A STATCOM station comprising: a STATCOM arrangement comprising: a Modular Multilevel Chain-Link Converter, MMC, and a transformer arrangement arranged to be an interface between the MMC and an AC grid ; wherein the MMC is connected in a wye topology with a plurality of converter arms , one for each phase of the AC grid, each arm comprising a plurality of chain-linked converter cells ; wherein the transformer arrangement is arranged to interface each of the arms of the MMC with a respective phase of the grid , and arranged to for each of the converter arms produce leakage reactance resulting in reactance in series with the arm which obviates the need for a phase reactor connected in series with said arm; wherein there is no phase reactor connected in series with any of the converter arms ; wherein the STATCOM station further comprises: a valve hall enclosing the MMC ; a transformer tank enclosing the transformer arrangement ; and a bushing for a conductor electrically connecting the MMC with the transformer arrangement , said same bushing passing through both a wall of the valve hall and a wall of the transformer tank . a STATCOM arrangement comprising: a Modular Multilevel Chain-Link Converter, MMC, and a transformer arrangement arranged to be an interface between the MMC and an AC grid ; wherein the MMC is connected in a wye topology with a plurality of converter arms , one for each phase of the AC grid, each arm comprising a plurality of chain-linked converter cells ; wherein the transformer arrangement is arranged to interface each of the arms of the MMC with a respective phase of the grid , and arranged to for each of the converter arms produce leakage reactance resulting in reactance in series with the arm which obviates the need for a phase reactor connected in series with said arm; wherein there is no phase reactor connected in series with any of the converter arms ; a Modular Multilevel Chain-Link Converter, MMC, and a transformer arrangement arranged to be an interface between the MMC and an AC grid ; wherein the MMC is connected in a wye topology with a plurality of converter arms , one for each phase of the AC grid, each arm comprising a plurality of chain-linked converter cells ; wherein the transformer arrangement is arranged to interface each of the arms of the MMC with a respective phase of the grid , and arranged to for each of the converter arms produce leakage reactance resulting in reactance in series with the arm which obviates the need for a phase reactor connected in series with said arm; wherein there is no phase reactor connected in series with any of the converter arms ; wherein the STATCOM station further comprises: a valve hall enclosing the MMC ; a transformer tank enclosing the transformer arrangement ; and a bushing for a conductor electrically connecting the MMC with the transformer arrangement , said same bushing passing through both a wall of the valve hall and a wall of the transformer tank . a valve hall enclosing the MMC ; a transformer tank enclosing the transformer arrangement ; and a bushing for a conductor electrically connecting the MMC with the transformer arrangement , said same bushing passing through both a wall of the valve hall and a wall of the transformer tank . <EOS>