Photovoltaic grid-connected inverter control method for preventing voltage out-of-limit of low-voltage distribution network
A low-voltage distribution network and voltage over-limit technology, applied in photovoltaic power generation, electrical components, circuit devices, etc., can solve the problems of not considering the impact of photovoltaic access, increasing grid loss, grid loss, etc.
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[0060] The photovoltaic grid-connected inverter control method to prevent the voltage from exceeding the limit of the low-voltage distribution network is realized by the following steps:
[0061] 1) Collect the three-phase voltage U of the grid-connected point a , U b , U c and grid-connected point three-phase current I a , I b , I c ;
[0062] 2) Collect the three-phase voltage U on the grid side sa , U sb , U sc and grid-side three-phase current I sa , I sb , I sc ;
[0063] 3) Collect the three-phase voltage U on the load side la , U lb , U lc and load side three-phase current I la , I lb , I lc ;
[0064] 4) The three-phase voltage U of the grid-connected point a , U b , U c Input the abc / dq0 module of matlab to get the grid-connected point voltage d, q-axis component U d , U q ;
[0065] 10) The three-phase current I of the grid-connected point a , I b , I c Input the abc / dq0 module of matlab to get the grid-connected point current d and q-axis ...
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