Relay protection external operation information intelligent management system and method

Abstract

The present invention relates to the technical field of power systems. Disclosed is a relay protection external operation information intelligent management system, comprising: an input module, a data snapshot module, a data acquisition module, a data conversion module, a data storage module, a fault analysis module, a report generation module, a signaling alarm module, a data analysis module 0, and a real-time data calling module. The relay protection external operation information intelligent management system provided by the present invention provides multiple reliable data interaction modes, including wired transmission, wireless transmission and calling of other systems, for relay protection external operation information, and collects and analyzes the relay protection external operation information before a fault so as to provide powerful support for fault analysis of dispatchers and secondary personnel, thereby avoiding erroneous analysis and determination on the fault. The present invention achieves better effects in the aspects of applicability, network occupation and system cooperation.

Description

An intelligent management system and method for external operation information of relay protection Technical Field

[0001] The present invention relates to the technical field of intelligent management of power grid data, and in particular to an intelligent management system for external operation information of relay protection. Background Art

[0002] Relay protection is a crucial component of ensuring the safe and stable operation of power systems and serves as the first line of defense. Relay protection systems comprehensively monitor and control power systems, analyze and identify faults within them, and, when a fault occurs, implement appropriate measures based on specific logic and methods to prevent further losses and ensure stable operation.

[0003] The existing relay protection professional system mainly relies on the power grid relay protection and fault information system (referred to as the protection and information system). The protection and information system serves as a link between protection devices, fault recorders and master station monitoring systems. It has the function of uploading relay protection information such as current, voltage, set values, and recordings. After a protection action occurs, the protection and information system can transmit relay protection information to provide effective support for dispatchers to further restore the power grid.

[0004] Different from relay protection information such as current, voltage, set value, and waveform recording, the operating status information of the equipment associated with the relay protection device, such as the DC system, the equipment status in the station (such as the position of the circuit breaker, the switch status of the cabinet door of the terminal box), and the behavioral information of the on-site operators of the relay protection device may all cause the relay protection device to refuse to operate or malfunction. Therefore, the operating status information of the equipment associated with the relay protection device and the behavioral information of the on-site operators of the relay protection device are collectively referred to as relay protection external operating information.

[0005] The external operation information of relay protection is quite special and has the following characteristics:

[0006] 1. External operational information for relay protection systems comes from multiple sources, influenced by a wide range of factors, and with varying collection targets, methods, and requirements. For example, AC and DC systems within a station are transmitted via wired channels. Data within switchyards, such as terminal box doors, requires wireless data format conversion before being collected and transmitted wirelessly. On-site operator behavior information is captured via the on-site video control system and the station's internal video image monitoring system. These transmission methods and data transmission between these systems present bottlenecks, hindering direct data communication and interaction. These independently operating data collection and application systems cannot effectively share information, and the lack of a collaborative operation mechanism between systems makes unified information processing and analysis difficult.

[0007] 2. The external operation information of relay protection contains many types of information and a large capacity, especially the video of the operator. The long operation time leads to long video length, which occupies a large amount of memory space and occupies a high network load during transmission.

[0008] The current traditional relay protection information transmission method has many shortcomings. First, the traditional relay protection data transmission method only supports wired communication methods such as network cables and serial port data. It cannot communicate wirelessly with station equipment or access other systems to retrieve data, and data communication and interaction cannot be carried out directly.

[0009] Secondly, the external operation information of relay protection occupies a large amount of network capacity. When an accident occurs, a large amount of information data is sent up, causing the network load rate to exceed 50%, which is 30% higher than the industry standard.

[0010] Finally, there's a lack of effective sharing between external relay protection operating information and traditional relay protection information collection and application systems. The lack of a collaborative operating mechanism between systems makes it difficult to achieve unified information processing and analysis. For example, the current traditional relay protection fault diagnosis method relies solely on relay protection information transmitted by the security system. This lack of collection, processing, and analysis of external relay protection operating information can lead to erroneous relay protection fault diagnosis. For example, a DC ground fault can cause a relay protection device to fail to operate. Relying solely on relay protection information transmitted by the security system can lead to erroneous relay protection fault diagnosis, thus affecting the dispatcher's judgment and, in turn, hindering the rapid restoration of power and stable operation of the power grid.

[0011] Therefore, an intelligent management system for relay protection external operation information is urgently needed. Relay protection external operation information comes from multiple sources and is influenced by a wide range of factors, with varying collection objects, methods, and requirements. For example, data from the AC and DC systems within the station is transmitted via wired communication, while data from switchyards such as terminal boxes and cabinet doors must be converted to wireless data formats before being collected and transmitted wirelessly. On-site operator behavior information is captured through on-site video control systems and station-based video image monitoring systems. These transmission methods and data transmission between these systems present bottlenecks, preventing direct data communication and interaction. These independently operating data collection and application systems cannot effectively share information, and the lack of a collaborative operation mechanism between systems makes it difficult to achieve unified processing and analysis of information.

[0012] Summary of the Invention

[0013] In view of the above-mentioned problems, the present invention is proposed.

[0014] Therefore, the technical problems solved by the present invention are: the existing relay protection information transmission system has poor applicability and occupies a high network capacity, and how to enhance the optimization of the collaborative operation mechanism between systems.

[0015] In order to solve the above technical problems, the present invention provides the following technical solutions: an intelligent management system for external operation information of relay protection, including: an input module, a data snapshot module, a data acquisition module, a data conversion module, a data storage module, a fault analysis module, a report generation module, a signaling alarm module, a real-time data analysis module and a real-time data calling module.

[0016] As a preferred solution of the intelligent management system for external operation information of relay protection described in the present invention, the input module includes the input module connected to the data snapshot module. When the total input of the entire station accident is received, the input module sends a time stamp signal T1 to the data snapshot module; wherein T1 represents the time when the input module receives the total input of the accident.

[0017] As a preferred solution of the intelligent management system for external operation information of relay protection according to the present invention, wherein: the data snapshot module snapshots the external operation information data of the relay protection of the data acquisition module in the time period T1-T2 to T1+T2; wherein T2 represents the data snapshot delay, T2=T max Perform tuning, T max It is the maximum setting time of protection action within the station.

[0018] As a preferred solution of the intelligent management system for external operation information of relay protection described in the present invention, wherein: the data acquisition module includes a data acquisition module connected to a data snapshot module, and the data acquisition module provides real-time external operation information data of relay protection for the data snapshot module; the data acquisition module includes a wired data acquisition module, a wireless data acquisition module, a video image data call module and an analog quantity acquisition module; the wired data acquisition module collects external operation information of relay protection in the station through the 61850 communication protocol, including the status data of the station DC system and AC system; the wireless data acquisition module collects external operation information of relay protection in the switch yard that cannot be directly transmitted by wire, including the status data of the terminal box cabinet door, oil temperature gauge, winding temperature gauge, SF6 density relay, the actual position of the circuit breaker, the actual position of the energy storage spring, and the temperature and humidity status of the terminal box and the mechanism box; the video image data call module is connected to the on-site operation visualization supervision system and the video image monitoring system in the station, calls the on-site operation video and the daily video image monitoring in the station, and the analog quantity acquisition module is used to collect the operating current and grounding current in the station.

[0019] As a preferred solution of the intelligent management system of relay protection external operation information described in the present invention, wherein: the data conversion module includes the data conversion module connected to the data snapshot module, converting the relay protection external operation information data of the specific format of the T1-T2 to T1+T2 time period of the data snapshot module snapshot into conventional relay protection external operation information data and compressing it; the data conversion module is connected to the real-time data calling module, converting the real-time relay protection external operation information data of the specific format into conventional relay protection external operation information data; the data conversion module is connected to the data storage module, storing the relay protection external operation information of the T1-T2 to T1+T2 time period to the data storage module; the data conversion module is connected to the real-time data analysis module, and transmitting the real-time relay protection external operation information data converted into the conventional format to the real-time data analysis module; the The data conversion module includes a wireless data conversion module and a video image data compression module; the wireless data conversion module is used to convert data in a specific format into regular data according to conversion rules; the video image data compression module is used to compress videos and pictures; the conversion rules are as follows: the specific format 0 of the cabinet door status is converted to closed, the specific format 1 is converted to open, the specific format 1 of the SF6 density relay is converted to normal SF6 gas pressure, the specific format 0 is converted to SF6 gas pressure alarm, the specific format -1 is converted to SF6 gas pressure lock, the specific format 1 of the actual position of the circuit breaker is converted to closed position, the specific format 0 is converted to open position, the specific format 1 of the circuit breaker spring energy storage stroke is converted to stored energy, the specific format 0 is converted to unstored energy, the specific format 1 of the temperature and humidity status is converted to normal, the specific format 0 is converted to abnormal, and the specific format 4mA<I1<20mA of the oil temperature gauge and the winding temperature gauge is converted to temperature, expressed as: t=t l ×(l1÷16);

[0020] Among them, t l is the maximum temperature range of the oil temperature meter or winding temperature meter, and l1 is the analog current sent by the oil temperature meter or winding temperature meter through the RTU.

[0021] As a preferred solution of the intelligent management system for external operation information of relay protection described in the present invention, wherein: the data storage module includes the data storage module connected to the real-time data analysis module, receiving and storing data with abnormal analysis results; the data storage module is connected to the fault analysis module, and sends the external operation information data of the relay protection in the time period T1-T2 to T1+T2 to the fault analysis module for fault analysis.

[0022] As a preferred solution of the intelligent management system of external operation information of relay protection described in the present invention, wherein: the fault analysis module includes analyzing the external operation information data of relay protection according to the time period of T1-T2 to T1+T2, decoding and analyzing the data at the time of T1-T2 to T1+T2, judging the position information of the circuit breaker, the closed position is the normal state, the energy storage spring information of the circuit breaker, the energy stored is the normal state, the status information of the SF6 density relay of the circuit breaker, the normal SF6 pressure is the normal state, checking the status information of the terminal box, the mechanism box and the protection panel cabinet door, closing is the normal state, when it is judged that the equipment information is normal, it is judged that the tripping is caused by non-equipment reasons, and when there is abnormal equipment information, it is judged that there is an abnormality in the equipment before the fault; when there is an abnormality in the equipment before the fault, the abnormal items of the equipment are checked through the daily monitoring video in the station, and it is judged whether there is anyone through video recognition. If there is someone, the human behavior is judged, and if there is no human behavior in the video, If someone appears, an environmental judgment is performed; when the tripping is caused by non-equipment reasons or the equipment was abnormal before the fault and someone was identified, the on-site operation video monitoring system is used to determine whether there is anyone in contact with the tripping equipment. If there is a person in contact with the equipment, the video is used to identify misoperation and accidental touch. If there is misoperation and accidental touch, it is considered that the tripping is caused by human behavior. The fault analysis module sends information that someone was working on the tripping equipment before the equipment tripped and sends the work content. If there is no misoperation and accidental touch, the occurrence of the fault tripping caused by human factors is ruled out; when the tripping is caused by non-equipment reasons or the equipment was abnormal before the fault and no one was identified, an environmental factor analysis is performed, the ground resistance of the protective power branch of the tripping equipment is judged, the ground resistance of the control power branch and the ground resistance of the DC system are detected, if the ground resistance is less than 20kΩ, it is judged that DC grounding exists and the DC system was abnormal before the fault. If the ground resistance is greater than 20kΩ, it is judged that there is no DC grounding and the fault is not caused by the equipment operating environment.

[0023] As a preferred solution of the intelligent management system for external operation information of relay protection described in the present invention, the report generation module includes the report generation module connected to the real-time data analysis module to obtain the analysis data of the real-time data analysis module; the report generation module generates an analysis report according to the time selected by the dispatcher.

[0024] As a preferred solution of the intelligent management system of relay protection external operation information described in the present invention, the real-time data analysis module includes the real-time data analysis module connected to the report generation module and the signaling alarm module, the real-time data analysis module sends the analyzed abnormal displacement information to the report generation module to generate an analysis report, and at the same time, the real-time data analysis module sends the analyzed abnormal displacement information to the signaling alarm module to prompt the dispatcher that there is abnormal displacement information of the relay protection external operation information; the real-time data analysis module is connected to the data conversion module, receives the normal relay protection external operation information data after conversion, and analyzes it at the same time. During the analysis, according to the principle of combining abnormal displacement information with images, when the state of the relay protection associated equipment changes abnormally, it is combined with the video information of the corresponding strain station to determine whether there is corresponding work and whether there is a situation of expanding the working scope.

[0025] As a preferred solution of the intelligent management system for external operation information of relay protection described in the present invention, the real-time data calling module includes the real-time data calling module connected to the data acquisition module, receiving the wired transmission data, wireless transmission data and video image data transmitted by the data acquisition module; the real-time data calling module is connected to the data conversion module, decoding the wireless transmission data transmitted by the data acquisition module and compressing the video image data.

[0026] Another object of the present invention is to provide an intelligent management method for external operation information of relay protection, which can solve the problem of lack of collaborative operation mechanism between current intelligent management systems for external operation information of relay protection through close interactive connection between modules.

[0027] As a preferred solution of the method for intelligent management of external operation information of relay protection according to the present invention, the method comprises: when a fault occurs at time T1, the input module (100) receives the total input of the accident of the entire station, the data snapshot module (200) takes a snapshot of the external operation information data of relay protection collected by the data acquisition module (300) in the time period from T1-T2 to T1+T2, the data acquisition module (300) simultaneously transmits the real-time operation data of the equipment to the real-time data calling module (1000), the data snapshot module (200) and the real-time data calling module (1000) send the data to the data conversion module (400), and converts the data in a specific format into the data according to the conversion The data is converted into regular data according to the conversion rule and sent to the data storage module (500) and the real-time data analysis module (900). The data storage module (500) receives and stores the data with abnormal analysis results and the relay protection external operation information data in the time period T1-T2 to T1+T2. After storage is completed, the relay protection external operation information data in the time period T1-T2 to T1+T2 is forwarded to the fault analysis module (600) for fault cause analysis. The real-time data analysis module (900) sends the abnormal displacement information to the report generation module (700) and the signaling alarm module (800) to generate a fault report and send it to the dispatcher, thereby issuing a fault alarm.

[0028] Beneficial effects of the present invention: The intelligent management system for relay protection external operation information provided by the present invention provides multiple reliable data interaction methods for relay protection external operation information, including wired transmission, wireless transmission, and calling other systems. By collecting and analyzing the external operation information of relay protection before an accident, it provides strong support for fault analysis by dispatchers and secondary personnel, avoiding erroneous analysis and judgment of faults. By inspecting and analyzing daily relay protection external operation information, it supplements existing remote inspections of relay protection, ensures that the relay protection device is in normal operation, and provides a solid foundation for the correct operation of the relay protection device. The present invention achieves better results in terms of applicability, network occupancy, and system collaboration. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] To more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive effort. Among them:

[0030] FIG1 is an overall flow chart of an intelligent management system for external operation information of relay protection provided by the first embodiment of the present invention.

[0031] FIG2 is a general circuit diagram of a single-bay accident in a station of an intelligent management system for external operation information of relay protection provided by the first embodiment of the present invention.

[0032] FIG3 is a data collection diagram of an intelligent management system for external operation information of relay protection provided by the first embodiment of the present invention.

[0033] FIG4 is a schematic diagram of data conversion of an intelligent management system for external operation information of relay protection provided by the first embodiment of the present invention.

[0034] FIG5 is an analysis diagram of the external operation information of relay protection before an accident of an intelligent management system for external operation information of relay protection provided by the second embodiment of the present invention.

[0035] FIG6 is an analysis diagram of the external operation information of relay protection after an accident of an intelligent management system for external operation information of relay protection provided by the second embodiment of the present invention. DETAILED DESCRIPTION

[0036] To make the above-mentioned objects, features, and advantages of the present invention more clearly understood, the following detailed description of the specific embodiments of the present invention is given in conjunction with the accompanying drawings. It is obvious that the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary persons in this field without creative work should fall within the scope of protection of the present invention.

[0037] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0038] Secondly, the term "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in various places throughout this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive of other embodiments.

[0039] The present invention is described in detail with reference to schematic diagrams. For ease of illustration, cross-sectional views of device structures may be partially enlarged and not to scale when describing embodiments of the present invention. Furthermore, the schematic diagrams are merely illustrative and should not limit the scope of the present invention. Furthermore, in actual production, the three-dimensional dimensions of length, width, and depth should be included.

[0040] In the description of the present invention, it should be noted that the terms "upper, lower, inner, and outer" and other references to orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first, second, or third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0041] In this disclosure, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be interpreted broadly. For example, they may refer to fixed, removable, or integral connections. They may also refer to mechanical, electrical, or direct connections, indirect connections through an intermediary, or internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this disclosure.

[0042] Example 1

[0043] 1 , an embodiment of the present invention provides an intelligent management system for external operation information of relay protection, including: an input module 100, a data snapshot module 200, a data acquisition module 300, a data conversion module 400, a data storage module 500, a fault analysis module 600, a report generation module 700, a signaling alarm module 800, a real-time data analysis module 900, and a real-time data summoning module 1000.

[0044] Furthermore, the input module 100 can adapt to multiple transmission formats. Connected to the data snapshot module 200, upon receiving the total station-wide accident input, it transmits a time stamp signal, T1, to the data snapshot module 200. T1 represents the time at which the input module 100 received the total accident input, measured in milliseconds. The station can also receive other input information, which can be manually defined and sent to the dispatcher via the input module.

[0045] It should be noted that the data snapshot module 200 snapshots the relay protection external operation information data of the data acquisition module 300 in the time period from T1-T2 to T1+T2; wherein T2 represents the data snapshot delay, T2=T max Perform tuning, T max It is the maximum setting time of protection action within the station.

[0046] It should also be noted that the data acquisition module 300 includes a data acquisition module 300 connected to the data snapshot module 200, and the data acquisition module 300 provides real-time relay protection external operation information data for the data snapshot module 200; the data acquisition module 300 includes a wired data acquisition module 301, a wireless data acquisition module 302, a video image data call module 303 and an analog acquisition module 304; the wired data acquisition module 301 collects the relay protection external operation information transmitted through the 61850 communication protocol in the station, including the station DC system and AC system status data; the wireless data acquisition module 302 collects the open circuit protection external operation information of the relay protection system; External operating information about relay protection within the substation that cannot be directly transmitted via wired transmission includes the status of the terminal box door, oil temperature gauge, winding temperature gauge, SF6 density relay, the actual position of the circuit breaker and energy storage spring, and the temperature and humidity inside the terminal box and mechanism box. The video image data retrieval module 303 connects the on-site operation visualization supervision system and the station's video image monitoring system to retrieve on-site operation videos and daily video image monitoring within the station. The analog acquisition module primarily collects operating current and ground current within the station, primarily the current of the N600 grounding wire, which is the circuit number for the sole grounding point in the substation's secondary voltage circuit. The wireless data acquisition module 302 utilizes a dedicated network data acquisition mode based on the MDS data transmission radio.

[0047] Furthermore, the wireless data acquisition module 302 is composed of a directional antenna, a data transmission radio, an RTU, and a small communication base station. The directional antenna includes a directional transmitting antenna and a directional receiving antenna. The characteristics of the directional transmitting antenna are to increase the effective utilization rate of the radiation power and increase confidentiality. Its function is to send specific wireless signals. The characteristics of the directional receiving antenna are to enhance the signal strength and increase the anti-interference ability. Its function is to receive specific wireless signals.

[0048] The digital transmission radio is connected to the small communication base station. It is a wireless data acquisition radio that uses digital signal processing, digital modulation and demodulation, and has functions such as forward error correction and equalization soft decision. It is suitable for the external environment where the communication points in the substation are relatively scattered and there is a certain amount of electromagnetic field interference. It can collect wireless data in the small communication base station to the wireless data acquisition module 302.

[0049] The small communication base station collects data from each RTU and transmits the data to the data transmission radio.

[0050] The RTU is located in the substation switchyard. Its main function is to send status information such as the terminal box door switch in the substation switchyard to the small communication base station in the form of 0 / 1, send data in the oil temperature meter and winding temperature meter in the substation to the small communication base station in the form of 4-20mA analog quantity, and send the normal value, alarm value, and lockout value of the SF6 density relay in the switchyard to the small communication base station in the form of 1 / 0 / -1.

[0051] It should be noted that the data conversion module 400 includes a data conversion module 400 connected to the data snapshot module 200, which converts the relay protection external operation information data of the specific format of the T1-T2 to T1+T2 time period of the data snapshot module 200 into conventional relay protection external operation information data and compresses it; the data conversion module 400 is connected to the real-time data calling module 100, which converts the real-time relay protection external operation information data of the specific format into conventional relay protection external operation information data; the data conversion module 400 is connected to the data storage module 500, which stores the relay protection external operation information of the T1-T2 to T1+T2 time period in the data storage module 500; the data conversion module 400 is connected to the real-time data analysis module 900, which converts the real-time relay protection external operation information data of the specific format into conventional relay protection external operation information data. The external operation information data of the protection is transmitted to the real-time data analysis module 900; the function of the wireless data conversion module is to convert the data in a specific format into regular data according to the conversion rules; the conversion rules are as follows: the specific format 0 of the cabinet door status is converted to closed, the specific format 1 is converted to open, the specific format 1 of the SF6 density relay is converted to normal SF6 gas pressure, the specific format 0 is converted to SF6 gas pressure alarm, the specific format -1 is converted to SF6 gas pressure lock, the specific format 1 of the actual position of the circuit breaker is converted to closed position, the specific format 0 is converted to open position, the specific format 1 of the circuit breaker spring energy storage stroke is converted to stored energy, the specific format 0 is converted to unstored energy, the specific format 1 of the temperature and humidity status is converted to normal, the specific format 0 is converted to abnormal, and the specific format 4mA<I1<20mA of the oil temperature gauge and the winding temperature gauge is converted to temperature, expressed as: t=t l ×(l1÷16);

[0052] Among them, t l is the maximum temperature range of the oil or winding temperature gauge, and l1 is the analog current sent by the oil or winding temperature gauge via the RTU. Videos larger than 10Mb and images larger than 2Mb are compressed using the MPEG-4 standard. This compression utilizes frame reconstruction technology to compress and transmit data, minimizing the amount of data needed to achieve optimal image quality. This not only addresses video and audio encoding at a specific bit rate, but also emphasizes the interactivity and flexibility of multimedia systems. The MPEG-4 standard also features adjustable bandwidth, which is proportional to image clarity. Generally, a bandwidth of several hundred KB is sufficient to clearly capture the external operating information of the relay protection system in the video.

[0053] It should also be noted that the data storage module 500 includes a data storage module 500 connected to a real-time data analysis module 900, receiving and storing data with abnormal analysis results; the data storage module 500 is connected to a fault analysis module 600, sending the relay protection external operation information data of the T1-T2 to T1+T2 time period to the fault analysis module 600 for fault analysis.

[0054] Furthermore, the fault analysis module 600 includes analyzing the external operation information data of the relay protection in the time period T1-T2 to T1+T2, decoding and analyzing the data at the time of T1-T2 to T1+T2, judging the position information of the circuit breaker, the closed position is normal, the energy storage spring information of the circuit breaker, the stored energy is normal, the status information of the SF6 density relay of the circuit breaker, the normal SF6 pressure is normal, checking the status information of the terminal box, the mechanism box and the protection panel cabinet door, the closed state is normal, and when it is judged that the device information is normal, it is judged that the tripping is caused by non-device reasons. When there is abnormal device information, it is judged that there was an abnormality in the device before the fault.

[0055] When there is an abnormality in the equipment before the fault, the abnormal items of the equipment are checked through the daily monitoring video in the station, and the video recognition is used to determine whether there is anyone in the segment. If there is someone, the human behavior is judged. If there is no one in the video, the environment is judged. When the tripping is caused by non-equipment reasons or the equipment is abnormal before the fault and someone is identified, the on-site operation video monitoring system is used to determine whether there is anyone in contact with the tripped equipment. If there is a person in contact with the equipment, the video recognition is used to determine the misoperation and accidental contact. If there is misoperation and accidental contact, it is regarded as the tripping caused by human behavior, and the fault analysis module 600 issues a warning before the equipment trips. Information about someone working on the tripping device and sending the work content is sent. If there is no misoperation or accidental contact, the fault tripping is ruled out as a result of human factors. When the tripping is caused by non-equipment reasons or the equipment was abnormal before the fault and no one was identified, an environmental factor analysis is performed, and the ground resistance of the protective power branch of the tripping device is judged. The ground resistance of the control power branch and the ground resistance of the DC system are detected. If the ground resistance is less than 20kΩ, it is judged that DC grounding exists and that the DC system was abnormal before the fault. If the ground resistance is greater than 20kΩ, it is judged that DC grounding does not exist and the fault is not caused by the equipment operating environment.

[0056] It should be noted that the report generation module 700 includes a report generation module 700 connected to the real-time data analysis module 900 to obtain analysis data of the real-time data analysis module 900; the report generation module 700 generates an analysis report according to the time selected by the dispatcher.

[0057] It should also be noted that the real-time data analysis module 900 includes a real-time data analysis module 900 connected to the report generation module 700 and the signaling alarm module 800. The real-time data analysis module 9 sends the analyzed abnormal displacement information to the report generation module 700 to generate an analysis report. At the same time, the real-time data analysis module 900 sends the analyzed abnormal displacement information to the signaling alarm module 800 to prompt the dispatcher that there is abnormal displacement information of the external operation information of the relay protection; the real-time data analysis module 900 is connected to the data conversion module 400, receives the normal external operation information data of the relay protection after conversion, and performs Perform analysis according to the principle of combining abnormal displacement information with images. When the status of the relay protection associated equipment changes abnormally, the video information of the corresponding power station is combined to determine whether there is corresponding work and whether there is a situation of expanding the working scope; the real-time data summoning module 1000 includes a real-time data summoning module 1000 connected to the data acquisition module 300, receiving the wired transmission data, wireless transmission data and video image data transmitted by the data acquisition module 300; the real-time data summoning module 1000 is connected to the data conversion module 400, decoding the wireless transmission data transmitted by the data acquisition module 300 and compressing the video image data.

[0058] Example 2

[0059] 5-6 , which are an embodiment of the present invention, provide an intelligent management system for external operation information of relay protection. In order to verify the beneficial effects of the present invention, scientific demonstration is carried out through economic benefit calculation and simulation experiments.

[0060] Table 1220kVXX line fault relay protection external operation information transmission table

[0061] Example 3

[0062] One embodiment of the present invention provides a method for intelligent management of external operating information of relay protection, including: when a fault occurs at time T1, the input module 100 receives the total input of the entire station accident, the data snapshot module 200 snapshots the external operating information data of the relay protection collected by the data acquisition module 300 during the time period T1-T2 to T1+T2, the data acquisition module 300 simultaneously transmits the real-time operating data of the device to the real-time data call module 1000, the data snapshot module 200 and the real-time data call module 1000 send the data to the data conversion module 400, which converts the data in the specific format into regular data according to the conversion rules and sends it to the data storage. Module 500 and real-time data analysis module 900, the data storage module 500 receives and stores the data with abnormal analysis results and the relay protection external operation information data of the time period T1-T2 to T1+T2, and after completing the storage, forwards the relay protection external operation information data of the time period T1-T2 to T1+T2 to the fault analysis module 600 for fault cause analysis, and the real-time data analysis module 900 sends the abnormal displacement information to the report generation module 700 and the alarm sending module 800 to generate a fault report and send it to the dispatcher, and issue a fault alarm.

[0063] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. An intelligent management system for external operation information of relay protection, characterized in that: include: An input module (100), a data snapshot module (200), a data acquisition module (300), a data conversion module (400), a data storage module (500), a fault analysis module (600), a report generation module (700), a signaling alarm module (800), a real-time data analysis module (900), and a real-time data summoning module (1000); The input module (100) is connected to the data snapshot module (200), and when receiving the total input of the whole station accident, the input module (100) sends a time stamp signal T1 to the data snapshot module (200); The data snapshot module (200) snapshots the relay protection external operation information data of the data acquisition module (300) according to the time period from T1-T2 to T1+T2; Where T2 represents the data snapshot delay, T2 = T max Adjustment, T max The maximum setting time of the protection action in the station; The data acquisition module (300) acquires real-time external operation information of relay protection; The data conversion module (400) transmits the preset type of data with fidelity, compresses and transmits the remaining types of data, and converts the relay protection external operation information in a specific format into regular information; The data storage module (500) receives and stores data; The fault analysis module (600) analyzes and classifies faults according to a preset built-in fault analysis method, thereby realizing intelligent processing and analysis of data; The report generation module (700) generates a report based on the real-time data analysis results; The message alarm module (800) sends the abnormal results in the real-time data analysis to the dispatcher and issues an alarm; The real-time analysis module (900) analyzes abnormal changes in real-time relay protection external operation information; The real-time data calling module (1000) calls for real-time external operation information of relay protection.

2. The intelligent management system for external operation information of relay protection according to claim 1, characterized in that: The data acquisition module (300) is connected to the data snapshot module (200), and the data acquisition module (300) provides the data snapshot module (200) with real-time relay protection external operation information data; The data acquisition module (300) comprises a wired data acquisition module (301), a wireless data acquisition module (302), a video image data calling module (303) and an analog quantity acquisition module (304); The wired data acquisition module (301) acquires external operation information of relay protection in the station through data transmission via the 61850 communication protocol, including status data of the station DC system and AC system; The wireless data acquisition module (302) acquires external operation information of relay protection in the switch field that cannot be directly transmitted via wires, including status data of terminal box cabinet door, oil temperature gauge, winding temperature gauge, SF6 density relay, actual position of circuit breaker, actual position of energy storage spring, and status of temperature and humidity in terminal box and mechanism box; The video image data calling module (303) is connected to the on-site operation visual supervision system and the video image monitoring system in the station, and calls the on-site operation video and the daily video image monitoring in the station; The analog quantity acquisition module (304) is used to collect the operating current and grounding current in the station.

3. The intelligent management system for external operation information of relay protection according to claim 2, characterized in that: The data conversion module (400) is connected to the data snapshot module (200), and converts the relay protection external operation information data in a specific format in the time period T1-T2 to T1+T2 of the data snapshot module (200) into conventional relay protection external operation information data and compresses the data; The data conversion module (400) is connected to the real-time data calling module (1000) to convert the real-time relay protection external operation information data in a specific format into conventional relay protection external operation information data; The data conversion module (400) is connected to the data storage module (500) to store the external operation information of the relay protection in the time period from T1-T2 to T1+T2 in the data storage module (500); The data conversion module (400) is connected to the real-time data analysis module (900) to transmit the real-time relay protection external operation information data converted into a conventional format to the real-time data analysis module (900); The data conversion module (400) comprises a wireless data conversion module (401) and a video image data compression module (402); The wireless data conversion module (401) is used to convert data in a specific format into regular data according to a conversion rule; The video image data compression module (402) is used to compress videos and pictures; The conversion rules are as follows: the specific format 0 of the cabinet door status is converted to closed, the specific format 1 is converted to open, the specific format 1 of the SF6 density relay is converted to normal SF6 gas pressure, the specific format 0 is converted to SF6 gas pressure alarm, the specific format -1 is converted to SF6 gas pressure lock, the specific format 1 of the actual position of the circuit breaker is converted to closed position, the specific format 0 is converted to open position, the specific format 1 of the circuit breaker spring energy storage stroke is converted to stored energy, the specific format 0 is converted to unstored energy, the specific format 1 of the temperature and humidity status is converted to normal, the specific format 0 is converted to abnormal, and the specific format 4mA<I1<20mA of the oil temperature gauge and the winding temperature gauge is converted to temperature, which is expressed as: t=t l ×(l1÷16); Among them, t l is the maximum temperature range of the oil temperature meter or the winding temperature meter, and l1 is the current analog value sent by the oil temperature meter or the winding temperature meter through the RTU.

4. The intelligent management system for external operation information of relay protection according to claim 3, characterized in that: The data storage module (500) is connected to the real-time data analysis module (900) to receive and store data with abnormal analysis results; The data storage module (500) is connected to the fault analysis module (600) and sends the relay protection external operation information data in the time period from T1-T2 to T1+T2 to the fault analysis module (600) for fault analysis.

5. The intelligent management system for external operation information of relay protection according to claim 4, characterized in that: The fault analysis module (600) includes analyzing the external operation information data of the relay protection in the time period from T1-T2 to T1+T2, decoding and analyzing the data at the time from T1-T2 to T1+T2, judging the position information of the circuit breaker, the closed position is a normal state, the energy storage spring information of the circuit breaker, the energy stored is a normal state, the state information of the SF6 density relay of the circuit breaker, the SF6 pressure is normal, checking the state information of the terminal box, the mechanism box and the protection panel cabinet door, the closed state is a normal state, and when it is judged that the equipment information is normal, it is judged that the tripping is caused by non-equipment reasons, and when there is abnormal equipment information, it is judged that there is an abnormality in the equipment before the fault; When the equipment is abnormal before the failure, the abnormal items of the equipment are checked through the daily monitoring video in the station, and the video recognition is used to determine whether there is a person in the segment. If there is a person, the human behavior is judged. If there is no one in the video, the environment is judged; When the tripping is caused by non-equipment reasons or the equipment is abnormal before the fault and someone is identified, the video in the on-site operation video monitoring system is used to determine whether there is a person in contact with the tripping equipment. If there is a person in contact with the equipment, the video is used to determine misoperation and accidental contact. If there is misoperation and accidental contact, it is considered that the tripping is caused by human behavior. The fault analysis module (600) sends information that someone worked on the tripping equipment before the equipment tripped and sends the work content. If there is no misoperation and accidental contact, the occurrence of the fault tripping is ruled out as a result of human factors. When the trip is caused by non-equipment reasons or the equipment is abnormal before the fault and no one is identified, the environmental factor analysis is carried out to determine the ground resistance of the protective power branch of the tripped equipment, detect the ground resistance of the control power branch and the ground resistance of the DC system. If the ground resistance is less than 20kΩ, it is determined that there is DC grounding. If there is an abnormality in the DC system before the fault, if the ground resistance is greater than 20kΩ, it is determined that there is no DC grounding. The fault occurs due to reasons other than the equipment operating environment.

6. The intelligent management system for external operation information of relay protection according to claim 5, characterized in that: The report generation module (700) is connected to the real-time data analysis module (900) to obtain analysis data of the real-time data analysis module (900); The report generation module (700) generates an analysis report according to the time selected by the dispatcher.

7. The intelligent management system for external operation information of relay protection according to claim 6, characterized in that: The real-time data analysis module (900) is connected to the report generation module (700) and the signaling alarm module (800). The real-time data analysis module (900) sends the analyzed abnormal displacement information to the report generation module (700) to generate an analysis report. At the same time, the real-time data analysis module (900) sends the analyzed abnormal displacement information to the signaling alarm module (800) to prompt the dispatcher that there is abnormal displacement information of the external operation information of the relay protection. The real-time data analysis module (900) is connected to the data conversion module (400), receives the converted normal relay protection external operation information data, and performs analysis at the same time. During the analysis, the principle of combining abnormal displacement information with images is followed. When the state of the relay protection associated equipment is abnormally displaced, it is combined with the video information of the corresponding strain station to determine whether there is corresponding work and whether there is a situation of expanding the working range. The real-time data summoning module (1000) is connected to the data acquisition module (300) and receives wired transmission data, wireless transmission data and video image data transmitted by the data acquisition module (300); The real-time data summoning module (1000) is connected to the data conversion module (400) to decode the wireless transmission data transmitted by the data acquisition module (300) and compress the video image data.

8. A method for intelligent management of external operation information of relay protection according to any one of claims 1 to 7, characterized in that: include: When a fault occurs at time T1, the input module (100) receives the total input of the whole station accident, the data snapshot module (200) takes a snapshot of the external operation information data of the relay protection collected by the data acquisition module (300) in the time period from T1-T2 to T1+T2, and the data acquisition module (300) simultaneously transmits the real-time operation data of the equipment to the real-time data calling module (1000), the data snapshot module (200) and the real-time data calling module (1000) send the data to the data conversion module (400), which converts the data in a specific format into regular data according to the conversion rules and sends them to the data storage module (400). The data storage module (500) receives and stores the data with abnormal analysis results and the relay protection external operation information data in the time period from T1-T2 to T1+T2. After storage is completed, the relay protection external operation information data in the time period from T1-T2 to T1+T2 is forwarded to the fault analysis module (600) for fault cause analysis. The real-time data analysis module (900) sends the abnormal displacement information to the report generation module (700) and the alarm sending module (800) to generate a fault report and send it to the dispatcher, thereby issuing a fault alarm.

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