CN111405031A - Intelligent acquisition and remote transmission system for power grid fault recording data - Google Patents
Intelligent acquisition and remote transmission system for power grid fault recording data Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/081—Locating faults in cables, transmission lines, or networks according to type of conductors
- G01R31/086—Locating faults in cables, transmission lines, or networks according to type of conductors in power transmission or distribution networks, i.e. with interconnected conductors
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/02—Details
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/16—Implementation or adaptation of Internet protocol [IP], of transmission control protocol [TCP] or of user datagram protocol [UDP]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/18—Multiprotocol handlers, e.g. single devices capable of handling multiple protocols
Abstract
The invention provides a power grid fault recording data intelligent acquisition and remote transmission system, which comprises a plurality of fault recording data acquisition devices and a receiving and analyzing device which are interconnected through a data communication network; each fault recording data acquisition device acquires internal working direct-current voltage by connecting a preset external voltage source or preset external equipment, adaptively presets the baud rate of an external relay protection device during normal operation, acquires fault recording data as binary data, processes the binary data into uniform format data and forwards the uniform format data to a receiving analysis device; the receiving and analyzing device receives the data sent by each fault recording data acquisition device and processes the data into hexadecimal data, and after the fault recording data is further reduced, a recording chart or a data report is formed and is transmitted to a receiving end user. By implementing the method, the limitation of protocol conversion protocol can be eliminated, fault recording data can be intelligently acquired, the system public network transmission is not relied on, the manpower and material resources are maximally reduced, and the working efficiency is improved.
Description
Technical Field
The invention relates to the technical field of relay protection data acquisition, in particular to an intelligent acquisition and remote transmission system for power grid fault recording data.
Background
The fault recording data (including recording chart, basic data and other information data) is formed by automatically and accurately recording the processes before and after the fault through the induction of a wave recorder or a protection device when the power grid system has a fault. Through fault recording data, the fault reason can be analyzed in the electric quantity change process when the system is in fault, anti-accident countermeasures can be researched and timely processed, and the correctness evaluation of relay protection and automatic device action can be researched, so that a reliable basis is provided. Meanwhile, according to fault recording data, various fault points are accurately positioned and quickly eliminated, and the method can play an important role in recovering the operation of the power grid system as soon as possible and improving the safe operation level of the power grid system.
Fault recording data recorded by each power grid company through a recorder or a protection device are printed on site manually, then detailed data are summarized, and finally the fault recording data are reported to related management personnel, so that the time is long, quick power restoration is extremely unfavorable, and a large amount of manpower and material resources are wasted; in addition, the on-site paper printing mode of the fault recording data not only causes higher cost of paper and consumables and can not be electronically filed and transmitted, but also causes large workload of equipment maintenance.
In order to solve the above problems, colleges and universities, scientific research institutions or power supply companies have developed technologies for collecting and remotely transmitting various types of fault recording data, and transmit the fault recording data through a public system network (such as a power data transmission network such as SCADA), but as manufacturers have more equipment types and different communication conversion protocols and protection protocol conversion protocols, real collection is difficult to achieve, and popularization and application are extremely difficult. For example, fault recording data acquisition and remote transmission of a certain power grid company are mainly transmitted to a main station system through a signal protection substation, and waveform data are processed by the signal protection substation device most of the time due to the huge data volume of the fault recorder device, so that certain hidden danger is brought to the stable operation of the signal protection substation device; meanwhile, because the communication stability of fault recording data is restricted by the information protection substation device, once the information protection substation device fails, the fault recording data of the wave recording device cannot be uploaded, and troubles are brought to rapid analysis and elimination of power system faults. For another example, the oscillograph devices lack a uniform industry standard, communication remote transmission protocols and data storage formats are different, wave recording data formats output by equipment of various manufacturers are different, uploading waveforms have certain distortion, and especially, a protection fault oscillograph is not installed in a 110kV or below power grid system transformer substation of each power grid company (for example, under the condition that resources are wasted due to wave recording configured by a 10kV power distribution device, it is quite difficult for a signal protection system to acquire fault wave recording data). For another example, the patent application number is CN109361267A, which is entitled an invention patent of a fault wave recording networking system, and the master station in the invention patent communicates with wave recorders in a transformer substation through a scheduling data network respectively, and the wave recorders are networked separately, and upload wave recorder data to the scheduling master station system of the master station through the scheduling data network in real time, so that workers can know the fault situation quickly, the fault characteristics are prevented from being judged by mistake, and the purpose of quickly handling various faults is achieved. For another example, the patent with the patent authorization number CN209460598U is a utility model of a data acquisition device for messages and various wave recorders. The utility model discloses a patent includes analog quantity collection module, SV/GOOSE collection module, FT3 collection module, MMS collection module etc.. Data is collected and transmitted over a public system network.
However, the above fault recording data remote transmission technologies all need to rely on a system public network, and mostly adopt centralized uploading first, and because of the problems of disordered recording data and large data volume, uploading failure or distortion, potential safety hazards are brought to the public network. Meanwhile, the collection of fault recording data is centralized by using a public fault recorder device or a public network, so that collection protocol conversion is involved, however, the collection of a protection protocol conversion protocol and a protocol conversion protocol of each manufacturer is difficult, so that the technical conditions of the collection process are very high, and the purchase cost of the fault recording device is increased.
Therefore, a fault recording data remote transmission technology is urgently needed, the limitation of protocol conversion protocol can be eliminated, fault recording data can be intelligently acquired, the fault recording data is not transmitted by a system public network, manpower and material resources are maximally reduced, the working efficiency is improved, and a reliable basis is provided for quick power restoration, reliable power supply and reduction of power failure time of users.
Disclosure of Invention
The technical problem to be solved by the embodiments of the present invention is to provide an intelligent acquisition and remote transmission system for grid fault recording data, which can get rid of the limitation of protocol conversion protocol to intelligently acquire fault recording data, and does not depend on the public network of the system to transmit fault recording data, thereby maximally reducing manpower and material resources, improving working efficiency, and providing reliable basis for fast power restoration, improving power supply reliability, and reducing power failure time of users.
In order to solve the technical problem, the embodiment of the invention provides an intelligent acquisition and remote transmission system for power grid fault recording data, which comprises a plurality of fault recording data acquisition devices and a receiving and analyzing device; wherein the content of the first and second substances,
each fault recording data acquisition device is connected with a corresponding preset external relay protection device, a preset external voltage source or a preset external device; each fault recording data acquisition device is used for acquiring internal working direct-current voltage in normal operation through a preset external voltage source or preset external equipment which is correspondingly connected, automatically acquiring fault recording data on the corresponding preset external relay protection device into binary-represented data after the fault recording data are output in a self-adaptive mode according to the baud rate of the corresponding preset external relay protection device in normal operation, processing the binary-represented data into uniform-format data through coding and decoding processing and unpacking processing, and further forwarding the processed data to the receiving and analyzing device through a data communication network by using a built-in TCP/IP protocol stack;
the receiving and analyzing device is interconnected with each fault recording data acquisition device through a data communication network; the receiving and analyzing device is used for receiving the data sent by each fault recording data acquisition device, processing the data into hexadecimal data, accurately reducing the processed hexadecimal data into fault recording data automatically acquired by each fault recording data acquisition device through a preset software program, forming a corresponding recording graph or data report, and further remotely transmitting the formed corresponding recording graph or data report to a corresponding receiving end user.
Each fault recording data acquisition device comprises a first power supply module, and a self-adaptive intelligent acquisition module, a protection protocol self-adaptive module and a network communication module which are respectively connected with the first power supply module; wherein the content of the first and second substances,
the first power supply module is provided with a reserved port connected with a corresponding preset external voltage source or preset external equipment, and is used for acquiring direct current voltage or alternating current voltage output by the external voltage source by connecting the reserved port with the preset external voltage source or acquiring direct current voltage output by the external voltage source by connecting the reserved port with the preset external equipment, and the direct current voltage or the alternating current voltage is automatically converted into internal working direct current voltage;
the self-adaptive intelligent acquisition module is also respectively connected with the corresponding preset external relay protection device and the protection protocol self-adaptive module, is used for self-adaptively outputting the baud rate of the corresponding preset external relay protection device, automatically acquires fault recording data on the corresponding preset external relay protection device into binary-expressed data and then sends the binary-expressed data into the protection protocol self-adaptive module;
the protection protocol self-adaptive module is also connected with the network communication module and is used for coding, decoding and unpacking the binary fault recording data automatically acquired by the self-adaptive intelligent acquisition module to form uniform format data;
the network communication module is also connected with the receiving and analyzing device through a data communication network and is used for forwarding the data subjected to encoding, decoding and unpacking processing of the protection protocol self-adaptive module to the receiving and analyzing device through the data communication network by utilizing a built-in TCP/IP protocol stack.
The self-adaptive intelligent acquisition modules are connected with corresponding preset external relay protection devices through specific wires; wherein the content of the first and second substances,
the specific wire comprises a main wire and a branch wire connected to the middle part of the main wire; the main line is a data line formed by 25 copper cores, one end of the main line forms a 25-pin serial port connected to a corresponding preset external relay protection device, and the other end of the main line forms a 25-pin serial port as an interface connected with a corresponding preset external printer; the branch line is a data line formed by 3 copper cores, one end of the branch line is directly and correspondingly connected to the middle part of any 3 copper cores in the main line by the 3 copper cores, and the other end of the branch line forms a 3-pin serial port to be connected with the corresponding self-adaptive intelligent acquisition module.
The self-adaptive intelligent acquisition modules are connected with corresponding preset external printers through respective connected specific wires; wherein, the 25-pin serial port that forms through the other end on the specific wire rod that each adaptation intelligent acquisition module links to each other with corresponding external printer of predetermineeing.
The baud rate of each adaptive intelligent acquisition module adaptively corresponds to one of 19200bit/s, 9600bit/s, 5200bit/s, 4800bit/s and 3600bit/s of the preset external relay protection device.
The reserved ports of the first power supply modules, which are connected with the corresponding preset external voltage sources, are provided with alternating current voltage interfaces or direct current voltage interfaces; and a reserved port, which is connected with the corresponding preset external equipment, of each first power supply module is provided with a USB interface and a network cable interface.
Each network communication module comprises a wired communication sub-module and a wireless communication sub-module; wherein the content of the first and second substances,
a USB interface, an optical fiber interface and an RJ45 network cable interface are formed on the wired communication submodule;
and a WIFI interface, a ZigBee interface, a Bluetooth interface, a 4G interface and a 5G interface are formed on the wireless communication sub-module.
The receiving and analyzing device comprises a data receiving module, a data restoring module, a data analyzing module and a remote transmission module which are connected in sequence; wherein the content of the first and second substances,
the data receiving module is connected with each fault recording data acquisition device through a data communication network and is used for receiving and forwarding data sent by each fault recording data acquisition device;
the data reduction module is used for processing the data forwarded by the data receiving module into hexadecimal data and accurately reducing the processed hexadecimal data into fault recording data automatically acquired by each fault recording data acquisition device through a preset software program;
the data analysis module is used for forming a corresponding recording chart or a corresponding data report;
and the remote transmission module is used for receiving end users through a number group which is developed and set in advance and sending the formed corresponding recording chart or data report to the receiving end users.
And the remote transmission module sends the formed corresponding recording chart or data report to a receiving end user through WeChat, QQ, multimedia message or mail.
And the receiving end user is a station team leader, a supervisor or a technician.
The embodiment of the invention has the following beneficial effects:
1. the data transmission between the fault wave recording data acquisition device and the receiving analysis device is realized through a data communication network (such as a mobile communication network, a cloud terminal and the like), so that the fault wave recording data are transmitted without depending on a system public network, the problem of failure or distortion of remote transmission of the fault wave recording data is avoided, and meanwhile, the fault wave recording data acquired by the fault wave recording data acquisition device are binary data and are processed into data in a unified format through encoding, decoding and unpacking, so that the receiving analysis device can accurately restore the fault wave recording data on an external relay protection device only by receiving and converting the data into hexadecimal data, the limitation of a protocol conversion protocol is eliminated, the maximum manpower and material resources are reduced, the working efficiency is improved, and a reliable basis is provided for quick power restoration, reliable power supply and reduction of the power failure time of a user;
2. the invention can print the fault recording data on site, and also can electronically store and print the data on the receiving and analyzing device.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is within the scope of the present invention for those skilled in the art to obtain other drawings based on the drawings without inventive exercise.
Fig. 1 is a block diagram of a structure of an intelligent acquisition and remote transmission system for power grid fault recording data according to an embodiment of the present invention;
fig. 2 is an application scene diagram of the power grid fault recording data intelligent acquisition and remote transmission system provided by the embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1, in an embodiment of the present invention, the system for intelligently acquiring and remotely transmitting power grid fault recording data includes a plurality of fault recording data acquisition devices 1 and a receiving and analyzing device 2, where each fault recording data acquisition device 1 is interconnected through a data communication network (e.g., public communication networks such as a mobile network, a telecommunication network, and a cloud); wherein the content of the first and second substances,
each fault recording data acquisition device 1 is connected with a corresponding preset external relay protection device (not shown), a preset external voltage source (not shown) or a preset external device (not shown); each fault recording data acquisition device 1 is used for acquiring internal working direct-current voltage in normal operation through a preset external voltage source or preset external equipment which is correspondingly connected, and after the internal working direct-current voltage is output in normal operation in a self-adaptive mode at the baud rate (such as one of 19200bit/s, 9600bit/s, 5200bit/s, 4800bit/s and 3600 bit/s) of a corresponding preset external relay protection device, fault recording data on the corresponding preset external relay protection device are automatically acquired into binary representation data and are processed into uniform format data through coding and decoding processing and unpacking, and the processed data are further transmitted to the receiving analysis device 2 through a data communication network by using a built-in TCP/IP protocol stack;
the receiving and analyzing device 2 is connected with each fault recording data acquisition device 1 through a data communication network; the receiving and analyzing device 2 is used for receiving the data sent by each fault recording data acquisition device 1, processing the data into hexadecimal data, accurately reducing the processed hexadecimal data into fault recording data automatically acquired by each fault recording data acquisition device through a preset software program, forming a corresponding recording image or data report, and further remotely transmitting the formed corresponding recording image or data report to a corresponding receiving end user. It should be noted that, the receiving and analyzing device 2 automatically processes the disordered information or graphics in the received power grid fault recording data into hexadecimal through a developed software program, and restores the hexadecimal data into correct received data (visualized Chinese characters, numbers, characters and readable waveform diagrams) through Chinese character coding processing, thereby avoiding the problem of failure or distortion of remote transmission of the power grid fault recording data. Of course, the software program can also form the restored fault recording data into a recording chart or a data report to be visually displayed, so that subsequent fault analysis is facilitated.
In the embodiment of the invention, ① each fault recording data acquisition device 1 and the receiving analysis device 2 carry out data transmission through a data communication network, so that the problem of failure or distortion of power grid fault recording data remote transmission is avoided without relying on power grid system public network transmission, and the potential safety hazard brought to the public network by adopting the power grid system public network is also avoided, ② fault recording data acquisition devices 1 are self-adaptive to the baud rate of corresponding preset external relay protection devices, the fault recording data are processed into uniform format data through encoding, decoding and unpacking after being binary data, the receiving analysis device 2 can accurately restore the fault recording data on the external relay protection devices only by receiving and converting the fault recording data into hexadecimal data, so that the limitation of protocol conversion is eliminated, the problem that power grid fault recording data acquisition various manufacturers protect protocol conversion restriction is avoided, a large number of examples, material resources and environmental protection are saved, the problem that power grid system faults are rapidly restored and supplied power is effectively solved, the power grid system stably operates and submits high power supply reliability can be solved, ③ fault recording data can be printed on site, and the problem that electronic quality printing cannot be realized on each fault recording data acquisition device 1 and the receiving analysis device 2 can not be archived electronically.
In the embodiment of the present invention, each fault recording data acquisition apparatus 1 includes a first power module 11, and an adaptive intelligent acquisition module 12, a protection protocol adaptive module 13, and a network communication module 14, which are respectively connected to the first power module 11; wherein the content of the first and second substances,
the first power module 11 is provided with a reserved port connected with a corresponding preset external voltage source or preset external equipment, and is used for acquiring direct current voltage or alternating current voltage output by the external voltage source by connecting the reserved port with the preset external voltage source or acquiring direct current voltage output by the external voltage source by connecting the reserved port with the preset external equipment, and the direct current voltage or the alternating current voltage is automatically converted into internal working direct current voltage; an alternating current voltage interface (such as a three-phase alternating current plug) or a direct current voltage interface (such as a USB interface and a cylindrical male plug) is arranged on a reserved port of the first power module 11 connected with a corresponding preset external voltage source; the reserved port of the first power module 11 connected to the corresponding preset external device includes but is not limited to a USB interface and a network cable interface (such as an RJ45 interface and an RJ48 interface);
the self-adaptive intelligent acquisition module 12 is also respectively connected with the corresponding preset external relay protection device and the protection protocol self-adaptive module 13, and is used for self-adaptively outputting the baud rate of the corresponding preset external relay protection device, automatically acquiring fault recording data on the corresponding preset external relay protection device into binary-expressed data and then sending the binary-expressed data into the protection protocol self-adaptive module 13; the self-adaptive intelligent acquisition module 12 is connected with a corresponding preset external relay protection device through a specific wire (such as a one-to-two serial port data line); the specific wire comprises a main wire and a branch wire connected to the middle part of the main wire; the main line is a data line formed by 25 copper cores, one end of the main line forms a 25-pin serial port to be connected to a corresponding preset external relay protection device, and the other end of the main line forms a 25-pin serial port to be connected with a printer interface and a corresponding preset external printer; the branching line is a data line formed by 3 copper cores, one end of the data line is directly and correspondingly connected to the middle part of any 3 copper cores in the main line by the 3 copper cores, and the other end of the data line forms a 3-pin serial port to be connected with the corresponding self-adaptive intelligent acquisition module 12; it can be understood that the binary data composed of 0 and 1 on the 25-pin serial data line is only transmitted through the 3-pin RXD, TXD and GND connecting lines on the split line to form a level one-way output design, so that no signal reverse or two-way transmission design exists, and the preset external relay protection devices are prevented from being attacked by virus data;
the protection protocol self-adaptive module 13 is also connected with the network communication module 14 and is used for coding, decoding and unpacking the binary-expressed fault recording data automatically acquired by the self-adaptive intelligent acquisition module 12 to form uniform format data; it should be noted that the protection protocol self-adaptive module 13 is not restricted by various voltage grades, different models and different format protocols, and can automatically encode/decode, pack/unpack, and automatically adapt to various voltage grades, different models and different formats of fault recording data without manual intervention;
the network communication module 14 is also connected with the receiving and analyzing device 2 through a data communication network, and is used for forwarding the data subjected to encoding, decoding and unpacking processing by the protection protocol self-adaptive module 13 to the receiving and analyzing device 2 through the data communication network by using a built-in TCP/IP protocol stack; the network communication module 14 comprises a wired communication sub-module and a wireless communication sub-module; the wired communication sub-module is formed with a USB interface, an optical fiber interface, an RJ45 network cable interface and the like; the wireless communication sub-module is formed with but not limited to a WIFI interface, a ZigBee interface, a Bluetooth interface, a 4G interface, a 5G interface and the like. In one embodiment, a TCP/IP protocol stack is built in to convert serial port data into WIFI data and convert power grid fault recording data into wireless signals; in another embodiment, a TCP/IP protocol stack is built in to convert serial port data into data passing through a switch and convert power grid fault recording data into wired signals; in another embodiment, the power grid fault recording data is converted into a USB signal through USB interface data.
In the embodiment of the present invention, the receiving and analyzing device 2 includes a data receiving module 21, a data restoring module 22, a data analyzing module 23, and a remote transmitting module 24, which are connected in sequence; wherein the content of the first and second substances,
the data receiving module 21 is connected to each fault recording data acquisition device 1 through a data communication network, and is configured to receive and forward data sent by each fault recording data acquisition device 1 (such as the network communication module 14);
the data restoring module 22 is configured to process the data forwarded by the data receiving module 21 into hexadecimal data, and accurately restore the processed hexadecimal data into fault recording data automatically acquired by each fault recording data acquisition device 1 (such as the adaptive intelligent acquisition module 11) through a preset software program;
the data analysis module 23 is used for forming a corresponding wave recording chart or a corresponding data report;
the remote transmission module 24 is used for receiving end users through number groups which are developed in advance and sending the formed corresponding recording chart or data report to the receiving end users; the remote transmission module 24 sends the formed corresponding recording chart or data report to a receiving end user (such as a station team leader, a supervisor or a technician) in a mode of WeChat, QQ, multimedia message or mail.
It is understood that the receiving and analyzing device 2 further includes a second power module 25, and the second power module 25 is connected to the data receiving module 21, the data restoring module 22, the data analyzing module 23, and the remote transmitting module 24 to supply internal operating voltage to each module.
As shown in fig. 2, an application scenario of the power grid fault recording data intelligent acquisition and remote transmission system in the embodiment of the present invention is further described:
the fault recording data acquisition devices 1 to n automatically acquire fault recording data on the relay protection devices 1 to n as binary data, process the binary data into data with a uniform format through respective encoding, decoding and unpacking, and send the data to the receiving and analyzing device 2 for receiving through a data switch device from a wired station or a public router (wireless router) from a wireless station.
No matter what kind of power grid fault recording data transmission is adopted in the plant station, after the power grid fault recording data are transmitted to the receiving and analyzing device 2, disordered information or graphics in the received power grid fault recording data are automatically processed through a development program, then the information or the graphics are converted into hexadecimal, and the hexadecimal data are restored into correct received data (visual Chinese characters, numbers, characters and readable oscillograms) through Chinese character coding processing, so that the problem that remote transmission failure or distortion of the power grid fault recording data is avoided.
In the receiving and analyzing device 2, a number group receiving end user (such as a station team leader, a supervisor, a technician and the like) corresponding to the transmission is developed in advance, a software program of the receiving and analyzing device 2 automatically and immediately transmits the power grid fault recording data to the corresponding number group receiving end user in a remote transmission mode through the internet, the number group receiving end user immediately knows the power grid fault characteristic, and can immediately judge whether the power grid fault can timely recover the operation of a power grid system, so that the working efficiency is improved.
The embodiment of the invention has the following beneficial effects:
1. the data transmission between the fault wave recording data acquisition device and the receiving analysis device is realized through a data communication network (such as a mobile communication network, a cloud terminal and the like), so that the fault wave recording data are transmitted without depending on a system public network, the problem of failure or distortion of remote transmission of the fault wave recording data is avoided, and meanwhile, the fault wave recording data acquired by the fault wave recording data acquisition device are binary data and are processed into data in a unified format through encoding, decoding and unpacking, so that the receiving analysis device can accurately restore the fault wave recording data on an external relay protection device only by receiving and converting the data into hexadecimal data, the limitation of a protocol conversion protocol is eliminated, the maximum manpower and material resources are reduced, the working efficiency is improved, and a reliable basis is provided for quick power restoration, reliable power supply and reduction of the power failure time of a user;
2. the invention can print the fault recording data on site, and also can electronically store and print the data on the receiving and analyzing device.
The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention, and it is therefore to be understood that the invention is not limited by the scope of the appended claims.
Claims (10)
1. A power grid fault recording data intelligent acquisition and remote transmission system is characterized by comprising a plurality of fault recording data acquisition devices and a receiving and analyzing device; wherein the content of the first and second substances,
each fault recording data acquisition device is connected with a corresponding preset external relay protection device, a preset external voltage source or a preset external device; each fault recording data acquisition device is used for acquiring internal working direct-current voltage in normal operation through a preset external voltage source or preset external equipment which is correspondingly connected, automatically acquiring fault recording data on the corresponding preset external relay protection device into binary-represented data after the fault recording data are output in a self-adaptive mode according to the baud rate of the corresponding preset external relay protection device in normal operation, processing the binary-represented data into uniform-format data through coding and decoding processing and unpacking processing, and further forwarding the processed data to the receiving and analyzing device through a data communication network by using a built-in TCP/IP protocol stack;
the receiving and analyzing device is interconnected with each fault recording data acquisition device through a data communication network; the receiving and analyzing device is used for receiving the data sent by each fault recording data acquisition device, processing the data into hexadecimal data, accurately reducing the processed hexadecimal data into fault recording data automatically acquired by each fault recording data acquisition device through a preset software program, forming a corresponding recording graph or data report, and further remotely transmitting the formed corresponding recording graph or data report to a corresponding receiving end user.
2. The system for intelligently acquiring and remotely transmitting grid fault recording data according to claim 1, wherein each fault recording data acquisition device comprises a first power module, and an adaptive intelligent acquisition module, a protection protocol adaptive module and a network communication module which are respectively connected with the first power module; wherein the content of the first and second substances,
the first power supply module is provided with a reserved port connected with a corresponding preset external voltage source or preset external equipment, and is used for acquiring direct current voltage or alternating current voltage output by the external voltage source by connecting the reserved port with the preset external voltage source or acquiring direct current voltage output by the external voltage source by connecting the reserved port with the preset external equipment, and the direct current voltage or the alternating current voltage is automatically converted into internal working direct current voltage;
the self-adaptive intelligent acquisition module is also respectively connected with the corresponding preset external relay protection device and the protection protocol self-adaptive module, is used for self-adaptively outputting the baud rate of the corresponding preset external relay protection device, automatically acquires fault recording data on the corresponding preset external relay protection device into binary-expressed data and then sends the binary-expressed data into the protection protocol self-adaptive module;
the protection protocol self-adaptive module is also connected with the network communication module and is used for coding, decoding and unpacking the binary fault recording data automatically acquired by the self-adaptive intelligent acquisition module to form uniform format data;
the network communication module is also connected with the receiving and analyzing device through a data communication network and is used for forwarding the data subjected to encoding, decoding and unpacking processing of the protection protocol self-adaptive module to the receiving and analyzing device through the data communication network by utilizing a built-in TCP/IP protocol stack.
3. The system for intelligently acquiring and remotely transmitting grid fault recording data according to claim 2, wherein each adaptive intelligent acquisition module is connected with a corresponding preset external relay protection device through a specific wire; wherein the content of the first and second substances,
the specific wire comprises a main wire and a branch wire connected to the middle part of the main wire; the main line is a data line formed by 25 copper cores, one end of the main line forms a 25-pin serial port connected to a corresponding preset external relay protection device, and the other end of the main line forms a 25-pin serial port as an interface connected with a corresponding preset external printer; the branch line is a data line formed by 3 copper cores, one end of the branch line is directly and correspondingly connected to the middle part of any 3 copper cores in the main line by the 3 copper cores, and the other end of the branch line forms a 3-pin serial port to be connected with the corresponding self-adaptive intelligent acquisition module.
4. The system for intelligently acquiring and remotely transmitting grid fault recording data according to claim 3, wherein each adaptive intelligent acquisition module is further connected with a corresponding preset external printer through a specific wire connected with each adaptive intelligent acquisition module; wherein, the 25-pin serial port that forms through the other end on the specific wire rod that each adaptation intelligent acquisition module links to each other with corresponding external printer of predetermineeing.
5. The system for intelligently acquiring and remotely transmitting power grid fault recording data as claimed in claim 2, wherein each adaptive intelligent acquisition module is adaptive to one of 19200bit/s, 9600bit/s, 5200bit/s, 4800bit/s and 3600bit/s of the baud rate of the corresponding preset external relay protection device.
6. The system for intelligently acquiring and remotely transmitting grid fault recording data according to claim 2, wherein an alternating voltage interface or a direct voltage interface is arranged on a reserved port of each first power supply module connected with a corresponding preset external voltage source; and a reserved port, which is connected with the corresponding preset external equipment, of each first power supply module is provided with a USB interface and a network cable interface.
7. The system for intelligently acquiring and remotely transmitting grid fault recording data according to claim 2, wherein each network communication module comprises a wired communication sub-module and a wireless communication sub-module; wherein the content of the first and second substances,
a USB interface, an optical fiber interface and an RJ45 network cable interface are formed on the wired communication submodule;
and a WIFI interface, a ZigBee interface, a Bluetooth interface, a 4G interface and a 5G interface are formed on the wireless communication sub-module.
8. The system for intelligently acquiring and remotely transmitting grid fault recording data according to claim 1, wherein the receiving and analyzing device comprises a data receiving module, a data restoring module, a data analyzing module and a remote transmitting module which are connected in sequence; wherein the content of the first and second substances,
the data receiving module is connected with each fault recording data acquisition device through a data communication network and is used for receiving and forwarding data sent by each fault recording data acquisition device;
the data reduction module is used for processing the data forwarded by the data receiving module into hexadecimal data and accurately reducing the processed hexadecimal data into fault recording data automatically acquired by each fault recording data acquisition device through a preset software program;
the data analysis module is used for forming a corresponding recording chart or a corresponding data report;
and the remote transmission module is used for receiving end users through a number group which is developed and set in advance and sending the formed corresponding recording chart or data report to the receiving end users.
9. The system for intelligently acquiring and remotely transmitting power grid fault recording data according to claim 8, wherein the remote transmission module sends the formed corresponding recording chart or data report to a receiving end user through WeChat, QQ, multimedia message or mail.
10. The system for intelligently collecting and remotely transmitting grid fault recording data as claimed in claim 9, wherein the receiving end user is a station team leader, supervisor or technician.
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