Machine room photoelectric complementary power supply system

Abstract

The utility model relates to a machine room photoelectric complementary power supply system and belongs to the technical field of photoelectric complementary power supply. Comprising a mains supply access module, a solar photovoltaic array, an alternating current load, a direct current load and a control module, the output end of the mains supply access module is connected with a first AC-AC converter and a rectifier, the output end of the rectifier is further connected with a first DC-DC converter, and the output end of the solar photovoltaic array is connected with a photovoltaic controller. The output end of the photovoltaic controller is connected with a charging and discharging controller, a first inverter and a second DC-DC converter, the first inverter is connected with a second AC-AC converter, the charging and discharging controller is connected with a storage battery, and the charging and discharging controller is further connected with a mains supply access module; according to the utility model, photovoltaic power generation and photoelectric complementation are utilized, dependence on commercial power is reduced, energy consumption and operation cost are reduced, and good energy-saving and environment-friendly benefits are achieved.

Description

Technical Field

[0001] This utility model belongs to the field of optoelectronic complementary power supply technology, specifically relating to an optoelectronic complementary power supply system for computer rooms. Background Technology

[0002] As the core location for data processing and storage, communication equipment rooms have extremely high requirements for power supply stability and continuity. Traditional equipment rooms mostly rely on mains power, which is not only energy-intensive but also makes it difficult to ensure normal equipment operation during mains power failures. Although some equipment rooms have introduced backup power supplies, these suffer from slow response, high costs, and environmental pollution. With the development of photovoltaic power generation technology, its application to equipment room power supply has become a trend. However, when existing photovoltaic power supply systems are integrated with equipment room power supply systems, problems such as low energy conversion efficiency, inflexible power supply mode switching, and inability to simultaneously and efficiently meet the power demands of AC and DC loads exist, which urgently need improvement. Therefore, this utility model provides a photovoltaic complementary power supply system for equipment rooms to solve the above problems. Summary of the Invention

[0003] To overcome the problems mentioned in the background art, this utility model provides a photovoltaic-electric complementary power supply system for computer rooms. This utility model utilizes photovoltaic power generation and photovoltaic complementarity, reducing dependence on mains power, lowering energy consumption and operating costs, and exhibiting good energy-saving and environmental protection benefits.

[0004] To achieve the above objectives, this utility model is implemented through the following technical solution: A computer room photovoltaic complementary power supply system includes a mains power access module 1, a solar photovoltaic array 5, an AC load 16, a DC load 17, and a control module 11. The output terminal of the mains power access module 1 is connected to a first AC-AC converter 2 and a rectifier 3. The output terminal of the rectifier 3 is also connected to a first DC-DC converter 4. The output terminal of the solar photovoltaic array 5 is connected to a photovoltaic controller 6. The output terminal of the photovoltaic controller 6 is connected to a charge / discharge controller 7, a first inverter 8, and a second DC-DC converter 9. The first inverter 8 is connected to a second AC-AC converter 10 for charging and discharging. The controller 7 is connected to the battery 12, and the charge / discharge controller 7 is also connected to the mains power access module 1. The battery 12 is connected to the third DC-DC converter 13 and the second inverter 14. The second inverter 14 is connected to the third AC-AC converter 15. The first AC-AC converter 2, the second AC-AC converter 10 and the third AC-AC converter 15 are all connected to the AC load 16. The first DC-DC converter 4, the second DC-DC converter 9 and the third DC-DC converter 13 are all connected to the DC load 17. The control module 11 is connected to the mains power access module 1, the photovoltaic controller 6, the charge / discharge controller 7 and the battery 12.

[0005] Furthermore, the AC load 16 includes a primary AC load branch 1601, a secondary AC load branch 1602, and a tertiary AC load branch 1603, and the DC load 17 is divided into a primary DC load branch 1701, a secondary DC load branch 1702, and a tertiary DC load branch 1703.

[0006] Furthermore, a first control switch 18 is connected between the mains power access module 1 and the first AC-AC converter 2; a second control switch 19 is connected between the mains power access module 1 and the rectifier 3; a third control switch 20 is connected between the photovoltaic controller 6 and the charge / discharge controller 7; a fourth control switch 21 is connected between the photovoltaic controller 6 and the first inverter 8; a fifth control switch 22 is connected between the photovoltaic controller 6 and the second DC-DC converter 9; a sixth control switch 23 is connected between the battery 12 and the third DC-DC converter 13; and a seventh control switch 24 is connected between the battery 12 and the second inverter 14.

[0007] Furthermore, the first-level AC load branch 1601, the second-level AC load branch 1602, and the third-level AC load branch 1603 are respectively connected to an eighth control switch 25, a ninth control switch 26, and a tenth control switch 27, and the first-level DC load branch 1701, the second-level DC load branch 1702, and the third-level DC load branch 1703 are respectively connected to an eleventh control switch 28, a twelfth control switch 29, and a thirteenth control switch 30.

[0008] Furthermore, voltage sensors and current sensors are respectively connected to the primary AC load branch 1601, the secondary AC load branch 1602, the tertiary AC load branch 1603, the primary DC load branch 1701, the secondary DC load branch 1702, and the tertiary DC load branch 1703.

[0009] Furthermore, the control module 11 is also wirelessly connected to the meteorological service platform 31.

[0010] Furthermore, the control module 11 is also wirelessly connected to a light intensity sensor 32.

[0011] The beneficial effects of this utility model are:

[0012] This utility model's photovoltaic-coupled power supply system for computer rooms combines mains power and photovoltaic power generation. Through the rational configuration of rectifiers, inverters, and other components, it achieves flexible conversion between AC and DC power, providing stable power to both AC and DC loads within the computer room. By prioritizing loads based on their importance, it effectively ensures the power supply to critical equipment in the computer room, improving the reliability and stability of the power supply. Utilizing photovoltaic power generation reduces dependence on mains power, lowers energy consumption and operating costs, and offers significant energy-saving and environmental benefits. Attached Figure Description

[0013] Fig. 1 This is a schematic diagram of the photoelectric complementary power supply of this utility model.

[0014] Fig. 2 This is a schematic diagram of the control system of this utility model.

[0015] Fig. 3 This is a schematic diagram of the load branch of this utility model.

[0016] Figure reference numerals: 1. Mains power input module; 2. First AC-AC converter; 3. Rectifier; 4. First DC-DC converter; 5. Solar photovoltaic array; 6. Photovoltaic controller; 7. Charge / discharge controller; 8. First inverter; 9. Second DC-DC converter; 10. Second AC-AC converter; 11. Control module; 12. Battery; 13. Third DC-DC converter; 14. Second inverter; 15. Third AC-AC converter; 16. AC load; 16. Primary AC load branch 1601; 16. Secondary AC load branch 1602; 17. Tertiary AC load branch 18. 603, DC load 17, primary DC load branch 1701, secondary DC load branch 1702, tertiary DC load branch 1703, first control switch 18, second control switch 19, third control switch 20, fourth control switch 21, fifth control switch 22, sixth control switch 23, seventh control switch 24, eighth control switch 25, ninth control switch 26, tenth control switch 27, eleventh control switch 28, twelfth control switch 29, thirteenth control switch 30, meteorological service platform 31, light intensity sensor 32. Detailed Implementation

[0017] To make the objectives, technical solutions, and beneficial effects of this utility model clearer, the preferred embodiments of this utility model will be described in detail below with reference to the accompanying drawings, so as to facilitate the understanding of those skilled in the art.

[0018] like Figs. 1-3This utility model discloses a photovoltaic complementary power supply system for a computer room. The system includes a mains power access module 1, a solar photovoltaic array 5, an AC load 16, a DC load 17, and a control module 11. The input of the mains power access module 1 is connected to the mains power supply. The output of the mains power access module 1 is connected to a first AC-AC converter 2 and a rectifier 3. The output of the rectifier 3 is also connected to a first DC-DC converter 4. The output of the solar photovoltaic array 5 is connected to a photovoltaic controller 6. The output of the photovoltaic controller 6 is connected to a charge / discharge controller 7, a first inverter 8, and a second DC-DC converter 9. The first inverter 8 is connected to the second AC-AC converter 9. The converter 10 and the charge / discharge controller 7 are connected to the battery 12 and the mains power access module 1. The battery 12 is connected to the third DC-DC converter 13 and the second inverter 14. The second inverter 14 is connected to the third AC-AC converter 15. The first AC-AC converter 2, the second AC-AC converter 10, and the third AC-AC converter 15 are all connected to the AC load 16. The first DC-DC converter 4, the second DC-DC converter 9, and the third DC-DC converter 13 are all connected to the DC load 17. The control module 11 is connected to the mains power access module 1, the photovoltaic controller 6, the charge / discharge controller 7, and the battery 12. The AC load 16 includes a primary AC load branch 1601, a secondary AC load branch 1602, and a tertiary AC load branch 1603. The DC load 17 is divided into a primary DC load branch 1701, a secondary DC load branch 1702, and a tertiary DC load branch 1703. A first control switch 18 is connected between the mains power access module 1 and the first AC-AC converter 2; a second control switch 19 is connected between the mains power access module 1 and the rectifier 3; a third control switch 20 is connected between the photovoltaic controller 6 and the charge / discharge controller 7; a fourth control switch 21 is connected between the photovoltaic controller 6 and the first inverter 8; a fifth control switch 22 is connected between the photovoltaic controller 6 and the second DC-DC converter 9; a sixth control switch 23 is connected between the battery 12 and the third DC-DC converter 13; and a seventh control switch 24 is connected between the battery 12 and the second inverter 14.The first-level AC load branch 1601, the second-level AC load branch 1602, and the third-level AC load branch 1603 are respectively connected to an eighth control switch 25, a ninth control switch 26, and a tenth control switch 27. The first-level DC load branch 1701, the second-level DC load branch 1702, and the third-level DC load branch 1703 are respectively connected to an eleventh control switch 28, a twelfth control switch 29, and a thirteenth control switch 30. The first control switch 18, the second control switch 19, the third control switch 20, the fourth control switch 21, the fifth control switch 22, the sixth control switch 23, the seventh control switch 24, the eighth control switch 25, the ninth control switch 26, the tenth control switch 27, the eleventh control switch 28, the twelfth control switch 29, and the thirteenth control switch 30 are all connected to the control module 11. The photovoltaic controller is an MPPT controller. The first-level DC load branches are the core business loads of the data center. Power outages will lead to business interruption, data loss, or significant security risks. Examples include switches (such as core layer switches and backbone network switches); routers (core routers and aggregation routers); and servers (data center core servers and billing servers). Second-level DC load branches are loads that affect local business operations or maintenance management, requiring continuous power supply but allowing for short-term interruptions. Examples include access layer equipment: access switches and user-end routers; monitoring and management equipment: power and environmental monitoring systems; network management servers (non-core layer); and auxiliary communication equipment: IP phone systems and video conferencing terminals (non-core nodes). Third-level DC load branches are non-core auxiliary equipment, such as office and auxiliary equipment: printers, scanners, and ordinary PC terminals; and non-core monitoring equipment: ordinary cameras (non-critical areas) and access control systems (non-core entrances and exits). The first-level AC load branches are critical infrastructure: such as AC uninterruptible power supply (UPS) systems; and cooling systems: precision air conditioners (CRAC) and chillers (to ensure equipment heat dissipation). These directly affect the equipment operating environment and power supply stability. Secondary AC load branches are for auxiliary power equipment: general air conditioners (non-precision type), ventilators; general lighting systems (non-emergency areas), corridor lighting. Tertiary AC load branches are for non-continuously operating or non-critical equipment, such as water dispensers, microwave ovens, general computers, printers, and non-core area lighting. They can tolerate prolonged interruptions without affecting business operations.

[0019] During the day, when there is sufficient sunlight, the solar photovoltaic array generates electricity normally. The fourth and fifth control switches are closed to prioritize powering DC and AC loads from the solar photovoltaic array. Excess electricity generated by the array is stored in the battery, and the third control switch is closed to charge the battery. During periods of abnormal sunlight (such as cloudy or rainy days) or at night, when the solar photovoltaic array fails to generate electricity normally, the first and second control switches are closed to use mains power to supply DC and AC loads. During consecutive cloudy or rainy days, if the battery is not fully charged and reaches its lower discharge limit, mains power is used to charge the battery, ensuring power supply to the server room during power outages. When the solar photovoltaic array fails to generate power normally and is powered off, close the sixth and seventh control switches to use the battery to supply power to the DC and AC loads. Based on the remaining battery power and the time of power restoration, select the load to be supplied via the eighth, ninth, tenth, eleventh, twelfth, or thirteenth control switches. Prioritize disconnecting the power supply to the third-level DC load branch and the third-level AC load branch, and then disconnect the power supply to the second-level AC load branch. The power supply to the second-level DC load branch is selected based on the remaining battery power and the time of power restoration, and can be interrupted for a short time. Prioritize supplying power to the first-level DC load branch and the first-level AC load branch.

[0020] This utility model's photovoltaic-coupled power supply system for computer rooms combines mains power and photovoltaic power generation. Through the rational configuration of rectifiers, inverters, and other components, it achieves flexible conversion between AC and DC power, providing stable power to both AC and DC loads within the computer room. By prioritizing loads based on their importance, it effectively ensures the power supply to critical equipment in the computer room, improving the reliability and stability of the power supply. Utilizing photovoltaic power generation reduces dependence on mains power, lowers energy consumption and operating costs, and offers significant energy-saving and environmental benefits.

[0021] The primary AC load branch 1601, secondary AC load branch 1602, and tertiary AC load branch 1603, as well as the primary DC load branch 1701, secondary DC load branch 1702, and tertiary DC load branch 1703, are respectively connected to voltage sensors and current sensors. Both voltage sensors and current sensors are connected to the control module 11. The voltage sensors and current sensors can monitor the voltage and current data of each load branch, as well as the power consumption.

[0022] The control module 11 is also wirelessly connected to the meteorological service platform 31; the control module connects to the meteorological service platform to obtain meteorological data, such as the weather conditions in the near future, so as to facilitate the prediction of the power generation of the solar photovoltaic array.

[0023] The control module 11 is also wirelessly connected to a light intensity sensor 32. The light intensity sensor is installed in the area where the solar photovoltaic array is located to monitor the light intensity. Based on the light intensity and the voltage and current output by the solar photovoltaic array, it determines whether the solar photovoltaic array is generating electricity normally and whether there is any abnormality.

[0024] Work process:

[0025] The working principle of this utility model is as follows: During the day, when there is sufficient sunlight, the solar photovoltaic array 5 generates electricity normally. The fourth control switch 21 and the fifth control switch 22 are closed, prioritizing the use of the solar photovoltaic array 5 to supply power to the DC load 17 and the AC load 16. Excess electricity generated by the solar photovoltaic array 1 is stored in the battery 12, and the third control switch 20 is closed to charge the battery 12. When sunlight is abnormal during the day (such as on cloudy or rainy days) or at night, and the solar photovoltaic array 1 fails to generate electricity normally, the first control switch 18 and the second control switch 19 are closed to use mains power to supply power to the DC load 17 and the AC load 16. When the solar photovoltaic array 1 fails to generate power normally and is powered off, close the sixth control switch 23 and the seventh control switch 24 to use the battery 12 to supply power to the DC load 17 and the AC load 16. Based on the remaining power of the battery 12 and the time of power restoration, select the load to be supplied via the eighth control switch 25, the ninth control switch 26, the tenth control switch 27, the eleventh control switch 28, the twelfth control switch 29 or the thirteenth control switch 30. Prioritize disconnecting the power supply to the third-level DC load branch 1703 and the third-level AC load branch 1603, and then disconnect the power supply to the second-level AC load branch 1602. The power supply to the second-level DC load branch 1702 is selected based on the remaining power of the battery and the time of power restoration, and can be interrupted for a short time. Prioritize supplying power to the first-level DC load branch 1701 and the first-level AC load branch 1601.

[0026] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of this utility model.

Claims

1. A computer room optoelectronic complementary power supply system, characterized in that: The aforementioned computer room photovoltaic complementary power supply system includes a mains power access module (1), a solar photovoltaic array (5), an AC load (16), a DC load (17), and a control module (11). The output terminal of the mains power access module (1) is connected to a first AC-AC converter (2) and a rectifier (3). The output terminal of the rectifier (3) is also connected to a first DC-DC converter (4). The output terminal of the solar photovoltaic array (5) is connected to a photovoltaic controller (6). The output terminal of the photovoltaic controller (6) is connected to a charge / discharge controller (7), a first inverter (8), and a second DC-DC converter (9). The first inverter (8) is connected to a second AC-AC converter (10). The charge / discharge controller (7) is connected to a battery (12). The charge / discharge controller (7) is also connected to the mains access module (1). The battery (12) is connected to the third DC-DC converter (13) and the second inverter (14). The second inverter (14) is connected to the third AC-AC converter (15). The first AC-AC converter (2), the second AC-AC converter (10) and the third AC-AC converter (15) are all connected to the AC load (16). The first DC-DC converter (4), the second DC-DC converter (9) and the third DC-DC converter (13) are all connected to the DC load (17). The control module (11) is connected to the mains access module (1), the photovoltaic controller (6), the charge / discharge controller (7) and the battery (12).

2. The optoelectronic complementary power supply system for a computer room according to claim 1, characterized in that: The AC load (16) includes a primary AC load branch (1601), a secondary AC load branch (1602) and a tertiary AC load branch (1603), and the DC load (17) is divided into a primary DC load branch (1701), a secondary DC load branch (1702) and a tertiary DC load branch (1703).

3. The optoelectronic complementary power supply system for a computer room according to claim 2, characterized in that: A first control switch (18) is connected between the mains power access module (1) and the first AC-AC converter (2). A second control switch (19) is connected between the mains power access module (1) and the rectifier (3). A third control switch (20) is connected between the photovoltaic controller (6) and the charge / discharge controller (7). A fourth control switch (21) is connected between the photovoltaic controller (6) and the first inverter (8). A fifth control switch (22) is connected between the photovoltaic controller (6) and the second DC-DC converter (9). A sixth control switch (23) is connected between the battery (12) and the third DC-DC converter (13). A seventh control switch (24) is connected between the battery (12) and the second inverter (14).

4. The optoelectronic complementary power supply system for a computer room according to claim 3, characterized in that: The first-level AC load branch (1601), the second-level AC load branch (1602), and the third-level AC load branch (1603) are respectively connected to an eighth control switch (25), a ninth control switch (26), and a tenth control switch (27). The first-level DC load branch (1701), the second-level DC load branch (1702), and the third-level DC load branch (1703) are respectively connected to an eleventh control switch (28), a twelfth control switch (29), and a thirteenth control switch (30).

5. The optoelectronic complementary power supply system for a computer room according to claim 3, characterized in that: The first-level AC load branch (1601), the second-level AC load branch (1602), and the third-level AC load branch (1603), as well as the first-level DC load branch (1701), the second-level DC load branch (1702), and the third-level DC load branch (1703), are respectively connected to voltage sensors and current sensors.

6. The optoelectronic complementary power supply system for a computer room according to claim 1, characterized in that: The control module (11) is also wirelessly connected to the meteorological service platform (31).

7. The optoelectronic complementary power supply system for a computer room according to claim 1, characterized in that: The control module (11) is also wirelessly connected to a light intensity sensor (32).

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