admin 管理员组

文章数量: 1087139


2024年3月19日发(作者:java获取异常堆栈信息)

C C 

Journal of Energy and Power Engineering 6(20 1 2)965-97 1 

ommon Information ModeI:A Bus Service for Electric 

alculations in AES Eletropaulo 

Carlos Alexandre de Sousa Penin ,Wladmir Sybine ,Claudio Masanori Matayoshi and Flavio Celio de Souza 

Cerdan 

1.1n,rastructure Department,Brazilian Institute ofGeography and Statistics(IBGE),Sao Paulo 04542—050,Brzial 

2.Engineering Departmen ̄Daimon Engenharia e Sistemas Ltda,Sao Paulo 01310—200,Brazil 

3.Information Security and Innovation Division.Scopus Tecnologia Ltda,Sao Paulo 051 0—000,Brazil 

4 4.ITManagement,Management ofDistribution Systems,AES Eletropaulo,Sao Paulo 01009・970,Brazil 

Received:March 15,201 1/Accepted:August 31,201 1/Published:June 30,2012 

Abstract:This paper resumes a research project developed in the concession area of AES Eletropaulo,the largest electrical energy 

distribution company in Brazil.First.the global standards of information exchange within power transmission and distribution area 

were evaluated,allowing the definition of state of the art on the theme,followed by determining its applications considering 

technologies already applied by the company.The speciicatifons needed for the generation of a data integration model are adapted to 

radial overhead network at company concession rea.The aproject developed an intermediary connectivity layer.based on the CIM 

(common information mode1),which enables corporative systems to communicate in a standard way,through the use of integrating 

technologies.It,therefore,enabled modeling all main subjects of an electrical network in an open,extensible and non-proprietary 

way.in a model that contains classes and attributes of such subjects.as well as their relationships.Calculation and planning products 

adopted by the company were integrated to the technological layer implemented. 

Key words:Common information model,enterprise service bus,electrical calculation applications,planning applications,SOA 

(service oriented rchiatecture). 

1.IntrOductiOn 

This paper presents the methodology applied in a 

international patterns for systems interface formatting 

information[8-1 0]in an extensive and connectable 

way with open technologies,developed,however,in a 

pioneering manner to meet the needs and the standards 

of the Brazilian networks. 

The interface between the corporative systems and 

research project that studied the global standards of 

infornlation exchange within the area of power 

transmission and distribution. allowing for the 

definition of the state of the art of the theme『1.41 as 

well as its application considering technologies already 

the specialized systems of electrical calculation has a 

cost that may be minimized with the suitable use of 

strategic integrations.Considering the existence of 

applied by the company AES—Eletropaulo【5,6]. 

The speciifcations needed for the generation of a 

data integration model【7],adaptable to radial 

overhead networks at company concession area,were 

many corportaive systems[5]and the importnce aof the 

integration and connectivity between them,the 

definition of a speciifc semantic for the electrical sector 

researched and defined in accordance with 

was an important goal reached by this project.The 

applied strategy was the definition and application of an 

C0rresponding author:Carlos Alexandre de Sousa Penin, 

Ph.D.,infrastructure analyst,research fields:distribution 

systems,non technical losses and financial market analysis for 

interface layer known as CIM(common information 

mode1),created by EPRI(Electric Power Research 

energy companies.E-mail:carlos.penin@ibge.gov.br. 

966 Common Information Model:A Bus Services for Electric Calculations in AES Eletropaulo 

Institute)and standardized by the IEC(International 

Electrotechnical Commission)and maintained by The 

CIMug(CIM Users Group)[1 1】. 

2.Development 

2. WorkPreparation 

The project developed an intermediary layer for 

connectivity based on the common information model, 

widely known as CIM【1,2】.This model allows the 

standardized communication among corporative 

systems,through the use of integrating technologies. 

It,therefore,enabled modeling all main subjects of 

an electrical network in an open way,extensible and 

non—proprietary in a model that contains classes and 

attributes of such subjects as well as their 

relationships.The model was developed in accordance 

to main known initiatives[4,7],supposed by global 

standards for the interface between systems, 

formatting information in an extensive and 

connectable way with open technologies,developed, 

however,in a pioneering manner to meet the needs 

and the standards of the Brazilian networks[5]. 

Aspects related to the data synchronicity and 

availability were analyzed in the integration layer, 

which corresponds to the connectivity bases where the 

electric calculation modules and the GIS(Geographic 

Information System)[1 2]were integrated.Through 

this analysis,a reference for the company was 

released,allowing the extension such technology for 

the other systems such as measurement,billing and 

other calculation systems. 

Calculation and planning products were integrated 

to a defined technological layer,making old extractors 

obsolete once now the calculation of the input is done 

by the integration layer. 

One of the benefits of the extractors is the 

elimination of additional programming codes that 

introduces errors in data transfer.It also improves the 

performance decreasing the costs of integration and 

interoperability. 

The proposed scope for the project is a conceptual 

proof that may be extended to other applications in the 

future.For the property systems of the company,it 

will be necessary to execute an adaptation and a 

migration,using the experience acquired with the 

project development. 

2.2 Common Data Model-Assessed Options 

There are many options of electrical data models 

available in the market.However,if it is considered 

only open and non—proprietary models,there are not 

so many options available.As part ofthe R&D project, 

the main models available in the market was studied. 

The choice was made towards the most complete 

model,which applies the most recent technology and 

that is becoming the market pa ̄ern,assuring stabiliyt 

and continuity for the developments proposed,and 

contributing towards the future policies of the 

company.The studied and confronted models were: 

MultiSpeak from NRECA(National Rural Electric 

Cooperative Association)[1 3】,PSAD/DSAD(power 

systems analytical data and distribution system 

analytical data)from EPRI and CIM rfom EPRI. 

Due to an initiative sponsored by IEEE(Institute of 

Electrical and Electronic Engineers)in the beginning 

of 1 998,the PSAD(power systems analytical data) 

work group was formed,which was aiming to develop 

an analytical data model for power systems. 

On the other hand,due to an initiative also 

sponsored by IEEE in the same period,the DSAD 

(distribution system analytical data)work group was 

aiming to define an analytical data dictionary for 

power distribution systems based on XML and 

COM/CORBA technologies for the support and 

making of data transference.The work developed by 

DSAD was more promising,due to its concem with 

the recent software engineering technologies. 

In the beginning of 2000,PSAD and DSAD work 

groups were encapsulated by the IEC TC57 WG14, 

resulting in the CIM,which covers the transmission, 

distribution,generation,planning and market[1 1】. 

The MultiSpeak【1 3]was conceived in order to 

answer the needs of rural electrical cooperatives from 

Common Information Model:A Bus Services for Electric Calculations in AES Eletropaulo 967 

the United States,i.e.,all of them are small power 

distribution companies;while the CIM is intended for 

any kind of company in the electrical sector.The 

MultiSpeak is focused in system interfaces,while the 

CIM proposes a wide model,which may be used for 

the interface or even interfere in the modeling of the 

whole system. 

MultiSpeak and CIM are information models based 

on object—oriented technology that define classes.For 

the data exchange and representation,both use 

technologies that came from XML.Both use XML 

schemes to define messages,as well as nouns and 

verbs for the definition of messages(but with different 

vocabularies). 

Both of them use GML(a geography markup 

language)which is the XML grammar defined by the 

OGC(Open Geospatial Consortium)to express 

geographical characteristics. 

The choice was made towards the CIM from EPRI 

[14,15]due to the global scale that it is achieving,and 

due to the amplitude of its mode1.Another reason that 

contributed to this choice refers to the availability of 

its IEC standards[161.The choice smisfied the 

project’s objectives completely and is becoming an 

international paRern.The existence of the users group 

CIMug[1 1】also contributed on the choice,since it 

constitutes a discussion forum that has contributed 

towards the model improvement. 

3.CIM:Fundamentals and Contents 

The CIM 1s defined through object。oriented 

modeling techniques.The model specifications are 

developed using UML.These specifications divide the 

model into packages.Each one of these packages is 

composed by a set of classes,relationships,class 

diagrams,and many other packages.Each one of these 

packages that are used to compose the CIM will be 

briefly described【1 6]. 

3.1 IEc 61968StandardsSet 

The IEC 6 1 968 Standards Set was developed by the 

IEC’s IT Technical Committee for Power Systems 

(IEC TC57),Work Group 14:Interface Systems for 

the Distribution Management(WG 1 4).The same 

Committee also revises the standard set. 

The IEC 6 1 968 Standards Set is composed by four 

standards,defining the distribution management 

aspects of the mode1.It identiifes and establishes the 

inforlnation requirements for standardized interfaces. 

which are intended to DMS(distribution management 

systems).and based on interface architecture. 

Considering the organizational terms of the data 

mode1.these standards are organized into six class 

packages:Assets,Consumers,Core2,Documentation, 

ERP Support and Work. 

3 2 IEC 61970StandardsSet 

The IEC 6 l 970 Stnadards Set was developed by the 

IEC’s IT Technical Committee for Power Systems 

(IEC TC57).Wor1(Group 1 3:Energy management 

system application program interface(EMS--API) 

rWG131.The standard set iS also maintained/revised 

by the same Committee. 

The IEC 6 1 970 Standards Set is composed by eight 

standards nowadays,which defined the specifications 

for the interface patterns for the application used by 

the electrical sector. 

Considering the organizationaI terms of the data 

mode1.these standards are organized into ten class 

packages:Core,Domain,LoadModel,Meas,Outage, 

Topology,Wires,Generation,SCADA,Protection. 

4.Design of the Common Data Model Layer 

Due to the choice towards the GIS model,the next 

task was to achieve its correlation with the systems 

rfom the initial scope of the project.So,they were 

transformed into electrical calcultaion applications 

and planning applications,both compatible with the 

CIM semantic. 

The data synchronicity in the integrating layer with 

the GIS data,through successive XSLT 

transformations was studied and implemented. 

Common Information Model:A Bus Services for Electric Calculations in AES Eletropaulo 969 

(3)The responsibility towards the data consistency 

that executes the service,answering a customer 

is from the calculation bus. 

4.3 Processes Flow 

It is defined that the customer system represents the 

system which requires the information and/or service, 

and the provider system represents the system that 

provides the information and/or service.It is important 

to highlight that the same system may play the roles of 

customer and provider in different moments. 

So,the customer system requires information 

regarding electrical calculation,topological data, 

consumption data,or any other records.This 

requirement occurs indirectly,since the system 

communicates with its specific connector and not with 

the bus. 

Each connector executes semantic transformations 

and forwards the data to the calculation bus or to the 

speciifc system which is connected to.The CIM 

connector will receive the data and/or the requisitions 

from the customer system,and will also send them to 

the bus. 

The travelling data through the calculation bus are 

formatted into XML—CIM.The calculation bus is 

responsible for consisting all the data received in the 

XML—CIM semantic,and it is also responsible for 

identifying which system actually required the data

, 

acting as an intermediary between the provider and the 

customer of the information(mechanism known as 

binding). 

The information provider system receives the 

information requisition,processes this requisition and

, 

then,returns a response package with the required 

information. 

Fig.1 illustrates the solution adopted,highlighting 

the details involved in the processes lfow. 

In Fig.1,it is possible to identify the involved 

systems and the role of each one.It is also possible to 

notice that the customer role system(the one that 

consumes or requires the result of a service provided 

by a provider)and the provider system role(the one 

requisition)may be changed according to the 

situation. 

Therefore,the CIM calculation bus(Middleware)is 

the system that relates the provider services with the 

customer dynamically,veriyfing the data according to 

CIM—XML semantic.and also identiyfing the system 

that required the data,acting as an intermediary 

between the provider and the customer of the 

inforillation. 

5.Conelusions 

The methodology used in the research project 

studied the global patterns of information exchange in 

the area of transmission and distribution of electricity

, 

understanding the state of the art of the theme and also 

how to use it with the technologies adopted by AES 

Eletropaulo【5,6】. 

The specifications necessary for the generation of a 

data integrtaion model,that is adaptable to overhead 

radials and underground reticulated distribution 

feeders present in the area of the company’s 

concession,were researched and defined. 

Considering the existence of many corporative 

systems and the criticaliyt of integration and 

connectiviyt between these systems,the definition for 

a specific semantics for the electricity sector was an 

important goal achieved by the project.The interface 

between systems, considering both corporative 

systems and specialized systems for electrical 

calculations,has a cost that can be minimized with 

appropriate integration strategies.The strategy used 

was the definition and use of an interface layer known 

as CIM,created and maintained by EPRI and 

regulated by the IEC. 

The project developed 

an intermediate layer of 

CIM—based connectivity 

that enables enterprise 

systems talk in a standardized manner,through the use 

of integrative technologies. 

Thus,it was possible to model all the main objects 

of a grid,in an open,extensible and non-proprietary 

970 Common Information Model:A Bus Services for Electric Calculations in AES Eletropaulo 

way.in a model that contains classes and attributes of 

these objects,as well as the relationships between 

them.The model was developed in line with the 

known major initiatives,and supported by world 

standards for interface between systems,formatting 

information in a pluggable and extensible system with 

open technologies,in accordance to the Brazilian 

requirements and patterns. 

Aspects related to time integration(timing)and 

availability of the data integration layer were analyzed 

and addressed.The foundations of connectivity 

modules were integrated with electrical calculation 

systems and geographic information systems.Thus,it 

is now available as a reference for the company to 

extend this technology to its other systems,for 

example,measurement systems,billing systems and 

other systems calculations. 

The products of calculation and planning were 

integrated into the defined layer technology,so that 

the old extractors have become obsolete,for now the 

integration layer provides the calculation inputs.The 

elimination of extractors brings direct benefits,to the 

elimination of programming codes that introduce 

additional errors in data transfer,in addition to 

improving performance,reducing costs and especially 

the efforts of integrtaion and interoperability. 

This new technology is a proof of concept that can 

be extended to other applications,enabling integration 

in the future.In traditional systems the company will 

require adaptation and migration,and the experience 

gained in this project with the applications of 

electricaI calc ̄alations can be reused in these activities. 

Acknowledgments 

The authors would 1ike to thank the c0ntributi0ns of 

Terry Saxton,offered during the CIM users meeting in 

Vasteras,Sweden,2008.These contributions were 

important ofr the development of this paper. 

References 

【11 Common Information Model(CIM):CIM 10 Version, 

EPRI Technical Result,Grid Operations Program,Palo 

AltO,CA,2001. 

【2】 S.Newman,CIM extensions for electrical distribution,in: 

IEEE Power Engineering Society Winter Meeting,200 l, 

PP.904-907. 

[3】 R.Podmore,M.Robinson,Introduction to CIM, 

Technical Report for Power Data Corporation and 

Incremental Systems Corporation,2000,P.94. 

【4】 R.Pedro,ODP integration ̄IM for definition of a 

system information arquiteture:An application in the 

quality of the electrical energy distribution,Master Thesis, 

Escola Polit6cnica of University of Sao Paulo,Brazil, 

2004. 

【5】H.P.Schmidt,N.Kagan,L.R.Barbosa,H.Kagan,C.A.S. 

Penin,A.U.Antunes,et a1.,Soflware development for 

underground and overhead distribution system design.in: 

LAPTEC——_The 6th Congress of Logic Applied to 

Technology,Santos,Brazil,2007. 

【6】 C.C.B.Oliveira,N.Kagan,H.P.Schmidt,C.V.Bocuzzi, 

I.T.Domingues,Design of secondary distribution 

networks incorporating risk analysis of electrical and 

mechanical parameters within a geographic information 

system.in:International Conference on Electricity 

Distribution(CIRED),Nice,Frnace,l 999. 

【7】D.Becker,T.Saxton,Report on the Sixth Control 

Center Application Program Interface(CCAPI) 

InteroperabiIity Test:The Power of the Common 

Information Model(CIM1 and Generic Interface 

Definition(GID)to Exchange Power System Data, 

EPRI,Palo Alto,CA,2004. 

【8】D.Becker,T.Saxton,Report on the Common 

Information Model(CIM)Extensible Markup Language 

(XML)Interoperability Test群4:The Power of the CIM to 

Exchange Power System Models,EPRI,Palo Alto,CA, 

2002. 

【91 A.McMorran,G.W.Ault,I.M.Elders,C.E.Foote,G.M. 

Burt,J.R.McDonald,Translating CIM XML power 

system data to a proprietary format ofr system simulation, 

IEEE Trnasactions on Power Systems 1 9(1)(2004) 

229.235. 

【10】A.Vos,S.E.Widergren,J.Zhu,XML for CIM model 

exchange,in:22nd IEEE Power Engineering Society 

International Conference,Sydney,Australia,200 1. 

[11】CIM Users Group Conference,V/isterhs,Sweden,2008, 

CIM Users Group Web site.http://cimug.ucaiug.org. 

[12】Using ArcView GIS Software,ESRI(Environmental 

Sciences Research Institute),Redlands,CA,1 996. 

【13】Multispeak--National Rural Electric Cooperative 

Association Home Page,http://www.multispeak.org. 

【14】Technical Committee,Energy Management System 

Application Program Interface(EMS-API),Part 30 1: 

Common Information Model (CIM) Base, IEC 

Publication.201 1. 

Common Information Model:A Bus Services for Electric Calculations in AES Eletropaulo 971 

【1 5】Technical Committee,Energy Management System 

Application Program Interface(EMS—API),Part 50 1: 

Common Information Model Resource Description 

[16】Technical Committee,Application Integration at Electric 

Utilities-System Interfaces for Distribution 

Management,Part 1 1:Common Information Model(CIM) 

Framework(CIM RDF)Schema,IEC Publication,2006. 

Extensions for Distribution,IEC Publication,20 1 0. 


本文标签: 获取 堆栈 信息 作者