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电力系统无功平衡计算分析 - 百度文库

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  • 2025/6/15 11:48:33

4.3.3

ݼڱѹT-2T-37.5MvarǰɹΪcos??3030?22.522?0.8ߵ

3030?1522?0.894

ֲʵʲУ飬ԵõʱĹ

cos??0.836ѡƫС÷ڽϴ

4.4㷨

֪ѹ͸ɹʣɸݳķϵͳҪ󷢵ʣӶ޹ȱ㲹¡

4.4.1 ޲Ĺƽ

SLD1?SLD2?30?j22.5MVA?ST2302?22.52??2.0419?j31.7625?0.237?j3.691MVA2110S2?SLD2??ST2??S02?30?j22.5?0.237?j3.691?0.044?j0.32?30.281?j26.511MVAS4?S2

'S3?S4?j?QB22?30.281?j26.511-j1.316?30.281?j25.195MVA

?SL230.2812?25.1952??6.6?j8.36?0.846?j1.072MVA

1102'S3?S3??SL2?j?QB21?30.281?j25.195?0.846?j1.072-j1.316?31.127?j24.951MVAS1\?S2?S3??QB12?30.281?j26.511?31.127?j25.195-j1.36?61.408?j50.102MVA61.4082?50.1022?SL1??4.2?j8.1?2.180?j4.205MVA2 110

S1?S1\??SL1??QB11?61.408?j50.102?2.180?j4.205-j1.36?63.588?j52.947.MVA63.5882?52.9472?ST1??0.5533?j12.2008?0.313?j6.904MVA 2110ϵͳҪ󷢵Ϊ

SG?S1??ST1??S01?63.588?j52.947?0.313?j6.904?0.12?j1.01?64.201?j60.859MVAʱ޹ȱﵽ

60.859?64.021?tan?MVA?21.1823MVA

϶޹ȱij㣬ڱѹT-2T-310MvarǰɹΪcos??3030?12.5223030?22.522?0.8ߵ

?0.923Ƽ·ͱѹĻ٣

С

4.4.2Ĺƽ

''󸺺ɹΪSLD2?SLD3?(30?j12.5)MV?A

ڵĹĴС£

302?12.52S2?S4?30?j12.5??(2.0419?j31.7625)?0.044?j0.321102?30.222?j15.593MV?A\S3?S4??QB4?30.222?j15.593?j1.316?30.222?j14.276MV?A

30.2222?14.2762?SL2??(6.6?j8.36)?0.609?j0.772MV?A 2110\S3?S3??SL2??QB3?30.222?j14.276?0.609?j0.772?j1.316?30.832?j13.732MV?A

S1\?S2?S3??QB2?30.222?j15.593?30.832?j13.732?j1.356?61.054?j27.964MV?A61.0542?27.9642?SL1??(4.2?j8.1)MV?A?1.565?j3.019MV?A 2110S1?S1\??SL1??QB1?61.054?j27.964?1.565?j3.019?j1.356?62.619?j29.623MV?A62.6192?29.6232?ST1??(0.5533?j12.2008)MV?A1102

?0.2194?j4.8387MV?AϵͳҪ󷢵Ϊ

SG?S1??ST1??S01?62.619?j29.623?0.2194?j4.8387?0.12?j1.01 ?62.959?j35.470MV?A ʱĹΪ

cos??62.92962.959?35.47022?0.871

4.4.3

ݼڱѹT-2T-310MvarǰɹΪcos??3030?22.522?0.8ߵ

3030?12.522?0.923

ֲʵʲУ飬ԵõʱĹ

cos??0.871ѡ˵ġ

4.5ȽϺͷ

㷨T-2T-37.5MvarǰɹΪ0.8ߵ0.894ʵʲУ飬õʱĹ0.836

ȷ㷨T-2T-310MvarǰɹΪ0.8ߵ0.923ʵʲУ飬õʱĹ0.871

ԿУַշЩ࣬

ƲпԴӲҾеĽǶѡʺϵIJ籾ѡ㷨õ10MvarɴﵽҪʵ޹ʵƽ⡣޹ʲԸı޹ֲɼейĺ͵ѹģʵֵϵͳľС

ϵƽ½޹ƽģı䲹ʽзƽصIJһʱ֪ͨϵͳĹϻά0.85ң̫IJɴ˿ԵõڶϵͳҪǺܸʱС޹޹Ҫʱ٣ʹƴﵽõЧ

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4.3.3 ݼڱѹT-2T-37.5MvarǰɹΪcos??3030?22.522?0.8ߵ3030?1522?0.894ֲʵʲУ飬ԵõʱĹcos??0.836ѡƫС÷ڽϴ 4.4㷨 ֪ѹ͸ɹʣɸݳķϵͳҪ󷢵ʣӶ޹ȱ㲹¡ 4.4.1 ޲Ĺƽ SLD1?SLD2?30?j22.5MVA?ST2302?22.52??2.0419?j31.7625?0.237?j3.6

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