Micro-current charging device for electrified indication hole of switch cabinet

Abstract

The invention provides a micro-current charging device for a switch cabinet electrification indication hole, and the device comprises a low-resistance shunting module which is used for outputting the current of a combined charging module to a battery of a signal collection device and charging the battery; the combined charging module is used for outputting current of a first charging loop and a second charging loop in the combined charging module to the low-resistance shunting module; the first charging loop is a loop between the first indication hole or the second indication hole or the third indication hole and equipment ground phase voltage; the second charging loop is a loop of input loop line voltage between the first indication hole and the second indication hole, between the second indication hole and the third indication hole and between the third indication hole and the first indication hole. According to the invention, the battery of the charged indication hole signal acquisition device is supplied with power, the acquisition device can stably transmit the voltage / phase and other data information of the charged indication hole to the background for a long time without replacing the battery, and the operation and maintenance cost is reduced, and the human input is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of electric power, in particular to a micro-current charging device for a live indicator hole of a switch cabinet. Background Art

[0002] In the promotion and application of distribution network automation operation and maintenance management, the unmanned remote control operation mode of the distribution network is the primary task, which can effectively release the human resources of the team operation. The number of applications and benefits of unmanned remote control operation of the distribution network will show exponential growth. The safety risks of unmanned remote control closing ring power transfer, morning exercises and other operations will be greatly increased. Real-time grasp of whether the different power sources of the ring network cabinet have the conditions for closing the ring has gradually become a necessary condition for unmanned remote control. However, in order to realize real-time monitoring of parameters such as voltage / phase of the ring network cabinet, it is often necessary to install a collection device. However, the power supply problem of the collection device has always been a challenge. First, the main reason for the short battery life of traditional battery power supply is that the battery capacity is limited, and the collection device consumes power during operation. Second, the power supply battery of the collection device has self-discharge. Over time, the battery power will be exhausted. Both of the above situations cannot meet the needs of long-term monitoring. Third, the need to replace the battery regularly not only increases the maintenance cost, but also involves manpower investment and time arrangement. At the same time, during the battery replacement process, it may cause certain interference to the normal operation of the ring network cabinet. Summary of the invention

[0003] The purpose of the present invention is to propose a micro-current charging device for the live indicator hole of the switch cabinet, so as to solve the technical problem of how to realize the signal acquisition device to work for a long time without power outage and realize real-time monitoring of the operating status of the ring network cabinet.

[0004] On the one hand, a micro-current charging device for a live indicator hole of a switch cabinet is provided, comprising:

[0005] A low-resistance shunt module and a combined charging module; the low-resistance shunt module is used to output the current of the combined charging module to the battery of the signal acquisition device and charge the battery to achieve the maximum value of the charging current of the signal acquisition device; the combined charging module is used to output the current of the first charging circuit and the second charging circuit therein to the low-resistance shunt module;

[0006] The first charging circuit is a circuit between the first indicator hole or the second indicator hole or the third indicator hole and the ground phase voltage of the equipment; the second charging circuit is a circuit of the input loop line voltage between the first indicator hole and the second indicator hole, between the second indicator hole and the third indicator hole, and between the third indicator hole and the first indicator hole.

[0007] Preferably, the first charging circuit includes a diode D1 and a voltage-stabilizing diode ZD1 connected to the first indicator hole, the other end of the diode D1 is respectively connected to the capacitor C1 and the diode D2, the other end of the voltage-stabilizing diode ZD1 is respectively connected to the other end of the capacitor C1, the capacitor C2, the capacitor C3, the capacitor C4 and the capacitor C5, the other end of the diode D2 is respectively connected to the other end of the capacitor C2 and the diode D3, the other end of the diode D3 is respectively connected to the other end of the capacitor C3 and the diode D4, and the other end of the diode D4 is respectively connected to the other end of the capacitor C4. The other end of the diode D5 is connected to the other end of the capacitor C5 and the diode D5 respectively, the other end of the diode D5 is connected to the resistor R1 and the resistor R2 respectively, the other end of the resistor R1 is connected to the gate of the field effect tube N-MOS, one end of the voltage regulator diode ZD2 and the diode D6 respectively, the other end of the resistor R2 is connected to the drain of the field effect tube N-MOS, the source of the field effect tube N-MOS is connected to the output end, the other end of the diode D6 is connected to the current output end of the current relay, and the other end of the voltage regulator diode ZD2 is connected to the equipment ground phase.

[0008] Preferably, the first charging circuit includes a diode D1 and a voltage-stabilizing diode ZD1 connected to the second indicator hole, the other end of the diode D1 is respectively connected to the capacitor C1 and the diode D2, the other end of the voltage-stabilizing diode ZD1 is respectively connected to the other end of the capacitor C1, the capacitor C2, the capacitor C3, the capacitor C4 and the capacitor C5, the other end of the diode D2 is respectively connected to the other end of the capacitor C2 and the diode D3, the other end of the diode D3 is respectively connected to the other end of the capacitor C3 and the diode D4, and the other end of the diode D4 is respectively connected to the other end of the capacitor C4. The other end of the diode D5 is connected to the other end of the capacitor C5 and the diode D5 respectively, the other end of the diode D5 is connected to the resistor R1 and the resistor R2 respectively, the other end of the resistor R1 is connected to the gate of the field effect tube N-MOS, one end of the voltage regulator diode ZD2 and the diode D6 respectively, the other end of the resistor R2 is connected to the drain of the field effect tube N-MOS, the source of the field effect tube N-MOS is connected to the output end, the other end of the diode D6 is connected to the current output end of the current relay, and the other end of the voltage regulator diode ZD2 is connected to the equipment ground phase.

[0009] Preferably, the first charging circuit includes a diode D1 and a voltage-stabilizing diode ZD1 connected to the third indicator hole, the other end of the diode D1 is respectively connected to the capacitor C1 and the diode D2, the other end of the voltage-stabilizing diode ZD1 is respectively connected to the other end of the capacitor C1, the capacitor C2, the capacitor C3, the capacitor C4 and the capacitor C5, the other end of the diode D2 is respectively connected to the other end of the capacitor C2 and the diode D3, the other end of the diode D3 is respectively connected to the other end of the capacitor C3 and the diode D4, and the other end of the diode D4 is respectively connected to the other end of the capacitor C4. The other end of the diode D5 is connected to the other end of the capacitor C5 and the diode D5 respectively, the other end of the diode D5 is connected to the resistor R1 and the resistor R2 respectively, the other end of the resistor R1 is connected to the gate of the field effect tube N-MOS, one end of the voltage regulator diode ZD2 and the diode D6 respectively, the other end of the resistor R2 is connected to the drain of the field effect tube N-MOS, the source of the field effect tube N-MOS is connected to the output end, the other end of the diode D6 is connected to the current output end of the current relay, and the other end of the voltage regulator diode ZD2 is connected to the equipment ground phase.

[0010] Preferably, the second charging circuit includes a diode D1 connected to the first indicator hole, a diode D2 connected to the second indicator hole, and a diode D3 connected to the third indicator hole, and the diode D1, the diode D2, and the diode D3 are respectively connected to the capacitor C1, the resistor R1, and the resistor R2.

[0011] Preferably, the second charging circuit further includes: the other end of the resistor R1 is respectively connected to the gate of the field effect transistor N-MOS, the voltage regulator diode ZD1 and the diode D4.

[0012] Preferably, the second charging circuit further includes: the other end of the resistor R2 is connected to the drain of the field effect transistor N-MOS, and the source of the field effect transistor N-MOS is connected to the battery of the signal acquisition device.

[0013] Preferably, the second charging circuit further includes: the other end of the capacitor C1, the other end of the voltage-stabilizing diode ZD1 and the battery of the signal acquisition device are respectively connected to the equipment ground phase.

[0014] In summary, the implementation of the embodiments of the present invention has the following beneficial effects:

[0015] The micro-current charging device for the live indicator hole of the switch cabinet provided by the present invention supplies power to the battery of the signal acquisition device of the live indicator hole of the switch cabinet. Without replacing the battery of the acquisition device, it can ensure that the acquisition device transmits the voltage / phase and other data information of the live indicator hole to the background in a long-term and stable manner, and ensures the accuracy and punctuality of live ring closing under the premise of reducing operation and maintenance costs and reducing manpower investment. It can timely discover hidden dangers such as phase information errors; through early warning, timely adjust the phase sequence to ensure the correct phase sequence, accurately and punctually complete the live ring closing work, and avoid safety accidents such as personal injury and equipment damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, 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 invention. For ordinary technicians in this field, without paying creative labor, other drawings obtained based on these drawings still belong to the scope of the present invention.

[0017] Figure 1 The present invention is a schematic diagram of a micro-current charging device for a live indicator hole of a switch cabinet in an embodiment of the present invention.

[0018] Figure 2 Schematic diagram of a first charging circuit in an embodiment of the present invention.

[0019] Figure 3 Schematic diagram of a first charging circuit in an embodiment of the present invention.

[0020] Figure 4 Schematic diagram of a first charging circuit in an embodiment of the present invention.

[0021] Figure 5 Schematic diagram of a second charging circuit in an embodiment of the present invention.

[0022] Figure 6 The figure is a schematic diagram of an interface communication circuit in an embodiment of the present invention.

[0023] Figure 7 It is a schematic diagram of a system power supply stabilizing circuit in an embodiment of the present invention.

[0024] Figure 8 A schematic diagram of powering a system in an embodiment of the present invention.

[0025] Fig. 9 It is a schematic diagram of a system master control and wireless transmission circuit in an embodiment of the present invention. DETAILED DESCRIPTION

[0026] In order to make the objectives, technical solutions and advantages of the present invention more clear, the present invention will be further described in detail below with reference to the accompanying drawings.

[0027] like Figure 1 , is a schematic diagram of an embodiment of a micro-current charging device for a live indicator hole of a switch cabinet provided by the present invention. In this embodiment, it includes:

[0028] A low-resistance shunt module and a combined charging module; the low-resistance shunt module is used to output the current of the combined charging module to the battery of the signal acquisition device and charge the battery to achieve the maximum value of the charging current of the signal acquisition device; the combined charging module is used to output the current of the first charging circuit and the second charging circuit therein to the low-resistance shunt module; the first charging circuit is the circuit between the first indicator hole or the second indicator hole or the third indicator hole and the ground phase voltage of the equipment; the second charging circuit is the circuit of the input circuit line voltage between the first indicator hole and the second indicator hole, between the second indicator hole and the third indicator hole, and between the third indicator hole and the first indicator hole. It can be understood that it includes a low-resistance shunt circuit and a charged indicator hole combined charging structure, and the low-resistance shunt circuit uses the current of the charged indicator hole to charge the battery of the signal acquisition device to ensure that the charging current of the acquisition device is maximized. The charging structure of the combined charging of the live indicator hole is that L1 / L2 / L3 and the ground phase voltage of the equipment form a charging circuit; the other is that L1-L2, L2-L3, L3-L1, three groups of input loop line voltages form a charging circuit; the charging efficiency of the above two circuits is increased by more than three times, ensuring long-term stable power supply of the signal acquisition device. It should be noted that the device also includes, such as Figures 6 to 9 The interface communication circuit, system power supply voltage stabilization circuit, system power supply composition, system master control and wireless transmission circuit shown are conventional settings in this field and are not the core content, so they will not be repeated here.

[0029] An embodiment, such as Figure 2As shown, the first charging circuit includes a diode D1 and a voltage-stabilizing diode ZD1 connected to the first indicator hole, the other end of the diode D1 is respectively connected to the capacitor C1 and the diode D2, the other end of the voltage-stabilizing diode ZD1 is respectively connected to the other end of the capacitor C1, the capacitor C2, the capacitor C3, the capacitor C4 and the capacitor C5, the other end of the diode D2 is respectively connected to the other end of the capacitor C2 and the diode D3, the other end of the diode D3 is respectively connected to the other end of the capacitor C3 and the diode D4, the other end of the diode D4 is respectively connected to the other end of the capacitor C4 One end and a diode D5, the other end of the diode D5 is respectively connected to the other end of the capacitor C5 and the diode D5, the other end of the diode D5 is respectively connected to the resistor R1 and the resistor R2, the other end of the resistor R1 is respectively connected to the gate of the field effect tube N-MOS, one end of the voltage regulator diode ZD2 and the diode D6, the other end of the resistor R2 is connected to the drain of the field effect tube N-MOS, the source of the field effect tube N-MOS is connected to the output end, the other end of the diode D6 is connected to the current output end of the current relay, and the other end of the voltage regulator diode ZD2 is connected to the equipment ground phase.

[0030] An embodiment, such as Figure 3 As shown, the first charging circuit includes a diode D1 and a voltage-stabilizing diode ZD1 connected to the second indicator hole, the other end of the diode D1 is respectively connected to the capacitor C1 and the diode D2, the other end of the voltage-stabilizing diode ZD1 is respectively connected to the other end of the capacitor C1, the capacitor C2, the capacitor C3, the capacitor C4 and the capacitor C5, the other end of the diode D2 is respectively connected to the other end of the capacitor C2 and the diode D3, the other end of the diode D3 is respectively connected to the other end of the capacitor C3 and the diode D4, the other end of the diode D4 is respectively connected to the other end of the capacitor C4 One end and a diode D5, the other end of the diode D5 is respectively connected to the other end of the capacitor C5 and the diode D5, the other end of the diode D5 is respectively connected to the resistor R1 and the resistor R2, the other end of the resistor R1 is respectively connected to the gate of the field effect tube N-MOS, one end of the voltage regulator diode ZD2 and the diode D6, the other end of the resistor R2 is connected to the drain of the field effect tube N-MOS, the source of the field effect tube N-MOS is connected to the output end, the other end of the diode D6 is connected to the current output end of the current relay, and the other end of the voltage regulator diode ZD2 is connected to the equipment ground phase.

[0031] An embodiment, such as Figure 4As shown, the first charging circuit includes a diode D1 and a voltage-stabilizing diode ZD1 connected to the third indicator hole, the other end of the diode D1 is respectively connected to the capacitor C1 and the diode D2, the other end of the voltage-stabilizing diode ZD1 is respectively connected to the other end of the capacitor C1, the capacitor C2, the capacitor C3, the capacitor C4 and the capacitor C5, the other end of the diode D2 is respectively connected to the other end of the capacitor C2 and the diode D3, the other end of the diode D3 is respectively connected to the other end of the capacitor C3 and the diode D4, the other end of the diode D4 is respectively connected to the other end of the capacitor C4 One end and a diode D5, the other end of the diode D5 is respectively connected to the other end of the capacitor C5 and the diode D5, the other end of the diode D5 is respectively connected to the resistor R1 and the resistor R2, the other end of the resistor R1 is respectively connected to the gate of the field effect tube N-MOS, one end of the voltage regulator diode ZD2 and the diode D6, the other end of the resistor R2 is connected to the drain of the field effect tube N-MOS, the source of the field effect tube N-MOS is connected to the output end, the other end of the diode D6 is connected to the current output end of the current relay, and the other end of the voltage regulator diode ZD2 is connected to the equipment ground phase.

[0032] An embodiment, such as Figure 5 As shown, the second charging circuit includes a diode D1 connected to the first indicator hole, a diode D2 connected to the second indicator hole, and a diode D3 connected to the third indicator hole, wherein the diode D1, the diode D2, and the diode D3 are respectively connected to the capacitor C1, the resistor R1, and the resistor R2. The other end of the resistor R1 is respectively connected to the gate of the field effect transistor N-MOS, the voltage regulator diode ZD1, and the diode D4. The other end of the resistor R2 is connected to the drain of the field effect transistor N-MOS, and the source of the field effect transistor N-MOS is connected to the battery of the signal acquisition device. The other end of the capacitor C1, the other end of the voltage regulator diode ZD1, and the battery of the signal acquisition device are respectively connected to the equipment ground phase.

[0033] In summary, the implementation of the embodiments of the present invention has the following beneficial effects:

[0034] The micro-current charging device for the live indicator hole of the switch cabinet provided by the present invention supplies power to the battery of the signal acquisition device of the live indicator hole of the switch cabinet. Without replacing the battery of the acquisition device, it can ensure that the acquisition device transmits the voltage / phase and other data information of the live indicator hole to the background in a long-term and stable manner, and ensures the accuracy and punctuality of live ring closing under the premise of reducing operation and maintenance costs and reducing manpower investment. It can timely discover hidden dangers such as phase information errors; through early warning, timely adjust the phase sequence to ensure the correct phase sequence, accurately and punctually complete the live ring closing work, and avoid safety accidents such as personal injury and equipment damage.

[0035] The above disclosure is only the preferred embodiment of the present invention, which certainly cannot be used to limit the scope of the present invention. Therefore, equivalent changes made according to the claims of the present invention are still within the scope of the present invention.

Claims

1. A micro-current charging device for the live indicator hole of a switch cabinet, characterized in that: include: Low resistance shunt module and combined charging module; The low-resistance shunt module is used to output the current of the combined charging module to the battery of the signal acquisition device and charge the battery to achieve the maximum value of the charging current of the signal acquisition device; the combined charging module is used to output the current of the first charging circuit and the second charging circuit therein to the low-resistance shunt module; The first charging circuit is a circuit between the first indicator hole or the second indicator hole or the third indicator hole and the ground phase voltage of the equipment; the second charging circuit is a circuit of the input loop line voltage between the first indicator hole and the second indicator hole, between the second indicator hole and the third indicator hole, and between the third indicator hole and the first indicator hole.

2. The device according to claim 1, characterized in that The first charging circuit includes a diode D1 and a voltage-stabilizing diode ZD1 connected to the first indicator hole, the other end of the diode D1 is respectively connected to the capacitor C1 and the diode D2, the other end of the voltage-stabilizing diode ZD1 is respectively connected to the other end of the capacitor C1, the capacitor C2, the capacitor C3, the capacitor C4 and the capacitor C5, the other end of the diode D2 is respectively connected to the other end of the capacitor C2 and the diode D3, the other end of the diode D3 is respectively connected to the other end of the capacitor C3 and the diode D4, the other end of the diode D4 is respectively connected to the other end of the capacitor C4 The other end of the diode D5 is connected to the other end of the capacitor C5 and the diode D5 respectively, the other end of the diode D5 is connected to the resistor R1 and the resistor R2 respectively, the other end of the resistor R1 is connected to the gate of the field effect tube N-MOS, one end of the voltage regulator diode ZD2 and the diode D6 respectively, the other end of the resistor R2 is connected to the drain of the field effect tube N-MOS, the source of the field effect tube N-MOS is connected to the output end, the other end of the diode D6 is connected to the current output end of the current relay, and the other end of the voltage regulator diode ZD2 is connected to the equipment ground phase.

3. The device according to claim 1, characterized in that The first charging circuit includes a diode D1 and a voltage-stabilizing diode ZD1 connected to the second indicator hole, the other end of the diode D1 is respectively connected to the capacitor C1 and the diode D2, the other end of the voltage-stabilizing diode ZD1 is respectively connected to the other end of the capacitor C1, the capacitor C2, the capacitor C3, the capacitor C4 and the capacitor C5, the other end of the diode D2 is respectively connected to the other end of the capacitor C2 and the diode D3, the other end of the diode D3 is respectively connected to the other end of the capacitor C3 and the diode D4, the other end of the diode D4 is respectively connected to the other end of the capacitor C4 The other end of the diode D5 is connected to the other end of the capacitor C5 and the diode D5 respectively, the other end of the diode D5 is connected to the resistor R1 and the resistor R2 respectively, the other end of the resistor R1 is connected to the gate of the field effect tube N-MOS, one end of the voltage regulator diode ZD2 and the diode D6 respectively, the other end of the resistor R2 is connected to the drain of the field effect tube N-MOS, the source of the field effect tube N-MOS is connected to the output end, the other end of the diode D6 is connected to the current output end of the current relay, and the other end of the voltage regulator diode ZD2 is connected to the equipment ground phase.

4. The device according to claim 1, characterized in that The first charging circuit includes a diode D1 and a voltage-stabilizing diode ZD1 connected to the third indicator hole, the other end of the diode D1 is respectively connected to the capacitor C1 and the diode D2, the other end of the voltage-stabilizing diode ZD1 is respectively connected to the other end of the capacitor C1, the capacitor C2, the capacitor C3, the capacitor C4 and the capacitor C5, the other end of the diode D2 is respectively connected to the other end of the capacitor C2 and the diode D3, the other end of the diode D3 is respectively connected to the other end of the capacitor C3 and the diode D4, the other end of the diode D4 is respectively connected to the other end of the capacitor C4 The other end of the diode D5 is connected to the other end of the capacitor C5 and the diode D5 respectively, the other end of the diode D5 is connected to the resistor R1 and the resistor R2 respectively, the other end of the resistor R1 is connected to the gate of the field effect tube N-MOS, one end of the voltage regulator diode ZD2 and the diode D6 respectively, the other end of the resistor R2 is connected to the drain of the field effect tube N-MOS, the source of the field effect tube N-MOS is connected to the output end, the other end of the diode D6 is connected to the current output end of the current relay, and the other end of the voltage regulator diode ZD2 is connected to the equipment ground phase.

5. The device according to claim 1, characterized in that The second charging circuit includes a diode D1 connected to the first indicator hole, a diode D2 connected to the second indicator hole, and a diode D3 connected to the third indicator hole. The diode D1, the diode D2, and the diode D3 are respectively connected to the capacitor C1, the resistor R1, and the resistor R2.

6. The device according to claim 5, characterized in that The second charging loop also includes that the other end of the resistor R1 is respectively connected to the gate of the field effect transistor N-MOS, the voltage regulator diode ZD1 and the diode D4.

7. The device according to claim 6, characterized in that The second charging loop also includes: the other end of the resistor R2 is connected to the drain of the field effect transistor N-MOS, and the source of the field effect transistor N-MOS is connected to the battery of the signal acquisition device.

8. The device according to claim 7, characterized in that The second charging circuit also includes that the other end of the capacitor C1, the other end of the voltage-stabilizing diode ZD1 and the battery of the signal acquisition device are connected to the device ground phase respectively.

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