CN117668076A - An adaptation method for custom object models of power equipment - Google Patents

Abstract

The invention discloses an adaptation method of a custom object model of power equipment, which belongs to the technical field of the Internet of things and comprises the following steps: and the object model is customized, object model information is synchronous, object model mapping definition, adaptive access and object model data output are carried out. The method can solve the problems of protocol difference, soft and hard development coupling, equipment island and data island of a plurality of heterogeneous power equipment, meet the flexible and standard access requirements of the power equipment, and support the data acquisition of the power equipment in the power grid business application.

Description

An adaptation method for custom object models of power equipment

Technical field

The invention belongs to the technical field of the Internet of Things, and in particular relates to an adaptation method for a customized object model of electric power equipment.

Background technique

In the context of low carbon, the power industry follows national development requirements and continues to develop in the direction of energy conservation and environmental protection. The power Internet of Things is also a key point in low carbon development.

With the gradual advancement of the power Internet of Things, the power industry has the characteristics of a large number of terminal equipment, complex industrial control protocols, and diverse business needs. Due to the variety of equipment types, the data formats and transmission protocols generated and transmitted by different devices are completely different, resulting in power IoT Networking faces difficulties in data collection.

Contents of the invention

The technical problem to be solved by the present invention is to overcome the above difficulties, define the object model, and adapt different power equipment to achieve effective management of data interaction.

In order to achieve the above objectives, the present invention provides a method for adapting a custom object model of electric power equipment. The technical solution is as follows:

An adaptation method for a custom object model of power equipment includes the following steps:

Step S1: Customize the physical model, digitally express the information of the power terminal equipment in a unified format, build a unified physical model standard data message format, and generate the physical model information of the equipment;

Step S2: Object model information is synchronized, and the object model information is provided to the power terminal equipment through a unified object model information interface;

Step S3: Obtain the data message format reported by the power terminal equipment, and determine whether the data message format is the same as the physical model standard data message format;

If the data message format is different from the object model standard data message format, the object model mapping rules are defined for the power terminal equipment, and the object model is generated based on the matching relationship between the data message format reported by the power terminal device and the object model information. Mapping rules, jump to step S4;

If the data message format is the same as the object model standard data message format, jump to step S5;

Step S4: Adaptation access: Adapt the power terminal equipment whose data message format is different from the object model standard data message format, and then jump to step S5. The adaptation includes protocol adaptation and data conversion adaptation. ;

Step S5: Output the object model data, store the object model data, update the object model information, and transfer it to the upper-level business system through a unified format.

Further, the step S1: Digitally express the power terminal in the Internet of Things in the object model customization, including describing all the information of the power terminal equipment as attributes, events and interfaces.

Further, attributes include static attributes and dynamic attributes of power equipment. Static attributes are attributes that will not change during the entire life cycle of the power equipment; dynamic attributes are attributes of data collected during the operation of the power equipment.

Furthermore, events are business information and alarm events actively reported by power equipment. The object model events are customized by setting event parameters. The event parameters include event identification, event name, and event type.

Furthermore, the interface is an interface for power equipment to receive control commands. It can be remotely called by authorized equipment and perform response or control operations. The object model interface can be customized by setting the parameters of the interface. The interface parameters include interface identification, interface name, interface description, interface Method name, interface parameters, and interface parameters.

Further, the object model information interface adopts an API interface.

Further, in step S2, the object model information provided to the power terminal equipment includes: the unique identifier of the object model, the attribute description of the device, the instruction service description and the message format, as well as the configuration information of the supported access protocol, including Protocol type, protocol address and access account key.

Further, in step S3, the data message format includes a message format of attribute value data and a message format of event reporting data.

Further, in step S4, the protocol adaptation specifically includes the following steps:

Step S401: Before access, the power terminal equipment to be accessed selects a transmission protocol, obtains the required configuration information and configures the protocol information;

Step S402, when accessing, configure the IoT platform according to the protocol information to select the corresponding transmission protocol, and the power terminal equipment and the IoT platform establish a communication link through the selected transmission protocol service;

Step S403, obtain the data uploaded by the power terminal equipment, and the protocol parsing layer performs protocol parsing on the uploaded data;

Step S404: The protocol encapsulation layer encapsulates the parsed data into a unified protocol format.

Further, in step S4, the data conversion adaptation specifically includes the following steps:

Step S410: Upload the message content using a unified protocol format through the protocol-adapted device;

Step S411: Extract data from the content of the message uploaded in a unified protocol format, and perform data conversion according to the object model mapping rules defined in step S3.

Compared with the prior art, the present invention has the following beneficial effects:

By customizing the power equipment object model and adaptation method, a unified and standardized method is provided to solve the problems of protocol differences of many heterogeneous power equipment, software and hardware development coupling, equipment islanding, data islanding, etc., which can meet the needs of flexible and standardized connection of power equipment. input requirements to support data collection of power equipment in power grid business applications.

Description of drawings

Figure 1 is a flow chart of an embodiment of the present invention;

Figure 2 is a schematic diagram of the protocol adaptation process according to an embodiment of the present invention;

Figure 3 is a schematic diagram of the data adaptation process according to an embodiment of the present invention.

Detailed ways

In order to further elaborate on the technical means and effects adopted by the present invention to achieve the intended inventive purpose, the following is a detailed description of the adaptation method of a customized object model of electric power equipment proposed according to the present invention in conjunction with the drawings and preferred embodiments. The implementation, structure, characteristics and effects are described in detail as follows.

As shown in Figures 1-3, the present invention provides a method for adapting a custom object model of power equipment, which includes the following steps:

Step S1: Customize the physical model, digitally express the information of the power terminal equipment in a unified format, build a unified physical model standard data message format, and generate the physical model information of the equipment;

The power equipment custom object model is the digital expression of various types of IoT terminal equipment in the power industry in the Internet of Things. It is the basis for realizing information interaction with power terminal equipment. The purpose of building a unified power equipment object model is to unify the device attributes. Describe the method, standardize the data exchange format, establish a standardized data mapping relationship between terminal equipment and business systems, and support the application interaction requirements of power terminal equipment data information in the Internet of Things;

The definition of the object model is based on a description language format of an object. Unified expression mainly unifies data expression formats such as abstract definitions and parameter descriptions. The object model contains all the information required to describe power equipment. Including the device's attribute description, event description, command service description and definition, etc., a complete description of the device function is achieved by mapping the device to the three dimensions of attributes, events and interfaces;

1) Attributes include static attributes and dynamic attributes of power equipment. Static attributes are attributes that will not change during the entire life cycle of power equipment, including but not limited to equipment unique identification, equipment name, equipment model, etc.; dynamic attributes refer to the operation of power equipment. The attributes of the data collected during the process support custom dynamic attributes. You can customize object model attributes by setting attribute unique identifier, attribute name, attribute value data type, data length, whether it is required, whether it is read-only, etc., such as the current of an electric meter, Attributes such as voltage and other collected quantities;

2) Events refer to business information and alarm events actively reported by power equipment. The physical model events can be customized by setting event parameters such as event identifier, event name, event type (information and alarm), and event parameters;

3) Interface refers to the interface for power equipment to receive control commands, which can be remotely called by authorized equipment and perform response or control operations, such as temperature setting of air conditioning equipment, etc. Customize the object model interface by setting interface parameters such as interface identification, interface name, interface description, interface method name, interface parameters, and interface parameters;

The description language format adopts JSON format (JavaScript Object Notation, JS object tag, a lightweight data exchange format);

Step S2: Object model information is synchronized, and the object model information is provided to the power terminal equipment through a unified object model information interface;

The physical model information interface adopts API interface;

Step S3: Obtain the data message format reported by the power terminal equipment, including the message format of attribute value data and event reporting data;

Set the mapping rules according to the message format of the device. If the data message format is the same as the object model standard data message format, jump to step S5;

If a customized data packet format is reported, the object model mapping rules need to be configured. The specific mapping matching relationship is:

1) The data transmission reported by the device is in josn format: mapped through the key value of the JSON message and the unique identifier of the identifier attribute of the object model; such as: {key1:v1, key2:v2}, map the object model definition through key1 Attributes can support nested JSON, and use the path of the JSON key value to map, such as: {test:{key1:v1, key2:v2}}, and use test.key1 to map the attributes defined by the object model;

2) The data transmission reported by the device is in binary format: mapped through the address of the binary data and the unique identifier of the identifier attribute of the object model;

After the object model mapping rules are set, jump to step S4.

Step S4: Adaptation access. Adapt the power terminal equipment whose data message format is different from the object model standard data message format, and then jump to step S5. The adaptation includes protocol adaptation and data conversion adaptation. .

The protocol adaptation service provides protocol adaptation libraries for multiple protocols such as ICE104, MQTT, CoAP, ModBus, etc. Before accessing the terminal device, users must first select the corresponding transmission protocol of the device to obtain the required configuration information and configure the protocol information;

When the terminal device is connected, it connects to the service of the corresponding protocol in the protocol adaptation library according to the protocol configuration information to establish a communication link;

The terminal device uploads data information through the corresponding protocol service. First, the protocol parsing layer of this protocol service performs protocol parsing on the data packet to obtain the terminal device data;

After the protocol is parsed, the terminal device data is encapsulated into a unified MQTT (MessageQueuing Telemetry Transport, Message Queuing Telemetry Transport Protocol) protocol format through the protocol encapsulation layer to publish messages.

The data conversion and adaptation service obtains the content of the message uploaded by the device after protocol adaptation through a unified MQTT (Message Queuing Telemetry Transport Protocol) protocol format.

In step S1, standard equipment object model information of the device is defined through the object model;

In step S3, the data conversion rules between the device upload data and the object model data are defined through the object model mapping definition;

Therefore, the data of the message content of the device can be extracted based on the obtained message content uploaded by the device after protocol adaptation, and the data can be converted according to the data conversion rules corresponding to the device in step S3, and converted into object model data.

Step S5: Output the object model data, store the object model data, update the object model information, and transfer it to the upper-level business system through a unified format.

The above content describes the basic principles and advantages of the present invention. Practitioners in this industry should understand that the above descriptions are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention will be All should be included in the protection scope of this application.

Claims (10)

1. The adaptation method of the self-definition object model of the power equipment is characterized by comprising the following steps of:

step S1: the method comprises the steps of customizing an object model, carrying out digital expression of unified format on information of power terminal equipment, constructing a unified object model standard data message format, and generating object model information of the equipment;

s2, object model information is synchronized, and the object model information is provided for the power terminal equipment through a unified object model information interface;

step S3, acquiring a data message format reported by the power terminal equipment, and judging whether the data message format is the same as the standard data message format of the object model;

if the data message format is different from the standard data message format of the object model, defining an object model mapping rule of the power terminal equipment, generating an object model mapping rule based on a matching relation between the data message format reported by the power terminal equipment and the object model information, and jumping to the step S4;

if the data message format is the same as the standard data message format of the object model, jumping to the step S5;

step S4, adapting access is carried out, the power terminal equipment with the data message format different from the standard data message format of the object model is adapted, and then step S5 is skipped, wherein the adaptation comprises protocol adaptation and data conversion adaptation;

step S5: and outputting object model data, storing the object model data, updating object model information, and transferring to an upper-layer service system through a unified format stream.

2. The method for adapting a custom model of electrical equipment according to claim 1, wherein: the step S1: the method comprises the steps of carrying out digital expression on the power terminal in the Internet of things through the customization of the object model, wherein all information of the power terminal equipment is described as attributes, events and interfaces.

3. The method for adapting a custom model of an electrical device according to claim 2, wherein: the attributes comprise static attributes and dynamic attributes of the power equipment, wherein the static attributes are the attributes of the power equipment which are not changed in the whole life cycle; the dynamic attribute is an attribute of data collected during operation of the power device.

4. The method for adapting a custom model of an electrical device according to claim 2, wherein: the event is business information and alarm event actively reported by the power equipment, and the event parameter is set to be a user-defined object model event, wherein the event parameter comprises event identification, event name and event type.

5. The method for adapting a custom model of an electrical device according to claim 2, wherein: the interface is a control command interface received by the power equipment, can be remotely called by the authorized equipment and execute response or control class operation, and is a user-defined object model interface by setting parameters of the interface, wherein the interface parameters comprise an interface identifier, an interface name, an interface description, an interface method name, an interface parameter transmission and an interface parameter output.

6. The method for adapting a custom model of an electrical device according to claim 2, wherein: the object model information interface adopts an API interface.

7. The method for adapting a custom model of an electrical device according to claim 2, wherein: in the step S2, the object model information provided to the power terminal device includes: the object model unique identification, the attribute description and instruction service description of the device and the message format, and the configuration information of the supported access protocol, including protocol type, protocol address and access account key.

8. The method for adapting a custom model of an electrical device according to claim 2, wherein: in the step S3, the data message format includes a message format of attribute value data and a message format of event report data.

9. The method for adapting a custom model of electrical equipment according to claim 1, wherein: in step S4, the protocol adaptation specifically includes the following steps:

step S401, before accessing, the power terminal equipment to be accessed selects a transmission protocol, acquires required configuration information and carries out protocol information configuration;

step S402, when in access, the Internet of things platform is configured according to protocol information to select a corresponding transmission protocol, and the power terminal equipment and the Internet of things platform establish a communication link through the selected transmission protocol service;

step S403, data uploaded by the power terminal equipment is obtained, and a protocol analysis layer carries out protocol analysis on the uploaded data;

in step S404, the protocol encapsulation layer encapsulates the parsed data into a unified protocol format.

10. The method for adapting a custom model of electrical equipment according to claim 1, wherein: in step S4, the data conversion adaptation specifically includes the following steps:

step S410, uploading the message content by the equipment with the protocol adaptation by adopting a unified protocol format;

step S411, extracting data from the message content uploaded in the unified protocol format, and converting the data according to the object model mapping rule defined in step S3.