Power System Dynamics Modelling

Transcription

1 Power System Dynamics Modelling Karel Máslo Transmission System Analysis Dpt. ČEPS, a.s. 10 th International Scientific Conference CPS 2012 Control of Power Systems May 16, 2012

2 Contens International Research projects Power system control in island operation P/f control Q/U control Dynamic model verification Local disturbance (double short circuit 23.3.) Global disturbance (Turkey separation 14.1.) Dispatcher training simulator

3 ENTSO-E R&D Plan -European grid towards 2020 challenges to identify the most suitable innovative grid architecture to cope effectively with the 2020 targets, to understand and properly assess the impact and potential benefits of up to date transmission technology, to design and validate novel monitoring and control methodologies of pan- European power system, to develop shared electricity market simulators able to analyze options for market designs and rules.

4 Umbrella project objectives Toolbox for Common Forecasting, Risk assessment, and Operational Optimization in Grid Security Cooperations of Transmission System Operators 1. Develop a dedicated innovative toolbox to support the grid security approach of transmission system operators (TSOs). 2. Demonstrate the enhancement of existing and running procedures by utilisation of the developed toolbox. Therefore extensive tests are planned. The toolbox is embedded in the current information system. 3. Thus provide a scientifically sound basis to support common TSO rules. This project is carried out with the support of the European Union in the 7th Framework Programme.

5 Power system control hiearchical overview P/f Q/U Control area P TieLine f P Sched TC EMS Pilot node Ui TVC OPF EMS SCADA ESTIMACE LFC NS SVC QS Secondary level G ~ P Gov. n P control n Ref G ~ Qi U G AVR Q control U GRef Primary level

6 Active power - frequency control

7 f[hz] 8 Island operation of the ČR with P=3300 MW strategy 1 and EKVIVU G 50HzT tennet PL CZ CZ DE AT PL PL SK H t[s] 20

8 1000 f[mhz] Island operation of the ČR with P=3300 MW strategy 3 and t[min]

9 NT_EPO C6[ MW ] PG _EPOC6[ MW ] NS_EPO C6[ MW ] 200 Strategy NT_EPO C6[ MW ] PG _EPO C6[ MW ] NS_EPO C6[ MW ] t[ min] Strategy t[s]

10 Reactive power - voltage control

11 ~ EOPA+EPOR Small island with P=-530 MW u [pu] 1.3 B E Z DE CIN V452 NE ZN ASO V V453 KRASIKOV ❷ CECHY STRED V400 T Y NE C V401 ~ E C H V V402 PROS ENI C E ❸ t [s] 120

12 Q G_ECHV1[p.j.] Q S_ECHV1[p.j.] Strategy Q G_ECHV1[p.j.] Q S_ECHV1[p.j.] ❷ t[s] -0.3 t[s] 0.3 Q G_ECHV1[p.j.] Q S_ECHV1[p.j.] 1 P SVC t[s] Strategy ❸ QG 0.9

13 Double Line to Ground Fault on Double Circuit Comparing measured and simulated voltages Etzenricht 442 ŘEPORYJE 414 CHODOV PŘEŠTICE Temperature monitoring Fault recording ETE KOČÍN DASNÝ 474

14 Double Line to Ground Fault on Double Circuit Comparing measured and simulated apparent impedances Etzenricht 442 ŘEPORYJE 414 CHODOV PŘEŠTICE Temperature monitoring Fault recording ETE KOČÍN DASNÝ V473 Z L1E* Z L2E* Z L3E*

15 Double Line to Ground Fault on Double Circuit Comparing measured and simulated unit variables Etzenricht 442 ŘEPORYJE 414 CHODOV PŘEŠTICE [pu] P G Temperature monitoring Fault recording ETE KOČÍN T 1 =1.175 s DASNÝ Q G t [s]

16 Double Line to Ground Fault on Double Circuit Comparing measured and simulated line temperatures Etzenricht 442 ŘEPORYJE 414 CHODOV PŘEŠTICE Temperature monitoring Fault recording ETE I 900 [A] T C 16 [ o C] 473 KOČÍN I 15 DASNÝ T C :45 17:52 18:00 18:07 18:14

17 Partial Turkey blackout power system separation Current Swissgrid WAMS Links Source: W. Sattinger: Application of PMU measurements in Europe TSO approach and experience, IEEE PowerTech 2011

18 50.05 Partial Turkey blackout power system separation Comparing WAMS measured and simulated frequencies f [Hz] s f [Hz] Greece France Italy Austria 15 Denmark 20 Portugal 25 t [s] s t 63. [s] Ag Stefanos Bassecourt Brindisi Wien Kassoe Recarei

19 Partial Turkey blackout power system separation Comparing WAMS measured and simulated frequencies f [Hz] :42:30 12:42:35 12:42:40 12:42:45 12:42:50 12:42:55 12:43:00 12:43:05 12:43:10 12:43:15 12:43:20 12:43:25 12:43:30 PMU Prosenice PMU Hradec Východ Simulation HRD

20 Partial Turkey blackout power system separation Comparing WAMS measured and simulated voltages U 420 [kv] :42:30 12:42:35 12:42:40 12:42:45 12:42:50 12:42:55 12:43:00 12:43:05 12:43:10 12:43:15 12:43:20 12:43:25 12:43:30 PMU Hradec Východ Simulation HRD

21 Dispatcher training simulators Design specifications: simulation in real time the whole interconnected European power system for training purposes, training dispatching operators to reproduce and understand large-scale incidents, provision of training on a validated European system model and improve the emergency procedures, available to the DTS to others such as the power plant or distribution network operators, developing and testing common procedures to face emergency scenarios. Source: ENTSO-E R&D Plan -European grid towards 2020 challenges, available online at

22 Dispatcher training simulator Integration of power system model

23 Dispatcher training simulators Components for realistic simulation: synchronous and asynchronous generators and excitation system for synchronous generators, prime movers (steam, hydro, gas and wind turbines, internal combustion engine and so on), energy sources (steam boilers, hydro reservoirs and so on), energy conversion systems like photovoltaic power plants (called Power Park Modules as well), load (lighting and heating, induction motors, static characteristic, secondary U/Q and f/p (called load frequency control as well) controls on-load tap changers for normal transformers and for phase shifting transformers, network protection (distance, overcurrent and so on) and special protection schemes, FACTS and HVDC.

24 Conclusions Dynamic models: are important for power system analysis and simulation, enable testing of different control strategies, provide tools for stability assessment, improving them is continuous process, should be verified permanently (WAMS), make efficient dispatcher training possible. Thank you for your attention! Questions?

25 Power system control P/f Q/U Korekce ACE + f + Saldo měřené + Pbase + Pbase