CN104184394A - Household off-grid photovoltaic power generation system - Google Patents

Household off-grid photovoltaic power generation system Download PDF

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Publication number
CN104184394A
CN104184394A CN201410325069.1A CN201410325069A CN104184394A CN 104184394 A CN104184394 A CN 104184394A CN 201410325069 A CN201410325069 A CN 201410325069A CN 104184394 A CN104184394 A CN 104184394A
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China
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contact
batteries
net
load
connects
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CN201410325069.1A
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CN104184394B (en
Inventor
屈柏耿
段春艳
章大钧
王旭伟
陈达明
陈萼
李柏青
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Foshan Polytechnic
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Foshan Polytechnic
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B10/00Integration of renewable energy sources in buildings
    • Y02B10/10Photovoltaic [PV]
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B10/00Integration of renewable energy sources in buildings
    • Y02B10/70Hybrid systems, e.g. uninterruptible or back-up power supplies integrating renewable energies
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/50Photovoltaic [PV] energy
    • Y02E10/56Power conversion systems, e.g. maximum power point trackers
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E70/00Other energy conversion or management systems reducing GHG emissions
    • Y02E70/30Systems combining energy storage with energy generation of non-fossil origin

Abstract

The invention discloses a household off-grid photovoltaic power generation system which includes a photovoltaic assembly, a solar controller, a storage battery and an AC control module. The photovoltaic assembly, the solar controller, the storage battery and the AC control module are sequentially connected. The solar controller is connected with a DC load. The AC control module is connected with the AC load and a mains supply. The photovoltaic assembly receives optical radiation energy in sunlight and converts the energy into electrical energy which is then stored into the storage battery through the solar controller. The solar controller obtains the electrical energy on the storage battery so as to supply power directly to a DC load. The AC control module converts DC of the storage battery into 220V AC to supply power to the AC load on one hand, and on the other hand, controls switching between power supplying of the mains supply and power supplying of the storage battery so that a photovoltaic power generation technology can be applied to most households in our country and a back-up power supply can be provided after power-off.

Description

A kind of family expenses are from net photovoltaic generating system
Technical field
The present invention relates to field of solar energy utilization, in particular a kind of family expenses are from net photovoltaic generating system. ?
Background technology
At present, photovoltaic power generation technology becomes one of main flow generation technology gradually, and it comprises grid-connected application and applies two large classes from net.
Grid-connected application, if the miniaturization of large-scale grid-connected photovoltaic power station is a kind of developing direction wherein, is mainly applicable to the villa type family of single household, and technical development is very ripe and effective.But for the family of residential quarters type, because the area that each household can installation photovoltaic component is limited, transplant after large-scale grid-connected photovoltaic power station technology is directly microminiaturized and come to lack economic benefit.Although grid-connected micro-inversion scheme technical feasibility, designs and installs also very conveniently and light, can also realize easily the advantages such as phase 2 expansion.But, with the development of the state of the art and energy market, current grid-connected micro-inversion scheme also and economic condition good family comparatively leading with regard to small part consciousness is being used, and grid-connected micro-inversion scheme spread in family of China remains at present and is not suitable for or premature.
From net application, as solar energy garden lamp adopts charge and discharge cycles pattern once a day, utilize daytime solar energy to charge to energy-storage battery, utilize evening energy-storage battery electric discharge to realize illumination.Because all power consumptions of this off-grid system are all taken from energy-storage battery completely, the electric cost of every watt is obviously much higher than grid-connected system.Energy-storage battery, have the highest market application percentage at present as valve-control sealed lead acid battery, and more competitive every watt-hour unit price.But under this pattern of charge and discharge cycles once a day, the average life of every group of energy-storage battery is very short comparatively speaking.In the situation that operating ratio is better, hundreds of time charge and discharge cycles causes every two years left and right (the longest service time) just need to change whole group of energy-storage battery, increased a large amount of later stage economic input and the manpower maintenances of user.
At present, for having electricity area, the especially highly stable urban family of mains-supplied, in photovoltaic generation application, from net pattern for general family not too large attraction, lack economic benefit simultaneously.And grid-connected pattern is in the time of mains failure, the isolated island effect prevention based on power grid maintenance personnel life security and the standard that must carry out, the photovoltaic plant that oneself installs also quits work the moment at mains failure immediately.Due to the restriction of community floor design, even the position that can receive sunlight outside house is all paved with to photovoltaic module, existing photovoltaic module and installation thereof cannot meet family's normal need for electricity of every day completely.Lack at present one and meet most of families of China (particularly residential quarters type) and use, even family expenses photovoltaic generating system that also can normal power generation after having a power failure.
Therefore, prior art needs further improve and develop.
In prior art, MR16 lamp need to arrange the just accessible civil power of driving power module of a 220V.And in the present embodiment, the galvanic output of batteries 3 directly can be connected with the power end of MR16 lamp by the first output unit 22.Because the first output unit 22 can direct output of DC current be powered to MR16 lamp, drive without the power supply conversion of 220V, not only realize more high efficiency energy utilization, can also save the driving power module of existing 220V, save cost.
Summary of the invention
In view of above-mentioned the deficiencies in the prior art, the object of the present invention is to provide a kind of family expenses from net photovoltaic generating system, make photovoltaic power generation technology can be applied to most of families of China, after power failure, can provide stand-by power supply.
Technical scheme of the present invention is as follows:
A kind of family expenses are from net photovoltaic generating system, it comprises photovoltaic module, controller for solar, batteries and ac control module, described photovoltaic module, controller for solar, batteries and ac control module are connected successively, described controller for solar connects DC load, and described ac control module connects AC load and civil power;
Described photovoltaic module receives the optical radiation energy in sunlight and is converted into electric energy, is transferred in batteries and is stored by controller for solar, and the electric energy that controller for solar obtains in batteries is directly powered to DC load; Described ac control module is used for being chosen in switching between mains-supplied and batteries power supply, and selection batteries is powered to AC load after the direct current of batteries being converted to 220V alternating current while power supply.
Described family expenses are in net photovoltaic generating system, and described controller for solar comprises:
Converting unit, stores to batteries for the delivery of electrical energy that photovoltaic module is generated;
The first output unit, for controlling manually or automatically the power supply state of batteries to DC load;
The second output unit, for controlling manually or automatically the power supply state of batteries to DC load;
General controls unit, for manually controlling the power supply state of batteries to DC load;
Described converting unit connects photovoltaic module, batteries, the first output unit, the second output unit and general controls unit, and described the first output unit, the second output unit and general controls unit are all connected DC load.
Described family expenses are in net photovoltaic generating system, the control of described the first output unit and the power supply state of the second output unit to DC load comprises: whether timing opens and closes power supply, power and supply power voltage size according to ambient brightness and/or the control of human body proximity state.
Described family expenses are in net photovoltaic generating system, and it also comprises for being 5V voltage by the 12V voltage transitions of batteries output, realizing the DC/DC module of multichannel USB output power supply; Described DC/DC module is connected with described general controls unit.
Described family expenses are in net photovoltaic generating system, and described batteries is in series by 6 valve-control sealed lead acid batteries.
Described family expenses are in net photovoltaic generating system, and it also comprises the SOC battery capacity indication module of the dump energy for showing batteries.
Described family expenses are in net photovoltaic generating system, and described ac control module comprises:
From net sinewave inverter, for converting the direct current of batteries to 220V alternating current;
Double power supply converting switch is the selection switching between 220V AC-powered for realizing mains-supplied and batteries inversion;
Sky is opened unit, for civil power or described 220V alternating current are transferred to AC load power supply;
Describedly open from net sinewave inverter, double power supply converting switch, sky that unit connects successively, describedly connect batteries from net sinewave inverter, sky opens unit and connects AC load.
Described family expenses are in net photovoltaic generating system, and described double power supply converting switch comprises civil power residual current circuit breaker, auxiliary contacts of circuit breaker NC, inverter residual current circuit breaker and guide tracked A.C. contactor; Described civil power residual current circuit breaker is by auxiliary contacts of circuit breaker NC connection guide rail formula A.C. contactor, and guide tracked A.C. contactor connects from net sinewave inverter by inverter residual current circuit breaker.
Described family expenses are in net photovoltaic generating system, and described double power supply converting switch also comprises guide rail type electrical energy meter, it is connected between inverter residual current circuit breaker and guide tracked A.C. contactor.
Described family expenses are in net photovoltaic generating system, described civil power residual current circuit breaker comprises the first contact and the second contact, described auxiliary contacts of circuit breaker NC comprises the 3rd contact and the 4th contact, described inverter residual current circuit breaker comprises the 5th contact and the 6th contact, and described guide tracked A.C. contactor comprises the first coil, the second coil, the 7th contact, the 8th contact, the 9th contact, the tenth contact, the 11 contact, the 12 contact, the 13 contact, photovoltaic indicator light circuit and civil power indicator light circuit;
One end of described the first contact connects the zero line of civil power, the other end of the first contact connects the empty No end of opening unit by the 7th contact, the 9th one end of contact and one end of the 11 contact, one end of described the second contact connects the live wire of civil power, the other end of the second contact connects the empty Lo end of opening unit by the 8th contact, one end of described the first coil connects one end of the 4th contact by the 3rd contact, the Lout end of guide rail type electrical energy meter and one end of the 12 contact, the 13 contact is in parallel with the 3rd contact, the other end of described the first coil connects the other end of the 11 contact, one end of the second coil, the Nout end of photovoltaic indicator light circuit and guide rail type electrical energy meter, the other end of described the second coil connects photovoltaic indicator light circuit, also connect the other end of the 4th contact by the tenth contact, the other end of described the 9th contact connects civil power indicator light circuit, the other end of the 12 contact connects civil power indicator light circuit and the empty Lo end of opening unit, the Lin end of described guide rail type electrical energy meter connects the Lb end from net sinewave inverter by the 5th contact, the Nin end of guide rail type electrical energy meter connects the Nb end from net sinewave inverter by the 6th contact.
A kind of family expenses provided by the invention are from net photovoltaic generating system, by the optical radiation energy in photovoltaic module receiving element sunlight and be converted into electric energy, store in batteries by controller for solar, the electric energy that controller for solar obtains in batteries is directly powered to DC load; Ac control module is converted to 220V alternating current by the direct current of batteries on the one hand and powers to AC load, be controlled on the other hand between mains-supplied and batteries power supply and switch, make photovoltaic power generation technology can be applied to most of families of China, after power failure, can provide stand-by power supply.
Brief description of the drawings
Fig. 1 be in the present invention family expenses from the Application Example schematic diagram of net photovoltaic generating system.
Fig. 2 be in the present invention family expenses from the Application Example schematic diagram of the double power supply converting switch of net photovoltaic generating system.
Fig. 3 be in the present invention family expenses from the Application Example circuit diagram of the double power supply converting switch of net photovoltaic generating system.
Embodiment
The invention provides a kind of family expenses from net photovoltaic generating system, for making object of the present invention, technical scheme and effect clearer, clear and definite, below the present invention is described in more detail.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
The present invention is in conjunction with the consideration of applicable photovoltaic module erection space, installation cost and household electricity aspect of existing market technology, family, provide a kind of family expenses from net photovoltaic generating system, the solar energy of collection can be converted to power storage and supply household electrical appliance, for rationally utilizing solar energy resources to play positive positive facilitation.Refer to Fig. 1, family expenses provided by the invention comprise and connect successively photovoltaic module 1, controller for solar 2, batteries 3 and ac control module 4 from net photovoltaic generating system.Photovoltaic module 1 receives the optical radiation energy in sunlight and is converted into electric energy, stores into safely in batteries 3 by controller for solar 2.Controller for solar 2 is also connected with DC load, directly powers to DC load for the electric energy obtaining in batteries 3; This direct-connected direct current supply mode is powered after existing electric main is converted to direct current again, and reduce AC and DC conversion, thereby can have higher energy utilization efficiency, and energy-conserving and environment-protective.
In the present embodiment, the size of described photovoltaic module 1 is by actual installation location positioning, and model can adopt JW5535/110SP.Take Fushan City, Guangdong Province as example, solar radiation resource in this area's occupy average level substantially in the whole nation.Photovoltaic module 1 is arranged on 13rd floors resident family's Due Souths on the glass guardrail of balcony time, and photovoltaic module 1(adopts aluminium frame assembly) frame be of a size of: wide 669mm, high 923mm, reference area is 0.618m 2, installed capacity nominal value is 110Wp.This installation dimension and cost are for China domestic consumer, and most of family all can bear.When concrete enforcement, photovoltaic module can adopt BIPV(Building Integrated Photovoltaic) building integrated photovoltaic component, can directly change the original glass fence of balcony, the outward appearance that has better associative perception and more coordinate.
Ac control module 4 is electrically connected with AC load and city, be used for being chosen between mains-supplied and batteries power supply and switch, after the direct current of batteries 3 (+12V) being converted to 220V alternating current while selecting batteries power supply, just power to AC load (as household electrical appliance), make family expenses meet the part need for electricity of family from net photovoltaic generating system.Be that user can select civil power voluntarily to part electrical equipment especially illuminalive power-supply or batteries inversion is that 220V alternating current supplies household electrical appliance.In the time selecting civil power to supply household electrical appliance, described ac control module 4 can also detect line voltage in real time, can automatically switch to batteries power supply while detecting mains failure.After power failure, also can ensure like this continued power, guarantee the normal work of part household electrical appliance; These family expenses are higher from net photovoltaic generating system stability, can meet the demand of household electricity.
Please continue to refer to Fig. 1, in the present embodiment, the model of described controller for solar 2 is CIS10-1.1-2L, it comprises converting unit 21, the first output unit 22, the second output unit 23 and general controls unit 24, described converting unit 21 connects photovoltaic module 1, batteries 3, the first output unit 22, the second output unit 23 and general controls unit 24, and described the first output unit 22, the second output unit 23 are all connected DC load with general controls unit 24.
Wherein, described converting unit 21 is stored to batteries 3 for the delivery of electrical energy that photovoltaic module is generated.The first output unit 22, the second output unit 23 and general controls unit 24 are provided with the over circuit of batteries 3.The first output unit 22 and the second output unit 23 all can be controlled the power supply state of batteries 3 to DC load manually or automatically.The main manual control mode that adopts in general controls unit 24 is controlled the power supply state of batteries 3 to DC load.Manually control and adopt mechanical switch or soft-touch control, realized by user's manual operation.
The automatic control mode of the first output unit 22 and the second output unit 23 is realized by its outside input or the inner control command producing.Described control command can be the ultra-red order (outside input) that remote controller (programmable remote controller CIS-CU) sends, and this ultra-red order is for setting the beginning and ending time of power supply.After receiving this beginning and ending time, the first output unit 22 and the second output unit 23 start corresponding timer, after beginning and ending time reaches, the first output unit 22 and the second output unit 23 export to the direct current of batteries (+12V) accordingly DC load or cut off for electrical connection, lights or extinguish the function of DC load to realize timing.When concrete enforcement, described ultra-red order can also be used for setup times power and adjust curve, at dead of night time, light source power (as changed supply power voltage or supply current) is adjusted into 1/2 to 1/5 of standard value, changes brightness in different time points.
Further in embodiment, described control command can also be lighted and be closed by the output voltage control of photovoltaic module, in the first output unit 22 and the second output unit 23, be provided with described light sensor, it can detect current ambient brightness and export corresponding level signal and control the size adjustment of whether powering with supply power voltage, automatically light or extinguish DC load according to ambient brightness to realize, or automatically adjusting the brightness of DC load.After the sun sets, ambient brightness is lower, and DC load is lighted automatically.Before daybreak in morning, again automatically lighted to extinguish after certain time length etc. and control effect.
In order to realize humanized intelligent lighting effect, in the present embodiment, described control command can also be produced by human body proximity sensor, in the first output unit 22 and the second output unit 23, be provided with human body proximity sensor, when human body approaches, light DC load, human body away from time extinguish DC load; Or keep low-light output with extremely low power in the time lighting DC load night, user adjusts output brightness quickly to the brightest while entering predeterminable area (being that human body proximity sensor can sense the region that user is approaching), induction user leaves the rear low-light that slowly becomes.
The MR16 lamp (Multifaceted Reflector, a kind of standard specification halogen reflector lamp of being formulated by numerous manufacturers) that the DC load that described the first output unit 22 connects is 12V.MR16 lamp is installed in furred ceiling in the family mostly, and its light fixture allows user to adjust within the specific limits the shooting angle of light source, provides a kind of quite desirable design light source to the overall lighting environment of family.Described MR16 lamp tradition adopts the tungsten halogen lamp Lamp cup of 12V/20W or 12V/35W, and its good illumination effect, low price, have certain market competitiveness.
When concrete enforcement, the MR16 LED lamp that user should replace with the MR16 lamp of tungsten halogen lamp high-quality is to realize better energy-saving effect, and meanwhile, original connection line is without any amendment.
The DC load that described the second output unit 23 connects is brushless electric machine running lamp, running lamp wherein adopts the LED bulb lamp of 12V/3W, DC brushless motor water pump is 12V/0.8W, and its operation principle and control command producing method are identical with the first output unit 22, do not repeat herein.
The main manual control mode that adopts in general controls unit 24 of controller for solar 2 is controlled the power supply state of batteries 3 to DC load.In the time that the dump energy of batteries 3 is sufficient, as long as user needs, whenever all can manual unlocking or close general controls unit 24, to light or to extinguish DC load.In the present embodiment, the LED bulb lamp that the DC load that general controls unit 24 connects is 12V.Because general controls unit 24 can directly power the delivery of electrical energy of batteries to LED bulb lamp, do not need the excess loss producing through ac converter link.Meanwhile, compare ac power supply method, directly connect DC load, its overall energy utilization efficiency is obviously better.
Further, in embodiment, described general controls unit 24 can also connect DC12V direct current jack, is the DC load power supply of other 12V.
When concrete enforcement, described family expenses also comprise DC/DC module (model is LM2596) from net photovoltaic generating system, it is connected with general controls unit 24, for the supply power voltage of 12V (being the voltage of batteries output) is converted to 5V voltage, to realize multichannel USB output, the load of powering for employing USB modes such as smart mobile phones provides electric power used in everyday.When user connects mobile phone and DC/DC module by usb data line, DC/DC module will automatically start (also can be designed to by manual button start or touch start etc.), the 12V that the DC decompression function of DC/DC module is exported general controls unit 24 transfers the USB output of 5V standard to, charges the phone.After mobile phone has charged, or by mobile phone when usb data line is pulled out, DC/DC module enters resting state automatically, stops 5V voltage transitions and the output of stopping power supply.DC/DC module taking output 5V/1A as example, its specific works principle is:
When actual measurement output current is less than 100mA and keeps after about 8S, can judge that the battery of mobile phone is full of, DC/DC module enters dormancy, stops the work of 5V voltage transitions and the output of stopping power supply, and now the standby current of DC/DC module is less than 50uA magnitude.Wherein, judge that output current is less than the maintenance duration of 100mA and needs relevant with the concrete numerical value of output current, concrete current value is less, and the duration that judgement needs is shorter.While being pulled out as usb data line, output current is zero, and detection maintenance zero current can enter resting state within 2 seconds.Understand the operating state of DC/DC module for the ease of user, an indicator light can also be set in DC/DC module.In the time that DC/DC module enters operating state, indicator light is lighted; While entering resting state, indicator light extinguishes.The multichannel USB output of DC/DC module is except meeting mobile phone charging, and remaining adopts the electronic product of USB interface all can use.
In the specific implementation, the USB output port of DC/DC module can be arranged in wall plug, user is as long as it is that automatically starting DC/DC module is charged that mobile phone first wife's USB charging wire is inserted to this socket, and it can realize the function identical with mobile phone first wife's line charger.And the present embodiment, after mobile phone is full of electricity or when USB charging wire is extracted, because DC/DC module can automatically enter resting state within the several seconds, almost no longer includes any kwh loss.And existing mobile phone use commercial power charged after, if fail to extract in time charger, the electrical connection of charger Reng Yu city can produce certain electric energy loss.Known according to real data statistics, charger does not all disconnect and being connected of civil power for 24 hours within 1 year, and in this year, the extra electric fluxs that consume are very many more.Therefore, mobile phone is full of after electricity, thereby the DC/DC module auto sleep of the present embodiment has reduced electric energy damage, and user can at any time extract mobile phone and can not cause waste of energy, solve existing mobile phone and be full of the problem of not extracting in time the electric energy loss of generation after electricity, saved power resource.
The first output unit 22, the second output unit 23 and general controls unit 24 and the connected DC load in the present embodiment, mentioned are example.In the specific implementation, described controller for solar 2 also can comprise that multiple output units are to provide the design requirement of the DC load that multichannel is different.
Please continue to refer to Fig. 1, in the present embodiment, described batteries 3 is in series by 6 2V 330Ah monomer valve control sealed lead acid batteries, and its voltage/capacity is 12V/330Ah, and maximum charged capacity is 3.96kWh.In described batteries 3, the type selecting of cell has the following advantages: 1, generally required heap(ed) capacity can not be restricted, and storage battery does not need parallel connection; 2, single battery weight is relatively light, transports installation and all facilitates; 3, more much longer than the designed life of conventional 12V storage battery; In the embodiment of the present invention batteries useful life by the standard that is longer than existing design from net photovoltaic system, while rationally use, from about 2 years actual lives of conventional off-grid system design, be increased to more than 10 years design service lifes, under the rationality use prerequisite of fine optimization, its useful life can be up to the desired value by 15 years.Therefore in the time that reality is used, choose this cell batteries, can allow batteries 3 approach to reach even as much as possible its of value designed life, greatly extended the service time of family expenses from net photovoltaic generating system.
In order to facilitate user to understand the electric weight situation of batteries, described family expenses also comprise the SOC battery capacity indication module 31 of the dump energy for showing batteries from net photovoltaic generating system.When concrete enforcement, can adopt magnetoelectricity series pointer instrument to carry out the percentage of clear demonstration dump energy, within the scope of the zones of different on instrument dial, identify current residual electric weight and suggestion occupation mode with different colours simultaneously.As the pointer of instrument is positioned at the green area of dial, represent that the dump energy of batteries is in total the more than 80% of electric weight, the abundant reasonably relieved use of electric weight.When pointer is positioned at yellow area, represent that dump energy is between the 65-80% of total electric weight, the limited suggestion of electric weight is saved and is used.Pointer represents that in the time of orange areas dump energy is between the 55-65% of total electric weight, and in Gai Yi district, power supply remains very safe, but avoids frequent dump energy in the time of this region, still to continue electricity consumption as far as possible, to reach the object of increasing storage battery service life.In the time that pointer is positioned at red area; represent that dump energy is less than 55% of total electric weight; now controller for solar has entered over state; converting unit 21 by the discharge channel (to DC load and AC load for electric channel) that cuts off batteries to protect batteries, until batteries obtains sufficient electric energy again.Before pointer enters green area, controller will not allow batteries output direct current power.
Should be understood that, in order to ensure better the useful life of batteries, when current residual electric weight is less than the reference value 55% of total electric weight, converting unit 21 will be cut off the supply electric channel of batteries to DC load and AC load.Consider after user's need for electricity, in the specific implementation, described family expenses can also comprise that from net photovoltaic generating system it is S201M-C2DC that a direct current sky is opened 32(model), for as urgent direct current supply mouth, to be applicable to urgent electricity consumption situation.Batteries connects direct current sky and opens (as DC12V direct current jack).Open without controller for solar 2 and control due to direct current sky, be not with battery overdischarge defencive function, even if pointer is positioned at red area, batteries also can be opened output voltage electric current by direct current sky and realize power supply.
It should be noted that the high-rise the commercial house newly-built for the modern times, the especially relatively resident family of high-storey, has appreciable wind resource conventionally.In order rationally to utilize wind resource, family expenses described in the present embodiment also arrange a wind-force charging module from net photovoltaic generating system, and it comprises that wind power generation control circuit, direct current sky leave and superminiature direct current wind-driven generator.Wind power generation control circuit is connected with single or multiple superminiature direct current wind-driven generators, and the electric energy that superminiature direct current wind-driven generator is produced according to wind-force is opened to be transferred in batteries by direct current sky and stored.Be arranged on the ultra-miniature wind driven generator of balcony or roof can be without sunlight in the situation that (as cloudy day, night) realize the charging to batteries, can extend preferably the useful life of storage battery, continuous electric energy supplement.The single-machine capacity less (size and outward appearance are as the radiator fan of household PC) of this superminiature direct current wind-driven generator, fail safe are higher and take up room lessly, can facilitate stack side by side when multiple use.Because superminiature direct current wind driven generator output power is very little, as long as wind power generation control circuit has anti-reverse charging and pressure-limiting function, the present embodiment is not construed as limiting its particular circuit configurations.Near wind direction based on high-rise floor is comparatively stable, and this superminiature direct current wind-driven generator need not be followed wind direction setting as conventional wind-driven generator.Therefore, this wind-force charging module is applicable to the user group of general family (inhabitation higher floor) use.
Please continue to refer to Fig. 1, in the present embodiment, described ac control module 4 comprise successively connect open unit 43 from net sinewave inverter 41, double power supply converting switch 42 and sky, describedly connect batteries 3 from net sinewave inverter 41, sky is opened unit 43 and is connected AC load.Be 300W from net sinewave inverter power output, band is slow to be started, and DC12V input, can convert the direct current of batteries 3 to 220V alternating current and supply household electrical appliance.Described double power supply converting switch 42(is containing earth leakage protective) to be mainly used in realizing mains-supplied be the selection switching between 220V AC-powered with batteries inversion.Alternating current after civil power or batteries inversion is opened unit 43 by sky AC load is powered.
In the present embodiment, described sky is opened unit 43 and is comprised that 3 skies are opened, sky opens 1, sky opens 2, sky opens 3, is to exchange that sky is opened, i.e. miniature circuit breaker.The AC load that sky is opened 1 connection can be room illumination lamp.The AC load that sky is opened 2 connections can be parlor illuminating lamp.The AC load that sky is opened 3 connections can be an emergency service socket.
When concrete enforcement, described double power supply converting switch 42 can adopt the manual switching circuit of band protection, and as shown in Figure 2, the integral installation easily of this diverter switch is in standard Din guide rail home distribution box for its Application Example schematic diagram.Described double power supply converting switch 42 comprises civil power residual current circuit breaker 421, auxiliary contacts of circuit breaker NC 422, inverter residual current circuit breaker 423 and guide tracked A.C. contactor 424.Described civil power residual current circuit breaker 421 is by auxiliary contacts of circuit breaker NC 422 connection guide rail formula A.C. contactors 424, and guide tracked A.C. contactor 424 connects from net sinewave inverter 41 by inverter residual current circuit breaker 423.
Wherein, auxiliary contacts of circuit breaker NC(represents closed type) owing to being additional being fixedly mounted in civil power residual current circuit breaker 421, can regard an entirety as with civil power residual current circuit breaker 421, the preferred model of reference is ABB S2-H02.The corresponding preferred model of civil power residual current circuit breaker 421 is GS261-C25/0.03.Guide tracked A.C. contactor 424 applicable model are: NCH8-20/20.
For the ease of understanding the electric weight of inverter output, described double power supply converting switch 42 can also be selected guide rail type electrical energy meter 425, it is connected between inverter residual current circuit breaker 423 and guide tracked A.C. contactor 424.Described guide rail type electrical energy meter 424 adopts the Din guide rails assembling of standard, be mainly used in the present embodiment measuring the output accumulative total energy value from net sinewave inverter 41, also can show the measurement data such as active power, output voltage, output current and power factor (PF) that exchanges output.The optional model of guide rail type electrical energy meter 424 is: ABB C11 110-400.
In the time that civil power residual current circuit breaker 421 is connected, civil power is opened unit 43 for AC load power supply by access sky, now auxiliary contacts of circuit breaker NC 422 is in off-state, the coil no power of guide tracked A.C. contactor 424 disconnects its main contacts, even if now opened from net sinewave inverter 41, the electric energy of exporting from net sinewave inverter 41 also can not powered to AC load.
In the time that user manually closes civil power residual current circuit breaker 421 to cut off civil power, auxiliary contacts of circuit breaker NC 422 is by closure, if now will from net sinewave inverter 41 open and inverter residual current circuit breaker 423 in closure state, the coil electricity of guide tracked A.C. contactor 424 is connected its main contacts, the electric energy of exporting from net sinewave inverter 41 is powered to AC load, and guide rail type electrical energy meter 425 records the output accumulative total energy value from net sinewave inverter 41 simultaneously.
This double power supply converting switch 42 is owing to adopting miniature circuit breaker and annex, and guide rail type contactor connects to form, and its actual volume is very little and simple in structure, can be arranged on easily in the home distribution box of standard.And if user's every day use mains-supplied, any extra electric energy loss is not worked, can not produced to double power supply converting switch 42.Even while using the inversion electric energy of batteries, the active power consuming when double power supply converting switch 42 actual motion is surveyed in 1W, only need few control energy.The practical operation flow process of this double power supply converting switch 42 comprises:
Enable from net sinewave inverter 41.First close civil power, close civil power residual current circuit breaker 421; Then start from net sinewave inverter 41.Now by the 220V AC-powered after inversion.
Enable civil power.First close from net sinewave inverter 41; Then connect civil power residual current circuit breaker 421.Now by mains-supplied.
Double power supply converting switch is simple to operate, is applicable to general domestic consumer and uses.Meanwhile, this double power supply converting switch has certain defencive function, and its reason is: if civil power is in on-state, even if user starts from net sinewave inverter 41 and by inverter residual current circuit breaker 423 closures.Because auxiliary contacts of circuit breaker NC is in off-state, only have the main contacts of civil power residual current circuit breaker 421 exceeded the position of thorough disjunction after, auxiliary contacts of circuit breaker NC just has the possibility of connection, therefore guide tracked A.C. contactor 424 is not worked, and can not be transferred to AC load from the output of net sinewave inverter 41.
If while reactivating civil power, first do not close from net sinewave inverter 41 and directly civil power residual current circuit breaker 421 is closed by described operating process, auxiliary contacts of circuit breaker NC is less than 50% of actuating length in other words at the about 40%(of civil power residual current circuit breaker 421 staff operational stroke, now civil power residual current circuit breaker 421 access failures) time, auxiliary contacts of circuit breaker NC is in off-state, and ac contactor coil power-off immediately simultaneously its main contacts will disconnect rapidly.Therefore, generally speaking, the main contacts of civil power residual current circuit breaker 421 can complete the action of cutting off from the 41 electric power outputs of net sinewave inverter before user really connects civil power.
Please refer to Fig. 3, the circuit structure of the preferred embodiment of described double power supply converting switch shown in Fig. 3, this diverter switch can be arranged in standard Din guide rail home distribution box equally easily, circuit structure performance is more perfect, it is more accurate to locate, and is suitable for use in the user group who switch speed is had to requirements at the higher level.Described civil power residual current circuit breaker 421 comprises the first contact N1 and the second contact N2, is normally opened contact.Described auxiliary contacts of circuit breaker NC 422 comprises the 3rd contact N3 and the 4th contact N4, is normally closed auxiliary contact.Described inverter residual current circuit breaker 423 comprises the 5th contact N5 and the 6th contact N6, is normally opened contact.Described guide tracked A.C. contactor 424 comprises the first coil KM1, the second coil KM2, the 7th contact N7, the 8th contact N8, the 9th contact N9, the tenth contact N10, the 11 contact N11, the 12 contact N12, the 13 contact N13, photovoltaic indicator light circuit 4241 and civil power indicator light circuit 4242.Wherein, the 7th contact N7 and the 8th contact N8 are the main contacts (normally closed) of the first coil KM1.The 9th contact N9 and the tenth contact N10 are the auxiliary contact (often opening) of the first coil KM1.The 11 contact N11 and the 12 contact N12 are the main contacts (often opening) of the second coil KM2, and the 13 contact N13 is the auxiliary contact (often opening) of the second coil KM2.
One end of described the first contact N1 connects the zero line N of civil power, the other end of the first contact N1 connects the empty No end of opening unit by the 7th contact N7, the 9th one end of contact N9 and one end of the 11 contact N11, one end of described the second contact N2 connects the live wire L of civil power, the other end of the second contact N2 connects the empty Lo end of opening unit by the 8th contact N8, one end of described the first coil KM1 connects one end of the 4th contact N4 by the 3rd contact N3, the Lout end of guide rail type electrical energy meter and one end of the 12 contact N12, the 13 contact N13 is in parallel with the 3rd contact N3, the other end of described the first coil KM1 connects the other end of the 11 contact N11, one end of the second coil KM2, the Nout end of photovoltaic indicator light circuit and guide rail type electrical energy meter, the other end of described the second coil KM2 connects photovoltaic indicator light circuit, also connect the other end of the 4th contact N4 by the tenth contact N10, the other end of described the 9th contact N9 connects civil power indicator light circuit, the other end of the 12 contact N12 connects civil power indicator light circuit and the empty Lo end of opening unit, the Lin end of described guide rail type electrical energy meter connects the Lb end from net sinewave inverter by the 5th contact N5, the Nin end of guide rail type electrical energy meter connects the Nb end from net sinewave inverter by the 6th contact N6.
Wherein, the connected contact of the dotted line in Fig. 3 opens and closes simultaneously.Wherein, the first contact N1, the second contact N2, the 3rd contact N3 and the 4th contact N4 be action simultaneously substantially, and during as the first contact N1 and the second contact N2 closure, the 3rd contact N3 and the 4th contact N4 are separated by after the very short time and are opened.The 7th contact N7 and the 8th contact N8 open and close simultaneously, and the 11 contact N11 and the 12 contact N12 open and close simultaneously.When photovoltaic indicator light circuit 4241 has electric current to flow through, while power supply from net sinewave inverter 41, photovoltaic indicator light circuit 4241 its built-in LED lamps that can send blue light are lit.When civil power indicator light circuit 4242 has electric current to flow through, when mains-supplied, civil power indicator light circuit 4242 its built-in LED lamps that can send ruddiness are lit.Like this user can to understand current according to the luminous color of LED lamp be civil power or batteries to AC load power supply.
Fig. 3 has quite comprehensive and perfect defencive function; and only need increase by two small components and can realize well manual and full automatic handoff functionality: select the switch switching for automatic/hand for one; city's electro-detection relay with 2NC contact (being connected between 421 and 424 action to 422 auxiliary contact when simulating people's manual manipulation 421).
The switched system being barricaded as by two newly-increased elements is found in the time that actual motion is tested, if select automatic running status, again power and disconnect in the repetitious automatic switching procedure of civil power at civil power, the desktop computer being connected on Fig. 1 emergency service socket keeps continuous and steady operation always, does not occur any perceptible difference.
About energy consumption aspect, Fig. 3 is in the time that civil power accesses and be set to manual running status, and total power consumption of double-power supply switching device is almost 0, is mainly red led circuit, and representative value is 0.02W; Fig. 3 is in the time that civil power accesses and be set to automatic running status, and the total power consumption of double-power supply switching device is essentially the coil power consumption of city's electro-detection relay, and representative value is less than 0.5W.
In another embodiment of the present invention, described double power supply converting switch can also adopt the full manual manipulation mode being made up of two-way residual current circuit breaker, or commercialization finished product duplicate supply handover module, or three kinds of schemes such as dpdt double-pole double-throw (DPDT) Manual Transfer Switch realize.
Wherein, the full manual manipulation mode of two-way residual current circuit breaker composition is applicable to have the user group of electric specialty; They are volume minimum in the listed five kinds of schemes of the present embodiment, and cost is minimum, and does not increase excess loss.But this scheme must be strict with flow operations, on hardware, only the residual current circuit breaker output parallel connection of two-way standard can need be realized.Civil power residual current circuit breaker and inverter residual current circuit breaker can only be connected one, forbid two circuit breakers, all in the state that closes, therefore not recommend general family to select.
Described commercialization finished product duplicate supply handover module is also applicable to general domestic consumer colony, and optional model is 2P 220V double power supply automatic switching switch, or the mini ATS((Automatic Transfer of single-phase family expenses Switch)).When use, can be set to manual mode to save civil power standby power consumption at ordinary times by commercialization finished product duplicate supply handover module, also can realize full automatic switching.This scheme major advantage is cheap, has comparatively mature technology and marketization production.But because needs use two circuit breakers of electric machine rotation, switch speed is slow (taking the embodiment shown in Fig. 3 as example, actual motion test, even after still can realizing artificial cut-out civil power and manually reclose civil power operation under manual mode, desktop computer all can keep well continuously normal work and there is no one abnormal.And this commercialization finished product duplicate supply handover module is impossible realize, its typical switching time is at 1.5 second-times, than the long decades of times of uninterrupted time of desktop computer requirement).Meanwhile, this commercialization finished product duplicate supply handover module is comparatively heavy, and overall volume is larger than miniature circuit breaker, and what its base neither standard is guide tracked, generally cannot be arranged in home distribution box.
Described dpdt double-pole double-throw (DPDT) Manual Transfer Switch is applicable to the part electric specialty user group to device space no requirement (NR), and it is fairly simple directly and efficient, device security and without excess loss under normal switchover operation flow process; But its volume is larger, and be generally not suitable for all kinsfolk's operations.
Please continue to refer to Fig. 1, in order to facilitate the operating state of user's energy remote controlling household from net photovoltaic generating system, in another preferred embodiment of the present invention, described family expenses also comprise bluetooth module 5 from net photovoltaic generating system, it is connected with converting unit 21, can obtain the working status parameter of controller for solar 2 and the state of charge of batteries transmission according to the reading command of user's input, can also transmission user the modify instruction of input to controller for solar, the operating state of amendment controller for solar.User can download relative application software and realize the ability on-the-spot wireless monitoring function of service data of controller for solar and the test run of controller for solar, parameter being arranged with mobile terminal (as mobile phone, panel computer).Wherein, described family expenses can adopt bluetooth 4.0 modules from net photovoltaic generating system bluetooth module 5, and its volume is very little, can save space.
For example, user by the bluetooth module on mobile phone and family expenses from the wireless connections of net photovoltaic generating system, the reading command of mobile phone transmission user input, family expenses obtain from the bluetooth module 5 of net photovoltaic generating system related data transmission shows the storage battery in real time or dynamically service data such as dump energy, battery tension, current battery current to mobile phone.User can also input related amendments instruction by mobile phone, and the operating state of converting unit in remote wireless control controller for solar, as edit-modify and confirm the operational factor of controller for solar; Directly start test run instruction, allow controller for solar abandon all control parameters duration that all directly output is specified except Cross prevention, as 3 minutes, time span can manually be adjusted.Described family expenses include but not limited to above function from the function that can realize between the bluetooth module 5 of net photovoltaic generating system and mobile terminal.
Bluetooth module 5 based on above-mentioned, in a further embodiment, described family expenses can also be realized remote monitoring by interconnected network mode from net photovoltaic generating system.Be that the Internet is connected with Bluetooth adapter by home router, Bluetooth adapter is connected from the bluetooth module of net photovoltaic generating system with family expenses, as shown in Figure 1.Bluetooth module 5 and the instruction of Bluetooth adapter interaction data by family expenses from net photovoltaic generating system, make user realize the radio communication remote monitoring from net photovoltaic generating system to family expenses by the Internet.Because family expenses are very little to the energy requirement of power supply from the bluetooth module 5 of net photovoltaic generating system, can directly power, receive to complete the bluetooth of data by the RJ45 stitch of the LAN mouth of the home router of definition the signaling transfer point of LAN mouth.When concrete enforcement, as long as Bluetooth adapter is inserted to the LAN mouth of home router, and control software corresponding to free download on the net, can realize remote monitoring function to mounted family expenses from net photovoltaic generating system at any time by surfing Internet with cell phone.
Based on above-mentioned the Internet remote monitoring mode, in the specific implementation, described family expenses can also be realized present upgrading from net photovoltaic generating system, pass through internet transmission upgrade software to controller for solar, family expenses are carried out parameter modification, distributed rationally from net photovoltaic generating system, can optimize especially power, the capacity of batteries etc. of photovoltaic module.Between user and user, can also exchange use experience and the problem of family expenses from net photovoltaic generating system by the Internet between user and manufacturer.Manufacturer can pass through the operating state of the Internet remote detection family expenses from net photovoltaic generating system, transmits corresponding program and carries out system reparation or upgrading to controller for solar, to realize accuracy hommization and the integrity of further improvement design while finding fault.
While it should be noted that concrete enforcement, described family expenses are from net photovoltaic generating system except powering to above-mentioned DC load and AC load, and it can also be for the multi-point source of lower-wattage carries out subregion illuminalive power-supply, so that better light source space sense to be provided.For example, in specific embodiments of the invention, lighting load is LED light source substantially entirely, includes: different capacity and the reasonably combined MR16 shot-light of emergent light angle, a large amount of G4 Crystal lamp pearl, 12 T5 fluorescent lamps, 7 T8 fluorescent lamps, E27 bulb lamp, E14 desk lamp, shaped mirror headlight etc. are comprehensively powered.Due to user can for as listen to the music, the various use scenes of dinner, reading, amusement, friend's party etc. take different lighting demands, design to do different optimum organization to the opening and closing of each light source, the general effect of comparing its optical environment of lighting system that traditional uniform irradiation is evenly distributed is humanized and better, and the reduction that simultaneously consumes electric energy is also suitable considerable.
These family expenses from net photovoltaic generating system except meeting the power supply of daily DC load, the present embodiment also correspondence provides a kind of " family's photovoltaic generation day " function, " family's photovoltaic generation day " is artificial disconnection lighting load and being connected of line, change the electric energy that uses photovoltaic generation to store into, be mainly between two " family's photovoltaic generation day " (generally the longest 1-2 of can be month interval time, the shortest is several days, the length of interval time depends primarily on solar radiation energy total amount and home-use electric weight for the previous period), after normal use of DC load every day, remain the AC load that offers whole family after the energy inversion being accumulated in batteries.The startup of " family's photovoltaic generation day " function can be reference according to the pointer of SOC battery capacity indication module, if pointer continuously a couple of days the top in green area can relievedly enable.In the time rationally using, the actual run time of each " family's photovoltaic generation day " usually can exceed one day, drop near the centre of yellow area during with pointer, can consider to stop, by manually by AC load (as lighting load) again switchback by mains-supplied." family's photovoltaic generation day " function can improve user's energy source use sense of participation, the use of the batteries of making rational planning for; As long as power supply capacity control within the specific limits, meets producer to the operation suggestion of storage battery long-life.Certainly,, if the several months is still not activated " family's photovoltaic generation day " function continuously, can not shine into damage to batteries yet.
Family expenses provided by the invention are comparatively extensive from the applicable user group of net photovoltaic generating system, install more for convenience; Can be after power failure, or carry out emergency service in natural calamity situation about causing power failure; It can also increase national energy-conserving and environment-protective and using energy source consciousness, reduces carbon emission.
Should be understood that, application of the present invention is not limited to above-mentioned giving an example, and for those of ordinary skills, can be improved according to the above description or convert, and all these improvement and conversion all should belong to the protection range of claims of the present invention.

Claims (10)

1. family expenses are from net photovoltaic generating system, it is characterized in that, comprise photovoltaic module, controller for solar, batteries and ac control module, described photovoltaic module, controller for solar, batteries and ac control module are connected successively, described controller for solar connects DC load, and described ac control module connects AC load and civil power;
Described photovoltaic module receives the optical radiation energy in sunlight and is converted into electric energy, is transferred in batteries and is stored by controller for solar, and the electric energy that controller for solar obtains in batteries is directly powered to DC load; Described ac control module is used for being chosen in switching between mains-supplied and batteries power supply, and selection batteries is powered to AC load after the direct current of batteries being converted to 220V alternating current while power supply.
2. family expenses according to claim 1, from net photovoltaic generating system, is characterized in that, described controller for solar comprises:
Converting unit, stores to batteries for the delivery of electrical energy that photovoltaic module is generated;
The first output unit, for controlling manually or automatically the power supply state of batteries to DC load;
The second output unit, for controlling manually or automatically the power supply state of batteries to DC load;
General controls unit, for manually controlling the power supply state of batteries to DC load;
Described converting unit connects photovoltaic module, batteries, the first output unit, the second output unit and general controls unit, and described the first output unit, the second output unit and general controls unit are all connected DC load.
3. family expenses according to claim 2 are from net photovoltaic generating system, it is characterized in that, the control of described the first output unit and the power supply state of the second output unit to DC load comprises: timing open and close power supply, according to ambient brightness and or the control of human body proximity state whether power and supply power voltage size.
4. family expenses according to claim 2, from net photovoltaic generating system, is characterized in that, also comprise that the 12V voltage transitions for batteries is exported is 5V voltage, realize the DC/DC module that multichannel USB output is powered; Described DC/DC module is connected with described general controls unit.
5. family expenses according to claim 1, from net photovoltaic generating system, is characterized in that, described batteries is in series by 6 valve-control sealed lead acid batteries.
6. family expenses according to claim 1, from net photovoltaic generating system, is characterized in that, also comprise the SOC battery capacity indication module of the dump energy for showing batteries.
7. family expenses according to claim 1, from net photovoltaic generating system, is characterized in that, described ac control module comprises:
From net sinewave inverter, for converting the direct current of batteries to 220V alternating current;
Double power supply converting switch is the selection switching between 220V AC-powered for realizing mains-supplied and batteries inversion;
Sky is opened unit, for civil power or described 220V alternating current are transferred to AC load power supply;
Describedly open from net sinewave inverter, double power supply converting switch, sky that unit connects successively, describedly connect batteries from net sinewave inverter, sky opens unit and connects AC load.
8. family expenses according to claim 7, from net photovoltaic generating system, is characterized in that, described double power supply converting switch comprises civil power residual current circuit breaker, auxiliary contacts of circuit breaker NC, inverter residual current circuit breaker and guide tracked A.C. contactor; Described civil power residual current circuit breaker is by auxiliary contacts of circuit breaker NC connection guide rail formula A.C. contactor, and guide tracked A.C. contactor connects from net sinewave inverter by inverter residual current circuit breaker.
9. family expenses according to claim 8, from net photovoltaic generating system, is characterized in that, described double power supply converting switch also comprises guide rail type electrical energy meter, it is connected between inverter residual current circuit breaker and guide tracked A.C. contactor.
10. family expenses according to claim 9 are from net photovoltaic generating system, it is characterized in that, described civil power residual current circuit breaker comprises the first contact and the second contact, described auxiliary contacts of circuit breaker NC comprises the 3rd contact and the 4th contact, described inverter residual current circuit breaker comprises the 5th contact and the 6th contact, and described guide tracked A.C. contactor comprises the first coil, the second coil, the 7th contact, the 8th contact, the 9th contact, the tenth contact, the 11 contact, the 12 contact, the 13 contact, photovoltaic indicator light circuit and civil power indicator light circuit;
One end of described the first contact connects the zero line of civil power, the other end of the first contact connects the empty No end of opening unit by the 7th contact, the 9th one end of contact and one end of the 11 contact, one end of described the second contact connects the live wire of civil power, the other end of the second contact connects the empty Lo end of opening unit by the 8th contact, one end of described the first coil connects one end of the 4th contact by the 3rd contact, the Lout end of guide rail type electrical energy meter and one end of the 12 contact, the 13 contact is in parallel with the 3rd contact, the other end of described the first coil connects the other end of the 11 contact, one end of the second coil, the Nout end of photovoltaic indicator light circuit and guide rail type electrical energy meter, the other end of described the second coil connects photovoltaic indicator light circuit, also connect the other end of the 4th contact by the tenth contact, the other end of described the 9th contact connects civil power indicator light circuit, the other end of the 12 contact connects civil power indicator light circuit and the empty Lo end of opening unit, the Lin end of described guide rail type electrical energy meter connects the Lb end from net sinewave inverter by the 5th contact, the Nin end of guide rail type electrical energy meter connects the Nb end from net sinewave inverter by the 6th contact.
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