A method for signal classification and hooking of a protection device

Abstract

The application discloses a kind of protection device signal classification and method of hanging, belong to the technical field of power system relay protection, the protection device signal classification and method of hanging, comprising the following steps: obtaining the protection signal provided by protection device, the protection signal is hung to corresponding primary equipment, and matches grid resource service middle station resource ID;Read the measurement name of the protection signal, according to the keyword mapping table, the measurement name is classified, and the classification result is mapped to grid resource service middle station, to obtain the signal type corresponding to the protection signal in grid resource service middle station.The relationship between the protection signal and primary equipment is hung, and the protection signal is classified, which greatly improves the processing efficiency, solves the problem of protection signal hanging main device and protection signal telesignalling data classification in centralized control system.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of power system relay protection technology, in particular to a method for protection device signal classification and connection. BACKGROUND

[0002] In the safety III area of the new generation power grid centralized control system, the protection signals provided by the protection device lack type classification and association with other primary devices. Therefore, if the telemetry data of the protection device in the centralized control system is to be transmitted to the power grid resource business platform, the relationship between the protection device and the primary device needs to be manually associated, the protection signals need to be classified, and then mapped to the power grid resource business platform, and finally assembled into a complete data for transmission and uploading.

[0003] However, 70%-80% of the telemetry data are protection device signal data, which is a large amount of data. The manual classification and summary method is inefficient, has a small coverage, is prone to errors, has a high maintenance cost, and is not suitable for promotion.

[0004] It should be noted that the information disclosed in the background section of the present application is only intended to deepen the understanding of the general background of the present application, and should not be regarded as acknowledging or implying in any form that the information constitutes prior art known to those skilled in the art. SUMMARY

[0005] The purpose of the present application is to provide a method for protection device signal classification and connection to solve the problem of low efficiency of manual classification and summary.

[0006] To solve the above technical problems, the present application provides a method for protection device signal classification and connection, comprising the following steps:

[0007] Obtain the protection signals provided by the protection device, connect the protection signals to the corresponding primary device, and match the resource ID of the power grid resource business platform;

[0008] Read the measurement name of the protection signal, classify the measurement name according to the keyword mapping table, map the classification result to the power grid resource business platform to obtain the corresponding signal type of the protection signal in the power grid resource business platform.

[0009] Preferably, after obtaining the protection signals provided by the protection device, the key words in the protection signal name are extracted to distinguish the type of the primary device to which the protection signal needs to be connected.

[0010] Preferably, according to the type of the primary device corresponding to the protection signal and the station, voltage level and interval to which it belongs, the corresponding primary device is searched and connected according to the connection logic.

[0011] Preferably, when multiple primary devices are present, the closest one is selected for connection.

[0012] Preferably, the connection logic comprises:

[0013] The protection signals related to busbars, transformers, capacitive reactance, mutual inductors, arc-extinguishing devices, lines and compartments are connected to the corresponding primary devices, and if not found, connected to the corresponding circuit breakers.

[0014] The protection signals related to public monitoring devices and AC / DC systems are connected to the substation.

[0015] The protection signals related to bypasses, busbar differential, small current line selection and low-frequency load shedding are connected to the busbar.

[0016] The protection signals containing the word "standby" and not found corresponding load and line are connected to the corresponding circuit breakers.

[0017] Preferably, after the protection signal is connected to the corresponding primary device, the connection relationship between the protection signal and the corresponding primary device is established and saved.

[0018] Preferably, the measurement name is classified according to the keyword mapping table, which comprises: extracting the keyword in the measurement name, classifying the measurement name according to the keyword mapping table, and obtaining the signal type to which the protection signal belongs.

[0019] Preferably, the signal type of the protection signal is converted into the signal type corresponding to the grid resource business center station using the signal type mapping table, and the corresponding center station measurement point English name of the protection signal in the grid resource business center station is obtained.

[0020] Preferably, it also includes: extracting the signal description of the protection signal and classifying it to obtain the measurement type of the protection signal.

[0021] Preferably, it also includes: associating and summarizing the grid resource business center station resource ID, measurement type and center station measurement point English name of the protection signal.

[0022] In the method for classifying and connecting protection device signals provided by the application, the relationship between the protection signal and the primary device is connected, and the protection signal is classified, which greatly improves the processing efficiency and solves the problems of connecting the protection signal to the main device and classifying the protection signal remote signal data in the centralized control system. BRIEF DESCRIPTION OF DRAWINGS

[0023] Those skilled in the art will understand that the provided drawings are for better understanding of the application, and do not constitute any limitation on the scope of the application. Among them:

[0024] Figure 1 is an execution architecture diagram of an embodiment of the present application. DETAILED DESCRIPTION

[0025] In order to make the objects, advantages and features of the present application more clearly, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that all the drawings are very simplified and not drawn in proportion, and are only used to facilitate and clearly assist the purpose of describing the embodiments of the present application. In addition, the structures shown in the drawings are often a part of the actual structures. In particular, different proportions are sometimes used in the drawings to show different focuses.

[0026] As used in the present application, the singular forms "a", "an" and "the" include plural referents, the term "or" is generally used in the sense of "and / or", the term "several" is generally used in the sense of "at least one", the term "at least two" is generally used in the sense of "two or more", and in addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second", "third" can explicitly or implicitly include one or at least two of the features, the term "proximal" is generally the end close to the operator, the term "distal" is generally the end close to the patient, "one end" and "the other end" and "proximal" and "distal" generally refer to two parts corresponding to each other, which not only includes the end point, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication or interaction relationship between two elements. In addition, as used in the present application, a component is provided in another component, which generally only indicates that there is a connection, coupling, cooperation or transmission relationship between the two components, and the two components can be directly or indirectly connected, coupled, cooperated or transmitted through an intermediate component, and cannot be understood as indicating or implying the spatial positional relationship between the two components, i.e. one component can be in any orientation inside, outside, above, below or one side of another component, unless the content is otherwise explicitly indicated. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0027] The inventor finds that when uploading the protection device signal, the relationship between the protection device and the main device or primary device needs to be connected by manual association, and the corresponding power grid resource business center resource ID is obtained; then the signal type is classified manually to find the corresponding signal type in the power grid resource business center. There is a lack of intelligent processing method and technology for the data carried by the protection signal in the market, and the relationship between the protection device and the main device is mostly connected by manual association to assemble a complete data.

[0028] Based on this, the core idea of the present application is to quickly connect the relationship between the protection signal and the primary device and classify the protection signal, and 200,000 data can be processed within 30 minutes, greatly improving the processing efficiency and solving the problems of connecting the main device of the protection signal of the centralized control system and classifying the remote signal data of the protection signal.

[0029] Specifically, please refer to Figure 1 , which is a schematic diagram of an embodiment of the present application. As shown in Figure 1 , a protection device signal classification and connection method comprises the following steps:

[0030] S1: Establishing a primary device connection relationship, obtaining a protection signal provided by a protection device, connecting the protection signal to a corresponding primary device, and matching a power grid resource business center resource ID. The protection signal is connected to the primary device or main device, the relationship between the protection signal of the centralized control system protection device and the primary device is established, so as to find the power grid resource business center resource ID, which is used for the metering center to identify the data belonging to the account.

[0031] S1.1: Matching the primary device type to which the protection signal belongs, after obtaining the protection signal provided by the protection device, the key words in the protection signal name are extracted to distinguish the primary device type to which the protection signal needs to be connected. It can be understood that the device type is preliminarily extracted according to the key words in the protection signal name, for example, if the name contains "arc extinction", "transformer", "bus", "line", "road", "return", "switch", "ground", the corresponding primary device type can be distinguished, and a mapping table of the name key words of a protection signal and the primary device type is given:

[0032] Table 1: Mapping table of name key words and primary device type

[0033]

[0034]

[0035] S1.2: The first device is connected, and the corresponding first device is retrieved according to the type of the protection signal, the station, the voltage level, and the interval to which the protection signal belongs, and the connection is made according to the connection logic. When multiple first devices are found during the connection of the corresponding first device, the closest first device is selected for connection. The first device is connected according to the topology of the protection signal, and the corresponding first device is retrieved according to the station, the voltage level, the interval, and the key information extracted from the name of the protection signal. The connection logic includes:

[0036] The protection signal related to the bus, transformer, capacitor, mutual inductor, arc extinguishing device, line, and interval is connected to the corresponding first device, and if not found, it is connected to the corresponding circuit breaker.

[0037] The protection signal related to the public measurement and control device and the AC / DC system is connected to the substation.

[0038] The protection signal related to the bypass, bus differential, small current line selection, and low-frequency load shedding is connected to the bus.

[0039] The protection signal containing the word "to be used" and not finding the corresponding load and line is connected to the corresponding circuit breaker.

[0040] S1.3: Understandably, after connecting the protection signal to the corresponding first device, the connection relationship between the protection signal and the corresponding first device is established and saved, as shown in Table 2 below. The protection signal ID and the first device ID are saved as a record to establish the connection relationship. Since a protection device can send multiple protection signals and a first device can correspond to multiple protection signals, but a protection signal can only belong to one first device.

[0041] Table 2 Connection relationship table

[0042]

[0043]

[0044] S2: The protection signal is classified and mapped to the power grid resource business platform. The measurement name of the protection signal is read, the measurement name is classified according to the key word mapping table, the classification result is mapped to the power grid resource business platform, and the signal type corresponding to the protection signal in the power grid resource business platform is obtained. The protection signal carries measurement data, which needs to be classified and standardized to facilitate quick identification of the measurement type of the protection signal. In addition, the signal type of the protection signal needs to be classified based on the measurement name, the protection signal type needs to be converted, and the corresponding power grid resource business platform type needs to be obtained to facilitate the identification of the data type by the measurement center.

[0045] S2.1: sorting, extracting signal description of the protection signal, and classifying to obtain the measurement type of the protection signal.

[0046] In an embodiment, the measurement type of the protection signal is sorted and then entered into the automatic linkage program, which helps to improve the efficiency of program classification linkage. The classification of the measurement type of the protection signal is shown in Table 3 below. The main signal description in the protection signal is extracted and classified:

[0047] Table 3 Measurement type classification table

[0048]

[0049] S2.2: classifying the measurement name according to the keyword mapping table includes extracting the keyword in the measurement name, classifying the measurement name according to the keyword mapping table, and obtaining the signal type of the protection signal. When used for the first time, the keyword mapping table can be directly built. When the signal type of the protection signal is extracted from the keyword of the measurement name of the protection signal, the signal type of the protection signal is marked, the keyword mapping table of the signal type and the measurement name is summarized, and the keyword mapping table is manually checked and corrected. The results are gradually improved in accuracy. This work is a one-time work. After the checking is completed, the keyword mapping table formed can be used in different regions. The keyword mapping table is shown in Table 4 below.

[0050] Table 4 Keyword mapping table

[0051]

[0052] S2.3: mapping the protection signal type, using the signal type mapping table to convert the signal type of the protection signal into the corresponding signal type of the grid resource business center, and obtaining the corresponding English name of the center measurement point of the protection signal in the grid resource business center. According to the signal type of the protection signal and the signal type corresponding to the business center, a signal type conversion table is constructed. The signal type conversion table is used to obtain the corresponding English name of the center measurement point of the protection signal in the grid resource business center. The constructed signal type conversion table can be used in different regions, and the signal type conversion table can be checked and corrected during use. The signal type conversion table is shown in Table 5 below.

[0053] Table 5 Signal type conversion table

[0054] Serial number Protection device type Key word English name of mid-station measuring point 1 Bus protection Abnormality DevAlm 2 Bus protection Loss of action OpEx 3 Bus protection Bus interlink operation BusInterLink 4 Capacitor protection Remote operation press plate RemGoEna 5 Capacitor protection Abnormality DevAlm 6 Capacitor protection Trip DevProTrip 7 Station transformer protection GOOSE total alarm GOAlm 8 Station transformer protection GOOSE link interruption GOLinkDisc 9 Station transformer protection CT breakage CTBrk 10 High resistance protection SV sampling link interruption SVLinkDisc 11 High resistance protection PT breakage PTBrk 12 High resistance protection PT breakage CTAbn

[0055] S3: associating and summarizing the grid resource business center resource ID, measurement type and center measurement point English name of the protection signal.

[0056] The results of the above steps are summarized and merged to obtain a final relationship table, which contains protection signal measurement ID, protection signal measurement name, protection signal measurement type, protection signal ID, protection signal name, service center resource ID and service center measurement point English name, as shown in Table 6 below. The relationship table can reflect the various information of the protection signal and its mapping relationship in the service center in detail, facilitating quick retrieval and monitoring of faults. Further, the corresponding primary equipment name is placed in the relationship table.

[0057] Table 6 Final relationship table

[0058]

[0059] Using the method for classifying and connecting protection device signals provided by the present disclosure, the relationship between the protection signal and the primary equipment can be quickly connected, and the signal type can be classified. A data volume of 200,000 can be processed within 30 minutes, greatly improving efficiency and solving the problems of connecting the protection signal to the main equipment and classifying the protection signal remote signal data in the centralized control system.

[0060] The above description is only a description of the preferred embodiments of the present application, and does not limit the scope of the present application in any way. Any modification or change made by a person of ordinary skill in the art based on the above disclosure is within the protection scope of the technical solution of the present application.

Claims

1. A method of protection device signal classification and hitching, characterized in that, The method comprises the following steps: obtaining a protection signal provided by a protection device, attaching the protection signal to a corresponding primary equipment, and matching a resource ID in a power grid resource service center; reading a measurement name of the protection signal, classifying the measurement name according to a keyword mapping table, and mapping a classification result to the power grid resource service center to obtain a signal type corresponding to the protection signal in the power grid resource service center.

2. The method of protection device signal classification and hitching of claim 1, wherein, After obtaining the protection signal provided by the protection device, a keyword in the protection signal name is extracted to distinguish a type of primary equipment to which the protection signal needs to be attached.

3. The method of protection device signal classification and hitching of claim 2, wherein, According to the type of primary equipment corresponding to the protection signal, a station to which the primary equipment belongs, a voltage level to which the primary equipment belongs, and an interval to which the primary equipment belongs, the corresponding primary equipment is searched and attached according to attachment logic.

4. The method of protection device signal classification and hitching of claim 3, wherein, When multiple primary equipments are searched and attached, the closest primary equipment is selected and attached.

5. The method of protection device signal classification and hitching of claim 3, wherein, The attachment logic comprises: a protection signal related to a bus, a transformer, a capacitor and reactance, a mutual inductor, an arc-extinguishing device, a line, and an interval is preferentially searched for a corresponding primary equipment for attachment, and if not found, the protection signal is attached to a corresponding circuit breaker; a protection signal related to a public measurement and control device and an AC / DC system is attached to a substation; a protection signal related to a bypass, a bus differential, a small current line selection, and a low-frequency load shedding is attached to a bus; a protection signal containing the word "to be used" and not finding a corresponding load and line is attached to a corresponding circuit breaker.

6. The method of protection device signal classification and hitching of claim 1, wherein, After the protection signal is attached to the corresponding primary equipment, an attachment relationship between the protection signal and the corresponding primary equipment is established and saved.

7. The method of protection device signal classification and hitching of claim 1, wherein, Classifying the measurement name according to the keyword mapping table comprises: extracting a keyword in the measurement name, classifying the measurement name according to the keyword mapping table, and obtaining a signal type to which the protection signal belongs.

8. The method of protection device signal classification and hitching according to claim 7, characterized in that, A signal type mapping table is used to convert the signal type of the protection signal into a signal type corresponding to the power grid resource service center to obtain a corresponding English name of a center measurement point in the power grid resource service center.

9. The method of protection device signal classification and hitching of claim 8, wherein, Further comprising: extracting a signal description of the protection signal and classifying the signal description to obtain a measurement type of the protection signal.

10. The method of protection device signal classification and hitching of claim 9, wherein, Further comprising: associating and summarizing the resource ID of the protection signal in the power grid resource service center, the measurement type, and the English name of the center measurement point.

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