CN103063943B - Method of detecting electric performance of photovoltaic inverter - Google Patents
Method of detecting electric performance of photovoltaic inverter Download PDFInfo
- Publication number
- CN103063943B CN103063943B CN201210517754.5A CN201210517754A CN103063943B CN 103063943 B CN103063943 B CN 103063943B CN 201210517754 A CN201210517754 A CN 201210517754A CN 103063943 B CN103063943 B CN 103063943B
- Authority
- CN
- China
- Prior art keywords
- power
- photovoltaic
- test
- converter
- photovoltaic inverter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000012360 testing method Methods 0.000 claims abstract description 30
- 238000001514 detection method Methods 0.000 claims description 5
- 238000012545 processing Methods 0.000 abstract description 6
- 238000005516 engineering process Methods 0.000 description 6
- 230000001186 cumulative effect Effects 0.000 description 4
- 238000009825 accumulation Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
Landscapes
- Photovoltaic Devices (AREA)
- Inverter Devices (AREA)
- Testing Of Individual Semiconductor Devices (AREA)
Abstract
The invention provides a system and a method of detecting an electric performance of a photovoltaic inverter. The system comprises a photovoltaic inverter, a power analyzer and an upper computer. The power analyzer collects the electric parameters of the photovoltaic inverter, and transmits collected item parameters to the upper computer. The system and the method of detecting the electric performance of the photovoltaic inverter achieve the efficiency test and the harmonic test of the photovoltaic inverter, the system is simple in structure, the method is simple and easy to achieve and convenient to use, the accuracy of an electric power data test can be guaranteed, and on the other hand, complex data processing work in a test process is simplified, and the test efficiency of the photovoltaic inverter is improved.
Description
Technical field
The invention belongs to efficiency test and appraisal technical field, be specifically related to a kind of photovoltaic DC-to-AC converter system for detecting electrical property and method.
Background technology
Solar energy power generating because of its volume little, the life-span is long, the feature of zero delivery, just at rapid growth.Present stage, photovoltaic generation mainly comprises 400V low-voltage customer side grid-connected system and through step-up transformer, accesses the large-sized photovoltaic power station of medium-sized photovoltaic plant and the access 66kV of 10kV and 35kV.On July 21st, 2009; the Ministry of Finance, the Department of Science and Technology, National Energy Board combine and have issued < < about implementing the notice > > of golden sun demonstration project; determine comprehensively to take financial aid, science and technology support and market to pull mode, accelerate industrialization and the large-scale development of domestic photovoltaic generation.In March, 2009, National Ministry of Finance is for carrying out and implementing < < Renewable Energy Law > >, implement State Council's energy-saving and emission-reduction strategic plan, accelerate solar energy power technology in the application in urban and rural buildings field, formulated < < solar photoelectric Application in Building financial aid capital management tentative method > >.Under the promotion energetically of national policy, distributed photovoltaic power has had swift and violent development.According to statistics, by the end of the year 2011,214.30 ten thousand kilowatts of grid-connected photovoltaic installations, account for 4.15% of distributed power source total volume.
Development along with photovoltaic industry, photovoltaic DC-to-AC converter is had higher requirement, inversion unit is the key equipment in whole DC power generation system, its effect is that the low-voltage DC that cell panel and accumulator are provided is reverse into alternating current, supply AC load is used, and its reliability directly has influence on the stability of whole DC power generation system operation.The output waveform of inverter should have less degree of distortion, to avoid grid-connected photovoltaic system to pollute public electric wire net volume.For improving the utilization factor of the energy, should provide as possible the conversion efficiency of inverter.
At present, the testing precision of the electric performance test of inverter (conversion efficiency and harmonic wave) is very high, but when inverter electric performance test, exists data volume large, and power data relies on the problem of hand-kept, processing.Therefore cause efficiency test work efficiency lower, consuming time longer.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art, the invention provides a kind of photovoltaic DC-to-AC converter system for detecting electrical property and method, complete efficiency test, the harmonic wave test of photovoltaic DC-to-AC converter, this system architecture is simple, method is simple, easy to use, can guarantee the accuracy of electric power data test, simplify data processing work loaded down with trivial details in test process on the other hand, improved the testing efficiency of photovoltaic DC-to-AC converter.
In order to realize foregoing invention object, the present invention takes following technical scheme:
A kind of photovoltaic DC-to-AC converter system for detecting electrical property is provided, and described system comprises photovoltaic DC-to-AC converter, power analyzer and host computer; Described power analyzer gathers described photovoltaic DC-to-AC converter electrical quantity, and gathered item argument is transferred to host computer.
Described electrical quantity comprises electric weight, electric power, voltage and current.
Between described power analyzer and host computer, realize LAN and connect, the data that described host computer received power analyser sends, carry out statistical computation by Excel worksheet to data, and then generated data form, and preserve and print.
Described system detects photovoltaic DC-to-AC converter in input efficiency, output efficiency and the power factor of 5%, 10%, 15%, 20%, 25%, 30%, 50%, 75% and 100% power points of rated power, by Excel worksheet, obtains the integration efficiency in the cumulative time.
The model of described power analyzer is 3390, and its cumulative time of pointing out image data at above-mentioned power is adjustable, and it is by the clock control of described power analyzer.
The invention provides a kind of photovoltaic DC-to-AC converter electrical property detection method, said method comprising the steps of:
Step 1: timing acquiring photovoltaic DC-to-AC converter electrical quantity;
Step 2: IP address and port numbers that power analyzer and host computer are set;
Step 3: regulate the output power of described photovoltaic DC-to-AC converter, make it reach 5% of rated power, carry out the efficiency test of 5% power points;
Step 4: survey the efficiency of 10%, 15%, 20%, 25%, 30%, 50%, 75% and 100% power points according to method described in step 3, comprise maximum power point P
maxtest;
Step 5: generate and derived data form according to Excel.
Compared with prior art, beneficial effect of the present invention is:
1. the present invention completes efficiency test, the harmonic wave test of photovoltaic DC-to-AC converter, this system architecture is simple, method is simple, easy to use, can guarantee the accuracy of electric power data test, simplify data processing work loaded down with trivial details in test process on the other hand, improve the testing efficiency of photovoltaic DC-to-AC converter.
2.Excle self has good man-machine interface and concrete data-handling capacity, and has outstanding Display and Print control function, easy to use; Can change input and output object according to on-the-spot needs, measure inverter and exchange or DC side parameter.
3. slave computer of the present invention is power analyzer, and its physical quantity accuracy is guaranteed by power instrument analysis.
4. solved in the past in inverter electrical property measuring process amount of test data large, data processing work is loaded down with trivial details, the problems such as accuracy of measurement is low, and in efficiency test process, electric weight accumulation duration is adjustable, and electric weight accumulation duration is reliable by the control of power analyzer machine clock, accurate timing.
Accompanying drawing explanation
Fig. 1 is photovoltaic DC-to-AC converter system for detecting electrical property structural representation in the embodiment of the present invention;
Fig. 2 is photovoltaic DC-to-AC converter electrical property detection method process flow diagram in the embodiment of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail.
As Fig. 1, a kind of photovoltaic DC-to-AC converter system for detecting electrical property is provided, described system comprises photovoltaic DC-to-AC converter, power analyzer and host computer; Described power analyzer gathers described photovoltaic DC-to-AC converter electrical quantity, and gathered item argument is transferred to host computer.
Described electrical quantity comprises electric weight, electric power, voltage and current.
Between described power analyzer and host computer, realizing LAN connects, the data that described host computer sends by the VBA technology received power analyser in Excel worksheet, by Excel worksheet, data are carried out to statistical computation, and then generated data form, and preserve and print.
Described system detects photovoltaic DC-to-AC converter in input efficiency, output efficiency and the power factor of 5%, 10%, 15%, 20%, 25%, 30%, 50%, 75% and 100% power points of rated power, by Excel worksheet, obtains the integration efficiency in the cumulative time.
The model of described power analyzer is 3390, and its cumulative time of pointing out image data at above-mentioned power is adjustable, and it is by the clock control of described power analyzer.
As Fig. 2, the invention provides a kind of photovoltaic DC-to-AC converter electrical property detection method, said method comprising the steps of:
Step 1: timing acquiring photovoltaic DC-to-AC converter electrical quantity; The voltage and current signal access power analyser of photovoltaic DC-to-AC converter, the electric weight accumulation duration that power analyzer is set is 10 minutes, realizes the timing acquiring of data.
Step 2: IP address and port numbers that power analyzer and host computer are set;
Step 3: regulate the output power of described photovoltaic DC-to-AC converter, make it reach 5% of rated power, carry out the efficiency test of 5% power points;
Step 4: survey the efficiency of 10%, 15%, 20%, 25%, 30%, 50%, 75% and 100% power points according to method described in step 3, comprise maximum power point P
maxtest;
Step 5: generate and derived data form according to Excel.
Photovoltaic DC-to-AC converter should not cause grid voltage waveform excessively distortion and the excessive harmonic current of injection electrical network when operation, to guarantee not cause adverse effect to being connected to other equipment of electrical network.So when photovoltaic DC-to-AC converter run with load, current harmonics resultant distortion rate limit value is 5%, and the containing ratio of individual harmonic current has a concrete limit value.In test, detect successively inverter whether up to standard at the relative harmonic content at 100%, 70%, 50%, 30% POL place.
Harmonic wave test link of the present invention, by the VBA technology in Excel, communicate by letter with power analyzer, total harmonic distortion degree, each containing ratio, each effective value such as A, B, C three-phase voltage, electric current in readout power analyser 3390 respectively, then the data processing tools by Excel compares the relative harmonic content of the data of collection and requirement, draws test result.By color, mark each test data and whether surpass limit value, if surpass limit value with red mark, eye-catching directly perceived.
Finally should be noted that: above embodiment is only in order to illustrate that technical scheme of the present invention is not intended to limit, although the present invention is had been described in detail with reference to above-described embodiment, those of ordinary skill in the field are to be understood that: still can modify or be equal to replacement the specific embodiment of the present invention, and do not depart from any modification of spirit and scope of the invention or be equal to replacement, it all should be encompassed in the middle of claim scope of the present invention.
Claims (1)
1. a photovoltaic DC-to-AC converter electrical property detection method, is characterized in that: said method comprising the steps of:
Step 1: timing acquiring photovoltaic DC-to-AC converter electrical quantity;
Step 2: IP address and port numbers that power analyzer and host computer are set;
Step 3: regulate the output power of described photovoltaic DC-to-AC converter, make it reach 5% of rated power, carry out the efficiency test of 5% power points;
Step 4: survey the efficiency of 10%, 15%, 20%, 25%, 30%, 50%, 75% and 100% power points according to method described in step 3, comprise maximum power point P
maxtest;
Step 5: generate and derived data form according to Excel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210517754.5A CN103063943B (en) | 2012-12-05 | 2012-12-05 | Method of detecting electric performance of photovoltaic inverter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210517754.5A CN103063943B (en) | 2012-12-05 | 2012-12-05 | Method of detecting electric performance of photovoltaic inverter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103063943A CN103063943A (en) | 2013-04-24 |
| CN103063943B true CN103063943B (en) | 2014-02-19 |
Family
ID=48106649
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210517754.5A Active CN103063943B (en) | 2012-12-05 | 2012-12-05 | Method of detecting electric performance of photovoltaic inverter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103063943B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109541359B (en) * | 2018-12-27 | 2021-01-08 | 许昌开普检测研究院股份有限公司 | Converter automatic test system and use method thereof |
| CN111443248A (en) * | 2020-02-27 | 2020-07-24 | 科华恒盛股份有限公司 | Inverter performance index test data extraction system and method |
| CN116819218B (en) * | 2023-08-30 | 2023-11-17 | 传麒科技(北京)股份有限公司 | Automatic testing method and system for inverter |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201892735U (en) * | 2010-09-30 | 2011-07-06 | 深圳美凯电子股份有限公司 | Test system for grid-connected photovoltaic inverter |
| CN202093155U (en) * | 2011-05-03 | 2011-12-28 | 国网电力科学研究院 | Large-volume multi-adaptable detection platform for grid-connected photovoltaic inverter |
| CN202110266U (en) * | 2011-06-24 | 2012-01-11 | 山东鲁亿通智能电气股份有限公司 | Assessing device for operating conditions of photovoltaic inverters |
| CN202421323U (en) * | 2011-12-21 | 2012-09-05 | 上海正泰电源系统有限公司 | Automatic testing device for photovoltaic inverter |
| CN203069691U (en) * | 2012-12-05 | 2013-07-17 | 中国电力科学研究院 | System for detecting electric performances of photovoltaic inverter |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102495378B (en) * | 2011-12-31 | 2013-09-25 | 昆山圣泰机电制造有限公司 | Switch power supply testing apparatus |
-
2012
- 2012-12-05 CN CN201210517754.5A patent/CN103063943B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201892735U (en) * | 2010-09-30 | 2011-07-06 | 深圳美凯电子股份有限公司 | Test system for grid-connected photovoltaic inverter |
| CN202093155U (en) * | 2011-05-03 | 2011-12-28 | 国网电力科学研究院 | Large-volume multi-adaptable detection platform for grid-connected photovoltaic inverter |
| CN202110266U (en) * | 2011-06-24 | 2012-01-11 | 山东鲁亿通智能电气股份有限公司 | Assessing device for operating conditions of photovoltaic inverters |
| CN202421323U (en) * | 2011-12-21 | 2012-09-05 | 上海正泰电源系统有限公司 | Automatic testing device for photovoltaic inverter |
| CN203069691U (en) * | 2012-12-05 | 2013-07-17 | 中国电力科学研究院 | System for detecting electric performances of photovoltaic inverter |
Non-Patent Citations (3)
| Title |
|---|
| CNG01R31/42A 2012.06.13 |
| 光伏并网逆变器检测平台的研制;闫华光等;《电网技术》;20110630;第35卷(第6期);139-143 * |
| 闫华光等.光伏并网逆变器检测平台的研制.《电网技术》.2011,第35卷(第6期),139-143. |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103063943A (en) | 2013-04-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201699430U (en) | Testing device of distributed type photovoltaic power supply parallel-grid inverter | |
| CN106998147B (en) | Energy-saving multifunctional simulated electricity load device and control method thereof | |
| CN106203879B (en) | A kind of photovoltaic power station system efficiency calculation method | |
| CN204758716U (en) | Dc -to -ac converter is at ring testing arrangement | |
| CN103399223B (en) | A kind of grid-connected Intelligent Measurement warning device of grid-connected power generation system and method | |
| CN105141253B (en) | Photovoltaic output curve slope-based photovoltaic electricity-sealing identification method | |
| CN103390253A (en) | Evaluation method for increment energy efficiency of power grid energy conservation and loss reduction | |
| CN204269808U (en) | A kind of three-phase electric energy meter on-site calibrator with virtual current source | |
| Gallo et al. | AC and DC power quality of photovoltaic systems | |
| CN105870974A (en) | Bidirectional measurement device of electric quantity parameters of distributed photovoltaic grid-connected system | |
| CN103063943B (en) | Method of detecting electric performance of photovoltaic inverter | |
| CN104333207A (en) | Direct current power source device for photovoltaic inverter | |
| CN202189099U (en) | Portable monitor | |
| CN104865446A (en) | On-line detection method of photovoltaic grid-connected inverter alternating-current output line impedance | |
| CN202093095U (en) | Direct-current resistance tester for transformer | |
| CN203350356U (en) | High-voltage user photovoltaic power generation energy metering system | |
| CN202066925U (en) | Harmonic monitor of electric network | |
| CN105391051A (en) | Intelligent substation energy efficiency enhancement transformation energy saving amount calculation method | |
| CN104485672A (en) | Photovoltaic inverter group self-balancing control method and system applicable to micro grid | |
| CN203069691U (en) | System for detecting electric performances of photovoltaic inverter | |
| CN106849152A (en) | A kind of Synthetic Simulation Platform method for building up of photovoltaic plant | |
| CN104485686A (en) | Wind and solar integrated self-balancing control method and system applicable to distribution network | |
| CN107370165A (en) | A kind of computational methods of photovoltaic plant access system design phase tri-phase unbalance factor | |
| CN204349260U (en) | A kind of photovoltaic metering cabinet | |
| CN204316434U (en) | A kind of high-power PV analog power control system based on DSP framework |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |