitoring collector-shoe gear based on preposition allotment that the present invention proposes, the method characteristic of its real-time monitoring is: prestored in control module control treatment program, and by comparing process by observation circuit T1, and analysis is confluxed, power bus-bar L1 and the direct current supply power confluxed on power bus-bar Lm carry out calculating comparison to the electric power signal that observation circuit Tm gathers, when the power bus-bar L1 and the power bus-bar Lm that confluxes that confluxes divides other electric power >=inversion Effec-tive Function set value of the power W1 or Wm, new forms of energy direct current power photovoltaic array P1 incoming end, new forms of energy direct current power photovoltaic array P2 incoming end, the electric power of new forms of energy direct current power photovoltaic array Pn incoming end input distributes access by set point regulation and control and to conflux power bus-bar L1 and conflux on power bus-bar Lm, when the L1 DC output end that the power bus-bar L1 and the power bus-bar Lm that confluxes that confluxes divides other electric power < to set or Lm DC output end allow the minimum value Wmin of input, calculate comparison by control module and carry out regulation and control and distribute, by new forms of energy direct current power photovoltaic array P1 incoming end, new forms of energy direct current power photovoltaic array P2 incoming end, new forms of energy direct current power photovoltaic array Pn incoming end grouping access is confluxed power bus-bar L1 or the power bus-bar Lm that confluxes, make the maximum power Wmax often organizing the electric power >=Wmin of input and the L1 DC output end of < setting or Lm DC output end permission output, as the electric power < Wmin of new forms of energy direct current power photovoltaic array P1 incoming end, new forms of energy direct current power photovoltaic array P2 incoming end, new forms of energy direct current power photovoltaic array Pn incoming end grouping input, the electric power of multiple for comparison grouping input is accessed the power of a wherein bus of the power bus-bar L1 or the power bus-bar Lm that confluxes that confluxes, carry out corresponding regulation and control when it meets the electric power >=Wmin and the condition of < Wmax that input.
The method of a kind of real-time monitoring collector-shoe gear based on preposition allotment adopting the present invention to propose and technical scheme, the defect of above-mentioned prior art and system can be overcome, how many collector-shoe gears can be allocated according to generating, be combined into and meet electricity that setting requires and be linked into corresponding output end, improve the utilance (can at least increase by more than 10% for electrical efficiency) of the systems generate electricity operating efficiency of powering and luminous energy (wind energy has analogue equally); And when the generator unit of system and material generation local damage and fault, real-time monitoring can be carried out and every raw local damage and fault generator unit, add system survivability, improve the reliability of the system that reduces.
The method of a kind of real-time monitoring collector-shoe gear based on preposition allotment that the present invention proposes, on the new forms of energy direct current power incoming end basis that multichannel input power line is set, according to workload demand, two-way and above multiple-channel output electric power line end are set, and by regulate in real time the grouping of new forms of energy direct current power incoming end and and the Path Connection connecing bus rod realizes corresponding control, in the period that generating is few, by two-way or new forms of energy direct current power incoming end corresponding to multi-channel DC output by regulation and control direct current input power line and electric-controlled switch circuit Kn, the grouping of restructuring new forms of energy direct current power incoming end, the electric power of Shi Gai road DC output end meets the input of corresponding inversion subsystem electric power, inverter is made to reach the electric power input requirements of Effec-tive Function, improve the generating efficiency of system under a small amount of situation generated electricity and input low, other Power Electronic Circuit forms the inverter subsystem of convertor circuit because being in stopped status without input electric power simultaneously, and save a large amount of consumable, be even more important for from net electricity generating and supplying system, effect is more remarkable.
Accompanying drawing explanation
Fig. 1 is the collector-shoe gear schematic block diagram of prior art;
Fig. 2 is a kind of aufbauprinciple schematic block diagram of the real-time monitoring collector-shoe gear based on preposition allotment.
Embodiment
As execution mode and example, by reference to the accompanying drawings a kind of method of the real-time monitoring collector-shoe gear based on preposition allotment is described, but technology of the present invention and scheme are not limited to the content that the present embodiment provides.
Fig. 1 illustrates the collector-shoe gear schematic block diagram of prior art.As shown in Figure 1, new forms of energy direct current power photovoltaic array incoming end (1a), new forms of energy direct current power photovoltaic array incoming end (1b) and new forms of energy direct current power photovoltaic array incoming end (1n) are by direct current input power line (2a), direct current input power line (2b) and direct current input power line (2n) are directly attempted by the power bus-bar that confluxes (6), and DC output end (8) is accessed after observation circuit (3) is connected DC output power line (12) with bus rod protective circuit (4) and bus rod lightning protection circuit (7).Can find out, the power line of multi-channel DC electric power input path is confluxed into single direct current power outgoing route power line by prior art and header box product, and be relatively-stationary in systems in which, the input and output of its direct current power are and cannot regulate and control and regulate in system with installation and operation process.
Figure 2 shows a kind of aufbauprinciple schematic block diagram of the real-time monitoring collector-shoe gear based on preposition allotment.As shown in Figure 2, a kind of method of the real-time monitoring collector-shoe gear based on preposition allotment, this real-time monitoring collector-shoe gear comprises: new forms of energy direct current power photovoltaic array P1 incoming end (1a), new forms of energy electric power photovoltaic array P2 incoming end (1b), new forms of energy electric power photovoltaic array Pn incoming end (1n), direct current input power line and electric-controlled switch circuit K1 (2a), direct current input power line and electric-controlled switch circuit K2 (2b), direct current input power line and electric-controlled switch circuit Kn (2n), observation circuit T1 (3a), observation circuit Tm (3m), L1 protective circuit (4a), Lm protective circuit (4m), conflux power bus-bar L1 (6a), conflux power bus-bar Lm (6m), control module (5), L1 lightning protection circuit (7a), Lm lightning protection circuit (7m), L1 DC output end (8a), Lm DC output end (8m), lightning protection end (9), communication interface (10), system bus (11), DC output power line L1 (12a), DC output power line Lm (12m),
New forms of energy direct current power photovoltaic array P1 incoming end (1a), new forms of energy direct current power photovoltaic array P2 incoming end (1b), new forms of energy direct current power photovoltaic array Pn incoming end (1n) is respectively by direct current input power line and electric-controlled switch circuit K1 (2a), direct current input power line and electric-controlled switch circuit K2 (2b), direct current input power line and electric-controlled switch circuit Kn (2n) are connected to the power bus-bar L1 (6a) or conflux on power bus-bar Lm (6m) of confluxing, form adjustable electrical path of confluxing, after making any one group of new forms of energy direct current power photovoltaic array Pn connect incoming end (1n), conflux on a wherein bus of power bus-bar L1 (6a) or the power bus-bar Lm (6m) that confluxes by direct current input power line and electric-controlled switch circuit Kn (2n) by the controlled allotment access of control module (5),
The power bus-bar L1 (6a) that confluxes is connected DC output power line L1 (12a) by L1 protective circuit (4a) with L1 lightning protection circuit (7a) and accesses L1 DC output end (8a) afterwards, forms the electric power outgoing route that confluxes of the power bus-bar L1 (6a) that confluxes;
The power bus-bar Lm (6m) that confluxes is connected DC output power line Lm (12m) by Lm protective circuit (4m) with Lm lightning protection circuit (7m) and accesses Lm DC output end (8m) afterwards, forms the electric power outgoing route that confluxes of the power bus-bar Lm (6m) that confluxes;
L1 lightning protection circuit (7a) and Lm lightning protection circuit (7m) are connected DC output power line L1 (12a), DC output power line Lm (12m) and lightning protection end (9) respectively, the thunder-lightning power path of constituent apparatus;
Control module (5) connects communication interface (10) and connects direct current input power line and electric-controlled switch circuit K1 (2a), direct current input power line and electric-controlled switch circuit K2 (2b), direct current input power line and electric-controlled switch circuit Kn (2n) and observation circuit T1 (3a), observation circuit Tm (3m), L1 protective circuit (4a), Lm protective circuit (4m) by system bus (11), forms and communicates and Monitoring and Controlling link;
The method of a kind of real-time monitoring collector-shoe gear based on preposition allotment that the present invention proposes, the method characteristic of its real-time monitoring is: prestored in control module (5) control treatment program, and by comparing process by observation circuit T1 (3a), and analysis is confluxed, power bus-bar L1 (6a) and the direct current supply power confluxed on power bus-bar Lm (6m) carry out calculating comparison to the electric power signal that observation circuit Tm (3m) gathers, when confluxing power bus-bar L1 (6a) and the power bus-bar Lm (6m) that confluxes point of other electric power >=inversion Effec-tive Function set value of the power W1 or Wm, new forms of energy direct current power photovoltaic array P1 incoming end (1a), new forms of energy direct current power photovoltaic array P2 incoming end (1b), the electric power that new forms of energy direct current power photovoltaic array Pn incoming end (1n) inputs distributes access by set point regulation and control and to conflux power bus-bar L1 (6a) and conflux on power bus-bar Lm (6m), when the L1 DC output end (8a) that power bus-bar L1 (6a) and the power bus-bar Lm (6m) that confluxes point of other electric power < that conflux sets or Lm DC output end (8m) allow the minimum value Wmin of input, calculate comparison by control module (5) and carry out regulation and control and distribute, by new forms of energy direct current power photovoltaic array P1 incoming end (1a), new forms of energy direct current power photovoltaic array P2 incoming end (1b), new forms of energy direct current power photovoltaic array Pn incoming end (1n) access of dividing into groups is confluxed power bus-bar L1 (6a) or the power bus-bar Lm (6m) that confluxes, make the maximum power Wmax often organizing the electric power >=Wmin of input and the L1 DC output end (8a) of < setting or Lm DC output end (8m) permission output, as the electric power < Wmin of new forms of energy direct current power photovoltaic array P1 incoming end (1a), new forms of energy direct current power photovoltaic array P2 incoming end (1b), new forms of energy direct current power photovoltaic array Pn incoming end (1n) grouping input, the electric power of multiple for comparison grouping input is accessed the power of a wherein bus of conflux power bus-bar L1 (6a) or the power bus-bar Lm (6m) that confluxes, carry out corresponding regulation and control when it meets the electric power >=Wmin and the condition of < Wmax that input.
Known by above-mentioned embodiment, the method for a kind of real-time monitoring collector-shoe gear based on preposition allotment that the present invention proposes and technical scheme, can overcome the defect of prior art and system.On the new forms of energy direct current power incoming end basis that multichannel input power line is set, according to workload demand, two-way and above multiple-channel output electric power line end are set, and by regulate in real time the grouping of new forms of energy direct current power incoming end and and the Path Connection connecing bus rod realizes corresponding control, in the period that generating is few, by two-way or new forms of energy direct current power incoming end corresponding to multi-channel DC output by regulation and control direct current input power line and electric-controlled switch circuit Kn, the grouping of restructuring new forms of energy direct current power incoming end, the electric power of Shi Gai road DC output end meets the input of corresponding inversion subsystem electric power, inverter is made to reach the electric power input requirements of Effec-tive Function, the utilance (at least can increase by the confession electrical efficiency of more than 10%) of the operating efficiency that raising systems generate electricity is powered and luminous energy (wind energy has analogue equally), and when the generator unit of system and material generation local damage and fault, real-time monitoring can be carried out and every raw local damage and fault generator unit, add system survivability, improve the reliability of the system that reduces.
Claims (1)
1. based on a method for the real-time monitoring collector-shoe gear of preposition allotment, this real-time monitoring collector-shoe gear comprises: new forms of energy direct current power photovoltaic array P1 incoming end (1a), new forms of energy electric power photovoltaic array P2 incoming end (1b), new forms of energy electric power photovoltaic array Pn incoming end (1n), direct current input power line and electric-controlled switch circuit K1 (2a), direct current input power line and electric-controlled switch circuit K2 (2b), direct current input power line and electric-controlled switch circuit Kn (2n), observation circuit T1 (3a), observation circuit Tm (3m), L1 protective circuit (4a), Lm protective circuit (4m), conflux power bus-bar L1 (6a), conflux power bus-bar Lm (6m), control module (5), L1 lightning protection circuit (7a), Lm lightning protection circuit (7m), L1 DC output end (8a), Lm DC output end (8m), lightning protection end (9), communication interface (10), system bus (11), DC output power line L1 (12a), DC output power line Lm (12m),
New forms of energy direct current power photovoltaic array P1 incoming end (1a), new forms of energy direct current power photovoltaic array P2 incoming end (1b), new forms of energy direct current power photovoltaic array Pn incoming end (1n) is respectively by direct current input power line and electric-controlled switch circuit K1 (2a), direct current input power line and electric-controlled switch circuit K2 (2b), direct current input power line and electric-controlled switch circuit Kn (2n) are connected to the power bus-bar L1 (6a) or conflux on power bus-bar Lm (6m) of confluxing, form adjustable electrical path of confluxing, after making any one group of new forms of energy direct current power photovoltaic array Pn connect incoming end (1n), conflux on a wherein bus of power bus-bar L1 (6a) or the power bus-bar Lm (6m) that confluxes by direct current input power line and electric-controlled switch circuit Kn (2n) by the controlled allotment access of control module (5),
The power bus-bar L1 (6a) that confluxes is connected DC output power line L1 (12a) by L1 protective circuit (4a) with L1 lightning protection circuit (7a) and accesses L1 DC output end (8a) afterwards, forms the electric power outgoing route that confluxes of the power bus-bar L1 (6a) that confluxes;
The power bus-bar Lm (6m) that confluxes is connected DC output power line Lm (12m) by Lm protective circuit (4m) with Lm lightning protection circuit (7m) and accesses Lm DC output end (8m) afterwards, forms the electric power outgoing route that confluxes of the power bus-bar Lm (6m) that confluxes;
L1 lightning protection circuit (7a) and Lm lightning protection circuit (7m) are connected DC output power line L1 (12a), DC output power line Lm (12m) and lightning protection end (9) respectively, the thunder-lightning power path of constituent apparatus;
Control module (5) connects communication interface (10) and connects direct current input power line and electric-controlled switch circuit K1 (2a), direct current input power line and electric-controlled switch circuit K2 (2b), direct current input power line and electric-controlled switch circuit Kn (2n) and observation circuit T1 (3a), observation circuit Tm (3m), L1 protective circuit (4a), Lm protective circuit (4m) by system bus (11), forms and communicates and Monitoring and Controlling link;
The method characteristic of its real-time monitoring is: prestored in control module (5) control treatment program, and by comparing process by observation circuit T1 (3a), and analysis is confluxed, power bus-bar L1 (6a) and the direct current supply power confluxed on power bus-bar Lm (6m) carry out calculating comparison to the electric power signal that observation circuit Tm (3m) gathers, when confluxing power bus-bar L1 (6a) and the power bus-bar Lm (6m) that confluxes point of other electric power >=inversion Effec-tive Function set value of the power W1 or Wm, new forms of energy direct current power photovoltaic array P1 incoming end (1a), new forms of energy direct current power photovoltaic array P2 incoming end (1b), the electric power that new forms of energy direct current power photovoltaic array Pn incoming end (1n) inputs distributes access by set point regulation and control and to conflux power bus-bar L1 (6a) and conflux on power bus-bar Lm (6m), when the L1 DC output end (8a) that power bus-bar L1 (6a) and the power bus-bar Lm (6m) that confluxes point of other electric power < that conflux sets or Lm DC output end (8m) allow the minimum value Wmin of input, calculate comparison by control module (5) and carry out regulation and control and distribute, by new forms of energy direct current power photovoltaic array P1 incoming end (1a), new forms of energy direct current power photovoltaic array P2 incoming end (1b), new forms of energy direct current power photovoltaic array Pn incoming end (1n) access of dividing into groups is confluxed power bus-bar L1 (6a) or the power bus-bar Lm (6m) that confluxes, make the maximum power Wmax often organizing the electric power >=Wmin of input and the L1 DC output end (8a) of < setting or Lm DC output end (8m) permission output, as the electric power < Wmin of new forms of energy direct current power photovoltaic array P1 incoming end (1a), new forms of energy direct current power photovoltaic array P2 incoming end (1b), new forms of energy direct current power photovoltaic array Pn incoming end (1n) grouping input, the electric power of multiple for comparison grouping input is accessed the power of a wherein bus of conflux power bus-bar L1 (6a) or the power bus-bar Lm (6m) that confluxes, carry out corresponding regulation and control when it meets the electric power >=Wmin and the condition of < Wmax that input.
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