CN210639226U - Fault diagnosis, measurement and control integrated device - Google Patents
Fault diagnosis, measurement and control integrated device Download PDFInfo
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- CN210639226U CN210639226U CN201821925352.8U CN201821925352U CN210639226U CN 210639226 U CN210639226 U CN 210639226U CN 201821925352 U CN201821925352 U CN 201821925352U CN 210639226 U CN210639226 U CN 210639226U
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Abstract
The utility model provides a failure diagnosis observes and controls and synthesizes integrated device, wherein: the touch display screen is embedded in the front face of the case, the plug-in type board cards with the locking function are adopted in the back face of the case, the main control board, the voltage acquisition board, the current acquisition board, the digital output board, the digital input board, the communication board and the power supply board are all plugged into the case from the back face of the case in the form of board cards, all the board cards adopt the universal modular design, and one or more of the board cards are selected and matched according to the actual monitoring requirements. The utility model discloses can unify the control management to the local intelligent transformation and the safety and stability operation problem of conventional transformer substation.
Description
Technical Field
The utility model relates to a transformer substation's fault diagnosis technique specifically relates to a fault diagnosis observes and controls and synthesizes integrated device.
Background
After years of development, a batch of stable and reliable traditional substations have been built in power grids. However, with the rapid development of the power grid, the requirements for reliability, safety, power quality and the like in the aspect of the transformer substation are increasing day by day, and the traditional comprehensive automatic transformer substation can not meet the development requirements of the power grid gradually.
In the conventional transformer substation which widely exists at present, as primary equipment, mutual inductors and other process layer equipment are non-electronic and have no intelligent components, full digitalization is completely realized until the transformation of an intelligent transformer substation, and the related range and difficulty are large.
In addition, with the continuous increase of new energy access modes, the distributed power generation technology is rapidly developed. However, the increasing penetration of distributed power sources also presents new challenges for scheduling, safe operation, protection, and system stability control of power systems. The system stability problem is increasingly prominent, and the power system safety problem is more important. An integrated monitoring and control technology and a substation automation technology are required to realize the stability monitoring and control of the system. Once the system has the problems of safe and stable operation, long-time and large-range power failure can be caused, so that the safety and stability monitoring control of the region needs to be continuously researched, and the development of the power industry is promoted.
SUMMERY OF THE UTILITY MODEL
To the defect among the prior art, the utility model aims at providing a failure diagnosis observes and controls synthesizes integrated device carries out unified control management to the local intelligent transformation of conventional transformer substation and the safety and stability operation problem.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a fault diagnosis, measurement and control integrated device comprises a case, a main control board, a power panel and a touch display screen, and further comprises a voltage acquisition board, a current acquisition board, a digital output board, a digital input board and a communication board; the front surface of the case is embedded with the touch display screen, and the back surface of the case adopts a plug-in board card with a locking function; the main control board, the voltage acquisition board, the current acquisition board, the digital output board, the digital input board, the communication board and the power supply board are all inserted into the case from the back of the case in the form of board cards, and each board card adopts a universal modular design and is selected and matched with one or more of the board cards according to actual monitoring requirements; wherein:
the input end of the voltage acquisition board is connected with a high-voltage transformer of the power grid, and the output end of the voltage acquisition board is connected with the main control board; the voltage acquisition board acquires alternating voltage signals required by power grid monitoring, converts the acquired alternating voltage signals into digital signals and transmits the digital signals to the main control board;
the input end of the current acquisition board is connected with a high-voltage current transformer of the power grid, and the output end of the current acquisition board is connected with the main control board; the current acquisition board acquires alternating current signals required by power grid monitoring, converts the acquired alternating current signals into digital signals and transmits the digital signals to the main control board;
the digital output board is connected with the main control board and is used for directly outputting digital control signals required by power grid monitoring of the main control board after being electrically isolated;
the digital input board is connected with the monitored power grid equipment and the main control board, and is used for acquiring digital state signals required by power grid monitoring and transmitting the digital state signals to the main control board after electrical isolation;
the communication board is connected with the main control board to realize the communication between the device and the superior monitoring equipment of the power grid, and communication data are transmitted to the main control board through the communication board;
the power panel provides a working power supply for the whole device, and after the power panel is electrically isolated and reduced in voltage, the power supply is directly connected to the main control panel, the voltage acquisition panel, the current acquisition panel, the digital output panel, the digital input panel, the communication panel and the touch display screen;
the touch display screen is connected with the main control board and used for displaying information required by power grid monitoring, and an LED indicator lamp is integrated with the touch display screen;
the main control board is the core of the whole device, is connected with the voltage acquisition board, the current acquisition board, the digital output board, the digital input board, the communication board and the touch display screen, and receives voltage and current data transmitted by the voltage acquisition board and the current acquisition board; receiving an input signal transmitted by the digital input board; sending a control signal to the digital output board; carrying out communication data interaction with the communication board; and sending display content to the touch display screen.
The utility model discloses foretell each integrated circuit board adopts general modular design, can be according to actual monitoring needs, one or more integrated circuit boards wherein of apolegamy, can furthest satisfy the on-the-spot monitoring requirement.
The utility model discloses further set up to, the voltage acquisition board the current acquisition board, its with the interface of main control board is identical, according to the required voltage of control and the corresponding voltage acquisition board of quantity apolegamy or the current acquisition board of electric current, all can carry out nimble apolegamy according to the control needs.
The utility model discloses further set up to, digital output board digital input board, its with the interface of main control board is identical, according to the required quantity match corresponding digital output board or digital input board of opening and opening of control, all can carry out nimble match according to the control needs.
The utility model discloses further set up to, the voltage acquisition board reaches the board is gathered to the electric current, adopts 16 difference ADC chips. Furthermore, the ADC chip is connected with the FPGA controller in the main control board, and the sampling time sequence generated by the FPGA controller in the main control board controls the synchronous sampling of all the voltages and the currents. The current acquisition board also adopts a 5P10 wave recording special current transformer for reliably acquiring transient current signals during short circuit faults.
The utility model discloses further set up to, the main control board is including ARM and DSP dual core processor that is used for data processing, the FPGA controller that is used for the control chronogenesis and be used for the memory of storage data, ARM and DSP dual core processor the FPGA controller the memory all with voltage acquisition board the electric current acquisition board digital output board digital input board the communication board is connected.
The utility model discloses further set up to, the communication board is following any kind of communication board:
a communication board supporting RS232 and RS485 serial communication;
communication boards supporting network communication, such as a conventional RJ45 interface, also support multimode fiber interfaces. Both RJ45 interfaces and fiber optic interfaces may form a ring network.
The utility model discloses further set up to, digital input board includes full-bridge rectifier circuit, photoelectric isolation circuit, pulse and goes tremble circuit, wherein:
the input end of the full-bridge rectifying circuit is connected to an input signal output node of a power grid, and the output end of the full-bridge rectifying circuit is connected to the photoelectric isolation circuit; the full-bridge rectifying circuit enables the digital open-circuit board to support open-circuit signals of various voltage levels and direct current or alternating current open-circuit signals; for direct current signals, a common anode or common cathode open signal can be supported;
the input end of the photoelectric isolation circuit is connected with the full-bridge rectifying circuit, and the output end of the photoelectric isolation circuit is connected with the pulse jitter removing circuit; the photoelectric isolation circuit enables the digital access board to electrically isolate an external access signal from an internal circuit, so that external interference is prevented from entering the device;
the input end of the pulse debouncing circuit is connected with the photoelectric isolation circuit, and the output end of the pulse debouncing circuit is connected with the main control panel; the pulse jitter removing circuit is used for removing interference pulses in external open signals and preventing open signals from being acquired by mistake due to interference.
The utility model discloses above-mentioned fault diagnosis observes and controls synthesizes integrated device can independently install in each transformer substation monitoring point, realizes the real time monitoring on the spot to the each point, adopts the distributing type to constitute. Meanwhile, a DSP and ARM dual-core processor is used as a core of data processing, an FPGA is used as a control time sequence core, a high-precision 16-bit differential ADC acquisition device and high-speed data processing are utilized, information such as current, voltage, power and electric quantity on site can be obtained in real time, common power quality problems such as harmonic waves, voltage fluctuation, flicker, power and three-phase imbalance can be monitored in real time, and reliable support is provided for transformer substation safety monitoring.
Compared with the prior art, the utility model discloses following beneficial effect has:
the utility model relates to an adopt integration, modularization hardware, reasonable in design, practicality, reliable and stable nature are high, and the on-the-spot control requirement of laminating can require the adjusting device configuration according to on-the-spot concrete monitoring, and the complete machine operation is reliable and stable, and each system display is accurate, and the monitoring is comprehensive, accords with the requirement of on-line monitoring, provides powerful and reliable guarantee in the aspect of the accuracy that detects the distribution network fault diagnosis.
The utility model discloses simple structure safety and stability, at on-the-spot monitoring unit equipment mutual independence, a functional fault can not influence other function operation, and the redundant fault-tolerant ability of system is fully considered to the system, possesses perfect lightning protection and anti-electromagnetic field interference and the ability of static influence.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
fig. 1 is an external view of an apparatus according to an embodiment of the present invention;
fig. 2 is a schematic diagram of the distribution positions of the chassis and the board cards of the device according to an embodiment of the present invention;
fig. 3 is a schematic diagram of the board connection of the device according to an embodiment of the present invention;
fig. 4 is a working schematic diagram of a main control board and a board card of the device in an embodiment of the present invention;
fig. 5 is a structural diagram of a voltage collecting board of the device according to an embodiment of the present invention;
fig. 6 is a structural diagram of a main control board of the device according to an embodiment of the present invention;
fig. 7 is a diagram of a touch display screen structure of an apparatus according to an embodiment of the present invention.
In the figure: the device comprises a case 1, a voltage acquisition board 2, a current acquisition board 3, a digital input board 4, a digital output board 5, a main control board 6, a communication board 7, a power supply board 8, a plug-in component 9, a touch display screen 10, a plug-in and locking buckle 11, a voltage input terminal 12, a voltage transformer 13, an ARM and DSP dual-core processor 14, an FPGA controller 15, a memory 16, connecting sockets 17 and 18 and an LED indicator lamp 19.
Detailed Description
The present invention will be described in detail with reference to the following embodiments. The following examples will assist those skilled in the art in further understanding the present invention, but are not intended to limit the invention in any way. It should be noted that various changes and modifications can be made by one skilled in the art without departing from the spirit of the invention. These all belong to the protection scope of the present invention.
As shown in fig. 1-4, for the utility model discloses an embodiment's exterior view, integrated circuit board configuration diagram, integrated circuit board relational graph are observed and controled to failure diagnosis, include in the drawing: the device comprises a case 1, wherein a voltage acquisition board 2, a current acquisition board 3, a digital input board 4, a digital output board 5, a main control board 6, a communication board 7 and a power supply board 8 are arranged in the case 1. A plug-in component 9 for locking is arranged outside the case 1. The voltage acquisition board 2, the current acquisition board 3, the digital input board 4, the digital output board 5, the communication board 7 and the power supply board 8 are all connected to the main control board 6 inside the case 1. The input end of the voltage acquisition board 2 is connected with a high-voltage transformer of the power grid, and the output end of the voltage acquisition board is connected with the main control board 6; the input end of the current acquisition board 3 is connected with a high-voltage current transformer of the power grid, and the output end of the current acquisition board is connected with the main control board 6; the digital output board 5 is connected with the main control board 6; the digital input board 4 is connected with the monitored power grid equipment and the main control board 6; the touch display screen 10 is connected with the main control board 6; the main control board 6 is the core of the whole device and is connected with the voltage acquisition board 2, the current acquisition board 3, the digital output board 5, the digital input board 4, the communication board 7 and the touch display screen 10; the power panel 8 provides working power for the whole device.
The voltage acquisition board 2 is used for acquiring alternating voltage signals required by power grid monitoring, the alternating voltage signals come from a high-voltage transformer of the power grid, the acquired alternating voltage signals are analog signals, and the analog signals are converted into digital signals by the voltage acquisition board 2 and then directly transmitted to the main control board 6; the current acquisition board 3 is used for acquiring alternating current signals required by power grid monitoring, the alternating current signals come from a high-voltage current transformer of the power grid, the acquired alternating current signals are analog signals, and the analog signals are converted into digital signals by the current acquisition board 3 and then directly transmitted to the main control board 6; the digital output board 5 is used for outputting digital control signals required by power grid monitoring, the control signals directly come from the main control board and are directly output after being electrically isolated by the digital output board 5; the digital input board 4 is used for acquiring digital state signals required by power grid monitoring, the state signals come from monitored power grid equipment and are directly transmitted to the main control board 6 after being electrically isolated by the digital input board; the communication board 7 realizes the communication between the device and the superior monitoring equipment of the power grid, and the communication data is directly transmitted to the main control board 6 through communication 7; the power panel 8 provides a working power supply for the whole device, and after the power panel 8 is electrically isolated and reduced in voltage, the power supply is directly connected to the main control panel 6, the voltage acquisition panel 2, the current acquisition panel 3, the digital output panel 5, the digital input panel 4, the communication panel 7 and the touch display screen 10; the touch display screen 10 is used for displaying information required by power grid monitoring, displayed data directly come from the main control board 6, and the touch display screen 10 integrates the LED indicator lamp 19, so that the running state of the device can be visually displayed when the touch display screen 10 is in an energy-saving screen time-keeping state.
As the utility model discloses the core unit of device, main control board 6 is including ARM and DSP dual core processor 14 that is used for data processing, the memory 16 that is used for controlling chronogenesis's FPGA controller 15 and is used for the storage data, ARM and DSP dual core processor 14, FPGA controller 15, memory 16 all with voltage acquisition board 2, current acquisition board 3, digital input board 4, digital output board 5, communication board 7 and power strip 8 are connected. The FPGA controller 15 completes all control time sequences including a voltage and current sampling time sequence, a digital input and output time sequence and a communication time sequence; meanwhile, the memory 16 adopts a large-capacity memory and a TF card for assisting the processing of all data and storing data. Based on the processing of the collected data by the ARM and DSP dual-core processor 14, the main control board 6 may implement functions including, but not limited to: monitoring real-time data including branch current, voltage, power flow direction, power quality and equipment running state; fault recording, power angle detection, system stability monitoring and grading unloading functions; early warning of data abnormality and faults of equipment in the station; and power grid electrical parameter abnormity detection reminding and the like.
As shown in fig. 1, in a specific embodiment, the case 1 adopts a case conforming to the specification of GB/T19520.12, and an integral panel, the touch display screen 10 is embedded in the front of the case 1, and the plug-in board card with a locking function is used on the back of the case 1, and the whole is an embedded integral structure, and the rear wiring mode is the same in size as the same type of board card. Each board is inserted into the chassis 1 from the back of the chassis 1.
As shown in fig. 2, 3 and 4, the following plates are arranged in the case: a voltage acquisition board 2(PT board), a current acquisition board 3 (CT board), a digital input board 4(DI board), a digital output board 5(DO board), a main control board 6(CPU board), a communication board 7(COM board), a POWER board 8(POWER board), and the like. These integrated circuit boards adopt general modular design, can select the assembly according to the demand of actual monitoring, all can set up on every integrated circuit board and help drawing out and locking the knot, with the cooperation of plug-in subassembly 9 that is used for locking, make things convenient for the integrated circuit board to insert from quick-witted case 1 and extract.
In a specific embodiment, the voltage acquisition board 2 and the current acquisition board 3 adopt 16-bit differential ADC chips, and are combined with FPGA time sequence control to realize high-speed and synchronous acquisition of current and voltage quantities. The sampling rate is as high as 12.8kB/s, and all signals are fully synchronously acquired, so that real input signals are completely restored. A 10Mbps optical fiber communication interface is adopted to upload all-digital voltage and current signals in real time, so that the data interference resistance is effectively improved, and the photoelectric isolation of sampled data is realized; the current acquisition part of the current acquisition board 3 adopts a high-performance CT special for 5P10 wave recording, and reliably acquires transient current signals during short-circuit faults.
In a particular embodiment, the digital input board 4 may comprise a full bridge rectifier circuit, a photo-isolation circuit, a pulse debounce circuit, wherein: the input end of the full-bridge rectifier circuit is connected to an open signal output node of a power grid, the output end of the full-bridge rectifier circuit is connected to the photoelectric isolation circuit, the full-bridge rectifier circuit enables the digital open panel to support open signals of various voltage levels, direct current or alternating current open signals and common anode or common cathode open signals for the direct current signals; the input end of the photoelectric isolation circuit is connected with the full-bridge rectifying circuit, the output end of the photoelectric isolation circuit is connected with the pulse jitter removal circuit, and the photoelectric isolation circuit enables the digital access board to electrically isolate an external access signal from an internal circuit so as to prevent external interference from entering the device; the input end of the pulse debounce circuit is connected with the photoelectric isolation circuit, and the output end of the pulse debounce circuit is connected with the main control panel; the pulse jitter removing circuit is used for removing interference pulses in external open signals and preventing open signals from being acquired by mistake due to interference. The full-bridge rectification circuit, the photoelectric isolation circuit and the pulse debouncing circuit in the embodiment can be realized by adopting the existing mature circuit.
As shown in FIG. 5, the voltage acquisition board 2 adopts a 180V/7.07V voltage transformer 13. The width of the rear back plate is 11TE 5.08 ═ 55.88mm, 16 voltage transformers can be placed, the rear back plate is connected with the main control board 6 and adopts a 3 TE 16 ═ 48P ohm connecting socket 17, the external voltage input terminal 12 adopts 3 6-bit Phoenix green terminals, the rated current is 12A, the rated voltage is 320V, the digit is 6, and the distance is 5.08 mm; and a pulling-out assisting and locking buckle 11 is arranged on one side of the voltage acquisition board 2, so that the board can be conveniently inserted and pulled out.
The current collecting plate 3 adopts a voltage type current transformer of 100A/7.07V. The backplane width 11TE 5.08-55.88 mm. 16 current transformers can be placed, a socket with the size of 3 x 16-48P ohms is connected with the main control board 6, and a 12-pin terminal is adopted as an external terminal.
The digital input board 4 has a backplane width 5TE, is connected to the main control board 6 by 2 × 16-32P oht, and has 2 green terminals with 16P pins as external terminals, with a pin pitch of 5.08 mm. There are two indicator lights on the board: run (green), fault (red).
The width of the backboard 5TE of the digital output board 5 is 2X 16-32P ohm inserted in connection with the main control board 6, the external connecting terminals adopt 2 green connecting terminals of 14P pins, and the pin pitch is 5.08 mm. There are two indicator lights on the board: run (green), fault (red).
As shown in fig. 6, the width 9TE × 5.08 of the back plate of the main control board 6 is 45.72mm, and is connected to other board cards through 1 96P and 1 128P ohm connection socket 18, and the edge of the main control board 6 is provided with the pull-up and locking buckle 11. The ARM and DSP dual-core processor 14 and the FPGA controller 15 are arranged close to each other, and a memory 16 is also arranged at the same time. The memory 16 is used for storing the collected data and the result of the main control board 6, and comprises: the recording grounding device records relevant signals such as current, voltage and switching value of the whole grounding process, is convenient for analyzing and processing accidents in the later period, is used for recording and storing various voltage and current signals when the electric energy quality such as voltage, frequency and harmonic wave is abnormal, is convenient for searching the reason of the abnormal electric energy quality, and can lead out the abnormal electric energy waveform into a standard Comtrade format so as to be checked on a third-party device. The memory 16 stores content that is primarily comprised of two parts: one is a historical data part, and a user accumulates a large amount of historical data; one is a redundant part of the database for storing a small amount of real-time data, thereby achieving the purposes of efficiently acquiring the real-time data and providing historical data analysis or query.
The communication board 7, backplate width 7TE 5.08 equals 35.56mm, and is connected with the main control board and adopts 1 96P European Union.
The width of the power supply board 8, back board 9TE × 5.08 ═ 45.72mm, and 1 48P european sockets are used for connecting with other board cards.
As shown in fig. 7, in a specific embodiment, the touch display screen 10 is installed on the front panel of the chassis 1 in an embedded installation manner, the touch display screen 10 obtains display data from the main control board 6, and can display main electrical parameters such as three-phase voltage, current, active/passive power, power factor, and the like, and the content such as the operation state, for example, the voltage, current, power, and electric quantity of each power supply point in real time, and can display the waveform of each voltage and current signal in real time. In one embodiment, the touch display screen adopts an 8-inch full-touch display screen, so that man-machine interaction operation, power data storage and viewing, system parameter configuration and power grid state real-time display are realized. The system can display information such as voltage, current, power, electric quantity, harmonic wave and the like in real time and has functions of data exchange with a substation SCADA system and the like.
The device adopts distributed type composition, general modular design and an integrated structure, wherein each board card can be selected and matched according to monitoring requirements, the whole composition mode is flexible and reliable, the expansibility is strong, and the device is suitable for monitoring electric energy of power grids in various scales, and the main technical characteristics are as follows:
1. an ARM + DSP dual-core main control board is adopted, so that the calculation speed is high, and the data processing capacity is strong; a high-precision 16-bit AD chip is adopted, FPGA control is utilized, and the sampling rate is up to 12.8 kB/s; the method can realize complete synchronization of all alternating current sampling and semaphore acquisition, and ensure the trueness and reliability of waveform recording;
2. the single device can be provided with 48 alternating current samples, phase voltage, zero sequence voltage and 36 current signals of 3 sections of buses can be monitored simultaneously, and the current signals can be configured to be phase current or zero sequence current; the single device can be provided with 60-path open-in and 40-path open-out, and both the open-out and the open-in can be flexibly configured; the alternating current signal can be flexibly matched with phase voltage, phase current, zero sequence voltage and zero sequence current, and one set of device solves the problems of whole station grounding line selection, electric energy quality analysis, fault recording and the like;
3. by setting protection monitoring, the device has the action modes of tripping, wheel cutting, post acceleration and the like, so that a fault line can be quickly and accurately cut, and further expansion of accidents is prevented; the current, voltage, switching value and other related signals in the whole grounding process can be recorded, and the accident can be conveniently analyzed and processed in the later period; the device can record the voltage and current signals when the electric energy quality such as voltage, frequency, harmonic wave and the like is abnormal, and is convenient for searching the reason of the abnormal electric energy quality.
4. The time synchronization modes such as IRIGB, SNTP and communication rule are supported, and the time of the device is ensured to be consistent with that of the system; and various monitoring modes such as local monitoring, WEB monitoring, SCADA communication monitoring and the like are supported.
The embodiment of the utility model provides a through the mutual operation of above-mentioned human-computer, combine specific FPGA, DSP and ARM to be the integrated hardware of core, reasonable in design, practicality, reliable and stable nature are high, and laminating field control requires, and the complete machine operation is reliable and stable, and each system display is accurate, and the monitoring is comprehensive, and human-computer interface science is understandable, and the graphic curve is clear, accords with the requirement of online monitoring, provides powerful and reliable guarantee in the aspect of the accuracy that detects distribution network failure diagnosis.
The foregoing description of the specific embodiments of the invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes and modifications may be made by those skilled in the art within the scope of the appended claims without departing from the spirit of the invention.
Claims (10)
1. A fault diagnosis, measurement and control integrated device comprises a case, a main control board, a power panel and a touch display screen, and is characterized by further comprising a voltage acquisition board, a current acquisition board, a digital output board, a digital input board and a communication board; the touch display screen is embedded in the front face of the case, plug-in board cards with a locking function are adopted in the back face of the case, the main control board, the voltage acquisition board, the current acquisition board, the digital output board, the digital input board, the communication board and the power supply board are all inserted into the case from the back face of the case in the form of board cards, and all the board cards adopt a universal modular design and are matched with one or more board cards according to actual monitoring requirements; wherein:
the input end of the voltage acquisition board is connected with a high-voltage transformer of the power grid, and the output end of the voltage acquisition board is connected with the main control board; the voltage acquisition board acquires alternating voltage signals required by power grid monitoring, converts the acquired alternating voltage signals into digital signals and transmits the digital signals to the main control board;
the input end of the current acquisition board is connected with a high-voltage current transformer of the power grid, and the output end of the current acquisition board is connected with the main control board; the current acquisition board acquires alternating current signals required by power grid monitoring, converts the acquired alternating current signals into digital signals and transmits the digital signals to the main control board;
the digital output board is connected with the main control board and is used for directly outputting digital control signals required by power grid monitoring of the main control board after being electrically isolated;
the digital input board is connected with the monitored power grid equipment and the main control board, and is used for acquiring digital state signals required by power grid monitoring and transmitting the digital state signals to the main control board after electrical isolation;
the communication board is connected with the main control board to realize the communication between the device and the superior monitoring equipment of the power grid, and communication data are transmitted to the main control board through the communication board;
the power panel provides a working power supply for the whole device, and after the power panel is electrically isolated and reduced in voltage, the power supply is directly connected to the main control panel, the voltage acquisition panel, the current acquisition panel, the digital output panel, the digital input panel, the communication panel and the touch display screen;
the touch display screen is connected with the main control board and used for displaying information required by power grid monitoring, and an LED indicator lamp is integrated with the touch display screen;
the main control board is the core of the whole device, is connected with the voltage acquisition board, the current acquisition board, the digital output board, the digital input board, the communication board and the touch display screen, and receives voltage and current data transmitted by the voltage acquisition board and the current acquisition board; receiving an input signal transmitted by the digital input board; sending a control signal to the digital output board; carrying out communication data interaction with the communication board; and sending display content to the touch display screen.
2. The integrated device of claim 1, wherein the voltage acquisition board and the current acquisition board have the same interface with the main control board, and the voltage acquisition board or the current acquisition board is selected according to the number of voltage and current required for monitoring.
3. The integrated device of claim 1, wherein the digital output board and the digital input board have the same interface with the main control board, and the corresponding digital output board or digital input board is selected according to the number of inputs and outputs required for monitoring.
4. The integrated device of claim 1, wherein the main control board comprises an ARM and DSP dual-core processor for data processing, an FPGA controller for controlling timing, and a memory for storing data, and the ARM and DSP dual-core processor, the FPGA controller, and the memory are connected to the voltage acquisition board, the current acquisition board, the digital output board, the digital input board, and the communication board.
5. The integrated fault diagnosis, measurement and control device according to claim 4, wherein the voltage acquisition board and the current acquisition board are 16-bit differential ADC chips.
6. The integrated fault diagnosis, measurement and control device according to claim 5, wherein the ADC chip is connected to the FPGA controller inside the main control board, and a sampling time sequence generated by the FPGA controller inside the main control board controls synchronous sampling of all voltages and currents.
7. The integrated device for fault diagnosis, measurement and control as claimed in claim 1, wherein the current collecting board employs a current transformer dedicated for 5P10 wave recording for reliably collecting transient current signals during short circuit fault.
8. The integrated fault diagnosis, measurement and control device according to claim 1, wherein the communication board is any one of the following communication boards:
a communication board supporting RS232 and RS485 serial communication;
-a communication board supporting network communication.
9. The integrated fault diagnosis, measurement and control device according to claim 1, wherein the digital input board comprises a full bridge rectifier circuit, a photo isolator circuit, and a pulse debounce circuit, wherein:
the input end of the full-bridge rectifying circuit is connected to an input signal output node of a power grid, and the output end of the full-bridge rectifying circuit is connected to the photoelectric isolation circuit; the full-bridge rectifying circuit enables the digital open-circuit board to support open-circuit signals of various voltage levels and direct current or alternating current open-circuit signals;
the input end of the photoelectric isolation circuit is connected with the full-bridge rectifying circuit, and the output end of the photoelectric isolation circuit is connected with the pulse jitter removing circuit; the photoelectric isolation circuit enables the digital open-circuit board to electrically isolate an external open-circuit signal from an internal circuit;
the input end of the pulse debouncing circuit is connected with the photoelectric isolation circuit, and the output end of the pulse debouncing circuit is connected with the main control panel; the pulse de-jitter circuit is used for removing interference pulses in an external input signal.
10. The integrated fault diagnosis, measurement and control device according to any one of claims 1 to 9, wherein the device is independently installed at each substation monitoring point, realizes on-site real-time monitoring of each point, and is formed in a distributed manner.
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| CN201821925352.8U CN210639226U (en) | 2018-11-20 | 2018-11-20 | Fault diagnosis, measurement and control integrated device |
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| CN201821925352.8U CN210639226U (en) | 2018-11-20 | 2018-11-20 | Fault diagnosis, measurement and control integrated device |
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| CN (1) | CN210639226U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114527700A (en) * | 2022-02-25 | 2022-05-24 | 国网山东省电力公司威海供电公司 | State real-time monitoring device of intelligent substation measurement and control unit |
| CN114825595A (en) * | 2022-06-08 | 2022-07-29 | 河南黄河旋风股份有限公司 | Power grid shaking prevention device of diamond top press and control method |
-
2018
- 2018-11-20 CN CN201821925352.8U patent/CN210639226U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114527700A (en) * | 2022-02-25 | 2022-05-24 | 国网山东省电力公司威海供电公司 | State real-time monitoring device of intelligent substation measurement and control unit |
| CN114825595A (en) * | 2022-06-08 | 2022-07-29 | 河南黄河旋风股份有限公司 | Power grid shaking prevention device of diamond top press and control method |
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Effective date of registration: 20230825 Address after: No. 212 Yangbi Road, Dali City, Dali Bai Autonomous Prefecture, Yunnan Province, 671000 Patentee after: DALI POWER SUPPLY BUREAU, YUNNAN POWER GRID Co.,Ltd. Address before: No. 212, Yangbi Road, Xiaguan Town, Dali City, Dali Bai Autonomous Prefecture, Yunnan Province Patentee before: DALI POWER SUPPLY BUREAU, YUNNAN POWER GRID Co.,Ltd. Patentee before: SHANGHAI JUNSHI ELECTRICAL TECHNOLOGY CO.,LTD. |