KR20160061757A - Universal sensor node platform based on iec 61850 - Google Patents

Abstract

The present invention is a universal sensor node platform for an electric power substation CMD (condition monitoring and diagnosis) and, more specifically, to a universal sensor node platform which can be used universally for a sensor node and a terminal node on IEC 61850-90-3. According to the present invention, the sensor node platform has all of the terminal node setting information and sensor node setting information on IEC 61850-90-3, and a selected node from the sensor node and the terminal node is set by using the set information, thereby being universally used for the sensor node and the terminal node on IEC 61890-3.

Description

[0001] The present invention relates to a universal sensor node (IEC)

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a universal sensor node platform for Condition Monitoring and Diagnosis (CMD) of a substation, and more particularly to a universal sensor node platform for sensor nodes and terminal nodes on IEC 61850-90-3 will be.

Power infrastructure mainly consists of power devices such as transformers and circuit breakers. By handling large power, it is placed in a very harsh operating environment condition, and failure failures usually result in a large loss cost.

Therefore, it is required that the administrator conducts the CMD continuously using the information about the risk factors before the failure occurs.

Various predictive maintenance methods such as gas analysis and on-line monitoring devices have been applied to existing power equipment, but it is too expensive and the effect is vague and it is necessary to upgrade the prediction means. However, according to the manufacturer specifications, various complicated IT devices have caused interoperability difficulties.

As a means of solving such problems, the solution through the introduction of the universal sensor platform and the standardization is being discussed.

The universal sensor node platform finds common elements and universally applies them to pursue interoperability, functionality, efficiency, applicability, and economy at the same time. This universalization is possible because, in the field of substation monitoring and diagnosis (CMD), high-voltage-power extreme environment, which is an environmental element of the sensor node, and function of acquiring and transmitting detection information, which is a functional element, are commonly required in all sensor nodes.

On the other hand, if we look at the trends of standardization of the Smart Grid by detailed fields, it tends to follow the decision of standardization organizations such as IEC / ISO and IEEE. The CMD field is the IEC TC 57 WG 10 International Standardization Conference Korea has led the need for standardization, approved by IEC, and assigned to IEC 61850-90-3, so that standardization of the state monitoring and diagnosis (CMD) field is under way.

1 is a communication system diagram proposed by the IEC 61850-90-3 standard, which is an international standard for performing CMD. The sensor node 100 according to IEC 61850-90-3 acquires data from the connected sensor, generates a value corresponding to the transducer logical node (T LNs) from the sensor node 100, and transmits the generated value to the IEC 61850 terminal 300 do. The value corresponding to the transducer logical node is limited to the numerical value of the sensor measurement value, the measurement rate, etc., and does not include the alarm or the standardized result corresponding to the super vision node (S LNs). According to the IEC 61850-90-3 TR document, the communication means 200 between the sensor node and the IEC 61850 terminal may adopt any necessary communication method such as Zigbee, Bluetooth, and wired. The IEC 61850 terminal 300 combines the values associated with the self-generated super vision node and the values corresponding to the transducer logical nodes that have arrived from the sensor node 100 into IEC 61850-7-4 And transfers it to the regional unit control center 500 through the IEC 61850 Ethernet gate 400.

However, IEC 61850 is a standardization project that started in 1995 and has been evolving through several revisions, and it has no unexpected characteristics. In fact, in IEC 61850-90-3, the communication method between the sensor node and the IEC 61850 terminal is also provided by IEEE 1451, and the possibility of introducing wireless communication between the IEC 61850 terminal node and the IEC 61850 Ethernet gate is also considered. In this situation, the introduction of the function of the IEC 61850 terminal node to the universal sensor node platform is valid in preparation for the possibility of diversifying the communication method between the 61850 terminal node and the IEC 61850. In addition, the state monitoring and diagnostic equipment in the vicinity of electric power equipment has the environmental factors such that it is easy to supply and receive electricity, and the power consumption for computation and communication is not limited, and the communication protocol of IEC 61850, The technical reason that the MMS protocol can be implemented in a commercial wireless LAN system also serves as a reason for introducing the function of the IEC 61850 terminal node to the universal sensor node platform.

The universal sensor node platform in accordance with IEC 61850-90-3 in the field of condition monitoring (CMD) is to provide a communication system between the sensor node and the IEC 61850 terminal and to ensure compatibility with other IEC 61850 electronic devices Should approach.

In this situation, the universal sensor node platform is not only a discrete technology that implements the state monitoring and diagnosis (CMD) field according to the communication scheme proposed by the IEC 61850-90-3 standard, It has the character of standard to be observed.

1. IEC 61850-90-3 DTR

Accordingly, it is an object of the present invention to provide a universal sensor node platform usable for sensor nodes and terminal nodes on IEC 61850-90-3.

Other objects of the present invention will become readily apparent from the following description of the embodiments.

In order to accomplish the above object, the IEC 61850-based universal sensor node platform according to a preferred embodiment of the present invention is configured to operate as a sensor node on the IEC 61850, A storage unit for storing second setting information; An acquisition unit for acquiring a sensing value from a sensor connected in a predetermined manner; A communication unit for communicating with an upper node in a predetermined communication standard; And a control unit for generating the logical node information for the acquired data using any one of the setting information selected from the first setting information and the second setting information and transmitting the generated logical node information to the upper node through the communication unit can do.

Here, the first setting information may include a data structure of at least one of a plurality of transducer logical nodes (T LNs) and supervisory logical nodes (S LNs) defined in IEC 61850.

The communication unit may be equipped with any standard of Ethernet or wireless LAN as a communication standard.

In addition, the second setting information may include a data structure for at least one of a plurality of transducer logical nodes (T LNs) defined by IEC 61850.

In addition, the communication unit may be equipped with any one of PAN, Ethernet, and wireless LAN as a communication standard.

The first communication module of the plurality of communication modules is equipped with any one of Ethernet and wireless LAN standards, and the second communication module of the plurality of communication modules is a PAN standard And the first setting information and the second setting information may include information for selecting any one of the plurality of communication modules as a communication module for transmitting the logical node information.

Also, when generating the logical node information for the acquired data using the first setting information, the first setting information may be information for selecting only the communication module on which the standard of Ethernet or wireless LAN is installed .

As described above, according to the present invention, the sensor node platform has both the terminal node setting information and the sensor node setting information on the IEC 61850-90-3 and uses the setting information to set the selected node among the sensor node and the terminal node To be used universally for sensor nodes and terminal nodes on IEC 61850-90-3.

1 is a diagram illustrating a communication system proposed by the IEC 61850-90-3 standard, which is a general international standard for a power facility CMD.
2 is a simplified diagram illustrating an internal configuration of an IEC 61850-based universal sensor node platform according to a preferred embodiment of the present invention.
Figure 3 shows the logical nodes of TUHF (UHF Sensor) and SPDC (Partial Discharge) in IEC 61850-90-3.
Figure 4 shows an IEC 61850 data structure.

While the invention is susceptible to various modifications and alternative forms, specific embodiments thereof are shown by way of example in the drawings and will herein be described in detail. It should be understood, however, that the invention is not intended to be limited to the particular embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

Like reference numerals are used for like elements in describing each drawing. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

The terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another.

For example, without departing from the scope of the present invention, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component.

And / or < / RTI > includes any combination of a plurality of related listed items or any of a plurality of related listed items.

It is to be understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, .

On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between.

The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention.

The singular expressions include plural expressions unless the context clearly dictates otherwise. In the present application, the terms "comprises" or "having" and the like are used to specify that there is a feature, a number, a step, an operation, an element, a component or a combination thereof described in the specification, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the contextual meaning of the related art and are to be interpreted as either ideal or overly formal in the sense of the present application Do not.

First, an IEC 61850-based universal sensor node platform to which the present invention is applied will be described with reference to FIG. 2 attached hereto. The universal sensor node platform is a platform that can perform the role of a sensor node for performing CMD by mounting various sensor modules that sense voltage, temperature, pressure, and PD discharge. IEC 61850-based universal sensor node platform 1 refers to the platform of the sensor node 100 in the communication scheme proposed by the IEC 61850-90-3 standard, which is a general international standard.

The IEC 61850-based universal sensor node platform according to the preferred embodiment of the present invention includes a storage unit 110, an acquisition unit 120, a communication unit 130, and a control unit 140.

In the process described below, the transducer logical nodes (T LNs) are associated with the IEC 61850-90-3 standard with respect to sampled values directly measured by the sensor, sampling rate, external equipment health, , The supervision logical node (S LNs) refers to a logical node defined in relation to a measured value, a warning, an alarm, a warning level, an alarm level, Means the logical node specified in IEC 61850-90-3 standard.

3 is a table of logical nodes for a logical node (TUHF) and a partial discharge monitoring diagnostic (SPDC) for a UHF sensor used in PD monitoring modeling in the IEC 61850-90-3 standard. Here, the transducer logical node corresponds to UhfSv, which is a data op- eration for UHF signal, EEhealth, which is a data object representing the state of external equipment, and AcuPasch, which represents voice level.

However, in assigning a logical node to a memory in a universal sensor node platform according to the present invention, the IEC 61850 system configuration program (IED Configurator) and the IED configuration program (IED Configurator) And refers to the CID file and allocates it to the memory in accordance with the IEC 61850 basic information model as shown in FIG. As shown in FIG. 4, the IEC 61850 data structure has a hierarchical structure such as PD (Physical Device) -LD (Logical Device) -LN (Logical Node) -Data Class-Data Attribute, Lt; RTI ID = 0.0 > LD < / RTI > An LD is an entity that represents a device installed in a substation, and can be the same information as some relays. The PD and LD can be set arbitrarily by the system that installs the sensor node, and in case of the condition monitoring diagnosis (CMD), it is the information that designates the location where the IEC 61850 terminal belongs. LN is an entity representing a set of typical substation functions, and in the case of IEC 61850-based condition monitoring diagnostics (CMD), it mainly uses the logical nodes defined in IEC 61850-90-3. The data class is defined in IEC 61850-7-4 and is a variable that stores the value of LN.

3 and 4 are merely examples, and the type of the logical node used in the universal sensor node platform according to the present invention is not limited to the logical load shown here.

The storage unit 110 is a device for storing programs and commands defined by the first setting information 111 and the second setting information 112. [

The first setting information 111 may be a program capable of performing the functions of the IEC 61850 terminal node 300 proposed by the IEC 61850-90-3 standard.

According to the IEC 61850 standard, the IEC 61850 terminal node 300 assigns the sensed value obtained from the sensor to the transducer logical node, generates the value of the super vision node according to the process defined in IEC 61850-90-3, It shall have the capability to communicate with the IEC 61850 Ethernet gate in a manner consistent with the 61850 communication protocol.

Accordingly, when the data value related to the transducer logical node is generated in the sensor module or the like and the value is received through the acquisition unit 140, the first setting information 111 is stored in the form of a transducer logical node, It can be configured as a series of programs that generate the results of state monitoring diagnostics (CMD) corresponding to the node values and store them in the form of supervision nodes, and some or all of the IEC 61850 communication protocols.

As shown in FIG. 5, the IEC 61850 communication protocol includes Sampled Values, Generic Object Oriented Substation Event (GOOSE), Manufacturing Messaging Specification (MMS), and Generic Substation Status Event (GSSE) According to the standard, Ethernet (ISO / IEC 8802-3) must be provided. However, when the IEC 61850 communication protocol is limited to the functions defined in IEC 61850-90-3, only the MMS (Manufacturing Messaging Specification) in which the communication protocol is performed based on TCP / IP is used. Therefore, LAN can also be performed. Accordingly, when only MMS is performed among the IEC 61850 communication protocols, the first configuration information 111 is included in a program implemented in a session layer, a presentation layer, and an application layer in the OSI 7 layer Or a program for managing Sampled Values and the protocol corresponding to GOOSE using the IEC 61850 full protocol may be included in the first setting information 111.

The second setting information 112 may be a program capable of performing the function of the sensor node 100 according to the IEC 61850-90-3 standard.

When performing the function of the sensor node 100 according to IEC 61850-90-3, if a data value related to the transducer logical node is generated in the sensor module or the like, this value is transmitted to the IEC 61850 terminal 300 in an arbitrary communication standard Function.

Thus, the second configuration information 112 comprises a setting value that determines to execute any communication protocol predetermined to transmit the value of the transducer logical node to the IEC 61850 terminal 300. The optional communication protocol may be a personal area network (e.g., Zigbee, Bluetooth), infrared communication, wired (e.g., Ethernet), wireless LAN (e.g., WiFi And so may be determined in consultation between the company that manufactures the IEC 61850 terminal 300 and the company that manufactures the sensor node 100.

The acquisition unit 120 may be determined depending on the type of the sensor module or the sensing value collection method as an interface for acquiring the sensing value of the sensor. In the case of a method in which a sensor is directly connected to a universal sensor node platform, it may be a simple wire connection, and in a case of receiving a sensing value corresponding to a transducer logical node from another sensor node, Sensing value acquisition is possible only for the communication method.

The communication unit 130 is a device including a plurality of communication modules capable of performing various wired and wireless communication standards such as IEEE 802.11 series wireless LAN, Ethernet, PAN such as Bluetooth and Zigbee, and includes at least one TCP / And a communication module capable of performing the communication. In particular, in order to perform the function of the first setting information 111, it is necessary to implement the MMS (Manufacturing Messaging Specification) protocol of IEC 61850 as described above, so that it is necessary to mount either the Ethernet or the wireless LAN have.

The control unit 140 refers to a kind of central processing unit having serial and parallel ports. A microprocessor as a central processing unit, a memory in which an operating system program for operating a program corresponding to the first setting information 111 and the second setting information 112 stored in the storage unit 110 is stored .

When performing the function of the first setting information 111, when Ethernet or wireless LAN is not selected among various communication modules of the communication unit 130, it is necessary to generate a signal indicating that installation is impossible, It may be a program including a restriction that the Ethernet or the wireless LAN itself is selected.

The universal sensor node platform can be configured and used by either the sensor node manufacturer or the installer by using either the sensor node or the terminal node using the sensor node configuration information and the terminal node configuration information held by the platform. Alternatively, the universal sensor node platform may be configured as either a sensor node or a terminal node using sensor node configuration information and terminal node configuration information according to an external command (e.g., command from an upper node).

100: sensor node according to IEC 61850-90-3
110:
111: First setting information
112: Second setting information
120:
130:
140:
200: Means of communication between sensor nodes and IEC 61850 terminal nodes
300: IEC 61850 terminal
400: IEC 61850 Ethernet gate
500: Regional Control Center

Claims (7)

A storage unit for storing first setting information for setting to operate as a terminal node on IEC 61850 and second setting information for setting to operate as a sensor node on IEC 61850;
An acquisition unit for acquiring a sensing value from a sensor connected in a predetermined manner;
A communication unit for communicating with an upper node in a predetermined communication standard; And
And a control unit for generating the logical node information for the acquired data using any one of the setting information selected from the first setting information and the second setting information and transmitting the generated logical node information to the upper node through the communication unit IEC 61850 based universal sensor node platform. The method according to claim 1,
Wherein the first configuration information includes a data structure for a plurality of T LNs (transducer logical nodes) and a supervisory logical node (S LNs) defined in IEC 61850. The IEC 61850-based universal sensor node platform . 3. The method of claim 2,
Wherein the communication unit is equipped with any one of Ethernet or wireless LAN as a communication standard, and the IEC 61850-based universal sensor node platform. The method according to claim 1,
Wherein the second configuration information includes a data structure for at least one of a plurality of transducer logical nodes (T LNs) defined by IEC 61850. The IEC 61850- 5. The method of claim 4,
Wherein the communication unit is equipped with any one of PAN, Ethernet, and wireless LAN as a communication standard, and is based on IEC 61850 based universal sensor node platform. The method according to claim 1,
Wherein the communication unit includes a plurality of communication modules,
Wherein the first communication module among the plurality of communication modules is mounted with any one of Ethernet and wireless LAN standards,
Wherein the second communication module of the plurality of communication modules is equipped with a PAN standard,
Wherein the first setting information and the second setting information include information for selecting any one of the plurality of communication modules as a communication module for transmitting the logical node information based on the IEC 61850 based universal sensor node platform. The method according to claim 6,
When generating the logical node information for the acquired data using the first setting information,
Wherein the first setting information is information for selecting only a communication module on which the standard of Ethernet or wireless LAN is installed.

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