CN210443393U - Auxiliary cooling system for main transformer of photovoltaic power station - Google Patents
Auxiliary cooling system for main transformer of photovoltaic power station Download PDFInfo
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- CN210443393U CN210443393U CN201921897666.6U CN201921897666U CN210443393U CN 210443393 U CN210443393 U CN 210443393U CN 201921897666 U CN201921897666 U CN 201921897666U CN 210443393 U CN210443393 U CN 210443393U
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- warning light
- temperature controller
- booster pump
- main transformer
- photovoltaic power
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Abstract
The utility model discloses a photovoltaic power plant owner becomes supplementary cooling system, including spraying system and electric control system, spraying system and electric control system spray electric connection, electric control system includes the temperature controller, the temperature controller is normally open type temperature controller, the temperature controller is established ties there is the solenoid valve, the solenoid valve is parallelly connected there is the booster pump, solenoid valve and booster pump are established ties respectively and are had auxiliary relay and contactor, electric control system electric connection has the warning light, the warning light includes that automatic operation warning light, manual operation warning light and booster pump stop the warning light. The temperature controller is used for monitoring the temperature of the main transformer, the cooling operation can be automatically carried out in time according to a temperature set value, the cooling operation can also be manually carried out, and the overtemperature operation of the main transformer of the photovoltaic power station in a high-temperature state in summer is relieved to a certain extent.
Description
Technical Field
The utility model relates to a transformer cooling technical field, concretely relates to photovoltaic power plant owner becomes supplementary cooling system.
Background
The cooling of the transformer is difficult because there is no rotational motion to bring the air flow inside it. The larger the capacity of the transformer, the larger the corresponding loss and heat generation, the more difficult the heat dissipation, and the more powerful cooling measures need to be taken. The cooling method of the current transformer can be divided into the following steps: oil immersion self-cooling type, oil immersion air-cooling type and forced oil circulation cooling type. In hot summer, due to the fact that the temperature of the external environment is high, the main transformer of the photovoltaic power station belongs to the peak period of power generation in the noon period, the load is large, and the temperature is close to the overtemperature warning line. If no external auxiliary cooling measures are taken, the main transformer is in a high-temperature operation state for a long time, the insulation aging of the main transformer can be accelerated in the operation state, and the emergency situations such as equipment faults and the like can be easily caused.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a photovoltaic power plant owner becomes supplementary cooling system to under the high condition of external environment temperature among the solution prior art, the problem of the unable timely cooling of photovoltaic power plant main transformer.
Photovoltaic power plant owner become supplementary cooling system, including spraying system and electric control system, spraying system and electric control system spray electric connection, electric control system includes the temperature controller, the temperature controller is normally open type temperature controller, the temperature controller is installed on main transformer shell, the temperature controller is established ties there is the solenoid valve, the solenoid valve is parallelly connected there is the booster pump, solenoid valve and booster pump are established ties respectively and are had auxiliary relay and contactor.
Preferably, the electric control system is provided with a button, and the button is connected with the temperature controller in parallel and used for manually controlling the spraying system.
Preferably, electrical system electric connection has the warning light, the warning light includes that automatic operation warning light, manual operation warning light and booster pump stop the warning light, and automatic operation warning light and manual operation warning light are parallelly connected the back and are established ties the booster pump and stop the warning light, automatic operation warning light and manual operation warning light are respectively established ties and are had relay in the middle, automatic operation warning light pass through relay in the middle with the temperature controller is connected, manual operation warning light pass through relay in the middle with the button is connected, the booster pump stop the warning light with the booster pump is parallelly connected.
Preferably, the spraying system includes trunk line, lateral conduit and shower head, a plurality of lateral conduits are connected to the trunk line, install a plurality of shower heads on the lateral conduit, the shower head is located around the main transformer, prolong the water flow direction and install quality of water clarification plant, booster pump and solenoid valve in proper order on the trunk line.
Preferably, the main pipeline and the branch pipeline are both made of PPR, the specification of the main pipeline is DN50, and the specification of the branch pipeline is DN 40.
The utility model has the advantages that: the system monitors the temperature of the main transformer by using the temperature controller, can automatically cool down in time according to a temperature set value, and also can manually cool down, thereby relieving the overtemperature operation of the main transformer of the photovoltaic power station in a high-temperature state in summer to a certain extent, and displaying the current working state of the cooling system by using the prompt lamp. The main conduit is supplied with DN50 and the branch conduit is supplied with DN40 to ensure adequate water pressure injection.
Drawings
Fig. 1 is a system diagram of the present invention.
Fig. 2 is a control schematic diagram of the present invention.
Wherein, the system comprises a booster pump 1, an automatic operation prompting lamp 2, a manual operation prompting lamp 3, a booster pump stop prompting lamp 4, a solenoid valve 5, a temperature controller normally open contact 6, a water quality purifying device 7, a main pipeline 8, a branch pipeline 9, a spray header 10 and a main transformer 11.
Detailed Description
The following detailed description of the embodiments of the present invention will be provided to help those skilled in the art understand the concept and technical solutions of the present invention more completely, accurately and deeply.
As shown in fig. 1 to 2, photovoltaic power plant owner becomes supplementary cooling system, including spraying system and electrical system, spraying system and electrical system spray electric connection, electrical system includes the temperature controller, the temperature controller is normally open type temperature controller, the temperature controller is installed on main transformer 11 shell, the temperature controller is established ties there is solenoid valve 5, solenoid valve 5 is parallelly connected there is booster pump 1, solenoid valve 5 and booster pump 1 establish ties respectively has auxiliary relay and contactor.
The electric control system is provided with a button, and the button is connected with the temperature controller in parallel and is used for manually controlling the spraying system.
The electrical system electric connection has the warning light, the warning light includes that automatic operation warning light 2, manual operation warning light 3 and booster pump stop warning light 4, and automatic operation warning light 2 establishes ties the booster pump with 3 parallelly connected backs of manual operation warning light and stops warning light 4, automatic operation warning light 2 and 3 respective series connection of manual operation warning light have auxiliary relay, automatic operation warning light 2 pass through auxiliary relay with the temperature controller is connected, manual operation warning light 3 pass through auxiliary relay with the button is connected, the booster pump stop warning light 4 with the booster pump is parallelly connected.
The spraying system comprises a main pipeline 8, branch pipelines 9 and spray headers 10, the main pipeline 8 is connected with a plurality of branch pipelines 9, a plurality of spray headers 10 are installed on the branch pipelines 9, the spray headers 10 are positioned around a main transformer 11, and water purification equipment 7, a booster pump 1 and a solenoid valve 5 are sequentially installed in the main pipeline along the water flowing direction. The main pipeline 8 and the branch pipelines 9 are both made of PPR, the specification of the main pipeline 8 is DN50, and the specification of the branch pipelines 9 is DN 40.
The utility model discloses a theory of operation and process are as follows:
the electric control system comprises a main circuit and a control circuit, wherein the main circuit comprises a first main branch and a second main branch which are connected in parallel, the first main branch and the second main branch are both connected with a breaker QF1 and a breaker QF2 in series, the breaker plays a role of protecting the circuit, a booster pump is arranged on the first main branch, the booster pump is connected with a normally open contact of a contactor KM in series, the second main branch comprises four branches which are connected in parallel, the four branches are respectively a first branch, a second branch, a third branch and a fourth branch, the normally open contact of an intermediate relay KA1 in the first branch is connected with a contactor KM in series, and the normally open contact of the intermediate relay KA1 is connected with the; a normally open contact of the intermediate relay KA1 in the branch II is connected in series with the automatic operation prompting lamp, and a normally open contact of the intermediate relay KA1 in the branch II is connected in series with the automatic operation prompting lamp; a normally open contact of the intermediate relay KA2 in the branch III is connected with the manual operation prompting lamp in series; and a normally open contact of the contactor KM in the branch four is connected with the booster pump stop prompting lamp in series.
The control circuit comprises four branches, wherein the four branches are respectively a solenoid valve branch, an automatic control branch I, a manual control branch and an automatic control circuit branch II, a normally open contact of the intermediate relay KA3 in the solenoid valve branch is connected with the solenoid valve in series, and a normally open button SB2 is connected with the normally open contact of the intermediate relay KA3 in parallel; a medium temperature controller normally-open contact of the automatic control branch, a normally-closed contact of the intermediate relay KA2 and a coil of the intermediate relay KA3 are sequentially connected in series, and the temperature controller normally-open contact is connected with a normally-open contact of the intermediate relay KA2 in parallel; a normally open button SB1 in the manual control branch, a normally closed contact of the intermediate relay KA1 and a coil of the intermediate relay KA2 are sequentially connected in series; the normally open contact of the medium temperature controller in the second automatic control branch, the normally closed contact of the intermediate relay KA2 and the coil of the intermediate relay KA1 are sequentially connected in series.
Under the initial state, the temperature controller monitors the temperature of the main transformer, the normally open contact in the temperature controller is disconnected, the indicator light that the booster pump stops is on, the automatic control function is used, the signal starting value of the temperature controller is set to 85 ℃, the signal closing value is set to 70 ℃, when the temperature controller detects that the temperature exceeds 85 ℃, the normally open contact of the temperature controller is closed, the coil of KA3 is electrified, the normally open contact of KA3 is closed, the electromagnetic valve is opened, the coil of KA1 is electrified, the normally open contact of KA1 is closed, the automatic operation indicator light is on, the coil of KM is electrified, the normally open contact of KM is closed, the booster pump is started, the normally closed contact of KM is disconnected, the booster pump stops the indicator light and extinguishes, water enters the branch pipeline through the booster pump after being purified by the water quality purifying equipment, the spray head cools the main transformer, the coil of KA3 loses the electricity, KA 3's normally open contact disconnection, the solenoid valve is closed, KA 1's coil loses the electricity, KA 1's normally open contact disconnection, the automatic operation warning light extinguishes, KM's coil loses the electricity, KM's normally open contact disconnection, the stop of booster pump, KM's normally closed contact is closed, the booster pump stops the warning light and lights.
By using a manual control function, closing a normally open button SB1 and a normally open button SB2, opening a solenoid valve, electrifying a coil of KA2, closing a normally open contact of KA2, turning on a manual operation prompting lamp, electrifying a coil of KM, closing the normally open contact of KM, starting a booster pump, disconnecting the normally closed contact of KM, stopping the booster pump, turning off the prompting lamp, and spraying water to a main transformer by a spraying system to cool; disconnection normally open button SB1 and SB2, the solenoid valve is closed, and KA 2's coil loses the electricity, and KA 2's normally open contact disconnection, manual operation warning light extinguish, and KM's coil loses the electricity, and KM's normally open contact disconnection, the booster pump stops, and KM's normally closed contact is closed, and the booster pump stops the warning light and lights.
The above description is made for the exemplary purposes with reference to the accompanying drawings, and it is obvious that the present invention is not limited by the above embodiments, and various insubstantial improvements can be made without modification to the present invention.
Claims (5)
1. Photovoltaic power plant owner becomes supplementary cooling system, its characterized in that: including spraying system and electric control system, spraying system and electric control system spray electric connection, electric control system includes the temperature controller, the temperature controller is normally open type temperature controller, the temperature controller is installed on main transformer (11) shell, the temperature controller is established ties and is had solenoid valve (5), solenoid valve (5) are parallelly connected to have booster pump (1), solenoid valve (5) and booster pump (1) are established ties respectively and are had auxiliary relay and contactor.
2. The auxiliary cooling system of the main transformer of the photovoltaic power station as claimed in claim 1, characterized in that: the electric control system is provided with a button, and the button is connected with the temperature controller in parallel and is used for manually controlling the spraying system.
3. The auxiliary cooling system of the main transformer of the photovoltaic power station as claimed in claim 2, characterized in that: electric control system electric connection has the warning light, the warning light includes that automatic operation warning light (2), manual operation warning light (3) and booster pump stop warning light (4), and automatic operation warning light (2) and manual operation warning light (3) are parallelly connected the back series connection booster pump and stop warning light (4), automatic operation warning light (2) and manual operation warning light (3) respectively establish ties there are auxiliary relay, automatic operation warning light (2) through auxiliary relay with the temperature controller is connected, manual operation warning light (3) through auxiliary relay with the button is connected, the booster pump stop warning light (4) with the booster pump is parallelly connected.
4. The auxiliary cooling system of the main transformer of the photovoltaic power station as claimed in claim 1, characterized in that: the spraying system comprises a main pipeline (8), branch pipelines (9) and spray headers (10), the main pipeline (8) is connected with a plurality of branch pipelines (9), a plurality of spray headers (10) are installed on the branch pipelines (9), the spray headers (10) are located around a main transformer (11), and water purification equipment (7), a booster pump (1) and a solenoid valve (5) are sequentially installed in the main pipeline along the water flowing direction.
5. The auxiliary cooling system of the main transformer of the photovoltaic power station as claimed in claim 4, characterized in that: the main pipeline (8) and the branch pipelines (9) are both made of PPR, the specification of the main pipeline (8) is DN50, and the specification of the branch pipelines (9) is DN 40.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921897666.6U CN210443393U (en) | 2019-11-06 | 2019-11-06 | Auxiliary cooling system for main transformer of photovoltaic power station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921897666.6U CN210443393U (en) | 2019-11-06 | 2019-11-06 | Auxiliary cooling system for main transformer of photovoltaic power station |
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|---|---|
| CN210443393U true CN210443393U (en) | 2020-05-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921897666.6U Active CN210443393U (en) | 2019-11-06 | 2019-11-06 | Auxiliary cooling system for main transformer of photovoltaic power station |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112181022A (en) * | 2020-10-19 | 2021-01-05 | 广东电网有限责任公司佛山供电局 | Automatic water-cooling system of main transformer |
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2019
- 2019-11-06 CN CN201921897666.6U patent/CN210443393U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112181022A (en) * | 2020-10-19 | 2021-01-05 | 广东电网有限责任公司佛山供电局 | Automatic water-cooling system of main transformer |
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