CN208508887U - Photovoltaic combining inverter short-circuit test system - Google Patents
Photovoltaic combining inverter short-circuit test system Download PDFInfo
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- CN208508887U CN208508887U CN201821127656.XU CN201821127656U CN208508887U CN 208508887 U CN208508887 U CN 208508887U CN 201821127656 U CN201821127656 U CN 201821127656U CN 208508887 U CN208508887 U CN 208508887U
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- contactor
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- fault control
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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Abstract
The utility model provides a kind of photovoltaic combining inverter short-circuit test system, including major loop and control loop, major loop includes AC simulation source, AC simulation source breaker, RLC load, AC input control contactor, tested photovoltaic combining inverter, A phase fault control contactor, B phase fault control contactor, C phase fault control contactor, A/B/C-N phase fault control contactor；Control loop includes contactor power supply, A phase fault control switch, B phase fault control switchs, C phase fault control switchs, switch, ABC/ABCN is released the control after AC input control switch and short circuit while fault control switch, A/B/C-N fault control switch.The utility model is switched by light current switch control forceful electric power, realizes the demand of short-circuit test, can utmostly simulate real short circuit situation, and highly effective and safe, easy to operate, raising testing efficiency.
Description
Technical field
The utility model belongs to electric test equipment technical field, is related to a kind of for carrying out photovoltaic combining inverter short circuit survey
The system of examination.
Background technique
Photovoltaic generating system refers to the electricity generation system it is not necessary that luminous energy to be directly changed into electric energy by thermal process, because of its cleaning
Environmental protection, and application form is flexibly simple, is the new energy resources system that China advocates application energetically.Photovoltaic combining inverter is photovoltaic hair
One of core component of electric system, security performance concerning whole system whether stable operation.Previous photovoltaic combining inverter exists
When test short circuit directly with breaker or other be shorted modes, neither safety operation is also comparatively laborious in test process, can not
Realize safe and reliable short-circuit test.
Summary of the invention
To solve the above problems, the utility model discloses a kind of photovoltaic combining inverter short-circuit test systems.
In order to reach the goals above, the utility model provides the following technical solutions:
A kind of photovoltaic combining inverter short-circuit test system, including major loop and control loop, the major loop include AC
Simulation source, AC simulation source breaker, RLC load, AC input control contactor, tested photovoltaic combining inverter, A phase fault control
Contactor, B phase fault control contactor, C phase fault control contactor, A/B/C-N phase fault control contactor, wherein AC mould
Quasi- source output is connected with the control breaker input of AC simulation source, and it is defeated with RLC load, AC respectively that AC simulation source controls breaker output
Entering control contactor input connection, the ABC three-phase of AC input control contactor output is used to connect tested photovoltaic combining inverter,
The ABC three-phase of AC input control contactor output is also connect with the input of A, B, C three-phase shortcircuit control contactor respectively, A, B, C
The output of three-phase shortcircuit control contactor is connected to the outlet side of A/B/C-N fault control contactor, A/B/C-N fault control
The input of contactor is connect after being shorted with N line；The control loop include contactor power supply, A phase fault control switch, B phase it is short
It is short simultaneously that switch, ABC/ABCN are released the control after way control switch, C phase fault control switch, AC input control switch and short circuit
Way control switch, A/B/C-N fault control switch.
Further, each contactor includes contactor line packet and auxiliary contact, work of the line packet in corresponding control switch
It is directly connect with contactor power cathode with the cathode of lower actuation, all contactor line packets.
Further, to release the control switch, B phase after A phase fault control switch, AC input control switch and short circuit short
Way control switch, C phase fault control switch, A/B/C-N fault control switch are point driving switch.
Compared with prior art, the utility model is had the following advantages and beneficial effects:
It is switched by light current switch control forceful electric power, realizes the demand of short-circuit test, can utmostly simulate real short circuit
Situation, and highly effective and safe, easy to operate, raising testing efficiency.
Detailed description of the invention
Fig. 1 is major loop connection schematic diagram in photovoltaic combining inverter short-circuit test system provided by the utility model.
Fig. 2 is control loop connection schematic diagram in photovoltaic combining inverter short-circuit test system provided by the utility model.
Specific embodiment
With reference to the accompanying drawings and detailed description, the utility model is furtherd elucidate, it should be understood that following specific embodiment parties
Formula is merely to illustrate the utility model rather than limitation the scope of the utility model.It should be noted that making in being described below
Word "front", "rear", "left", "right", "up" and "down" refer to that the direction in attached drawing, word "inner" and "outside" respectively refer to
Be directed towards or far from geometric center of specific component direction.
As shown in Figure 1 and Figure 2, a kind of photovoltaic combining inverter short-circuit test system provided by the utility model, including lead back
The AC simulation source on road, AC simulation source breaker, RLC load, AC input control contactor, tested photovoltaic combining inverter, A phase
Fault control contactor, B phase fault control contactor, C phase fault control contactor, A/B/C-N phase fault control contactor, with
And release the control switch after the A phase fault control switch of control loop, AC input control switch and short circuit, B phase fault control is opened
It closes, fault control switchs (short-circuit simultaneously for controlling ABC/ABCN), contactor power supply, C phase fault control to ABC/ABCN simultaneously
Switch, A/B/C-N fault control switch (for controlling A to N short circuit, B is to N short circuit, and C is to N short circuit) composition.
Wherein major loop connection type is as follows: the output of AC simulation source is connected with the control breaker input of AC simulation source, AC mould
Quasi- source control breaker output is connected with RLC load, the input of AC input control contactor respectively, the output of AC input control contactor
ABC tri- be connected to tested photovoltaic combining inverter, while the A phase and A phase fault control of AC input control contactor output
The input connection for inputting connection, B phase and B phase fault control contactor of contactor, C phase are defeated with C phase fault control contactor
Enter connection, the output of A, B, C three-phase shortcircuit control contactor is connected to the outlet side of A/B/C-N fault control contactor, A/B/
The input of C-N fault control contactor connect (the N line in this test macro is uncontrolled) with N line after being shorted
Each contactor includes contactor line packet and auxiliary contact, and line packet is attracted under the action of control switch.It is being
Other control switches are point driving switch in addition to ABC/ABCN simultaneously fault control switch in control loop of uniting, all contactor lines
The cathode of packet is directly connect with contactor power cathode.A, B, C three-phase shortcircuit contactor and A/B/C-N fault control contactor are equal
It is connected to ABC/ABCN fault control switch simultaneously.
It, will be on control loop contactor power supply when needing to test the short-circuit protection function of tested photovoltaic combining inverter
Electricity releases the control switch after crawl AC input control switch and short circuit at this time, and AC input contactor line packet is opened by crawl at this time
The COM-NO that switch is released the control after pass AC input control switch and short circuit obtains electric, major loop AC input control contactor actuation,
The power supply of AC input contactor line packet passes through the auxiliary contact COM-NO of AC input control contactor after actuation.When need to test certain two
When short-circuit between phase, by taking AB line to line fault as an example, then crawl A phase fault control switch, B phase fault control switch are needed, when this
A phase fault control contactor, B phase fault control contactor are attracted after two switch crawls, and photovoltaic grid-connected inversion is tested after actuation
Device AB two-phase is directly connected to form short circuit, thus reach the demand of short-circuit test, crawl AC input control switch after test
Switch is released the control after+short circuit so that A phase fault control contactor, the release of B phase fault control contactor, restore the shape to before testing
State can successively test other short-circuit test projects according to the operation rule of AB short-circuit test by test request at this time.
When needing to test certain with respect to short circuit between N, by taking AN line to line fault as an example, then crawl A phase fault control is needed to open
It closes, A/B/C-N fault control switch, A phase fault control contactor, A/B/C-N fault control connect after the two switch crawl
Tentaculum is attracted, and photovoltaic combining inverter AN two-phase is tested after actuation and is directly connected to form short circuit, to reach the need of short-circuit test
It asks, can successively test other with respect to N short-circuit test project according to the operation rule of AN short-circuit test by test request at this time.
When need to test ABC it is identical when short circuit when, by ABC/ABCN simultaneously short switch the contact A/B/C manual closing,
Any crawl A phase fault control switch or B phase fault control switch or C phase fault control switch.Since A phase fault control is opened
It closes, the NO of B phase fault control switch, C phase fault control switch is by ABC/ABCN connection, the one of control of any crawl
System switch, three contactor line packet COM are turned on positive pole, make corresponding A phase fault control contactor, B phase fault control
Contactor, C phase fault control contactor are attracted, the effect of short circuit when arrival ABC is identical.
When need to test ABCN it is identical when short circuit when, ABC/ABCN the contact A/B/C/N of short switch is closed manually simultaneously
It closes, any crawl A phase fault control switchs or B phase fault control switchs or C phase fault control switchs or A/B/C-N fault control
Switch.Due to A phase fault control switch, B phase fault control switch, C phase fault control switch, A/B/C-N fault control switch
NO by ABC/ABCN connection, any one of control switch of crawl, four contactor line packet COM are being turned on power supply just
Pole makes corresponding A phase fault control contactor, B phase fault control contactor, C phase fault control contactor, A/B/C-N short circuit
Control contactor is attracted, the effect of short circuit when arrival ABCN is identical.
Technological means disclosed in the utility model is not limited only to technological means disclosed in above embodiment, also
Including technical solution consisting of any combination of the above technical features.It should be pointed out that for the ordinary skill of the art
For personnel, without departing from the principle of this utility model, several improvements and modifications can also be made, these are improved and profit
Decorations are also considered as the protection scope of the utility model.
Claims (3)
1. a kind of photovoltaic combining inverter short-circuit test system, it is characterised in that: including major loop and control loop, the master is returned
Road includes AC simulation source, AC simulation source breaker, RLC load, AC input control contactor, tested photovoltaic combining inverter, A phase
Fault control contactor, B phase fault control contactor, C phase fault control contactor, A/B/C-N phase fault control contactor,
Middle AC simulation source output is connected with the control breaker input of AC simulation source, and it is negative with RLC respectively that AC simulation source controls breaker output
Carry, AC input control contactor input connection, AC input control contactor output ABC three-phase for connect be tested it is grid-connected
Inverter, the ABC three-phase of AC input control contactor output also connect with the input of A, B, C three-phase shortcircuit control contactor respectively
It connects, the output of A, B, C three-phase shortcircuit control contactor is connected to the outlet side of A/B/C-N fault control contactor, and A/B/C-N is short
The input of road control contactor is connect after being shorted with N line；The control loop include contactor power supply, A phase fault control switch,
It is same that switch, ABC/ABCN are released the control after B phase fault control switch, C phase fault control switch, AC input control switch and short circuit
When fault control switch, A/B/C-N fault control switch.
2. photovoltaic combining inverter short-circuit test system according to claim 1, it is characterised in that: each contactor wraps
The packet of line containing contactor and auxiliary contact, line packet are attracted under the action of corresponding control switch, and the cathode of all contactor line packets is straight
It connects and is connect with contactor power cathode.
3. photovoltaic combining inverter short-circuit test system according to claim 1, it is characterised in that: the A phase short circuit control
Switch, B phase fault control switch, C phase fault control switch, A/ are released the control after system switch, AC input control switch and short circuit
B/C-N fault control switch is point driving switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821127656.XU CN208508887U (en) | 2018-07-17 | 2018-07-17 | Photovoltaic combining inverter short-circuit test system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821127656.XU CN208508887U (en) | 2018-07-17 | 2018-07-17 | Photovoltaic combining inverter short-circuit test system |
Publications (1)
| Publication Number | Publication Date |
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| CN208508887U true CN208508887U (en) | 2019-02-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201821127656.XU Active CN208508887U (en) | 2018-07-17 | 2018-07-17 | Photovoltaic combining inverter short-circuit test system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111521928A (en) * | 2020-04-28 | 2020-08-11 | 阳光电源股份有限公司 | Grid-connected switch failure detection method and system of three-phase inverter |
-
2018
- 2018-07-17 CN CN201821127656.XU patent/CN208508887U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111521928A (en) * | 2020-04-28 | 2020-08-11 | 阳光电源股份有限公司 | Grid-connected switch failure detection method and system of three-phase inverter |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 210046 No. 99 Wenlan Road, Xianlin University Town, Xianlin Street, Qixia District, Nanjing, Jiangsu Province Patentee after: China national credit (Jiangsu) Testing Technology Co., Ltd Address before: 210000 Wenlan Road, Xianlin University Town, Xianlin Street, Qixia District, Nanjing, Jiangsu Province Patentee before: CQC-TRUSTED TESTING TECHNOLOGY Co.,Ltd. |
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| CP03 | Change of name, title or address |