CN116879651A - Electrical performance test power supply device shared by high-power photovoltaic inverter and PCS - Google Patents
Electrical performance test power supply device shared by high-power photovoltaic inverter and PCS Download PDFInfo
- Publication number
- CN116879651A CN116879651A CN202310798198.1A CN202310798198A CN116879651A CN 116879651 A CN116879651 A CN 116879651A CN 202310798198 A CN202310798198 A CN 202310798198A CN 116879651 A CN116879651 A CN 116879651A
- Authority
- CN
- China
- Prior art keywords
- power supply
- switch
- parallel
- discrete
- performance test
- 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.)
- Pending
Links
- 238000011056 performance test Methods 0.000 title claims abstract description 28
- 238000004891 communication Methods 0.000 claims description 5
- 238000012360 testing method Methods 0.000 abstract description 28
- 238000013461 design Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- RGNPBRKPHBKNKX-UHFFFAOYSA-N hexaflumuron Chemical compound C1=C(Cl)C(OC(F)(F)C(F)F)=C(Cl)C=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F RGNPBRKPHBKNKX-UHFFFAOYSA-N 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/003—Environmental or reliability tests
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/28—Testing of electronic circuits, e.g. by signal tracer
- G01R31/2801—Testing of printed circuits, backplanes, motherboards, hybrid circuits or carriers for multichip packages [MCP]
- G01R31/2806—Apparatus therefor, e.g. test stations, drivers, analysers, conveyors
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- General Engineering & Computer Science (AREA)
- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
The invention relates to an electrical performance test power supply device shared by a high-power photovoltaic inverter and a PCS (power distribution system), which comprises a main switch, a discrete alternating current power supply module, a cabinet body, a first parallel switch, a first discrete terminal group, a discrete direct current power supply module, a second parallel switch and a second discrete terminal group; the split alternating current power supply module is connected with the main switch; the first parallel switch can carry out parallel operation on the split alternating current power supply module to output alternating current; the first discrete terminal group performs sub-division output alternating current on the discrete alternating current power supply module; the split direct current power supply module is connected with the main switch; the second parallel switch performs parallel operation on the split DC power supply module to output DC; the second split terminal group outputs direct current to the split direct current power supply module. Compared with the prior art, the invention is suitable for electrical performance test shared by high-power photovoltaic inverter-PCS, can improve the efficiency and accuracy of the test, and provides powerful support for technicians in a laboratory.
Description
Technical Field
The invention relates to an electrical performance test power supply device, in particular to an electrical performance test power supply device shared by a high-power photovoltaic inverter and a PCS.
Background
Photovoltaic inverters and PCS are a primary device that connects a photovoltaic power generation system to a power grid, both of which have the function of converting direct current to alternating current. However, since the photovoltaic inverter and the PCS are power electronic devices in nature, different degrees of influence can be exerted on the power grid, which has great significance for the safety and effectiveness of the photovoltaic power generation system. Therefore, it is necessary to perform electrical performance testing in conjunction with the high power photovoltaic inverter and PCS.
However, when the electrical performance test is performed by the high-power photovoltaic inverter and the PCS together, the following drawbacks exist in the prior art:
1. the test equipment is costly. The traditional testing equipment has higher price and is generally only suitable for the low-power testing requirement, and tests the high-power photovoltaic inverter and PCS, so that the traditional equipment has high price and limits the wide application.
2. The safety of the test process is difficult to ensure. High power photovoltaic inverters and PCS require constant power supply during operation, which can affect the safety of electrical and other equipment if the power supply is unstable or is interrupted. The conventional test equipment cannot effectively solve the problem and lacks safety protection measures.
Therefore, a researcher is required to solve the above problems.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide the electrical performance test power supply device shared by the high-power photovoltaic inverter and the PCS, which is suitable for testing the electrical performance shared by the high-power photovoltaic inverter and the PCS, can improve the efficiency and the accuracy of the test and provides powerful support for engineers and technicians in a laboratory.
The aim of the invention can be achieved by the following technical scheme:
the invention provides an electrical performance test power supply device shared by a high-power photovoltaic inverter and a PCS (power distribution system), which comprises a main switch, a discrete alternating current power supply module, a cabinet body, a first parallel switch, a first discrete terminal group, a discrete direct current power supply module, a second parallel switch and a second discrete terminal group, wherein the main switch, the discrete alternating current power supply module, the cabinet body, the first parallel switch, the first discrete terminal group, the discrete direct current power supply module, the second parallel switch and the second parallel terminal group are in particular as follows:
the main switch is connected with an external power supply line;
the discrete alternating current power supply module is connected with the main switch;
the first parallel switch is arranged in the cabinet body and can carry out parallel operation on the split alternating current power supply module to output alternating current;
the first discrete terminal group is arranged on the cabinet body and can output alternating current by extension of the discrete alternating current power supply module;
the discrete direct current power supply module is connected with the main switch;
the second parallel switch is arranged in the cabinet body and can carry out parallel operation on the split direct-current power supply module to output direct current;
the second split terminal group is arranged on the cabinet body and can output direct current to the split direct current power supply module in a split mode.
Further, the first parallel switch is connected with each alternating current power supply in the discrete alternating current power supply module respectively.
Further, the second parallel switch is connected with each direct current power supply in the discrete direct current power supply module respectively.
Further, the output end of the first parallel switch is connected with an alternating current parallel output terminal, and the output end of the second parallel switch is connected with a direct current parallel output terminal.
Further, the alternating current parallel operation output terminal and the direct current parallel operation output terminal are both arranged on the cabinet body.
Further, the electrical performance test power supply device further comprises an anti-islanding power supply, wherein the input end of the anti-islanding power supply is connected with the main switch, and the output end of the anti-islanding power supply is connected with the AC parallel operation output terminal.
Further, a transformer is connected between the alternating current parallel operation output terminal and the first parallel operation switch.
Further, the output end of the anti-islanding power supply is connected with the transformer.
Further, an island access switch is arranged at the output end of the island-preventing power supply.
Further, the electrical performance test power supply device further comprises an upper computer, wherein the upper computer is in communication connection with the main switch, the output end and the input end switch of the discrete alternating current power supply module, the first parallel switch, the output end and the input end switch of the discrete direct current power supply module and the second parallel switch.
Compared with the prior art, the invention has the following technical advantages: .
1) And the electric performance test power supply device shared by the high-power photovoltaic inverter and the PCS is realized. The invention adopts the components such as the discrete alternating current power supply module, the discrete direct current power supply module, the first parallel operation switch, the second parallel operation switch and the like, can realize the parallel operation and the extension output of different power supply modules, and is suitable for testing high-power equipment.
2) And simulating an island power supply scene. The design of the anti-islanding power supply can simulate an islanding power supply scene which occurs when a photovoltaic inverter or PCS acts, and the test of equipment in a laboratory environment is realized. The implementation of the function enables the test result to be more accurate and reliable, and can help related personnel to better know the problems possibly encountered by the equipment in actual operation.
3) And (5) remote control. The invention is equipped with the upper computer, and can realize remote control and adjustment of the main switch, the alternating current power supply module, the direct current power supply module, the parallel operation switch and the like through a network, thereby facilitating test operation.
4) Is safe and reliable. The invention adopts a multi-stage safety protection function, avoids safety problems such as overcurrent, overvoltage and the like, and ensures the use safety. In addition, the anti-islanding power supply can provide additional power supply reserve, so that the accuracy of the test cannot be affected due to power interruption during the test.
5) Flexibility. The scheme has adaptability and flexibility due to multiple designs, such as the establishment of an alternating current parallel operation output terminal and a direct current parallel operation output terminal, and can be suitable for different test requirements and application scenes.
Drawings
Fig. 1 is a schematic structural diagram of an electrical performance test power supply device shared by a high-power photovoltaic inverter and a PCS in the present technical solution.
In the figure: 1. the device comprises a main switch, a discrete alternating current power supply module, a cabinet body, a first parallel switch, a first discrete terminal group, a discrete direct current power supply module, a second parallel switch, an alternating current parallel output terminal, a direct current parallel output terminal, an anti-islanding power supply, a transformer, an islanding access switch, an upper computer, an equipment to be detected, and a detection device, wherein the main switch, the discrete alternating current power supply module, the first parallel switch, the second parallel switch, the first discrete terminal group, the discrete direct current power supply module, the second parallel switch, the alternating current parallel output terminal, the third parallel switch, the fourth parallel switch, the third parallel switch, the islanding power supply, the fourth parallel switch, the transformer, the 13 and the islanding access switch.
Detailed Description
According to the technical scheme, the special testing device is designed, the technical means of anti-islanding power supply, remote control, safety, reliability, flexibility and the like are adopted, the difficult problem existing in the traditional testing equipment is solved, the influence of power supply interruption in the testing process can be avoided, accurate and reliable data can be provided, and a reliable testing solution is provided for related partners.
The invention will now be described in detail with reference to the drawings and specific examples. Features such as a part model, a material name, a connection structure, a control method, an algorithm and the like which are not explicitly described in the technical scheme are all regarded as common technical features disclosed in the prior art.
The invention relates to an electrical performance test power supply device shared by a high-power photovoltaic inverter-PCS, which comprises a main switch 1, a discrete alternating current power supply module 2, a cabinet 3, a first parallel switch 4, a first discrete terminal group 5, a discrete direct current power supply module 6, a second parallel switch 7 and a second discrete terminal group 8, wherein the specific reference is shown in fig. 1. The invention adopts the components such as the discrete alternating current power supply module, the discrete direct current power supply module, the first parallel operation switch, the second parallel operation switch and the like, can realize the parallel operation and the extension output of different power supply modules, and is suitable for testing high-power equipment.
The main switch 1 is connected with an external power supply line; and the discrete alternating current power supply module 2 is connected with the main switch 1.
The cabinet body 3 is a closed structure and is used for setting a switch and a terminal, and the alternating current parallel operation output terminal 9 and the direct current parallel operation output terminal 10 are both arranged on the cabinet body 3. The second parallel switch 7 is disposed in the cabinet 3, and is capable of parallel operation of the split dc power module 6 to output dc power. The second parallel switch 7 is connected to each dc power supply of the discrete dc power supply modules 6.
The first parallel switch 4 is provided in the cabinet 3, and is capable of parallel operation of the split ac power supply module 2 to output ac power. The first parallel switch 4 is connected to each ac power supply of the discrete ac power supply modules 2. The output end of the first parallel operation switch 4 is connected with an alternating current parallel operation output terminal 9, and the output end of the second parallel operation switch 7 is connected with a direct current parallel operation output terminal 10.
The first discrete terminal group 5 is arranged on the cabinet body 3 and can output alternating current to the discrete alternating current power supply module 2 in a split mode; the discrete direct current power supply module 6 is connected with the main switch 1; the second split terminal set 8 is provided on the cabinet 3, and can output direct current to the split direct current power supply module 6 in a split mode.
The electric performance test power supply device further comprises an anti-islanding power supply 11, wherein the input end of the anti-islanding power supply 11 is connected with the main switch 1, and the output end of the anti-islanding power supply 11 is connected with the AC parallel machine output terminal 9. A transformer 12 is connected between the ac parallel output terminal 9 and the first parallel switch 4. The output end of the anti-islanding power supply 11 is connected with the transformer 12. An island access switch 13 is arranged at the output end of the island-preventing power supply 11. The design of the anti-islanding power supply can simulate an islanding power supply scene which occurs when a photovoltaic inverter or PCS acts, and the test of equipment in a laboratory environment is realized. The implementation of the function enables the test result to be more accurate and reliable, and can help related personnel to better know the problems possibly encountered by the equipment in actual operation.
The electric performance test power supply device further comprises an upper computer 14, wherein the upper computer 14 is in communication connection with the main switch 1, the output end and the input end of the discrete type alternating current power supply module 2, the first parallel switch 4, the output end and the input end of the discrete type direct current power supply module 6 and the second parallel switch 7. The host computer 14 is a PC or remote client in communication with each switch. The invention is equipped with the upper computer 14, and can realize remote control and adjustment of a main switch, an alternating current power supply module, a direct current power supply module, a parallel switch and the like through a network, thereby facilitating test operation.
In the technical scheme, the discrete alternating current power supply module 2, the discrete direct current power supply module 6 and the anti-islanding power supply 11 all comprise high-quality rectifiers so as to ensure stable output voltage and current of the circuit and avoid generation of current harmonic waves and noise. Meanwhile, accurate current and voltage sensors can be adopted, and the electrical parameters of the circuit can be monitored in real time, so that the output capacity is ensured to meet the specification requirements.
The switch can be a remote electric switch and is communicated with the upper computer equipment in a wireless communication mode. The remote electric switch model can be SONET, TP-Link HS100, etc.
The device to be detected 15 can be connected with the target terminal according to the test power requirement and connected with the corresponding test detection device to realize the detection of the electrical performance, and the related device and the test method are not part of the conception of the scheme, and all adopt the existing test means and devices, and are not repeated.
The previous description of the embodiments is provided to facilitate a person of ordinary skill in the art in order to make and use the present invention. It will be apparent to those skilled in the art that various modifications can be readily made to these embodiments and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above-described embodiments, and those skilled in the art, based on the present disclosure, should make improvements and modifications without departing from the scope of the present invention.
Claims (10)
1. An electrical performance test power feeding device shared by a high-power photovoltaic inverter and a PCS, which is characterized by comprising:
the main switch (1) is connected with an external power supply circuit;
the discrete alternating current power supply module (2) is connected with the main switch (1);
a cabinet body (3);
the first parallel switch (4) is arranged in the cabinet body (3) and can carry out parallel operation on the split type alternating current power supply module (2) to output alternating current;
the first discrete terminal group (5) is arranged on the cabinet body (3) and can be used for carrying out sub-division output alternating current on the discrete alternating current power supply module (2);
a discrete direct current power supply module (6) connected with the main switch (1);
the second parallel operation switch (7) is arranged in the cabinet body (3) and can carry out parallel operation on the split type direct current power supply module (6) to output direct current;
the second split terminal group (8) is arranged on the cabinet body (3) and can output direct current to the split direct current power supply module (6) in a split mode.
2. The electrical performance test power feeding apparatus as set forth in claim 1, wherein said first parallel switch (4) is connected to each of said discrete ac power supply modules (2).
3. The electrical performance test power feeding apparatus as set forth in claim 2, wherein said second parallel switch (7) is connected to each of said discrete dc power supply modules (6).
4. The electrical performance test power supply device shared by the high-power photovoltaic inverter and the PCS according to claim 1, wherein the output end of the first parallel switch (4) is connected with an ac parallel output terminal (9), and the output end of the second parallel switch (7) is connected with a dc parallel output terminal (10).
5. The electrical performance test power supply device shared by the high-power photovoltaic inverter and the PCS as claimed in claim 4, wherein the AC parallel output terminal (9) and the DC parallel output terminal (10) are both arranged on the cabinet body (3).
6. The electrical performance test power feeding apparatus as set forth in claim 4, wherein said electrical performance test power feeding apparatus further comprises an anti-islanding power supply (11), wherein an input end of said anti-islanding power supply (11) is connected to said main switch (1), and an output end of said anti-islanding power supply (11) is connected to said ac parallel output terminal (9).
7. The electrical performance test power supply device shared by the high-power photovoltaic inverter and the PCS as claimed in claim 6, wherein a transformer (12) is connected between the AC parallel output terminal (9) and the first parallel switch (4).
8. The electrical performance test power feeding apparatus as set forth in claim 7, wherein said anti-islanding power supply (11) has its output connected to said transformer (12).
9. The electrical performance test power feeding apparatus as set forth in claim 7, wherein said anti-islanding power supply (11) has an islanding access switch (13) at its output.
10. The electrical performance test power feeding device for high-power photovoltaic inverter-PCS according to claim 1, wherein the electrical performance test power feeding device further comprises an upper computer (14), wherein the upper computer (14) is in communication connection with the main switch (1), the output end and input end switch of the discrete ac power module (2), the first parallel switch (4), the output end and input end switch of the discrete dc power module (6) and the second parallel switch (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310798198.1A CN116879651A (en) | 2023-06-30 | 2023-06-30 | Electrical performance test power supply device shared by high-power photovoltaic inverter and PCS |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310798198.1A CN116879651A (en) | 2023-06-30 | 2023-06-30 | Electrical performance test power supply device shared by high-power photovoltaic inverter and PCS |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116879651A true CN116879651A (en) | 2023-10-13 |
Family
ID=88259599
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310798198.1A Pending CN116879651A (en) | 2023-06-30 | 2023-06-30 | Electrical performance test power supply device shared by high-power photovoltaic inverter and PCS |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116879651A (en) |
-
2023
- 2023-06-30 CN CN202310798198.1A patent/CN116879651A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11088655B2 (en) | Photovoltaic solid-state transformer, photovoltaic inverter system and bidirectional high-voltage converter | |
| US9431922B2 (en) | ARC fault protection for power conversion | |
| EP3264550B1 (en) | Access control method for parallel direct current power supplies and device thereof | |
| US11217999B2 (en) | Photovoltaic power generation inverter system | |
| CN101551446B (en) | Energy feedback power source aging system | |
| CN103545926B (en) | A kind of distributed power source grid connection interface device | |
| US20140077609A1 (en) | Serially connected micro-inverter system with trunk and drop cabling | |
| US9780561B2 (en) | Solar energy generation system, measurement module and positioning method | |
| CN102882225A (en) | Photovoltaic system based plug and play power management system of user side distributed power sources | |
| WO2024198412A1 (en) | Energy storage system and power supply system | |
| CN104201715A (en) | Multi-parallel photovoltaic power generation system potential-induced-attenuation-proof circuit and voltage adjusting device | |
| CN220509048U (en) | Electrical performance test power supply device shared by high-power photovoltaic inverter and PCS | |
| CN117335557A (en) | Electric power measurement and control device and power generation system | |
| CN116879651A (en) | Electrical performance test power supply device shared by high-power photovoltaic inverter and PCS | |
| CN108281983B (en) | Photovoltaic inverter monitoring control system and method based on power management bus | |
| US9960707B2 (en) | Parallel power converter | |
| CN213990156U (en) | Power grid power adjusting equipment and system | |
| CN105301404A (en) | Solar cell simulator used for photovoltaic grid-connected inverter detection | |
| CN108832892B (en) | PID effect resistance-based IV measurement method and device for photovoltaic module | |
| EP4418485A1 (en) | Power supply system and conversion method | |
| CN104135073A (en) | Distributed solar grid-connected control box and control method | |
| CN104201713A (en) | Potential induced degradation resistance circuit for multi-machine parallel connection photovoltaic power generation system and pressure regulating device | |
| CN205103667U (en) | Distributing type roof photovoltaic power generation intelligence energy storage system | |
| CN220755106U (en) | Constant current light modulator | |
| WO2021253257A1 (en) | Power energy storage system and energy storage power supply system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |