Notre Dame Tasks. Activity since last Telecon (Feb 7, 2011)

Transcription

1 Notre Dme Tsks tivity sine lst Teleon (Feb, ) Interfe Speifition beteen UWM/Dispth gent Frequeny estimtion simpoer omponent E-bord lod-shedding simpoer omponent Smrt-Sith simpoer omponent Single-phse Odyssin testbed simultions Remining tivities Finlize e-bord lod shedding logi Integrtion of dispth gent into simultions ompletion of single-phse simultion model Odyssin Mirogrid Projet - University of Notre Dme - Mrh,

2 UWM/Dispth gent Interfe v_mes dispth gent i_mes V Vb B V mirosoure P_mes Q_mes V_mes UWM ontroller Vb Ib b Terminl Mesurement b RS- -pin t. kbps mse smpling intervl bit unif. qunt. signed fixed-point P_mes,Q_mes,V_mes, - to pu, - to volts : - to rd/seond Odyssin Mirogrid Projet - University of Notre Dme - Mrh,

3 Frequeny Estimtion omponent v K Gin Produt sin(*pi*u[]) Fn In Out Out Filter Quntized In modulo disrete integrtor Sope onstnt Phse-loked loop ( Hz) IIR elliptil LPF Diret form II ( setions) pssbnd Hz, stopbnd Hz Smpling Freq Hz - bit fixed point quntiztion.... Σ Σ Σ Σ -. z z -.. z -. Odyssin Mirogrid Projet - University of Notre Dme - Mrh,

4 E-bord simpoer omponent E-bord onsists of resistive lod (- W) ith lod shedding logi implemented s n S-funtion Non-ritil lods re shed if folloing onditions re met - lod onneted - frequeny drops belo. Hz (. ritil lods) - RMS urrent exeeds or RMS voltge drops belo V Non-ritil lods re reonneted under folloing onditions - lod disonneted - line frequeny is greter thn. Hz for more thn. seonds reset v i Reset trip V Irms I Vrms trip Irms Vrms Breker Odyssin Mirogrid Projet - University of Notre Dme - Mrh,

5 Smrt Sith simpoer omponent Smrt Sith onnets genertor to the mirogrid under folloing onditions - externl enbling flg = TRUE - Filtered RMS voltge ross sith is less thn V. v u bs s Trnsfer Fn Breker smrt_oupler sith Level M file S Funtion Sope Odyssin Mirogrid Projet - University of Notre Dme - Mrh,

6 Single-Phse Odyssin Testbed (version ) Single-phse Odyssin Testbed uses V / W inverters - Initil simultion testbed onsists of min-grid (V) - single W inverter (V) - step don trnsformer - To e-bords t W (ritil lod) nd W (non-ritil) min grid Vm Step Don Trnsformer R=.. Ω, X =.e- H min grid ble impednes R=. ohm inverter soure X=.e- H W (mx) Im Vm PQ Min Grid V rms RMS (V I) Breker B B Out [reset] lod reset pulses Im PQ ble B B RMS (V I) ble [freq_om] [freq_eb] freq [freq_eb] [reset] reset Breker [freq_eb] Irms Vrms ms_internl_sope [freq_om] ebord kw e bord Vm m Im PQ mirosoure RMS (V I) Step ms_ W ritil lod reonnet smrt oupler Breker B B [reset] reset Breker sith [freq_eb] Irms Vrms ble kw e bord dd ebord Step Soure Side Lod Side Odyssin Mirogrid Projet - University of Notre Dme - Mrh, W non-ritil lod

7 Single-Phse Mirosoure Model (version ) Modifitions to originl -phse UWM model - single ontrolled voltge soure - L Lo pss filter - no trnsformer - Voltge/urrent mesured L filter s output v_mes i_mes UWM_ontroller.e- H i v V Neutrl mirosoure.e- F /(*pi) m Gin Lrge indutors (.e- H) needed to be used in the simultion to prevent simultion breking don. (Is this n issue relted to sle of the soures?) Odyssin Mirogrid Projet - University of Notre Dme - Mrh,

8 Simultion Senrio Time Event min grid onneted, ebords disonneted mirosoure disonneted (set to. pu) lods onnet mirosoure onnets mirosoure setpoint redued to. pu mirogrid islnds ebord sheds lo priority lod mirosoure setpoint inresed to. pu ebord reonnets lo priority lod... lod voltge lod urrent lod rel/retive poer P Q. freq ommnd (Hz) ebord freq (Hz) ebord freq (Hz) lod RMS voltge/urrent W reonets usoure =. pu islnd W shed usoure onnets. usoure =. pu Odyssin Mirogrid Projet - University of Notre Dme - Mrh,