Direct current screen fault monitoring system

Abstract

The utility model provides a DC screen fault monitoring system. The device comprises a storage battery pack, a first switch module, a first light module, a second light module, a delay comparison module and a first control module. The storage battery pack is respectively connected with the first light module and the second light module; the first light module and the second light module are both connected with the first switch module, and the first light module and the second light module are connected in parallel; the first control module is respectively connected with the first switch module and the delay comparison module, and the delay comparison module is used for being connected with an electric appliance; the first control module is configured to control the on state of the first switch module according to the information of the delay comparison module; the first light module is configured to display a first color when powered on; the second light module is configured to display a second color when powered on. According to the invention, the fault problem of the DC screen can be found in time.

Description

Technical Field

[0001] The present disclosure relates to the technical field of direct current panels, and in particular to a direct current panel fault monitoring system. Background Art

[0002] DC panels are mainly used in small and medium-sized power plants, hydropower stations, and various substations in power systems. They are suitable for switch opening and closing, instruments, meters, relay protection, and fault lighting in secondary circuits. As power equipment becomes more and more integrated into people's lives, more and more types of electrical appliances are powered by DC panels. In the existing technology, expensive instruments are usually used to monitor DC panel faults, and the monitoring cost of the factory is relatively high. Therefore, a new technology solution is used to monitor DC panel faults. Utility Model Content

[0003] The disclosed embodiment provides a DC panel fault monitoring system to solve the problem of inconvenience in DC panel fault monitoring.

[0004] In a first aspect, an embodiment of the present disclosure provides a DC screen fault monitoring system, the DC screen fault monitoring system comprising:

[0005] A battery pack, a first switch module, a first lighting module, a second lighting module, a delay comparison module, and a first control module;

[0006] The first light module and the second light module are both connected to the first switch module, and the first light module is connected in parallel with the second light module;

[0007] The first control module is connected to the first switch module and the delay comparison module respectively, and the delay comparison module is used to connect to the electrical appliance;

[0008] The first control module is configured to control the on state of the first switch module according to the information of the delay comparison module;

[0009] The first light module is configured to display a first color when powered on;

[0010] The second lighting module is configured to display a second color when powered on.

[0011] In an exemplary embodiment of the present disclosure, a DC screen fault monitoring system is provided, wherein the first switch module comprises:

[0012] SPDT switch;

[0013] The single-pole double-throw switch has a first movable end connected to the second end of the first lighting module, a second movable end connected to the second end of the second lighting module, a second end connected to the control end of the first control module, and a third end connected to the input of the battery pack.

[0014] In an exemplary embodiment of the present disclosure, the DC panel fault monitoring system is characterized in that the delay comparison module includes:

[0015] Signal conversion unit, delay comparison unit;

[0016] The signal conversion unit has an input end connected to the electrical appliance, and an output end connected to the input end of the delay comparison unit;

[0017] The delay comparison unit has an output end connected to the input end of the first control module.

[0018] In an exemplary embodiment of the present disclosure, it is characterized in that the DC screen fault monitoring system includes:

[0019] Control unit;

[0020] The control unit has an output end connected to the control end of the single-pole double-throw switch, and an input end connected to the output end of the delay comparison module.

[0021] In an exemplary embodiment of the present disclosure, it is characterized in that the DC screen fault monitoring system includes:

[0022] Power supply module;

[0023] The power supply module has a first output end connected to the electrical appliance, and a second output end connected to the input end of the battery pack.

[0024] In an exemplary embodiment of the present disclosure, it is characterized in that the DC screen fault monitoring system includes:

[0025] Detection module;

[0026] The detection module has an input end connected to the power supply module, and an output end used to connect to the electrical appliance.

[0027] In an exemplary embodiment of the present disclosure, it is characterized in that the DC screen fault monitoring system includes:

[0028] A second control module;

[0029] The second control module has an input end connected to the output end of the detection module, and an output end used to connect to the electrical appliance.

[0030] In an exemplary embodiment of the present disclosure, it is characterized in that the DC screen fault monitoring system includes:

[0031] A second switch module;

[0032] The second switch module has a first movable end connected to the output end of the second control module, a second movable end connected to the output end of the battery pack, and a fixed end used to connect to the electrical appliance.

[0033] The beneficial effects of the DC panel fault monitoring system provided by the embodiment of the present disclosure are as follows:

[0034] Compared with the prior art, a DC panel fault monitoring system in the present application includes a first switch module, a second lighting module, a first lighting module, a delay comparison module, and a first control module. It can timely monitor whether the current of electrical appliances connected to the DC panel changes. Technical workers can understand whether the current of the electrical appliances is stable by observing the color of the indicator light.

[0035] In addition, the power source of the light in this application is a battery pack. Even if the electrical appliance or the DC panel fails, the light still maintains brightness. When checking the fault, the instrument technician can judge whether the electrical appliance has a fault by the brightness of the indicator light, reducing the difficulty of fault inspection. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] 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.

[0037] Figure 1 It is a structural schematic diagram of a DC panel fault monitoring system provided by an embodiment of the present disclosure;

[0038] Figure 2 It is a structural schematic diagram of another DC panel fault monitoring system provided by an embodiment of the present disclosure;

[0039] Figure 3 It is a structural schematic diagram of another DC panel fault monitoring system provided by an embodiment of the present disclosure. DETAILED DESCRIPTION

[0040] 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.

[0041] 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.

[0042] The following is a detailed description of the implementation of the present disclosure in conjunction with the specific drawings:

[0043] Figure 1 This is a schematic diagram of the structure of a DC panel fault monitoring system provided by an embodiment of the present disclosure. Figure 1 , DC panel fault monitoring system includes:

[0044] A battery pack 11, a first switch module 12, a first lighting module 13, a second lighting module 14, a delay comparison module 15, and a first control module 16;

[0045] The first light module 13 and the second light module 14 are both connected to the first switch module 12, and the first light module 13 and the second light module 14 are connected in parallel;

[0046] The first control module 16 is connected to the first switch module 12 and the delay comparison module 15 respectively, and the delay comparison module 15 is used to connect to the electrical appliance 10;

[0047] The first control module 16 is configured to control the on state of the first switch module 12 according to the information of the delay comparison module 15;

[0048] The first lighting module 13 is configured to display a first color when powered on;

[0049] The second lighting module 14 is configured to display a second color when powered on.

[0050] The battery pack 11 is used to supply power to the first lighting module 14 and the second lighting module 13. The first lighting module 14 can be a red LED and the second lighting module 13 can be a green LED. The first switch module 12 is used to control the connection state of the circuit where the first lighting module 14 or the second lighting module 13 is located. The first control module 16 is used to control the state of the first switch module 12. The delay comparison module 15 is used to compare the current of the electrical appliance 10 at a current moment with the current at a previous moment.

[0051] Specifically, the delay comparison module 15 includes a delay circuit, a comparator and a current detection module, which is used to connect with the electrical appliance 10, monitor the current parameters of the electrical appliance 10, temporarily store the detected current parameters, compare the current parameters at the current moment with the current parameters at the previous moment, and if the comparison results are consistent, that is, the electrical appliance 10 is not faulty, the delay comparison module 15 sends a first comparison signal to the first control module 16, and the first control module 16 sends a first control signal to the first switch module 12 after receiving the first comparison signal, to control the working state of the first switch module 12, so that the first switch module 12 is connected to the circuit where the second light module 13 is located; if the comparison results are inconsistent, that is, there is a fault in the electrical appliance 10, the delay comparison module 15 sends a second comparison signal to the first control module 16, and the first control module 16 sends a second control signal to the first switch module 12 after receiving the second comparison signal, to control the working state of the first switch module 12, so that the first switch module 12 is connected to the circuit where the first light module 14 is located. By observing the working states of the first light module 14 and the second light module 13, the staff can understand whether the electrical appliance 10 has unstable current. If the first light module 14 is a red LED and the second light module 13 is a green LED, the staff can know whether the electrical appliance has unstable current by observing the light colors.

[0052] The cost of the first lighting module 14 and the second lighting module 13 is relatively low, which reduces the cost of monitoring the DC panel fault. In addition, the battery pack 11 supplies power to the first lighting module 14 and the second lighting module 13, and the first lighting module 14 and the second lighting module 13 remain on after the DC panel is powered off, so that maintenance personnel can intuitively judge whether the electrical appliance 10 is faulty through the status of the first lighting module 14 and the second lighting module 13, which is convenient for maintenance personnel to monitor the DC panel fault.

[0053] In one embodiment, Figure 2 is a structural schematic diagram of a DC panel fault monitoring system provided by another embodiment of the present disclosure, Figure 3 FIG. 1 is a schematic diagram of a DC panel fault monitoring system provided by another embodiment of the present disclosure. Figure 2 , Figure 3 , the first switch module 12 includes:

[0054] SPDT switch;

[0055] The single-pole double-throw switch has a first movable end connected to the second end of the first lighting module 14 , a second movable end connected to the second end of the second lighting module 13 , a second end connected to the control end of the first control module 16 , and a third end connected to the input of the battery pack 11 .

[0056] The single-pole double-throw switch is used to receive control information from the first control module 16 and control the connection state of the circuit according to the control information.

[0057] Specifically, after detecting that the current of the electrical appliance 10 has changed, the delay comparison module 15 transmits a signal of the change in the current of the electrical appliance 10 to the first control module 16. After receiving the signal of the change in the current of the electrical appliance 10, the first control module 16 issues a first control instruction to the single-pole double-throw switch. After receiving the first control signal from the first control module 16, the first moving end of the single-pole double-throw switch is closed, connecting the circuit where the first light module 14 is located, so that the first light module 14 displays the first color, and the second moving end of the single-pole double-throw switch is disconnected, and the circuit where the second light module 13 is located is disconnected, so that the second light module 13 is turned off.

[0058] After detecting that the current of the electrical appliance 10 has not changed, the delay comparison module 15 transmits a signal that the current of the electrical appliance 10 has not changed to the first control module 16. After receiving the signal that the current of the electrical appliance 10 has not changed, the first control module 16 issues a second control instruction to the single-pole double-throw switch. After the single-pole double-throw switch receives the second control signal from the first control module 16, the second moving end of the single-blade double-throw switch is closed, and the circuit where the second light module 13 is located is connected, so that the second light module 13 displays the second color, and the first moving end of the single-blade double-throw switch is disconnected, and the circuit where the first light module 14 is disconnected, so that the first light module 14 is turned off.

[0059] By observing the status of the first lighting module 14 and the second lighting module 13, the working status of the electrical appliance 10 connected to the DC panel can be intuitively understood. The second lighting module 13 displays the second color, which means that the electrical appliance 10 is working normally. The first lighting module 14 displays the first color, which means that the working status of the electrical appliance 10 is abnormal, so that maintenance personnel can find the cause of the fault in time.

[0060] In one embodiment, referring to Figure 3 , the delay comparison module 15 includes:

[0061] Signal conversion unit 152, delay comparison unit 151;

[0062] The signal conversion unit 152 has an input end connected to the electrical appliance 10 and an output end connected to the input end of the delay comparison unit 151;

[0063] The delay comparison unit 151 has an output end connected to an input end of the first control module 16 .

[0064] The signal conversion unit 152 is used to convert the current signal into a digital signal. The delay comparison unit 151 is used to compare the digital signal at the current moment with the digital signal at the previous moment, and send the comparison result to the first control module 16 .

[0065] Specifically, after receiving the current signal of the electrical appliance 10, the signal conversion unit 152 converts the current signal into a digital signal and sends the digital signal to the delay comparison unit. After receiving the digital signal, the delay comparison unit retains the digital signal at the current moment for a short time, and compares the digital signal at the current moment with the digital signal at the previous moment to determine whether the digital signal at the current moment is equal to the digital signal at the previous moment. If the results are equal, the electrical appliance 10 is not faulty. At this time, after receiving the non-fault information from the delay comparison unit 151, the first control module 16 controls the first switch module 12 to connect the circuit where the second light module 13 is located and disconnect the circuit where the first light module 14 is located. The second light module 13 displays the second color, and the first light module 14 does not display the first color. If the results are not equal, the electrical appliance 10 is faulty. At this time, after receiving the fault information from the delay comparison unit 151, the first control module 16 controls the first switch module 12 to connect the circuit where the first light module 14 is located and disconnect the circuit where the second light module 13 is located. The first light module 14 displays the first color, and the second light module 13 does not display the second color.

[0066] The delay comparison module monitors the current changes of the electrical appliance 10 in real time and can detect the current changes of the electrical appliance 10. The first control module 16 controls the connection state of the first switch module 12 according to the current change result, and then controls the working states of the first lighting module 14 and the second lighting module 13. The staff can understand the current changes of the electrical appliance 10 through the first lighting module 14 and the second lighting module 13.

[0067] In one embodiment, referring to Figure 3 , the first control module 16 includes:

[0068] Control unit 161;

[0069] The control unit 161 has an output end connected to the control end of the single-pole double-throw switch, and an input end connected to the output end of the delay comparison module 15 .

[0070] The control unit 161 is used to receive the comparison information of the delay comparison module 15 and control the working state of the first switch module 12 according to the comparison information.

[0071] Specifically, after detecting the fault information of the electrical appliance 10, the delay comparison module 15 transmits the fault information to the first control module 16. After receiving the fault information, the control module controls the state of the first switch module 12, so that the circuit where the first light module 14 is located is connected and the circuit where the second light module 13 is located is disconnected, the first light module 14 displays the first color, and the first light module 14 is off.

[0072] The first control module 16 controls the working state of the first switch module 12 according to the information of the delay comparison module 15, and further controls the working state of the first lighting module 14 and the second lighting module 13. The whole process is automatically implemented by hardware, so that the DC panel fault monitoring system of the present application can automatically complete the feedback of fault information.

[0073] In one embodiment, since the voltage of the power grid 9 is different from the voltage required by the electrical appliance 10, the following means are adopted. The DC panel fault monitoring system includes:

[0074] Power supply module 17;

[0075] The power supply module 17 has a first output end for connecting to the electrical appliance 10 , and a second output end connected to an input end of the battery pack 11 .

[0076] The power supply module 17 is used to adjust the voltage of the power grid 9 to the voltage required by the electrical appliance 10 .

[0077] Specifically, after the power grid 9 is connected, the power supply module 17 adjusts the voltage of the power grid 9 to the voltage required by the electrical appliance 10. And when the electrical appliance 10 needs direct current, the power supply module 17 can convert the AC voltage of the power grid 9 into a DC voltage.

[0078] The power supply module 17 adjusts the voltage of the power grid 9 , outputs a voltage suitable for the electrical appliance 10 , and converts the DC voltage into an AC voltage, thereby protecting the normal use of the electrical appliance 10 .

[0079] In one embodiment, referring to Figure 3 , the DC screen fault monitoring system also includes:

[0080] Detection module 18;

[0081] The detection module 18 has an input end connected to the power supply module 17 , and an output end used to connect to the electrical appliance 10 .

[0082] The detection module 18 is used to detect whether the power supply module 17 is faulty.

[0083] Specifically, the detection module 18 detects the output current and voltage of the power supply module 17. If the output current of the power supply module 17 is stable and the voltage is a predetermined value, the power supply module 17 is not faulty. The detection module 18 outputs first information to the second switch module 20, controls the first switch module 12 to connect the circuit through which the power supply module 17 directly supplies power to the electrical appliance 10. At this time, the circuit connecting the battery pack 11 and the electrical appliance 10 is disconnected, and the electrical appliance 10 is powered by the power supply module 17. If the output current of the power supply module 17 is unstable or the voltage is not a predetermined value, the power supply module 17 is faulty. The detection module 18 outputs second information to the second switch module 20, controls the second switch module 20 to connect the circuit through which the battery pack 11 supplies power to the electrical appliance 10. At this time, the circuit through which the power supply module 17 directly supplies power to the electrical appliance 10 is disconnected, and the electrical appliance 10 is powered by the battery pack 11.

[0084] The detection module 18 can detect the working status of the power supply module 17 and take timely measures when a problem occurs in the power supply module 17 to avoid unstable power supply to the electrical appliance 10 due to a failure of the power supply module 17 .

[0085] In one embodiment, referring to Figure 3 , DC panel fault monitoring system includes:

[0086] A second control module 19;

[0087] The second control module 19 has an input end connected to the output end of the detection module 18 , and an output end connected to the electrical appliance 10 .

[0088] The second control module 19 is used to receive the monitoring information of the detection module 18 and control the working state of the second switch module 20 .

[0089] Specifically, the detection module 18 detects the voltage and current information of the power supply module 17. If the detection module 18 detects that the power supply module 17 is faulty, the fault information is sent to the second control module 19. The second control module 19 sends a first instruction to the second switch module 20 according to the fault information. The first instruction causes the second moving end of the second switch module 20 to close and the first moving end to disconnect, connect the circuit that the battery pack 11 supplies power to the electrical appliance 10, and disconnect the circuit that the power supply module 17 directly supplies power to the electrical appliance 10, and the electrical appliance 10 is powered by the battery pack 11; if the detection module 18 detects that the power supply module 17 is not faulty, the non-fault information is sent to the second control module 19. The second control module 19 sends a second instruction to the second switch module 20 according to the non-fault information. The second instruction causes the second moving end of the second switch module 20 to disconnect and the first moving end to close, disconnect the circuit that the battery pack 11 supplies power to the electrical appliance 10, and connect the circuit that the power supply module 17 directly supplies power to the electrical appliance 10, and the electrical appliance 10 is directly powered by the power supply module 17.

[0090] The second control module 19 controls the working state of the second switch module 20 according to the information of the detection module 18. The power supply of the electrical appliance 10 can be switched between the power supply module 17 and the battery pack 11. By selecting a more stable power supply, the stability of the power supply of the electrical appliance 10 is increased.

[0091] A second switch module 20;

[0092] The second switch module 20 has a first movable end connected to the output end of the second control module 19 , a second movable end connected to the output end of the battery pack 11 , and a fixed end for connecting to the electrical appliance 10 .

[0093] The second switch module 20 is used to control the power source of the electrical appliance 10 .

[0094] Specifically, if the detection module 18 detects that the current of the power supply module 17 is unstable or the voltage is not a predetermined value, the detection module 18 sends the information that the detected current is unstable or the voltage is not a predetermined value to the second control module 19. After receiving the information, the second control module 19 controls the second switch module 20 to disconnect the circuit that the power supply module 17 directly supplies power to the electrical appliance 10, and connect the circuit that the battery pack 11 supplies power to the electrical appliance 10, and the electrical appliance 10 is powered by the battery pack 11. If the detection module 18 detects that the current of the power supply module 17 is stable and the voltage is a predetermined value, the detection module 18 sends the detected information to the second control module 19. After receiving the information, the second control module 19 controls the second switch module 20 to connect the circuit that the power supply module 17 directly supplies power to the electrical appliance 10, and disconnect the circuit that the battery pack 11 supplies power to the electrical appliance 10, and the electrical appliance 10 is powered by the power supply module 17.

[0095] The second switch module 20 controls the power supply of the electrical appliance 10 by controlling the on-state of the control circuit. By changing the on-state of the second switch module 20, the power supply with the best power supply can be selected to power the electrical appliance 10, thereby avoiding damage to the electrical appliance 10 caused by unstable input current or voltage not being a predetermined value.

[0096] 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. DC panel fault monitoring system, characterized in that: include: A battery pack, a first switch module, a first lighting module, a second lighting module, a delay comparison module, and a first control module; The first light module and the second light module are both connected to the first switch module, and the first light module is connected in parallel with the second light module; The first control module is connected to the first switch module and the delay comparison module respectively, and the delay comparison module is used to connect to the electrical appliance; The first control module is configured to control the on state of the first switch module according to the information of the delay comparison module; The first lighting module is configured to display a first color when the first switch module is turned on; The second lighting module is configured to display a second color when the first switch module is turned on.

2. The DC panel fault monitoring system according to claim 1, characterized in that: The first switch module comprises: SPDT switch; The single-pole double-throw switch has a first movable end connected to the second end of the first lighting module, a second movable end connected to the second end of the second lighting module, a second end connected to the control end of the first control module, and a third end connected to the input of the battery pack.

3. The DC panel fault monitoring system according to claim 1, characterized in that: The delay comparison module comprises: Signal conversion unit, delay comparison unit; The signal conversion unit has an input end connected to the electrical appliance, and an output end connected to the input end of the delay comparison unit; The delay comparison unit has an output end connected to the input end of the first control module.

4. The DC panel fault monitoring system according to claim 1, characterized in that: The first control module comprises: Control unit; The control unit has an output end connected to the control end of the single-pole double-throw switch, and an input end connected to the output end of the delay comparison module.

5. The DC panel fault monitoring system according to claim 1, characterized in that: The DC screen fault monitoring system also includes: Power supply module; The power supply module has a first output end connected to the electrical appliance, and a second output end connected to the input end of the battery pack.

6. The DC panel fault monitoring system according to claim 5, characterized in that: The DC screen fault monitoring system also includes: Detection module; The detection module has an input end connected to the power supply module, and an output end used to connect to the electrical appliance.

7. The DC panel fault monitoring system according to claim 6, characterized in that: The DC screen fault monitoring system also includes: A second control module; The second control module has an input end connected to the output end of the detection module, and an output end used to connect to the electrical appliance.

8. The DC panel fault monitoring system according to claim 7, characterized in that: The DC screen fault monitoring system also includes: A second switch module; The second switch module has a first movable end connected to the output end of the second control module, a second movable end connected to the output end of the battery pack, and a fixed end used to connect to the electrical appliance.

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