Distributed direct current power supply system

Abstract

The utility model provides a distributed direct current power supply system. The distributed direct-current power supply system comprises a wind power generation module, a light energy power generation module, a first detection module, a comparison module, an AND gate module, a first switch module and a second switch module, the first end of the comparison module is connected with the first end of the first detection module, the second end is connected with the first end of the AND gate module, the third end is connected with the fourth end of the first switch module, and the fourth end is connected with the second switch module; the comparison module is configured to control the on-off states of the first switch module and the second switch module according to the information of the first detection module; the second end of the first detection module is connected with the second end of the wind power generation module, the third end of the first detection module is connected with the second end of the light energy power generation module, and the first detection module is configured to detect whether the generated power of the light energy power generation module and the wind power generation module is stable. Electric energy can be saved, the production cost is reduced, and sufficient power of factories is guaranteed.

Description

Technical Field

[0001] The present disclosure relates to the field of direct current power supply technology, and in particular to a distributed direct current power supply system. Background Art

[0002] In the power system, a reliable DC power supply is necessary to supply power for control, protection, automatic devices, emergency lighting and various DC equipment. The power supply equipment commonly used in the power distribution room of factories and enterprises is a DC panel. When the factory consumes a lot of electricity and the weather changes repeatedly, the external AC power is prone to power outages. In the prior art, the factory uses municipal electricity to ensure the daily electricity consumption of the factory, which consumes electricity and is not energy-saving and environmentally friendly. Therefore, the technical solution in this application is proposed to solve this problem. Utility Model Content

[0003] The embodiments of the present disclosure provide a distributed direct current power supply system to solve the problems of power consumption in factories being environmentally unfriendly and prone to failure.

[0004] In a first aspect, an embodiment of the present disclosure provides a distributed direct current power supply system, comprising:

[0005] Wind power generation module, solar power generation module, first detection module, comparison module, feedback module, first switch module, second switch module;

[0006] The comparison module has a first end connected to the first end of the first detection module, a second end connected to the first end of the feedback module, a third end connected to the fourth end of the first switch module, and a fourth end connected to the second switch module; the comparison module is configured to control the switch states of the first switch module and the second switch module according to the power information of the first detection module;

[0007] The first detection module has a second end connected to the second end of the wind power generation module, and a third end connected to the second end of the solar power generation module; the first detection module is configured to detect whether the power generation of the solar power generation module and the wind power generation module is stable;

[0008] The first switch module has a second end connected to the DC power supply panel, and a third end connected to the second end of the feedback module;

[0009] The second end of the second switch module is used to connect to the DC power supply panel.

[0010] In an exemplary embodiment of the present disclosure, the comparison module includes: a first comparator, a second comparator;

[0011] The first comparator, the s1 end is connected to the first sub-end of the first end of the first detection module, and the out end is respectively connected to the control end of the first switch module and the first sub-end of the first end of the feedback module; the first comparator is configured to judge the output signal of the first sub-end of the first detection module and control the switch state of the first switch module according to the judgment result;

[0012] The second comparator, the s1 end is connected to the second sub-end of the first end of the first detection module, and the out end is respectively connected to the control end of the second switch module and the second sub-end of the first end of the feedback module; the second comparator is configured to judge the output signal of the second sub-end of the first detection module and control the switching state of the second switch module according to the judgment result.

[0013] In an exemplary embodiment of the present disclosure, the feedback module includes: a first detection unit;

[0014] The first detection unit has a first end connected to the out end of the first comparator, a second end connected to the out end of the second comparator, and a third end connected to the control end of the third switch module; the first detection unit is configured to control the switching state of the second switch module according to the output signal of the first comparator s1 end and the output signal of the second comparator s1 end.

[0015] In an exemplary embodiment of the present disclosure, the first detection module includes: a voltage detection unit, a second detection unit;

[0016] The voltage detection unit has a first end connected to the third end of the wind power generation module, a second end connected to the first end of the second detection unit, and a third end connected to the second end of the solar power generation module;

[0017] The second detection unit has a second end connected to the s1 end of the first comparator, and a third end connected to the s1 end of the second comparator; the second detection unit is configured to compare the signal at the second end of the voltage detection unit with a preset signal threshold, and output a high level or a low level according to the comparison result.

[0018] In an exemplary embodiment of the present disclosure, it further includes: a third switch module;

[0019] The third switch module has a first end connected to the second end of the first switch module, and a second end used to connect to the DC power supply panel.

[0020] In an exemplary embodiment of the present disclosure, it further includes: a warning module;

[0021] The alarm module has a first end connected to the fourth end of the second switch module, and a second end connected to the fourth end of the third switch module.

[0022] In an exemplary embodiment of the present disclosure, it further includes: a fourth switch module;

[0023] The fourth switch module has a first end for connecting to the mains, and a second end for connecting to the DC power supply panel.

[0024] In an exemplary embodiment of the present disclosure, it further includes: a second detection module;

[0025] The second detection module has a first end connected to the third end of the solar power generation module, a second end connected to the first end of the wind power generation module, and a third end connected to the control end of the fourth switch module.

[0026] The embodiments of the present disclosure provide a distributed DC power supply system with the following beneficial effects:

[0027] In this application, the use of wind power generation modules and solar power generation modules converts wind energy and solar energy in nature into electrical energy, reducing consumption and lowering the production cost of the factory. In addition, the total power supply of the application also includes city electricity. When wind energy and solar energy are insufficient, city electricity is used to provide power generation, ensuring sufficient power for the factory. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0029] Figure 1 is a structural schematic diagram of a distributed direct current power supply system provided by an embodiment of the present disclosure;

[0030] Figure 2 is a structural schematic diagram of another distributed direct current power supply system provided by an embodiment of the present disclosure;

[0031] Figure 3 It is a structural schematic diagram of another distributed DC power supply system provided by an embodiment of the present disclosure. DETAILED DESCRIPTION

[0032] In order to enable people in the technical field to better understand the present solution, the technical solution in the embodiment of the present solution will be clearly described below in conjunction with the drawings in the embodiment of the present solution. Obviously, the described embodiment is an embodiment of a part of the present solution, not all of the embodiments. Based on the embodiments in the present solution, all other embodiments obtained by ordinary technicians in the field without creative work should fall within the scope of protection of the present solution.

[0033] The term "including" and any other variations in the specification and claims of this solution and the above drawings mean "including but not limited to", and is intended to cover non-exclusive inclusions and is not limited to the examples listed in the text. In addition, the terms "first" and "second" are used to distinguish different objects, not to describe a specific order.

[0034] The following is a detailed description of the implementation of the present disclosure in conjunction with the specific drawings:

[0035] With the increasing application of DC power supply panels, the requirements for DC power supply panels have become more diverse. Since the daily electricity cost of the factory is very high, the following technical means are adopted. Figure 1 A schematic diagram of the structure of a distributed DC power supply system provided by an embodiment of the present disclosure. Figure 1 , the distributed DC power supply system comprises:

[0036] Wind power generation module 11, solar power generation module 12, first detection module 13, comparison module 14, feedback module 15, first switch module 16, second switch module 17;

[0037] A comparison module 14, a first end of which is connected to a first end of the first detection module 13, a second end of which is connected to a first end of the feedback module 15, a third end of which is connected to a fourth end of the first switch module 16, and a fourth end of which is connected to the second switch module 17; the comparison module 14 is configured to control the switch states of the first switch module 16 and the second switch module 17 according to the power information of the first detection module 13;

[0038] The first detection module 13 has a second end connected to the second end of the wind power generation module 11 and a third end connected to the second end of the solar power generation module 12; the first detection module 13 is configured to detect whether the power generation of the solar power generation module 12 and the wind power generation module 11 is stable;

[0039] A first switch module 16, a second end of which is used to be connected to the DC power supply panel 10, and a third end of which is connected to the second end of the feedback module 15;

[0040] The second switch module 17 has a second end for connecting to the DC power supply panel 10 .

[0041] The wind power generation module 11 is used to convert wind energy into electrical energy, and the photovoltaic power generation module 12 is used to convert photovoltaic energy into electrical energy. The first detection module 13 is used to detect the power generation of the wind power generation module 11 and the power generation of the photovoltaic power generation module 12. The comparison module 14 is used to compare the results of the first detection module 13, and send an output signal after the comparison to the first switch module 16 and the second switch module 17. The feedback module 15 is used to detect the output information of the comparison module 14 and send a signal to the first switch module 16. The first switch module 16 is used to control the output state of the wind power generation module 11. The second switch module 17 is used to control the output state of the photovoltaic power generation module 12.

[0042] Specifically, the wind power generation module 11 converts wind energy into electrical energy, the first detection module 13 monitors the power generation voltage of the wind power generation module 11, and compares the detection result with the preset voltage parameter, and outputs the comparison result to the comparison module 14. If the power generation voltage is greater than the preset voltage parameter, the comparison module 14 outputs a high level to the first switch module 16, controls the first switch module 16 to close, and at this time the wind power generation module 11 outputs voltage to the DC power supply panel 10. If the power generation voltage is less than the preset voltage parameter, the comparison module 14 outputs a low level to the first switch module 16, controls the first switch module 16 to open, and at this time the wind power generation module 11 cannot output voltage to the DC power supply panel 10.

[0043] The photovoltaic power generation module 12 converts light energy into electrical energy. The first detection module 13 monitors the power generation voltage of the photovoltaic power generation module 12, compares the detection result with the preset voltage parameter, and outputs the comparison result to the comparison module 14. If the power generation voltage is greater than the preset voltage parameter, the comparison module 14 outputs a high level to the second switch module 17 to control the second switch module 17 to close. At this time, the photovoltaic power generation module 12 outputs voltage to the DC power supply panel 10. If the power generation voltage is less than the preset voltage parameter, the comparison module 14 outputs a low level to the second switch module 17 to control the second switch module 17 to open. At this time, the photovoltaic power generation module 12 cannot output voltage to the DC power supply panel 10.

[0044] If the power generation voltages of the wind power generation module 11 and the photovoltaic power generation module 12 are both greater than the preset voltage parameter, the comparison module 14 outputs a high level to the first switch module 16 and the second switch module 17 respectively. After the feedback module 15 detects that both output ends of the comparison module 14 are at a high level, it controls the first switch module 16 to disconnect. At this time, the wind power generation module 11 cannot output voltage to the DC power supply panel 10. If the power generation voltages of the wind power generation module 11 and the photovoltaic power generation module 12 are both greater than the preset voltage parameter, the feedback module 15 does not send a control signal to the first switch module 16.

[0045] The complementary power generation of the wind power generation module 11 and the solar power generation module 12 ensures the stability of the factory's electricity consumption and saves the factory's electricity costs.

[0046] In one embodiment, since the output states of the wind power generation module 11 and the solar power generation module 12 need to be controlled, the following means are adopted. Figure 2 It is a structural schematic diagram of another distributed DC power supply system provided by an embodiment of the present disclosure. Figure 3 is a structural diagram of another distributed DC power supply system provided by an embodiment of the present disclosure. Figure 2 , Figure 3 The comparison module 14 comprises:

[0047] A first comparator 141 and a second comparator 142;

[0048] The first comparator 141, the s1 end is connected to the first sub-end of the first end of the first detection module 13, and the out end is respectively connected to the control end of the first switch module 16 and the first sub-end of the first end of the feedback module 15; the first comparator 141 is configured to judge the output signal of the first sub-end of the first detection module 13 and control the switch state of the first switch module 16 according to the judgment result;

[0049] The second comparator 142, the sl end is connected to the second sub-end of the first end of the first detection module 13, and the out end is respectively connected to the control end of the second switch module 17 and the second sub-end of the first end of the feedback module 15; the second comparator 142 is configured to judge the output signal of the second sub-end of the first detection module 13 and control the switching state of the second switch module 17 according to the judgment result.

[0050] The first comparator 141 is used to compare the level of the signal processed by the first detection module 13 to the level of the wind power generation module 11. The second comparator 142 is used to compare the level of the signal processed by the first detection module 13 to the level of the light power generation module 12.

[0051] Specifically, the a-end of the first comparator 141 and the second comparator 142 are both defaulted to a low level, and the b-end are both defaulted to a high level. If the s1-end of the first comparator 141 and the second comparator 142 inputs a high level, the out of the first comparator 141 and the second comparator 142 outputs the a-end level, that is, a low level. If the s1-end of the first comparator 141 and the second comparator 142 inputs a low level, the out of the first comparator 141 and the second comparator 142 outputs the b-end level, that is, a high level.

[0052] The first detection module 13 detects and compares the power generation voltage of the wind power generation module 11. If the power generation voltage of the wind power generation module 11 is greater than the preset voltage parameter, the first detection module 13 outputs a high level to the s1 terminal of the first comparator 141, and the out terminal of the first comparator 141 outputs the b-terminal level, that is, a high level. If the power generation voltage of the wind power generation module 11 is less than the preset voltage parameter, the first detection module 13 outputs a low level to the s1 terminal of the first comparator 141, and the out terminal of the first comparator 141 outputs the a-terminal level, that is, a low level.

[0053] The first detection module 13 detects and compares the power generation voltage of the photovoltaic power generation module 12. If the power generation voltage of the photovoltaic power generation module 12 is greater than the preset voltage parameter, the first detection module 13 outputs a high level to the s1 terminal of the second comparator 142, and the out terminal of the second comparator 142 outputs the b-terminal level, that is, a high level. If the power generation voltage of the photovoltaic power generation module 12 is less than the preset voltage parameter, the first detection module 13 outputs a low level to the s1 terminal of the second comparator 142, and the out terminal of the second comparator 142 outputs the a-terminal level, that is, a low level.

[0054] The use of the first comparator 141 and the second comparator 142 reduces the production cost and realizes the control of the output states of the wind power generation module 11 and the solar power generation module 12 .

[0055] In one embodiment, the solution in the present application also includes a situation that the power generation voltages of the wind power generation module 11 and the solar power generation module 12 are both greater than the preset voltage parameter. Figure 3 , the feedback module 15 includes:

[0056] A first detection unit 151;

[0057] The first detection unit 151 has a first end connected to the out end of the first comparator 141, a second end connected to the out end of the second comparator 142, and a third end connected to the control end of the third switch module 18; the detection unit is configured to control the switching state of the second switch module 17 according to the output signal of the sl end of the first comparator 141 and the output signal of the sl end of the second comparator 142.

[0058] The first detection unit 151 is used to detect the output voltage of the comparison module 14 .

[0059] Specifically, if both output voltages of the comparison module 14 are high voltages, the feedback module 15 sends a closing instruction to the first switch module 16 after receiving the two high voltage signals. If one of the two output voltages of the comparison module 14 is not a high voltage, the feedback module 15 does not send an instruction to the first switch module 16 after receiving the two voltage signals.

[0060] The feedback module 15 supplements a possible situation of the technical solution in the present application.

[0061] In one embodiment, the power generation voltage signals of the wind power generation module 11 and the solar power generation module 12 need to be judged whether they meet the industrial production information. Figure 3 , the first detection module 13 includes:

[0062] A voltage detection unit 131 and a second detection unit 132;

[0063] The voltage detection unit 131 has a first end connected to the third end of the wind power generation module 11 , a second end connected to the first end of the second detection unit 132 , and a third end connected to the second end of the solar power generation module 12 ;

[0064] The second detection unit 132 has a second end connected to the s1 end of the first comparator 141, and a third end connected to the s1 end of the second comparator 142; the second detection unit 132 is configured to compare the signal at the second end of the voltage detection unit 131 with a preset signal threshold, and output a high level or a low level according to the comparison result.

[0065] The voltage detection unit 131 is used to detect the power generation voltage of the wind power generation module 11 and the solar power generation module 12. The detection unit is used to compare the voltage signals of the wind power generation module 11 and the solar power generation module 12 with the preset voltage parameters.

[0066] Specifically, the voltage detection unit 131 detects the power generation voltage of the wind power generation module 11 and the photovoltaic power generation module 12, and sends the detected voltage signals of the wind power generation module 11 and the photovoltaic power generation module 12 to the detection module, respectively. The detection module compares the received voltage signals of the wind power generation module 11 and the photovoltaic power generation module 12 with the preset voltage signals. If the power generation voltage of the wind power generation module 11 is greater than the preset voltage parameter, the detection module inputs a high level to the s1 end of the first comparator 141, and if the power generation voltage of the wind power generation module 11 is less than the preset voltage parameter, the detection module inputs a low level to the s1 end of the first comparator 141. If the power generation voltage of the photovoltaic power generation module 12 is less than the preset voltage parameter, the detection module inputs a high level to the s1 end of the second comparator 142, and if the power generation voltage of the photovoltaic power generation module 12 is less than the preset voltage parameter, the detection module inputs a low level to the s1 end of the second comparator 142.

[0067] The first detection module 13 converts the power generation voltage of the wind power generation module 11 and the solar power generation module 12 into an electrical signal, and converts it into a high level or a low level according to a preset voltage signal, so that subsequent modules can process the signal.

[0068] In one embodiment, the first switch module 16 receives signals from the first comparator 141 and the feedback module 15 at the same time, which places high demands on the first switch module 16 and increases the manufacturing cost. In order to reduce the production cost, the following means are adopted. Figure 3 , also includes:

[0069] A third switch module 18;

[0070] The third switch module 18 has a first end connected to the second end of the first switch module 16 , and a second end used to be connected to the DC power supply panel 10 .

[0071] The third switch module 18 is used to control the output state of the wind power generation module 11 .

[0072] Specifically, the third switch module 18 is opened after receiving the first instruction from the feedback module 15 , and remains closed when no first instruction from the feedback module 15 is received.

[0073] The application of the third switch module 18 reduces the production cost of the product in this application.

[0074] In one embodiment, the staff needs to know the comparison result between the power generation voltage of the wind power generation module 11 or the solar power generation module 12 and the preset voltage parameter. Therefore, the following means are adopted. Figure 3 , also includes:

[0075] Warning module 20;

[0076] The alarm module 20 has a first end connected to the fourth end of the second switch module 17 , and a second end connected to the fourth end of the third switch module 18 .

[0077] The warning module 20 is used to remind the staff whether the power generation voltage of the wind power generation module 11 or the solar power generation module 12 is greater than a preset voltage parameter.

[0078] The warning module 20 helps the staff to quickly understand whether the power generation voltage of the wind power generation module 11 or the solar power generation module 12 is greater than a preset voltage parameter.

[0079] In one embodiment, there is a situation where the power generation voltage of the wind power generation module 11 or the solar power generation module 12 is less than the preset voltage parameter. In view of this situation, the following technical means are adopted. Figure 3 , also includes:

[0080] Fourth switch module 19;

[0081] The fourth switch module 19 has a first end for connecting to the mains 22 , and a second end for connecting to the DC power supply panel 10 .

[0082] The fourth switch module 19 is used to control the output state of the AC power 22 to the DC power panel 10 .

[0083] In one embodiment, the fourth switch module 19 needs to determine the switch state according to the power generation voltage of the wind power generation module 11 and the solar power generation module 12. In view of this situation, the following technical means are adopted. Figure 3 , also includes:

[0084] A second detection module 21;

[0085] The second detection module 21 has a first end connected to the third end of the solar power generation module 12 , a second end connected to the first end of the wind power generation module 11 , and a third end connected to the control end of the fourth switch module 19 .

[0086] The second detection module 21 is used to detect whether the power generation voltages of the wind power generation module 11 and the solar power generation module 12 are both less than a preset voltage parameter.

[0087] Specifically, if the power generation voltages of the wind power generation module 11 and the solar power generation module 12 are both less than the preset voltage parameter, the fourth switch module 19 is controlled to be closed. If the power generation voltages of the wind power generation module 11 and the solar power generation module 12 do not satisfy the requirement that they are both less than the preset voltage parameter, the fourth switch module 19 is controlled to be opened.

[0088] When the second detection module 21 detects that the power generation voltages of the wind power generation module 11 and the solar power generation module 12 are both less than the preset voltage parameters, the fourth switch module 19 can be controlled to close, and the AC power 22 can be used to power the DC power supply panel 10 to avoid power failure of the DC power supply panel 10.

[0089] The above embodiments are only used to illustrate the technical solutions of the present disclosure, rather than to limit them. Although the present disclosure has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present disclosure.

Claims

1. A distributed DC power supply system, characterized in that: include: Wind power generation module, solar power generation module, first detection module, comparison module, feedback module, first switch module, second switch module; The comparison module has a first end connected to the first end of the first detection module, a second end connected to the first end of the feedback module, a third end connected to the fourth end of the first switch module, and a fourth end connected to the second switch module; the comparison module is configured to control the switch states of the first switch module and the second switch module according to the power information of the first detection module; The first detection module has a second end connected to the second end of the wind power generation module, and a third end connected to the second end of the solar power generation module; the first detection module is configured to detect whether the power generation of the solar power generation module and the wind power generation module is stable; The first switch module has a second end connected to the DC power supply panel, and a third end connected to the second end of the feedback module; The second end of the second switch module is used to connect to the DC power supply panel.

2. The distributed DC power supply system according to claim 1, characterized in that: The comparison module comprises: a first comparator and a second comparator; The first comparator, the s1 end is connected to the first sub-end of the first end of the first detection module, and the out end is respectively connected to the control end of the first switch module and the first sub-end of the first end of the feedback module; the first comparator is configured to judge the output signal of the first sub-end of the first detection module and control the switch state of the first switch module according to the judgment result; The second comparator, the s1 end is connected to the second sub-end of the first end of the first detection module, and the out end is respectively connected to the control end of the second switch module and the second sub-end of the first end of the feedback module; the second comparator is configured to judge the output signal of the second sub-end of the first detection module and control the switching state of the second switch module according to the judgment result.

3. The distributed DC power supply system according to claim 2, characterized in that: The feedback module comprises: A first detection unit; The first detection unit has a first end connected to the out end of the first comparator, a second end connected to the out end of the second comparator, and a third end connected to the control end of the third switch module; the first detection unit is configured to control the switching state of the second switch module according to the output signal of the first comparator s1 end and the output signal of the second comparator s1 end.

4. The distributed DC power supply system according to claim 1, characterized in that: The first detection module comprises: A voltage detection unit and a second detection unit; The voltage detection unit has a first end connected to the third end of the wind power generation module, a second end connected to the first end of the second detection unit, and a third end connected to the second end of the solar power generation module; The second detection unit has a second end connected to the s1 end of the first comparator, and a third end connected to the s1 end of the second comparator; the second detection unit is configured to compare the signal at the second end of the voltage detection unit with a preset signal threshold, and output a high level or a low level according to the comparison result.

5. The distributed DC power supply system according to claim 1, characterized in that: Also includes: A third switch module; The third switch module has a first end connected to the second end of the first switch module, and a second end used to connect to the DC power supply panel.

6. The distributed DC power supply system according to claim 5, characterized in that: Also includes: Warning module; The alarm module has a first end connected to the fourth end of the second switch module, and a second end connected to the fourth end of the third switch module.

7. The distributed DC power supply system according to claim 1, characterized in that: Also includes: a fourth switch module; The fourth switch module has a first end for connecting to the mains, and a second end for connecting to the DC power supply panel.

8. The distributed DC power supply system according to claim 7, characterized in that: Also includes: A second detection module; The second detection module has a first end connected to the third end of the solar power generation module, a second end connected to the first end of the wind power generation module, and a third end connected to the control end of the fourth switch module.

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