Modeling of Multifunctional Substation Devices

Transcription

1 Modeling of Multifunctional Substation Devices Dr. Alexander Apostolov Los Angeles, CA

2 Page: 2 Introduction IEC is now an approved international standard It allows the development of a new generation of distributed applications The successful implementation requires: Good understanding of the principles of the standard (No Ignorance!) Teamwork Ambition

3 Page: 3 Objects An object is.. a thing that can be seen and touched; material thing that occupies space... Webster New World Dictionary of the American Language In object-oriented design (OOD) an object is an abstraction of real world entities and functions in a problem domain. Problem Domain is the application or process that is being modeled by Object Oriented representation (Classes and Objects) power system protection and control. Objects are encapsulated that is, they contain both their code and their data, making them more easier to maintain

4 Page: 4 Classes and Objects A class is a template for the creation of objects, the description of one or more objects with the same definitions for information and behavior. An object is defined as an instance of a class Objects represent information and behavior : properties (or components, attributes) Data that describe an object services (or methods, and events) Methods are things you can tell the object to do Events are things the object does

5 Page: 5 Class Example

6 Page: 6 Class Example

7 Page: 7 Class Instance Example

8 Page: 8 Classes and Objects

9 Page: 9 Substation Communications Architecture Substation HMI Substation Computer SCADA Master Switch Router Switch WAN IED IED IED IED IED IED IED

10 Page: 10 System Communications Architecture Traders Analysts EMS EMS SCADA Server ISD Substation 1 Substation Gateway Switch WAN Substation j Substation i IED IED Substation 2 IED IED

11 Page: 11 Function Definitions Functions in the substation are performed by the protection, control, monitoring and recording system. A function can be divided into sub-functions and functional elements. The functional elements are the smallest parts of a function that can exchange data. These functional elements in IEC are called Logical Nodes

12 Page: 12 Logical Node Groups System Logical Nodes LN Group: L Logical Nodes for protection functions LN Group: P Logical Nodes for protection related functions LN Group: R Logical Nodes for control LN Group: C Logical nodes for generic references LN Group: G Logical Nodes for interfacing and archiving LN Group: I Logical Nodes for automatic control LN Group: A

13 Page: 13 Logical Node Groups Logical Nodes for metering and measurement LN Group: M Logical Nodes for sensors and monitoring LN Group: S Logical Nodes for switchgear LN Group: X Logical Nodes for instrument transformers LN Group: T Logical Nodes for power transformers LN Group: Y Logical Nodes for further power system equipment LN Group: Z

14 Page: 14 Object Models Relay Object Models

15 Page: 15 Device Functional Hierarchy IED Functional Hierarchy Protection IED Device Identity Function Control Sub-Function Control Overcurrent Ground Definite time #1 Pickup Value Minimum Maximum Step Phase Inverse time Time delay Function Function Negat. Seq. Instant. Directionality

16 Page: 16 IEC Server Class IED Functional Hierarchy

17 Page: 17 IEC Server Class IED Functional Hierarchy

18 Page: 18 IEC Logical Device Class IED Functional Hierarchy

19 Page: 19 IEC Logical Node Class IED Functional Hierarchy

20 Page: 20 IEC Data Class

21 Page: 21 Logical Nodes Information Categories

22 Page: 22 Functional Constraints The property of DataAttribute that shows its use is a Functional Constraint (FC). Some more commonly used are: CO control SP set point CF configuration DC description SG setting group MX measurements

23 Page: 23 Object Hierarchy Server Logical Device Logical Device Logical Device Logical Node Logical Node Logical Node Data Data Data Data Attribute Data Attribute Data Attribute

24 Page: 24 Nested DataAttributes DATA Instance DataAttr DataAttr DAComp DAComp DAComp DAComp

25 Page: 25 Nested DataAttributes

26 Page: 26 Data path example MMXU1.A.phsB.cVal.mag.f MMXU1: instance of LN class MMXU defined in Part 7-4 A: instantiation of the Composite DATA class WYE (defined in 7-3) phsb: value of the current in phase B as a Simple Common DATA class of type CMV (defined in 7-3 ) cval: is the complex value of the current in phase B (of the Common DataAttribute type Vector) mag: this object represents the magnitude of the complex value (type AnalogValue - defined in 7-3) f is a DataAttributeComponent which is of the basic type FLOATING POINT (defined in 7-2)

27 Page: 27 Common data classes for measurand information Measured value (MV) Complex measured value (CMV) Sampled value (SAV) WYE Delta (DEL) Sequence (SEQ) Harmonic value (HMV) Harmonic value for WYE (HWYE) Harmonic value for Delta (HDEL)

28 Page: 28 Metering and Measurement Logical Nodes Differential measurements Name: MDIF Harmonics or interharmonics Name: MHAI Non phase related harmonics or interharmonics Name: MHAN Metering Name: MMTR Non phase related Measurement Name: MMXN Measurement Name: MMXU Sequence & imbalance Name: MSQI Metering Statistics Name: MSTA

29 Page: 29 Measured values attributes in MMXU Name Type Description PPV DEL Phase to phase voltages PhV WYEPhase to ground voltages A WYEPhase currents W WYEPhase active power (P) VAr WYEPhase reactive power (Q) VA WYEPhase apparent power (S) TotW MV Total Active Power (Total P) TotVAr MV Total Reactive Power (Total Q ) TotVA MV Total Apparent Power (Total S) TotPF MV Average Power factor (Total PF) Hz MV Frequency PF WYE Phase power factor Z WYEPhase Impedance

30 Page: 30 Protection Logical Nodes

31 Page: 31 Protection Logical Nodes

32 Page: 32 Logical Nodes Data

33 Page: 33 Setting Data

34 Page: 34 Overcurrent Protection LN PTOC

35 Page: 35 Setting Attributes

36 Page: 36 Services

37 Page: 37 Distributed Applications F3 PD1 PD2 LD1 LN1 LD1 LN1 F1 LN2 LN3 LN4 F2 LN2 LN3 LN4 LNn LNn

38 Page: 38 Measuring Functions Decomposition Substation Level IARC IHMI Bay Level MMTR MMXU Process Level TVTR TCTR

39 Page: 39 Multifunctional IED Object Model Server LN1 LD1 LN2 LN3 LN4 LNn

40 Page: 40 Multifunctional IED Object Model HV PQM IED LD1 LN(i) hv MMXU1 MMTR1 MMHI1 MSTA1 mv MMXU2 MMHI2 MV MSTA2

41 Page: 41 Multifunctional IED Object Model Server LD1 LD2 LD3 LD4 LD5 LD6

42 Page: 42 Distance Function Line Impedance Setting Criteria Distance VT Supervision Fault Detection Faulted Phase Selection Directional Detection Distance Charact. Compensation Power Swing Detection Polarized ΔV, ΔI dz/dt ΔI/dt I> V< Z< ΔV ΔI V V0 V2 I0 K0 I0 mut CCVT I ch I load SIR

43 Page: 43 Distance Function Distance Zone Characteristic Complex Load Encroachment Simple Ohm R bl r bl LX bl Lx bl Ohm Ohm Mho Direction R bl X bl r bl x bl Mho

44 Page: 44 Load Encroachment Load Encroachment R bl r bl LX bl Lx bl Ohm

45 Page: 45 Distance Zone Settings Configuration Model

46 Page: 46 Distance Zone Settings Characteristic Model

47 Page: 47 Distance Zone Settings Characteristic Model

48 Page: 48 Mho Characteristic Model X PoRchMod PoRchAng OfsMod Polar Reach Module Polar Reach Angle Reverse Offset Module ReaRchAng OfsAng Reverse Offset Angle ReaRchMod PoRchMod RisRchMod RisRchAng Resistive Reach Module Resistive Reach Angle PoRchAng RisRchAng ReaRchMod Reactive Reach Module OfsMod RisRchMod R ReaRchAng Reactive Reach Angle OfsAng PlrMth Polarizing Method PlrVal Polarizing Value

49 Page: 49 Quadrilateral Characteristic Model X PRisRch Positive Resistive Reach Z PRisAng1 Positive Resistive Angle 1 PRisAng2 Positive Resistive Angle 2 PReaRch Positive Reactance Reach PReaAng1 Positive Reactance Angle 1 PReaAng2 Positive Reactance Angle 2 NRisRch Negative Resistive Reach PCharAng PRisAng1 PRisAng2 Negative Resistive Angle 1 Negative Resistive Angle 2 r NCharAng R NReaRch NReaAng1 NReaAng2 Negative Reactance Reach Negative Reactance Angle 1 Negative Reactance Angle 2 z x PCharAng NCharAng Positive Characteristic Angle Negative Characteristic Angle