Use case for the south Portuguese network - Results -

Transcription

1 Use case for the south Portuguese network - Results - Nélio Machado, REN, Portugal Milenko Halat, AIA, Spain Network Security Assessment Days November 5 th 2015, Brussels

2 Content Description of Portuguese Network Steps for Automatic conversion Preliminary results 2

3 Overview of Portuguese HV network HV lines 8733km 400 kv 2434 km 220 kv 3565 km 150 kv 2734 km Interconections 9 (6 x 400, 3 x 220 kv) Telecontrol (400, 220,150 e 60 kv): Substations 80

4 Overview of Portuguese HV network Interconnections coal gas hidro Windfarms Consumption density

5 2014 Consumption

6 Overview of Portuguese HV network

7 Generation

8

9 2015 4,931MW wind instaled capacity 8,322MW peak load Managing Wind Generation Consumption lower than renewable not dispatchable generation Solution: - Use pump units (1,633MW) - Export (if possible)

10 2015 4,931MW wind instaled capacity 8,322MW peak load Managing Wind Generation Drop of 2500MW of wind generation in less than 8 hours Wind and consumption are in phase opposition Wind forecast generation is very important

11 itesla Portuguese Usecase In order to evaluate itesla toolbox security analysis capabilities, an incident occurred in 23/12/2009 was selected as case study of voltage collapse at South zone of Portugal. This situation was created by local extreme wind conditions in a event that is techically called Explosive cyclogenesis also referred as a weather bomb. It is an intense low pressure system with a central pressure that falls 24 millibars in a 24-hour period.

12 itesla Portuguese Usecase 23/dec/ :38 First hit On a area of 50 km, wind speed of 220km/h was registered 13 towers were hit and collapse 3 lines got out of operation: (1) 400 and (2) 150kV

13 itesla Portuguese Usecase 23/dec/ :34 Second hit Local windfarm registered wind speed of 201km/h 14 towers were hit and collapse 4 lines got out of operation: (1) 400 and (3) 220kV

14 Situation in 23/12/2009 2nd hit Rio Maior Batalha Zêzere Carregado South Portugal (Setúbal, Alentejo and Algarve) Spain) coal gas hidro Fuel emergency turbines

15 itesla Portuguese Usecase This situation was managed by REN operation control room during 3 months using steady state contingencies results to decide if fuel emergency turbines were needed Generation Load forecast itesla approach - Steady state and dynamic calculation - Uncertainties were considered validating all operation space Generation Load forecast

16 Objective/Challenge: itesla Portuguese Usecase Generate 1 month snapshots before incident and 1 week after CIM14 format will be used which consider static references (RDFIDs) in all cases Difficulties: REN snapshots are in PSS/E format Equipment at snapshots don t have static references Our CIM converter tool vendor is discontinuing CIM14 as TSOs will use CGMES in the future

17 itesla Portuguese Usecase REN generated 21.6GB of information 1728 datasets in CIM14 Metering Database (Generation and load) Base RAW File 16/12/2009 CIM converter ODMS v11 CIM14 UseCases Outage Database SCADA Database Voltage Profile RDFID mapping file TestCase 16/12/2009

18 Conversion Modules The itesla platform has been designed to support ( plug ) different dynamic simulation engines One of them is Dymola, for Modelica By developing automatic conversion modules (from proprietary formats to Modelica) we aim to ease the adoption of itesla platform This step has a series of advantages by itself So far, we have developed conversion modules from Eurostag and PSSE tools, but extensible to any proprietary simulation tool 18

19 How does it work? (1/3) PSSE dynamic file (.dyr) The connections depend on each configuration model CRESTUMA parameter Real SNREF = 100.0; // BUSES // TAP CHANGER TRANSFORMERS // LINES // LOADS // CAPACITORS // GENERATORS PowerSystems.Electrical.Machines.PSSE.GENSAL.GENSAL G1( eterm = 1.0, anglev0 = , pelec = 533.0, qelec = , Mbase = , Tpd0 = 5.0, Tppd0 = 0.06, Tppq0 = 0.1, H = 3.2, D = 0.0, Xd = 0.75, Xq = 0.5, Xpd = 0.25, Xppd = , Xppq = , Xl = , s10 = , s12 = // REGULATORS // EVENT:FAULT PowerSystems.Electrical.Events.PwFault _fault(x = 0.5, R = 0.5, t1 = 20, t2 = 100); equation // Connecting REGULATORS and MACHINES connect(scrx.efd.pelec, gensal.efd); connect(hygov.pmech, gensal.pmech); // Connecting REGULATORS and REGULATORS connect(stab2a.vothsg, ieeet2.vothsg); // Connecting REGULATORS and CONSTANTS connect(ieeet2.voel, const.y); // Connecting LINES connect(_bus.p, pwline_2.p); Modelica file 19

20 How does it work? (2/3) Modelica Library (ipsl) model CRESTUMA parameter Real SNREF = 100.0; // BUSES // TAP CHANGER TRANSFORMERS // LINES // LOADS // CAPACITORS // GENERATORS PowerSystems.Electrical.Machines.PSSE.GENSAL.GENSAL G1( eterm = 1.0, anglev0 = , pelec = 533.0, qelec = , Mbase = , Tpd0 = 5.0, Tppd0 = 0.06, Tppq0 = 0.1, H = 3.2, D = 0.0, Xd = 0.75, Xq = 0.5, Xpd = 0.25, Xppd = , Xppq = , Xl = , s10 = , s12 = // REGULATORS // EVENT:FAULT PowerSystems.Electrical.Events.PwFault _fault(x = 0.5, R = 0.5, t1 = 20, t2 = 100); equation // Connecting REGULATORS and MACHINES connect(stab2a.pelec, genrou.pelec); // Connecting REGULATORS and REGULATORS connect(stab2a.vothsg, ieeet2.vothsg); // Connecting REGULATORS and CONSTANTS connect(ieeet2.voel, const.y); // Connecting LINES connect(_bus.p, pwline_2.p); // COUPLING DEVICES 20

21 How does it work? (3/3) Modelica generatorregulation connections model CRESTUMA parameter Real SNREF = 100.0; // BUSES // TAP CHANGER TRANSFORMERS // LINES // LOADS // CAPACITORS // GENERATORS PowerSystems.Electrical.Machines.PSSE.GENSAL.GENSAL G1( eterm = 1.0, anglev0 = , pelec = 533.0, qelec = , Mbase = , Tpd0 = 5.0, Tppd0 = 0.06, Tppq0 = 0.1, H = 3.2, D = 0.0, Xd = 0.75, Xq = 0.5, Xpd = 0.25, Xppd = , Xppq = , Xl = , s10 = , s12 = // REGULATORS // EVENT:FAULT PowerSystems.Electrical.Events.PwFault _fault(x = 0.5, R = 0.5, t1 = 20, t2 = 100); equation // Connecting REGULATORS and MACHINES connect(scrx.efd.pelec, gensal.efd); connect(hygov.pmech, gensal.pmech); // Connecting REGULATORS and REGULATORS connect(stab2a.vothsg, ieeet2.vothsg); // Connecting REGULATORS and CONSTANTS connect(ieeet2.voel, const.y); // Connecting LINES connect(_bus.p, pwline_2.p); 21

22 Converting a power grid (1/2) STEPS Preliminary checks: Are all the required models in the Library? Model and validate what you need Is the system consistent in the native tool? (Power Flow, Dynamic Simulation) Are the CIM files correctly generated? (No info missing, correct version) Automatic conversion: Try Regulation groups is simple examples Try first small representative systems Time step for simulation or is the correct integrator? Follow the recommendations. Wrong integrator may introduce artificial behavior. Solver chosen 22

23 Converting a power grid (1/2) STEPS Library release as Open Source Community Publishing analysis and recommendations Preliminary checks: Are all the required models in the Library? Model and validate what you need Is the system consistent in the native tool? (Power Flow, Dynamic Simulation) Are the CIM files correctly generated? (No info missing, correct version) Automatic conversion: Try Regulation groups is simple examples Try first small representative systems Time step for simulation or is the correct integrator? Follow the recommendations. Wrong integrator may introduce artificial behavior. Solver chosen 23

24 Converting a power grid (2/2) Modelica file has been generated: Does the system check? Connection problems, different number of equations and variables. Does the Modelica file initialize? Different kind of problems [check the models, parameters ] Is there an stable solution? Check initial values on elements Is the steady state value similar to the native tool? LF: Do the values correspond? Is the same swing? Introduce events: Software to software validation What are the acceptability criteria? [Remember some models comes from an interpretation of the black-box models] Increase complexity: Until arrive to the target system. Observe computation times: recommendations about simulation engine, integration methods, etc 24

25 Converting a power grid (2/2) Library release as Open Source Community Publishing analysis and recommendations Modelica file has been generated: Does the system check? Connection problems, different number of equations and variables. Does the Modelica file initialize? Different kind of problems [check the models, parameters ] Is there an stable solution? Check initial values on elements Is the steady state value similar to the native tool? LF: Do the values correspond? Is the same swing? Introduce events: Software to software validation What are the acceptability criteria? [Remember some models comes from an interpretation of the black-box models] Increase complexity: Until arrive to the target system. Observe computation times: recommendations about simulation engine, integration methods, etc 25

26 Portuguese network Description 656 connected buses. 171 Gens of which 146 are connected + 86 WT4G1 14 different regulation configurations

27 Regulation Groups Reg Group Infinite Bus Example Created to check the connection

28 Results Conversion of whole Portuguese network is on progress Trimmed portions have been simulated: RIBATEJO South part: [Currently fixing problems in some models that are present there] 28

29 RIBATEJO Fault in Bus at t = 5[s] 29

30 South Part 27 gens / 80 buses (Below Lisbon) [Fixing] Some ESST1A models in the.dyr file have KLR = 0 and it should be declared not equal to zero. 30

31 Summary The automatic conversion needs some tuning, but the effort will decrease progressively This work totally worth it: not only to benefit from itesla platform, but to perform analysis. For instance, using custom regulations or events 31

32 Thanks! 32

33 Conversion tool: Status Overview Automatic conversion from Eurostag or PSSE to Modelica Merge dynamic and static parts Simulations ~ 70 generators so far Events automatically included Two initialization schemes Uses the Modelica Library Modelica Power Systems Library Quite complete, ordered and validated Compatible with OpenModelica Prepared to collaborative working and maintenance Systems Set of systems (~18) of different size and complexity

34 System conversion to Modelica Dynamic Static PSS/E Modelic a Library Conversion module In itesla Platform Modelica Representation

35 Modelica Library Component type Component Modelica model Checked GENERATORS EXCITERS GOVERNORS STABILIZERS WIND GENERATORS GENSAL GENROU ESST4B ESAC1A ESAC2A ESST1A ESDC1A ESDC2A EXST1 IEEET1 IEEET2 ST5B SCRX SEXS GAST GGOV1 x IEESGO IEEEG1 HYGOV TGOV1 IEEEST PSS2A PSS2B STAB2A WT3G1 * WT4G1 * All devices for Norwegian, Portuguese and Greek networks have been modelled. The models recently integrated in the library will be tested in the conversion of Greek and Portuguese network.

36 Modelica Library

37 Summary table Status: Converted Systems

38 Inclusion of events We have modelled 6 types of events so far o Line opening, o bus / line fault, o bank / load / setpoint modification The event is included a posteriori, as a modification of the converted system Event id Event type Elemen t Event parameters