Collection control device of fault indicator and fault indicator

Abstract

The utility model discloses a collection control device of a fault indicator and the fault indicator. The collection control device comprises a communication module, a power supply module and a main controller, the communication module and the power supply module are both connected with the main controller, and the main controller is used for conducting grounding fault judgment and / or short-circuit fault judgment on an overhead line in an electric power system. The technical problem that the collection control device in the related fault indicator does not have the function of independently judging the overhead line fault is solved.

Description

Technical Field

[0001] The present application relates to the technical field of power systems, and in particular to a centralized control device for fault indicators and a fault indicator. Background Art

[0002] Currently, fault indicators in power systems are widely installed on 10kV overhead lines to accurately and quickly locate fault areas, thereby reducing power outages caused by time-consuming fault finding, saving labor costs, reducing safety risks, and improving power supply reliability.

[0003] Generally, a fault indicator consists of a data acquisition device, a collection control device, and a fault processing system. However, this type of fault indicator still has the following disadvantages when performing fault judgment: (1) Since the data acquisition device can directly judge short-circuit faults, there is no isolation measure between the acquisition equipment and the power supply circuit in the existing data acquisition device, resulting in poor anti-interference performance of the fault indicator, and frequent false operation or refusal to operate. (2) The judgment of ground faults relies on the collection control device to aggregate the electric field, load current and other information collected by the data acquisition device into a zero-sequence waveform and send it to the fault processing system for fault judgment, and receive the fault judgment results issued by the fault processing system, and further forward them to the acquisition device for local indication. However, the fault processing system relies on the line topology structure to realize ground fault judgment. Since the overhead lines in the power system change frequently, when the line operation mode or line connection changes, once the line topology map is not updated in time, the fault processing system will make a misjudgment, thereby feeding back an incorrect fault judgment result.

[0004] Therefore, there is an urgent need to design a centralized control device with the function of independently performing short-circuit fault and ground fault judgment. Utility Model Content

[0005] The embodiments of the present application provide a fault indicator aggregation control device and a fault indicator to at least solve the technical problem that the aggregation control device in the relevant fault indicator does not have the function of independently determining the fault of the overhead line.

[0006] According to one aspect of an embodiment of the present application, a centralized control device for a fault indicator is provided, comprising: a communication module, a power supply module, and a main controller, wherein the communication module and the power supply module are both connected to the main controller, wherein the main controller is used to perform ground fault detection and / or short circuit fault detection on overhead lines within a power system.

[0007] Optionally, the communication module includes: a near-field RF communication unit and a wireless communication unit, wherein the near-field RF communication unit includes: a near-field RF communication chip connected to the main controller through a level conversion circuit and a near-field communication antenna connected to the near-field RF communication chip; the wireless communication unit includes: a wireless transceiver chip connected to the main controller, a receiving / transmitting circuit connected to the wireless transceiver chip and a wireless communication antenna connected to the receiving / transmitting circuit.

[0008] Optionally, the power supply module includes: a main power supply unit and a backup power supply unit, wherein the main power supply unit includes: a low-voltage difference linear regulator connected to the main controller, a DC / DC converter connected to the low-voltage difference linear regulator, and a solar cell connected to the DC / DC converter; the backup power supply unit includes: a battery charging circuit and a battery discharging circuit connected to the solar cell.

[0009] Optionally, the converged control device further includes a positioning module, wherein the positioning module includes a positioning chip connected to the main controller and a positioning antenna connected to the positioning chip.

[0010] Optionally, the aggregation control device further includes: a storage module, wherein the storage module includes: a memory connected to the main controller, wherein the type of the memory includes at least one of the following: flash memory, random access memory, and electrically erasable programmable read-only memory.

[0011] Optionally, the converged control device further comprises: a clock module, wherein the clock module comprises: an inter-integrated circuit interface connected to the main controller and a real-time clock chip connected to the inter-integrated circuit interface.

[0012] Optionally, the converged control device further includes: a backup battery, wherein the backup battery is connected to the main controller to supply power to the main controller; and / or the backup battery is connected to the real-time clock chip to supply power to the real-time clock chip.

[0013] Optionally, the integrated control device further includes an indication module, wherein the indication module includes an indicator light drive circuit connected to the main controller and an indicator light connected to the indicator light drive circuit.

[0014] Optionally, the converged control device further includes: a temperature measurement circuit, wherein the temperature measurement circuit is connected to the main controller.

[0015] Optionally, the aggregation control device further includes: an isolation module, wherein the isolation module includes: an isolation element connected to an external interface of the aggregation control device, wherein the type of the isolation element includes at least one of the following: an optocoupler, an isolation diode, and an isolation capacitor.

[0016] According to another aspect of an embodiment of the present application, a fault indicator is also provided, including: a data acquisition device and a collection control device, and the data acquisition device is connected to the collection control device, wherein the data acquisition device includes: an acquisition module for collecting power data of overhead lines in the power system, wherein the power data includes at least one of the following: current data, electric field data; the collection control device is a collection control device of any of the above items.

[0017] In the aggregation control device provided in the present application, a main controller with a line fault identification function is arranged in the aggregation control device, so that the aggregation control device of the fault indicator has the function of independently identifying the overhead line fault, thereby solving the technical problem that the aggregation control device in the relevant fault indicator does not have the function of independently identifying the overhead line fault. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0019] Figure 1 is a schematic structural diagram of an optional fault indicator according to an embodiment of the present application;

[0020] Figure 2 is a schematic diagram of the electrical principle of an optional convergence control device according to an embodiment of the present application;

[0021] Figure 3 is a schematic diagram of the electrical principle of another optional convergence control device according to an embodiment of the present application;

[0022] Figure 4 This is a schematic diagram of the appearance of an optional fault indicator aggregation control device according to an embodiment of the present application. DETAILED DESCRIPTION

[0023] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of this application.

[0024] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in a sequence other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0025] In order to better understand the embodiments of the present application, some nouns or terms that appear in the description of the embodiments of the present application are first translated and explained as follows:

[0026] SPI (Serial Peripheral Interface) is a common serial communication protocol used primarily for data transmission between microcontrollers and peripheral devices. The SPI interface offers the following features: full-duplex communication (i.e., it can simultaneously transmit and receive data), master-slave communication (i.e., SPI communication requires a master device and one or more slave devices), and high data transfer rates.

[0027] UART (Universal Asynchronous Receiver / Transmitter) interface: is an asynchronous communication protocol used to transmit data between two devices. It uses a single line for bidirectional communication and uses start bits, stop bits, and parity to ensure data reliability.

[0028] IIC (Inter-Integrated Circuit) interface: A serial computer bus used to connect microcontrollers to various peripheral devices such as sensors, memory, real-time clocks (RTCs), audio devices, and power management. Generally, IIC interfaces allow multiple devices to share the same bus, reducing the number of physical connections required.

[0029] GPIO (General Purpose Input / Output) is a standard IO port provided by a chip on a board or other hardware device. Each GPIO port can be configured as an input or output and can read or write status at a logic high or low level.

[0030] Zero sequence: refers to the phase relationship of current or voltage being independent of each other, without any phase difference, that is, the waveform shape of current or voltage is exactly the same.

[0031] Currently, traditional fault indicators rely on the data acquisition device within them to directly determine short-circuit faults in overhead lines. However, due to the lack of any isolation between the acquisition equipment within the data acquisition device and the power supply circuit, the fault indicator's anti-interference performance is poor, and false operation or refusal to operate often occurs. Furthermore, for ground fault identification, traditional fault indicators rely on a collection control device to aggregate the electric field, load current, and other information collected by the data acquisition device into a zero-sequence waveform, which is then sent to the fault processing system for fault identification. The fault identification results sent by the fault processing system are then forwarded to the acquisition device for on-site indication. However, since the fault processing system relies on the line topology to determine ground faults, and since overhead lines within the power system frequently change, if the line operation mode or line wiring changes and the line topology is not updated in a timely manner, the fault processing system will make a misjudgment.

[0032] In order to solve the above problems, the present invention proposes a fault indicator. Figure 1 1 is a schematic structural diagram of an optional fault indicator according to an embodiment of the present application, wherein the fault indicator 10 includes: a data acquisition device 11 and a collection control device 12, and the data acquisition device 11 is connected to the collection control device 12, wherein:

[0033] The data acquisition device 11 includes a collection module 11 for collecting power data from overhead lines within the power system and transmitting the collected power data to a collection control device 12. The collection module 11 includes, but is not limited to, sensors and collectors, such as current collectors and electric field sensors. Therefore, the collected power data includes at least one of the following: current data and electric field data.

[0034] The electrical principle of the above-mentioned convergence control device 12 is as follows Figure 2 As shown, it includes: a main controller 21, a communication module 22, and a power supply module 23. Both the communication module 22 and the power supply module 23 are connected to the main controller 21. The main controller 21 is used to identify ground faults and / or short circuit faults in corresponding overhead lines within the power system based on the power data from the data acquisition device 11. This allows for independent short circuit and ground fault detection without relying on the fault handling system, meeting the requirement for accurate fault section determination.

[0035] The present application scheme is described in detail below with reference to specific embodiments and drawings.

[0036] Figure 3This is a structural diagram of another more complete fault indicator aggregation control device according to an embodiment of the present application. Figure 3 The specific structure of each module in the centralized control device of the fault indicator is described.

[0037] Optionally, the main controller 21 may be a MCU (Micro Controller Unit), wherein the MCU may be 32 bits or 64 bits, and the selection is made according to the requirements of the actual application scenario.

[0038] Specifically, the main controller 21 may perform short circuit fault identification on the overhead line according to the mutation value method, including:

[0039] First, a current data set of the overhead line collected by the data collection device 11 within a preset collection period is obtained;

[0040] Next, determining whether there is a current greater than a preset first current threshold in the current data set, and if so, determining that the current data greater than the first current threshold is a sudden change current of the overhead line;

[0041] Then, determining a first time period during which the overhead line is in a no-current state after the sudden current change (i.e., the duration during which the overhead line is in a power outage state after the sudden current change), and determining a relationship between the first time period and a preset time threshold;

[0042] When the first time period is greater than a preset time threshold, determining that the overhead line is in a permanent short circuit fault;

[0043] When the first time period is not greater than a preset time threshold, it is determined that the overhead line is in a transient short circuit fault.

[0044] Among them, the above-mentioned first current threshold can be set to 150A, and the above-mentioned preset time threshold can be five minutes. It should be noted that the above-mentioned first current threshold and preset time threshold are only described as examples and can be set according to actual application scenarios. No specific restrictions are made here. After the main controller 21 completes the fault judgment, the short-circuit fault judgment result (permanent short-circuit fault, transient short-circuit fault) can be fed back to the data acquisition device 11, and the data acquisition device 11 will indicate it on the spot.

[0045] Specifically, the main controller 21 can perform ground fault identification on the overhead line according to the transient zero-sequence current amplitude method and the polarity comparison method. The following uses the transient zero-sequence current amplitude method as an example to illustrate the process of ground fault identification on the overhead line, including:

[0046] First, the recorded data obtained by the data acquisition device from recording the electric field and load current data of the overhead line is obtained, and the recorded data is summarized to obtain the transient zero-sequence current waveform;

[0047] Then, determining the current amplitude in the transient zero-sequence current waveform, and judging whether the current amplitude is greater than a preset second current threshold;

[0048] If so, determining a second time period during which the overhead line is in a no-current state after the current amplitude (i.e., the length of time the overhead line is in a power outage state), and determining a magnitude relationship between the second time period and a preset time threshold;

[0049] If the second time period is greater than a preset time threshold, determining that the overhead line is in a permanent ground fault;

[0050] When the second time period is not greater than a preset time threshold, it is determined that the overhead line is in a transient ground fault.

[0051] The second current threshold can be set to 30A, and the preset time threshold can be five minutes. It should be noted that the second current threshold and preset time threshold are provided for illustrative purposes only and can be set based on actual application scenarios. This is not a specific limitation. After the main controller 21 completes fault determination, it can feed back the ground fault determination result (permanent ground fault, transient ground fault) to the data acquisition device 11, which then provides an on-site indication.

[0052] Optionally, the communication module 22 in the converged control device includes: a near-field radio frequency communication unit 221 for communicating with the data acquisition device 11 , and a wireless communication unit 222 for communicating with the fault processing system.

[0053] Specifically, the RF communication unit 221 includes a near-field RF communication chip 2212 connected to the main controller 21 via a level conversion circuit 2211, and a near-field communication antenna 2213 connected to the near-field RF communication chip 2212. The level conversion circuit 2211 ensures normal and stable signal exchange between the data acquisition device of the fault indicator and the aggregation control device.

[0054] Specifically, the wireless communication unit 222 includes: a wireless transceiver chip 2221 connected to the main controller 21 , a receiving / transmitting circuit 2222 connected to the wireless transceiver chip 2221 , and a wireless communication antenna 2223 connected to the receiving / transmitting circuit 2222 .

[0055] Among them, the above-mentioned wireless transceiver chip 2221 and the main controller 21 can transmit data through the SPI protocol, and the wireless transceiver chip 2221 can be a wireless transceiver chip with high performance and low power consumption. The operating frequency range of the SI4438 chip is 425-525MHz, and it supports multiple modulation modes, such as FSK (Frequency Shift Keying), OOK (On-Off Keying), etc. At the same time, it has automatic frequency control (Automatic Frequency Control, AFC) and automatic gain control (Automatic Gain Control, AGC) functions. The receiving circuit connected to the wireless transceiver chip 2221 includes a low-noise amplifier (LNA) and other components of the receiving chain. It can receive and amplify the signal from the antenna. After demodulation, the received signal is output to the MCU via a standard SPI bus to read the 64-byte RX FIFO. The transmitting circuit connected to the SI4438 chip includes a power amplifier (PA) and other components of the transmitting chain. It can adjust and amplify the data sent by the main controller 21 and ultimately transmit it through the antenna. In addition, the wireless communication antenna 2223 connected to the receiving / transmitting circuit 2222 can be selected according to the specific application scenario and design requirements.

[0056] It should be noted that the selection of the wireless communication antenna 2223 generally needs to meet the following conditions: the operating frequency of the antenna should match the frequency range of the wireless transceiver chip; the input impedance of the antenna should match the RF output impedance of the wireless transceiver chip; the polarization mode of the antenna should be consistent with the polarization mode of signal transmission; and the gain of the antenna should meet the signal directionality and coverage range.

[0057] In addition, the embodiments of the present application take into account that the power supply circuit in the existing fault indicator is generally set in the data acquisition device, and adopts battery power supply or uses current transformer to obtain power (also known as CT (Current Transformer) self-powering). However, this power supply method has the following problems: (1) It is impossible to know the operating status of the battery. Only when the data acquisition device cannot collect data can it be known that the battery may be dead; (2) The method of obtaining power by current transformer cannot be implemented when the load on the overhead line is small (current is less than 10A). Therefore, in some optional embodiments of the present application, a power supply module 23 is set in the aggregation control device, including: a main power supply unit 231 for supplying power to each electronic device in the aggregation control device, a backup power supply unit 232, a low voltage difference linear regulator 233 and a DC / DC converter 234.

[0058] Specifically, the solar cell 2313 in the main power supply unit 231 can be directly connected to the DC / DC converter 234, and the DC / DC converter 234 is connected to the low-voltage dropout linear regulator 233, and the low-voltage dropout linear regulator 233 is connected to the main controller 21 to supply power to the main controller 21. The solar cell 2313 (1-n) is composed of a plurality of solar cells, which can convert sunlight energy into DC power, and the voltage and current output by the solar cell 2313 will vary with the light intensity and environmental conditions. The main power supply unit 231 can directly convert the DC power through the DC / DC converter 234 and then regulate it through the low-voltage dropout linear regulator 233 to directly supply the voltage required by the main controller 21 and other electronic devices in the control device.

[0059] Alternatively, the solar cells 2313 (1 to n) in the main power supply unit 231 can be connected to the battery charging circuit 2321 in the backup power supply unit 232 for charging, and then the battery charging circuit 2321 is connected to the battery discharging circuit 2322 for discharging; and the battery discharging circuit 2322 is connected to the DC / DC converter 234 to convert the discharge information and then adjust it through the low voltage difference linear regulator 233 to directly provide the voltage required by the main controller 21 and other electronic equipment in the control device.

[0060] The low voltage dropout linear regulator 2311 can provide accurate and stable voltage data to the main controller 21 via the UART protocol.

[0061] It should be noted that the battery charging circuit 2321 continuously converts the light energy collected by the solar cell into electrical energy through a constant voltage and constant current method, while the battery discharging circuit 2322 controls charging and discharging through hysteresis. When the battery voltage or current exceeds a set threshold, the hysteresis control logic is activated. This control logic generally includes two hysteresis rise and hysteresis fall periods. When the battery voltage or current exceeds the charge cutoff value, the control logic delays for a period of time (hysteresis time) before initiating protective measures, such as reducing the charge current or stopping charging, thereby avoiding frequent charge and discharge switching caused by instantaneous voltage fluctuations and reducing damage to the battery. When the battery voltage or current exceeds the discharge cutoff value, the control logic also delays for a period of time (hysteresis time) before initiating protective measures, such as limiting the discharge current or stopping discharge, thereby preventing the battery from over-discharging when the battery is low in power, thereby extending the battery life.

[0062] Optionally, the convergence control device in the embodiment of the present application further includes a positioning module 24 for real-time positioning of the convergence control device, wherein the positioning module 24 includes a positioning chip 241 connected to the main controller and a positioning antenna 242 connected to the positioning chip 241 .

[0063] Specifically, the positioning chip 241 can interact with the main controller 21 via the UART protocol, and the positioning chip 241 can include a GNSS (Global Navigation Satellite System) module for positioning by satellite systems (Global Positioning System GPS, GLONASS Satellite Navigation System GOLNASS, BeiDou Satellite Navigation System BDS, and Four-Dimensional Space Satellite System QZSS). The positioning antenna 241 needs to be compatible with the satellite system, such as a GPS antenna.

[0064] Optionally, the aggregation control device in the embodiment of the present application also includes: a storage module 25, wherein the storage module 25 includes: a memory 251 (1~m) connected to the main controller, wherein the above-mentioned memory 251 (1~m) can interact with the main controller through the SPI protocol, and the type of the memory 251 (1~m) includes at least one of the following: flash memory, random access memory, and electrically erasable programmable read-only memory.

[0065] Among them, flash memory (FLASH) is a non-volatile memory that ensures that the data stored in it will not be lost even if the power is off. Random Access Memory (RAM) is a volatile memory that is mainly used to store data and instructions that the main controller needs to access quickly during operation, ensuring that the main controller can process data and execute instructions more efficiently. Electronic Erasable and Programmable Read-Only Memory (ESAM) allows the memory contents to be electronically erased and reprogrammed without removing the chip. It is mainly used to store MCU firmware and boot code, system configuration data, and sensitive information (such as encryption keys, authentication data, etc.).

[0066] Optionally, the converged control device in the embodiment of the present application further includes a clock module 26 for providing a clock signal for the device, enabling the main controller 21 to operate at a specific frequency, thereby achieving timing control and coordination of the various electronic devices in the device. Furthermore, the clock module 26 can also provide an accurate time reference for synchronizing the operation of the various electronic devices, ensuring the stability and reliability of the device. The clock module 26 includes an integrated circuit bus interface 261 connected to the main controller and a real-time clock (RTC) chip 262 connected to the integrated circuit bus interface.

[0067] In addition, the converged control device in the embodiment of the present application further includes a backup battery 27 for supplying power to the main controller 21 and / or the clock module 26 in the event that the power supply module 23 fails to supply power. Therefore, the backup battery 27 is connected to the main controller 21 to supply power to the main controller 21; and / or the backup battery 27 is connected to the real-time clock chip 262 to supply power to the real-time clock chip 262.

[0068] Optionally, the converged control device in the embodiment of the present application further includes an indication module 28, wherein the indication module 28 includes an indicator light driving circuit 281 connected to the main controller 21 and an indicator light 282 connected to the indicator light driving circuit 281. The indicator light driving circuit 281 and the main controller 21 can transmit signals via a GPIO interface, and the indicator light 282 can be an LED light.

[0069] Specifically, indicator light 282 has two different functions: a ground fault indication function and a short circuit fault indication function. When the main controller 21 determines that a ground fault has occurred on an overhead line and the ground fault type is a permanent ground fault, indicator light 282 can illuminate steadily in red. When the main controller 21 determines that a ground fault has occurred on an overhead line and the ground fault type is a transient ground fault, indicator light 282 can flash red. When the main controller 21 determines that a short circuit has occurred on an overhead line and the short circuit type is a permanent short circuit fault, indicator light 282 can illuminate steadily in yellow. When the main controller 21 determines that a short circuit has occurred on an overhead line and the short circuit type is a transient short circuit fault, indicator light 282 can flash yellow.

[0070] Optionally, the converged control device of the present application further includes: a buzzer 29 connected to the main controller 21 , and signals are transmitted between the buzzer 29 and the main controller 21 via a GPIO interface.

[0071] Similar to the atmosphere function of the indicator light 282, the buzzer 29 also plays an atmosphere role in line fault judgment. For example, if there is a permanent fault, the main controller 21 controls the buzzer 29 to beep three times; if there is a transient fault, the main controller 21 controls the buzzer 29 to beep once.

[0072] Optionally, the aggregation control device of the present application also includes: a temperature measuring circuit 30, wherein the temperature measuring circuit 30 is connected to the main controller 21, for monitoring the temperature of the aggregation control device in real time, and feeding back to the main controller 21, so that the main controller 21 can understand whether the various electronic devices in the aggregation control device are operating within the normal temperature range to ensure that the equipment is not damaged or malfunctions.

[0073] Optionally, the aggregation control device of the present application further includes an isolation module 31, wherein the isolation module 31 includes isolation elements 311 (1-k) connected to each external interface of the aggregation control device, thereby providing isolation measures between the aggregation control device and other external interface circuits, effectively improving the accuracy of the fault indicator. The types of the isolation elements 311 include, but are not limited to, optocouplers, isolation diodes, and isolation capacitors.

[0074] Specifically, Figure 3 FIG. 1 is an electrical schematic diagram of another optional integrated control device for fault indicators according to an embodiment of the present application, such as Figure 3 As shown. The converged control device uses a 32-bit R7FA6M5 as the main controller 21; an EC20-CE as the near-field radio frequency communication chip 2212 within the near-field radio frequency communication unit 221, and a 4G antenna as the near-field communication antenna 2213; an SI4438 chip as the wireless transceiver chip 2221 within the wireless communication unit 222, and the wireless communication antenna 2223 connected to the receiving / transmitting circuit 2222 can be a GPS antenna; an L76K module as the positioning chip 241, and the positioning antenna 241 connected to the positioning chip 241 can be a GPS antenna; FLSAH and ESAM as the storage module 25; and an RX8025T as the real-time clock chip 262. This chip has an IIC interface and a temperature step function, and integrates a highly stable 32.768KHz digital temperature compensated crystal oscillator (DTCXO). By setting the corresponding compensation control bits, temperature compensation at different intervals can be achieved, thereby significantly improving the clock accuracy. Therefore, RX8025T can send 32.768KHz crystal signal to the main controller. Figure 3 Since the external interface between the aggregation control device and the external connection is not marked, the isolation element 311 (1~k) is not marked in the figure. However, in actual application, the isolation element 311 (1~k) can be selected from elements such as optocouplers and set between the aggregation control device and the external interface connection.

[0075] in addition, Figure 4 FIG. 1 is a schematic diagram of an optional integrated control device for fault indicators according to an embodiment of the present application, as shown in FIG. Figure 4 As shown, the inclined surface with a certain slope to the ground is the solar cell 2313 (1-n), and the rectangular box placed vertically to the ground includes other electronic devices in the collection control device except the solar cell.

[0076] In the converged control device provided in this application, the line fault identification function is built into the converged control device, and isolation measures are added to the external interface circuit. This effectively improves the anti-interference performance of the fault indicator and ensures the accuracy of the fault indicator's indication. This solves the technical problem that the converged control device in related fault indicators lacks the ability to independently identify overhead line faults.

[0077] In the above embodiments of the present application, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, please refer to the relevant description of other embodiments.

[0078] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. Among them, the device embodiments described above are only exemplary. For example, the division of units can be a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of units or modules, which can be electrical or other forms.

[0079] Units described as separate components may or may not be physically separate, and components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple units. Some or all of the units may be selected to achieve the purpose of the present embodiment according to actual needs.

[0080] In addition, the functional units in the various embodiments of the present application may be integrated into a main controller, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated units may be implemented in the form of hardware or software functional units.

[0081] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the relevant technology, or all or part of the technical solution can be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, server or network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a read-only memory (ROM), a random access memory (RAM), a mobile hard disk, a magnetic disk or an optical disk.

[0082] The above is only a preferred embodiment of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A centralized control device for fault indicators, characterized in that: include: A communication module, a power supply module, and a main controller, wherein the communication module and the power supply module are both connected to the main controller, wherein: The main controller is used to perform ground fault detection and / or short circuit fault detection on overhead lines in the power system; The communication module includes: a near-field radio frequency communication unit and a wireless communication unit, wherein the near-field radio frequency communication unit includes: a near-field radio frequency communication chip connected to the main controller through a level conversion circuit and a near-field communication antenna connected to the near-field radio frequency communication chip; the wireless communication unit includes: a wireless transceiver chip connected to the main controller, a receiving / transmitting circuit connected to the wireless transceiver chip and a wireless communication antenna connected to the receiving / transmitting circuit; The power supply module includes: a main power supply unit, a backup power supply unit, a low-voltage dropout linear regulator and a DC / DC converter, wherein the main power supply unit includes: a solar cell connected to the backup power supply unit and / or the DC / DC converter; the backup power supply unit includes: a battery charging circuit connected to the solar cell and a battery discharging circuit connected to the battery charging circuit, wherein the battery discharging circuit is connected to the DC / DC converter; the DC / DC converter is connected to the low-voltage dropout linear regulator, and the low-voltage dropout linear regulator is connected to the main controller for supplying power to the main controller.

2. The device according to claim 1, characterized in that The device further comprises: a positioning module, wherein: The positioning module includes: a positioning chip connected to the main controller and a positioning antenna connected to the positioning chip.

3. The device according to claim 1, characterized in that The device further includes a storage module, wherein: The storage module includes: a memory connected to the main controller, wherein the type of the memory includes at least one of the following: flash memory, random access memory, and electrically erasable programmable read-only memory.

4. The device according to claim 1, characterized in that The device further includes a clock module, wherein: The clock module includes: an inter-integrated circuit interface connected to the main controller and a real-time clock chip connected to the inter-integrated circuit interface.

5. The device according to claim 1, characterized in that The device further comprises a backup battery, wherein: The backup battery is connected to the main controller to supply power to the main controller; And / or, the backup battery is connected to the real-time clock chip to provide power to the real-time clock chip.

6. The device according to claim 1, characterized in that The device further includes an indication module, wherein: The indication module includes: an indicator light driving circuit connected to the main controller and an indicator light connected to the indicator light driving circuit.

7. The device according to claim 1, characterized in that The device further comprises: a temperature measuring circuit, wherein the temperature measuring circuit is connected to the main controller.

8. The device according to claim 1, characterized in that The device further comprises: an isolation module, wherein: The isolation module includes: an isolation element connected to the external interface of the aggregation control device, wherein the type of the isolation element includes at least one of the following: an optocoupler, an isolation diode, and an isolation capacitor.

9. A fault indicator, characterized in that: include: A data acquisition device and a collection control device, wherein the data acquisition device is connected to the collection control device, The data acquisition device includes: an acquisition module for acquiring power data of overhead lines in a power system, wherein the power data includes at least one of the following: current data, electric field data; The aggregation control device is the aggregation control device of the fault indicator according to any one of claims 1 to 8.

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