CN106655244B - A kind of modification method of pv grid-connected plant - Google Patents
A kind of modification method of pv grid-connected plant Download PDFInfo
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- CN106655244B CN106655244B CN201610703770.1A CN201610703770A CN106655244B CN 106655244 B CN106655244 B CN 106655244B CN 201610703770 A CN201610703770 A CN 201610703770A CN 106655244 B CN106655244 B CN 106655244B
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- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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Abstract
A kind of modification method in the grid-connected power station of novel photovoltaic, this method uses solar energy power generating impedance regulating by potential resistance value optimum position in the range of the permissible value of 0.55 Ω≤R≤1.82, make two rated voltage, rated current factors formed optimization determine compare relation, change ratio between two factors levels off to " 1 ", the numerical value that making voltage reduces is equal to the numerical value of electric current increase, finally makes between electric current and voltage peer switch and power can be kept constant.
Description
Technical field
The present invention relates to a kind of modification method of pv grid-connected plant, and in particular to one kind is hindered using solar energy power generating
The modification method in the grid-connected power station of novel photovoltaic of anti-adjusting means.
Background technology
Conventional photovoltaic interconnection technology causes the high cost ineffective rate of photovoltaic generation, this is to State owned land despite potential resistance
Resource and material resources cause greatly to waste, while are cut off in harmonic wave flickering, inversion, high pressure aerial drainage, low pressure off-the-line, and public frequency is dirty
The hidden danger that can not be excluded is left in terms of dye, for high pressure aerial drainage event caused by flickering such as event of being struck by lightning, the scene of low pressure off-the-line will
Be the sea of fire in flakes, this be by a definite date the more than ten years uninterruptedly experiment repeat experience, be not to infer the fable sent without foundation,（If my god
Jin Gang blasts loss upper 10,000,000,000 is not forgotten also）For country and the safety of the whole people, we not wait, and bigger the repeated performance of tragedy.
Solar photovoltaic generation system in solar photovoltaic grid-connection power station includes solar battery sheet, and it mainly includes crystalline substance
Body silion cell.Crystal silicon solar energy battery has series resistance and parallel resistance, and cell piece can simply regard such a as
Model：The source-series resistance of one constant current, a resistance in parallel；Wherein series resistance is usually the electricity by positive silver-colored grid
The resistance of resistance, silicon sheet material resistance in itself and Al-BSF causes.And parallel resistance does not have such a resistance actually,
Because cell piece has leakage current, it is in opposite direction with cell piece output current, therefore can offset part output current, makes output
Current reduction, this is equivalent to a resistor coupled in parallel on a cell piece.
The grid-connected total installed capacity in China comes first of global total installed capacity, and more than 50GW, it is produced per year statistics in 2015
Value estimation is more than 700,000,000,000, wherein 455,000,000,000 economic growth belong to bubble economy, we want to retrieve these huge virtual warps
Ji, we want to avoid the generation of major disaster, and every conventional art is built up grid-connected, either demolish or upgrade.
Scientific practice since over half a century, people has gradually been recognized the transformational relation between light and electricity, established
Light is exactly electric theory, and therefore, solar power generation is now referred to as photovoltaic generation by people.
The theoretical of electron transition proposes that in the Soviet Union silicon wafer battery is produced in the U.S., and technique perfect in workmanship is in Japan, equipment
Germany is matched with comprehensively, and an incision technology of China's photovoltaic industry chain is introduced from Germany, and we do not have the knowledge of autonomous innovation
It property right, can only accompany behind other country, with cheap cheap product of working out, then be competed with the convention of price dumping international
Society.
At the beginning of 2013, the investigational data of China Electric Power Research Institute's publicity, Tibet Yangbajing photovoltaic plant is most
The high-power reactive voltage flickering for being per minute 75% flickering amplitude, indicating more than 70%, the evil for causing oscillatory type to run
Property circulation, the frequency pollution to 50 hertz of public electric wire net is a typical leading case.
At the beginning of 2013, national grid is to the analogue data of grid-connected electricity operation ladder decay, and 140,000 yuan simultaneously per hour
The electric power of net, it can only finally be sold away with 50,000 yuan of commodity value, power network must be born by 90,000 yuan of profit and loss.So photovoltaic
The grid-connected quality of power supply turns into a unsolved mystery, 1.15 yuan of the Qinghai Province's original/grid-connected electricity price of degree, provisional 20% valuation so far
Branch is paid, and Xinjiang, grid-connected do not allow slowly of Inner Mongol access power network, and electricity power enterprise is it is thought that abandon light behavior.But nobody
In all fairness photovoltaic the present bubble economy how huge in made in China, and bank, enterprise, power network bundled, into
For the community of destiny
Grid-connected, due to 35.7% true efficiency, being doomed photovoltaic plant itself apparent energy can not contribute.China Zhejiang
Jiang Sheng has the self-built photovoltaic plant of the factory of many, but there is no one to be truly realized the case generated power for their own use, and can not all contribute
Void electricity and into national grid, oneself using rely on national grid supply.The universal grid-connected electric power in China, from quality
Speech, maximum go out only within 35.7%, illustrate that parallel network reverse has all been accomplished to change very with vacation to the greatest extent.So on, it is grid-connected in public affairs
When net accounts for 10% ratio, power network is held when dare not accept, and the significantly flickering of reactive voltage, inversion is cut off, and high pressure aerial drainage certainly will
Cause the local paralysis of national grid.It is very harmful as indicated in thunderbolt event during 35KV --- 600KV high pressure aerial drainage；Photovoltaic
The scene of square formation off-the-line will be that a piece of company in the sea of fire is a piece of.This is 12 years experience uninterruptedly tested, and is not the residence imagined
Speech.Spain voluntarily dissolves in square formation automatic parallel off in 2005, welding tin band, the failure of Japanese demonstration project down techniques scheme
Caused by a greater amount of equipment of power network infrastructure, the fact that these are all borne out by ironclad evidence authority.The Chinese big rule of photovoltaic centralization
Model example, Ohmic resistance theorem pell-mell development is run counter to despite potential resistance, endless potential safety hazard under hiding.In China energetically
The important period of town and country popularization photovoltaic generation is promoted, we there must not be a bit idea of leaving things to chance, should highly vigilant of obsolete techniques
Disaster crisis because the safety problem of state's industrial development people's lives cannot be properly settled, related new industry is also
It normally can not in an orderly manner go on, if our process runs counter to scientific truth, subjective development, will turn into disaster and go through
History is fallen back.Investigate forensic data on the spot below：
First case is collected evidence：2013 Antarctica of Nian9Yue Qinghai Province one tower draws 20MW to be incorporated into the power networks data.
The power station is the electricity that 600V operating voltages are formed with group string that confluxes of 20 component series connection of 8.676A, 30V component
Stand, effective work of actual normal operation peak power point value is 500V.Because the potential resistance of group string is exceeded, 16.66% is caused
Reactive voltage, the electricity that 20 megawatts of photovoltaic plant is sent less per hour are：20X1248AX100V=2496KW, myopia is in 2500
Degree electricity just loses 2500 yuan of economy, and one-day loss is more than 10000 yuan.
Second case is collected evidence：The Xinjiang of in August, 2014 is good to contain solar energy diversion demonstration project.
Installed capacity 10.56KW loads water pump 2.5KW, the actual batch (-type) mean effective power 840W continuously run, reason
Practical efficiency by installation is 8%, because its potential resistance is 110 Ω in 5A, 550V component lines, severe overweight is dived
Electric energy conservation is thoroughly destroyed in resistance, this diversion demonstration project is then a kind of operation of batch (-type), the direct current before inverter
It is synchronous to change liquid crystal display data with alternating voltage after inverter（400V、4V、8V、16V、32V、64V、120V、240V、
280V、320V、360V、380V、400V、4V）/ 3 seconds, in 3 seconds one cycle period of oscillations, because empty electricity can not contribute water
When pump starts work every time, operating voltage straight line more than photo-voltaic power supply 660V open-circuit voltages is dropped to 4V and 400V area
Between, inversion is cut off automatically, and when moment electricity goes back up to original position, inverter starts again, is suspended again, and 3 seconds repetitive cyclings once are dodged
Become, 50 hertz of public network frequency will be polluted by 10 hertz or so of impact.For 2.5KW water pumps, the alternating current of motor work
Pressure, the section floating 99% fall change, and the speed that 3600 revs/min of motor is run at 1200 revs/min all the time, three/
Two power is damaged.
3rd evidence obtaining：In October, 2015, Zhejiang Yuhuan new technology conventional art contrast experiment.
This experiment case study is primarily used to witness grid-connected power quality problem, and it is with two same inverters
Two electricity generation systems are made to be contrasted.
4 days 10 January in 2016:00——13:00 electric station grid connection runs electrical parameter document report（Weather conditions are fine）Such as
Table 1 below：
Table 1：Electric station grid connection runs electrical parameter document report
Each species diversity that three above evidence obtaining case is shown, all it is the real authority of China's photovoltaic net, in such technology
Under background, the development of our blindnesses is exactly waste of resource, runs counter to natural law construction and is equal to manufacture disaster.
The empty electricity of photovoltaic is grid-connected once accounting for more than 10% proportion, and the voltage of whole public network will be completely out of control, significantly dodges
When becoming aerial drainage, it is a piece of that the location of grid-connected connection reforms into the sea of fire.
The content of the invention
To solve the defects of above-mentioned prior art, it is an object of the invention to the technique improvement in the grid-connected power station of novel photovoltaic,
It is to save the bank bundled by virtual bubble economy, photovoltaic enterprise, national grid destiny community, solve whole people's electricity consumption
Daily life safety problem, technique improvement objectives：
1st, it is output probability China is grid-connected, that theory installation is realized, by current 78.9%, brings up to 97.9%,
Production capacity is set to rise 19% percentage.
2nd, it is by the grid-connected relay load acting effect in China, by current 35.7%, brings up to 97.9%, make photovoltaic simultaneously
The quality of power supply of net rises 62.2% specified ratio.
3rd, it is constant in inversion auxiliary facility, daylighting area is constant, on the premise of cost of investment is basically unchanged, a power station
2.6 times after improvement before practical value >=upgrading.
4th, it is by potential resistance Effective Regulation, electricity generation system reactive voltage is changed into active voltage, just non-constant current is unstable
The power supply of pressure, become non-constant current and the power supply of relative voltage stabilizing, solve this international technology problem.From this grid-connected relay power
With pay(useful) load power, as the corresponding relation of approximation 100%, will solve empty electricity online and also just dissolved economic conflict and ask
Topic, 4 target datas of the above are realized, that is, the present invention protrudes progressive conduct in electric power energy technological sciences.
For achieving the above object, the technical solution adopted by the present invention is as follows：
A kind of solar energy power generating impedance regulating, including：Shell 1, the impedance in the inner chamber of shell 1 are adjusted
Save device 4, connection sheet 6, fin, insulation cut-off 7, impedance regulator mounting hole 8, conflux negative electrode 10 and the anode 11 that confluxes；It is special
Sign is：The impedance regulator 4 includes silicon controlled module 5 and broadband 9 of confluxing；The silicon controlled module 5 includes controllable silicon mould
Block forward direction 2 and silicon controlled module reverse 3, the input of the silicon controlled module 5 are silicon controlled module forward direction 2, output end for can
Control silicon module reverse 3.
Described solar energy power generating impedance regulating, the device include conflux negative electrode 10, resistance according to succession
Anti- adjuster 4 and 11 3 support bodies of anode that conflux, three support bodies form one group in photovoltaic group string circuit；It is being applied to photovoltaic simultaneously
When netting in power station, a unit in the power station includes multigroup solar energy power generating impedance regulating, wherein, first group of sun
The silicon controlled module reverse 3 of the conflux negative electrode 10 and its impedance regulator 4 of energy photovoltaic generation impedance regulating links together,
As the negative pole of a unit；Conflux anode 11 and its impedance regulator of another group of solar energy power generating impedance regulating
4 silicon controlled module forward direction 2 links together, and turns into the positive pole of a unit.
Described solar energy power generating impedance regulating, wherein：The negative electrode 10 that confluxes includes 6 male plugs,
6 male plugs and long 25cm, wide 3cm, thick 0.25cm copper coin broadband are middle by plastic packaging after welding together, and outside both ends
Dew turns into the outer contact of the negative electrode that confluxes；The anode 11 that confluxes includes 6 parent form plugs, 6 parent form plugs and long 25cm, width
3cm, thick 0.25cm copper coin broadband are middle by plastic packaging after welding together, and both ends are exposed as the outer contact of the anode that confluxes；And
And the negative electrode 10 that confluxes turns into a stand-alone assembly after plastic packaging；The anode 11 that confluxes turns into one after plastic packaging
Stand-alone assembly.
Described solar energy power generating impedance regulating, wherein：The impedance regulator 4 is including rated current
800A silicon controlled module 5 and rated current is 800A broadband 9 of confluxing；The side of impedance regulator 4 is by 6 parent form plugs
Weld together with silicon controlled module reverse 3, opposite side is welded together by 6 male plugs and silicon controlled module forward direction 2；Institute
The shell 1 stated is made of the resistance to fire-resistant engineering plastics of high temperature resistant, is strip structure；While by 6 group strings in described shell 1
Positive pole plug connector links together with silicon controlled module 5, and another side passes through long 25cm, wide 3.2cm, thick 0.4cm broadband of confluxing
Abreast weld 6 negative pole connectors；Described fin is fixed on the plane of silicon controlled module 5, and the connection sheet 6 is by controllable silicon
After module 5 and broadband 9 of confluxing connect, the fixed feet of the impedance regulator 4 is fixed by screws in the inner cover plate of shell 1 envelope
Dress, and the fixed feet both ends for broadband connection 9 of confluxing provide tie point between impedance regulating.
A kind of grid-connected power station of novel photovoltaic, it is characterised in that：Hindered using the solar energy power generating described in such scheme
Anti- adjusting means adjusts potential resistance.
The grid-connected power station of described novel photovoltaic, wherein：Potential resistance value after regulation is located at the model of 0.55 Ω≤R≤1.82
In enclosing.
The grid-connected power station of described novel photovoltaic, wherein：Power supply through conflux negative electrode 10 and the output of anode 11 of confluxing, is through double
The rectified safety power supply for preventing from flowing backwards of ripple.
The grid-connected power station of described novel photovoltaic, wherein：Pacify in a unit of solar energy power generating impedance regulating
Install into conflux described in carrying out before broadband 9 and the connection of the silicon controlled module 5；Specifically include：Piece 6 is disconnected, makes resistance
The silicon controlled module forward direction 2 and silicon controlled module reverse 3 of anti-adjuster 4 are disconnected from each other；When the negative electrode 10 that confluxes of the unit is with converging
Stream anode 11 install it is complete after, then connection sheet 6 connected into fastening；The effect of described connection sheet 6 is by silicon controlled module forward direction 2
3 connection reverse with silicon controlled module；The effect of described insulation cut-off 7 is that the broadband 9 that will conflux isolates with silicon controlled module 5.
The grid-connected power station of described novel photovoltaic, wherein：The grid-connected power station of novel photovoltaic includes multiple units, the multiple
1 unit in unit includes 6 compartments of identical, is connected between 6 compartments by 5 impedance regulators 4, described
Every 1 compartment in 6 compartments includes 6 group strings in parallel, and every 1 group string in 6 group strings includes series connection and connected
5 components connect；The side of the 1st impedance regulator 4 in 5 impedance regulators 4 passes through 6 plugs and the 1st compartment
6 group strings negative pole connection, opposite side is connected by 6 plugs with the positive pole of 6 group strings of the 2nd compartment；5 impedances
The side of the 2nd impedance regulator 4 in adjuster 4 is connected with the negative pole of 6 group strings of the 2nd compartment by 6 plugs, is another
Side is connected by 6 plugs with the positive pole of 6 group strings of the 3rd compartment；The 3rd impedance regulation in 5 impedance regulators 4
The side of device 4 is connected by 6 plugs with the negative pole of 6 group strings of the 3rd compartment, opposite side passes through 6 plugs and the 4th compartment
The positive pole connection of 6 group strings；The side of the 4th impedance regulator 4 in 5 impedance regulators 4 passes through 6 plugs and
The negative pole connection of 6 group strings of 4 compartments, opposite side are connected by 6 plugs with the positive pole of 6 group strings of the 5th compartment；Described 5
The side of the 5th impedance regulator 4 in individual impedance regulator 4 is connected by the negative pole of 6 plugs and 6 group strings of the 5th compartment
Connect, opposite side is connected by 6 plugs with the positive pole of 6 group strings of the 6th compartment；The positive pole of 6 group strings of the 1st compartment with
The anode 11 that confluxes of solar energy power generating impedance regulating is connected, the negative pole and the sun of 6 group strings of the 6th compartment
The negative electrode 10 that confluxes of energy photovoltaic generation impedance regulating is connected；There to be the mutually isostructural with above-mentioned 1 unit first list
Member, second unit and third unit are connected in parallel into the first subunit, will have the mutually isostructural with above-mentioned 1 unit the 4th list
Member, Unit the 5th and Unit the 6th are connected in parallel into the second subunit；It is afterwards that the first subunit is in parallel with the second subunit even
Connect；Described first module, second unit, third unit, Unit the 4th, Unit the 5th and the anode that confluxes of the 6th unit one end
Positive electrode bus, described first module, second unit, third unit, Unit the 4th, the 5th list are connected to become by bus bar
The negative electrode that confluxes of member and the 6th unit other end is connected to become negative electrode bus by bus bar；Wherein, the first subunit and
Two subunits form generating square formation system, and the positive and negative electrode bus output rated current of the generating square formation is 312.336A, specified electricity
Press as 900V, and the potential resistance value of system is 2.88 Ω；
Or the grid-connected power station of novel photovoltaic includes multiple units, a unit in the multiple unit includes identical
4 compartments, be connected by 3 impedance regulators 4 between 4 compartments, every 1 compartment in 4 compartments is equal
Include 6 group strings in parallel, every 1 group string in 6 group strings includes 5 components being connected in series；3 impedances
The side of the 1st impedance regulator 4 in adjuster 4 is connected with the negative pole of 6 group strings of the 1st compartment by 6 plugs, is another
Side is connected by 6 plugs with the positive pole of 6 group strings of the 2nd compartment；The 2nd impedance regulation in 3 impedance regulators 4
The side of device 4 is connected by 6 plugs with the negative pole of 6 group strings of the 2nd compartment, opposite side passes through 6 plugs and the 3rd compartment
The positive pole connection of 6 group strings；The side of the 3rd impedance regulator 4 in 3 impedance regulators 4 passes through 6 plugs and
The negative pole connection of 6 group strings of 3 compartments, opposite side are connected by 6 plugs with the positive pole of 6 group strings of the 4th compartment；Described
The positive pole of 6 group strings of 1 compartment is connected with the anode 11 that confluxes of solar energy power generating impedance regulating, the described 6th every
The negative pole of 6 group strings of section is connected with the negative electrode 10 that confluxes of solar energy power generating impedance regulating；To have and above-mentioned 1
Individual unit mutually isostructural first module, second unit and third unit are connected in parallel into the first subunit, will had and above-mentioned 1
Individual unit mutually isostructural Unit the 4th, Unit the 5th and Unit the 6th are connected in parallel into the second subunit；To have and above-mentioned 1
Individual unit mutually isostructural Unit the 7th, Unit the 8th and Unit the 9th are connected in parallel into the 3rd subunit, will had and above-mentioned 1
Individual unit mutually isostructural Unit the tenth, Unit the 11st and Unit the 12nd are connected in parallel into the 4th subunit；Afterwards by
One subunit, the second subunit, the 3rd subunit are connected in parallel with the 4th subunit；Described first module is to Unit the 12nd
The anode that confluxes of one end is connected to become positive electrode bus, described first module to the 12nd unit other end by bus bar
The negative electrode that confluxes is connected to become negative electrode bus by bus bar；Wherein, the first subunit, the second subunit, the 3rd subunit and
4th subunit forms generating square formation system, and the positive and negative electrode bus output rated current of the generating square formation is 625A, rated voltage
For 600V, and the potential resistance value of system is 0.96 Ω.
The grid-connected power station of described novel photovoltaic, wherein：The pv grid-connected plant includes 4 generating square formation systems；Wherein
The rated current of 1st generating square formation system is 312.336A, rated voltage is 900V voltages, contains the potential resistance 2.88 of system
Ω；Rated current 312.336A, the rated voltage 900V of 2nd generating square formation system, contain the potential Ω of resistance 2.88 of system；Should
The bus of 1st and the 2nd generating square formation system is that negative electrode bus is in parallel with negative electrode bus, positive electrode bus is in parallel with positive electrode bus, into
Power supply is specialized in for First 500KW inverters, the rated current of the power supply is 624A, rated voltage 900V, and power supply is potential
Resistance is 1.44 Ω；The rated current of wherein the 3rd generating square formation system is 312.336A, rated voltage is 900V voltages, is contained
The potential Ω of resistance 2.88 of system；Rated current 312.336A, the rated voltage 900V of 4th generating square formation system, contain system
The potential Ω of resistance 2.88；The bus of 3rd and the 4th generating square formation system is that negative pole is in parallel with negative pole, positive pole is in parallel with positive pole, into
Power supply is specialized in for second 500KW inverter, the rated current of the power supply is 624A, rated voltage 900V, and power supply is potential
Resistance is 1.44 Ω.
The grid-connected power station of described novel photovoltaic, wherein：The improvement of the pv grid-connected plant is by three Optimizing Flows by original
The potential resistance for the power supply that rated current is 8.676A, rated voltage is 900V is regulated and controled to 1.44 Ω by 103.7 Ω, by power supply
Potential resistance value is limited in the range of the permissible value of 0.55≤R≤1.82, forms two rated voltage, rated current factors fixed
Than relation, the data that making voltage reduces are equal to electric current increase, and peer switch can be turned into by making between electric current and voltage keeps power
All the time it is constant, make electricity generation system reactive voltage be locked in 0.16% scope, effective operating voltage is real up to 99.84% end value
Existing non-permanent and voltage stabilizing purpose.
The grid-connected power station of described novel photovoltaic, wherein：The negative electrode 10 that confluxes, conflux anode 11 and impedance regulator 4 three
Kind element complements one another, and major function is as follows：Conflux negative electrode 10, the anode 11 that confluxes is combined into one within generator unit as double
Ripple rectifier, the positive and negative electrode of its respective institute's band is the safety guard for preventing high pressure aerial drainage from inversely striking back.
A kind of modification method in the grid-connected power station of novel photovoltaic, it is characterised in that adjusted and filled using solar energy power generating impedance
The regulation for carrying out the potential resistance in power station is put, wherein the solar energy power generating impedance regulating includes：Shell 1, it is arranged on
Impedance regulator 4, connection sheet 6, fin, insulation in the inner chamber of shell 1 separate 7, impedance regulator mounting hole 8, conflux the moon
Pole 10 and the anode 11 that confluxes；It is characterized in that：The impedance regulator 4 includes silicon controlled module 5 and broadband 9 of confluxing；It is described can
Controlling silicon module 5 includes silicon controlled module forward direction 2 and silicon controlled module reverse 3, and the input of the silicon controlled module 5 is controllable silicon
Module forward direction 2, output end are silicon controlled module reverse 3.
The modification method in the grid-connected power station of described novel photovoltaic, wherein, the solar energy power generating impedance regulating
Include conflux negative electrode 10, impedance regulator 4 and 11 3 support bodies of anode that conflux according to succession, three support bodies are in photovoltaic group string
One group is formed in circuit；When being applied in pv grid-connected plant, a unit in the power station is sent out including multigroup photovoltaic
Electrical impedance adjusting means, wherein, the negative electrode 10 that confluxes of first group of solar energy power generating impedance regulating is adjusted with its impedance
The silicon controlled module reverse 3 of device 4 links together, and turns into the negative pole of a unit；Another group of solar energy power generating impedance is adjusted
The silicon controlled module forward direction 2 of the conflux anode 11 and its impedance regulator 4 of regulating device links together, and is turning into a unit just
Pole.
The modification method in the grid-connected power station of described novel photovoltaic, wherein：The negative electrode 10 that confluxes includes 6 male plugs,
6 male plugs and long 25cm, wide 3cm, thick 0.25cm copper coin broadband are middle by plastic packaging after welding together, and outside both ends
Dew turns into the outer contact of the negative electrode that confluxes；The anode 11 that confluxes includes 6 parent form plugs, 6 parent form plugs and long 25cm, width
3cm, thick 0.25cm copper coin broadband are middle by plastic packaging after welding together, and both ends are exposed as the outer contact of the anode that confluxes；And
And the negative electrode 10 that confluxes turns into a stand-alone assembly after plastic packaging；The anode 11 that confluxes turns into one after plastic packaging
Stand-alone assembly.
The modification method in the grid-connected power station of described novel photovoltaic, wherein：The impedance regulator 4 is including rated current
800A silicon controlled module 5 and rated current is 800A broadband 9 of confluxing；The side of impedance regulator 4 is by 6 parent form plugs
Weld together with silicon controlled module reverse 3, opposite side is welded together by 6 male plugs and silicon controlled module forward direction 2；Institute
The shell 1 stated is made of the resistance to fire-resistant engineering plastics of high temperature resistant, is strip structure；While by 6 group strings in described shell 1
Positive pole plug connector links together with silicon controlled module 5, and another side passes through long 25cm, wide 3.2cm, thick 0.4cm broadband of confluxing
Abreast weld 6 negative pole connectors；Described fin is fixed on the plane of silicon controlled module 5, and the connection sheet 6 is by controllable silicon
After module 5 and broadband 9 of confluxing connect, the fixed feet of the impedance regulator 4 is fixed by screws in the inner cover plate of shell 1 envelope
Dress, and the fixed feet both ends for broadband connection 9 of confluxing provide tie point between impedance regulating.
The modification method in the grid-connected power station of described novel photovoltaic, wherein：Power station after being adjusted using the modification method is potential
Resistance value is located in the range of 0.55 Ω≤R≤1.82.
The modification method in the grid-connected power station of described novel photovoltaic, wherein：Through negative electrode 10 and the output of anode 11 of confluxing of confluxing
Power supply, it is through the rectified safety power supply for preventing from flowing backwards of double wave.
The remodeling method in the grid-connected power station of described novel photovoltaic, wherein the application of the impedance regulator 4 passes through three streams
Journey completes the improvement in traditional power station：Wherein, first pass includes：According to the unique characteristics of the impedance regulator 4：Side has
6 anode plugs, opposite side have 6 cathode plugs, in grid-connected power station improved, process, by 6 group connection in series-parallel form 1 every
Section, wherein each group string includes 5 components of series connection；First module is assembled afterwards, first the anode 11 that confluxes mounted in unit
Front end, the anode 11 that confluxes have 6 anode plugs, and the positive pole with 6 group strings of the 1st compartment is connected respectively, the 1st compartment
The negative poles of 6 group strings be connected with 6 cathode plugs of the 1st side of impedance regulator 4；1st impedance regulator 4 is another
Positive pole of 6 anode plugs of side again with 6 group strings of the 2nd compartment is connected；The negative pole of 6 group strings of the 2nd compartment with
6 cathode plugs connection of 2nd side of impedance regulator 4；6 anode plugs of the 2nd opposite side of impedance regulator 4
The positive pole with 6 group strings of the 3rd compartment is connected again；By that analogy；The function of wherein impedance regulator 4 is between adjacent compartment
Play a part of parallel circuit or series circuit is connected；Wherein, when the first module installs enough 6 compartments and 5 impedances
During adjuster 4, the negative pole of 6 group strings of the 6th compartment is connected with 6 cathode plugs of the negative electrode 10 that confluxes, it is single to complete first
The repacking program of member；The first module shares 6 compartments, has 5 components 6 group connection in series-parallel of series connection in each compartment
Circuit, the rated voltage of each compartment is 150V, rated current 52.056A, and the potential resistance of compartment is 2.88 Ω.
The rated current for wherein organizing string is 8.676A, rated voltage 900V.
The remodeling method in the grid-connected power station of described novel photovoltaic, wherein：Also include second procedure：Including：According to assembling
The same method of the first module, 6 identical units altogether are copied according to priority alignment sequence, it is first single wherein first
Member, second unit first subunit into three-in-one with each compartment Components Parallel Connection of third unit, then Unit the 4th, Unit the 5th
The second into three-in-one subunit with each compartment Components Parallel Connection of Unit the 6th, now, two respective rated voltages of subunit are
900V, rated current are electric current 156.168A, 5.77 Ω of potential resistance；Two three-in-one subunits are connected into one afterwards
Individual generating square formation system, wherein 6 negative electrodes that conflux are linked together, referred to as generating square formation system negative pole DC bus, by 6 remittances
Stream anode links together, referred to as generating square formation system positive pole DC bus, the power supply exported by this two buses, its specified electricity
It is 2.88 Ω to press as 900V, rated current 312.33A, the potential resistance of system；The potential resistance of the generating square formation system and
Group get lines crossed road composition compartment potential resistance value it is equal, be 2.88 Ω；Photovoltaic plant reactive voltage harmonic is changed and locked
In the range of 0.33%, it is 99% to realize theoretical maximum power output.
The remodeling method in the grid-connected power station of described novel photovoltaic, wherein：Also include the 3rd flow：Including：By four generatings
Square formation system assembles are got up, first by the first generating square formation and the second generating square formation with positive pole and positive pole, negative pole and negative pole and
Connection mode is merged into First 500KW inverters and specializes in power supply；Again by the 3rd bill square formation and the 4th generating square formation with negative pole with
The parallel way of negative pole, positive pole and positive pole is merged into second 500KW inverter and specializes in power supply；Two inverters after merging are each
From input direct voltage be unified for 900V, equal input maximum current is 624A, and the potential resistance value of its power supply is identical, is
1.44Ω。
The modification method in the grid-connected power station of described novel photovoltaic, wherein：Each generating side in grid-connected power station after the improvement
Battle array includes 12 units in parallel, and each unit includes the compartment of 4 series connection；The potential resistance of the square formation is 0.96 Ω.
The modification method in the grid-connected power station of described novel photovoltaic, wherein：In solar energy power generating impedance regulating
Conflux described in being carried out before one unit installation broadband 9 and the connection of the silicon controlled module 5；Specifically include：Disconnect and connecting
Contact pin 6, make the silicon controlled module forward direction 2 of impedance regulator 4 and silicon controlled module reverse 3 disconnected from each other；When confluxing for the unit
Negative electrode 10 and the anode 11 that confluxes install it is complete after, then connection sheet 6 connected into fastening；The effect of described connection sheet 6 is will be controllable
Silicon module forward direction 2 and reverse 3 connection of silicon controlled module；The effect of described insulation cut-off 7 is will conflux broadband 9 and controllable silicon mould
Block 5 is isolated.
Using the beneficial effects of the present invention are：
The 1st, the non-constant current of photovoltaic plant, non-voltage-stabilized power supply are changed into the power supply of non-constant current and voltage stabilizing, the specific targets of voltage stabilizing reach
To 98.4%.
2nd, by the grid-connected installation fulfilling rate in China, 97.9% is brought up to by Yuanping City equal 78.9%, rises 19% on year-on-year basis.
3rd, by the grid-connected quality of power supply in China, within original universal 35.7%, 97.9% is brought up to, year-on-year electricity quality
Rise 62.2%.
Instant invention overcomes reactive voltage flickering, cause voluntarily the cutting off of inversion, high pressure aerial drainage, low pressure off-the-line, public frequency dirty
The potential safety hazards such as dye, it is ensured that the operation security of national grid.
Brief description of the drawings
Fig. 1 is the structural representation of solar energy power generating impedance regulator device of the present invention；
Fig. 2 is the first way layout structure schematic diagram of the generating square formation system of pv grid-connected plant of the present invention；
Fig. 3 is pv grid-connected plant system structure diagram of the present invention；
Fig. 4 is pv grid-connected plant systematic difference example of the present invention；
Fig. 5 is grid integration device structural representation of the present invention；
Fig. 6 is the second way layout structure schematic diagram of the generating square formation system of pv grid-connected plant of the present invention.
Embodiment
The structure and the course of work of the present invention are described in detail below in conjunction with the accompanying drawings.
Embodiment 1
As shown in figure 1, Fig. 1 is the structural representation of solar energy power generating impedance regulator device of the present invention.
Solar energy power generating impedance regulating includes：Shell 1, the impedance regulator in the inner chamber of shell 1
4th, connection sheet 6, insulation cut-off 7, impedance regulator mounting hole 8, conflux negative electrode 10 and the anode 11 that confluxes；Wherein, impedance regulator 4
Including silicon controlled module 5, the silicon controlled module 5 includes silicon controlled module forward direction 2 and silicon controlled module reverse 3, described controllable
Silicon module forward direction 2 is the defeated of the silicon controlled module 5 for input, the silicon controlled module reverse 3 of the silicon controlled module 5
Go out end；Impedance regulator 4 can also include broadband 9 of confluxing, and described broadband 9 of confluxing provides access path, by silicon controlled module 5
In silicon controlled module reverse 3 link together.The compartment 7 that wherein insulate provides heatproof insulation cut-off, for by silicon controlled module
Forward direction 2 and silicon controlled module reverse 3 are isolated；The insulation compartment 7 can be also used for silicon controlled module 5 and broadband phase of confluxing
Isolation.
The solar energy power generating impedance regulating also includes gap bridge radiator, and it is that silicon controlled module heat transfer is attached
Part.
The negative electrode 10 that confluxes includes 6 male plugs, 6 male plugs and long 25cm, wide 3cm, thick 0.25cm
Copper coin broadband is middle by plastic packaging after welding together, and both ends are exposed as the outer contact of the negative electrode that confluxes；The anode 11 that confluxes wraps
6 parent form plugs are included, 6 parent form plugs and long 25cm, wide 3cm, thick 0.25cm copper coin broadband are welded together among rear
By plastic packaging, and both ends are exposed as the outer contact of the anode that confluxes；The impedance regulator 4 includes the controllable silicon that rated current is 800A
Module 5 and the broadband 9 of confluxing that rated current is 800A；The side of impedance regulator 4 is by 6 parent form plugs and silicon controlled module
Reverse 3 weld together, opposite side is welded together by 6 male plugs and silicon controlled module forward direction 2.
The negative electrode 10 that confluxes, the 4 three kinds of elements of anode 11 and impedance regulator that conflux complement one another, and major function is as follows：
Conflux negative electrode 10, the anode 11 that confluxes is combined into one within generator unit as double wave rectifier, the positive and negative electricity of its respective institute's band
Pole is the safety guard for preventing high pressure aerial drainage from inversely striking back.Power supply i.e. through conflux negative electrode 10 and the output of anode 11 of confluxing,
It is through the rectified safety power supply for preventing from flowing backwards of double wave.
As shown in Fig. 2 the first way layout structure that Fig. 2 is the generating square formation system of pv grid-connected plant of the present invention shows
It is intended to.
The generating square formation includes solar energy power generating impedance regulating, the solar energy power generating impedance regulation
Device includes conflux negative electrode 10, impedance regulator 4 and 11 3 support bodies of anode that conflux according to succession, and three support bodies are in photovoltaic
Group, which is being got lines crossed, forms one group in road；One unit of pv grid-connected plant includes multigroup solar energy power generating impedance regulating,
Wherein, the silicon controlled module of the conflux negative electrode 10 and its impedance regulator 4 of first group of solar energy power generating impedance regulating
Reverse 3 link together, and turn into the negative pole of a unit；The anode that confluxes of another group of solar energy power generating impedance regulating
11 link together with the silicon controlled module forward direction 2 of its impedance regulator 4, turn into the positive pole of a unit.
In Fig. 2, icon 12 represents first module, including the negative electrode 10 that confluxes, the anode 11 that confluxes, positioned at the moon that confluxes
6 compartments between pole 10 and the anode 11 that confluxes and 5 impedance regulators 4 between 6 compartments；Icon 13 represents the
Unit two, including the negative electrode 10 that confluxes, the anode 11 that confluxes, positioned at 6 to conflux between negative electrode 10 and the anode 11 that confluxes
Compartment and 5 impedance regulators 4 between 6 compartments；Icon 14 represents third unit, including the negative electrode that confluxes
10, the anode 11 that confluxes, positioned at 6 compartments to conflux between negative electrode 10 and the anode 11 that confluxes and between 6 compartments
5 impedance regulators 4；Icon 15 represents Unit the 4th, including the negative electrode 10 that confluxes, the anode 11 that confluxes, positioned at remittance
Flow 6 compartments between negative electrode 10 and the anode 11 that confluxes and 5 impedance regulators 4 between 6 compartments；The table of icon 16
Show Unit the 5th, including the negative electrode 10 that confluxes, the anode 11 that confluxes, positioned at confluxing between negative electrode 10 and the anode 11 that confluxes
6 compartments and 5 impedance regulators 4 between 6 compartments；Icon 17 represents Unit the 6th, including the moon that confluxes
Pole 10, the anode 11 that confluxes, positioned at 6 compartments to conflux between negative electrode 10 and the anode 11 that confluxes and positioned at 6 compartments it
Between 5 impedance regulators 4.
Wherein every 1 compartment includes 6 group connection in series-parallel, and each group string includes 5 component series connection.
Component therein represents solar photovoltaic assembly, also referred to as solar panel, including single solar cell, the sun
The effect of energy battery component is to convert solar energy into electrical energy, or is sent in battery and stores, or promotes loaded work piece.
Icon 18 represents the 1st compartment in 6 compartments of Unit the 1st；Icon 19 represents impedance regulator 4；The table of icon 20
Show the 2nd compartment of Unit the 1st；By that analogy, icon 21 represents the 4th compartment of Unit the 1st；Icon 23 represents the 6th of Unit the 1st
Compartment；Icon 26 represents the 6th compartment of Unit the 6th.
Icon 22, representing that Unit the 1st, Unit the 2nd and Unit the 3rd are in parallel turns into the 1st subunit, Unit the 4th, Unit the 5th
Turn into the 2nd subunit with the parallel connection of Unit the 6th, the first subunit and the 2nd subunit are in parallel again afterwards.
Icon 24 represents that the negative electrode 11 that confluxes of 6 units is connected to become negative pole bus bar, referred to as generating square formation
Negative electrode bus；Icon 25 represents that the anode 10 that confluxes of 6 units is connected to become positive pole bus bar, referred to as generating square formation
Positive electrode bus；One generating square formation is made up of 6 units, operating current 312.336A operating voltages 900V, potential resistance 2.88
Ω。
As shown in figure 3, Fig. 3 is pv grid-connected plant system structure diagram of the present invention；.
The pv grid-connected plant system includes 4 generating square formation systems.
In Fig. 3, label 27 represents the 1st generating square formation, operating current（That is rated current）312.336A, operating voltage（I.e.
Rated voltage）900V, its potential resistance（That is internal resistance）2.88Ω；Label 28 represents the 2nd generating square formation, operating current
312.336A, operating voltage 900V, the Ω of potential resistance 2.88.The negative pole of 1st generating square formation and the 2nd generating square formation the two square formations
Bus and negative pole mother are connected in parallel, positive electrode bus and positive electrode bus are connected in parallel, and form 624A, 900V, potential resistance
1.44 Ω power supply, it specializes in power supply as First 500KW inverters；Label 29 represents the 3rd generating square formation, operating current
312.336A, operating voltage 900V, its potential Ω of resistance 2.88；Label 30 is expressed as the 4th generating square formation, operating current
312.336A, operating voltage 900V, the Ω of potential resistance 2.88.The negative pole of 3rd generating square formation and the 4th generating square formation the two square formations
Bus and negative electrode bus merge, positive electrode bus and positive electrode bus parallel connection together, form 624A, 900V, potential resistance
1.44 Ω power supply, turn into second 500KW inverter and specialize in power supply.
In actual use, First 500KW inverters can be specialized in power supply and second 500KW inverter specializes in power supply
It is used in parallel or in series, to obtain the rated voltage, rated current, rated resistance and the rated power that need.
In other words, in Fig. 3, the rated current of the 1st generating square formation system is 312.336A, rated voltage is 900V voltages,
Contain the potential Ω of resistance 2.88 of system；Rated current 312.336A, the rated voltage 900V of 2nd generating square formation system, contain
The potential Ω of resistance 2.88 of system；The bus of 1st and the 2nd generating square formation system is that negative electrode bus is in parallel with negative electrode bus, positive pole
Bus is in parallel with positive electrode bus, and turn into First 500KW inverters specializes in power supply, and the rated current of the power supply is 624A, volume
It is 900V to determine voltage, and the potential resistance of power supply is 1.44 Ω；The rated current of 3rd generating square formation system is 312.336A, specified electricity
Press as 900V voltages, contain the potential Ω of resistance 2.88 of system；Rated current 312.336A, the specified electricity of 4th generating square formation system
Press as 900V, contain the potential Ω of resistance 2.88 of system；The bus of 3rd and the 4th generating square formation system be negative pole it is in parallel with negative pole,
Positive pole is in parallel with positive pole, and turn into second 500KW inverter specializes in power supply, and the rated current of the power supply is 624A, specified electricity
It is 1.44 Ω to press as 900V, the potential resistance of power supply.
As shown in figure 4, Fig. 4 is the application example of pv grid-connected plant of the present invention.
The pv grid-connected plant of the present invention can apply the various aspects in production and living.By power distribution cabinet and transformer station
Transformer is carried out after suitably changing, and pv grid-connected plant of the invention provides electric power and can apply to different occasions.
In Fig. 4, label 1 represents the potential Ω of resistance 1.44 of 624A, 900V the 1st photovoltaic electricity generating array；Label 2 represents
The potential Ω of resistance 1.44 of 624A, 900V the 2nd photovoltaic electricity generating array；Label 3 represents First 500KW photovoltaic combining inverters；
Label 4 represents second photovoltaic combining inverter；Label 5 represents intelligent electric meter power distribution cabinet all-in-one；Label 6 represents 380V boostings
600KV is connected to the grid；Label 7 represents screen office；Label 8 represents hand-set digit management and control；Label 9 represents that the 220V that generates power for their own use is mono-
Phase power supply.
As shown in figure 5, Fig. 5 is grid integration device structural representation of the present invention.
The parallel networking type solar photovoltaic electricity generation system of the present invention is to convert solar energy into direct current using solar photovoltaic component
Electric energy, then by inverter by DC inverter into frequency, same to phase, equal voltage AC.The output end of inverter by with
Electric cabinet is in parallel with the step-down side in electric substation, and power network is sent into by transformer to load supplying, and by unnecessary electric energy.
In addition, as Figure 1-3, the assembling process of pv grid-connected plant of the present invention is as follows
Before a unit installation of solar energy power generating impedance regulating carry out described in conflux broadband 9 with
The connection of the silicon controlled module 5；Specifically include：Piece 6 is disconnected, makes the silicon controlled module forward direction 2 and can of impedance regulator 4
It is disconnected from each other to control silicon module reverse 3；Conflux negative electrode 10 and after the anode 11 that confluxes installs complete when the unit, then by connection sheet 6
Connection fastening；The effect of described insulation cut-off 7 is by reverse 3 isolation of silicon controlled module forward direction 2 and silicon controlled module；Described
The effect of connection sheet 6 is by reverse 3 connection of silicon controlled module forward direction 2 and silicon controlled module；Described insulation cut-off 7 can also have
The broadband 9 that plays the role of to conflux isolates with silicon controlled module 5.
1 unit includes 6 compartments of identical, is connected between 6 compartments by 5 impedance regulators 4,
Every 1 compartment in 6 compartments includes 6 group strings；The 1st impedance regulator 4 in 5 impedance regulators 4
Side be connected by 6 plugs with the negative pole of 6 group strings of the 1st compartment, 6 that opposite side passes through 6 plugs and the 2nd compartment
The positive pole connection of group string；The side of the 2nd impedance regulator 4 in 5 impedance regulators 4 by 6 plugs and the 2nd every
The negative pole connection of 6 group strings of section, opposite side are connected by 6 plugs with the positive pole of 6 group strings of the 3rd compartment；5 resistances
The side of the 3rd impedance regulator 4 in anti-adjuster 4 is connected with the negative pole of 6 group strings of the 3rd compartment by 6 plugs, is another
Side is connected by 6 plugs with the positive pole of 6 group strings of the 4th compartment；The 4th impedance in 5 impedance regulators 4 is adjusted
The side of section device 4 is connected by 6 plugs with the negative pole of 6 group strings of the 4th compartment, opposite side passes through 6 plugs and the 5th compartment
6 group strings positive pole connection；The side of the 5th impedance regulator 4 in 5 impedance regulators 4 by 6 plugs with
The negative pole connection of 6 group strings of the 5th compartment, opposite side are connected by 6 plugs with the positive pole of 6 group strings of the 6th compartment；It is described
The positive pole of 6 group strings of the 1st compartment is connected with the anode 11 that confluxes of solar energy power generating impedance regulating, the described 6th
The negative pole of 6 group strings of compartment is connected with the negative electrode 10 that confluxes of solar energy power generating impedance regulating.
The 1st subunit will be connected in parallel into mutually isostructural Unit the 1st, Unit the 2nd and Unit the 3rd, will be with phase
Isostructural Unit the 4th, Unit the 5th and Unit the 6th are connected in parallel into the 2nd subunit；It is afterwards that the 1st subunit is sub- single with the 2nd
Member is connected in parallel；The anode that confluxes of described 1--6 units one end is connected to become positive electrode bus, described by bus bar
The negative electrode that confluxes of the 1--6 unit other ends is connected to become negative electrode bus by bus bar；Wherein, the 1st subunit and the 2nd Asia
Unit form generating square formation system, the generating square formation positive and negative electrode bus output rated current be 312.336A, rated voltage be
900V, and the potential resistance value of system is 2.88 Ω.
Former rated current by three Optimizing Flows is 8.676A by the improvement of the pv grid-connected plant, rated voltage is
The potential resistance of 900V power supply is regulated and controled to 1.44 Ω by 103.7 Ω, by the potential resistance value of power supply be limited in 0.55≤R≤
In the range of 1.82 permissible value, form two rated voltage, rated current factors fixed than relation, make data of voltage reduction etc.
Electric current increase is same as, peer switch can be turned into by making between electric current and voltage keeps power constant all the time, makes the idle of electricity generation system
Scope of the voltage lockout 0.16%, effective operating voltage realize non-permanent and voltage stabilizing purpose up to 99.84% end value.
First pass：As shown in figure 1, the unique characteristics according to the impedance regulator 4：Side have 6 anode plugs,
Opposite side has 6 cathode plugs, by rated current is 8.676A in traditional power station improved, process, rated voltage 900V
6 group connection in series-parallel form 1 compartment, wherein each group string includes 5 components and connected.Unit the 1st is assembled afterwards, first remittance
The front end that anode 11 is mounted in unit is flowed, the anode 11 that confluxes has 6 anode plugs, respectively with 6 group strings of the 1st compartment just
Pole is connected, and the negative pole of 6 group strings of the 1st compartment is connected with 6 cathode plugs of the 1st side of impedance regulator 4；It is described
Positive pole of 6 anode plugs of the 1st opposite side of impedance regulator 4 again with 6 group strings of the 2nd compartment is connected；2nd compartment
The negative poles of 6 group strings be connected with 6 cathode plugs of the 2nd side of impedance regulator 4；2nd impedance regulator 4 is another
Positive pole of 6 anode plugs of side again with 6 group strings of the 3rd compartment is connected；By that analogy.The wherein work(of impedance regulator 4
Can play a part of parallel circuit between adjacent compartment or series circuit is connected.When enough 6 of Unit the 1st installation every
When section and 5 impedance regulators 4, the negative pole of 6 group strings of the 6th compartment is connected with 6 cathode plugs of the negative electrode 10 that confluxes,
Complete the repacking program of first module；Unit the 1st shares 6 compartments, has 6 group strings in parallel in each compartment,
There are the components of 5 series connection, the rated voltage of each compartment is 150V, rated current 52.056A, compartment in each group string
Potential resistance be 2.88 Ω.
Each of which component is solar energy power generating unit, and every 5 components connect to form a component；Every six components
Parallel connection forms a compartment.
Second procedure：According to the method same with assembling Unit the 1st, 6 altogether are copied according to priority alignment sequence
Identical unit, shown in reference picture 2, first wherein Unit the 1st, Unit the 2nd and each compartment Components Parallel Connection of Unit the 3rd into three-in-one
The 1st subunit, then Unit the 4th, Unit the 5th and each compartment Components Parallel Connection of Unit the 6th into the 2nd three-in-one subunit, this
When, two respective rated voltages of subunit are 900V, rated current is electric current 156.168A, 5.77 Ω of potential resistance；It
Two three-in-one subunits are connected into a generating square formation system afterwards, wherein 6 negative electrodes that conflux are linked together, are referred to as
Generating square formation system negative pole DC bus, 6 anodes that conflux are linked together, referred to as generating square formation system positive pole DC bus, by
The power supply that this two buses are exported, its rated voltage is 900V, rated current 312.33A, and the potential resistance of system is 2.88
Ω.The potential resistance and group of the generating square formation system get lines crossed road potential resistance value it is equal, be 2.88 Ω；By photovoltaic plant
The change of reactive voltage harmonic is locked in the range of 0.33%, and it is 99% to realize peak power output.
5.77 Ω of the potential resistance of the 1st subunit, resistance is bigger than normal, and 1 megawatt power station one day will lack the Ω of generated energy 5.77
× 156.158A=43 kilowatt, it is necessary to according to the icon 22 described in Fig. 2, for bus at grid connection two, make two three-in-one big
Unit is changed into a generating square formation.Described icon 24, it is that dotted line represents 6 bus bars as negative pole, referred to as generating square formation is born
Pole DC bus；Described icon 25, it is that solid line represents 6 bus bars as positive pole, referred to as generating square formation positive pole DC bus, this two
Power supply where bar bus, voltage 900V electric current 312.33A, the potential Ω of resistance 2.88 of square formation, the potential resistance of power station square formation with
The group potential resistance value in road of getting lines crossed is unified, equal when being 2.88 Ω specific data, becomes photovoltaic plant reactive voltage harmonic
Change, be locked in 0.33% very low range, the only in this way theoretical installation of photovoltaic plant could realize 99% peak power output.
3rd flow：The distribution principle of 3 inverters access circuit referring to the drawings, among new pv grid-connected plant, 1
Megawatt power station be usually by 500KW two inverter paired runnings, 1,000,000 ten thousand installation at least the four of 250KW square formations,
Circuit diagram shown in Fig. 3, it is the 1st square formation and the 2nd square formation, with positive pole and the multiple process of positive pole, negative pole and negative pole, by the 1st side
Battle array merges with the 2nd square formation；Cheng Yitai 500KW inverters specialize in power supply；3rd square formation and the 4th square formation be negative pole and negative pole,
Positive pole is in parallel with positive pole, and three square formations are merged with square array, turns into second 500KW inverter and specializes in power supply.Now
Two respective input direct voltages of inverter are unified for 900V, and equal input maximum current is 624A, and its electricity generation system is dived
It is all mutually 1.44 Ω in resistance value.
It is the potential resistance traditional power station 103.7 Ω of original to have passed through three flows, is regulated to 1.44 Ω potential resistance,
Final regulation and control overcomes resistance exceeded the problem of causing electric current voluntarily to fail in the permissible value scope of 0.55≤R≤1.82 from this,
Reactive voltage only accounts for 0.16% ratio of 900V setting data, and effective operating voltage is ensured 98.4%, except inversion consumption, installation
It is 97% to realize maximum power point.
Table 2 is that the experiment innovated technologies with conventional art of pv grid-connected plant of the present invention compares.
Table 2：The experiment that the present invention innovates technologies with conventional art compares
By contrast, the grid-connected electric power station system of novel photovoltaic provided by the invention significantly improves compared to conventional art
Section production capacity, improves working efficiency.The technical contribution of the present invention is to find optimal fulcrum in huge numeric field, so as to solve
The non-permanent and international technology problem of voltage stabilizing, by theoretical installation fulfilling rate and and network electric energy quality synchronously mention 97% historical high
Ratio thoroughly solves the potential safety hazard that empty lighting becomes.
Embodiment 2
The present embodiment provides the layout structure of another generating square formation system, and it can provide different potential resistance.Such as
Shown in Fig. 6, Fig. 6 is the second way layout structure schematic diagram of the generating square formation system of pv grid-connected plant of the present invention.
Generating square formation system shown in Fig. 6 is with the generating square formation system difference shown in Fig. 2：Including 12 lists
Member, and each unit includes 4 compartments.
As shown in fig. 6, shown generating square formation system includes 12 generator units altogether, wherein each unit confluxes including one
Negative electrode, the anode that confluxes, 3 positioned at 4 compartments to conflux between negative electrode and the anode that confluxes and between 4 compartments
Impedance regulator.The structure of each compartment is in the same manner as in Example 1, includes 5 including 6 group connection in series-parallel, each group string
Component is connected.
Specifically：1 unit includes 4 compartments of identical, is adjusted between 4 compartments by 3 impedances
Device is connected, and every 1 compartment in 4 compartments includes 6 group strings in parallel；The 1st in 3 impedance regulators
The side of individual impedance regulator is connected by 6 plugs with the negative pole of 6 group strings of the 1st compartment, opposite side by 6 plugs with
The positive pole connection of 6 group strings of the 2nd compartment；The side of the 2nd impedance regulator in 3 impedance regulators passes through 6
Plug is connected with the negative pole of 6 group strings of the 2nd compartment, opposite side is connected by the positive pole of 6 plugs and 6 group strings of the 3rd compartment
Connect；The side of the 3rd impedance regulator in 3 impedance regulators passes through 6 group strings of 6 plugs and the 3rd compartment
Negative pole connection, opposite side are connected by 6 plugs with the positive pole of 6 group strings of the 4th compartment；6 group strings of the 1st compartment
Positive pole is connected with the anode that confluxes of solar energy power generating impedance regulating, the negative pole of 6 group strings of the 4th compartment with
The negative electrode that confluxes of solar energy power generating impedance regulating is connected.
Wherein, the rated voltage of each compartment be 150V, rated current 52.056A, the potential resistance of compartment is 2.88
Ω.The rated voltage of each unit is 600V, rated current 52.056A, and the potential resistance of unit is：11.52Ω.
The assembling process of the electricity generation system also includes：First wherein Unit the 1st, Unit the 2nd and each compartment portion of Unit the 3rd
Part is simultaneously unified into the 1st three-in-one subunit, then Unit the 4th, Unit the 5th and each compartment Components Parallel Connection of Unit the 6th into three-in-one
The 2nd subunit, then Unit the 7th, unit 8 and each compartment Components Parallel Connection of Unit the 9th into the 3rd three-in-one subunit,
Finally Unit the 10th, Unit the 11st and each compartment Components Parallel Connection of Unit the 12nd into the 4th three-in-one subunit；Now, four
The respective rated voltage of subunit is 600V, rated current 156.168A, and potential resistance is 3.83 Ω；
Four three-in-one subunits are connected into a generating square formation system afterwards, wherein 12 negative electrodes that conflux are connected
Together, referred to as generating square formation system negative pole DC bus, 12 anodes that conflux are linked together, and referred to as generating square formation system is being just
Pole DC bus, the power supply exported by this two buses, its rated voltage is 600V, rated current 624.672A, and system is dived
It is 0.9575 Ω in resistance.The potential resistance and group of the generating square formation system are being got lines crossed the potential resistance value on road.
The invention provides a kind of new pv grid-connected plant and the method for forming it, is by M potential resistance
A unit is formed after 2.88 Ω compartment series connection, then N number of identical unit is carried out in parallel, the generating square formation finally obtained
The potential resistance of system is：(2.88×M)/N；Wherein each compartment includes 6 group strings in parallel, and each group string includes 5 strings
The component of connection, component can be solar battery sheet, and it mainly includes crystal silicon cell.Also, as M=N=6, generating square formation
The potential resistance and group of system get lines crossed road composition compartment potential resistance value it is equal, be 2.88 Ω, now by photovoltaic plant without
The change of work(voltage harmonic is locked in the range of 0.33%, and realization theory peak power output is 99%.Furthermore, it is possible to according to not
Same demand selects different M, N values, to obtain different potential resistance, and then different workplaces is adapted to, when potential electricity
When resistance is in the range of 0.55≤R≤1.82, system is the most stable, more efficient.It is also an option that different solar-electricity
Pond piece, different compartment resistance are obtained, and then obtain different system resistances as needed.
This invention major technique core, is exactly the management and control to the potential resistance value of electricity generation system, the effect of photovoltaic plant is adopted
Take data command；The specific content of the invention instructs including data software, two parts of impedance regulator hardware support.Data software refers to
Order is with electricity generation system, and the permissible value that potential resistance must not exceed 0.55≤R≤1.82 is technology premise, with electric current, voltage, electricity
Between resistance as：The relation of object --- lever --- fulcrum is opto-electronic conversion general principle, by resistance delimit 0.55≤R≤
Within 1.82 section, make rated voltage, it is fixed than relation that rated current is formed, and connects the direct ratio between two factors and inverse ratio value
Near is " 1 ", the low grade of voltage drop is increased in electric current, turns into peer switch and keeps power constant all the time.
Described impedance regulator device, in addition to：Conflux anode, the negative electrode that confluxes, impedance regulator totally three kinds of phase interworkings
The element of set, the major function of element：Anode and the negative electrode that confluxes conflux in generator unit, it is combined into one as double wave rectification
Device, each institute's band positive and negative electrode, is the safety guard for preventing high pressure aerial drainage from inversely striking back.
Component was arbitrarily connected into high voltage originally, then gone again contour by the grid-connected power station of novel photovoltaic of the present invention, change
Pressure concentrates the wiring process confluxed, and correct for running counter to the Problem-Error of ohm law despite resistance in the prior art, solves
With the implications of the grid-connected program in inverter rear end of rear end.
The grid-connected power station of novel photovoltaic of the present invention, specifically：It is according to " electrostatic ternary normality is fixed than superposition principle "
Great discovery, to correct the Problem-Error of conventional art, the pv grid-connected plant array wiring issue that refers exclusively to here.Photovoltaic group
The manufacture craft of part is that two silicon wafer cell pieces are cascaded, and in general subassembly product, which is formed, allows the efficiency of silicon wafer cell piece
Decline 2.7%, the component of more than 20 within 30 has been connected again in the construction of photovoltaic plant, formed equipressure and conflux
Group string, this Technical behaviour is exactly the method for running counter to Ohm's law despite potential resistance, the potential resistance of electricity generation system with
It is directly proportional all the time to set operating voltage, is inversely proportional with unit rated current, the potential bigger efficiency of resistance value existing for electricity generation system
Lower, this is the artificial irresistible natural law, either mechanical energy generating or photovoltaic generation, and the potential resistance of electric field is not
Must be more than the permissible value scope of 0.55≤R≤1.82, during beyond the permissible value scope of maximum 1.82, whenever increasing by 1 Ohmic resistance, its
The rated current output of circuit, will voluntarily be failed, potential resistance existing for electricity generation system is 100 Europe with 1.82% specified ratio
Nurse, the reactive voltage of system just have 100V, and in reactive voltage 100V photovoltaic generating system, load is often owed when doing work（Ampere）
Electric current will form 100V（Volt）Decompression, 1000V voltage must be declined by owing 10A electric currents, will under the situation seriously to overload
There is the change of zero energy, this theorem is exactly that photovoltaic plant is contributed just to cause alone and is significantly depressured, flickering evidence really.
It is described above to be merely exemplary for the purpose of the present invention, and it is nonrestrictive, and those of ordinary skill in the art understand,
In the case where not departing from the spirit and scope that claim is limited, many modifications, change or equivalent can be made, but will all fall
Enter within protection scope of the present invention.
Claims (9)
1. a kind of modification method of pv grid-connected plant, this method carries out power station using solar energy power generating impedance regulating
The regulation of potential resistance, wherein the solar energy power generating impedance regulating includes：Shell（1）, installed in shell（1）'s
Impedance regulator in inner chamber（4）, connection sheet（6）, fin, insulation cut-off（7）, impedance regulator mounting hole（8）, conflux the moon
Pole（10）With the anode that confluxes（11）；It is characterized in that：The impedance regulator（4）Including silicon controlled module（5）With broadband of confluxing
（9）；The silicon controlled module（5）It is positive including silicon controlled module（2）It is reverse with silicon controlled module（3）, the silicon controlled module
（5）Input it is positive for silicon controlled module（2）, output end be silicon controlled module it is reverse（3）；Described fin is fixed on can
Control silicon module（5）Plane；The connection sheet（6）By silicon controlled module（5）With broadband of confluxing（9）After connection, the impedance is adjusted
Save device（4）Fixed feet be fixed by screws in shell（1）It is interior, and broadband of confluxing（9）Adjusted for impedance at the fixed feet both ends of connection
Tie point is provided between regulating device；The solar energy power generating impedance regulating includes the negative electrode that confluxes according to succession
（10）, impedance regulator（4）With the anode that confluxes（11）Three support bodies, three support bodies form one group in photovoltaic group string circuit；
When being applied in pv grid-connected plant, a unit in the power station includes multigroup solar energy power generating impedance regulating, its
In, the negative electrode that confluxes of first group of solar energy power generating impedance regulating（10）With its impedance regulator（4）Controllable silicon mould
Block is reverse（3）Link together, turn into the negative pole of a unit；Another group of solar energy power generating impedance regulating confluxes
Anode（11）With its impedance regulator（4）Silicon controlled module it is positive（2）Link together, turn into the positive pole of a unit.
2. the modification method of pv grid-connected plant according to claim 1, it is characterised in that：The negative electrode that confluxes（10）Bag
6 male plugs are included, 6 male plugs and long 25cm, wide 3cm, thick 0.25cm copper coin broadband are welded together among rear
By plastic packaging, and both ends are exposed as the outer contact of the negative electrode that confluxes；The anode that confluxes（11）Including 6 parent form plugs, 6 mothers
Type plug and long 25cm, wide 3cm, thick 0.25cm copper coin broadband weld together after among by plastic packaging, and both ends are exposed turns into
The outer contact of the anode that confluxes；Also, the negative electrode that confluxes（10）Turn into a stand-alone assembly after plastic packaging；The anode that confluxes
（11）Turn into a stand-alone assembly after plastic packaging.
3. the modification method of pv grid-connected plant according to claim 1, it is characterised in that：The impedance regulator（4）
Including the silicon controlled module that rated current is 800A（5）With the broadband of confluxing that rated current is 800A（9）；The impedance regulator
（4）Side is reverse by 6 parent form plugs and silicon controlled module（3）Weld together, opposite side is by 6 male plugs and controllable silicon
Module is positive（2）Weld together；
Described shell（1）It is made of the resistance to fire-resistant engineering plastics of high temperature resistant, is strip structure；Described shell（1）Interior one
While by 6 group string positive pole plug connectors and silicon controlled module（5）Link together, another side is thick by long 25cm, wide 3.2cm
Abreast weld 6 negative pole connectors in 0.4cm broadband of confluxing.
4. the modification method of pv grid-connected plant according to claim 1, it is characterised in that：Adjusted using the modification method
The potential resistance value in power station afterwards is located in the range of the Ω of 0.55 Ω≤R≤1.82.
5. the modification method of pv grid-connected plant according to claim 1, it is characterised in that：Hindered in solar energy power generating
Conflux described in carrying out before one unit installation of anti-adjusting means broadband（9）With the silicon controlled module（5）Connection；
Specifically include：Disconnect piece（6）, make impedance regulator（4）Silicon controlled module it is positive（2）It is reverse with silicon controlled module（3）
It is disconnected from each other；When the negative electrode that confluxes of the unit（10）With the anode that confluxes（11）Install it is complete after, then by connection sheet（6）Connection is tight
Gu；Described connection sheet（6）Effect be that silicon controlled module is positive（2）It is reverse with silicon controlled module（3）Connection；Described is exhausted
Edge separates（7）Effect be by broadband of confluxing（9）With silicon controlled module（5）Isolation；Through the negative electrode that confluxes（10）With the anode that confluxes
（11）The power supply of output, it is through the rectified safety power supply for preventing from flowing backwards of double wave.
6. the modification method of pv grid-connected plant according to claim 1, it is characterised in that：The impedance regulator（4）
Application pass through the improvement that three flows complete traditional power station：Wherein, first pass includes：According to the impedance regulator（4）
Unique characteristics：Side with 6 anode plugs, opposite side with 6 cathode plugs, in grid-connected power station improved, process, by 6
Individual group of connection in series-parallel forms 1 compartment, wherein each group string includes 5 components of series connection；First module is assembled afterwards, first remittance
Flow anode（11）Mounted in the front end of unit, conflux anode（11）With 6 anode plugs, respectively with 6 group strings of the 1st compartment
Positive pole connection, the negative pole of 6 group strings of the 1st compartment and the 1st impedance regulator（4）6 cathode plugs of side connect
Connect；1st impedance regulator（4）Positive pole of 6 anode plugs of opposite side again with 6 group strings of the 2nd compartment is connected；Institute
State the negative pole and the 2nd impedance regulator of 6 group strings of the 2nd compartment（4）6 cathode plugs connection of side；2nd resistance
Anti- adjuster（4）Positive pole of 6 anode plugs of opposite side again with 6 group strings of the 3rd compartment is connected；By that analogy；Wherein hinder
Anti- adjuster（4）Function be to play a part of parallel circuit between adjacent compartment or series circuit is connected；Wherein, institute is worked as
State enough 6 compartments of first module installation and 5 impedance regulators（4）When, by the negative pole of 6 group strings of the 6th compartment with confluxing
Negative electrode（10）The connection of 6 cathode plugs, complete the repacking program of first module；The first module shares 6 compartments, each
All there are 5 components 6 group series-parallel circuits of series connection, the rated voltage of each compartment is 150V, rated current in individual compartment
For 52.056A, the potential resistance of compartment is 2.88 Ω.
7. the modification method of pv grid-connected plant according to claim 6, it is characterised in that：Also include second procedure：Bag
Include：According to the method same with assembling the first module, 6 identical units altogether are copied according to priority alignment sequence, first
The first subunit that wherein first module, second unit are into three-in-one with each compartment Components Parallel Connection of third unit, then the 4th
Unit, Unit the 5th and each compartment Components Parallel Connection of Unit the 6th are into the second three-in-one subunit, and now, two subunits are each
Rated voltage be 900V, rated current 156.168A, potential resistance is 5.77 Ω；Afterwards by two three-in-one subunits
A generating square formation system is connected into, wherein 6 negative electrodes that conflux are linked together, referred to as generating square formation system negative pole DC is female
Line, 6 anodes that conflux are linked together, referred to as generating square formation system positive pole DC bus, the electricity exported by this two buses
Source, its rated voltage is 900V, rated current 312.33A, and the potential resistance of system is 2.88 Ω；The generating square formation system
Potential resistance and group get lines crossed road composition compartment potential resistance value it is equal, be 2.88 Ω；Photovoltaic plant reactive voltage is harmonious
Ripple change is locked in the range of 0.33%, and realization theory peak power output is 99%.
8. the modification method of pv grid-connected plant according to claim 7, it is characterised in that：Also include the 3rd flow：Bag
Include：Four generating square formation system assembles are got up, first by the first generating square formation and the second generating square formation with positive pole and positive pole, negative
The parallel way of pole and negative pole is merged into First 500KW inverters and specializes in power supply；The 3rd bill square formation and the 4th are generated electricity again
Square formation is merged into second 500KW inverter with the parallel way of negative pole and negative pole, positive pole and positive pole and specializes in power supply；After merging
Two respective input direct voltages of inverter are unified for 900V, and it is 624A that input maximum current is equal, the potential electricity of its power supply
Resistance is identical, is 1.44 Ω.
9. the modification method of pv grid-connected plant according to claim 7, it is characterised in that：Grid-connected power station after the improvement
In each generating square formation include 12 units in parallel, each unit includes 4 compartments connected；The rated current in the power station
It is 0.9575 Ω for 624.672A, rated voltage 600V, and potential resistance value.
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| CN103138285A (en) * | 2011-12-05 | 2013-06-05 | 武湖月 | Plasma photovoltaic power generation |
| CN104410348A (en) * | 2014-12-01 | 2015-03-11 | 合肥天舟光伏技术有限公司 | Photovoltaic grid power station |
| EP2963761A1 (en) * | 2014-07-02 | 2016-01-06 | Haldor Topsøe A/S | An efficient AC-DC electrical power converting unit configuration |
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| US8058752B2 (en) * | 2009-02-13 | 2011-11-15 | Miasole | Thin-film photovoltaic power element with integrated low-profile high-efficiency DC-DC converter |
| CN101645468A (en) * | 2009-08-28 | 2010-02-10 | 武湖月 | High-efficiency solar photovoltaic battery pack |
| CN202285377U (en) * | 2011-11-07 | 2012-06-27 | 重庆电力高等专科学校 | Regulation type photovoltaic controller based on load impedance |
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| CN103138285A (en) * | 2011-12-05 | 2013-06-05 | 武湖月 | Plasma photovoltaic power generation |
| EP2963761A1 (en) * | 2014-07-02 | 2016-01-06 | Haldor Topsøe A/S | An efficient AC-DC electrical power converting unit configuration |
| CN104410348A (en) * | 2014-12-01 | 2015-03-11 | 合肥天舟光伏技术有限公司 | Photovoltaic grid power station |
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Effective date of registration: 20200413 Address after: 315000 Room 502, No. 13, Lane 148, Beiliu street, Jiangdong District, Ningbo City, Zhejiang Province Patentee after: Xu Libo Address before: 317600, Taizhou City, Zhejiang province Yuhuan County city streets Wong Wong Hom Village (County Mechanical and electrical industry function area) Patentee before: ZHEJIANG SHENGNENG GENERATING Co.,Ltd. |