WO2015176563A1

WO2015176563A1 - Unified modeling method using generalized measurement transverse correlation mode

Info

Publication number: WO2015176563A1
Application number: PCT/CN2015/072872
Authority: WO
Inventors: 袁志贤
Original assignee: 袁志贤
Priority date: 2014-05-22
Filing date: 2015-02-12
Publication date: 2015-11-26
Also published as: CN103995932A

Abstract

The present invention relates to a unified modeling method using generalized measurement transverse correlation mode characterized in comprising the following steps: modeling power grid equipment; modeling secondary on the basis of IEC61850, and establishing correlative relationship between the primary equipment and the secondary equipment; asset modeling; other-data abstract modeling; establishing PSR-centered generalized measurement model; meta-model defining. The method can also be used for unified modeling for an automation system of all related information in a power system. The method in the present invention improves the software development efficiency and accuracy, shortens the development cycle, realizes the power grid model unification, provides a complete data platform, adopts the flexible meta-data mechanism, applies a service-oriented multi-layer system architecture so that share the electric power information resource.

Description

Unified Modeling Method Using Generalized Measured Horizontal Correlation

Technical field

The invention is applied to the field of dispatching automation of various power systems, in particular to the unified modeling of the relevant automation system of the patrol center, and is also applicable to the data integration of other automation systems.

Background technique

The Southern Power Grid has continuously carried out in-depth research and pilot application of substation operation and maintenance technology. The substation cockpit is an integrated technical platform for substation operation and maintenance, integrating professional technical system information such as monitoring, control, equipment monitoring and maintenance management of the substation. With the system operation department of China Southern Power Grid Corporation leading the research on the comprehensive operation of the cockpit technology of the power system, more and more attention has been paid to the work of the patrol center responsible for the operation and maintenance of the substation equipment. In order to promote the improvement of the inspection efficiency and improve the equipment management level of China Southern Power Grid Corporation, the cockpit system of the patrol center was developed based on the research of the cockpit of the substation. The system integrates data and information related to equipment assets, such as energy management system, production management information system and equipment condition monitoring center, to serve different levels of users, and supports asset status assessment and risk for the patrol center and its substation equipment. Analysis and operation and maintenance efficiency optimization work.

The cockpit of the patrol center is an integrated working platform for substation operation and maintenance. It integrates multi-professional systems, builds a unified information platform, standardizes various business interfaces, and carries out collaborative operations between businesses to provide a platform for equipment monitoring and operation and maintenance management. Support.

Improve the ability and response speed of the patrol center to deal with accidents, reduce the work intensity and workload of the patrol center operators, and improve operation and maintenance efficiency and operation and maintenance quality. In addition, the computerization of rich professional knowledge and the improvement of the automation of data analysis also reduce the dependence of the operation and maintenance business on the professional knowledge of the operating personnel, and improve the operation and maintenance plan and operation results. The degree of standardization.

Among them, the unified modeling of various types of data involved in the patrol center is the basis of the cockpit of the patrol center. At present, the relevant specifications are defined in the CIM specification and the relevant specifications of China Southern Power Grid, but the definition of secondary equipment and its information is not comprehensive enough, and various types of data are not effectively integrated.

In order to adapt to the diversity of such requirements, the present invention proposes a unified modeling method using a generalized measurement horizontal correlation method, which is a new attempt based on the accumulation of operating experience of the automation related system for many years.

Summary of the invention

In view of the deficiencies of the prior art, the present invention is based on the IECTC57 public information model CIM, and refers to the IEC61850 specification, and proposes a unified modeling method using a generalized measurement horizontal correlation method, the purpose of which is to refer to various types of data involved in the patrol center. On the basis of the respective abstract modeling of information, the generalized measurement and horizontal correlation method is used for unified modeling to achieve the abstraction of the actual system, and the automatic data and various types of equipment in actual production are controlled and managed through the model. At the same time, the metamodel is defined in accordance with this idea. The metamodel contains domain knowledge, which constrains the modeling behavior and ensures that the model established in the modeling phase follows the domain constraints. The method improves the abstraction level of solving the problem, so that the advanced application module built on the platform can focus on the problem logic itself rather than the details of the underlying implementation or the organization of various messy data, improving the efficiency of software development. And the correct rate shortens the development cycle.

CIM: Common Information Model. CIM is an abstract model designed using the visual object-oriented modeling language UML. CIM performs on major grid equipment and related objects Modeling, including the public classes and properties of these objects, and the relationships between them. Working Group 14 (WG14) of IEC TC57 extended CIM in the series of standards IEC61968, supplementing several equipment asset information models, including: asset management, work management, construction management, geographic information system (GIS), outage management, etc. The CIM model is further refined to cover all objects in the power industry.

The cockpit of the patrol center is an integrated technology platform for substation operation and maintenance. It integrates the technical system information of monitoring, control, equipment monitoring and maintenance management of the substation, with the main principles of “standardization” and “modularization”. “System streamlining, information specification, interface unification, and business collaboration” are the main technical features, providing one-stop support for power grid monitoring, equipment monitoring and operation management. It involves eight categories of data, mainly for conventional scheduling scada, wam automation system data, equipment status monitoring data, power quality system, fault information system data, MIS asset management, etc.

The technical solution of the present invention is as follows: The present invention uniformly models all the automation data related to the operation of the power industry by using the generalized measurement horizontal correlation method, and specifically includes the following steps:

a) grid equipment modeling;

The grid equipment is abstracted as a power system resource. The model is based on the device container and the primary device. According to the CIM definition, the inherited top model is mapped to the real-time library in the overall inheritance relationship of the model/container. The equipment container model adopts three levels of plant station, voltage level and interval. The conductive equipment with clear voltage level is placed at the interval of specific voltage level. The cross-voltage level object and the main object of the plant station can be directly placed in the interval directly belonging to the plant station. For example, the main transformer interval where the main transformer is located may belong directly to the substation. The equipment model mainly includes: transformer, switch, knife Power primary equipment such as gates, busbars, and AC line segments.

b) For the existing CIM extension, the secondary equipment is modeled according to IEC61850, and the primary and secondary equipment association relationship is established;

That is, according to IEC61850, a model IED is established for all secondary devices (including protection devices, centralized recorders, measurement and control, etc.), and the IED establishes an aggregation relationship with the interval Bay, which is expressed as a hierarchical relationship. Due to the particularity of the secondary equipment, the relevant acquisition information of the secondary equipment and the quantity measurement of the primary equipment are modeled the same, and the relationship between these measurements and the secondary equipment is established. On this basis, the primary and secondary device associations are added to the secondary device model, as shown in FIG. This model definition contains definitions of secondary device motion data such as protection at fault.

c) Asset Modeling:

Although the public power system model resource model system defined by the South Network itself is complete, it often only includes the primary equipment. It needs to extend the monitoring device to the association of CIM::Asset (ie, assets) to support the data association and correspondence with the PMS system. And the device parameters in the model built according to the functional location are not detailed enough to fully meet the needs of the platform.

State maintenance requires a large number of equipment parameters as the basis for evaluation, and many of these equipment parameters are subordinate to the asset object, so the asset model is essential. Asset-related information is described in the AssetInfo package. AssertInfo is an inheritance of Asset and is associated with the power resource PowerSystemResource. A power system resource object is often associated with one or more asset objects. Taking a transformer as an example, a master variable object may be associated with multiple asset objects, including transformer assets and casing assets.

Part of the equipment parameters are attributed directly to the asset object, such as the equipment model and phase of the transformer asset, and more parameters are difficult to describe with fixed attributes, such as high voltage. - Low-voltage load loss, oil temperature alarm value, etc. To enhance the flexibility of device parameters, not limited to a few fixed attributes, the relationship between most device assets and device parameters is bound using a one-to-many association.

d) other data abstract modeling;

The equipment status monitoring related data is mainly for primary equipment, so the measurement type is increased for equipment condition monitoring, and the model aggregation relationship of PSR-measurement is used to define; the power quality monitoring related data is also processed.

e) establish a generalized measurement model centered on the PSR;

For the above professional range of data, horizontal broadening is required, as shown in Figure 2, a generalized measurement model is created, and a real-time library is mapped.

f) Metamodel definition.

The method is aimed at the business characteristics of the cockpit of the patrol center, and proposes a higher level abstract method for the modeling description of the cockpit, so that the advanced application module built on the platform can focus on the problem logic itself instead of The details of the underlying implementation or the organization of various messy data improve the efficiency and accuracy of software development and shorten the development cycle. The unified grid model is realized, a complete data platform is adopted, a flexible metadata mechanism is adopted, and a service-oriented multi-layer architecture is used to share power resources resources.

DRAWINGS

The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

Figure 1 is a CIM package extension of the present invention;

Figure 2 is a generalized measurement definition of the present invention.

detailed description

Based on the CIM, refer to the relevant standards of the South Network to expand the unified definition of the model UCIM. On the basis of CIM, UCIM mainly expands the secondary equipment, fixed value, generalized measurement model for various professional information, and job-related description.

1. Power system resource model

The power system resource model is mainly based on equipment containers and primary equipment. The equipment container model adopts three levels of plant station, voltage level and interval. Conductive equipment with clear voltage level is placed at an interval of specific voltage level, cross-voltage level object and plant station. The main object can be placed directly in the interval directly belonging to the plant station. For example, the main transformer interval where the main transformer is located can directly belong to the substation. The equipment model mainly includes: power primary equipment such as transformers, switches, knife gates, busbars, and AC line segments.

According to the definition of IED in IEC61850, the project expands the IED in UCIM to describe the secondary device model, and adds related information objects, such as fixed values.

2, the asset model

The public power system model resource model system defined by the South Network is complete, but it usually only contains the primary equipment. It needs to extend the monitoring device to the association of the assets CIM::Asset to support the data association and correspondence with the PMS system, and The device parameters in the model built by the functional location are not detailed enough to fully meet the needs of the platform.

State maintenance requires a large number of equipment parameters as the basis for evaluation, and many of these equipment parameters are subordinate to the asset object, so the asset model is essential. Asset-related information is described in the AssetInfo package. AssertInfo is an inheritance of Asset and has a relationship of (0..*-------0..*) (ie many-to-many) with the power resource PowerSystemResource. A power system resource object is often associated with one or more asset objects. Taking a transformer as an example, a master variable object may be associated with multiple asset objects, including transformer assets and sets. Manage assets and so on.

Part of the equipment parameters are attributed directly to the asset object, such as the equipment model and phase of the transformer asset, and more parameters are difficult to describe with fixed attributes, such as high-voltage-low-voltage load loss and oil temperature alarm value. To enhance the flexibility of device parameters, not limited to a few fixed attributes, the relationship between most device assets and device parameters is bound using a one-to-many association.

3. Generalized measurement model

The patrol center involves eight categories of data, and in the model there will be objects of the measurement type. In the CIM model, the measurement is described by two levels of measurement and measurement values, and one measurement may be associated with multiple measurements of different data sources. On this basis, expand the CIM measurement package and establish a generalized measurement model, as shown below. Focusing on the power system resource objects, we establish the relationship between measurement and assets, and link 8 types of data and systems.

The above describes in detail a specific embodiment of the present invention, which is directed to the business characteristics of the cockpit of the patrol center, and proposes a higher level of abstraction for solving the problem, so that the advanced application module built on the platform can focus on the application. The problem logic itself, rather than the details of the underlying implementation or the organization of various messy data, improves the efficiency and accuracy of software development and shortens the development cycle. The unified grid model is realized, a complete data platform is adopted, a flexible metadata mechanism is adopted, and a service-oriented multi-layer architecture is used to share power resources resources.

However, the scope of the invention should not be limited to these descriptions. Any modifications and improvements within the scope of the principles of the invention are within the scope of the invention.

Claims

The invention provides a unified modeling method using a generalized measurement horizontal correlation method, which is used to enable various types of information of different formats and contents sent by different smart devices to be in the form of user requirements in a power grid failure. The WINDOWS and UNIX operating platforms are fully displayed; this method adapts to the modification of the data format sent by the smart device and the user's demand for the fault report, the format and content of the action report through the modification of the template without modifying the fault report module software program. The feature is that the unified modeling method using the generalized horizontal correlation method includes the following steps:

a) grid equipment modeling;

b) The secondary equipment is modeled in accordance with IEC61850 and establishes primary and secondary equipment associations;

c) asset modeling;

d) other data abstract modeling;

e) establish a generalized measurement model centered on the PSR;

f) Metamodel definition and real-time library mapping.
The unified modeling method method using the generalized measurement transverse association method according to claim 1, wherein the secondary device described in step b) establishes a model IED, that is, a model IED is established for all secondary devices according to IEC61850. The IED establishes an aggregation relationship with the interval Bay, which is expressed as a hierarchical relationship. Due to the particularity of the secondary device, the related acquisition information of the secondary device and the measurement of the primary device are modeled the same, and the relationship between these measurements and the secondary device is established. .
The unified modeling method method using the generalized measurement horizontal correlation method according to claim 1, wherein the step d) comprises: device state monitoring correlation number According to the primary equipment, the measurement type is increased for the device condition monitoring, and the PSR-measurement model aggregation relationship is used to define; the power quality monitoring related data is also processed.
The unified modeling method method using the generalized measurement horizontal correlation method according to claim 1, wherein the step e) comprises: for the above professional range data, horizontally widening is required to create a generalized measurement model, and mapping Real-time library.