CN107634573A - One kind is applied to Qinghai-xizang Plateau Region self-adapting solar energy electric power system - Google Patents
One kind is applied to Qinghai-xizang Plateau Region self-adapting solar energy electric power system Download PDFInfo
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- CN107634573A CN107634573A CN201711076590.6A CN201711076590A CN107634573A CN 107634573 A CN107634573 A CN 107634573A CN 201711076590 A CN201711076590 A CN 201711076590A CN 107634573 A CN107634573 A CN 107634573A
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Abstract
The present invention relates to one kind to be applied to Qinghai-xizang Plateau Region self-adapting solar energy electric power system.The system is mainly made up of solar panel, solar charging controller, adjustable Voltage stabilizing module, two quick response grammed switches, voltage sample monitoring modular, microcontroller, output port, distribution box.Voltage sample monitoring modular gathers solar charging controller output end voltage signal, and the feedback signal of microcontroller reading voltage sample monitoring modular carrys out the working condition of decision-making circuit.Whether adjustable Voltage stabilizing module is exported depending on grammed switch state in which, and circuit system integral installation is in distribution box.This electric power system is controlled by intellectual monitoring, the load running of solar power system is reached the purpose of stable safety, while improve the utilization ratio of Qinghai-xizang Plateau Region solar energy.Cost of the present invention is relatively low, and stable and reliable operation, structural principle is simple, and easy for installation, is to be adapted for mount on a kind of nomadic regional solar electric power supply system in Qinghai-Tibet Platean.
Description
Technical field
The present invention relates to one kind to be applied to Qinghai-xizang Plateau Region self-adapting solar energy electric power system, and the system can be realized
The defects of Qinghai-xizang Plateau Region exists to current high-efficiency solar charge controller makes up, and effectively increases Qinghai-Tibet Platean
The stability of regional solar electric power supply system and the utilization rate of solar energy.
Background technology
Solar energy is inexhaustible, nexhaustible clean energy resource.And obtained extensively using solar energy generation technology
Using especially suitable for remote areas without electricity.For example, in China Qinghai-xizang Plateau Region, because geographical environment is special, local portion
Point herdsman lives nomadic life, the reasons such as herdsman is sparsely populated, causes many pastoral areas and remote village can not access power network.Cause
This, solar power generation becomes the main power source in these areas.Qinghai-Tibet illumination aboundresources, year total solar radiation amount
For 5000~8500 megajoules/square metre.Solar panel, charge controller, battery are composition solar power systems
Most basic part, but most of household electrical appliance need 220V alternating current to work, and now system has also needed to
One inverter.With the development of electronic technology, the degree of intelligence more and more higher of solar charging controller, in order to improve to too
The utilization rate of positive energy, some charge controllers are after battery is filled, and solar panel directly participates in exporting, now too
The output voltage of positive energy controller can change with change in radiation intensity, profit of this solar charging controller to solar energy
It is high with rate, but output voltage is unstable, and due to Qinghai-xizang Plateau Region illumination acute variation, the sun is covered as cloud is temporary,
The sun occurs suddenly afterwards, and in Qinghai-xizang Plateau Region, this mutation can cause 12V solar cell panel voltages to rise in 2 ~ 3 seconds
22V or so, cause inverter input voltage that acute variation also occurs, so as to cause inverter overvoltage protection or solar charging automatically controlled
Device overvoltage protection processed, produce load power down or burn load, a series of problems, such as load running is unstable.It is in addition, if straight
Connect and inverter is accessed into batteries, because Qinghai-Tibet sleety weather is more, easily form successive cloudy days, in this case solar energy
Cell panel can not be that battery charges substantially, although inverter output protection, the problems such as due to system own loss,
Battery can be caused to cross to put, cause cell damage.So in order to solve this high efficiency charge controller in Qinghai-xizang Plateau Region
Practicality, the defects of existing to current high-efficiency solar charge controller makes up, and is effectively utilizing the same of solar energy
Shi Tigao stiffness of systems have very high practical value.
The content of the invention
In summary, it is an object of the invention to provide one kind to be applied to Qinghai-xizang Plateau Region self-adapting solar energy power supply system
System.The system is realized using quick response grammed switch applies high speed voltage monitoring module, to the output end electricity of charge controller
Monitored during compacting, be finally reached raising solar electric power supply system stability while solar energy utilization ratio is improved.
The purpose of the present invention is achieved through the following technical solutions：
One kind is applied to Qinghai-xizang Plateau Region self-adapting solar energy electric power system, including：Solar panel group, solar recharging
Controller, batteries, voltage sample monitoring modular, 1# grammed switches, microcontroller, 2# grammed switches, adjustable voltage stabilizing mould
Block, inverter and distribution box, the solar panel group outside case pass through the electric power storage outside the solar charging controller and case in case
Pond group connection forms basic solar power system；In solar power system, solar charging controller in case
Output end is connected with the input of voltage sample monitoring modular, the output end of voltage sample monitoring modular and microcontroller it is defeated
Enter end connection, microcontroller output end connects the input of 1# grammed switches and 2# grammed switches respectively, 2# grammed switches
Output end connects adjustable Voltage stabilizing module and accesses inverter input terminal mouth, and 1# grammed switch output ends are directly accessed inverter input
Port.
It is an advantage of the invention that：
1st, the present invention applies high speed voltage monitoring module, and the output end voltage of charge controller is monitored in real time, is rung using quick
The automatic switchover directly exported when voltage stabilizing, low pressure when answering the grammed switch to realize over-pressed, solves existing equipment because intensity of illumination
Acute variation and cause inverter or load input voltage acute variation, cause inverter operating voltage drastically to change, change
It can make inverter overvoltage protection or solar charging controller output protection when acutely, load may be caused to be burned out when serious
The problem of.System oneself power consumption is reduced, effectively improves utilization rate of the electric power system to solar energy.It is finally reached using realization
Solar electric power supply system stability is improved while solar energy utilization ratio is improved.
2nd, cost needed for the present invention is low, and stable performance is easy to maintain, is suitably for some precision instruments of installation in the wild
Equipment provides electric energy, and adjustable voltage can meet the different DC load of various input voltage.
3rd, because Qinghai-xizang Plateau Region solar energy is sufficient, the present invention can be provided for long-term unattended precision load and held
Long electric power energy, save labour.
4th, solve the problems, such as that inverter and solar charging controller are directly connected to, avoid because inverter is directly accessed
Battery, so that battery is not by solar charging controller output protection.
Brief description of the drawings
Fig. 1 is overall structure diagram of the present invention.
Fig. 2 controller for solar output end is with inverter input terminal voltage with the situation of change of solar radiation according to figure.
Embodiment
The solar panel group 1 that the present invention uses is by solar panel（Model TSOLAR200W12V）Composition, battery
Group 3 is by battery（Model PV100-12）Composition, solar charging controller 2（Model SP24V30A）Intelligent charge control
Device processed, its parameters are adjustable；Voltage sample monitoring modular 4 uses Industry Control collection plate（Model YXGC-
SPIAD7606）, 1# grammed switches 5 and 2# grammed switches 7 are used and opened containing the high-power light-coupled isolation DC solid-state relay of two-way
Close module（Omron solid-state relays）, microcontroller 6 be mainly using Cyclone-II series EP2C5Q208C8N as core
The control module of composition, the main reason for selecting the module are that the module working frequency is high and be adapted to do high-speed interface.It is adjustable steady
Die block 8 uses the adjustable Voltage stabilizing modules of the high-power 350W of direct current 20A, and possessing prevents electric current from pouring in down a chimney function, the super large capacitor carried
Can effectively solve high current and high-frequency problem during inverter startup, its input range is 12-55 V, exports adjustable extent
For 10-53V, such as load needs to change the module beyond the value range.Inverter 9 uses mountain spy's UPS power frequency inverters, and it is inputted
Voltage change range is 24-34V.
Below, with reference to accompanying drawing, technical scheme is described further again：
As shown in figure 1, a kind of be applied to Qinghai-xizang Plateau Region self-adapting solar energy electric power system, including：Solar panel group
1st, solar charging controller 2, batteries 3, voltage sample monitoring modular 4,1# grammed switches 5, microcontroller 6,2# journeys
Control switch 7, adjustable Voltage stabilizing module 8, inverter 9 and distribution box 10.Solar panel group 1 outside case passes through the solar energy in case
Charge controller 2 is connected with the batteries 3 outside case forms basic solar power system.In solar power system,
The output end of solar charging controller 2 in case is connected with the input of voltage sample monitoring modular 4, voltage sample monitoring mould
The output end of block 4 is connected with the input of microcontroller 6, and the output end of microcontroller 6 connects 1# grammed switches 5 and 2# respectively
The input of grammed switch 7, the output end of 2# grammed switches 7 connect adjustable Voltage stabilizing module 8 and access the input port of inverter 9,
The output end of 1# grammed switches 5 accesses the input port of inverter 9.
The solar electric power supply system output voltage that the present invention designs is AC220V, peak power output 350W.In implementation process
In, the input access of solar charging controller 2 connects what last connection in parallel formed two-by-two by eight pieces of 12V solar panels
24V solar panels group 1, under normal circumstances, its open-circuit voltage are 37.2V, but in its open circuit electricity of Qinghai-xizang Plateau Region
Pressure can reach 44V-48V.The output protection voltage of solar charging controller 2 is adjusted to 45V, inputs the protective seletion sun
Energy charge controller default value, avoids solar charging controller output protection, causes load power down.Solar charging controller
The battery pack 3 that the nominal voltage being composed in series by two pieces of 12V batteries is 24V is connected on 2 battery interface, full of when voltage
28.6V can be reached.The output of solar charging controller 2 disconnects, voltage sample monitoring modular 4 and 1# grammed switches 5,2# journeys
The connection of control switch 7.Voltage monitoring module 4 is transferred to micro- after mainly analog voltage high-frequency is sampled by 16 AD7606 chips
Type controller 6, collection microcontroller 6 reads the output signal control 1# grammed switches 5 of voltage monitoring module 4 and 2# is program control opens
7 are closed, its sampling clock depends on and external clock.The working clock frequency for gathering microcontroller 6 is 50MHz, and the frequency is much
Higher than the working frequency of any module in circuit.The magnitude of voltage that microcontroller 6 is exported by reading voltage monitoring module 4,1#
Grammed switch 5 and the automatic switchover of 2# grammed switches output, three kinds of mode of operations of decision-making circuit.The first is 1# grammed switches 5
Closure, 2# grammed switches 7 disconnect, and batteries 3 and solar panel group 1 directly provide input power for inverter 9, referred to as
Direct Model；Second is that 1# grammed switches 5 disconnect, and 2# grammed switches 7 close, batteries 3 and solar panel group 1
Voltage for inverter 9 after the adjustable voltage stabilizing of Voltage stabilizing module 8 by providing input power, abbreviation potentiostatic mode；The third is 1# journeys
The closure of control switch 5,2# grammed switches 7 close, and two-way provides input power, abbreviation mixed mode for inverter 9 simultaneously.Its is specific
Workflow is as follows：
From the point of view of local actual observation situation, the voltage of solar panel group 1 is changed to 32V from 28.6V about needs the 1-2 seconds
Time, in start, acquiescence selection steady pressure of system pattern work；
According to the different working method of voltage condition Systematic selection, when voltage monitoring module 4 detects solar charging controller 2
Output voltage when being less than 28.6V, now battery is in charged state, and microcontroller 6, which sends control information, makes 1# is program control to open
Close 5 to close, now system is operated in mixed mode, and the main purpose of this process is in order that system is transitioned into directly from potentiostatic mode
Load does not power off when connecing pattern.
When by processAfterwards, the delay of microcontroller 6 1S, disconnects 2# grammed switches 7 afterwards, and system enters direct
Pattern, the loss when purpose so done is to reduce system from low-voltage as far as possible.
When voltage monitoring module 4 detects that the output voltage of solar charging controller 2 is higher than 32V, now battery
It is already filled with, solar panel 1 participates in output, and voltage has reached the upper limit of the overvoltage protection of inverter 9, microcontroller
6, which send control instruction, closes 2# grammed switches 7, and now system is operated in mixed mode, the purpose of this process also for
System is loaded when being transitioned into Direct Model from potentiostatic mode and not powered off.
When by processAfterwards, the delay of microcontroller 6 1S, disconnects 2# grammed switches 7, system enters voltage stabilizing afterwards
Pattern, the overvoltage protection of inverter 9 after input voltage mutation is prevented, causes load power down.
Above is system main working process, the work of whole system mainly reads voltage monitoring by microcontroller 6
The output signal of module 4 makes the mutual switching that 1# grammed switches 5 and 2# grammed switches export, to complete Qinghai-xizang Plateau Region solar energy
Electric power system is adaptive.Fig. 2 is the system in July, 2017-August part in Qinghai-Tibet Maqu area（N:33°54′59.00″E:
102°09′28.00″H:3436.0m）Test result.It is defeated with voltage Acquisition Instrument difference acquisition and recording solar charging controller
Go out terminal voltage and inverter input terminal voltage, while with the local solar shortwave radiation situation of the component radiometer measurements of NR01 tetra-.
Finally give and contrast figure with the situation of change of solar radiation with unused the system load input terminal voltage using the system.From
From the point of view of test data result, good pressure stabilization function is served when the system in the case that solar radiation is very strong is in overvoltage
Do not cause to power off；Directly output is used in the state of no overvoltage.Therefore in this area, test achieves very well the system
Effect.
Claims (1)
1. one kind is applied to Qinghai-xizang Plateau Region self-adapting solar energy electric power system, including：Solar panel group（1）, the sun
Can charge controller（2）, batteries（3）, voltage sample monitoring modular（4）, 1# grammed switches（5）, microcontroller（6）、
2# grammed switches（7）, adjustable Voltage stabilizing module（8）, inverter（9）And distribution box（10）, the solar panel group outside case（1）It is logical
The solar charging controller crossed in case（2）With the batteries outside case（3）Connection forms basic solar power system；Its
It is characterized in solar power system, the solar charging controller in case（2）Output end and voltage sample monitoring modular
（4）Input connection, voltage sample monitoring modular（4）Output end and microcontroller（6）Input connection, miniature control
Device processed（6）Output end connects 1# grammed switches respectively（5）With 2# grammed switches（7）Input, 2# grammed switches（7）It is defeated
Go out end and connect adjustable Voltage stabilizing module（8）And access inverter（9）Input port, 1# grammed switches（5）Output end accesses inverter
（9）Input port.
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| CN201711076590.6A CN107634573A (en) | 2017-11-06 | 2017-11-06 | One kind is applied to Qinghai-xizang Plateau Region self-adapting solar energy electric power system |
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| CN201711076590.6A CN107634573A (en) | 2017-11-06 | 2017-11-06 | One kind is applied to Qinghai-xizang Plateau Region self-adapting solar energy electric power system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111446737A (en) * | 2020-04-09 | 2020-07-24 | 西藏华阳供热工程服务有限公司 | Energy storage type photovoltaic off-grid power generation system for plateau and remote monitoring method |
| CN111864840A (en) * | 2020-07-22 | 2020-10-30 | 重庆英卡电子有限公司 | Solar charging controller with load control function |
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| CN111864840A (en) * | 2020-07-22 | 2020-10-30 | 重庆英卡电子有限公司 | Solar charging controller with load control function |
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