simsen - Laboratoire de Machines Electriques (LME)

this machine are tuned by the regulators RU1 and RN1.The stator of this machine is connected to a HVDCtransmission constituted by 4 current convertersCONV1 - CONV4 and 4 transformers T1 - T4 with phaseshifting Yy0 and Yd11. Both AC sides of thetransmission are equipped with filters C1- C4 for theelimination of the 12 th and the 24 th harmonics. Thecapacitor effect of the DC line is taken into account h bythe condenser CCC1. The DC transmission line is tunedT1T2RG1 RL2L1u-+g consC1C2T5u consg+CONV1RRi1-CONV2-+C5u DCRP1CCC1i DC- p cons-++RC6RCONV4RQ1CONV3RRi2C7C3C4T3T4T6VAR1uME1MS1GS3~RRN1n-+Rby 2 current regulators Ri1 and Ri2, a power regulatorRP1 and an extinguishing angle regulator RG1 for theinverters CONV1 and CONV2. At the inverters side, thevoltage is tuned by a reactive power static converter. Itis constituted by 2 transformers T5 - T6, 3 filters C5 - C7for the elimination of the 5 th , 7 th , 11 th and 13 thu cons+-RU1n consharmonics and the production of reactivepower, a current variator VAR1 and areactive power regulator RQ1. All thesystem is connected to the AC network S1through the line L1. This example is anacademical one in order to show the abilityof SIMSEN to simulate complex networks.The aim of the study is to analyse thedynamic behaviour of the system after asudden change of the power set valuep cons of the power regulator RP1. In thissimulation, the extinguishing angle setvalue of the regulator RG1 keep aconstant value of 30°. Figures 4 to 11show the results of the simulation. Allthese results are referred to the ratingvalues of the synchronous machine MS1.Therefore SIMSEN is a suitable tool forthe determination of optimal regulatorsand filters parameters relative to a complexstructure as presented in figure 3.S1Fig.3 Power network studied in example 1 : HVDC transmissionwith reactive power static converter (SVC)Fig. 4 Power set value "pcons" of the power regulatorRP1 and power "pg" of the HVDC transmissionFig.5 Voltage "uDC" and current "iDC" in the DC linkof the HDVC transmission-3-