CN214674498U - Photovoltaic energy storage inversion and boosting integrated machine and fire alarm protection system thereof - Google Patents

Photovoltaic energy storage inversion and boosting integrated machine and fire alarm protection system thereof Download PDF

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Publication number
CN214674498U
CN214674498U CN202022945137.8U CN202022945137U CN214674498U CN 214674498 U CN214674498 U CN 214674498U CN 202022945137 U CN202022945137 U CN 202022945137U CN 214674498 U CN214674498 U CN 214674498U
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China
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signal
energy storage
photovoltaic energy
fire alarm
protection system
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CN202022945137.8U
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刘阳
周诚
周玉森
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Shenzhen Kstar New Energy Co Ltd
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Guangdong Youdian New Energy Technology Co ltd
Shenzhen Kstar New Energy Co Ltd
Shenzhen Kstar Technology Co Ltd
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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
    • Y02E10/56—Power conversion systems, e.g. maximum power point trackers

Abstract

The utility model provides a photovoltaic energy storage inversion boosting all-in-one machine and a fire alarm protection system thereof, wherein the fire alarm protection system comprises a temperature-sensitive detector, a signal processing module, a signal extension unit and a signal extension delay unit, the temperature-sensitive detector is arranged on the side surface and/or the top of an inverter cabinet body, and the temperature-sensitive detector is electrically connected with the signal processing module; the signal processing module is electrically connected with the signal expansion unit and outputs a fire alarm signal; the signal expansion unit is electrically connected with the measurement and control device, the measurement and control device is communicated with a power station background, and the power station background sends an instruction to be communicated with the direct-current side combiner box through the measurement and control device to disconnect a main switch of the combiner box; the signal processing module is electrically connected with the signal extension delay unit, and the signal extension delay unit is electrically connected with a frame circuit breaker and a high-voltage circuit breaker of the inverter respectively. Adopt the technical scheme of the utility model, make the system operation more stable safer, reduced the conflagration to the harm in upper and lower reaches.

Description

Photovoltaic energy storage inversion and boosting integrated machine and fire alarm protection system thereof
Technical Field
The utility model relates to a, especially, relate to a photovoltaic energy storage contravariant all-in-one that steps up and protection system is reported an emergency and asked for help or increased vigilance in conflagration thereof.
Background
Photovoltaic energy storage inverter boost all-in-one generally includes three compartments: the fire alarm system comprises a photovoltaic energy storage inverter chamber, a transformer chamber and a high-pressure chamber, wherein a photovoltaic energy storage inverter is easy to cause fire, so that the installation of the fire alarm device in the photovoltaic energy storage inverter chamber is very important. The conventional scheme is that a photoelectric smoke detector is installed at the top of a photovoltaic energy storage inverter chamber, when a fire disaster occurs, the smoke detector sends an alarm signal to a measurement and control device, and the measurement and control device uploads the fire disaster signal to a power station background, so that the alarm is finished.
In the prior art, a photoelectric smoke detector is generally arranged at the top of a photovoltaic energy storage inverter chamber, when a fire disaster is caused by internal faults of the photovoltaic energy storage inverter, the detector detects photoelectric smoke, a radioactive source americium 241 is arranged in an inner ionization chamber and an outer ionization chamber of the smoke detector, and positive ions and negative ions generated by ionization respectively move towards positive electrodes and negative electrodes under the action of an electric field. Under normal conditions, the current and voltage of the inner ionization chamber and the outer ionization chamber are stable. Once smoke escapes from the outer ionization chamber, the normal movement of charged particles is disturbed, the current and the voltage are changed, the balance between the inner ionization chamber and the outer ionization chamber is destroyed, an alarm signal is sent out, and the measurement and control device receives a fire signal and transmits the fire signal to the background host, so that the fire alarm is completed.
However, the field environment of photovoltaic and optical storage power stations is generally windy and sandy, and the inverter room is in a strong air cooling mode, so that the situation of false alarm of the smoke detector can be caused, long-term operation is not facilitated, and the generation benefit is reduced. If the sensitivity is adjusted, the generated smoke can be discharged out of the cabinet body through the air duct due to the independent air duct, and the fault cannot be correctly reported. And if a large amount of smoke is produced, it is generally already in the stage of fire formation, and once the fire is over, the inverter is irreparably damaged. In addition, the inverter and the high-voltage switch cabinet can be remotely controlled to be switched off when the background receives the fire signal, the signal is transmitted to the background and the remote control signal is sent back to the background for requiring time, and the inverter can not complete remote control action due to fire.
SUMMERY OF THE UTILITY MODEL
To the technical problem, the utility model discloses a photovoltaic energy storage contravariant all-in-one that steps up and protection system is reported an emergency and asked for help or increased vigilance in conflagration thereof makes the system operation more stable safer, solves the transmission problem of the fire signal of photovoltaic contravariant all-in-one, has reduced the conflagration to the harm in upper and lower reaches.
To this end, the technical scheme of the utility model is that:
a fire alarm protection system of a photovoltaic energy storage inversion and boosting integrated machine comprises a temperature-sensitive detector, a signal processing module, a signal expansion unit and a signal expansion delay unit, wherein the temperature-sensitive detector is arranged on the side surface and/or the top of an inverter cabinet body and is electrically connected with the signal processing module;
the signal processing module is electrically connected with the signal expansion unit and outputs a fire alarm signal; the signal expansion unit is electrically connected with the measurement and control device and used for expanding an alarm signal, the measurement and control device is communicated with a power station background, the power station background sends an instruction to be communicated with the direct-current side combiner box through the measurement and control device, a main switch of the combiner box is disconnected, and a direct-current source is cut off;
the signal processing module is electrically connected with the signal extension delay unit, and the signal extension delay unit is respectively electrically connected with a frame circuit breaker and a high-voltage circuit breaker of the inverter to delay tripping signals.
As a further improvement, the temperature detector is a cable type linear temperature detector. The temperature sensor of the cable type linear temperature-sensing detector is in a cable type, is in direct contact with a protected body, sends out an alarm signal when the temperature exceeds an alarm limit value, can send out a fire alarm before an open fire happens, and can select different early warning temperatures according to different environments to have wider application range. In addition, the cable type linear temperature sensing device is a recoverable type, and can be repeatedly used to reduce the product cost.
As a further improvement of the present invention, the temperature-sensitive detector is wound on the surface of the inverter cabinet. By adopting the technical scheme, the sensitivity of temperature induction is higher.
As a further improvement, the signal processing module includes a signal processor, the signal processor includes a signal acquisition circuit, a signal amplification conversion circuit and an ambient temperature compensation circuit, the signal acquisition circuit passes through the signal amplification conversion circuit and is connected with the ambient temperature compensation circuit, the temperature-sensitive detector is connected with the signal processor.
As a further improvement of the present invention, the signal processing module includes a terminal processor including a temperature compensation circuit, the signal processor is connected to the terminal processor, and the terminal processor is connected to the signal expansion unit. The environment temperature compensation circuit and the terminal processor containing the temperature compensation circuit complete temperature compensation at the same time.
As a further improvement, the power end of the measurement and control device is connected with the low-voltage end in the photovoltaic energy storage inversion boosting all-in-one machine.
As a further improvement of the present invention, the signal extension unit includes a signal extension processing chip XJ1, and the signal extension delay unit includes a signal extension processing chip XJ 2. The signal expansion processing chip XJ2 is electrically connected with a frame breaker and a high-voltage breaker of the inverter respectively.
The utility model discloses a photovoltaic energy storage contravariant all-in-one that steps up, it includes as above arbitrary photovoltaic energy storage contravariant all-in-one conflagration that steps up report an emergency and ask for help or increased vigilance protection system.
Compared with the prior art, the beneficial effects of the utility model are that:
by adopting the technical scheme of the utility model, the temperature-sensitive detector is used for replacing the photoelectric smoke sensor and is arranged on the surface of the protected element, so that the temperature sensing is more sensitive, the fire signal can be pre-warned better, and the fire loss is reduced; and further, the cable type linear temperature sensing device is recoverable, and can be repeatedly used to reduce the product cost. The signal extension delay unit is used for ensuring that a fire alarm signal is uploaded to a power station background before the integrated machine is cut off from alternating current and direct current, a fire alarm can be timely carried out, the signal extension unit is used for extending a tripping contact and a measurement and control device to be communicated with a combiner box and tripping a combiner box output switch to cut off an alternating current and direct current measurement power supply of the integrated machine, protection is carried out, and the influence range of fire is favorably reduced; the system is more stable and safer to operate.
Drawings
Fig. 1 is the embodiment of the utility model provides a structural schematic of photovoltaic energy storage contravariant all-in-one that steps up.
Fig. 2 is a circuit diagram of a fire alarm protection system of photovoltaic energy storage inversion all-in-one that steps up, wherein a) is the circuit diagram of fire signal extension, b) is the circuit diagram of fire signal delay extension, c) is the circuit diagram that fire signal reaches measurement and control device, d) is the signal delay extension and high voltage circuit breaker's the schematic diagram of being connected, e) is the signal extension delay unit and the schematic diagram of being connected of first dc-to-ac converter, f) is the signal extension delay unit and the schematic diagram of being connected of second dc-to-ac converter.
Fig. 3 is the embodiment of the utility model provides a signal transmission picture of protection system is reported an emergency and asked for help or increased vigilance to conflagration of photovoltaic energy storage contravariant all-in-one that steps up.
The reference numerals include:
1-a first inverter, 2-a second inverter, 3-a temperature-sensitive detector, 4-a signal processor and 5-a terminal processor;
10-outdoor integrated machine box body.
Detailed Description
Preferred embodiments of the present invention will be described in further detail with reference to the accompanying drawings.
Example 1
As shown in fig. 1, a fire alarm protection system for a photovoltaic energy storage, inversion and boosting integrated machine comprises a temperature-sensitive detector 33, a signal processing module, a signal expansion unit and a signal expansion delay unit, wherein the temperature-sensitive detector 3 is arranged on the side surface and/or the top of a cabinet body of the inverter, and the temperature-sensitive detector 3 is electrically connected with the signal processing module; the signal processing module comprises a signal processor 4 and a terminal processor 5 comprising a temperature compensation circuit. The signal processor 4, the terminal processor 5 and the inverter are all located in the same outdoor all-in-one machine box 10. The temperature-sensing detector 3 is a cable type linear temperature-sensing detector 3. Further, the temperature-sensitive detector 3 is wound on the surface of the inverter cabinet.
The signal processor 4 comprises a signal acquisition circuit, a signal amplification conversion circuit and an environment temperature compensation circuit, the signal acquisition circuit is connected with the environment temperature compensation circuit through the signal amplification conversion circuit, and the temperature-sensitive detector 3 is connected with the signal processor 4. The signal processor 4 is connected with the terminal processor 5, and the terminal processor 5 is connected with the signal expansion unit and outputs a fire alarm signal; the signal extension unit is electrically connected with the measurement and control device, extends an alarm signal, the measurement and control device communicates with the power station background, the power station background sends an instruction to communicate with the direct current side header box through the measurement and control device, a header box main switch is disconnected, and a direct current source is cut off.
The signal processing module is electrically connected with the signal extension delay unit, and the signal extension delay unit is respectively electrically connected with a frame circuit breaker and a high-voltage circuit breaker of the inverter to delay tripping signals. And the power supply end of the measurement and control device is connected with the low-voltage end in the photovoltaic energy storage inversion boosting integrated machine.
As shown in fig. 1, in this embodiment, two inverters, namely a first inverter 1 and a second inverter 2, are disposed in an outdoor all-in-one machine box 10, cable type linear temperature-sensing detectors 3 are respectively disposed on the side surfaces and the top portions of cabinets of the first inverter 1 and the second inverter 2, and the first inverter 1 and the second inverter 2 are connected to a signal processor 4, and the signal processor 4 and a terminal processor 5 are connected thereto. The signal processor 4 is internally provided with a signal processing circuit which comprises a signal acquisition circuit, a signal amplification and conversion circuit, an environment temperature compensation circuit and the like, continuously monitors the ambient temperature of the sensitive part, and carries out fire alarm on the temperature rise caused by abnormal conditions; and carrying out fault alarm on short circuit and open circuit of the sensitive part conductor. The temperature setting alarm action can be set according to 85 ℃ and 105 ℃. When the temperature is increased due to the outlet fault inside the protected device, a fire alarm signal is output when the temperature is higher than the alarm temperature.
Further, as shown in fig. 2, the signal extension unit includes a signal extension processing chip XJ1, and the signal extension delay unit includes a signal extension processing chip XJ 2. The signal expansion processing chip XJ2 is electrically connected to the frame breaker 2QF of the first inverter 1, the frame breaker 3QF of the second inverter 2, and the high-voltage breaker 1QF, respectively. The fire alarm signal is transmitted to the measurement and control device through the expansion of the signal expansion unit XJ1, the measurement and control device communicates with the power station background through optical fibers, the background sends an instruction to communicate with the direct-current side header box through the measurement and control device RS485 to disconnect the main switch of the header box and cut off a direct-current source; the tripping signal is delayed by the signal extension delay unit to cut off the inverter and the high-voltage side circuit breaker; because the power supply of the measurement and control device is taken from the low-voltage end in the all-in-one machine, and the measurement and control power supply disappears after the inverter and the high-voltage short-circuiting device are disconnected, the delay time needs to be longer than the communication time between the fire signal and the power station background, and the background is ensured to receive the fire signal. The signal expansion processing chip XJ1 is only required to be a common intermediate relay; the signal expansion processing chip XJ2 is a delay closing relay with adjustable delay. The specific signal transfer diagram is shown in fig. 3.
Example 2
As shown in fig. 1, a photovoltaic energy storage inversion and boosting all-in-one machine includes the photovoltaic energy storage inversion and boosting all-in-one machine fire alarm protection system according to embodiment 1. The photovoltaic energy storage inversion and boosting integrated machine comprises an outdoor integrated machine box body 10, and the signal processor 4, the terminal processor 5 and the inverter are all located in the same outdoor integrated machine box body 10.
The above-mentioned embodiments are the preferred embodiments of the present invention, and the scope of the present invention is not limited to the above-mentioned embodiments, and the scope of the present invention includes and is not limited to the above-mentioned embodiments, and all equivalent changes made according to the shape and structure of the present invention are within the protection scope of the present invention.

Claims (7)

1. The utility model provides a photovoltaic energy storage contravariant all-in-one conflagration warning protection system that steps up which characterized in that: the temperature-sensing detector is arranged on the side surface and/or the top of the inverter cabinet body, and is electrically connected with the signal processing module;
the signal processing module is electrically connected with the signal expansion unit and outputs a fire alarm signal; the signal expansion unit is electrically connected with the measurement and control device and used for expanding an alarm signal, the measurement and control device is communicated with a power station background, the power station background sends an instruction to be communicated with the direct-current side combiner box through the measurement and control device, a main switch of the combiner box is disconnected, and a direct-current source is cut off;
the signal processing module is electrically connected with the signal extension delay unit, and the signal extension delay unit is respectively electrically connected with a frame circuit breaker and a high-voltage circuit breaker of the inverter to delay tripping signals.
2. The fire alarm protection system of the photovoltaic energy storage inversion and boosting integrated machine according to claim 1, characterized in that: the temperature-sensing detector is a cable type linear temperature-sensing detector.
3. The fire alarm protection system of the photovoltaic energy storage, inversion and boosting integrated machine as claimed in claim 2, wherein: the temperature-sensitive detector is wound on the surface of the inverter cabinet body.
4. The fire alarm protection system of the photovoltaic energy storage, inversion and boosting integrated machine as claimed in claim 2, wherein: the signal processing module comprises a signal processor, the signal processor comprises a signal acquisition circuit, a signal amplification conversion circuit and an environment temperature compensation circuit, the signal acquisition circuit is connected with the environment temperature compensation circuit through the signal amplification conversion circuit, and the temperature-sensitive detector is connected with the signal processor.
5. The fire alarm protection system of the photovoltaic energy storage, inversion and boosting integrated machine as claimed in claim 4, wherein: the signal processing module comprises a terminal processor comprising a temperature compensation circuit, the signal processor is connected with the terminal processor, and the terminal processor is connected with the signal expansion unit.
6. The fire alarm protection system of the photovoltaic energy storage, inversion and boosting integrated machine as claimed in claim 2, wherein: and the power supply end of the measurement and control device is connected with the low-voltage end in the photovoltaic energy storage inversion boosting integrated machine.
7. The utility model provides a photovoltaic energy storage contravariant all-in-one that steps up which characterized in that: the integrated photovoltaic energy storage, inversion and boosting machine fire alarm protection system comprises the integrated photovoltaic energy storage, inversion and boosting machine fire alarm protection system according to any one of claims 1-6.
CN202022945137.8U 2020-12-10 2020-12-10 Photovoltaic energy storage inversion and boosting integrated machine and fire alarm protection system thereof Active CN214674498U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202022945137.8U CN214674498U (en) 2020-12-10 2020-12-10 Photovoltaic energy storage inversion and boosting integrated machine and fire alarm protection system thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202022945137.8U CN214674498U (en) 2020-12-10 2020-12-10 Photovoltaic energy storage inversion and boosting integrated machine and fire alarm protection system thereof

Publications (1)

Publication Number Publication Date
CN214674498U true CN214674498U (en) 2021-11-09

Family

ID=78498730

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202022945137.8U Active CN214674498U (en) 2020-12-10 2020-12-10 Photovoltaic energy storage inversion and boosting integrated machine and fire alarm protection system thereof

Country Status (1)

Country Link
CN (1) CN214674498U (en)

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GR01 Patent grant
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TR01 Transfer of patent right

Effective date of registration: 20221111

Address after: Floor 9, Keshida Industrial Park R&D Building, No.7 Road, Gaoxinyuan West District, Guangming New District, Shenzhen, Guangdong 518000

Patentee after: SHENZHEN KSTAR NEW ENERGY Co.,Ltd.

Address before: 518000 rooms 401 and 402, 4th floor, building 1, software park, kejizhong 2nd Road, Gaoxin North District, Nanshan District, Shenzhen City, Guangdong Province

Patentee before: SHENZHEN KSTAR SCIENCE AND TECHNOLOGY Co.,Ltd.

Patentee before: Guangdong Youdian New Energy Technology Co.,Ltd.

Patentee before: SHENZHEN KSTAR NEW ENERGY Co.,Ltd.

TR01 Transfer of patent right