CN203981788U - A kind of photovoltaic combining inverter automatic detection device - Google Patents
A kind of photovoltaic combining inverter automatic detection device Download PDFInfo
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- CN203981788U CN203981788U CN201420261763.7U CN201420261763U CN203981788U CN 203981788 U CN203981788 U CN 203981788U CN 201420261763 U CN201420261763 U CN 201420261763U CN 203981788 U CN203981788 U CN 203981788U
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- detection device
- automatic detection
- photovoltaic combining
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Abstract
The utility model discloses a kind of photovoltaic combining inverter automatic detection device, comprise formula DC power supply able to programme, power-supply controller of electric, formula AC power supply able to programme, overvoltage protection and fault control device, alternating current electronic load and inverter to be measured, power analyzer, power quality analyzer, oscillograph and multimeter, control terminal, interface bus, gpib bus; This utility model is by being integrated in one excess voltage protection and short-circuit test circuit; switching that can be voluntarily; can be incorporated to multichannel loading to meet the requirement of various load states; this pick-up unit not only effectively simulates superpotential and the short circuit phenomenon of output terminal and grid side appearance; make to detect more comprehensive; also make system more simplify, facilitate personnel through line operate.
Description
Technical field
The utility model relates to a kind of photovoltaic combining inverter automatic detection device.
Background technology
The energy crisis of global range and environmental crisis are impelled the operation that is more and more connected to the grid of the distributed power source based on new energy technology.And the photovoltaic combining inverter requisite device that is photovoltaic generating system, the direct current of solar module output, must, by after photovoltaic DC-to-AC converter, could access electrical network or load.Therefore, the quality of the reliability service of photovoltaic generating system and the safety and stability of electrical network and photovoltaic combining inverter has direct relation.Therefore be, necessary to the research of photovoltaic combining inverter automatic checkout system.
At present, general photovoltaic combining inverter automatic checkout system can only be carried out performance to photovoltaic combining inverter and be referred to detect mark, as: the tests such as output end voltage and electric current, conversion efficiency detection etc. and anti-island effect protection detection.But can not simulate the various situations that inverter output end and grid side occur, as: photovoltaic DC-to-AC converter output voltage raises suddenly, and the situations such as short circuit appear in grid side; This can cause inverter security performance test perfect not, cannot meet on market photovoltaic combining inverter detection system safety, stable, quality requirements reliably.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of novel rational in infrastructure for the deficiencies in the prior art, precision is high, reliability is strong, can to the property indices safety guarantee of photovoltaic combining inverter the photovoltaic combining inverter automatic detection device that detects.
The utility model is for solving the problems of the technologies described above by the following technical solutions
A kind of photovoltaic combining inverter automatic detection device, comprises a direct supply, AC power, control terminal, and be connected with described control terminal by gpib bus multiple for measuring the sub-measuring unit of inverter parameter to be measured.
Preferably, the described alternating current electronic load that comprises power analyzer, power quality analyzer, multimeter and oscillograph, detects for photovoltaic DC-to-AC converter island effect for measuring the multiple sub-measuring unit of inverter parameter to be measured.
Preferably, described control terminal is PC.
Preferably, described oscillograph is digital type memory-scope.
Preferably, described alternating current electronic load is RLC alternating current electronic load.
The utility model adopts above technical scheme compared with prior art, has following technique effect:
1, novel, simple and reasonable, precision is high, and reliability is strong;
2, can accurately detect the property indices of photovoltaic combining inverter.This overvoltage protection and short-circuit test device set excess voltage protection and short-circuit test circuit are in one; switching that can be voluntarily; can be incorporated to multichannel loading to meet the requirement of various load states; this tester not only effectively simulates superpotential and the short circuit phenomenon of output terminal and grid side appearance; make to detect more comprehensive; also make system more simplify, facilitate personnel through line operate.
Brief description of the drawings
Fig. 1 is circuit theory diagrams of the present utility model;
Fig. 2 is the utility model detection system island effect circuit theory diagrams;
Fig. 3 is the utility model overvoltage protection and short-circuit test circuit theory diagrams.
In figure; 1. formula DC power supply able to programme, 2. power-supply controller of electric, 3. inverter to be measured; 4. power analyzer, 5.GPIB bus, 6.PC controller; 7. power quality analyzer, 8. digital type storage oscilloscope and multimeter, 9.RS485 bus; 10. switch; 11.RLC alternating current electronic load, 12. overvoltage protections and short-circuit test device, 13. formula AC power supply able to programme; 14. single-pole double-throw switch (SPDT)s, 15. short-circuit current relays.
Embodiment
Below in conjunction with accompanying drawing, the technical solution of the utility model is described in further detail:
A kind of photovoltaic combining inverter automatic detection device, comprise a direct supply, AC power, control terminal, and be connected with described control terminal by gpib bus multiple for measuring the sub-measuring unit of inverter parameter to be measured, described for measuring alternating current electronic load that the multiple sub-measuring unit of inverter parameter to be measured comprises power analyzer, power quality analyzer, detects for photovoltaic DC-to-AC converter island effect, oscillograph and multimeter for detection of photovoltaic DC-to-AC converter both end voltage electric current and waveform; Described direct supply is connected with inverter to be measured respectively with AC power, and described inverter to be measured connects AC power supply; In circuit between described alternating current electronic load access in parallel inverter to be measured and AC power supply; Described control terminal is by the each sub-measuring unit of gpib bus control, and described power analyzer connects inverter to be measured, for detection of the power of inverter direct-flow side to be measured and AC; Described power quality analyzer connects inverter AC to be measured, for detection of the quality of power supply of the alternating current of inverter.
As shown in Figure 1, described formula power supply unit 1 able to programme connects power-supply controller of electric 2, and described power-supply controller of electric connects inverter 3 to be measured, and described inverter 3 to be measured connects formula AC power supply 13 able to programme and forms loop; In circuit between described RLC alternating current electronic load 11 access in parallel inverters 3 to be measured and formula AC power supply 13 able to programme, for the detection of the island effect of photovoltaic DC-to-AC converter; Described control terminal is controlled each detecting unit by gpib bus 5, and described RS485 bus 9 connects alternating current electronic load 11, carries out isolated island reaction for controlling alternating current electronic load; Described power analyzer 4 connects inverter 3 to be measured, for detection of the power of inverter direct-flow side to be measured and AC; Described power quality analyzer 7 connects inverter 3 ACs to be measured, for detection of the quality of power supply of the alternating current of inverter; Described digital type memory-scope and multimeter 8 connect the AC of inverter 3 to be measured, for detection of with the electric current and voltage and the waveform that show inverter input/output terminal, and record and storage; Described overvoltage protection and short-circuit test device 12 connect the AC of inverter to be measured, for simulating inverter superpotential and short-circuit conditions.
As shown in Figure 2, disconnect K2, closed K1, K3, by regulating formula DC power supply able to programme to determine the real output of inverter to be measured, by power analyzer record data, disconnect K1.Then closed K2, by regulating the parameter of RLC alternating current electronic load, makes its active power and reactive power equal the opposite number of the data registration of record before.Finally that K1, K2, K3 is closed.Then say K3 disconnect carry out isolated island detection, record inverter by digital type storage oscilloscope and multimeter and be disconnected to the inverter needed time out of service from K3.
As shown in Figure 3, by twoly hilted broadsword holding K switch 8, K9 gets to 1 grade, Closing Switch K4, K5, form loop by load, makes short-circuit current relay closes, can carry out short-circuit test.By twoly hilted broadsword holding K switch 8, K9 gets to 2 grades, Closing Switch K4, K5, K6, K7, add voltage U ovp at K6, K7 two ends, can carry out overvoltage protection test.
Claims (5)
1. a photovoltaic combining inverter automatic detection device, it is characterized in that: comprise a direct supply, AC power, control terminal, and be connected with described control terminal by gpib bus multiple for measuring the sub-measuring unit of inverter parameter to be measured.
2. photovoltaic combining inverter automatic detection device according to claim 1, is characterized in that: the described alternating current electronic load that comprises power analyzer, power quality analyzer, multimeter and oscillograph, detects for photovoltaic DC-to-AC converter island effect for measuring the multiple sub-measuring unit of inverter parameter to be measured.
3. photovoltaic combining inverter automatic detection device according to claim 1, is characterized in that: described control terminal is PC.
4. photovoltaic combining inverter automatic detection device according to claim 2, is characterized in that: described oscillograph is digital type memory-scope.
5. photovoltaic combining inverter automatic detection device according to claim 2, is characterized in that: described alternating current electronic load is RLC alternating current electronic load.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420261763.7U CN203981788U (en) | 2014-05-21 | 2014-05-21 | A kind of photovoltaic combining inverter automatic detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420261763.7U CN203981788U (en) | 2014-05-21 | 2014-05-21 | A kind of photovoltaic combining inverter automatic detection device |
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| Publication Number | Publication Date |
|---|---|
| CN203981788U true CN203981788U (en) | 2014-12-03 |
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| CN201420261763.7U Expired - Fee Related CN203981788U (en) | 2014-05-21 | 2014-05-21 | A kind of photovoltaic combining inverter automatic detection device |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104391208A (en) * | 2014-12-05 | 2015-03-04 | 国家电网公司 | Detection device and detection method for photovoltaic anti-islanding test |
| CN104678326A (en) * | 2015-02-05 | 2015-06-03 | 南京工程学院 | Method and device for detecting low voltage ride through and island effect of photovoltaic grid-connected inverter |
| CN105759222A (en) * | 2016-02-24 | 2016-07-13 | 上海交通大学 | Small-capacity photovoltaic automatic detection platform and using method thereof |
| CN106383285A (en) * | 2016-11-25 | 2017-02-08 | 海南电力技术研究院 | Multichannel mini household inverter efficiency testing system and testing method |
| CN108535664A (en) * | 2018-04-04 | 2018-09-14 | 广州供电局有限公司 | Power emergency power source equipment movable type detection platform |
| CN109541359A (en) * | 2018-12-27 | 2019-03-29 | 许昌开普检测研究院股份有限公司 | A kind of converter automatic test system and its application method |
| CN109586670A (en) * | 2018-11-16 | 2019-04-05 | 广州供电局有限公司 | Photovoltaic power station automatic checkout system and method |
| CN115967350A (en) * | 2023-01-10 | 2023-04-14 | 华北电力科学研究院有限责任公司 | Flexible testing method and device for electrical performance of distributed photovoltaic inverter |
-
2014
- 2014-05-21 CN CN201420261763.7U patent/CN203981788U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104391208A (en) * | 2014-12-05 | 2015-03-04 | 国家电网公司 | Detection device and detection method for photovoltaic anti-islanding test |
| CN104678326A (en) * | 2015-02-05 | 2015-06-03 | 南京工程学院 | Method and device for detecting low voltage ride through and island effect of photovoltaic grid-connected inverter |
| CN104678326B (en) * | 2015-02-05 | 2017-09-12 | 南京工程学院 | Photovoltaic combining inverter low voltage crossing and island effect detection method and device |
| CN105759222A (en) * | 2016-02-24 | 2016-07-13 | 上海交通大学 | Small-capacity photovoltaic automatic detection platform and using method thereof |
| CN106383285A (en) * | 2016-11-25 | 2017-02-08 | 海南电力技术研究院 | Multichannel mini household inverter efficiency testing system and testing method |
| CN108535664A (en) * | 2018-04-04 | 2018-09-14 | 广州供电局有限公司 | Power emergency power source equipment movable type detection platform |
| CN109586670A (en) * | 2018-11-16 | 2019-04-05 | 广州供电局有限公司 | Photovoltaic power station automatic checkout system and method |
| CN109541359A (en) * | 2018-12-27 | 2019-03-29 | 许昌开普检测研究院股份有限公司 | A kind of converter automatic test system and its application method |
| CN115967350A (en) * | 2023-01-10 | 2023-04-14 | 华北电力科学研究院有限责任公司 | Flexible testing method and device for electrical performance of distributed photovoltaic inverter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141203 Termination date: 20150521 |
|
| EXPY | Termination of patent right or utility model |