Anze Kopitar had three assists and the Los Angeles Kings continued their recent power-play dominance in a 5-2 road victory over the Ottawa Senators on Tuesday.Viktor Arvidsson scored two goals, Kevin Fiala had a goal and an assist, and Sean Durzi had two assists for the Kings.Arvidsson and Fiala scored as part of a 2-for-3 night for Los Angeles on the power play, extending the Kings’ streak to seven consecutive games with at least one power-play tally. The Kings are an outstanding 11-for-20 with the extra attacker during that seven-game streak.Pheonix Copley stopped 31 of 33 shots to earn the win in his Kings debut. The goaltender was called up from the AHL earlier this week and was playing his first NHL game since signing with Los Angeles during the offseason.Matt Roy and Mikey Anderson scored the Kings’ other goals, both within the first 2:15 of the first period.Ottawa coach D.J. Smith immediately called a timeout to settle his team, and the strategy seemed to be working when Batherson narrowed the Senators’ deficit at the 5:14 mark.However, Los Angeles continued to capitalize on extended time in Ottawa’s end of the ice. Arvidsson was alone at the side of the net to score a power-play marker 8:43 into the frame, and then took advantage of a shaky Senators line change to strike again less than three minutes later.