CN212031609U - High-voltage testing system for photovoltaic inverter - Google Patents
High-voltage testing system for photovoltaic inverter Download PDFInfo
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Abstract
The utility model provides a high-voltage testing system of a photovoltaic inverter, which comprises a switch cabinet, a voltage regulator, a rectification power input and output cabinet, a rectification power supply, a photovoltaic inverter, a grid-connected transformer input and output cabinet, a grid-connected transformer and an industrial personal computer; the switch cabinet, the voltage regulator, the rectification power supply input and output cabinet and the rectification power supply form a power supply part, and the photovoltaic inverter, the grid-connected transformer input and output cabinet and the grid-connected transformer form an output part; the power supply part adopts a voltage regulating and rectifying circuit to output an adjustable direct current voltage, and then the three-phase alternating current voltage is output by a tested photovoltaic converter, boosted by a transformer and fed back to a 10kV power grid. Each device is connected with the industrial personal computer, respective data is embodied on the industrial personal computer, and whether the system normally operates is detected. The utility model discloses can realize real-time supervision, realize control failure protect function, easily realize, practice thrift the cost.
Description
Technical Field
The utility model relates to a valve field, more specifically relates to a photovoltaic inverter high pressure test system.
Background
With the increasingly prominent energy problem, the development of new energy is generally regarded as important worldwide. The total installed amount of new energy represented by a fan and a photovoltaic increases continuously and rapidly. The photovoltaic inverter is used as a core part of a photovoltaic power generation system, and the power generation efficiency is directly influenced. In order to guarantee the factory quality of the photovoltaic inverter, strict routine tests are required to be carried out on the photovoltaic inverter so as to expose the quality problem and hidden danger of the photovoltaic inverter in advance.
At present, photovoltaic inverter testing mainly comprises two types of testing means, namely manual testing and automatic testing. The manual test is mainly performed by human operation, test parameters measured by various requirements are recorded by test equipment according to a debugging outline, and then parameters such as operating efficiency and the like are obtained through calculation.
The research aiming at the automatic test is earlier carried out, and certain results are obtained at present. CN 103645393B, "an automatic testing system and method for current transformer", proposes an automatic low-voltage testing system suitable for current transformers, which realizes the transition from manual testing to automatic testing, and solves the problems that manual testing depends on manual operation and manual judgment, and parameter setting and consistency of testing results cannot be guaranteed. The test system relates to low-voltage test, and mainly aims at low-voltage pulse and voltage and current sensor test.
Disclosure of Invention
The utility model discloses to photovoltaic inverter test system degree of automation is not high among the prior art, and the unsafe problem of test result provides a photovoltaic inverter high pressure test system.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a high-voltage test system for a photovoltaic inverter comprises a switch cabinet, a voltage regulator, a rectification power supply input and output cabinet, a rectification power supply, the photovoltaic inverter, a grid-connected transformer input and output cabinet, a grid-connected transformer and an industrial personal computer; the method is characterized in that: the current passes through the switch cabinet, the voltage regulator, the rectification power supply input and output cabinet, the rectification power supply and the rectification power supply input and output cabinet, and an adjustable direct current voltage is output through the devices; then flows through a photovoltaic inverter, a grid-connected transformer input/output cabinet, a grid-connected transformer and a grid-connected transformer input/output cabinet; outputting three-phase alternating-current voltage through the tested photovoltaic converter, boosting the voltage through a transformer and feeding the voltage back to a 10kV power grid; the switch cabinet, the voltage regulator, the rectifying power supply input and output cabinet, the rectifying power supply, the photovoltaic inverter, the grid-connected transformer input and output cabinet and the grid-connected transformer are respectively connected with the industrial personal computer, test data of each device are displayed through the industrial personal computer, if the data exceed a set value, the industrial personal computer sends out a signal, and a worker manually controls to reduce the data value.
Further, the switch cabinet comprises a current transformer, a voltage transformer, a lightning arrester, a fuse, a circuit breaker and a reactor.
Further, the voltage regulator includes a boost contactor and a buck contactor.
Further, the rectification power supply input and output cabinet comprises an input breaker and an output breaker.
Further, the input and output cabinet of the grid-connected transformer comprises an input breaker and an output breaker.
Furthermore, the switch cabinet, the voltage regulator, the rectification power supply input and output cabinet and the rectification power supply form a power supply part.
Furthermore, the photovoltaic inverter, the grid-connected transformer input/output cabinet and the grid-connected transformer form an output part.
The beneficial effects of the utility model are that degree of automation is high.
Drawings
Fig. 1 is a schematic block diagram of a main circuit of a photovoltaic inverter high-voltage testing system.
Detailed Description
The present invention will be further described with reference to the following embodiments.
Example 1
A high-voltage test system for a photovoltaic inverter comprises a switch cabinet, a voltage regulator, a rectification power supply input and output cabinet, a rectification power supply, the photovoltaic inverter, a grid-connected transformer input and output cabinet, a grid-connected transformer and an industrial personal computer; the current passes through the switch cabinet, the voltage regulator, the rectification power supply input and output cabinet, the rectification power supply and the rectification power supply input and output cabinet, and an adjustable direct current voltage is output through the devices; then flows through a photovoltaic inverter, a grid-connected transformer input/output cabinet, a grid-connected transformer and a grid-connected transformer input/output cabinet; outputting three-phase alternating-current voltage through the tested photovoltaic converter, boosting the voltage through a transformer and feeding the voltage back to a 10kV power grid; the switch cabinet, the voltage regulator, the rectifying power supply input and output cabinet, the rectifying power supply, the photovoltaic inverter, the grid-connected transformer input and output cabinet and the grid-connected transformer are respectively connected with the industrial personal computer, test data of each device are displayed through the industrial personal computer, if the data exceed a set value, the industrial personal computer sends out a signal, and a worker manually controls to reduce the data value.
The switch cabinet comprises a current transformer, a voltage transformer, a lightning arrester, a fuse protector, a circuit breaker and a reactor; the voltage regulator comprises a boosting contactor and a reducing contactor; the rectification power supply input and output cabinet comprises an input circuit breaker and an output circuit breaker; the input and output cabinet of the grid-connected transformer comprises an input breaker and an output breaker; the switch cabinet, the voltage regulator, the rectification power supply input and output cabinet and the rectification power supply form a power supply part; the photovoltaic inverter, the grid-connected transformer input and output cabinet and the grid-connected transformer form an output part.
The photovoltaic inverter test system main circuit is composed of a power supply part and an output part, wherein the current of the power supply part passes through a switch cabinet, a voltage regulator, a rectification power supply input and output cabinet, a rectification power supply and a rectification power supply input and output cabinet, and an adjustable direct current voltage is output through the devices; the output part flows through the photovoltaic inverter, the grid-connected transformer input/output cabinet, the grid-connected transformer and the grid-connected transformer input/output cabinet; outputting three-phase alternating-current voltage through the tested photovoltaic converter, boosting the voltage through a transformer and feeding the voltage back to a 10kV power grid; the industrial computer links to each other with each device of test system, and real-time supervision individual device operating condition and parameter, and the photovoltaic inverter each item data of being tested all show on the industrial computer, supply the staff in time to observe, prevent that the accident from taking place.
The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. Equivalent substitutes or changes made by the technical personnel in the technical field on the basis of the utility model are all within the protection scope of the utility model.
Claims (7)
1. A high-voltage test system for a photovoltaic inverter comprises a switch cabinet, a voltage regulator, a rectification power supply input and output cabinet, a rectification power supply, the photovoltaic inverter, a grid-connected transformer input and output cabinet, a grid-connected transformer and an industrial personal computer; the method is characterized in that: the current passes through the switch cabinet, the voltage regulator, the rectification power supply input and output cabinet, the rectification power supply and the rectification power supply input and output cabinet, and an adjustable direct current voltage is output through the devices; then flows through a photovoltaic inverter, a grid-connected transformer input/output cabinet, a grid-connected transformer and a grid-connected transformer input/output cabinet; outputting three-phase alternating-current voltage through the tested photovoltaic converter, boosting the voltage through a transformer and feeding the voltage back to a 10kV power grid; the switch cabinet, the voltage regulator, the rectifying power supply input and output cabinet, the rectifying power supply, the photovoltaic inverter, the grid-connected transformer input and output cabinet and the grid-connected transformer are respectively connected with the industrial personal computer, test data of each device are displayed through the industrial personal computer, if the data exceed a set value, the industrial personal computer sends out a signal, and a worker manually controls to reduce the data value.
2. The photovoltaic inverter high voltage test system of claim 1, wherein: the switch cabinet comprises a current transformer, a voltage transformer, a lightning arrester, a fuse protector, a circuit breaker and a reactor.
3. The photovoltaic inverter high voltage test system of claim 1, wherein: the voltage regulator includes a boost contactor and a buck contactor.
4. The photovoltaic inverter high voltage test system of claim 1, wherein: the rectification power supply input and output cabinet comprises an input breaker and an output breaker.
5. The photovoltaic inverter high voltage test system of claim 1, wherein: the input and output cabinet of the grid-connected transformer comprises an input breaker and an output breaker.
6. The photovoltaic inverter high voltage test system of claim 1, wherein: the switch cabinet, the voltage regulator, the rectification power supply input and output cabinet and the rectification power supply form a power supply part.
7. The photovoltaic inverter high voltage test system of claim 1, wherein: the photovoltaic inverter, the grid-connected transformer input and output cabinet and the grid-connected transformer form an output part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922224747.6U CN212031609U (en) | 2019-12-12 | 2019-12-12 | High-voltage testing system for photovoltaic inverter |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922224747.6U CN212031609U (en) | 2019-12-12 | 2019-12-12 | High-voltage testing system for photovoltaic inverter |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114264900A (en) * | 2021-11-25 | 2022-04-01 | 深圳科士达科技股份有限公司 | Test system of inversion boosting equipment |
| CN115825633A (en) * | 2023-02-14 | 2023-03-21 | 深圳市首航新能源股份有限公司 | Assessment method and device of photovoltaic inverter complete machine test system and upper computer |
-
2019
- 2019-12-12 CN CN201922224747.6U patent/CN212031609U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114264900A (en) * | 2021-11-25 | 2022-04-01 | 深圳科士达科技股份有限公司 | Test system of inversion boosting equipment |
| CN114264900B (en) * | 2021-11-25 | 2024-04-16 | 深圳科士达新能源有限公司 | Test system of inversion boosting equipment |
| CN115825633A (en) * | 2023-02-14 | 2023-03-21 | 深圳市首航新能源股份有限公司 | Assessment method and device of photovoltaic inverter complete machine test system and upper computer |
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