CN210514465U - Intelligent abnormal monitoring device for relay protection secondary circuit - Google Patents
Intelligent abnormal monitoring device for relay protection secondary circuit Download PDFInfo
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- CN210514465U CN210514465U CN201920540381.0U CN201920540381U CN210514465U CN 210514465 U CN210514465 U CN 210514465U CN 201920540381 U CN201920540381 U CN 201920540381U CN 210514465 U CN210514465 U CN 210514465U
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Abstract
The utility model discloses an unusual intelligent monitoring device of relay protection secondary circuit relates to electric power system relay protection field, include: the wave recording initialization unit is used for reading a wave recording starting message of the relay protection equipment and/or the fault wave recorder when an internal fault and an external fault of a zone occur, processing and extracting a wave recording signal in the wave recording message; a loop abnormity monitoring unit for judging the abnormity type of the secondary loop of the protection device according to the recording signal; an analysis result output unit for prompting and alarming the abnormal type; the output end of the wave recording initialization unit is connected with the input end of the loop abnormity monitoring unit, and the output end of the loop abnormity monitoring unit is connected with the input end of the analysis result output unit; the starting recording real-time automatic analysis and judgment based on the protection equipment can reduce the dependence on human factors, can find the hidden defect of the secondary circuit of the protection equipment, and improves the operation reliability of the protection equipment.
Description
Technical Field
The utility model relates to an electric power system relay protection field especially relates to an unusual intelligent monitoring device of relay protection secondary circuit.
Background
The relay protection equipment is an important component of the power system and plays a critical decision role in ensuring the safe and economic operation of the power system and preventing accidents from happening and expanding. In recent years, malfunction accidents of protection equipment have occurred due to the potential of secondary circuits such as ac current voltage and switching value. Multiple accident surveys show that hidden defects of related equipment causing misoperation can be shown in a period of time of new operation or considerable operation, and are particularly obvious when the equipment experiences internal and external faults, so that internal and external fault analysis of the equipment is particularly necessary.
At present, the analysis of the abnormity of the secondary circuit of the relay protection equipment through the internal and external fault recording of the protection equipment area mainly depends on relay protection operation maintenance personnel, but the internal and external fault recording data volume of the relay protection area is huge, the secondary circuit is in poor contact, but each external fault does not have corresponding analog quantity or switching value, but sometimes does not exist, and omission possibly occurs through manual analysis; currently, mainstream fault recording analysis software is not purposefully developed for secondary circuit abnormity analysis, and a large amount of manual auxiliary calculation is required when detailed analysis such as phase sequence, current polarity and power direction is performed, so that the efficiency is not high.
SUMMERY OF THE UTILITY MODEL
The utility model discloses technical problem to among the background art provides an unusual intelligent monitoring device of relay protection secondary circuit, solves and relies on artifical analysis relay protection secondary circuit defect work load big, produce the defect of omitting easily at present, can effectively discover the hidden defect in protection equipment secondary circuit, improves the reliability of protection equipment operation.
In order to achieve the above object, the utility model provides an unusual intelligent monitoring device of relay protection secondary circuit, include:
the wave recording initialization unit is used for reading a wave recording starting message of the relay protection equipment and/or the fault wave recorder when an internal fault and an external fault of a zone occur, processing and extracting a wave recording signal in the wave recording message;
a loop abnormity monitoring unit for judging the abnormity type of the secondary loop of the protection device according to the recording signal;
an analysis result output unit for prompting and alarming the abnormal type;
the output end of the recording initialization unit is connected with the input end of the loop abnormity monitoring unit, and the output end of the loop abnormity monitoring unit is connected with the input end of the analysis result output unit.
Preferably, the wave recording initialization unit is connected with and reads a wave recording starting message of the relay protection device and/or the fault wave recorder through a manual button or an automatic receiving port.
Preferably, the secondary loop anomaly types at least include: the phase sequence is connected reversely, the polarity is connected reversely and the zero sequence circuit is broken.
Preferably, the device is further provided with a human-computer interaction display interface for displaying the generated result report.
The utility model provides an abnormal intelligent monitoring device of a relay protection secondary circuit, which is provided with a recording initialization unit, a circuit abnormal monitoring unit and an analysis result output unit, and prompts and alarms the abnormal analysis result through a man-machine display interface; the starting recording real-time automatic analysis and judgment based on the protection equipment can reduce the dependence on human factors, can find the hidden defect of the secondary circuit of the protection equipment, and improves the operation reliability of the protection equipment.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic structural view of an abnormal intelligent monitoring device of a relay protection secondary circuit in a first preferred embodiment of the present invention;
fig. 2 is a sectional view of the wave recording in the first preferred embodiment of the present invention.
The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that, if directional indications (such as upper, lower, left, right, front and rear … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
The utility model provides an intelligent monitoring device for the abnormity of a relay protection secondary circuit;
in a preferred embodiment of the present invention, as shown in fig. 1, the method includes: a recording initialization unit 100 for reading the start recording message of the relay protection device and/or the fault recorder when the internal and external faults occur, processing and extracting the recording signal in the recording message; a loop anomaly monitoring unit 200 for determining the type of anomaly of the secondary loop of the protection device according to the recording signal, the anomaly type comprising: the phase sequence is connected reversely, the polarity is connected reversely and the zero sequence circuit is broken; an analysis result output unit 300 for prompting and alarming the type of the abnormality; the output end of the recording initialization unit is connected with the input end of the loop abnormity monitoring unit, and the output end of the loop abnormity monitoring unit is connected with the input end of the analysis result output unit.
In this embodiment, the wave recording initialization unit is connected with and reads a wave recording starting message of the relay protection device and/or the fault wave recorder through a manual button or an automatic receiving port;
the wave recording initialization unit 100 is based on the starting wave recording of relay protection equipment or a fault wave recorder when a fault occurs inside and outside a zone. When the relay protection equipment experiences faults inside and outside a district, all relevant relay protection equipment or fault oscillographs of a transformer substation can start wave recording at the same time, and the hidden defects of a corresponding secondary circuit can be more obviously expressed due to the fact that the voltage and current of a primary system are changed violently during the fault. Therefore, the secondary circuit defect of the relay protection equipment can be found clearly by analyzing the fault recording file of the relay protection equipment or the fault recorder when the inside and the outside of the area have faults for many times.
In this embodiment, there are two ways for the intelligent monitoring device for monitoring the abnormality of the secondary circuit of the relay protection to read and analyze the recording data:
1) manually reading off-line, namely manually importing waveforms of a plurality of protective devices and a fault recorder, and triggering once wave recording data analysis in a button control mode; because of the sensitivity of the processing wave recording data to the time scale, the imported data waveform is required to be triggered for the same fault, and the generation time of the waveform is ensured to be within a certain error range;
2) automatic online reading: when an in-zone or out-of-zone fault occurs, the protection equipment of the related electrical elements and the fault recorder are started and trigger wave recording, and the in-station fault recorder calls the wave recording data in a period of time after the fault occurs and stores the data in the corresponding file directory. Scanning the corresponding file directory once at certain scanning delay intervals (such as 1 minute, set to be settable), and automatically triggering once wave recording data analysis after the wave recording data is found to be updated.
In this embodiment, the recording files of the plurality of electrical components are simultaneously read and analyzed in parallel according to the correspondence of the recording start time marks, and are in one-to-one correspondence and comparison according to the names of the electrical components.
In the embodiment, a wave recording file of the relay protection device or the fault wave recorder is input into a COMTRADE format, and a fault recording band and a normal recording band in the wave recording file are automatically identified through waveform characteristics; FIG. 2 is a schematic diagram of a wave recording segmentation method, in which T is0Corresponding to normal recording band, two Ts1Corresponding to the fault recording band, T2And T2The/2 corresponds to a normal recording band, 1 represents the 1 st start, and 2 represents the 2 nd start;
in this embodiment, the apparatus is further provided with a human-computer interaction display interface (display) for displaying the generated result report.
In this embodiment, the processor in the device may be composed of an integrated circuit, for example, a single packaged integrated circuit, or may be composed of a plurality of integrated circuits packaged with the same function or different functions, and includes one or a combination of a central processing unit, a microprocessor, a digital processing chip, a graphics processor, and various control chips. The processor utilizes various interfaces and line connections to access various components, and executes various functions of abnormal intelligent monitoring of the relay protection secondary circuit and data processing by running or executing programs or units stored in the memory and calling data stored in the memory.
The memory is used for storing program codes and various data, is installed in the abnormal intelligent monitoring device of the relay protection secondary circuit, and realizes high-speed and automatic access of the program or the data in the running process. The memory includes read-only memory, random access memory, programmable read-only memory, erasable programmable read-only memory, one-time programmable read-only memory, electronically erasable rewritable read-only memory, compact disk read-only or other optical disk storage, magnetic disk storage, tape storage, or any other medium capable of being used to carry or store data and which is readable by a computer.
The above only be the preferred embodiment of the utility model discloses a not consequently restriction the utility model discloses a patent range, all are in the utility model discloses a conceive, utilize the equivalent structure transform of what the content was done in the description and the attached drawing, or direct/indirect application all is included in other relevant technical field the utility model discloses a patent protection within range.
Claims (4)
1. The utility model provides an unusual intelligent monitoring device of relay protection secondary circuit which characterized in that includes:
the wave recording initialization unit is used for reading a wave recording starting message of the relay protection equipment and/or the fault wave recorder when an internal fault and an external fault of a zone occur, processing and extracting a wave recording signal in the wave recording message;
a loop abnormity monitoring unit for judging the abnormity type of the secondary loop of the protection device according to the recording signal;
an analysis result output unit for prompting and alarming the abnormal type;
the output end of the recording initialization unit is connected with the input end of the loop abnormity monitoring unit, and the output end of the loop abnormity monitoring unit is connected with the input end of the analysis result output unit.
2. The intelligent monitoring device for the secondary circuit abnormality of the relay protection according to claim 1, wherein the wave recording initialization unit reads a start wave recording message of the relay protection device and/or the fault wave recorder through a manual button or an automatic receiving port.
3. The intelligent monitoring device for relay protection secondary circuit abnormality according to claim 1, wherein the secondary circuit abnormality type at least includes: the phase sequence is connected reversely, the polarity is connected reversely and the zero sequence circuit is broken.
4. The intelligent monitoring device for the secondary circuit abnormity of the relay protection according to claim 1, wherein a human-computer interaction display interface is further arranged for displaying the generated result report.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920540381.0U CN210514465U (en) | 2019-04-19 | 2019-04-19 | Intelligent abnormal monitoring device for relay protection secondary circuit |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920540381.0U CN210514465U (en) | 2019-04-19 | 2019-04-19 | Intelligent abnormal monitoring device for relay protection secondary circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113848471A (en) * | 2021-10-20 | 2021-12-28 | 南京理工大学 | Fault intelligent positioning method and system for relay protection system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113848471A (en) * | 2021-10-20 | 2021-12-28 | 南京理工大学 | Fault intelligent positioning method and system for relay protection system |
| CN113848471B (en) * | 2021-10-20 | 2024-04-05 | 南京理工大学 | Intelligent fault positioning method and system for relay protection system |
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Effective date of registration: 20210914 Address after: 530021 the Guangxi Zhuang Autonomous Region Qingxiu District of Nanning Hui Chun Road No. 3 Patentee after: EXTRA-HIGH VOLTAGE POWER TRANSMISSION (NANJING) CORPORATION OF CHINA SOUTHERN POWER GRID Co.,Ltd. Address before: 530028 No. 3, Huichun Road, Nanning City, Guangxi Zhuang Autonomous Region Patentee before: EXTRA-HIGH VOLTAGE POWER TRANSMISSION (NANJING) CORPORATION OF CHINA SOUTHERN POWER GRID Co.,Ltd. Patentee before: GUANGZHOU YEHENG TECHNOLOGY Co.,Ltd. |