CN105447264A - Modeling method of information model of intelligent electronic device - Google Patents

Abstract

The invention relates to a modeling method of an information model of an intelligent electronic device. The modeling method is an object-oriented modeling method, and the information model established by it is a layered information model. It is composed of equipment, logical nodes, data objects and data attributes. The modeling method includes the following steps: (1), regard the entire intelligent electronic device as a physical equipment, and make the physical equipment include at least one server; (2), make the server include at least A logical device; (3), make the logical device include at least three logical nodes: there is and only one LPHD, one LNN0, and one or more functional logical nodes; (4), make the logical nodes include a series of data objects; (5) Make the data object have data attributes. This modeling method formulates a feasible intelligent electronic information model, combined with the SCD file of the intelligent station, realizes the visual display of fault diagnosis of the secondary virtual circuit of the intelligent substation.

Description

A modeling method for an intelligent electronic device information model

technical field

The invention belongs to the technical field of condition monitoring and condition maintenance of substation equipment, and relates to a modeling method of an information model suitable for fault diagnosis of a secondary circuit of an intelligent substation, in particular to a modeling method of an information model of an intelligent electronic device.

Background technique

In order to ensure the safe operation of power equipment, according to the operating status of power equipment, implement timely and effective maintenance, reduce maintenance costs, and reduce the life-cycle cost of substation automation systems, substation equipment condition monitoring and condition-based maintenance technology has become a research topic at home and abroad in recent years. hotspot.

Smart substation is one of the core goals of smart grid construction, and the key to realizing the smart substation is to realize the smart secondary equipment. The intelligentization of secondary equipment means that the secondary equipment realizes extensive online detection, and the equipment maintenance strategy "regular maintenance" is transitioned to "conditional maintenance". As the primary condition for realizing condition-based maintenance, the focus of condition monitoring is to closely monitor the status of equipment, understand the real-time status of equipment operation, and provide data support for equipment fault diagnosis and maintenance strategy formulation. Intelligent substations also clearly put forward the requirements for the status monitoring function of power equipment. However, in the implementation of condition-based maintenance, due to the single function of different online monitoring systems and inconsistent communication standards, the horizontal and vertical connections between equipment status information are not strong, and the collection and utilization of equipment status information is not sufficient. Difficult integration and inability to realize information sharing greatly restrict the development of condition-based maintenance technology.

The IEC61850 series standards provide modeling and structure standards for the substation automation system. Through the unified modeling of power equipment produced by different manufacturers, the interoperability between various intelligent electronic devices can be realized, and the purpose of information sharing can be achieved. Condition monitoring of equipment indicates a new research direction. The newly released second edition of IEC61850 has also modified and added a large number of sensors and logical nodes for status monitoring. Therefore, based on the latest IEC61850 standard, research on intelligent electronic device information modeling for network message recording and analysis devices, and realize different status monitoring systems The interoperability of network message recording and analysis devices achieves the purpose of information sharing and provides technical support for condition-based maintenance of power equipment.

Contents of the invention

The purpose of the present invention is to overcome the shortcomings in the prior art, and provide a modeling method for the information model of intelligent electronic devices. The modeling method formulates a feasible intelligent electronic information model, and realizes intelligent Visual display of fault diagnosis of substation secondary virtual circuit.

In order to achieve the above object, the present invention provides the following technical solution: a modeling method of an intelligent electronic device information model, the modeling method is an object-oriented modeling method, and the information model established by it is a layered information model, so The hierarchical information model is composed of physical devices, servers, logical devices, logical nodes, data objects and data attributes, and the modeling method includes the following steps:

(1) Take the entire intelligent electronic device as a physical device, so that the physical device includes at least one server;

(2), making the server include at least one logic device;

(3) Make the logical device include at least three logical nodes: there is and only one LPHD, one LNN0, and one or more functional logical nodes;

(4), making the logical node include a series of data objects;

(5) Make the data object have data attributes.

Further, wherein, the server of the physical device includes a common logic device and a message recording logic device; or, the server of the physical device includes a message recording unit logic device and a wave recording unit logic device, and the report The logical device of the document recording unit includes a public logical device and a message recording logical device, and the logical device of the wave recording unit includes a public logical device and a transient wave recording logical device; or, the server of the physical device includes a public logical device, a recording logical device Wave Logical Devices and Packet Logging Logical Devices.

Further, wherein, the functional logical nodes are divided according to the functions of the intelligent electronic device, so as to establish the logical node class of the intelligent electronic device, and the division principle of the functional logical nodes is as follows:

1) For the information describing the whole of the intelligent electronic device, form it into a corresponding logical node;

2) For the information describing the port of the intelligent electronic device, create a logical node instance for each port;

3) For the information describing the objects recorded by the intelligent electronic device, create a logical node instance for each recorded object.

Still further, the server has one access point to realize communication with external devices; or, the server has multiple access points to communicate with different layers of the substation through different access points.

The modeling method of the intelligent electronic device information model of the present invention has the following beneficial technical effects: the IEC61850 intelligent electronic device information model established by the modeling method is a network message recording and analyzing device for the network message recording and analyzing device networking system Provides a unified information model, realizes the interoperability between the substation system and the network message recording and analyzing device, the interoperability between the master station system and the substation system and the network message recording and analyzing device, and avoids information loss caused by protocol conversion .

Description of drawings

FIG. 1 is a schematic diagram of an information model established by using the method for modeling an intelligent electronic device information model of the present invention.

Fig. 2 is a schematic diagram of one logical device model.

Fig. 3 is a schematic diagram of another logical device model.

Fig. 4 is a schematic diagram of yet another logical device model.

detailed description

The present invention will be further described below in conjunction with the accompanying drawings and examples, and the contents of the examples are not intended to limit the protection scope of the present invention.

The invention relates to a modeling method of an intelligent electronic device information model of a network message record analysis device. This modeling method combines the development status of current network message recording and analysis devices, based on field practicability, and customizes or extracts corresponding data according to the needs of system monitoring and diagnosis. The model is universal and does not expand logical nodes and data types without authorization.

The modeling method is an object-oriented modeling method, and the information model established by it is a layered information model. The hierarchical information model is composed of physical devices, servers, logical devices, logical nodes, data objects and data attributes.

The modeling method of the intelligent electronic device information model of the present invention will be introduced in detail below. The modeling method includes the following steps:

Firstly, the entire intelligent electronic device is regarded as a physical device, and the physical device includes at least one server.

Second, make the server include at least one logical device. Of course, according to the difference of the network packet record analysis device, the logic devices included in it are different. specifically:

For a network packet record analysis device with only a packet record function, as shown in FIG. 2 , the server of the physical device includes a public logic device and a packet record logic device.

For the network message recording analysis device with message recording function and wave recording function in different independent hardware, as shown in Figure 3, the server of the physical device is made to include message recording unit logic equipment and wave recording unit logic equipment. Moreover, the logic device of the message recording unit includes a public logic device and a message recording logic device. Meanwhile, the logic device of the wave recording unit includes a public logic device and a transient state wave recording logic device. Moreover, when naming the intelligent electronic device name for the independent hardware network message recording and analysis device, the name of the intelligent electronic device recorded in the message and the name of the intelligent electronic device recorded in the wave recording should be the same, which is the name of the uniformly configured intelligent electronic device.

For the network message recording flight device with message recording function and wave recording function in the same hardware, as shown in Figure 4, the server of the physical device is made to include public logic equipment, wave recording logic equipment and message recording logic equipment.

In addition, in the present invention, the server can have an access point to realize communication with external devices. Of course, the server may also have multiple access points, and communicate with different layers of the substation through different access points.

Then, make the logical device include at least three logical nodes: there is and only one LPHD, one LNN0, and one or more functional logical nodes.

In the present invention, the functional logical nodes are divided according to the functions of the intelligent electronic devices, so as to establish the logical node classes of the intelligent electronic devices. The division principles of the functional logical nodes are: (1) for the information describing the whole of the intelligent electronic device, form a corresponding logical node; (2) for the information describing the port of the intelligent electronic device, create a logical node for each port Instance; (3) For the information describing the objects recorded by the intelligent electronic device, create a logical node instance for each recorded object.

Then, make the logical node include a series of data objects.

Finally, make the data object have a data attribute.

The model established by the intelligent electronic device information model modeling method of the present invention is shown in FIG. 1 .

The IEC61850 intelligent electronic device information model established by this modeling method provides a unified information model for the network message record analysis device of the network message record analysis device networking system, and realizes the substation system and network message record analysis. The interoperability of the devices, the interoperability between the main station system and the sub-station system and the network message recording and analysis device, avoids the information loss caused by the protocol conversion.

The above-mentioned embodiments of the present invention are only examples for clearly illustrating the present invention, rather than limiting the implementation of the present invention. For those of ordinary skill in the art, other changes or changes in different forms can be made on the basis of the above description. All the implementation manners cannot be exhaustively listed here. All obvious changes or variations derived from the technical solutions of the present invention are still within the protection scope of the present invention.

Claims (4)

1. A modeling method of an intelligent electronic device information model, the modeling method is an object-oriented modeling method, and the information model established by it is a layered information model, and the layered information model consists of physical equipment, Composed of servers, logical devices, logical nodes, data objects and data attributes, the modeling method includes the following steps: (1) Take the entire intelligent electronic device as a physical device, so that the physical device includes at least one server; (2), making the server include at least one logic device; (3) Make the logical device include at least three logical nodes: there is only one LPHD, one LNNO, and one or more functional logical nodes; (4), making the logical node include a series of data objects; (5) Make the data object have data attributes. 2. The modeling method of an intelligent electronic device information model according to claim 1, wherein the server of the physical device includes a common logic device and a message recording logic device; or, the server of the physical device includes a message A text recording unit logic device and a wave recording unit logic device, and the message recording unit logic device includes a common logic device and a message recording logic device, and the wave recording unit logic device includes a public logic device and a transient state wave recording logic device ; Or, make the server of the physical device include a public logical device, a wave recording logical device and a message recording logical device. 3. The modeling method of the intelligent electronic device information model according to claim 2, wherein the functional logical nodes are divided according to the functions of the intelligent electronic devices, thereby establishing logical node classes of the intelligent electronic devices, and the functional logical nodes The division principle is: 1) For the information describing the whole of the intelligent electronic device, form it into a corresponding logical node; 2) For the information describing the port of the intelligent electronic device, create a logical node instance for each port; 3) For the information describing the objects recorded by the intelligent electronic device, create a logical node instance for each recorded object. 4. The modeling method of intelligent electronic device information model according to claim 3, wherein, make described server have one access point, realize the communication with external equipment; Or, make described server have multiple access points, through Different access points communicate with different layers of the substation respectively.