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IEC_61850_functional_testing.pdf

1、 215 Study Committee B5 Colloquium2005 September 14-16Calgary,CANADA FUNCTIONAL TESTING OF IEC 61850 BASED SUBSTATION AUTOMATION SYSTEMS FUNCTIONAL TESTING OF IEC 61850 BASED SUBSTATION AUTOMATION SYSTEMS Benton Vandiver,OMICRON electronics Corp USA Alexander Apostolov,AREVA T&D Automation,USA KEYWO

2、RDSKEYWORDS:IEC 61850,Substation Automation Systems,Functional Testing 1.1.INTRODUCTION INTRODUCTION The integration of multifunctional Intelligent Electronic Devices in complex substation or power plant automation systems requires the development of a standard protocol that will meet the requiremen

3、ts of protection,control,monitoring,recording and metering functions.The new IEC 61850 standard for communication networks and systems in substations allows the development of high-speed peer-to-peer communications based applications,as well as distributed metering,control and protection solutions b

4、ased on multicast analog data or sampled analog values.The paper discusses in detail the requirements for functional testing of complex substation automation systems.Two typical types of IEC 61850 based Substation Automation Systems(SAS)are considered:A system with Substation Bus(IEC 61850-8-1)only

5、A system with Process Bus(IEC 61850-9-2)and Substation Bus(IEC 61850-8-1)The method for testing of both types of systems is proposed based on the following order of system components tests:Testing of IEC 61850 protocol compliance of the individual components of the system IEDs,client applications,et

6、c.Functional testing of Merging Units Functional testing of IEC 61850 compliant IEDs Functional testing of bay level distributed applications Functional testing of substation level distributed applications Requirements for configuration of test plans for local and distributed functions and how the S

7、ubstation Configuration Language defined in the standard can help automate that process are discussed.215-1 Solutions for the testing of the individual components of the IEC 61850 based system,as well as for the testing of distributed applications are described in detail.2.2.DISTRIBUTED APPLICATIONS

8、 IN IEC 61850 BASED SAS DISTRIBUTED APPLICATIONS IN IEC 61850 BASED SAS IEC 61850 defines functions of a substation automation system related to the protection,control,monitoring and recording of the equipment in the substation.These functions can be executed within a single physical device(for exam

9、ple a protection IED)or can be distributed between multiple devices using a hard-wired or communications interface.The functions in the substation can be distributed between IEDs on the same,or on different levels of the substation functional hierarchy(Station,Bay/Unit or Process)These levels and th

10、e logical interfaces that IEC 61850 focuses on are shown in Figure 1.Fig.1 Logical interfaces in Substation Automation Systems Technical Services Remote control(NCC)CONTR.PROT.FCT.A FCT.B PROT.CONTR.Sensors Actuators BAY/UNIT LEVEL STATION LEVELPROCESS LEVEL HV Equipment Remote protection Process In

11、terface 1,633981,6224,54,5710Remote protection Distributed applications in SAS are typically based on two of these interfaces defined as:IF4:CT and VT instantaneous data exchange(samples)between process and bay level IF8:direct data exchange between the bays especially for fast functions like interl

12、ocking Functions in the substation can be divided into sub-functions and functional elements.The functional elements(Logical Nodes)are the smallest parts of a function that can exchange data.In the case when a function requires exchange of data between two or more logical nodes located in different

13、physical devices,it is called a distributed function.It is clear that when we test a SAS and its related components,we need to perform tests starting from the Logical Nodes and going all the way up to the distributed applications hierarchy in order to complete the distributed function testing.The ex

14、change of data is not only between functional elements,but also between different levels of the substation functional hierarchy.It should be kept in mind that functions at different levels of the functional hierarchy can be located in the same physical device,and at the same time,different physical

15、devices can be exchanging data at the same functional level.As can be seen from Figure 2;a Logical Connection(LC)is the communications link between functional elements-in this case Logical Nodes of the P and R groups.IEC 61850 also defines interfaces that may use dedicated or shared physical connect

16、ions-the communications link between the physical devices.215-2 The allocation of functions between different physical devices defines the requirements for the physical interfaces,and in some cases may be implemented into more than one physical LAN.Bay computerDistributedfunctionIF 8LC1P.R.LC2ProtectionIEDIF 8ProtectionIEDP.R.P.Fig.2 Distributed Function definition in IEC 61850 3.3.CONFIGURATION REQUIREMENTS FOR TESTING OF SAS CONFIGURATION REQUIREMENTS FOR TESTING OF SAS One of the key requirem

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