CN222191529U - A photovoltaic collector circuit energy-saving cabinet - Google Patents
A photovoltaic collector circuit energy-saving cabinet Download PDFInfo
- Publication number
- CN222191529U CN222191529U CN202420724465.0U CN202420724465U CN222191529U CN 222191529 U CN222191529 U CN 222191529U CN 202420724465 U CN202420724465 U CN 202420724465U CN 222191529 U CN222191529 U CN 222191529U
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- Prior art keywords
- cabinet
- current transformer
- isolating switch
- photovoltaic collector
- photovoltaic
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- 238000009423 ventilation Methods 0.000 claims description 10
- 238000010248 power generation Methods 0.000 description 4
- 230000005611 electricity Effects 0.000 description 3
- 238000004134 energy conservation Methods 0.000 description 3
- 230000005284 excitation Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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Abstract
The utility model relates to the technical field of photovoltaic power stations and provides a photovoltaic current collection circuit energy-saving cabinet which comprises a cabinet body, wherein a first connecting piece penetrates through the front wall of the cabinet body, a second connecting piece penetrates through the rear wall of the cabinet body, the first connecting piece is connected with one end of a second isolating switch, the other end of the second isolating switch is respectively connected with one end of a PT fuse, one end of the first isolating switch and one end of a main loop contactor, the other end of the main loop contactor is connected with one end of a resistor, the other end of the resistor is connected with the first end of a second current transformer, the second end of the second current transformer is connected with the first end of the first current transformer, the second end of the first current transformer is connected with a second connecting piece, the other end of the PT fuse is connected with a voltage transformer, and the other end of the first isolating switch is connected with the third end of the second current transformer.
Description
Technical Field
The utility model relates to the technical field of photovoltaic power stations, in particular to an energy-saving cabinet for a photovoltaic current collecting circuit.
Background
The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.
In the current operation photovoltaic power station, no-load loss of a large-capacity photovoltaic step-up transformer is a great difficulty which puzzles the economic operation of the large-capacity photovoltaic step-up transformer, the power generation operation period of a current collecting circuit of the domestic photovoltaic power station is generally 8:30-16:00, the rest period is no-load self-loss period, and the occupied ratio is close to 2/3. The current collecting circuit is composed of a transformer and a cable, the loss of the standby state is mainly the no-load loss and the cable loss of the transformer, and the no-load loss electricity quantity per year is about 11 ten thousand degrees electricity by taking a standard 10 megawatt current collecting circuit as an example, and is at least 110 ten thousand degrees electricity by a 100MW photovoltaic power station.
The current photovoltaic power station uses solid insulated cable in a large number, and electric capacity is very big, and under the condition that the case became no-load operation night, the system takes place no-load harmonic easily, produces resonance overvoltage, and then leads to current energy-conserving cabinet explosion arrester, explodes the cable head, burns out the condition of PT and take place sometimes, not only brings huge economic loss for the enterprise, has still seriously influenced the normal power generation of system.
Disclosure of utility model
In order to solve the technical problems in the background technology, the utility model provides the photovoltaic current collection circuit energy-saving cabinet.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
The first aspect of the utility model provides a photovoltaic collector line energy-saving cabinet.
The photovoltaic current collection circuit energy-saving cabinet comprises a cabinet body, wherein a first connecting piece penetrates through the front wall of the cabinet body, a second connecting piece penetrates through the rear wall of the cabinet body, the first connecting piece is connected with one end of a second isolating switch, the other end of the second isolating switch is respectively connected with one end of a PT fuse, one end of the first isolating switch and one end of a main loop contactor, the other end of the main loop contactor is connected with one end of a resistor, the other end of the resistor is connected with the first end of a second current transformer, the second end of the second current transformer is connected with the first end of the first current transformer, the second end of the first current transformer is connected with the second connecting piece, the other end of the PT fuse is connected with a voltage transformer, and the other end of the first isolating switch is connected with the third end of the second current transformer.
Further, a box body is arranged on the front wall in the cabinet body.
Further, a controller is arranged in the box body and is respectively connected with the voltage transformer, the first current transformer, the second current transformer, the main loop contactor and the first isolating switch.
Further, the second disconnecting switch is also connected with a parallel network high-voltage circuit breaker.
Further, the first connecting piece is connected with the high-voltage switch cabinet.
Further, the second connecting piece is connected with a photovoltaic step-up transformer.
Further, a plurality of ventilation windows are arranged on the side wall of the cabinet body and the front wall of the cabinet body, and ventilation holes are formed in the ventilation windows.
Further, a handle is further arranged on the ventilating window.
Further, an electromagnetic lock is arranged on the cabinet door.
Further, the side wall of the cabinet body is also provided with an illuminating lamp.
Compared with the prior art, the utility model has the beneficial effects that:
The closing operation of the photovoltaic current collection line energy-saving cabinet is performed in the early morning, the opening operation is performed in the evening, and at the moment, the loop has only weak current, even zero current. The operation has no impact on a loop and no influence on power generation. The operation process is provided with an automatic operation controller, and the set closing time and opening time can be selected to operate according to the requirement.
The built-in resistor R1 of the photovoltaic collector line energy-saving cabinet is used as an excitation elimination device, so that excitation current generated by on-off of a transformer can be completely eliminated, no impact is caused on the transformer, an upper-level switch and a collector line, and the photovoltaic collector line energy-saving cabinet is safe and reliable. The photovoltaic current collection line energy-saving cabinet is provided with a plurality of operation modes, and is controlled by the built-in circuit to be automatically switched on and off at regular time under the conventional condition, and in-situ button switch on and off can be performed under the emergency condition, so that the safety of the line is not influenced.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model.
FIG. 1 is a block diagram of a photovoltaic collector line energy conservation cabinet shown in the present utility model;
fig. 2 is a front view of the photovoltaic collector line energy conservation cabinet of the present utility model;
FIG. 3 is a side view of the photovoltaic collector line energy conservation cabinet of the present utility model;
The three-phase alternating current transformer comprises a G1, a second isolating switch, a DL1, a main loop contactor, a DL2, a first isolating switch, an R2, a PT fuse, a PT1, a voltage transformer, a KZQ, a controller, an R1, a resistor, a CT2, a second current transformer, a CT1 and a first current transformer.
Detailed Description
The utility model will be further described with reference to the drawings and examples.
It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the utility model. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present utility model. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
Example 1
As shown in fig. 1, 2 and 3, the embodiment provides an energy-saving cabinet for a photovoltaic collector line, which comprises a cabinet body, wherein a first connecting piece penetrates through the front wall of the cabinet body, a second connecting piece penetrates through the rear wall of the cabinet body, the first connecting piece is connected with one end of a second isolating switch G1, the other end of the second isolating switch G1 is respectively connected with one end of a PT fuse R2, one end of a first isolating switch DL2 and one end of a main loop contactor DL1, the other end of the main loop contactor DL1 is connected with one end of a resistor R1, the other end of the resistor R1 is connected with the first end of a second current transformer CT2, the second end of the second current transformer CT2 is connected with the first end of the first current transformer CT1, the second end of the first current transformer CT1 is connected with the second connecting piece, the other end of the PT fuse R2 is connected with a voltage transformer PT1, and the other end of the first isolating switch DL2 is connected with the third end of the second current transformer CT 2.
In some embodiments, a box is provided on the front wall of the cabinet.
In some embodiments, a controller KZQ is disposed in the box, and the controller KZQ is respectively connected to the voltage transformer PT1, the first current transformer CT1, the second current transformer CT2, the main loop contactor DL1, and the first isolating switch DL2.
In some embodiments, the second disconnector G1 is also connected to a parallel network high voltage circuit breaker.
In some embodiments, the first connector is connected to a high voltage switchgear.
In some embodiments, the second connector is connected to a photovoltaic step-up transformer.
In some embodiments, a plurality of ventilation windows are arranged on the side wall of the cabinet body and the front wall of the cabinet body, and ventilation holes are formed in the ventilation windows.
In some embodiments, a pull handle is further provided on the louver.
In some embodiments, an electromagnetic lock is provided on the cabinet door.
In some embodiments, a lighting lamp is also arranged on the side wall of the cabinet body.
The energy-saving cabinet system mainly comprises vacuum contactors, controllers, current transformers, voltage transformers, fuses, isolating switches, resistors and the like. The common energy-saving cabinet has no controller and cannot realize intelligent control. The closing operation of the energy-saving cabinet is performed in the early morning, the opening operation is performed in the evening, and at the moment, the loop has only weak current, even zero current. The operation has no impact on a loop and no influence on power generation. The operation process is provided with an automatic operation controller, and the set closing time and opening time can be selected to operate according to the requirement.
The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420724465.0U CN222191529U (en) | 2024-04-09 | 2024-04-09 | A photovoltaic collector circuit energy-saving cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420724465.0U CN222191529U (en) | 2024-04-09 | 2024-04-09 | A photovoltaic collector circuit energy-saving cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN222191529U true CN222191529U (en) | 2024-12-17 |
Family
ID=93827611
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202420724465.0U Active CN222191529U (en) | 2024-04-09 | 2024-04-09 | A photovoltaic collector circuit energy-saving cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN222191529U (en) |
-
2024
- 2024-04-09 CN CN202420724465.0U patent/CN222191529U/en active Active
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