A kind of real-time monitoring collector-shoe gear based on the postposition allotment
Technical field
The utility model belongs to new forms of energy power technology field, is specifically related to a kind of real-time monitoring collector-shoe gear based on the postposition allotment.
Background technology
Header box and the DC power distribution cabinet with the ability of confluxing are particularly photovoltaic generation power supply and wind generator system requisite apparatuss when integrated of new forms of energy electric power.When system, the generator units such as photovoltaic array and wind-powered electricity generation unit are the demand that meets supporting inverter and system rated power, photovoltaic module and wind-powered electricity generation unit are carried out to the connection in series-parallel combination, and by the header box device, the power line of multichannel generating unit groups is confluxed into to a road direct current output power line through collector-shoe gear, the electric power that many group smaller power generating unit groups are converged in realization confluxes and becomes larger rated power electric power, and access inverter or access inverter by a plurality of header boxs by DC cabinet again, and the header box device is confluxed, also there is certain defencive function simultaneously.
Prior art and header box product conflux into single direct current power outgoing route power line by the power line of multi-channel DC electric power input path, and in system, be relatively-stationary, the input and output of its direct current power are unadjustable in the system with installation and operation process.In the application of generation of electricity by new energy electric power system, affecting the system generating supplies the factor of electrical efficiency to have two at least, one is generating initial value threshold power and the basic power consumption threshold of system, when the low light level, in the time of can not reaching the minimum generated output of system works, system is not worked, and this stage electric power can only waste; And during the low light level, even generated output reaches the initial power that system works needs, and now power is not high, institute's electricity is used up by the system consumable substantially, the system of electric power storage is arranged just by storage battery power supply, and over-burden for batteries, increases cost of electricity-generating; Another inverter circuit operating efficiency of powering exactly when less is lower, and when generated output is less than 50% rated power usually, its system effectiveness will be not enough to 60%, and system generating power supplying efficiency reduces greatly.Under these two kinds of situations, system effectiveness is extremely low, do not add while controlling, or even negative efficiency, institute's electricity is mainly to produce power consumption.
Summary of the invention
There are the problems referred to above and defect for solving prior art and header box device, the utility model proposes a kind of real-time monitoring collector-shoe gear based on the postposition allotment, comprise: 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, direct current input power line P1, direct current input power line P2, direct current input power line Pn, observation circuit, the bus rod protective circuit, control module, power bus-bar confluxes, the bus rod lightning protection circuit, direct current output L1 end, direct current output Lm end, the lightning protection end, communication interface, system bus, direct current output power line and electric-controlled switch circuit K1, direct current output power line and electric-controlled switch circuit Km, it is characterized in that:
New forms of energy electric 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 are connected on the power bus-bar that confluxes by direct current input power line P1, direct current input power line P2, direct current input power line Pn respectively;
The power bus-bar that confluxes is connected direct current output L1 end and direct current output Lm end by direct current output power line and electric-controlled switch circuit K1, direct current output power line and electric-controlled switch circuit Km by the bus rod protective circuit respectively with the bus rod lightning protection circuit;
The bus rod lightning protection circuit connects respectively conflux power bus-bar and lightning protection end;
Control module connects communication interface and connects observation circuit, bus rod protective circuit, direct current output power line and electric-controlled switch circuit K1, direct current output power line and electric-controlled switch circuit Km by system bus.
By above-mentioned a kind of real-time monitoring collector-shoe gear and the technical scheme based on the postposition allotment the utility model proposes, can overcome the defect of above-mentioned prior art and system, how many collector-shoe gears can be allocated according to generating, be combined into the electric weight of satisfied setting requirement and be linked into corresponding output end, the operating efficiency of raising system generating power supply and the utilance of luminous energy (wind energy has analogue equally) (can at least increase the electrical efficiency that supplies more than 10%);
A kind of real-time monitoring collector-shoe gear based on the postposition allotment the utility model proposes, make multi-channel DC power supply input by monitoring and regulation and control, the output power supply is controlled in real time to the electric power of inverter relatively, make inverter circuit be operated in the electric power interval of efficient operation, can be along with real-time monitoring is carried out in the variation of generating output power, make the electric power of each road DC output end meet the power reguirements of corresponding inversion subsystem electric power, inverter is reached in the electric power scope of efficient operation, improved the generating efficiency of system under the situation of a small amount of generating and input low, the inverter subsystem that simultaneously other Power Electronic Circuit forms convertor circuit because of without input electric power in stopped status, saved a large amount of consumables, for being even more important from the net electricity generating and supplying system, effect is more remarkable.
The accompanying drawing explanation
The collector-shoe gear schematic block diagram that Fig. 1 is prior art;
The schematic block diagram that Fig. 2 is a kind of real-time monitoring collector-shoe gear based on the postposition allotment.
Embodiment
As examples of implementation, by reference to the accompanying drawings a kind of real-time monitoring collector-shoe gear based on the postposition allotment is described, still, technology of the present invention and scheme are not limited to the content that the present embodiment provides.
Accompanying drawing 1 has provided 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), (1b) and (1n) by direct current input power line (2a), (2b) and (2n) directly to be attempted by the power bus-bar that confluxes (6) upper, and access DC output end (8) after observation circuit (3) and bus rod protective circuit (4) and bus rod lightning protection circuit (7) are connected direct current output power line (12).Can find out, prior art and header box product conflux into single direct current power outgoing route power line by the power line of multi-channel DC electric power input path, and in system, be relatively-stationary, the input and output of its direct current power are and can't regulate and control and regulate in the system with installation and operation process.
Accompanying drawing 2 has provided a kind of schematic block diagram of the real-time monitoring collector-shoe gear based on the postposition allotment.As shown in Figure 2, a kind of real-time monitoring collector-shoe gear based on the postposition allotment, comprise: 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), direct current input power line P1 (2a), direct current input power line P2 (2b), direct current input power line Pn (2n), observation circuit (3), bus rod protective circuit (4), control module (5), power bus-bar (6) confluxes, bus rod lightning protection circuit (7), direct current output L1 end (8a), direct current output Lm end (8m), lightning protection end (9), communication interface (10), system bus (11), direct current output power line and electric-controlled switch circuit K1 (12a), direct current output power line and electric-controlled switch circuit Km (12m), it is characterized in that:
It is upper that new forms of energy electric 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) are connected to the power bus-bar that confluxes (6) by direct current input power line P1 (2a), direct current input power line P2 (2b), direct current input power line Pn (2n) respectively, forms the direct current electrical path of confluxing;
The power bus-bar (6) that confluxes is connected direct current output L1 end (8a) and direct current output Lm end (8m) by direct current output power line and electric-controlled switch circuit K1 (12a), direct current output power line and electric-controlled switch circuit Km (12m) by bus rod protective circuit (4) respectively with bus rod lightning protection circuit (7), forms the regulatable electric power outgoing route that confluxes;
Bus rod lightning protection circuit (7) connects respectively conflux power bus-bar (6) and lightning protection end (9), the thunder-lightning power path of constituent apparatus;
Control module (5) connects communication interface (10) and connects observation circuit (3), bus rod protective circuit (4), direct current output power line and electric-controlled switch circuit K1 (12a), direct current output power line and electric-controlled switch circuit Km (12m) by system bus (11), forms communication and Monitoring and Controlling link.
A kind of real-time monitoring collector-shoe gear based on the postposition allotment the utility model proposes, the method characteristic of its real-time monitoring is: the control handling procedure has prestored in control module (5), and the electric power signal gathered by observation circuit (3) by comparison process the direct current supply power on the power bus-bar that confluxes (6) is calculated to comparison, when the electric power of the power bus-bar that confluxes (6) >=direct current output L1 end (8a) and the efficient operate power access set point W1 of the upper inverter of direct current output Lm end (8m) and Wm sum, 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 of new forms of energy direct current power photovoltaic array Pn incoming end (1n) input confluxes through bus rod protective circuit (4) and bus rod lightning protection circuit (7) and passes through direct current output power line and electric-controlled switch circuit K1 (12a) at the power bus-bar that confluxes (6), direct current output power line and electric-controlled switch circuit Km (12m) are by set point allotment electric power and distribute power supply to direct current output L1 end (8a) and direct current output Lm end (8m), the electric power signal gathered by observation circuit (3) by comparison process when control module (5) also calculates comparison to the direct current supply power on the power bus-bar that confluxes (6), when the minimum value Wmin sum that the direct current output L1 end (8a) of the electric power of the power bus-bar that confluxes (6)<setting and direct current output Lm end (8m) allow to input, calculate and compare and regulated and controled by control module (5), the electric power that will conflux on power bus-bar (6) reconfigures by direct current output power line and electric-controlled switch circuit K1 (12a) and direct current output power line and electric-controlled switch circuit Km (12m), make each direct current output Lm end electric power >=Wmin and<the direct current output Lm end of setting allows the maximum power Wmax of output, when the electric power of direct current output Lm end output>Wmax, the electric power that will conflux on power bus-bar (6) regulates and controls to offer 2 or more DC output end again by direct current output power line and electric-controlled switch circuit K1 (12a) and direct current output power line and electric-controlled switch circuit Km (12m), make each DC output end meet output electric power >=Wmin and<the imposing a condition of Wmax.
Known by above-mentioned embodiment, a kind of real-time monitoring collector-shoe gear and the technical scheme based on the postposition allotment the utility model proposes, can overcome the defect of above-mentioned prior art and system, how many collector-shoe gears can be allocated according to generating, be combined into to meet and set the electric weight required and be linked into corresponding output end, make multi-channel DC power supply input by monitoring and regulation and control, the output power supply is controlled in real time to the electric power of inverter relatively, make inverter circuit be operated in the electric power interval of efficient operation, can be along with real-time monitoring is carried out in the variation of generating output power, make the electric power of each road DC output end meet the power reguirements of corresponding inversion subsystem electric power, inverter is reached in the electric power scope of efficient operation, for being even more important from the net electricity generating and supplying system, effect is more remarkable.